CN115307370A - Air cooler defrosting control method and device based on Yun Bian coordination - Google Patents
Air cooler defrosting control method and device based on Yun Bian coordination Download PDFInfo
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- CN115307370A CN115307370A CN202210718226.XA CN202210718226A CN115307370A CN 115307370 A CN115307370 A CN 115307370A CN 202210718226 A CN202210718226 A CN 202210718226A CN 115307370 A CN115307370 A CN 115307370A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
- F25D21/008—Defroster control by timer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
- F25D21/004—Control mechanisms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/02—Timing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/04—Controlling heat transfer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
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- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The disclosure relates to the technical field of refrigeration equipment, and provides an air cooler defrosting control method and device based on cloud-edge coordination. The method comprises the following steps: calculating heat transfer coefficients corresponding to the air coolers of the target refrigeration storage in each operation time period in a preset operation cycle; determining the frosting degree corresponding to each operation time period according to the heat transfer coefficient; determining a defrosting control strategy according to the frosting degree; the defrosting control strategy is issued to the control terminal, so that the control terminal controls the air cooling machine to execute defrosting operation according to the defrosting control strategy and feeds back the execution result of the defrosting operation; and sending the execution result to the cloud platform so that the cloud platform verifies the execution result, and issuing an instruction for finishing the defrosting operation to the control terminal when the verification is passed. The method can flexibly and accurately judge the frosting degree of the heat exchanger of the refrigeration equipment, and reduce the temperature fluctuation and unnecessary energy consumption brought by unnecessary halt defrosting while avoiding the 'faulty' operation of the refrigeration equipment.
Description
Technical Field
The disclosure relates to the technical field of refrigeration equipment, in particular to an air cooler defrosting control method and device based on cloud-side coordination.
Background
In the operation process of the refrigeration house, the frequent entrance and exit of personnel and goods causes the frequent opening of the door of the refrigeration house, thereby enhancing the air flow inside and outside the storage house and leading the outdoor high-temperature high-humidity air into the storage house. Goods (such as fruits and vegetables) directly entering the storage without pre-cooling treatment can generate dry loss in the processes of temperature reduction and storage, so that the temperature and the moisture content of the air in the storage fluctuate. As the temperature of air is gradually reduced when the air circulates in the warehouse, water vapor carried by the air is gradually separated out, the separated water vapor can be condensed into frost on the surfaces of blades or finned tubes of refrigeration equipment (such as an air cooler), the heat exchange resistance of the refrigeration equipment is increased, and the heat exchange capacity is reduced. This also means that the refrigeration equipment needs to run longer and consume more energy (e.g. electricity) in order to reach or maintain the same temperature.
In order to prevent or reduce frosting of the refrigeration equipment and increase the energy consumption of the equipment, the most common solution at present is to defrost regularly. However, although the timing defrosting can solve the frosting problem of the refrigeration equipment to a certain extent, the timing defrosting mechanism can cause the defrosting operation to be started under the condition that defrosting is not needed, so that unnecessary energy consumption is increased indirectly.
Therefore, the existing timing defrosting mechanism cannot flexibly and accurately judge the frosting degree of the heat exchanger of the refrigeration equipment, and cannot reduce the temperature fluctuation and unnecessary energy consumption caused by unnecessary halt defrosting while avoiding the 'sick' (frosting) operation of the refrigeration equipment.
Disclosure of Invention
In view of this, the embodiment of the present disclosure provides an air cooler defrosting control method and apparatus based on Yun Bian coordination, so as to solve the problems that the existing timing defrosting mechanism cannot flexibly and accurately determine the frosting degree of a heat exchanger of a refrigeration device, and cannot reduce temperature fluctuation and unnecessary energy consumption caused by unnecessary shutdown defrosting while avoiding "faulty" (i.e., frosting) operation of the refrigeration device.
In a first aspect of the embodiments of the present disclosure, a method for controlling defrosting of an air cooler based on cloud-side coordination is provided, including:
calculating heat transfer coefficients corresponding to all operation time periods of an air cooler of a target refrigeration house in a preset operation cycle;
determining the corresponding frosting degree of each operation time period according to the corresponding relation between the preset heat transfer coefficient and the frosting degree;
determining a defrosting control strategy according to the frosting degree, wherein the defrosting control strategy comprises a defrosting execution time interval and a defrosting control parameter corresponding to the defrosting execution time interval;
the defrosting control strategy is issued to a control terminal of the target refrigeration house, so that the control terminal controls a cooling fan to execute defrosting operation according to the defrosting control strategy and feeds back an execution result of the defrosting operation;
and sending the execution result to the cloud platform so that the cloud platform verifies the execution result, and issuing an instruction for finishing the defrosting operation to the control terminal when the verification is passed.
In a second aspect of the embodiments of the present disclosure, an air cooler defrosting control device based on cloud-edge coordination is provided, including:
the calculating module is configured to calculate heat transfer coefficients corresponding to the air cooler of the target refrigeration house in each operation time period in a preset operation cycle;
the frosting determination module is configured to determine the frosting degree corresponding to each operation time period according to the corresponding relation between the preset heat transfer coefficient and the frosting degree;
the strategy determining module is configured to determine a defrosting control strategy according to the frosting degree, wherein the defrosting control strategy comprises a defrosting execution time interval and a defrosting control parameter corresponding to the defrosting execution time interval;
the issuing module is configured to issue the defrosting control strategy to a control terminal of the target refrigeration house, so that the control terminal controls the air cooling machine to execute the defrosting operation according to the defrosting control strategy and feeds back the execution result of the defrosting operation;
the sending module is configured to send the execution result to the cloud platform so that the cloud platform verifies the execution result, and when the verification passes, an instruction for ending the defrosting operation is issued to the control terminal.
In a third aspect of the embodiments of the present disclosure, an electronic device is provided, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the above method when executing the computer program.
In a fourth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided, which stores a computer program, which when executed by a processor, implements the steps of the above-mentioned method.
Compared with the prior art, the beneficial effects of the embodiment of the disclosure at least comprise: the embodiment can be applied to the edge server, and the heat transfer coefficients corresponding to the air cooler of the target refrigeration house in each operation time period in the preset operation cycle are calculated; determining the frosting degree corresponding to each operation time period according to the corresponding relation between the preset heat transfer coefficient and the frosting degree; determining a defrosting control strategy according to the frosting degree, wherein the defrosting control strategy comprises a defrosting execution time interval and a defrosting control parameter corresponding to the defrosting execution time interval; the defrosting control strategy is issued to a control terminal of the target refrigeration house, so that the control terminal controls a cooling fan to execute defrosting operation according to the defrosting control strategy and feeds back an execution result of the defrosting operation; the execution result is sent to the cloud-end platform, so that the cloud-end platform verifies the execution result, when the verification is passed, an instruction for finishing the defrosting operation is issued to the control terminal, the frosting degree of the air cooler can be accurately judged according to the heat transfer coefficient of the air cooler in each operation period, and a corresponding defrosting control strategy can be further formulated according to the frosting degree, so that the control terminal can control the air cooler to execute the defrosting operation as required according to the defrosting control strategy, so that the air cooler can recover a healthy (frost-free) operation state, and meanwhile, the temperature fluctuation and unnecessary energy consumption caused by unnecessary shutdown defrosting are reduced.
Drawings
To more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without inventive efforts.
FIG. 1 is a scenario diagram of an application scenario of an embodiment of the present disclosure;
fig. 2 is a schematic timing sequence flow diagram of an air cooler defrosting control method based on Yun Bian coordination provided by an embodiment of the present disclosure;
fig. 3 is a structural schematic diagram of an air cooler in an air cooler defrosting control method based on Yun Bian coordination provided by the embodiment of the disclosure;
FIG. 4 is a schematic structural diagram of an air cooler defrosting control device based on Yun Bian coordination provided by an embodiment of the disclosure;
fig. 5 is a schematic structural diagram of an electronic device provided in an embodiment of the present disclosure.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the disclosed embodiments. However, it will be apparent to one skilled in the art that the present disclosure may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present disclosure with unnecessary detail.
An air cooler defrosting control method and device based on Yun Bian coordination according to the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a scene schematic diagram of an application scenario according to an embodiment of the present disclosure. The application scenario may include an edge server 101, a control terminal 102 communicatively connected to the edge server 101 via a network 104, and a cloud platform 103 communicatively connected to the edge server 101 via the network 104.
The edge server 101 may be an edge server disposed near the control terminal 102 of the target refrigerator (for example, in the same region or campus as the control terminal 102). Illustratively, the edge server may be a device of model SE350, XE2420, or the like.
The control terminal 102 may be hardware or software. When the control terminal 102 is hardware, it may be various electronic devices having a display screen and supporting communication with the edge server 101, including but not limited to smart phones, tablet computers, laptop portable computers, desktop computers, and the like; when the control terminal 102 is software, it may be installed in the electronic device as above. The control terminal 102 may be implemented as a plurality of software or software modules, or may be implemented as a single software or software module, which is not limited by the embodiments of the present disclosure. Further, various applications may be installed on the control terminal 102, such as data processing applications, instant messaging tools, social platform software, search-type applications, shopping-type applications, and so on.
The cloud platform 103 is a software platform integrating multiple functions of software searching, downloading, using, managing, backing up and the like based on an application virtualization technology.
The network 104 may be a wired network connected by a coaxial cable, a twisted pair cable and an optical fiber, or may be a wireless network that can interconnect various Communication devices without wiring, for example, bluetooth (Bluetooth), near Field Communication (NFC), infrared (Infrared), and the like, which is not limited in the embodiment of the present disclosure.
In the operation process of the refrigeration house, the edge server 101 can calculate the heat transfer coefficient corresponding to each operation time interval of the air cooler of the target refrigeration house in a preset operation cycle; determining the corresponding frosting degree of each operation time period according to the corresponding relation between the preset heat transfer coefficient and the frosting degree; then, determining a defrosting control strategy according to the frosting degree, wherein the defrosting control strategy comprises a defrosting execution time interval and a defrosting control parameter corresponding to the defrosting execution time interval; then, the defrosting control strategy is issued to the control terminal 102 of the target refrigeration house, and the control terminal 102 can control the air cooling machine to execute the defrosting operation according to the defrosting control strategy and feed back the execution result of the defrosting operation to the edge server 101; when receiving the execution result, the edge server 101 sends the execution result to the cloud platform 103, the cloud platform 103 verifies the execution result, and when the verification passes, sends an instruction for finishing the defrosting operation to the control terminal 102, and when receiving the instruction for finishing the defrosting operation, the control terminal 102 finishes the defrosting operation, can accurately judge the frosting degree of the air cooler according to the heat transfer coefficient of the air cooler in each operation period, and can further formulate a corresponding defrosting control strategy according to the frosting degree, so that the control terminal can control the air cooler to perform the defrosting operation as required according to the defrosting control strategy, thereby enabling the air cooler to recover a healthy (frost-free) operation state, and simultaneously reducing temperature fluctuation and unnecessary energy consumption brought by unnecessary shutdown defrosting.
It should be noted that specific types, numbers, and combinations of the edge server 101, the control terminal 102, the cloud platform 103, and the network 104 may be adjusted according to actual requirements of an application scenario, which is not limited in the embodiment of the present disclosure.
Fig. 2 is a schematic flow chart of an air cooler defrosting control method based on Yun Bian coordination provided by an embodiment of the disclosure. The air cooler defrosting control method based on cloud-edge coordination of fig. 2 may be performed by the edge server 101 of fig. 1. As shown in FIG. 2, the coordinated air cooler defrosting control method based on Yun Bian comprises the following steps:
step S201, calculating heat transfer coefficients corresponding to the air cooler of the target refrigeration house in each operation time period in a preset operation cycle.
The target cold storage can be any one or more of a food factory cold storage, a dairy product factory cold storage, a pharmaceutical factory cold storage, a medical and pharmaceutical enterprise cold storage, a chemical factory fruit and vegetable cold storage, a poultry egg cold storage, a seafood cold storage, a hotel cold storage, a supermarket cold storage, a hospital cold storage or a blood station cold storage.
The preset operation period can be flexibly set according to actual conditions, and for example, the preset operation period can be set to 1 day, 1 week and the like. And may be set to 1 day in general.
The operation time interval can be flexibly set according to the actual situation. For example, if the operation period is 1 day, 1 day (24 hours) may be divided into 24 operation periods according to a preset granularity (e.g., 1 hour), and one operation period corresponds to one hour. The granularity of the division can be flexibly adjusted according to actual conditions, for example, the granularity of the division can be 2 hours. With 2 hours as granularity, 1 day can be divided into 12 operating periods.
As an example, taking a target freezer as a certain seafood freezer in a certain coastal region as an example, the related information such as the number of refrigeration devices (such as air coolers) arranged in the seafood freezer, the device types, the arrangement positions (installation positions in the seafood freezer) and the like can be determined. Air coolers can be classified into dry type, wet type and dry and wet type according to the manner of cooling air. The air cooler is called a dry type air cooler, wherein the refrigerant or secondary refrigerant flows in the calandria and cools the air outside the calandria through the pipe wall; the sprayed secondary refrigerant liquid directly exchanges heat with air, and the air is called as a wet-type air cooler; besides the cooling exhaust pipe, the mixed type air cooler also has a secondary refrigerant spraying device.
For example, if the seafood freezer is respectively provided with one wet-type air cooler at the middle upper part of each of the four walls of the freezer, for convenience of description, the four wet-type air coolers are respectively numbered as air coolers A, B, C, D. The preset operation cycle is set to be 1 day, 1 day (24 hours) is divided into 12 operation time periods according to the granularity of 2 hours, and each operation time period is recorded as operation time periods 01, 02, 03 and 04. At this time, the edge server 101 may record the calculated heat transfer coefficients of the air cooler a in 12 operating periods of 1 day as the following array: air cooler A [ A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12], wherein A1 represents the heat transfer coefficient corresponding to the air cooler A in the operation period 01, A2 represents the heat transfer coefficient corresponding to the air cooler A in the operation period 02, and A12 represents the heat transfer coefficient corresponding to the air cooler A in the operation period 12. Similarly, the edge server 101 can also record the calculated heat transfer coefficient of the air cooler B, C, D in 12 operating periods of 1 day as the following data set:
air-coolers B [ B1, B2, B3, B4, B5, B6, B7, B8, B9, B10, B11, B12];
an air cooler C [ C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12];
air-cooler D [ D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12].
As an example, the correspondence of the heat transfer coefficient to the degree of frosting may be established in advance, such as establishing a correspondence table as shown in table 1 below.
TABLE 1 heat transfer coefficient and frosting degree corresponding relation table
It should be noted that, the descending amplitude in table 1 above refers to a comparison value between the heat transfer coefficient of the normal operation of the air cooler before frosting and the heat transfer coefficient in the subsequent operation process. The calculation formula of the descending amplitude is as follows: the drop was =100% (heattransfer coefficient for normal operation before no frost formation-heat transfer coefficient during subsequent operation)/heat transfer coefficient for normal operation before no frost formation.
Step S202, determining the corresponding frosting degree of each operation time period according to the corresponding relation between the preset heat transfer coefficient and the frosting degree.
Next, the frosting degree of the heat transfer coefficient of the air cooler A, B, C, D in each operation period can be determined according to table 1 above. Taking the air cooler a as an example, assuming that the frosting degree of the air cooler a in 12 operation periods of 1 day is determined as [ none, none, light, medium, medium, heavy ].
Similarly, the frosting degree corresponding to each operation time period of the air cooler B, C, D may be determined by referring to the determination method of the air cooler a, and is not described herein again.
Step S203, a defrosting control strategy is determined according to the frosting degree, and the defrosting control strategy comprises a defrosting execution time interval and a defrosting control parameter corresponding to the defrosting execution time interval.
And then, a corresponding defrosting control strategy can be formulated according to the frosting degree corresponding to each operation time period of the air cooler A. For example, in the operation period of 01-03, the frosting degree corresponding to the air cooler A is frostless, which indicates that the heat transfer coefficient is good and the defrosting operation is not needed. And in the operation time period of 04-12, the frosting degree of the air cooler corresponds to frosting of different degrees. At this time, a corresponding defrosting control strategy can be formulated according to actual conditions, wherein the defrosting control strategy comprises a defrosting execution time interval and a defrosting control parameter corresponding to the defrosting execution time interval.
Similarly, the defrosting control strategy corresponding to each operation time period of the air cooler B, C, D may be determined by referring to the determination method of the air cooler a, and is not described herein again.
And S204, issuing the defrosting control strategy to a control terminal of the target refrigeration house, so that the control terminal controls the air cooling machine to execute defrosting operation according to the defrosting control strategy and feeds back an execution result of the defrosting operation.
Next, the edge server 101 may issue the defrosting control policy of the air cooler A, B, C, D to the control terminal 102 of the target refrigeration storage (seafood refrigeration storage). When receiving the defrosting control strategy of air cooler A, B, C, D, control terminal 102 controls air cooler A, B, C, D to execute the defrosting operation according to the defrosting control strategy of air cooler A, B, C, D, respectively, and feeds back the execution result of the defrosting operation to edge server 101.
Step S205, sending the execution result to the cloud platform, so that the cloud platform verifies the execution result, and when the verification passes, issuing an instruction for ending the defrosting operation to the control terminal.
After receiving the execution result, the edge server 101 sends the execution result to the cloud platform 103, and after receiving the execution result, the cloud platform 103 verifies the execution result, mainly verifies the defrosting condition of the heat exchanger of each air cooler after the defrosting operation is executed in each operation period of each air cooler, and after determining that the heat exchanger of each air cooler recovers a frostless state, can determine that the execution result passes the verification, and issue an instruction for ending the defrosting operation to the control terminal 102. After receiving the defrosting operation ending instruction, the control terminal 102 ends the defrosting operation.
The technical scheme provided by the embodiment of the disclosure is applied to the edge server, and the heat transfer coefficients corresponding to the air cooler of the target refrigeration house in each operation time period in the preset operation cycle are calculated; determining the frosting degree corresponding to each operation time period according to the corresponding relation between the preset heat transfer coefficient and the frosting degree; determining a defrosting control strategy according to the frosting degree, wherein the defrosting control strategy comprises a defrosting execution time interval and a defrosting control parameter corresponding to the defrosting execution time interval; the defrosting control strategy is issued to a control terminal of the target refrigeration house, so that the control terminal controls a cooling fan to execute defrosting operation according to the defrosting control strategy and feeds back the execution result of the defrosting operation; the execution result is sent to the cloud-end platform, so that the cloud-end platform verifies the execution result, when the verification is passed, an instruction for finishing the defrosting operation is issued to the control terminal, the frosting degree of the air cooler can be accurately judged according to the heat transfer coefficient of the air cooler in each operation period, and a corresponding defrosting control strategy can be further formulated according to the frosting degree, so that the control terminal can control the air cooler to execute the defrosting operation as required according to the defrosting control strategy, so that the air cooler can recover a healthy (frost-free) operation state, and meanwhile, the temperature fluctuation and unnecessary energy consumption caused by unnecessary shutdown defrosting are reduced.
In some embodiments, the step S201 may specifically include the following steps:
collecting refrigerating capacity corresponding to each operation time period of the air cooler in a preset operation cycle, heat exchange area of a heat exchanger of the air cooler, air inlet temperature of an air inlet side and air outlet temperature of an air outlet side of the heat exchanger, and air supply quantity of the heat exchanger;
and calculating the heat transfer coefficient corresponding to each operation time period of the air cooler in a preset operation cycle according to the refrigerating capacity, the heat exchange area, the air inlet temperature, the air outlet temperature and the air supply quantity.
Refrigeration capacity refers to the sum of the heat removed from an enclosed space, room or area per unit time during a refrigeration operation of a refrigeration device (e.g., an air cooler).
The heat exchange area of the heat exchanger refers to the area of a contact part of the heat exchanger and a medium (such as air, water, refrigerant and the like).
Referring to fig. 3, air-cooler 300 includes: the heat exchanger 302 comprises an air inlet side and an air outlet side, and the air inlet side and the air outlet side can be provided with a temperature measuring device (such as a thermometer), a pressure measuring device (such as a pressure gauge) and a flow meter (not shown in the figure). The temperature measuring device, the pressure measuring device and the flowmeter at the air inlet side and the air outlet side of the heat exchanger can measure the air inlet temperature at the air inlet side and the air outlet temperature at the air outlet side of the heat exchanger and the air supply quantity of the heat exchanger. According to the obtained refrigerating capacity and heat exchange area of the air cooler in each operation time period in the preset operation cycle, the measured air inlet temperature, air outlet temperature and air supply quantity, the heat transfer coefficient corresponding to each operation time period of the air cooler in the preset operation cycle can be calculated. Specifically, the heat transfer coefficient K corresponding to each operation period of the air cooler can be calculated according to the following formula: qi = Ki Li Si Delta Ti, wherein Qi represents the cooling capacity corresponding to the air cooler in the ith operation time interval, ki represents the heat transfer coefficient corresponding to the air cooler in the ith operation time interval, li represents the air supply capacity corresponding to the air cooler in the ith operation time interval, si represents the heat exchange area corresponding to the air cooler in the ith operation time interval, and Delta Ti represents the temperature difference value between the air inlet temperature and the air outlet temperature corresponding to the air cooler in the ith operation time interval.
In some embodiments, the step S203 may specifically include the following steps:
determining an operation time period in which the frosting degree meets a preset defrosting starting condition as a defrosting execution time period;
determining a defrosting grade of a frosting degree corresponding to a defrosting execution time period;
and (4) calling defrosting control parameters corresponding to the defrosting grades, wherein the defrosting control parameters comprise defrosting power and defrosting time.
The preset defrosting starting condition can be that the frosting degree is more than slight frosting, namely, the frosting degree comprises slight frosting, moderate frosting and severe frosting. The defrosting starting condition can be specifically determined according to the degree of the influence of the frosting degree on the refrigeration performance of the air cooler. The proper defrosting starting condition can be determined according to the frosting degree when the air cooler is simulated in a laboratory from the non-frosting normal operation and frosting gradually occurs in the operation process to cause the abnormal operation or the serious energy consumption condition. Namely, when the air cooler is frosted to what extent, the defrosting needs to be started. Meanwhile, the relationship between the starting time of defrosting, the defrosting efficiency and effect and the defrosting energy consumption can be verified, so that the most suitable defrosting starting time can be determined.
As an example, in connection with the above example, it is assumed that the preset defrosting start condition is that the frosting degree is moderate frosting and severe frosting, and the frosting degree of the air-cooler a in the operation period 06-12 is medium, heavy, respectively. The operation periods 06 to 12 of the air-cooler a can thus be determined as defrosting execution periods of the air-cooler a.
Then, the defrosting grade of each defrosting execution time interval can be determined according to the corresponding relation between the preset frosting degree and the defrosting grade. For example, a defrosting level in which the degree of frosting is heavy frosting may be set as one level, and a defrosting level in which the degree of frosting is moderate frosting may be set as two levels. Wherein, the defrosting grade is first grade, which means that the defrosting grade is highest, second grade and third grade. Generally, the higher the defrosting grade is, the larger the corresponding frosting degree is, the longer the required defrosting time is, and the larger the defrosting power is.
As an example, the correspondence between the defrosting level and the defrosting control parameter may be established in advance. And subsequently, corresponding defrosting control parameters can be determined according to the defrosting grade, so that a defrosting control strategy corresponding to each operation time interval of the air cooler is determined.
In some embodiments, the execution result includes image information. The control terminal 102 controls the air cooling fan to execute the defrosting operation according to the defrosting control strategy, and feeds back the execution result of the defrosting operation, and the method specifically comprises the following steps:
controlling a defrosting device arranged on a heat exchanger of the air cooler to execute defrosting operation according to defrosting power and recording the execution duration of the defrosting operation in a defrosting execution time period;
and when the execution time reaches the defrosting time, controlling a monitoring device in the target cold storage to acquire the image information of the heat exchanger and feeding back the image information.
The defrosting device can be a heating device (such as an electric heating rod) arranged in the air cooler. Preferably, the heating device can be arranged near the heat exchanger of the air cooler, so that the heating of the fin of the heat exchanger and the surface of the steel pipe can be accelerated, the frost formation layer is melted (namely, frost is melted), the frost melting efficiency is improved, the frost melting time is shortened, and the frost melting energy consumption is saved.
As an example, the air-cooler a performs a defrosting operation in the operation period 06. In the operation period 06, the control terminal 102 may control the air cooler a to stop the cooling operation, control the defrosting device therein to start, adjust the defrosting power in the defrosting control strategy corresponding to the operation period, start timing when the power of the defrosting device reaches the defrosting power, and record the execution duration of the defrosting operation. When the execution time reaches the preset defrosting time, the camera device in the air cooler a can be controlled to collect the image information of the heat exchanger, and the image information is fed back to the edge server 101.
In some embodiments, the cloud platform 103 verifies the execution result, and issues an instruction to end the defrosting operation to the control terminal when the verification passes, and the method specifically includes the following steps:
analyzing the image information to obtain an analysis result;
judging whether the heat exchanger in the air cooler reaches a preset defrosting ending condition or not according to the analysis result;
and if the heat exchanger in the air cooler reaches the preset defrosting ending condition, the verification is passed and an instruction for ending the defrosting operation is issued to the control terminal.
The preset condition for finishing defrosting can be that a frosting layer on the heat exchanger is completely eliminated, namely that the heat exchanger is in a frostless state.
As an example, the image information is analyzed to obtain an analysis result, and specifically, the image information may be input into a pre-trained image analysis model to analyze the image information to obtain the analysis result. The interpretation result may be a probability value of the degree of frost layer elimination of the heat exchanger, wherein the degree of elimination may include complete elimination, partial elimination, and complete non-elimination. In combination with the analysis result, if it is determined that the heat exchanger in the air conditioner reaches the preset defrosting termination condition (if the frosting layer is completely eliminated), it may be determined that the execution result passes the verification, and an instruction for terminating the defrosting operation is issued to the control terminal 102. The control terminal 102 stops performing the defrosting operation when receiving the instruction. And restarting the air cooler to continue operating.
In some embodiments, if the heat exchanger in the air cooler does not reach a preset defrosting ending condition, finding out a defrosting position to be adjusted on the heat exchanger of the air cooler according to an analysis result; and determining a defrosting intervention measure according to the defrosting degree of the defrosting position to be adjusted.
In combination with the above example, it is assumed that, in the operation period 06, after the air cooler a operates according to the preset defrosting power for the preset defrosting time, the image information of the heat exchanger is fed back to the cloud platform 103, the cloud platform 103 analyzes the image information, and an obtained analysis result is that the frosting layer is partially eliminated, that is, the preset defrosting ending condition is not reached. At this moment, can control cloud platform 103 through operating personnel, find out the defrosting position of waiting to adjust on the heat exchanger of air-cooler through manual analysis, the position that frosting layer was not eliminated completely on the heat exchanger of air-cooler promptly to further confirm the defrosting degree (like the remaining thickness on frosting layer, the weight on frosting layer etc.) of the defrosting position of waiting to adjust. And then, determining a defrosting intervention measure according to the defrosting degree of the defrosting position to be adjusted.
Specifically, any one or more of the installation position of a defrosting device on a heat exchanger of the air cooler, the defrosting power or the defrosting duration can be adjusted according to the defrosting degree of the defrosting position to be adjusted, so as to generate a defrosting intervention instruction; and issuing a defrosting intervention instruction to the control terminal so that the control terminal adjusts the defrosting operation on the heat exchanger of the air cooler according to the defrosting intervention instruction.
As an example, the position of the defrosting device in the air cooler can be adjusted by means of manual intervention (or robot intervention), i.e. the position of the defrosting device in the air cooler is rearranged. The principle of the adjustment is as follows: for the position with larger frost formation layer thickness, the defrosting device can be arranged relatively densely, and/or the defrosting time length is prolonged, and/or the defrosting power is increased. For the position with the smaller frosting layer thickness, the defrosting device can be arranged sparsely, and/or the defrosting time length is slightly prolonged (the prolonging amplitude is generally smaller than that of the position with the larger frosting layer thickness), or the defrosting power is slightly increased (the increasing amplitude is generally smaller than that of the position with the larger frosting layer thickness).
And the defrosting intervention instruction comprises the adjusted defrosting power and/or defrosting time and/or the adjusted layout position of the defrosting device.
In some embodiments, the edge server 101 may calculate a historical heat transfer coefficient corresponding to each operation period of the air-cooler in the preset operation cycle according to the collected refrigeration operation historical data of each operation period of the air-cooler in the preset operation cycle (such as the previous operation cycle), where the refrigeration operation historical data includes a refrigeration amount, a heat exchange area, an intake air temperature, an exhaust air temperature, and an air supply amount of each operation period of the air-cooler in the preset operation cycle. Then, determining the corresponding frosting degree of each operation time period according to the corresponding relation between the preset heat transfer coefficient and the frosting degree; a defrosting control strategy for future operation (such as the next operating cycle) of the air cooler is determined according to the frosting degree. And issuing the defrosting control strategy to a control terminal of the target refrigeration house. When the control terminal receives the defrosting control strategy, the control terminal can control the air cooler to stop the refrigeration operation when the air cooler runs to the first defrosting execution time period (such as the operation time period 06) of the defrosting control strategy in the refrigeration operation process of the next operation cycle when the air cooler enters the refrigeration operation process of the next operation cycle, execute the defrosting operation according to the defrosting power and the defrosting time period corresponding to the operation time period 06 of the received defrosting control strategy, and feed back the execution result of the defrosting operation to the edge service end; after receiving the execution result, the edge server sends the execution result to the cloud platform, and when receiving the execution result, the cloud platform verifies the execution result, and when the verification is passed (for example, it is determined that a frosting layer of a heat exchanger of the air cooler a is completely eliminated), the edge server issues an instruction for finishing the defrosting operation to the control terminal. After receiving the instruction, the control terminal stops the defrosting operation (i.e., turns off the defrosting device), and restarts the air cooler a to perform the cooling operation. And then, when the air cooler A enters the next operation time interval 07, monitoring and acquiring the refrigerating capacity, the heat exchange area, the inlet air temperature, the outlet air temperature and the air supply quantity of the air cooler A in real time, calculating the heat transfer coefficient of the air cooler A in the operation time interval 07, determining the corresponding frosting degree according to the heat transfer coefficient, and if the determined frosting degree is inconsistent with the frosting degree corresponding to the operation time interval 07 in the previous frosting strategy, re-determining the frosting control strategy of the operation time interval 07 according to the frosting degree determined by the heat transfer coefficient acquired by acquiring data in real time and calculating. For example, assuming that the operation period 07 in the previous defrosting strategy corresponds to moderate frosting, the corresponding defrosting control strategy includes a defrosting execution period being the operation period 07, a defrosting power being W2, and a defrosting time being t2. And according to the real-time collected data, the frosting degree determined by the calculated heat transfer coefficient is light frosting, so that the frosting degree corresponding to the operation time interval 07 of the air cooler can be determined to be light frosting. At this time, the defrosting control strategy of the operation period 07 may be adjusted according to the actual frosting degree as follows: the operation time period 07, the defrosting power is W2', and the defrosting time period is t2'.
It can be understood that, for other operation periods after the operation period 07, the defrosting control strategy of the air cooler can also be flexibly adjusted by referring to the above method, so as to reduce the temperature fluctuation and unnecessary energy consumption caused by unnecessary shutdown defrosting while avoiding the "sick" (i.e. frosting) operation of the refrigeration equipment.
All the above optional technical solutions may be combined arbitrarily to form optional embodiments of the present application, and are not described in detail herein.
The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods. For details not disclosed in the embodiments of the apparatus of the present disclosure, refer to the embodiments of the method of the present disclosure.
Fig. 4 is a schematic structural diagram of an edge server according to an embodiment of the present disclosure. As shown in fig. 4, the edge server includes:
the calculating module 401 is configured to calculate heat transfer coefficients corresponding to the air coolers of the target refrigeration storage in each operation time period in a preset operation cycle;
a frosting determination module 402 configured to determine a frosting degree corresponding to each operation period according to a preset correspondence relationship between a heat transfer coefficient and a frosting degree;
a strategy determination module 403 configured to determine a defrosting control strategy according to the frosting degree, wherein the defrosting control strategy comprises a defrosting execution time period and a defrosting control parameter corresponding to the defrosting execution time period;
the issuing module 404 is configured to issue the defrosting control strategy to a control terminal of the target refrigerator, so that the control terminal controls the air cooling machine to execute the defrosting operation according to the defrosting control strategy and feeds back an execution result of the defrosting operation;
the sending module 405 is configured to send the execution result to the cloud platform, so that the cloud platform verifies the execution result, and when the verification passes, issue an instruction for ending the defrosting operation to the control terminal.
According to the technical scheme provided by the embodiment of the disclosure, the heat transfer coefficients corresponding to the air cooler of the target refrigeration storage in each operation time period in the preset operation cycle are calculated through the calculation module 401; the frosting determination module 402 determines the frosting degree corresponding to each operation time period according to the corresponding relationship between the preset heat transfer coefficient and the frosting degree; the strategy determination module 403 determines a defrosting control strategy according to the frosting degree, wherein the defrosting control strategy comprises a defrosting execution time period and a defrosting control parameter corresponding to the defrosting execution time period; the issuing module 404 issues the defrosting control strategy to a control terminal of the target refrigerator, so that the control terminal controls the air cooling machine to execute defrosting operation according to the defrosting control strategy and feeds back an execution result of the defrosting operation; the sending module 405 sends the execution result to the cloud platform, so that the cloud platform verifies the execution result, and when the verification passes, an instruction for finishing the defrosting operation is issued to the control terminal, the frosting degree of the air cooler can be accurately judged according to the heat transfer coefficient of the air cooler in each operation time period, and a corresponding defrosting control strategy can be further formulated according to the frosting degree, so that the control terminal can control the air cooler to execute the defrosting operation as required according to the defrosting control strategy, so that the air cooler can recover a healthy (frost-free) operation state, and meanwhile, the temperature fluctuation and unnecessary energy consumption caused by unnecessary shutdown defrosting are reduced.
In some embodiments, the policy determining module 403 includes:
a period determination unit configured to determine an operation period in which a degree of frosting satisfies a preset defrosting start condition as a defrosting execution period;
a level determination unit configured to determine a defrosting level of a frosting degree corresponding to a defrosting execution period;
the defrosting control unit is used for controlling defrosting of the refrigerator according to the defrosting level, and comprises a defrosting power and a defrosting time length.
In some embodiments, the upper execution result includes image information. Controlling the air cooling machine to execute defrosting operation according to the defrosting control strategy, and feeding back the execution result of the defrosting operation, wherein the defrosting operation comprises the following steps:
controlling a defrosting device installed on a heat exchanger of an air cooler to execute defrosting operation according to defrosting power and recording the execution duration of the defrosting operation in a defrosting execution time period;
and when the execution time reaches the defrosting time, controlling a monitoring device in the target cold storage to acquire the image information of the heat exchanger and feeding back the image information.
In some embodiments, verifying the execution result, and issuing an instruction to end the defrosting operation to the control terminal when the verification passes, includes:
analyzing the image information to obtain an analysis result;
judging whether the heat exchanger in the air cooler reaches a preset defrosting ending condition or not according to the analysis result;
and if the heat exchanger in the air cooler reaches the preset defrosting finishing condition, the verification is passed and an instruction for finishing the defrosting operation is issued to the control terminal.
In some embodiments, after determining whether the heat exchanger in the air conditioner reaches the preset defrosting termination condition according to the analysis result, the method further includes:
if the heat exchanger in the air cooler does not reach the preset defrosting ending condition, finding out the defrosting position to be adjusted on the heat exchanger of the air cooler according to the analysis result;
and determining a defrosting intervention measure according to the defrosting degree of the defrosting position to be adjusted.
In some embodiments, determining a defrosting intervention measure according to a defrosting degree of a defrosting position to be adjusted includes:
according to the defrosting degree of the defrosting position to be adjusted, any one or more of the installation position of a defrosting device on a heat exchanger of the air cooler, the defrosting power or the defrosting duration is adjusted to generate a defrosting intervention instruction;
and issuing a defrosting intervention instruction to the control terminal so that the control terminal adjusts the defrosting operation on the heat exchanger of the air cooler according to the defrosting intervention instruction.
In some embodiments, the calculating module 401 includes:
the collecting unit is configured to collect refrigerating capacity corresponding to each operation time period of the air cooler in a preset operation cycle, heat exchange area of a heat exchanger of the air cooler, air inlet temperature of an air inlet side and air outlet temperature of an air outlet side of the heat exchanger, and air supply quantity of the heat exchanger;
and the calculating unit is configured to calculate the heat transfer coefficient corresponding to each operation time interval of the air cooler in a preset operation cycle according to the refrigerating capacity, the heat exchange area, the inlet air temperature, the outlet air temperature and the air supply quantity.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by functions and internal logic of the process, and should not constitute any limitation to the implementation process of the embodiments of the present disclosure.
Fig. 5 is a schematic diagram of an electronic device 5 provided by the embodiment of the present disclosure. As shown in fig. 5, the electronic apparatus 5 of this embodiment includes: a processor 501, a memory 502 and a computer program 503 stored in the memory 502 and executable on the processor 501. The steps in the various method embodiments described above are implemented when the processor 501 executes the computer program 503. Alternatively, the processor 501 implements the functions of the respective modules/units in the above-described respective apparatus embodiments when executing the computer program 503.
The electronic device 5 may be a desktop computer, a notebook, a palm computer, a cloud server, or other electronic devices. The electronic device 5 may include, but is not limited to, a processor 501 and a memory 502. Those skilled in the art will appreciate that fig. 5 is merely an example of the electronic device 5, and does not constitute a limitation of the electronic device 5, and may include more or less components than those shown, or different components.
The Processor 501 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like.
The storage 502 may be an internal storage unit of the electronic device 5, for example, a hard disk or a memory of the electronic device 5. The memory 502 may also be an external storage device of the electronic device 5, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the electronic device 5. The memory 502 may also include both internal and external storage units of the electronic device 5. The memory 502 is used for storing computer programs and other programs and data required by the electronic device.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules, so as to perform all or part of the functions described above. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, the present disclosure may implement all or part of the flow of the method in the above embodiments, and may also be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of the above methods and embodiments. The computer program may comprise computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable medium may contain suitable additions or additions that may be required in accordance with legislative and patent practices within the jurisdiction, for example, in some jurisdictions, computer readable media may not include electrical carrier signals or telecommunications signals in accordance with legislative and patent practices.
The above examples are only intended to illustrate the technical solutions of the present disclosure, not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present disclosure, and are intended to be included within the scope of the present disclosure.
Claims (10)
1. The utility model provides an air-cooler defrosting control method based on cloud limit is coordinated which characterized in that includes:
the edge server side:
calculating heat transfer coefficients corresponding to the air coolers of the target refrigeration storage in each operation time period in a preset operation cycle;
determining the corresponding frosting degree of each operation time period according to the corresponding relation between the preset heat transfer coefficient and the frosting degree;
determining a defrosting control strategy according to the frosting degree, wherein the defrosting control strategy comprises a defrosting execution time interval and a defrosting control parameter corresponding to the defrosting execution time interval;
the defrosting control strategy is issued to a control terminal of the target refrigeration house, so that the control terminal controls the air cooler to execute defrosting operation according to the defrosting control strategy and feeds back an execution result of the defrosting operation;
and sending the execution result to a cloud end platform so that the cloud end platform verifies the execution result, and issuing a command for finishing defrosting operation to the control terminal when the verification is passed.
2. The method of claim 1, wherein determining a defrosting control strategy based on the frost formation level comprises:
determining the running time interval in which the frosting degree meets the preset defrosting starting condition as a defrosting execution time interval;
determining a defrosting grade of a frosting degree corresponding to the defrosting execution time period;
and (3) adjusting defrosting control parameters corresponding to the defrosting grades, wherein the defrosting control parameters comprise defrosting power and defrosting time.
3. The method of claim 1, wherein the execution result comprises image information;
controlling the air cooler to execute defrosting operation according to the defrosting control strategy, and feeding back an execution result of the defrosting operation, wherein the defrosting operation comprises the following steps:
controlling a defrosting device arranged on a heat exchanger of the air cooler to execute defrosting operation according to the defrosting power and recording the execution duration of the defrosting operation in the defrosting execution time period;
and when the execution time reaches the defrosting time, controlling a monitoring device in the target cold storage to acquire the image information of the heat exchanger and feeding back the image information.
4. The method according to claim 3, wherein the verifying the execution result and issuing an instruction to the control terminal to finish the defrosting operation when the verification is passed comprises:
analyzing the image information to obtain an analysis result;
judging whether a heat exchanger in the air cooler reaches a preset defrosting ending condition or not according to the analysis result;
and if the heat exchanger in the air cooler reaches a preset defrosting ending condition, the verification is passed and an instruction for ending the defrosting operation is issued to the control terminal.
5. The method according to claim 4, wherein after determining whether the heat exchanger in the air conditioner reaches a preset defrosting termination condition according to the analysis result, the method further comprises:
if the heat exchanger in the air cooler does not reach the preset defrosting ending condition, finding out the defrosting position to be adjusted on the heat exchanger of the air cooler according to the analysis result;
and determining a defrosting intervention measure according to the defrosting degree of the defrosting position to be adjusted.
6. The method according to claim 5, wherein determining a defrosting intervention measure according to the defrosting degree of the defrosting position to be adjusted comprises:
according to the defrosting degree of the defrosting position to be adjusted, adjusting any one or more of the installation position of a defrosting device on a heat exchanger of the air cooler, the defrosting power or the defrosting duration to generate a defrosting intervention instruction;
and issuing the defrosting intervention instruction to the control terminal so that the control terminal adjusts the defrosting operation on the heat exchanger of the air cooler according to the defrosting intervention instruction.
7. The method of claim 1, wherein calculating the heat transfer coefficient corresponding to each operating period of the air cooler of the target refrigeration storage within the preset operating cycle comprises:
the method comprises the steps of collecting refrigerating capacity corresponding to each operation time period of an air cooler in a preset operation cycle, heat exchange area of a heat exchanger of the air cooler, air inlet temperature of an air inlet side and air outlet temperature of an air outlet side of the heat exchanger, and air supply quantity of the heat exchanger;
and calculating the heat transfer coefficients corresponding to each operation time interval of the air cooler in a preset operation cycle according to the refrigerating capacity, the heat exchange area, the air inlet temperature, the air outlet temperature and the air supply quantity.
8. An edge server, comprising:
the calculating module is configured to calculate heat transfer coefficients corresponding to the air cooler of the target refrigeration house in each operation time period in a preset operation cycle;
the frosting determination module is configured to determine the frosting degree corresponding to each operation time period according to the corresponding relation between the preset heat transfer coefficient and the frosting degree;
a strategy determination module configured to determine a defrosting control strategy according to the frosting degree, wherein the defrosting control strategy comprises a defrosting execution time period and a defrosting control parameter corresponding to the defrosting execution time period;
the issuing module is configured to issue the defrosting control strategy to a control terminal of the target refrigeration house, so that the control terminal controls the air cooler to execute defrosting operation according to the defrosting control strategy and feeds back an execution result of the defrosting operation;
the sending module is configured to send the execution result to a cloud-end platform so that the cloud-end platform verifies the execution result, and when the verification passes, an instruction for ending the defrosting operation is issued to the control terminal.
9. An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
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| CN202210718226.XA CN115307370B (en) | 2022-06-23 | 2022-06-23 | Defrosting control method and device for air cooler based on Yun Bian coordination |
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| CN116498892A (en) * | 2023-06-30 | 2023-07-28 | 中建安装集团有限公司 | Mist-discharging and frosting-preventing method for LNG air-temperature type gasifier |
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| CN116498892B (en) * | 2023-06-30 | 2023-08-29 | 中建安装集团有限公司 | Mist-discharging and frosting-preventing method for LNG air-temperature type gasifier |
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| CN115307370B (en) | 2024-03-05 |
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