CN117433194A - Control method and device of refrigeration system, refrigeration system and storage medium - Google Patents
Control method and device of refrigeration system, refrigeration system and storage medium Download PDFInfo
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- CN117433194A CN117433194A CN202311762510.8A CN202311762510A CN117433194A CN 117433194 A CN117433194 A CN 117433194A CN 202311762510 A CN202311762510 A CN 202311762510A CN 117433194 A CN117433194 A CN 117433194A
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 255
- 238000000034 method Methods 0.000 title claims abstract description 76
- 230000008569 process Effects 0.000 claims abstract description 16
- 230000015654 memory Effects 0.000 claims description 37
- 230000005494 condensation Effects 0.000 abstract description 12
- 238000009833 condensation Methods 0.000 abstract description 12
- 238000001816 cooling Methods 0.000 description 15
- 230000009471 action Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- KLDZYURQCUYZBL-UHFFFAOYSA-N 2-[3-[(2-hydroxyphenyl)methylideneamino]propyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCCN=CC1=CC=CC=C1O KLDZYURQCUYZBL-UHFFFAOYSA-N 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 201000001098 delayed sleep phase syndrome Diseases 0.000 description 1
- 208000033921 delayed sleep phase type circadian rhythm sleep disease Diseases 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The application relates to a control method and device of a refrigeration system, the refrigeration system and a storage medium, wherein the method comprises the following steps: after the refrigerating system is electrified, a first self-overlapping device and a first fan in the refrigerating system are controlled to operate, the first self-overlapping device and a second self-overlapping device in the refrigerating system share a condenser, and the first fan is arranged on a first side of the condenser; acquiring the actual coil temperature of a condenser and the first actual refrigeration temperature of a refrigeration system in the operation process of a first fan of a first self-overlapping device; and controlling the second self-overlapping device according to the actual coil temperature and the first actual refrigeration temperature. The method and the device avoid frequent tripping of the compressor in the refrigeration system due to overhigh condensation temperature when the refrigeration system is started, and improve the refrigeration efficiency of the refrigeration system and the operation reliability of the refrigeration system.
Description
Technical Field
The present disclosure relates to the field of refrigeration technologies, and in particular, to a control method and apparatus for a refrigeration system, and a storage medium.
Background
Along with the development of science and technology and the improvement of life quality, the application of the low-temperature refrigeration technology in the aspects of medical treatment and health, food material storage and the like is wider. To obtain a low temperature environment, an cascade refrigeration system and a self-cascade refrigeration system are generally employed. The single-system self-cascade refrigerating system has lower refrigerating capacity and lower temperature pulling speed, and the double-system self-cascade refrigerating system can achieve faster temperature pulling. However, under the condition of higher ambient temperature, because the heat dissipation requirement is large in the temperature pulling stage, when the dual-system self-cascade refrigeration system is started, the temperature of the condenser shared by two self-cascade devices in the dual-system self-cascade refrigeration system is extremely high, and therefore, the compressor in the self-cascade device can be frequently jumped, and the refrigeration efficiency of the refrigeration system and the operation reliability of the refrigeration system can be affected.
Disclosure of Invention
The application provides a control method and device of a refrigeration system, the refrigeration system and a storage medium, and aims to solve the technical problem that the refrigeration efficiency of the refrigeration system and the operation reliability of the refrigeration system are affected when the refrigeration system with two self-overlapping devices is started in the prior art.
In a first aspect, the present application provides a control method of a refrigeration system, where the refrigeration system includes a first self-overlapping device and a second self-overlapping device, the first self-overlapping device and the second self-overlapping device share a condenser, and a first side of the condenser is provided with a first fan, and the method includes:
after the refrigerating system is electrified, controlling the first self-overlapping device and the first fan to run;
acquiring the actual coil temperature of the condenser and the first actual refrigeration temperature of the refrigeration system in the operation process of the first self-overlapping device and the first fan;
and controlling the second self-overlapping device according to the actual coil temperature and the first actual refrigeration temperature.
In an alternative embodiment, a second fan is arranged on the second side of the condenser, the first side is opposite to the second side, and the air outlet direction of the first fan is consistent with the air outlet direction of the second fan;
the method further comprises the steps of:
after the refrigerating system is electrified, controlling the second fan to run;
the obtaining the actual coil temperature of the condenser and the first actual refrigeration temperature of the refrigeration system includes:
And acquiring the actual coil temperature of the condenser and the first actual refrigeration temperature of the refrigeration system in the operation process of the first self-overlapping device, the first fan and the second fan.
In an alternative embodiment, said controlling said second self-cascade device and said first fan based on said actual coil temperature and said first actual refrigeration temperature comprises:
when the actual coil temperature is smaller than a coil temperature threshold value, controlling the second self-overlapping device to operate; or alternatively, the first and second heat exchangers may be,
and when the first actual refrigeration temperature is smaller than a first refrigeration temperature threshold value and the first actual refrigeration temperature is larger than a target refrigeration temperature, controlling the second self-cascade device to operate, wherein the target refrigeration temperature is used for representing the refrigeration temperature finally required to be reached by the refrigeration system.
In an alternative embodiment, said controlling said first self-cascade device and said first fan to operate after said refrigeration system is powered up includes:
after the refrigerating system is electrified, controlling the first self-overlapping device to be started at a first preset frequency and controlling the first fan to be started at a first preset wind speed, wherein the first preset frequency is used for representing a frequency corresponding to a low-frequency mode of a first compressor in the first self-overlapping device, and the first preset wind speed is used for representing the highest wind speed of the first fan;
After the first self-overlapping device is started and the first fan is started, controlling the first self-overlapping device to raise the frequency to a second preset frequency, so that the first self-overlapping device operates at the second preset frequency and the first fan is controlled to operate at the first preset wind speed, and the second preset frequency is used for representing the highest frequency which can be reached by the first compressor in the first self-overlapping device.
In an alternative embodiment, said controlling said second fan to operate after said refrigeration system is powered up includes:
after the refrigerating system is electrified, controlling the second fan to be started at a second preset wind speed, wherein the second preset wind speed is used for representing the highest wind speed of the second fan;
after the second fan is started, controlling the second fan to run at the second preset wind speed;
the controlling the second self-stacking device to operate includes:
controlling the second self-overlapping device to be opened at a third preset frequency, wherein the third preset frequency is used for representing a frequency corresponding to a low-frequency mode of a second compressor in the second self-overlapping device;
after the second self-overlapping device is started, controlling the second self-overlapping device to raise the frequency to a fourth preset frequency so that the second self-overlapping device runs at the fourth preset frequency, wherein the fourth preset frequency is used for representing the highest frequency which can be reached by the second compressor in the second self-overlapping device.
In an alternative embodiment, after performing the controlling step of the second self-cascade according to the actual coil temperature and the first actual refrigeration temperature, the method further comprises:
acquiring a second actual refrigeration temperature of the refrigeration system;
when the second actual refrigeration temperature reaches a target refrigeration temperature, controlling a first compressor in the first self-cascade device to stop running and controlling a second compressor in the second self-cascade device to stop running, wherein the target refrigeration temperature is used for representing the refrigeration temperature finally required to be reached by the refrigeration system;
determining the actual time length of stopping the operation of the first compressor and the second compressor;
and when the actual time length reaches a preset time length threshold value, controlling the first fan and the second fan to stop running.
In an alternative embodiment, prior to performing the controlling the first self-stacking means and the first fan operating step, the method further comprises:
after the refrigerating system is electrified, acquiring a third actual refrigerating temperature of the refrigerating system;
when the third actual refrigeration temperature is greater than a target refrigeration temperature, determining a target temperature difference between the third actual refrigeration temperature and the target refrigeration temperature, wherein the target refrigeration temperature is used for representing the refrigeration temperature finally required to be reached by the refrigeration system;
And when the target temperature difference is larger than a preset temperature difference threshold value, executing the steps of controlling the first self-overlapping device and the first fan to operate.
In a second aspect, the present application provides a control device for a refrigeration system, the refrigeration system including a first self-cascade device and a second self-cascade device, the first self-cascade device and the second self-cascade device sharing a condenser, a first side of the condenser being provided with a first fan, the device comprising:
the control module is used for controlling the first self-overlapping device and the first fan to run after the refrigerating system is electrified;
the acquisition module is used for acquiring the actual coil temperature of the condenser and the first actual refrigeration temperature of the refrigeration system in the operation process of the first self-overlapping device and the first fan;
the control module is also used for controlling the second self-overlapping device according to the actual coil temperature and the first actual refrigeration temperature.
In a third aspect, the present application provides a refrigeration system comprising: the device comprises a first self-overlapping device, a second self-overlapping device, a processor and a memory, wherein the first self-overlapping device and the second self-overlapping device share a condenser, a first fan is arranged on a first side of the condenser, the processor is connected with the first self-overlapping device, the second self-overlapping device and the first fan, and the processor is used for executing a control program of a refrigerating system stored in the memory so as to realize the control method of the refrigerating system.
In an alternative embodiment, the refrigeration system further comprises: the second fan is arranged on the second side of the condenser, the first side is opposite to the second side, and the air outlet direction of the first fan is consistent with the air outlet direction of the second fan.
In a fourth aspect, the present application also provides a storage medium storing one or more programs executable by one or more processors to implement the method of controlling a refrigeration system as described above.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the advantages that the method provided by the embodiment of the application is applied to a refrigerating system, the refrigerating system comprises a first self-overlapping device and a second self-overlapping device, the first self-overlapping device and the second self-overlapping device share one condenser, a first fan is arranged on a first side of the condenser, and the method comprises the following steps: after the refrigerating system is electrified, the first self-overlapping device and the first fan are controlled to operate; acquiring the actual coil temperature of a condenser and the first actual refrigeration temperature of a refrigeration system in the operation process of a first self-overlapping device and a first fan; and controlling the second self-overlapping device according to the actual coil temperature and the first actual refrigeration temperature. By means of the method, when the refrigerating system is started, the first self-overlapping device and the first fan are started first, so that the first fan dissipates heat to the condenser, condensing load is reduced, in the operation process of the first self-overlapping device and the first fan, the actual coil temperature of the condenser and the first actual refrigerating temperature of the refrigerating system are detected, the operation of the second self-overlapping device is controlled according to the actual coil temperature and the first actual refrigerating temperature, and on the basis of reducing the temperature of the condenser, the first self-overlapping device and the second self-overlapping device are used together to achieve rapid temperature pulling, frequent tripping of a compressor in the refrigerating system is avoided when the refrigerating system is started, and refrigerating efficiency of the refrigerating system and reliability of the operation of the refrigerating system are improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.
Fig. 1 is a flow chart of a control method of a refrigeration system according to an embodiment of the present application;
fig. 2 is a flow chart of another control method of a refrigeration system according to an embodiment of the present application;
FIG. 3 is a flow chart of a control method of a refrigeration system according to an embodiment of the present application;
Fig. 4 is a schematic structural diagram of a refrigeration system according to an embodiment of the present application;
fig. 5 is a schematic diagram of an air outlet direction of a first fan and a second fan according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of the operation of a condenser according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a control device of a refrigeration system according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of another refrigeration system according to an embodiment of the present application.
In the above figures:
100. a first throttle valve; 101. a first evaporator; 102. a first regenerator; 103. a first compressor; 104. a first intermediate heat exchanger; 105. a first gas stream separator; 106. a second throttle valve; 107. a first dry filter; 108. a first fan; 109. a condenser; 110. a third throttle valve; 111. a second evaporator; 112. a second regenerator; 113. a second compressor; 114. a second intermediate heat exchanger; 115. a second gas flow separator; 116. a fourth throttle valve; 117. a second dry filter; 118. a second fan;
a1, a refrigerant inlet of a first self-overlapping device; a2, a refrigerant outlet of the first self-overlapping device; b1, a refrigerant inlet of the second self-overlapping device; b2: a refrigerant outlet of the second self-overlapping device;
10. A control module; 20. an acquisition module;
800. a refrigeration system; 801. a processor; 802. a memory; 8021. an operating system; 8022. an application program; 803. a user interface; 804. a network interface; 805. a bus system.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.
The following disclosure provides many different embodiments, or examples, for implementing different structures of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
Referring to fig. 1, fig. 1 is a flow chart of a control method of a refrigeration system according to an embodiment of the present application. The control method of the refrigerating system provided by the embodiment of the application comprises the following steps:
s101: and after the refrigerating system is powered on, controlling the first self-overlapping device and the first fan to operate.
In this embodiment, the execution body is a processor in a refrigeration system. Referring to fig. 4, the refrigeration system has two self-cascade refrigeration apparatuses, specifically a first self-cascade apparatus and a second self-cascade apparatus, and the first self-cascade apparatus and the second self-cascade apparatus share a condenser 109, and the condenser 109 is used to implement heat exchange between the first self-cascade apparatus and the external environment and heat exchange between the second self-cascade apparatus and the external environment. In this embodiment, in order to ensure that the heat exchange amounts of the first self-overlapping device and the second self-overlapping device are the same, the condensation flow paths of the first self-overlapping device in the condenser and the condensation flow paths of the second self-overlapping device in the condenser are intersected with each other and are evenly distributed on the first side of the condenser 109 and the second side of the condenser 109, the first side is opposite to the second side, and the flow directions of the refrigerant in the two condensation flow paths can be shown with reference to fig. 6. The first side of condenser 109 is provided with first fan 108, and the air-out direction of first fan 108 is towards condenser 109, and first fan 108 is used for dispelling the heat to the condenser when the condenser work, and the air-out area of first fan 108 can cover the first side of condenser 109 completely to improve the radiating effect of condenser 109 when the cooling system operates.
Wherein referring to fig. 4, the first self-cascade apparatus includes a first evaporator 101, a first regenerator 102, a first throttle valve 100, a first intermediate heat exchanger 104, a first gas flow separator 105, a second throttle valve 106, a first compressor 103, and a first dry filter 107. The second self-cascade apparatus includes a second evaporator 111, a second regenerator 112, a third throttle valve 110, a second intermediate heat exchanger 114, a second air flow separator 115, a fourth throttle valve 116, a second compressor 113, and a second dry filter 117. The connection relationship between each component in the first self-stacking device and each component in the second self-stacking device is in the prior art, which is not described herein in detail, and specifically reference may be made to fig. 4.
Specifically, after the refrigeration system is powered on, if the first self-cascade device and the second self-cascade device are directly controlled to operate, the first compressor in the first self-cascade device and the second compressor in the second self-cascade device are very likely to jump in a temperature pulling stage, so that in order to avoid the problems, the second self-cascade device is not controlled to operate after the refrigeration system is powered on, the first self-cascade device is firstly controlled to operate and the first fan is controlled to operate, so that the first self-cascade device is operated to pull temperature, and when the first self-cascade device pulls temperature, the first fan dissipates heat to the condenser to reduce condensation load and avoid the first compressor in the first self-cascade device from jumping in the first self-cascade device.
S102: during operation of the first self-overlapping device and the first fan, an actual coil temperature of the condenser and a first actual refrigeration temperature of the refrigeration system are obtained.
In this embodiment, a first temperature sensor is disposed at the middle of the coil of the condenser, and the first temperature sensor is configured to collect an actual coil temperature of the condenser, and send the actual coil temperature to a processor in the refrigeration system, so that the processor obtains the actual coil temperature of the condenser. The first actual refrigeration temperature of the refrigeration system is actually the temperature of the refrigeration system at the time of temperature pulling. When the refrigerating system is used for drawing temperature in the box body, the first actual refrigerating temperature of the refrigerating system is actually the temperature in the box body, and particularly, a second temperature sensor can be arranged in the box body and used for collecting the first actual refrigerating temperature of the refrigerating system and sending the first actual refrigerating temperature to a processor in the refrigerating system, so that the processor can obtain the first actual refrigerating temperature of the refrigerating system.
S103: and controlling the second self-overlapping device according to the actual coil temperature and the first actual refrigeration temperature.
In this embodiment, during the operation of the first self-overlapping device and the first fan, the actual coil temperature of the condenser and the first actual refrigeration temperature of the refrigeration system are obtained in real time, and the obtained actual coil temperature and the obtained first actual refrigeration temperature are logically judged, so that the control time of the second self-overlapping device is determined according to the judgment result, and when the control time of the second self-overlapping device is obtained, the second self-overlapping device is controlled, thereby realizing rapid temperature pulling of the refrigeration system on the basis of avoiding the tripping of the compressor in the refrigeration system, and improving the refrigeration efficiency of the refrigeration system and the operation reliability of the refrigeration system.
According to the control method for the refrigerating system, when the refrigerating system is started, the first self-overlapping device and the first fan are started first, so that the first fan dissipates heat of the condenser, the condensation load is reduced, in the operation process of the first self-overlapping device and the first fan, the actual coil temperature of the condenser and the first actual refrigerating temperature of the refrigerating system are detected, the operation of the second self-overlapping device is controlled according to the actual coil temperature and the first actual refrigerating temperature, and on the basis of reducing the temperature of the condenser, the first self-overlapping device and the second self-overlapping device are used together to achieve rapid temperature pulling, frequent tripping of a compressor in the refrigerating system when the refrigerating system is started is avoided, and the refrigerating efficiency of the refrigerating system and the operation reliability of the refrigerating system are improved.
Referring to fig. 2, fig. 2 is a flow chart of a control method of another refrigeration system according to an embodiment of the present application. The control method of the refrigerating system provided by the embodiment of the application comprises the following steps:
s201: and after the refrigerating system is electrified, controlling the first self-overlapping device, the first fan and the second fan to operate.
In this embodiment, in order to further improve the heat dissipation effect of the condenser when the condenser works, referring to fig. 4, the refrigeration system provided in this embodiment further includes a second fan 118, the second fan 118 is disposed on a second side of the condenser 109, the first side of the condenser 109 is opposite to the second side, and the air outlet direction of the first fan 108 is consistent with the air outlet direction of the second fan 118, which can be specifically shown in fig. 5. When the first fan 108 dissipates heat of the condenser 109, the second fan 118 takes away heat of the condenser 109 more quickly, so as to improve the heat dissipation effect of the condenser 109.
Specifically, after the refrigeration system is electrified, in order to reduce condensation load as soon as possible, on the basis of controlling the operation of the first self-cascade device, the first fan and the second fan are also controlled to operate simultaneously, so that the condenser is cooled under the combined action of the first fan and the second fan, and the first compressor in the first self-cascade device is prevented from tripping.
In order to further ensure that the temperature of the condenser does not exceed the limit value, and prevent the first compressor in the first self-cascade device from tripping due to the excessively high discharge pressure, the step S201 controls the first self-cascade device and the first fan to operate after the refrigeration system is powered on, and specifically includes:
After the refrigerating system is electrified, the first self-overlapping device is controlled to be started at a first preset frequency and the first fan is controlled to be started at a first preset wind speed, wherein the first preset frequency is used for representing a frequency corresponding to a low-frequency mode of a first compressor in the first self-overlapping device, and the first preset wind speed is used for representing the highest wind speed of the first fan;
after the first self-overlapping device is started and the first fan is started, the first self-overlapping device is controlled to be increased in frequency to a second preset frequency, so that the first self-overlapping device operates at the second preset frequency and the first fan is controlled to operate at a first preset wind speed, and the second preset frequency is used for representing the highest frequency which can be achieved by the first compressor in the first self-overlapping device.
After the refrigeration system is electrified, the first compressor in the first self-overlapping device is controlled to be started at a lower frequency, after the first compressor is started, the first compressor can be controlled to be increased in frequency until the first compressor is increased in frequency to the highest frequency which can be achieved by the first compressor, when the first compressor is started, the first fan is controlled to be started at the highest wind speed, and after the first fan is started, the fan is continuously controlled to operate at the highest wind speed. Therefore, by controlling the first compressor to be started at a lower frequency and controlling the first fan to be started at the highest wind speed, the condensation load can be reduced, and the phenomenon that the first compressor in the first self-overlapping device jumps due to the fact that the exhaust pressure is too high is avoided. The method comprises the steps that a plurality of working modes corresponding to the first compressor and frequencies corresponding to the working modes can be preset, and when the first compressor is controlled to be started, the corresponding relation can be inquired so as to obtain a first preset frequency corresponding to the low-frequency mode. It should be noted that, the first preset frequency and the second preset frequency corresponding to the first compressor may be set according to the attribute of the first compressor, and specific values of the first preset frequency and the second preset frequency are not limited in this embodiment. The first preset wind speed corresponding to the first fan can also be set according to the attribute of the first fan, and the specific numerical value of the first preset wind speed is not limited in this embodiment.
Similarly, in order to further ensure that the temperature of the condenser does not exceed the limit value, to prevent the first compressor in the first self-cascade device from being too high to cause a trip, the step S201 controls the second fan to operate after the refrigeration system is powered on, and specifically includes:
after the refrigerating system is electrified, the second fan is controlled to be started at a second preset wind speed, and the second preset wind speed is used for representing the highest wind speed of the second fan;
and after the second fan is started, controlling the second fan to operate at a second preset wind speed.
The first fan and the second fan are controlled to be started at the highest wind speed, and after the first fan and the second fan are started, the first fan and the second fan are controlled to run at the highest wind speed, so that the heat dissipation effect of the condenser is further improved, and the phenomenon that the first compressor in the first self-overlapping device jumps due to overhigh exhaust pressure is avoided.
In this embodiment, before the step of controlling the first self-overlapping device, the first fan, and the second fan, the step of S201 further includes:
after the refrigerating system is electrified, obtaining a third actual refrigerating temperature of the refrigerating system;
when the third actual refrigeration temperature is greater than the target refrigeration temperature, determining a target temperature difference between the third actual refrigeration temperature and the target refrigeration temperature, wherein the target refrigeration temperature is used for representing the refrigeration temperature finally required to be reached by the refrigeration system;
And when the target temperature difference is greater than a preset temperature difference threshold value, executing the steps of controlling the first self-overlapping device and the first fan to operate.
The method for obtaining the third actual cooling temperature is consistent with the method for obtaining the first actual cooling temperature, and the method for obtaining the first actual cooling temperature may be specifically referred to, which is not described herein in detail in this embodiment. The target temperature difference is equal to the difference of the third actual cooling temperature minus the target cooling temperature. When the target temperature difference is larger than the preset temperature difference threshold, the target refrigeration temperature is characterized as being reached, and the refrigeration system still has a larger refrigeration requirement at the moment, so the method provided by the embodiment is executed, the temperature of the condenser can be reduced in the starting stage of the refrigeration system, and the condensation load is reduced. And when the target temperature difference is smaller than or equal to the preset temperature difference threshold, the target refrigeration temperature is represented as being reached, at this time, the refrigeration requirement of the refrigeration system is smaller, at this time, the refrigeration system has reached a stable operation stage, the method provided by the embodiment is not required to be executed, and only the first self-overlapping device and the first fan and the second self-overlapping device and the second fan are required to be controlled to operate alternately, namely, the second self-overlapping device and the second fan are not operated during the operation of the first self-overlapping device and the first fan, and the first self-overlapping device and the first fan are not operated during the operation of the second self-overlapping device and the second fan.
S202: and in the operation process of the first self-overlapping device, the first fan and the second fan, acquiring the actual coil temperature of the condenser and the first actual refrigeration temperature of the refrigeration system.
In this embodiment, the step S202 is identical to the step S102 described above, and details thereof are not described herein, and reference is made to the above description.
S203: and when the actual coil temperature is less than the coil temperature threshold, controlling the second self-overlapping device to operate.
In this embodiment, after the actual coil temperature is obtained, the actual coil temperature may be compared with the coil temperature threshold, and when the actual coil temperature is greater than or equal to the coil temperature threshold, the current temperature-pulling load is characterized as higher, if the second self-overlapping device is turned on, the first compressor in the first self-overlapping device and the second compressor in the second self-overlapping device may be further caused to jump, so in order to avoid the above problem, under the combined action of the first self-overlapping device, the first fan and the second fan, so that the actual coil temperature is less than the coil temperature threshold, the second self-overlapping device is controlled to operate at this time. When the actual coil temperature is smaller than the coil temperature threshold, the current temperature pulling load is lower, and even if the second self-overlapping device is started again, the condenser releases a large amount of heat, and under the action of the first fan and the second fan, the condensation load can be further reduced, so that the phenomenon that the first compressor in the first self-overlapping device and the second compressor in the second self-overlapping device jump due to overhigh exhaust pressure is avoided. It should be noted that, the coil temperature threshold may be set according to actual needs, and specific values of the coil temperature threshold are not limited in this embodiment.
S204: and when the first actual refrigeration temperature is smaller than the first refrigeration temperature threshold value and the actual refrigeration temperature is larger than the target refrigeration temperature, controlling the second self-overlapping device to operate, wherein the target refrigeration temperature is used for representing the refrigeration temperature finally required to be reached by the refrigeration system.
In this embodiment, after the first actual cooling temperature is obtained, the first actual cooling temperature may be compared with the first cooling temperature threshold and the target cooling temperature. When the first actual refrigeration temperature is greater than or equal to the first refrigeration temperature threshold, the current temperature-pulling load is higher, if the second self-cascade device is started again, the first compressor in the first self-cascade device and the second compressor in the second self-cascade device can jump, so that the second self-cascade device is controlled to operate only when the first actual refrigeration temperature is smaller than the first refrigeration temperature threshold and the actual refrigeration temperature is greater than the target refrigeration temperature under the combined action of the first self-cascade device, the first fan and the second fan in order to avoid the problems. When the first actual refrigerating temperature is smaller than the first refrigerating temperature threshold value and the actual refrigerating temperature is larger than the target refrigerating temperature, the current temperature pulling load is lower, and even if the second self-overlapping device is started again, the condenser releases a large amount of heat, the condensing load can be further reduced under the action of the first fan and the second fan, and the phenomenon that the first compressor in the first self-overlapping device and the second compressor in the second self-overlapping device jump machine due to overhigh exhaust pressure is avoided. It should be noted that, the first refrigeration temperature threshold may be set according to actual needs, and in this embodiment, a specific value of the first refrigeration temperature threshold is not limited. The target refrigeration temperature can be set by the user, that is, the refrigeration temperature reached by the box body can be finally reached by the refrigeration system required by the user, the user can set the target refrigeration temperature in various modes, and the method is not particularly limited in the embodiment. When neither of the steps S203 and S204 is satisfied, the step S202 may be executed back.
For the above steps S203 and S204, the controlling operation of the second self-overlapping device in the steps S203 and S204 specifically includes:
controlling the second self-overlapping device to be started at a third preset frequency, wherein the third preset frequency is used for representing a frequency corresponding to a low-frequency mode of a second compressor in the second self-overlapping device;
after the second self-overlapping device is started, controlling the second self-overlapping device to raise the frequency to a fourth preset frequency so that the second self-overlapping device operates at the fourth preset frequency, wherein the fourth preset frequency is used for representing the highest frequency which can be reached by the second compressor in the second self-overlapping device.
In this embodiment, when the control timing of the second self-overlapping device is determined according to the actual coil temperature and the first actual cooling temperature, the second compressor in the second self-overlapping device is controlled to be turned on at a lower frequency, after the second compressor is turned on, the second compressor is controlled to be increased in frequency until the second compressor is increased in frequency to the highest frequency that can be achieved by the second compressor, and when the second compressor is operated, the first fan is continuously controlled to operate at the highest rotation speed and the second fan is continuously controlled to operate at the highest rotation speed. Therefore, by controlling the second compressor to be started at a lower frequency and controlling the first fan and the second fan to continue to operate at the highest rotating speed, the condensation load can be reduced, the rapid temperature pulling of the refrigerating system is realized under the combined action of the first self-overlapping device and the second self-overlapping device, the phenomenon that the first compressor in the first self-overlapping device jumps due to overhigh exhaust pressure and the second compressor in the second self-overlapping device jumps due to overhigh exhaust pressure is prevented, and the refrigerating efficiency of the refrigerating system and the refrigerating efficiency of the first compressor and the second compressor are improved. The plurality of working modes corresponding to the second compressor and the frequencies corresponding to the working modes can be preset, and when the second compressor is controlled to be started, the corresponding relation can be inquired so as to obtain a first preset frequency corresponding to the low-frequency mode from the inquiry. It should be noted that, the third preset frequency and the fourth preset frequency corresponding to the second compressor may be set according to the attribute of the second compressor, and specific values of the third preset frequency and the fourth preset frequency are not limited in this embodiment.
The control method of the refrigeration system provided in this embodiment further includes the following steps after executing the control step for the second self-overlapping device:
acquiring a second actual refrigeration temperature of the refrigeration system;
when the second actual refrigeration temperature reaches the target refrigeration temperature, controlling the first compressor in the first self-cascade device to stop running and controlling the second compressor in the second self-cascade device to stop running, wherein the target refrigeration temperature is used for representing the refrigeration temperature finally required to be reached by the refrigeration system;
determining the actual time length for stopping the operation of the first compressor and the second compressor;
and when the actual time length reaches a preset time length threshold value, controlling the first fan and the second fan to stop running.
In this embodiment, the second actual cooling temperature is the same as the first actual cooling temperature, and reference may be made specifically to the above-mentioned first actual cooling temperature acquiring manner, which is not described herein in detail. When the second actual refrigeration temperature reaches the target refrigeration temperature, the refrigeration temperature in the current box body is characterized to be capable of meeting the requirements of users, so that the first compressor in the first self-overlapping device is controlled to stop running and the second compressor in the second self-overlapping device is controlled to stop running. Immediately after the first compressor is stopped and the second compressor is stopped, the first fan and the second fan are controlled to stop, and the temperature of the condenser may be higher. Therefore, in view of the above, after the first compressor and the second compressor are stopped, the actual time length for stopping the first compressor and the second compressor is counted, and when the actual time length reaches the preset time length threshold value, the fact that the heat of the condenser is basically taken away through the action of the first fan and the second fan is characterized, and the first fan and the second fan are controlled to stop running. When the first fan and the second fan stop running, and the target temperature difference between the third actual refrigeration temperature and the target refrigeration temperature is smaller than or equal to a preset temperature difference threshold value, the refrigeration system is characterized to enter a stable running stage, and the first self-overlapping device and the first fan as well as the second self-overlapping device and the second fan are controlled to run alternately in the stable running stage.
According to the control method for the refrigerating system, when the refrigerating system is started, the first self-overlapping device and the first fan are started first, so that the first fan dissipates heat of the condenser, the condensation load is reduced, in the operation process of the first self-overlapping device and the first fan, the actual coil temperature of the condenser and the first actual refrigerating temperature of the refrigerating system are detected, the operation of the second self-overlapping device is controlled according to the actual coil temperature and the first actual refrigerating temperature, and on the basis of reducing the temperature of the condenser, the first self-overlapping device and the second self-overlapping device are used together to achieve rapid temperature pulling, frequent tripping of a compressor in the refrigerating system when the refrigerating system is started is avoided, and the refrigerating efficiency of the refrigerating system and the operation reliability of the refrigerating system are improved.
The operation of the refrigeration system is described in detail below, as an example, with reference to fig. 3, and is as follows:
the refrigeration equipment is electrified, the first self-overlapping device is started to draw temperature first, and the first self-overlapping device is started at a first preset frequency. At the moment, the heat dissipation temperature of the condenser is high, the first fan and the second fan are simultaneously started at the respective highest wind speeds, the first fan and the second fan are controlled to simultaneously operate at the respective highest wind speeds, so that the air flow at the side of the condenser is quickened, the heat exchange of the condenser is enhanced, the temperature of the condenser is ensured not to exceed the limit value, the phenomenon that the machine is jumped due to the fact that the exhaust pressure of the compressor is too high is avoided, and then the first compressor in the first self-overlapping device slowly rises to operate at the second preset frequency. When the actual coil temperature of the condenser is smaller than a coil temperature threshold value or the first actual refrigerating temperature of the refrigerating system is smaller than a first refrigerating temperature threshold value, the second self-cascade device is controlled to be started at a third preset frequency, at the moment, the first fan and the second fan are maintained to continuously operate at the highest wind speed, the phenomenon that the compressor is jumped due to the fact that the exhaust pressure of the compressor is too high is avoided, and then the second compressor in the second self-cascade device slowly rises to operate at a fourth preset frequency. When the target refrigeration temperature is reached, the first compressor and the second compressor stop running, the first fan and the second fan are controlled to stop running when the actual time length of the stop running of the first compressor and the second compressor reaches a preset time length threshold value, and the first self-overlapping device and the first fan and the second self-overlapping device and the second fan are controlled to run alternately when the first fan and the second fan stop running.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a control device of a refrigeration system according to an embodiment of the present application. The embodiment of the application provides a refrigerating system's controlling means, including control module 10 and acquisition module 20, refrigerating system include first from the cascade device with the second is from the cascade device, first from the cascade device with the second is from the cascade device sharing a condenser, the first side of condenser is provided with first fan. The control module 10 is used for controlling the first self-overlapping device and the first fan to operate after the refrigerating system is powered on; an acquisition module 20, configured to acquire an actual coil temperature of the condenser and a first actual refrigeration temperature of the refrigeration system during operation of the first self-overlapping device and the first fan; the control module 10 is further configured to control the second self-stacking device according to the actual coil temperature and the first actual cooling temperature.
In this embodiment, a second fan is disposed on a second side of the condenser, the first side is opposite to the second side, and an air outlet direction of the first fan is consistent with an air outlet direction of the second fan.
In the present embodiment, the control module 10 is further configured to:
and after the refrigerating system is electrified, controlling the second fan to run.
In this embodiment, the obtaining module 20 is further configured to:
and acquiring the actual coil temperature of the condenser and the first actual refrigeration temperature of the refrigeration system in the operation process of the first self-overlapping device, the first fan and the second fan.
In the present embodiment, the control module 10 is further configured to:
when the actual coil temperature is smaller than a coil temperature threshold value, controlling the second self-overlapping device to operate; or alternatively, the first and second heat exchangers may be,
and when the first actual refrigeration temperature is smaller than a first refrigeration temperature threshold value and the first actual refrigeration temperature is larger than a target refrigeration temperature, controlling the second self-cascade device to operate, wherein the target refrigeration temperature is used for representing the refrigeration temperature finally required to be reached by the refrigeration system.
In the present embodiment, the control module 10 is further configured to:
after the refrigerating system is electrified, controlling the first self-overlapping device to be started at a first preset frequency and controlling the first fan to be started at a first preset wind speed, wherein the first preset frequency is used for representing a frequency corresponding to a low-frequency mode of a first compressor in the first self-overlapping device, and the first preset wind speed is used for representing the highest wind speed of the first fan;
After the first self-overlapping device is started and the first fan is started, controlling the first self-overlapping device to raise the frequency to a second preset frequency, so that the first self-overlapping device operates at the second preset frequency and the first fan is controlled to operate at the first preset wind speed, and the second preset frequency is used for representing the highest frequency which can be reached by the first compressor in the first self-overlapping device.
In the present embodiment, the control module 10 is further configured to:
after the refrigerating system is electrified, controlling the second fan to be started at a second preset wind speed, wherein the second preset wind speed is used for representing the highest wind speed of the second fan;
after the second fan is started, controlling the second fan to run at the second preset wind speed;
controlling the second self-stacking device to operate, comprising:
controlling the second self-overlapping device to be opened at a third preset frequency, wherein the third preset frequency is used for representing a frequency corresponding to a low-frequency mode of a second compressor in the second self-overlapping device;
after the second self-overlapping device is started, controlling the second self-overlapping device to raise the frequency to a fourth preset frequency so that the second self-overlapping device runs at the fourth preset frequency, wherein the fourth preset frequency is used for representing the highest frequency which can be reached by the second compressor in the second self-overlapping device.
In the present embodiment, the control module 10 is further configured to:
after the second self-cascade is controlled according to the actual coil temperature and the first actual refrigeration temperature, obtaining a second actual refrigeration temperature of the refrigeration system;
when the second actual refrigeration temperature reaches a target refrigeration temperature, controlling a first compressor in the first self-cascade device to stop running and controlling a second compressor in the second self-cascade device to stop running, wherein the target refrigeration temperature is used for representing the refrigeration temperature finally required to be reached by the refrigeration system;
determining the actual time length of stopping the operation of the first compressor and the second compressor;
and when the actual time length reaches a preset time length threshold value, controlling the first fan and the second fan to stop running.
In the present embodiment, the control module 10 is further configured to:
after the refrigerating system is electrified, acquiring a third actual refrigerating temperature of the refrigerating system;
when the third actual refrigeration temperature is greater than a target refrigeration temperature, determining a target temperature difference between the third actual refrigeration temperature and the target refrigeration temperature, wherein the target refrigeration temperature is used for representing the refrigeration temperature finally required to be reached by the refrigeration system;
And when the target temperature difference is larger than a preset temperature difference threshold value, controlling the first self-overlapping device and the first fan to operate.
According to the control device of the refrigerating system, when the refrigerating system is started, the first self-cascade device and the first fan are started firstly, so that the first fan dissipates heat to the condenser, the temperature pulling load of the first self-cascade device is reduced, in the operation process of the first self-cascade device and the first fan, the actual coil temperature of the condenser and the first actual refrigerating temperature of the refrigerating system are detected, the operation of the second self-cascade device is controlled according to the actual coil temperature and the first actual refrigerating temperature, the first self-cascade device and the second self-cascade device are used together to achieve rapid temperature pulling on the basis of reducing the temperature of the condenser, frequent tripping of a compressor in the refrigerating system is avoided when the refrigerating system is started, and the refrigerating efficiency of the refrigerating system and the operation reliability of the refrigerating system are improved.
Fig. 8 is a schematic structural diagram of another refrigeration system according to an embodiment of the present invention, and the refrigeration system 800 shown in fig. 8 includes: at least one processor 801, memory 802, at least one network interface 804, and other user interfaces 803. The various components in the refrigeration system 800 are coupled together by a bus system 805. It is appreciated that the bus system 805 is used to enable connected communications between these components. The bus system 805 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration, the various buses are labeled as bus system 805 in fig. 8.
The user interface 803 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, a trackball, a touch pad, or a touch screen, etc.).
It will be appreciated that the memory 802 in embodiments of the invention can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and Direct memory bus RAM (DRRAM). The memory 802 described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
In some implementations, the memory 802 stores the following elements, executable units or data structures, or a subset thereof, or an extended set thereof: an operating system 8021 and application programs 8022.
The operating system 8021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 8022 includes various application programs such as a Media Player (Media Player), a Browser (Browser), and the like for realizing various application services. The program for implementing the method of the embodiment of the present invention may be contained in the application program 8022.
In the embodiment of the present invention, by calling a program or an instruction stored in the memory 802, specifically, a program or an instruction stored in the application program 8022, the processor 801 is configured to perform method steps provided by each method embodiment, for example, including: after the refrigerating system is electrified, the first self-overlapping device and the first fan are controlled to operate; acquiring the actual coil temperature of a condenser and the first actual refrigeration temperature of a refrigeration system in the operation process of a first self-overlapping device and a first fan; and controlling the second self-overlapping device according to the actual coil temperature and the first actual refrigeration temperature.
The method disclosed in the above embodiment of the present invention may be applied to the processor 801 or implemented by the processor 801. The processor 801 may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuitry in hardware in the processor 801 or by instructions in software. The processor 801 described above may be a general purpose processor, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software elements in a decoding processor. The software elements may be located in a random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory 802, and the processor 801 reads information in the memory 802 and, in combination with its hardware, performs the steps of the above method.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For a hardware implementation, the processing units may be implemented within one or more application specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processors (Digital Signal Processing, DSP), digital signal processing devices (dspev, DSPD), programmable logic devices (Programmable Logic Device, PLD), field programmable gate arrays (Field-Programmable Gate Array, FPGA), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units designed to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described herein may be implemented by means of units that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
The refrigeration system provided in this embodiment may be a refrigeration system as shown in fig. 8, and may perform all steps of the control method of the refrigeration system as shown in fig. 1-3, so as to achieve the technical effects of the control method of the refrigeration system as shown in fig. 1-3, and the description is specifically referred to in fig. 1-3, and is omitted herein for brevity.
The embodiment of the invention also provides a storage medium (computer readable storage medium). The storage medium here stores one or more programs. Wherein the storage medium may comprise volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, hard disk, or solid state disk; the memory may also comprise a combination of the above types of memories.
When one or more programs in the storage medium are executable by one or more processors, the control method of the refrigeration system executed on the control device side of the refrigeration system is implemented.
The processor is configured to execute a control program of the refrigeration system stored in the memory, so as to implement the following steps of a control method of the refrigeration system executed on a control device side of the refrigeration system: after the refrigerating system is electrified, the first self-overlapping device and the first fan are controlled to operate; acquiring the actual coil temperature of a condenser and the first actual refrigeration temperature of a refrigeration system in the operation process of a first self-overlapping device and a first fan; and controlling the second self-overlapping device according to the actual coil temperature and the first actual refrigeration temperature.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of function in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. A method of controlling a refrigeration system, the refrigeration system including a first self-cascade device and a second self-cascade device, the first and second self-cascade devices sharing a condenser, a first side of the condenser being provided with a first fan, the method comprising:
after the refrigerating system is electrified, controlling the first self-overlapping device and the first fan to run;
acquiring the actual coil temperature of the condenser and the first actual refrigeration temperature of the refrigeration system in the operation process of the first self-overlapping device and the first fan;
controlling the second self-overlapping device according to the actual coil temperature and the first actual refrigeration temperature, comprising:
when the actual coil temperature is smaller than a coil temperature threshold value, controlling the second self-overlapping device to operate; or alternatively, the first and second heat exchangers may be,
and when the first actual refrigeration temperature is smaller than a first refrigeration temperature threshold value and the first actual refrigeration temperature is larger than a target refrigeration temperature, controlling the second self-cascade device to operate, wherein the target refrigeration temperature is used for representing the refrigeration temperature finally required to be reached by the refrigeration system.
2. The method of claim 1, wherein a second side of the condenser is provided with a second fan, the first side being opposite the second side, an air outlet direction of the first fan being coincident with an air outlet direction of the second fan;
the method further comprises the steps of:
after the refrigerating system is electrified, controlling the second fan to run;
the obtaining the actual coil temperature of the condenser and the first actual refrigeration temperature of the refrigeration system includes:
and acquiring the actual coil temperature of the condenser and the first actual refrigeration temperature of the refrigeration system in the operation process of the first self-overlapping device, the first fan and the second fan.
3. The method of claim 1, wherein said controlling the operation of the first self-cascade device and the first fan after the powering up of the refrigeration system comprises:
after the refrigerating system is electrified, controlling the first self-overlapping device to be started at a first preset frequency and controlling the first fan to be started at a first preset wind speed, wherein the first preset frequency is used for representing a frequency corresponding to a low-frequency mode of a first compressor in the first self-overlapping device, and the first preset wind speed is used for representing the highest wind speed of the first fan;
After the first self-overlapping device is started and the first fan is started, controlling the first self-overlapping device to raise the frequency to a second preset frequency, so that the first self-overlapping device operates at the second preset frequency and the first fan is controlled to operate at the first preset wind speed, and the second preset frequency is used for representing the highest frequency which can be reached by the first compressor in the first self-overlapping device.
4. The method of claim 2, wherein said controlling the operation of the second fan after the power-up of the refrigeration system comprises:
after the refrigerating system is electrified, controlling the second fan to be started at a second preset wind speed, wherein the second preset wind speed is used for representing the highest wind speed of the second fan;
after the second fan is started, controlling the second fan to run at the second preset wind speed;
the controlling the second self-stacking device to operate includes:
controlling the second self-overlapping device to be opened at a third preset frequency, wherein the third preset frequency is used for representing a frequency corresponding to a low-frequency mode of a second compressor in the second self-overlapping device;
after the second self-overlapping device is started, controlling the second self-overlapping device to raise the frequency to a fourth preset frequency so that the second self-overlapping device runs at the fourth preset frequency, wherein the fourth preset frequency is used for representing the highest frequency which can be reached by the second compressor in the second self-overlapping device.
5. The method of claim 2, wherein after performing the step of controlling the second self-cascade in accordance with the actual coil temperature and the first actual refrigeration temperature, the method further comprises:
acquiring a second actual refrigeration temperature of the refrigeration system;
when the second actual refrigeration temperature reaches a target refrigeration temperature, controlling a first compressor in the first self-cascade device to stop running and controlling a second compressor in the second self-cascade device to stop running, wherein the target refrigeration temperature is used for representing the refrigeration temperature finally required to be reached by the refrigeration system;
determining the actual time length of stopping the operation of the first compressor and the second compressor;
and when the actual time length reaches a preset time length threshold value, controlling the first fan and the second fan to stop running.
6. The method of claim 1, wherein prior to performing the controlling the first self-stacking device and the first fan operating step, the method further comprises:
after the refrigerating system is electrified, acquiring a third actual refrigerating temperature of the refrigerating system;
when the third actual refrigeration temperature is greater than a target refrigeration temperature, determining a target temperature difference between the third actual refrigeration temperature and the target refrigeration temperature, wherein the target refrigeration temperature is used for representing the refrigeration temperature finally required to be reached by the refrigeration system;
And when the target temperature difference is larger than a preset temperature difference threshold value, executing the steps of controlling the first self-overlapping device and the first fan to operate.
7. A control device for a refrigeration system, the refrigeration system comprising a first self-cascade device and a second self-cascade device, the first self-cascade device and the second self-cascade device sharing a condenser, a first side of the condenser being provided with a first fan, the device comprising:
the control module is used for controlling the first self-overlapping device and the first fan to run after the refrigerating system is electrified;
the acquisition module is used for acquiring the actual coil temperature of the condenser and the first actual refrigeration temperature of the refrigeration system in the operation process of the first self-overlapping device and the first fan;
the control module is also used for controlling the second self-overlapping device according to the actual coil temperature and the first actual refrigeration temperature;
the control module is further used for controlling the second self-overlapping device to operate when the actual coil temperature is smaller than a coil temperature threshold value; or alternatively, the first and second heat exchangers may be,
and when the first actual refrigeration temperature is smaller than a first refrigeration temperature threshold value and the first actual refrigeration temperature is larger than a target refrigeration temperature, controlling the second self-cascade device to operate, wherein the target refrigeration temperature is used for representing the refrigeration temperature finally required to be reached by the refrigeration system.
8. A refrigeration system, comprising: the refrigerating system comprises a first self-overlapping device, a second self-overlapping device, a processor and a memory, wherein the first self-overlapping device and the second self-overlapping device share a condenser, a first fan is arranged on a first side of the condenser, the processor is connected with the first self-overlapping device, the second self-overlapping device and the first fan, and the processor is used for executing a control program of the refrigerating system stored in the memory so as to realize the control method of the refrigerating system according to any one of claims 1-6.
9. The system of claim 8, wherein the refrigeration system further comprises: the second fan is arranged on the second side of the condenser, the first side is opposite to the second side, and the air outlet direction of the first fan is consistent with the air outlet direction of the second fan.
10. A storage medium storing one or more programs executable by one or more processors to implement the method of controlling a refrigeration system according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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