CN115307370B - Defrosting control method and device for air cooler based on Yun Bian coordination - Google Patents
Defrosting control method and device for air cooler based on Yun Bian coordination Download PDFInfo
- Publication number
- CN115307370B CN115307370B CN202210718226.XA CN202210718226A CN115307370B CN 115307370 B CN115307370 B CN 115307370B CN 202210718226 A CN202210718226 A CN 202210718226A CN 115307370 B CN115307370 B CN 115307370B
- Authority
- CN
- China
- Prior art keywords
- defrosting
- air cooler
- heat exchanger
- control terminal
- frosting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010257 thawing Methods 0.000 title claims abstract description 403
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000011217 control strategy Methods 0.000 claims abstract description 68
- 238000005057 refrigeration Methods 0.000 claims abstract description 64
- 238000012546 transfer Methods 0.000 claims abstract description 52
- 238000012795 verification Methods 0.000 claims abstract description 18
- 238000004590 computer program Methods 0.000 claims description 17
- 238000004458 analytical method Methods 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 5
- 238000012806 monitoring device Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 13
- 201000010099 disease Diseases 0.000 abstract description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 235000014102 seafood Nutrition 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 235000012055 fruits and vegetables Nutrition 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
- F25D2600/06—Controlling according to a predetermined profile
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- 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 all operation periods of the air cooler of the target refrigeration house in a preset operation period; determining the frosting degree corresponding to each operation period according to the heat transfer coefficient; determining a defrosting control strategy according to the frosting degree; issuing a defrosting control strategy to a control terminal so that the control terminal controls the air cooler 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 when the verification passes, issuing an instruction for ending the defrosting operation to the control terminal. The method and the device 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 caused by unnecessary shutdown defrosting while avoiding the operation of the refrigeration equipment with diseases.
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 edge coordination.
Background
In the running process of the refrigerator, the door of the refrigerator is frequently opened due to frequent entry of personnel and goods, so that the air flow inside and outside the refrigerator is enhanced, and outdoor high-temperature and high-humidity air is introduced into the refrigerator. The goods (such as fruits and vegetables) directly enter the warehouse without precooling treatment, and dry consumption can be generated in the cooling and storage processes, so that the temperature and moisture content of the air in the warehouse are fluctuated. As the temperature of air gradually decreases during the circulation in the warehouse, water vapor carried by the air gradually separates out, and 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), which increases the heat exchange resistance of the refrigeration equipment and leads to the decrease of heat exchange capacity. This also means that the refrigeration unit needs to run longer, consuming more energy (e.g. electrical energy), in order to reach or maintain the same temperature.
In order to prevent or reduce frosting of the refrigeration equipment and increase equipment energy consumption, the most common solution is timing defrosting. However, although the timing defrosting can solve the problem of frosting 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 indirectly increased.
Therefore, the existing timing defrosting mechanism cannot flexibly and accurately judge the frosting degree of the heat exchanger of the refrigeration equipment, and can not reduce the temperature fluctuation and unnecessary energy consumption caused by unnecessary shutdown defrosting while avoiding the operation of the refrigeration equipment with diseases (namely frosting).
Disclosure of Invention
In view of the above, the embodiments of the present disclosure provide a method and an apparatus for controlling defrosting of an air cooler 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 the problem that temperature fluctuation and unnecessary energy consumption caused by unnecessary shutdown defrosting cannot be reduced while avoiding the operation of the refrigeration device with diseases (i.e., frosting) cannot be solved.
In a first aspect of the embodiments of the present disclosure, a method for controlling defrosting of an air cooler based on cloud edge coordination is provided, including:
calculating heat transfer coefficients corresponding to all operation periods of the air cooler of the target refrigeration house in a preset operation period;
determining the frosting degree corresponding to each operation 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 period and defrosting control parameters corresponding to the defrosting execution period;
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 the execution result of the defrosting operation is fed back;
and 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.
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 all operation periods of the air cooler of the target refrigeration house in a preset operation period;
the frosting determining module is configured to determine the frosting degree corresponding to each operation period according to the corresponding relation between the preset heat transfer coefficient and the frosting degree;
the defrosting control system comprises a strategy determining module, a defrosting control module and a control module, wherein the strategy determining module is configured to determine a defrosting control strategy according to the frosting degree, the defrosting control strategy comprises a defrosting execution period and defrosting control parameters corresponding to the defrosting execution period;
the issuing module is configured to issue a 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 the cloud platform so that the cloud platform verifies the execution result and sends an instruction for ending the defrosting operation to the control terminal when the verification passes.
In a third aspect of the disclosed embodiments, an electronic device is provided, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the above method when executing the computer program.
In a fourth aspect of the disclosed embodiments, a computer-readable storage medium is provided, which stores a computer program which, when executed by a processor, implements the steps of the above-described method.
Compared with the prior art, the embodiment of the disclosure has the beneficial effects that: the method and the device can be applied to the edge server, and the heat transfer coefficients corresponding to all operation periods of the air cooler of the target refrigeration house in a preset operation period are calculated; determining the frosting degree corresponding to each operation 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 period and defrosting control parameters corresponding to the defrosting execution period; 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 the execution result of the defrosting operation is fed back; the execution result is sent to the cloud platform, so that the cloud platform verifies the execution result, and when verification passes, an instruction for ending defrosting operation is issued to the control terminal, so that 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 defrosting operation according to the defrosting control strategy, and the cold air cooler can recover a healthy (frostless) operation state, and meanwhile, temperature fluctuation and unnecessary energy consumption caused by unnecessary shutdown defrosting are reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings that are required for the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a schematic view of an application scenario according to an embodiment of the present disclosure;
fig. 2 is a timing sequence flow diagram of an air cooler defrosting control method based on Yun Bian coordination according to an embodiment of the disclosure;
fig. 3 is a schematic structural diagram of an air cooler in an air cooler defrosting control method based on Yun Bian coordination according to an embodiment of the disclosure;
fig. 4 is a schematic structural diagram of an air cooler defrosting control device based on Yun Bian coordination according to an embodiment of the disclosure;
fig. 5 is a schematic structural diagram of an electronic device according to 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 configurations, 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.
A method and apparatus for controlling defrosting of an air cooler based on Yun Bian coordination according to embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic view 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 close to the control terminal 102 of the target refrigerator (e.g., in the same area, park, etc. as the control terminal 102). By way of example, the edge servers may be devices model SE350, XE2420 and 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 smartphones, tablets, laptop and desktop computers, etc.; 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 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 a data processing application, an instant messaging tool, social platform software, a search class application, a shopping class application, and the like.
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 using coaxial cable, twisted pair wire, and optical fiber connection, or may be a wireless network that can implement interconnection of various communication devices without wiring, for example, bluetooth (Bluetooth), near field communication (Near Field Communication, NFC), infrared (Infrared), etc., which are not limited by the embodiments of the present disclosure.
In the running process of the refrigeration house, the edge service end 101 can calculate the heat transfer coefficient corresponding to each running period of the air cooler of the target refrigeration house in a preset running period; determining the frosting degree corresponding to each operation 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 period and defrosting control parameters corresponding to the defrosting execution period; then the defrosting control strategy is issued to the control terminal 102 of the target refrigeration house, the control terminal 102 can control the air cooler to execute defrosting operation according to the defrosting control strategy, and the execution result of the defrosting operation is fed back to the edge server 101; when the edge server 101 receives the execution result, the execution result is sent to the cloud platform 103, the cloud platform 103 verifies the execution result, and when the execution result passes the verification, an instruction for ending the defrosting operation is issued to the control terminal 102, and when the control terminal 102 receives the instruction for ending the defrosting operation, the defrosting operation is ended, 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 formulated according to the frosting degree, so that the control terminal can control the air cooler to execute the defrosting operation according to the defrosting control strategy, and the cold air cooler can recover a healthy (frostless) operation state, and meanwhile, the temperature fluctuation and unnecessary energy consumption caused by unnecessary shutdown defrosting are reduced.
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 the application scenario, which is not limited in the embodiments of the present disclosure.
Fig. 2 is a schematic flow chart of an air cooler defrosting control method based on Yun Bian coordination according to an embodiment of the disclosure. The cloud-edge coordination-based air cooler defrosting control method of fig. 2 can be executed by the edge server 101 of fig. 1. As shown in fig. 2, the method for controlling defrosting of the air cooler based on Yun Bian coordination comprises the following steps:
step S201, calculating heat transfer coefficients corresponding to all operation periods of the air cooler of the target refrigeration house in a preset operation period.
The target refrigeration house can be any one or more of a food factory refrigeration house, a dairy factory refrigeration house, a pharmaceutical factory refrigeration house, a medical drug enterprise refrigeration house, a chemical plant fruit and vegetable refrigeration house, an egg refrigeration house, a seafood refrigeration house, a hotel refrigeration house, a supermarket refrigeration house, a hospital refrigeration house or a blood station refrigeration house.
The preset operation period can be flexibly set according to practical situations, for example, can be set to be 1 day, 1 week and the like. Typically, it can be set to 1 day.
The operation time period can be flexibly set according to actual conditions. For example, the operation period is 1 day, and then 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 practical situations, for example, the granularity of the division can be 2 hours. With 2 hours as the granularity, 1 day can be divided into 12 operating periods.
As an example, taking a target refrigerator as a seafood refrigerator in a coastal area, the number of refrigeration devices (such as air coolers) arranged in the seafood refrigerator, the type of the devices, the arrangement position (the installation position in the seafood refrigerator) and other relevant information can be determined. The air cooler can be divided into three types of dry type, wet type and dry-wet type according to the mode adopted by cooling air. Wherein, the refrigerant or secondary refrigerant flows in the calandria, and cools the air outside the tube through the tube wall to be called as a dry air cooler; the sprayed secondary refrigerant liquid directly exchanges heat with air and is called a wet air cooler; the mixed air cooler is provided with a spraying device for the secondary refrigerant besides the cooling calandria.
For example, if the seafood refrigerator is provided with one wet type air cooler at the middle and upper parts of the four walls of the refrigerator, the four wet type air coolers are respectively numbered as air coolers A, B, C, D for convenience of description. The preset operation period is set to be 1 day, 1 day (24 hours) is divided into 12 operation periods according to granularity of 2 hours, and each operation period is recorded as operation period 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 operation 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 a heat transfer coefficient corresponding to air cooler a in operation period 01, A2 represents a heat transfer coefficient corresponding to air cooler a in operation period 02. Similarly, the edge server 101 may also record the calculated heat transfer coefficients of the air cooler B, C, D in 12 operation periods of 1 day as the following array:
Air cooler B [ B1, B2, B3, B4, B5, B6, B7, B8, B9, B10, B11, B12];
air cooler C [ C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12];
air coolers D [ D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12].
As an example, a correspondence relationship between the heat transfer coefficient and the frosting degree may be established in advance, such as a correspondence relationship table as shown in table 1 below.
TABLE 1 correspondence table of heat transfer coefficient and frosting degree
The decreasing amplitude in table 1 above refers to a comparison value of the heat transfer coefficient of the air cooler in normal operation before frosting and the heat transfer coefficient in the subsequent operation. The calculation formula of the drop amplitude is: the decrease in amplitude=100% (heat transfer coefficient of normal operation before non-frosting-heat transfer coefficient during subsequent operation)/heat transfer coefficient of normal operation before non-frosting.
Step S202, determining the frosting degree corresponding to each operation 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 corresponding to each operation period may be determined according to the above table 1. Taking air cooler a as an example, assume that the degree of frosting of air cooler a during 12 operating periods of 1 day is determined to be no according to table 1 above, none, light, medium, heavy ].
Similarly, the frosting degree corresponding to each operation period of the air cooler B, C, D can be determined by referring to the determination manner of the air cooler a, which is not described herein.
Step S203, determining a defrosting control strategy according to the frosting degree, wherein the defrosting control strategy comprises a defrosting execution period and defrosting control parameters corresponding to the defrosting execution period.
And then, a corresponding defrosting control strategy can be formulated according to the frosting degree corresponding to each operation period of the air cooler A. For example, in the operation period 01-03, the frosting degree corresponding to the air cooler A is no frosting, so that the heat transfer coefficient is good, and the defrosting operation is not needed. And in the operation period 04-12, the frosting degree of the air cooler corresponds to frosting of different degrees. At this time, a corresponding defrosting control policy may be formulated according to the actual situation, including a defrosting execution period, and defrosting control parameters corresponding to the defrosting execution period.
Similarly, the defrosting control strategy corresponding to each operation period of the air cooler B, C, D can be determined by referring to the determination manner of the air cooler a, which is not described herein.
And S204, issuing the defrosting control strategy to a control terminal of the target refrigeration house so that the control terminal controls the air cooler to perform defrosting operation according to the defrosting control strategy and feeds back the execution result of the defrosting operation.
Then, 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 refrigerator (seafood refrigerator). When receiving the defrosting control strategy of the air cooler A, B, C, D, the control terminal 102 controls the air cooler A, B, C, D to perform defrosting operation according to the defrosting control strategy of the air cooler A, B, C, D, and feeds back the execution result of the defrosting operation to the edge server 101.
Step S205, the execution result is sent 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.
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 to verify the defrosting condition of the heat exchanger of each air cooler after performing defrosting operation in each operation period of each air cooler, and after determining that the heat exchanger of the air cooler is restored to a frostless state, the cloud platform 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 instruction for ending the defrosting operation, the control terminal 102 ends the defrosting operation.
The technical scheme provided by the embodiment of the disclosure is applied to an edge server, and the heat transfer coefficients corresponding to all operation periods of the air cooler of the target refrigeration house in a preset operation period are calculated; determining the frosting degree corresponding to each operation 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 period and defrosting control parameters corresponding to the defrosting execution period; 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 the execution result of the defrosting operation is fed back; the execution result is sent to the cloud platform, so that the cloud platform verifies the execution result, and when verification passes, an instruction for ending defrosting operation is issued to the control terminal, so that 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 defrosting operation according to the defrosting control strategy, and the cold air cooler can recover a healthy (frostless) operation state, and meanwhile, 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:
the method comprises the steps of collecting refrigerating capacity corresponding to each operation period of an air cooler in a preset operation period, 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 period of the air cooler in a preset operation period according to the refrigerating capacity, the heat exchange area, the air inlet temperature, the air outlet temperature and the air supply capacity.
Refrigeration capacity refers to the sum of the heat removed from a confined space, room or area per unit time during a refrigeration operation of a refrigeration appliance, such as an air cooler.
The heat exchange area of the heat exchanger refers to the area of the contact part of the heat exchanger and a medium (such as air, water, refrigerant and the like).
Referring to fig. 3, an air cooler 300 includes: the device comprises a shell 301, a heat exchanger 302 arranged inside the shell 301, a fan assembly 303 arranged inside the shell 301, a camera device 304 arranged inside the shell 301, wherein 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 flowmeter (not shown in the figure). The air inlet temperature of the air inlet side and the air outlet temperature of the air outlet side of the heat exchanger and the air supply quantity of the heat exchanger can be measured through the temperature measuring device, the pressure measuring device and the flowmeter. According to the obtained refrigerating capacity and heat exchange area of the air cooler in each operation period in the preset operation period, the measured air inlet temperature, air outlet temperature and air supply quantity can be calculated to obtain the heat transfer coefficient corresponding to each operation period of the air cooler in the preset operation period. Specifically, the heat transfer coefficient K corresponding to the air cooler in each operation period can be calculated according to the following formula: qi=ki=li×si×Δti, where Qi represents the cooling capacity of the air cooler corresponding to the ith operating period, ki represents the heat transfer coefficient of the air cooler corresponding to the ith operating period, li represents the air supply capacity of the air cooler corresponding to the ith operating period, si represents the heat exchange area of the air cooler corresponding to the ith operating period, and Δti represents the temperature difference between the air inlet temperature and the air outlet temperature of the air cooler corresponding to the ith operating period.
In some embodiments, the step S203 may specifically include the following steps:
determining an operation period in which the frosting degree meets the preset frosting starting condition as a frosting execution period;
determining a defrosting grade of the frosting degree corresponding to the defrosting execution period;
and (3) invoking defrosting control parameters corresponding to the defrosting grade, wherein the defrosting control parameters comprise defrosting power and defrosting duration.
The preset defrosting starting conditions can be that the frosting degree is more than light frosting, namely light frosting, medium frosting and heavy frosting. The defrosting starting condition can be specifically determined according to the degree that the frosting degree influences the refrigerating performance of the air cooler. The proper defrosting starting condition can be determined by simulating the frosting degree of the air cooler when the air cooler starts to normally run from frosting never in a laboratory and gradually frosts in the running process so that the air cooler cannot normally run or serious energy consumption condition occurs. I.e. to what extent the air cooler needs to be started. Meanwhile, the relation between the starting time of defrosting and defrosting efficiency, effect and defrosting energy consumption can be verified, so that the most suitable defrosting starting time is determined.
As an example, in combination with the above example, it is assumed that the preset defrosting start condition is that the frosting degree is a medium frosting and a heavy frosting, and the frosting degree of the air cooler a in the operation period 06 to 12 is respectively medium, heavy. The operating periods 06 to 12 of the air cooler a can thus be determined as defrosting execution periods of the air cooler a.
Next, the defrosting grade of each defrosting execution period may be determined according to a correspondence between a preset frosting degree and a defrosting grade. For example, a frost level with a degree of heavy frost may be set to a first level, and a frost level with a degree of medium frost may be set to a second level. Wherein, the defrosting grade is first order, and the defrosting grade is highest, and second order, third order. In general, the higher the defrosting level, the greater the corresponding degree of frosting, and the longer the defrosting time period required, the greater the defrosting power.
As an example, a correspondence relationship between the defrosting level and the defrosting control parameter may be established in advance. And determining corresponding defrosting control parameters according to the defrosting grade, so as to determine the defrosting control strategy corresponding to the air cooler in each operation period.
In some embodiments, the execution result includes image information. The control terminal 102 controls the air cooler to perform defrosting operation according to the defrosting control strategy, and feeds back the execution result of the defrosting operation, and specifically includes the following steps:
under the defrosting execution period, 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 time of the defrosting operation;
When the execution time length reaches the defrosting time length, a monitoring device in the target refrigeration house is controlled to acquire the image information of the heat exchanger, and the image information is fed back.
The defrosting device can be a heating device (such as an electric heating rod and the like) arranged in the air cooler. Preferably, the heating device can be arranged at a position near the heat exchanger of the air cooler, which is beneficial to accelerating the temperature rise of the surfaces of the fins and the steel pipes of the heat exchanger, thereby promoting the melting (namely defrosting) of the frosting layer, improving the defrosting efficiency, shortening the defrosting duration and saving the defrosting energy consumption.
As an example, the air cooler a performs the defrosting operation in the operation period 06. Under the operation period 06, the control terminal 102 can control the air cooler a to stop the refrigeration operation, control the defrosting device inside the air cooler a to start, adjust the defrosting power in the defrosting control strategy corresponding to the operation period, start timing at the moment that 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 image pickup 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 when the verification passes, issues an instruction for ending the defrosting operation to the control terminal, which specifically includes the following steps:
Analyzing the image information to obtain an analysis result;
judging whether a heat exchanger in the air cooler reaches a preset defrosting condition or not according to the analysis result;
if the heat exchanger in the air cooler reaches the preset defrosting condition, verifying and issuing an instruction for ending defrosting operation to the control terminal.
The preset defrosting finishing condition can be that a frosting layer on the heat exchanger is completely eliminated, namely, the heat exchanger is in a frostless state at the moment.
As an example, the image information is parsed to obtain a parsing result, and specifically, the image information may be input into a pre-trained image parsing model to parse the image information to obtain a parsing result. The resolved result may be a probability value of a degree of frost layer removal of the heat exchanger, wherein the degree of removal may include complete removal, partial removal, and complete non-removal. If the heat exchanger in the air cooler is judged to reach the preset defrosting condition (such as the complete elimination of the frosting layer) by combining the analysis results, the execution result can be judged to pass verification, and an instruction for ending the defrosting operation is issued to the control terminal 102. Upon receiving the instruction, the control terminal 102 stops performing the defrosting operation. Restarting the air cooler and continuing to operate.
In some embodiments, if the heat exchanger in the air cooler does not reach the preset defrosting ending condition, searching a defrosting position to be adjusted on the heat exchanger of the air cooler according to the analysis result; and determining defrosting intervention measures according to the defrosting degree of the defrosting position to be adjusted.
In combination with the above example, it is assumed that, after the air cooler a operates according to its preset defrosting power for a preset defrosting duration in the operation period 06, image information of the heat exchanger is fed back to the cloud platform 103, and the cloud platform 103 parses the image information to obtain a parsing result that the frosting layer is partially removed, that is, a preset defrosting ending condition is not reached. At this time, the cloud platform 103 can be controlled by an operator, and the position to be adjusted on the heat exchanger of the air cooler, namely the position where the frosting layer is not completely eliminated on the heat exchanger of the air cooler, can be found through manual analysis, and the frosting degree (such as the residual thickness of the frosting layer, the weight of the frosting layer and the like) of the position to be adjusted can be further determined. And then determining defrosting intervention measures according to the defrosting degree of the defrosting position to be adjusted.
Specifically, according to the defrosting degree of the defrosting position to be adjusted, any one or more of the installation position, defrosting power or defrosting duration of a defrosting device on a heat exchanger of the air cooler can be adjusted, and a defrosting intervention instruction is generated; and issuing a defrosting intervention instruction to the control terminal so that the control terminal adjusts defrosting operation of 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 may be adjusted by means of manual intervention (or robotic intervention), i.e. the position of the defrosting device in the air cooler is rearranged. The adjustment principle is as follows: for locations where the thickness of the frosting layer is greater, the defrosting device may be deployed relatively densely, and/or for extended periods of defrosting, and/or for increased defrosting power. For locations with smaller thickness of the frosting layer, the defrosting device can be arranged sparsely and/or with a slightly longer defrosting time (the extension is generally smaller than that of locations with larger thickness of the frosting layer), or with a slightly increased defrosting power (the increase is generally smaller than that of locations with larger thickness of the frosting layer).
And the defrosting intervention instruction comprises adjusted defrosting power and/or defrosting duration and/or an adjusted layout position of the defrosting device.
In some embodiments, the edge server 101 may calculate, according to the collected refrigeration operation history data of each operation period of the air cooler in the preset operation period (the previous operation period), the refrigeration operation history data including the refrigeration capacity, the heat exchange area, the air inlet temperature, the air outlet temperature and the air supply capacity of each operation period of the air cooler in the preset operation period, and the historical heat transfer coefficient corresponding to each operation period of the air cooler in the preset operation period. Then, determining the frosting degree corresponding to each operation period according to the corresponding relation between the preset heat transfer coefficient and the frosting degree; a defrost control strategy for future operation (e.g., the next operating cycle) of the air cooler is determined based on the extent of frosting. And issuing the defrosting control strategy to a control terminal of the target refrigeration house. When receiving the defrosting control strategy, the control terminal can control the air cooler to stop the refrigeration operation when running into the first defrosting execution period (such as the running period 06) of the defrosting control strategy in the refrigerating running process of the next running period of the air cooler, execute defrosting operation according to defrosting power and defrosting duration corresponding to the running period 06 of the received defrosting control strategy, and feed back the execution result of the defrosting operation to the edge server; after receiving the execution result, the edge server sends the execution result to the cloud platform, and when the cloud platform receives the execution result, the cloud platform verifies the execution result and issues an instruction for ending the defrosting operation to the control terminal when the verification is passed (if the frosting layer of the heat exchanger of the air cooler A is completely eliminated). After receiving the instruction, the control terminal stops defrosting operation (namely, turns off the defrosting device) and restarts the air cooler A to execute refrigeration operation. Then, when the air cooler A enters the next operation period 07, the refrigerating capacity, the heat exchange area, the air inlet temperature, the air outlet temperature and the air supply capacity of the air cooler A are monitored and collected in real time, the heat transfer coefficient of the air cooler A in the operation period 07 is calculated, the corresponding frosting degree is determined according to the heat transfer coefficient, and if the determined frosting degree is inconsistent with the frosting degree corresponding to the operation period 07 in the previous frosting strategy, the frosting control strategy of the operation period 07 is redetermined according to the frosting degree determined according to the real-time collected data and the calculated heat transfer coefficient. Illustratively, assuming that the frost formation degree corresponding to the operation period 07 in the previous defrosting strategy is a medium-degree defrosting, the corresponding defrosting control strategy includes that the defrosting execution period is the operation period 07, the defrosting power is W2, and the defrosting duration is t2. And the frosting degree determined by the calculated heat transfer coefficient is light frosting according to the real-time collected data, so that the frosting degree corresponding to the running period 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: in the operation period 07, the defrosting power is W2', and the defrosting duration is t2'.
It will be appreciated that the defrosting control strategy of the air cooler can be flexibly adjusted with reference to the above method for other operation periods after the operation period 07, so as to reduce temperature fluctuation and unnecessary energy consumption caused by unnecessary shutdown defrosting while avoiding the operation of the refrigeration equipment with diseases (i.e. frosting).
Any combination of the above optional solutions may be adopted to form an optional embodiment of the present application, which is not described herein in detail.
The following are device embodiments of the present disclosure that may be used to perform method embodiments of the present disclosure. For details not disclosed in the embodiments of the apparatus of the present disclosure, please 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 disclosure. As shown in fig. 4, the edge server includes:
the calculating module 401 is configured to calculate heat transfer coefficients corresponding to each operation period of the air cooler of the target refrigeration house in a preset operation period;
a frosting determination module 402 configured to determine a frosting degree corresponding to each operation period according to a preset correspondence between a heat transfer coefficient and the frosting degree;
a policy determination module 403 configured to determine a defrosting control policy according to the degree of frosting, the defrosting control policy comprising a defrosting execution period, a defrosting control parameter corresponding to the defrosting execution period;
The issuing module 404 is configured to issue a defrosting control strategy to a control terminal of the target refrigeration house, so that the control terminal controls the air cooler to perform 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, issues 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 all operation periods of the air cooler of the target refrigeration house in a preset operation period are calculated through the calculation module 401; the frosting determination module 402 determines the frosting degree corresponding to each operation period according to the corresponding relation between the preset heat transfer coefficient and the frosting degree; the policy determination module 403 determines a defrosting control policy according to the frosting degree, the defrosting control policy including a defrosting execution period, and defrosting control parameters corresponding to the defrosting execution period; the issuing module 404 issues a defrosting control strategy to a control terminal of the target refrigeration house so that the control terminal controls the air cooler to perform defrosting operation according to the defrosting control strategy and feeds back the 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, issues an instruction for ending the defrosting operation to the control terminal, 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 according to the defrosting control strategy, and the cold air cooler can recover a healthy (frostless) operation state, and meanwhile, the temperature fluctuation and unnecessary energy consumption caused by unnecessary shutdown defrosting are reduced.
In some embodiments, the policy determination module 403 includes:
a period determining unit configured to determine an operation period in which the degree of frosting satisfies a preset frosting starting condition as a frosting execution period;
a level determining unit configured to determine a defrosting level of the frosting degree corresponding to the defrosting execution period;
and the invoking unit is configured to invoke the defrosting control parameters corresponding to the defrosting grade, wherein the defrosting control parameters comprise defrosting power and defrosting duration.
In some embodiments, the execution on results include image information. Controlling the air cooler to execute defrosting operation according to the defrosting control strategy, and feeding back the execution result of the defrosting operation, wherein the defrosting control strategy comprises the following steps:
under the defrosting execution period, 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 time of the defrosting operation;
when the execution time length reaches the defrosting time length, a monitoring device in the target refrigeration house is controlled to acquire the image information of the heat exchanger, and the image information is fed back.
In some embodiments, verifying the execution result, and when the verification passes, issuing an instruction for ending the defrosting operation to the control terminal, including:
analyzing the image information to obtain an analysis result;
Judging whether a heat exchanger in the air cooler reaches a preset defrosting condition or not according to the analysis result;
if the heat exchanger in the air cooler reaches the preset defrosting condition, verifying and issuing an instruction for ending defrosting operation to the control terminal.
In some embodiments, after judging whether the heat exchanger in the air cooler reaches the preset defrosting ending condition according to the analysis result, the method further includes:
if the heat exchanger in the air cooler does not reach the preset defrosting condition, searching a defrosting position to be adjusted on the heat exchanger of the air cooler according to the analysis result;
and determining defrosting intervention measures according to the defrosting degree of the defrosting position to be adjusted.
In some embodiments, determining a defrosting intervention based on a degree of defrosting of a to-be-adjusted defrosting location comprises:
according to the defrosting degree of the defrosting position to be adjusted, any one or more of the installation position, defrosting power or defrosting duration of a defrosting device on a heat exchanger of the air cooler are adjusted, and a defrosting intervention instruction is generated;
and issuing a defrosting intervention instruction to the control terminal so that the control terminal adjusts defrosting operation of the heat exchanger of the air cooler according to the defrosting intervention instruction.
In some embodiments, the computing module 401 includes:
The collecting unit is configured to collect refrigerating capacity corresponding to each operation period of the air cooler in a preset operation period, 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;
the calculating unit is configured to calculate heat transfer coefficients corresponding to all operation periods of the air cooler in a preset operation period according to the refrigerating capacity, the heat exchange area, the air inlet temperature, the air outlet temperature and the air supply capacity.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic of each process, and should not constitute any limitation on the implementation process of the embodiments of the disclosure.
Fig. 5 is a schematic diagram of an electronic device 5 provided by an 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 of the various method embodiments described above are implemented by processor 501 when executing computer program 503. Alternatively, the processor 501, when executing the computer program 503, performs the functions of the modules/units in the above-described apparatus embodiments.
The electronic device 5 may be a desktop computer, a notebook computer, a palm computer, a cloud server, or the like. The electronic device 5 may include, but is not limited to, a processor 501 and a memory 502. It will be appreciated by those skilled in the art that fig. 5 is merely an example of the electronic device 5 and is not limiting of the electronic device 5 and may include more or fewer components than shown, or different components.
The processor 501 may be a central processing unit (Central Processing Unit, CPU) or other general purpose processor, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like.
The memory 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, for example, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card (Flash Card) or the like, which are provided on the electronic device 5. Memory 502 may also include both internal storage units and external storage devices of electronic device 5. The memory 502 is used to store 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-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone 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 of the above-described embodiments, or may be implemented by a computer program to instruct related hardware, and the computer program may be stored in a computer readable storage medium, where the computer program, when executed by a processor, may implement the steps of the method embodiments described above. The computer program may comprise computer program code, which may be in source code form, object code form, executable file or in some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the content of the computer readable medium can be appropriately increased or decreased according to the requirements of the jurisdiction's jurisdiction and the patent practice, for example, in some jurisdictions, the computer readable medium does not include electrical carrier signals and telecommunication signals according to the jurisdiction and the patent practice.
The above embodiments are merely for illustrating the technical solution of the present disclosure, and are not limiting thereof; 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the disclosure, and are intended to be included in the scope of the present disclosure.
Claims (6)
1. The method for controlling defrosting of the air cooler based on cloud edge coordination is characterized by comprising the following steps of:
edge server:
calculating heat transfer coefficients corresponding to all operation periods of the air cooler of the target refrigeration house in a preset operation period;
determining the frosting degree corresponding to each operation 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 period and defrosting control parameters corresponding to the defrosting execution period, and the defrosting control parameters comprise defrosting power and defrosting duration;
Issuing the defrosting control strategy to a control terminal of the target refrigeration house so that the control terminal controls the air cooler to perform defrosting operation according to the defrosting control strategy and feeds back the execution result of the defrosting operation;
the execution result is sent to a cloud platform, so that the cloud platform verifies the execution result, and when verification passes, an instruction for ending the defrosting operation is issued to the control terminal;
the execution result comprises image information;
controlling the air cooler to execute defrosting operation according to the defrosting control strategy, and feeding back the execution result of the defrosting operation, wherein the defrosting control strategy comprises the following steps:
controlling a defrosting device arranged on a heat exchanger of the air cooler to perform defrosting operation according to the defrosting power in the defrosting execution period, and recording the execution time of the defrosting operation;
when the execution time length reaches the defrosting time length, controlling a monitoring device in the target refrigeration house to acquire image information of the heat exchanger, and feeding back the image information;
verifying the execution result, and when the verification passes, issuing an instruction for ending the defrosting operation to the control terminal, wherein the instruction comprises the following components:
Analyzing the image information to obtain an analysis result;
judging whether a heat exchanger in the air cooler reaches a preset defrosting ending condition according to the analysis result;
if the heat exchanger in the air cooler reaches a preset defrosting ending condition, verifying and issuing an instruction for ending defrosting operation to the control terminal;
if the heat exchanger in the air cooler does not reach the preset defrosting condition, searching the defrosting position to be adjusted on the heat exchanger of the air cooler according to the analysis result;
determining defrosting intervention measures according to the defrosting degree of the defrosting position to be adjusted;
determining defrosting intervention measures according to the defrosting degree of the defrosting position to be adjusted, wherein the defrosting intervention measures comprise:
according to the defrosting degree of the defrosting position to be adjusted, any one or more of the installation position, defrosting power or defrosting duration of a defrosting device on a heat exchanger of the air cooler are adjusted, and a defrosting intervention instruction is generated;
and issuing a defrosting intervention instruction to the control terminal so that the control terminal adjusts defrosting operation of the heat exchanger of the air cooler according to the defrosting intervention instruction, wherein the defrosting intervention instruction comprises adjusted defrosting power and/or defrosting duration and/or an adjusted arrangement position of a defrosting device.
2. The method of claim 1, wherein determining a defrost control strategy based on the extent of frosting comprises:
determining an operation period in which the frosting degree meets a preset frosting starting condition as a frosting execution period;
determining a defrosting grade of the frosting degree corresponding to the defrosting execution period;
and calling a defrosting control parameter corresponding to the defrosting grade.
3. The method of claim 1, wherein calculating the heat transfer coefficients for each of the operational periods of the air cooler of the target refrigeration compartment within the predetermined operational period comprises:
collecting refrigerating capacity corresponding to each operation period of an air cooler in a preset operation period, wherein the heat exchange area of a heat exchanger of the air cooler is equal to the air inlet temperature of an air inlet side and the air outlet temperature of an air outlet side of the heat exchanger, and the air supply quantity of the heat exchanger;
and calculating the heat transfer coefficient corresponding to each operation period of the air cooler in a preset operation period according to the refrigerating capacity, the heat exchange area, the air inlet temperature, the air outlet temperature and the air supply capacity.
4. An edge server, comprising:
the calculating module is configured to calculate heat transfer coefficients corresponding to all operation periods of the air cooler of the target refrigeration house in a preset operation period;
The frosting determining module is configured to determine the frosting degree corresponding to each operation period according to the corresponding relation between the preset heat transfer coefficient and the frosting degree;
a policy determination module configured to determine a defrosting control policy according to the frost formation degree, the defrosting control policy including a defrosting execution period, a defrosting control parameter corresponding to the defrosting execution period, the defrosting control parameter including a defrosting power and a defrosting duration;
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 perform 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 a cloud platform so that the cloud platform verifies the execution result and sends an instruction for ending defrosting operation to the control terminal when the verification passes;
the execution result comprises image information;
controlling the air cooler to execute defrosting operation according to the defrosting control strategy, and feeding back the execution result of the defrosting operation, wherein the defrosting control strategy comprises the following steps:
controlling a defrosting device arranged on a heat exchanger of the air cooler to perform defrosting operation according to the defrosting power in the defrosting execution period, and recording the execution time of the defrosting operation;
When the execution time length reaches the defrosting time length, controlling a monitoring device in the target refrigeration house to acquire image information of the heat exchanger, and feeding back the image information;
verifying the execution result, and when the verification passes, issuing an instruction for ending the defrosting operation to the control terminal, wherein the instruction comprises the following components:
analyzing the image information to obtain an analysis result;
judging whether a heat exchanger in the air cooler reaches a preset defrosting ending condition according to the analysis result;
if the heat exchanger in the air cooler reaches a preset defrosting ending condition, verifying and issuing an instruction for ending defrosting operation to the control terminal;
if the heat exchanger in the air cooler does not reach the preset defrosting condition, searching the defrosting position to be adjusted on the heat exchanger of the air cooler according to the analysis result;
determining defrosting intervention measures according to the defrosting degree of the defrosting position to be adjusted;
determining defrosting intervention measures according to the defrosting degree of the defrosting position to be adjusted, wherein the defrosting intervention measures comprise:
according to the defrosting degree of the defrosting position to be adjusted, any one or more of the installation position, defrosting power or defrosting duration of a defrosting device on a heat exchanger of the air cooler are adjusted, and a defrosting intervention instruction is generated;
And issuing a defrosting intervention instruction to the control terminal so that the control terminal adjusts defrosting operation of the heat exchanger of the air cooler according to the defrosting intervention instruction, wherein the defrosting intervention instruction comprises adjusted defrosting power and/or defrosting duration and/or an adjusted arrangement position of a defrosting device.
5. 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 3 when the computer program is executed.
6. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the method according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210718226.XA CN115307370B (en) | 2022-06-23 | 2022-06-23 | Defrosting control method and device for air cooler based on Yun Bian coordination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210718226.XA CN115307370B (en) | 2022-06-23 | 2022-06-23 | Defrosting control method and device for air cooler based on Yun Bian coordination |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115307370A CN115307370A (en) | 2022-11-08 |
| CN115307370B true CN115307370B (en) | 2024-03-05 |
Family
ID=83854796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210718226.XA Active CN115307370B (en) | 2022-06-23 | 2022-06-23 | Defrosting control method and device for air cooler based on Yun Bian coordination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115307370B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005059454A1 (en) * | 2003-12-15 | 2005-06-30 | Arcelik Anonim Sirketi | A cooling device and a control method |
| CN107449215A (en) * | 2016-05-30 | 2017-12-08 | 上海通用制冷实业有限公司 | The method of freezer intelligent monitoring system and analysis monitoring data based on internet |
| KR20180025012A (en) * | 2016-08-31 | 2018-03-08 | 엘지전자 주식회사 | Refrigerator and method for controlling defrosting of the same |
| CN110762752A (en) * | 2019-10-16 | 2020-02-07 | 青岛海尔空调电子有限公司 | Ultrasonic defrosting and descaling device and method for controlling same |
| WO2020135589A1 (en) * | 2018-12-29 | 2020-07-02 | 广东美的制冷设备有限公司 | Air conditioning system, and reverse-cycle defrosting method and device for same |
| CN111811198A (en) * | 2020-06-03 | 2020-10-23 | 珠海格力电器股份有限公司 | Defrosting control method and device and electric equipment |
| CN113282027A (en) * | 2021-04-22 | 2021-08-20 | 苏州新亚科技有限公司 | Intelligent business control system and working method thereof |
| CN113899123A (en) * | 2021-10-29 | 2022-01-07 | 四川虹美智能科技有限公司 | Remote control defrosting method and system for intelligent refrigeration equipment |
| CN114061179A (en) * | 2021-09-28 | 2022-02-18 | 安徽康佳同创电器有限公司 | Heat exchange evaporator and refrigerator |
-
2022
- 2022-06-23 CN CN202210718226.XA patent/CN115307370B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005059454A1 (en) * | 2003-12-15 | 2005-06-30 | Arcelik Anonim Sirketi | A cooling device and a control method |
| CN107449215A (en) * | 2016-05-30 | 2017-12-08 | 上海通用制冷实业有限公司 | The method of freezer intelligent monitoring system and analysis monitoring data based on internet |
| KR20180025012A (en) * | 2016-08-31 | 2018-03-08 | 엘지전자 주식회사 | Refrigerator and method for controlling defrosting of the same |
| WO2020135589A1 (en) * | 2018-12-29 | 2020-07-02 | 广东美的制冷设备有限公司 | Air conditioning system, and reverse-cycle defrosting method and device for same |
| CN110762752A (en) * | 2019-10-16 | 2020-02-07 | 青岛海尔空调电子有限公司 | Ultrasonic defrosting and descaling device and method for controlling same |
| CN111811198A (en) * | 2020-06-03 | 2020-10-23 | 珠海格力电器股份有限公司 | Defrosting control method and device and electric equipment |
| CN113282027A (en) * | 2021-04-22 | 2021-08-20 | 苏州新亚科技有限公司 | Intelligent business control system and working method thereof |
| CN114061179A (en) * | 2021-09-28 | 2022-02-18 | 安徽康佳同创电器有限公司 | Heat exchange evaporator and refrigerator |
| CN113899123A (en) * | 2021-10-29 | 2022-01-07 | 四川虹美智能科技有限公司 | Remote control defrosting method and system for intelligent refrigeration equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115307370A (en) | 2022-11-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115307370B (en) | Defrosting control method and device for air cooler based on Yun Bian coordination | |
| CN111397132B (en) | Industrial machine room energy-saving regulation and control system and method based on big data and storage medium | |
| US11249835B2 (en) | Automatic repair of computing devices in a data center | |
| US20140150480A1 (en) | Cooling system and method | |
| CN102483274B (en) | Refrigeration management device | |
| CN115682453A (en) | Operation control method and device of water chilling unit, electronic equipment and medium | |
| CN111609665B (en) | Defrosting control method and device | |
| CN116007072A (en) | Central air conditioning system and control method thereof | |
| CN113124623B (en) | Defrosting control method and device for refrigeration equipment and condensing unit | |
| CN109506344A (en) | Control method, device and the electronic equipment of air conditioner refrigerating amount | |
| US20230171930A1 (en) | Cooling system for data center based on hyperbola cooling tower | |
| JP2012014431A (en) | Management server for cold system | |
| US20210119450A1 (en) | Energy conservation using active demand stabilization | |
| CN114413497B (en) | Double-stage compressor, control method and device, control equipment and refrigeration equipment | |
| CN101451784A (en) | Controller and control method for controller | |
| CN112857132B (en) | Cooling tower, cooling tower detection control method, device, equipment and storage medium | |
| US11698652B2 (en) | Energy conservation using active demand stabilization | |
| CN115119478A (en) | Control method, system and equipment of air conditioner | |
| CN114543276B (en) | Intelligent control method and device for air conditioning system and computer storage medium | |
| CN112730516A (en) | Method and device for monitoring temperature approximation degree of wet bulb of cooling tower in real time | |
| KR101257086B1 (en) | Remote control system for refrigerating facilities and controlling method of the same | |
| CN109357364A (en) | The service ability detection method and system of air-conditioning | |
| JP6757915B2 (en) | Information terminal control method and information system | |
| CN112050541B (en) | Refrigerating unit and defrosting control method and device | |
| CN114608230B (en) | Evaporator system control method and control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |