CN115988822A - Control method of refrigeration system, refrigeration system and storage medium - Google Patents
Control method of refrigeration system, refrigeration system and storage medium Download PDFInfo
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- CN115988822A CN115988822A CN202111201089.4A CN202111201089A CN115988822A CN 115988822 A CN115988822 A CN 115988822A CN 202111201089 A CN202111201089 A CN 202111201089A CN 115988822 A CN115988822 A CN 115988822A
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Abstract
The invention discloses a control method of a refrigeration system, the refrigeration system and a storage medium, wherein the refrigeration system comprises an outdoor unit and an indoor unit, the indoor unit is arranged in a cabinet to dissipate heat of equipment arranged in the cabinet, and the control method comprises the following steps: acquiring outdoor meteorological parameters of the refrigeration system, the environment temperature in the cabinet of the cabinet and the total power consumption of the equipment; determining target operating parameters of the refrigeration system according to the outdoor meteorological parameters, the ambient temperature in the cabinet and the total power consumption of the equipment; and controlling the refrigeration system to operate according to the target operation parameters. Therefore, the invention can not only avoid frequent adjustment of the compressor, but also enable the refrigeration system to accurately adjust the temperature in the cabinet, avoid supercooling or overheating of the temperature in the cabinet and improve the heat dissipation effect of equipment in the cabinet.
Description
Technical Field
The present invention relates to the field of refrigeration technologies, and in particular, to a control method for a refrigeration system, and a storage medium.
Background
With the development of 5G networks, data traffic transmitted by wireless Communication and data traffic processed by servers tend to increase dramatically, and power consumption of ICT (Information and Communication Technology) devices also increases, and the heating value thereof also increases accordingly. Currently, refrigeration systems are used to dissipate heat from ICT equipment.
The amount of heat dissipated by ICT equipment is not fixed and therefore, it is necessary to adjust the operating parameters of the refrigeration system to operate the ICT equipment in a constant temperature environment. Generally, the refrigeration system gradually adjusts the operation parameters according to the indoor temperature value of the ICT equipment, and this way may cause the environment of the ICT equipment to be too cold or too hot, thereby affecting the heat dissipation effect of the ICT equipment.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a control method of a refrigeration system, the refrigeration system and a storage medium, aiming at achieving a more accurate regulation effect of the refrigeration system, avoiding the situation of supercooling or overheating of the environment where ICT equipment is located and improving the heat dissipation effect of the ICT equipment.
In order to achieve the above object, the present invention provides a control method of a refrigeration system, where the refrigeration system includes an outdoor unit and an indoor unit, the indoor unit is installed in a cabinet to dissipate heat of equipment disposed in the cabinet, and the control method of the refrigeration system includes the following steps:
acquiring outdoor meteorological parameters of the refrigeration system, the environment temperature in the cabinet of the cabinet and the total power consumption of the equipment, wherein the outdoor meteorological parameters comprise at least one of outdoor air dry bulb temperature and outdoor air wet bulb temperature;
determining target operating parameters of the refrigeration system according to the outdoor meteorological parameters, the ambient temperature in the cabinet and the total power consumption of the equipment;
and controlling the refrigeration system to operate according to the target operation parameters.
Optionally, the step of determining the target operating parameter of the refrigeration system according to the outdoor meteorological parameter, the in-cabinet ambient temperature, and the total power consumption of the equipment includes:
determining a target refrigerating capacity of the refrigerating system according to the total power consumption of the equipment, wherein the absolute value of the difference value between the target refrigerating capacity and the total power consumption is smaller than or equal to a first preset value;
and determining target operation parameters of the refrigerating system according to the target refrigerating capacity, the outdoor meteorological parameters and the environment temperature in the cabinet.
Optionally, the step of determining a target operation parameter of the refrigeration system according to the target refrigeration capacity, the outdoor meteorological parameter and the ambient temperature inside the cabinet includes:
determining at least one group of operation parameters which enable the refrigeration system to reach the target refrigeration amount according to the mapping relation among the outdoor meteorological parameters, the environment temperature in the cabinet and the operation parameters of the refrigeration system;
acquiring a target operation parameter group with minimum operation energy consumption from all operation parameter groups;
and determining the operation parameters in the target operation parameter group as the target operation parameters of the refrigeration system.
Optionally, the indoor unit includes at least two indoor fans, each of the indoor fans supplies air to at least one of the devices, the indoor unit is provided with at least one air return opening corresponding to each of the indoor fans, and after the step of controlling the refrigeration system to operate according to the target operating parameter, the method further includes:
acquiring a first temperature difference value between the return air temperature of the return air inlet corresponding to each indoor fan and the air supply temperature of the indoor fan;
and turning off the target indoor fan of which the absolute value of the first temperature difference is smaller than or equal to a second preset value.
Optionally, the indoor unit includes at least two indoor fans, and each indoor fan supplies air to at least one of the devices correspondingly; after the step of controlling the refrigeration system to operate according to the target operating parameter, the method further includes:
acquiring the air outlet temperature of one side of each device, which is far away from the indoor fan;
determining a second temperature difference value between each air outlet temperature and the target air outlet temperature;
and adjusting the rotating speed of the corresponding indoor fan according to each second temperature difference value.
Optionally, the step of adjusting the rotation speed of the corresponding indoor fan according to each second temperature difference includes:
reducing the rotating speed of the target indoor fan of which the second temperature difference value is less than or equal to a third preset value;
and increasing the rotating speed of the target indoor fan with the second temperature difference value larger than a third preset value.
Optionally, after the step of adjusting the rotation speed of the corresponding indoor fan according to each difference, the method further includes:
acquiring the average value of the return air temperature of the return air inlet corresponding to each indoor fan;
updating the ambient temperature in the cabinet by using the average value;
and returning to the step of determining the target operation parameters of the refrigeration system according to the outdoor meteorological parameters, the environment temperature in the cabinet and the total power consumption of the equipment.
The present invention also provides a refrigeration system comprising:
an outdoor unit including a compressor and an outdoor heat exchanger;
the indoor unit is used for being installed in the cabinet and comprises an indoor heat exchanger, and the compressor, the outdoor heat exchanger and the indoor heat exchanger are communicated to form a refrigeration cycle system so as to dissipate heat of equipment arranged in the cabinet;
the control device is used for acquiring target operation parameters of the refrigerating system according to outdoor meteorological parameters of the refrigerating system, the environment temperature in the cabinet and the total power consumption of the equipment, and controlling the refrigerating system to operate according to the target operation parameters.
The present invention also provides a refrigeration system comprising: a memory, a processor, and a refrigeration system control program stored on the memory and executable on the processor, the refrigeration system control program when executed by the processor implementing the steps of the control method of the refrigeration system as described above.
The present invention also provides a storage medium having a refrigeration system control program stored thereon, which when executed by a processor, implements the steps of the control method of a refrigeration system as described above.
According to the control method of the refrigeration system, the refrigeration system and the storage medium provided by the embodiment of the invention, the target operation parameter of the refrigeration system is determined according to the outdoor meteorological parameter of the refrigeration system, the ambient temperature in the cabinet of the refrigeration system and the total power consumption of equipment in the cabinet; and then directly controlling the refrigeration system to operate according to the target operation parameters. So, refrigerating system directly operates with definite target operating parameter, need not constantly to adjust operating parameter through return air temperature, not only can avoid the frequent adjustment of compressor, can also make the temperature in the accurate adjustment rack of refrigerating system, avoids the temperature supercooling or overheated in the rack, improves the radiating effect of equipment in the rack.
Drawings
Fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a first embodiment of a method for controlling a refrigeration system according to the present invention;
FIG. 3 is a schematic view of a use scenario of the refrigeration system provided by the present invention;
fig. 4 is a schematic view of an indoor unit of a refrigeration system according to the present invention;
FIG. 5 is a schematic flow chart diagram of a second embodiment of a method for controlling a refrigeration system according to the present invention;
FIG. 6 is a schematic flow chart illustrating a method of controlling a refrigeration system according to a third embodiment of the present invention;
fig. 7 is a schematic flow chart illustrating a fourth embodiment of a method for controlling a refrigeration system according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | Cabinet |
2 | |
| 3 | |
13 | |
| 6 | |
5 | |
| 7 | |
4 | |
| 8 | |
10 | Air |
| 9 | |
11 | Return |
| 12 | Air outlet temperature sensor |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
With the development of 5G networks, data traffic transmitted by wireless Communication and data traffic processed by servers tend to increase dramatically, and power consumption of ICT (Information and Communication Technology) devices also increases, and the heating value thereof also increases accordingly. Currently, refrigeration systems are used to dissipate heat from ICT equipment.
In some exemplary technologies, a refrigeration system and ICT equipment are integrated in a cabinet, so that closed cooling and temperature reduction in the cabinet are realized, and loss of cooling capacity is reduced; the air supply paths of the tail end equipment and the ICT equipment of the refrigeration system can be shortened, cold air can be directly fed into the ICT equipment, and the overheating problem is effectively relieved. Meanwhile, as the cold energy is fully utilized in the cabinet, the utilization rate of the cold energy is improved, and a good energy-saving effect can be achieved.
However, the control mode of the refrigeration system still continues to use the traditional control mode, the start, stop and operation frequency control of the compressor are still controlled according to the return air temperature, the equipment in the cabinet can be overcooled and overheated, the accurate refrigeration and the extreme energy saving are difficult to achieve, and therefore the heat dissipation effect of the ICT equipment is influenced.
The following detailed description of the claimed invention refers to the accompanying drawings.
As shown in fig. 1, fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention.
The terminal of the embodiment of the invention can be a refrigerating system, such as an air conditioner, and also can be a control device of the refrigerating system, such as a central controller of the air conditioner.
As shown in fig. 1, the terminal may include: a processor 1001, such as a CPU, a memory 1003, and a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The memory 1003 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). The memory 1003 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the terminal structure shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, the memory 1003, which is a storage medium, may include an operating system and a refrigeration system control program therein.
In the terminal shown in fig. 1, the processor 1001 may be configured to call a refrigeration system control program stored in the memory 1003 and perform the following operations:
acquiring outdoor meteorological parameters of the refrigeration system, the environment temperature in the cabinet of the cabinet and the total power consumption of the equipment, wherein the outdoor meteorological parameters comprise at least one of outdoor air dry bulb temperature and outdoor air wet bulb temperature;
determining target operating parameters of the refrigeration system according to the outdoor meteorological parameters, the ambient temperature in the cabinet and the total power consumption of the equipment;
and controlling the refrigeration system to operate according to the target operation parameters.
Further, the processor 1001 may call a refrigeration system control program stored in the memory 1003, and further perform the following operations:
determining a target refrigeration capacity of the refrigeration system according to the total power consumption of the equipment, wherein the absolute value of the difference between the target refrigeration capacity and the total power consumption is less than or equal to a first preset value;
and determining target operation parameters of the refrigerating system according to the target refrigerating capacity, the outdoor meteorological parameters and the environment temperature in the cabinet.
Further, the processor 1001 may call a refrigeration system control program stored in the memory 1003, and further perform the following operations:
determining at least one group of operation parameters which enable the refrigeration system to reach the target refrigeration amount according to the mapping relation among the outdoor meteorological parameters, the environment temperature in the cabinet and the operation parameters of the refrigeration system;
acquiring a target operation parameter group with minimum operation energy consumption from all operation parameter groups;
and determining the operation parameters in the target operation parameter group as the target operation parameters of the refrigeration system.
Further, the processor 1001 may call a refrigeration system control program stored in the memory 1003, and further perform the following operations:
acquiring a first temperature difference value between the return air temperature of the return air inlet corresponding to each indoor fan and the air supply temperature of the indoor fan;
and turning off the target indoor fan of which the absolute value of the first temperature difference is smaller than or equal to a second preset value.
Further, the processor 1001 may call a refrigeration system control program stored in the memory 1003, and also perform the following operations:
acquiring the air outlet temperature of one side of each device, which is far away from the indoor fan;
determining a second temperature difference value between each air outlet temperature and the target air outlet temperature;
and adjusting the rotating speed of the corresponding indoor fan according to each second temperature difference value.
Further, the processor 1001 may call a refrigeration system control program stored in the memory 1003, and also perform the following operations:
reducing the rotating speed of the target indoor fan of which the second temperature difference value is less than or equal to a third preset value;
and increasing the rotating speed of the target indoor fan of which the second temperature difference value is greater than a third preset value.
Further, the processor 1001 may call a refrigeration system control program stored in the memory 1003, and also perform the following operations:
acquiring an average value of return air temperatures of return air inlets corresponding to the indoor fans;
updating the ambient temperature in the cabinet by using the average value;
and returning to the step of determining the target operation parameters of the refrigeration system according to the outdoor meteorological parameters, the environment temperature in the cabinet and the total power consumption of the equipment.
Referring to fig. 2, the present invention provides a first embodiment of a method for controlling a refrigeration system, which includes the following steps:
step S10, obtaining outdoor meteorological parameters of the refrigerating system, the temperature of the environment in the cabinet of the cabinet and the total power consumption of the equipment, wherein the outdoor meteorological parameters comprise at least one of the outdoor air dry bulb temperature and the outdoor air wet bulb temperature;
s20, determining target operation parameters of the refrigerating system according to the outdoor meteorological parameters, the environment temperature in the cabinet and the total power consumption of the equipment;
and S30, controlling the refrigeration system to operate according to the target operation parameters.
The control method of the present embodiment is described by taking a refrigeration system as an example.
Referring to fig. 3, the refrigeration system includes an outdoor unit 3 and an indoor unit 13, where the indoor unit 13 is installed in a cabinet 1 to dissipate heat of the equipment 2 disposed in the cabinet 1. The outdoor unit 3 is installed outside the cabinet 1.
The outdoor unit 1 comprises a compressor 8, an outdoor heat exchanger 6 and an outdoor fan 7, the indoor unit 13 comprises an indoor heat exchanger 5 and an indoor fan 4, and the compressor 8, the outdoor heat exchanger 6 and the indoor heat exchanger 5 are communicated with each other to form a refrigeration cycle loop. Optionally, a throttling device 9 is further disposed between the outdoor heat exchanger 6 and the indoor heat exchanger 5, and optionally, the throttling device 9 is an electronic expansion valve.
In the embodiment, the indoor unit 13 is integrated in a cabinet 1, and an ICT device 2 is arranged in the cabinet 1, and the ICT device 2 generates heat in the working process. An air outlet of the indoor unit 13 blows towards the ICT equipment 2 to dissipate heat of the ICT equipment 2 in the cabinet 1.
Based on the exemplary technology, the adjusting accuracy of the refrigeration system is not high, which results in poor heat dissipation effect of the ICT device, in this embodiment, the refrigeration system is directly adjusted to the target operation parameter by determining the specific target operation parameter of the refrigeration system, so as to accurately adjust the temperature in the cabinet, so that the temperature in the cabinet is not overcooled or overheated, and the heat dissipation effect of the ICT device is better.
Optionally, the target operation parameter in this embodiment is determined by combining the outdoor meteorological parameter of the refrigeration system, the ambient temperature in the cabinet, and the total power consumption of the equipment, not only considering the influence of the environmental factor on the refrigeration effect of the refrigeration system, but also considering the total heat generated by the equipment, so that the target operation parameter is more accurate, and then the operation parameter of the refrigeration system is accurately adjusted, so that the refrigeration system achieves a more accurate adjustment effect.
The determination of the target operating parameter includes, but is not limited to, the following listed examples:
in one embodiment, the mapping relationship (or the table) between the outdoor weather parameter, the cabinet internal environment temperature, the total power consumption of the equipment and the operation parameter of the refrigeration system is formed by setting the corresponding operation parameter of the refrigeration system under different outdoor weather parameters and cabinet internal environment temperatures and under different total power consumption of the equipment in advance according to the influence of the outdoor weather parameters and the cabinet internal environment temperatures on the refrigeration effect of the refrigeration system, and the mapping relationship is prestored in the memory.
In the actual operation process, the outdoor meteorological parameters, the environment temperature in the cabinet and the total power consumption of the equipment are respectively obtained, then the corresponding target operation parameters are searched according to the mapping relation stored in the memory, and the refrigeration system is controlled to operate according to the target operation parameters.
It can be understood that the mapping relationship is obtained based on a plurality of tests in experiments, and the accuracy is high.
Or, as in another embodiment, the operation parameter calculation model is generated based on the neural network model training in advance according to the influence of the outdoor meteorological parameters and the ambient temperature in the cabinet on the refrigeration effect of the refrigeration system and the corresponding refrigeration capacity requirements under different power consumptions, and is stored in the memory.
In the actual operation process, the outdoor meteorological parameters, the environment temperature in the cabinet and the total power consumption of the equipment are obtained, the influence of the outdoor meteorological parameters and the environment temperature in the cabinet on the refrigeration effect of the refrigeration system is used as input parameters of the operation parameter calculation model, output parameters are obtained, and the output parameters are used as the target operation parameters.
The accuracy based on the operation result of the neural network model is high, so that the regulation and control accuracy of the refrigerating system is high, the accurate refrigeration of the refrigerating system is realized, and the heat dissipation effect of the ICT equipment is improved.
Alternatively, as in yet another embodiment, the step of determining a target operating parameter for the refrigeration system based on the outdoor weather-meteorological parameters, the ambient temperature within the cabinet, and the total power consumption of the equipment comprises:
determining a target refrigeration capacity of the refrigeration system according to the total power consumption of the equipment, wherein the absolute value of the difference between the target refrigeration capacity and the total power consumption is less than or equal to a first preset value;
and determining target operation parameters of the refrigerating system according to the target refrigerating capacity, the outdoor meteorological parameters and the environment temperature in the cabinet.
The present embodiment determines the target operating parameter through the total power consumption of the device detected in real time.
Optionally, on the basis of the influence of the outdoor meteorological parameters and the environment temperature in the cabinet on the refrigeration effect of the refrigeration system, presetting operation parameters of the refrigeration system corresponding to different outdoor meteorological parameters and the environment temperature in the cabinet; and then determining a target cooling capacity of the refrigeration system according to the total power consumption of the equipment, wherein if the total power consumption is E, the target cooling capacity is Q, and the total cooling capacity-E |/E is less than or equal to 10%, namely the ratio of the difference between the cooling capacity and the total power consumption to the total power consumption is less than 10%. Thus, after the target refrigerating capacity is obtained, the target operating parameter which can enable the refrigerating system to reach the target refrigerating capacity is obtained from the outdoor meteorological parameter and the operating parameter corresponding to the ambient temperature in the cabinet, and the refrigerating system is controlled by the target operating parameter.
Optionally, the first preset value is 10% of the total power consumption.
The temperature in the accurate regulation cabinet of this embodiment refrigerating system realization according to actual operation work.
Optionally, in some embodiments, the step of determining a target operating parameter of the refrigeration system based on the target cooling capacity, the outdoor weather-meteorological parameter and the in-cabinet ambient temperature comprises:
determining a target operation parameter of the refrigerating system according to the target refrigerating capacity, the outdoor meteorological parameter and the environment temperature in the cabinet;
acquiring a target operation parameter group which reaches the fastest target refrigerating capacity from all the operation parameter groups;
and determining the operation parameters in the target operation parameter group as the target operation parameters of the refrigeration system.
Namely, the operating parameter which enables the refrigerating speed of the refrigerating system to be the fastest is selected, and the refrigerating system is adjusted, so that the refrigerating capacity in the cabinet can be rapidly subjected to heat exchange with the heat generated by the equipment, and the purpose of rapid heat dissipation is achieved.
Optionally, in further embodiments, the step of determining a target operating parameter of the refrigeration system according to the target cooling capacity, the outdoor weather-meteorological parameter and the ambient temperature inside the cabinet comprises:
determining at least one group of operation parameters which enable the refrigeration system to reach the target refrigeration amount according to the mapping relation among the outdoor meteorological parameters, the environment temperature in the cabinet and the operation parameters of the refrigeration system;
acquiring a target operation parameter group with minimum operation energy consumption from all operation parameter groups;
and determining the operation parameters in the target operation parameter group as the target operation parameters of the refrigeration system.
That is, after determining the better operation parameters of the refrigeration system based on the outdoor meteorological parameters and the ambient temperature in the cabinet, selecting the operation parameters which enable the operation energy consumption to be the lowest from all the better operation parameters as the target operation parameters, so that when the refrigeration system operates according to the target operation parameters, the refrigeration system not only enables the temperature in the cabinet to be accurately adjusted, and the equipment in the cabinet is accurately cooled, but also can furthest reduce the operation energy consumption of the refrigeration system of the cabinet, and the refrigeration system achieves the effect of high-efficiency energy-saving operation in the process of cooling the equipment in the cabinet.
Optionally, the operation parameter of the refrigeration system includes at least one of an operation frequency of the compressor, a rotation speed of the outdoor fan, and an opening degree of the throttling device. In some embodiments, the operating parameters further include a rotational speed of an indoor fan, and the like.
Optionally, the outdoor weather-meteorological parameters include at least one of an outdoor air dry-bulb temperature detected by an outdoor air dry-bulb sensor and an outdoor air wet-bulb temperature detected by an outdoor air wet-bulb sensor. And the environment temperature in the cabinet of the cabinet is detected by a return air temperature sensor of a return air inlet of the indoor unit. The total power consumption of the device is detected by a power consumption detection device or a voltage and current detection device.
It can be understood that, in this embodiment, the target operation parameter of the refrigeration system is determined by the outdoor meteorological parameter of the refrigeration system, the ambient temperature in the cabinet of the refrigeration system, and the total power consumption of the equipment in the cabinet; and then directly controlling the refrigeration system to operate according to the target operation parameters. So, refrigerating system directly operates with definite target operating parameter, need not constantly to adjust operating parameter through return air temperature, not only can avoid the frequent adjustment of compressor, can also make the temperature in the accurate adjustment rack of refrigerating system, avoids the temperature supercooling or overheated in the rack, improves the radiating effect of equipment in the rack.
Second embodiment
Based on the first embodiment, the present embodiment is applied to a scenario in which a plurality of devices are integrated in a cabinet. The cabinet is integrated with a plurality of devices, the devices can work simultaneously or not, the control of the refrigerating system is combined, the heat dissipation of local hot spots in the cabinet is realized, the energy consumption of the refrigerating system is reduced, and the energy waste is reduced.
Optionally, referring to fig. 4, the indoor unit 13 includes at least two indoor fans 4, each indoor fan 4 supplies air to at least one device 2, the indoor unit 13 is provided with at least one return air inlet corresponding to each indoor fan 4, each return air inlet is provided with a return air temperature sensor 11, and an air supply outlet of each indoor fan 4 is provided with an air supply temperature sensor 10.
In this embodiment, each indoor fan 4 correspondingly dissipates heat to at least one device 2, and local hot spot heat dissipation in the cabinet 1 can be realized by independently controlling the indoor fans 4.
Optionally, referring to fig. 5, after the step of controlling the refrigeration system to operate according to the target operating parameter, the method further includes:
s40, acquiring a first temperature difference value between the return air temperature of the return air inlet corresponding to each indoor fan and the air supply temperature of the indoor fan;
and S50, turning off the target indoor fan of which the absolute value of the first temperature difference is smaller than or equal to a second preset value.
Based on the indoor fan of accessible independent control, realize dispelling the heat to local hot spot in the rack. In the operation process of the refrigeration system, the return air temperature of the return air inlet corresponding to each indoor fan and the first temperature difference value of the air supply temperature are obtained in real time or at regular time, if the target indoor fan with the absolute value of the first temperature difference value of the return air temperature and the air supply temperature smaller than or equal to the second preset value exists, the condition that equipment at the air supply port of the target indoor fan does not work is judged, and cold air blown out by the target indoor fan does not exchange heat with heat of the equipment. Therefore, in order to avoid the loss of the cold energy in the area, the target indoor fan is closed, so that the air subjected to heat exchange by the indoor heat exchanger flows to other equipment needing heat dissipation, and the heat dissipation effect of the other equipment is improved.
Alternatively, the refrigeration system may start all the indoor fans just after starting, and then execute the present embodiment.
Optionally, the refrigeration system may also determine a target device to be operated according to an operation signal of the device, and then when the compressor is started, only the indoor fan corresponding to the target device is started, and the indoor fans corresponding to the other devices are not started. In these embodiments, the present embodiment is applied to a scenario in which the target device is turned off after operating for a period of time. That is when refrigerating system starts, equipment is in the running state, and at refrigerating system to the radiating in-process of rack, and partial equipment stop work midway, at this moment, this embodiment can in time close the indoor fan that equipment corresponds after equipment stop work, reduces the loss of cold volume. Optionally, in the operation process of the refrigeration system, if the indoor fan with the absolute value of the right first temperature difference value larger than the second preset value is detected and the indoor fan is in a closed state, the indoor fan is started to dissipate heat of the equipment corresponding to the indoor fan (for example, the equipment which is closed in the operation process of the refrigeration system and the equipment which is started in the operation process of the refrigeration system timely dissipate heat of the equipment).
Optionally, each indoor fan may be provided with an indoor heat exchanger. Or a plurality of indoor fans are arranged in parallel in the air outlet direction of the indoor heat exchanger. The specific composition of the indoor fan and the indoor heat exchanger is not particularly limited.
Alternatively, in an embodiment, the second preset value may be determined according to the detected supply air temperature, for example, the second preset value is 10% of the supply air temperature.
Third embodiment
Based on all the above embodiments, the present embodiment is applied to a scenario in which a plurality of devices are integrated in a cabinet. A plurality of devices are integrated in the cabinet, the plurality of devices can work simultaneously or not, and the power consumption of the devices working simultaneously can be different. This embodiment combines refrigerating system's control, realizes adjusting the radiating efficiency of the equipment of different consumptions in the rack, further improves refrigerating system's radiating effect.
Optionally, referring to fig. 4, the indoor unit 13 includes at least two indoor fans 4, each indoor fan 4 supplies air to at least one device 2, the indoor unit 13 is provided with at least one air return opening corresponding to each indoor fan 4, each air return opening is provided with a return air temperature sensor 11, an air supply outlet of each indoor fan 4 is provided with an air supply temperature sensor 10, and one side of each device 2, which is away from the indoor fan 4, is provided with an air outlet temperature sensor 12, which is used for detecting an air temperature (i.e., an air outlet temperature) of air blown by the indoor fans 4 after heat exchange is performed by the devices 2.
This embodiment dispels the heat to different equipment 2 based on different indoor fan 4, can adjust the local heat dissipation condition of rack 1 according to the radiating efficiency of different equipment 2, need not all regions and all adopt the same air supply speed (need not to adopt the same radiating effect to dispel the heat to each equipment). Therefore, local heat dissipation can be performed pertinently based on the heat condition generated by the equipment 2, the heat dissipation efficiency of the equipment 2 in the whole cabinet 1 is improved, and meanwhile, the energy-saving effect is achieved to the greatest extent.
Referring to fig. 6, after the step of controlling the refrigeration system to operate according to the target operating parameter, the method further includes:
s60, acquiring the air outlet temperature of one side of each device, which is far away from the indoor fan;
step S70, determining a second temperature difference value between each air outlet temperature and the target air outlet temperature;
and S80, adjusting the rotating speed of the corresponding indoor fan according to each second temperature difference value.
And correspondingly supplying air to at least one device based on each indoor fan so as to dissipate heat of the device. However, different devices may have different power consumption and different amounts of heat generated. When the running frequency of a compressor of the refrigerating system is consistent with the rotating speed of an outdoor fan, the surface temperature of the indoor heat exchanger is the same, if the rotating speeds of all the indoor fans are consistent, the heat dissipation of equipment with large heat generation is slow, the heat dissipation of equipment with small heat generation is fast, and the cold quantity is lost. Based on this, but this embodiment combines the characteristics of indoor fan independent control, and in the operation process, real-time or regularly detect every equipment and keep away from the air-out temperature of indoor fan one side, then compare air-out temperature and predetermined target air-out temperature obtain the second temperature difference, then transfer the rotational speed of the indoor fan that corresponds according to the second temperature difference for the second temperature difference is less, makes each equipment homoenergetic reach the target radiating effect fast. It should be noted that the target air outlet temperature refers to a preset safe temperature threshold of an area where the equipment is located (if the temperature of air blown by the indoor fan after heat exchange of the equipment reaches the safe temperature threshold, it indicates that the temperature of the equipment is relatively low and is below the safe temperature threshold, so as to achieve a required heat exchange effect).
Optionally, the step of adjusting the rotation speed of the corresponding indoor fan according to each second temperature difference value includes:
reducing the rotating speed of the target indoor fan of which the second temperature difference value is less than or equal to a third preset value;
and increasing the rotating speed of the target indoor fan with the second temperature difference value larger than a third preset value.
When the second temperature difference value between the air outlet temperature of the equipment corresponding to the target indoor fan and the target air outlet temperature is larger than a third preset value, it is indicated that the heat generated by the equipment corresponding to the target indoor fan is high or the heat dissipation is slow, and the temperature of the equipment corresponding to the target indoor fan does not reach below a safe temperature threshold value, so that the heat dissipation effect of the equipment is accelerated, the rotating speed of the target indoor fan is increased, and the heat dissipation efficiency of the equipment is improved.
And when the second temperature difference between the air outlet temperature of the equipment corresponding to the target indoor fan and the target air outlet temperature is smaller than or equal to the third preset value, it indicates that the heat generated by the equipment corresponding to the target indoor fan is low or the heat dissipation is fast. And the temperature of the equipment corresponding to the target indoor fan meets the requirement of a safe temperature threshold. In order to disperse the cold energy to other devices needing heat dissipation, reduce the loss of the cold energy and reduce the rotating speed of the target indoor fan so as to reduce the cold energy blown to the devices, thereby ensuring the heat dissipation requirement of the devices, reducing the loss of the cold energy and saving energy.
Optionally, the rotation speed of the target indoor fan may be adjusted by the following methods:
and if a multi-gear windshield is arranged, gradually increasing or decreasing the windshield of the target indoor fan.
And if the corresponding relation between the preset temperature difference and the wind speed and the corresponding relation between the preset temperature difference and the wind speed adjusting value exist, determining the target rotating speed of the target indoor fan according to the second temperature difference and the corresponding relation between the temperature difference and the wind speed, and further directly adjusting the rotating speed of the target indoor fan to the target rotating speed.
Or, if the corresponding relation between the temperature difference value and the wind speed adjusting value is preset, determining the target wind speed adjusting value of the target indoor fan according to the second temperature difference value and the corresponding relation between the temperature difference value and the wind speed adjusting value, and increasing or decreasing the target wind speed adjusting value based on the current rotating speed of the target indoor fan.
Optionally, the third preset value may be a preset fixed value, or may be determined according to the target outlet air temperature, and if the third preset value is 10% of the target outlet air temperature. Alternatively, the target outlet air temperature may be different according to different devices.
Fourth embodiment
The present embodiment is based on the third embodiment described above. In the application scenario that the indoor unit comprises at least two indoor fans, the embodiment is applied to the scenario that a plurality of devices are integrated in the cabinet. A plurality of devices are integrated in the cabinet, the devices can work simultaneously or not, and the power consumption of the devices working simultaneously can be different. After the cooling efficiency of the equipment with different power consumption in the cabinet is adjusted by combining the control of the refrigeration system, in order to further improve the adjustment precision of the refrigeration system, the present embodiment updates the ambient temperature in the cabinet, and recalculates the target operation parameter of the refrigeration system according to the updated ambient temperature in the cabinet, so that the target operation parameter is more prone to the requirements of each area inside the cabinet based on the adjustment condition of the equipment in the cabinet.
Optionally, referring to fig. 7, after the step of adjusting the rotation speed of the corresponding indoor fan according to each difference value, the method further includes:
s90, acquiring the average value of the return air temperature of the return air inlet corresponding to each indoor fan;
step S100, updating the ambient temperature in the cabinet by adopting the average value;
and returning to the step of determining the target operation parameters of the refrigeration system according to the outdoor meteorological parameters, the environment temperature in the cabinet and the total power consumption of the equipment.
Based on the first embodiment, the ambient temperature in the cabinet is determined by the temperature detected by one return air inlet of the indoor unit, the temperature of each position in the cabinet is affected by different devices, and if the target operation parameter is determined according to the temperature of one return air inlet, the error of the refrigerating capacity is large.
Therefore, in this embodiment, after the refrigeration system is adjusted as described above, the average value of the return air temperatures of the return air inlets corresponding to the indoor fans is obtained, then the average value is used as the cabinet internal environment temperature, the cabinet internal environment temperature is updated, and then the target operation parameter of the refrigeration system is determined according to the outdoor meteorological parameter, the updated cabinet internal environment temperature, and the total power consumption of the equipment. After the refrigerating system operates according to the re-determined target operating parameter, the refrigerating capacity of the refrigerating system is closer to the heat dissipation requirement in the cabinet. And the air supply volume of different indoor fans to different equipment is controlled in a combined manner, so that the refrigerating capacity is fully utilized, and the heat dissipation effect of the refrigerating system is better.
An embodiment of the present invention further provides a refrigeration system, where the refrigeration system includes:
an outdoor unit including a compressor and an outdoor heat exchanger;
the indoor unit is used for being installed in a cabinet and comprises an indoor heat exchanger, and the compressor, the outdoor heat exchanger and the indoor heat exchanger are communicated to form a refrigeration cycle system so as to dissipate heat of equipment arranged in the cabinet;
the control device is communicated with the outdoor unit and the equipment, and is used for acquiring target operation parameters of the refrigeration system according to outdoor meteorological parameters of the refrigeration system, the temperature of the environment in the cabinet and the total power consumption of the equipment, and controlling the refrigeration system to operate according to the target operation parameters.
The present invention also provides a refrigeration system comprising: a memory, a processor, and a refrigeration system control program stored on the memory and executable on the processor, the refrigeration system control program when executed by the processor implementing the steps of the control method of the refrigeration system as described above.
In addition, an embodiment of the present invention further provides a storage medium, where a refrigeration system control program is stored on the storage medium, and when the refrigeration system control program is executed by a processor, the steps of the control method of the refrigeration system according to the above embodiments are implemented.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on this understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes several instructions for causing a refrigeration system to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A control method of a refrigeration system is characterized in that the refrigeration system comprises an outdoor unit and an indoor unit, the indoor unit is installed in a cabinet to dissipate heat of equipment arranged in the cabinet, and the control method of the refrigeration system comprises the following steps:
acquiring outdoor meteorological parameters of the refrigeration system, the environment temperature in the cabinet of the cabinet and the total power consumption of the equipment, wherein the outdoor meteorological parameters comprise at least one of outdoor air dry bulb temperature and outdoor air wet bulb temperature;
determining target operation parameters of the refrigeration system according to the outdoor meteorological parameters, the environment temperature in the cabinet and the total power consumption of the equipment;
and controlling the refrigeration system to operate according to the target operation parameters.
2. The method of controlling a refrigerant system as set forth in claim 1 wherein said step of determining target operating parameters of said refrigerant system based upon said outdoor weather-meteorological parameters, said in-cabinet ambient temperature, and total power consumption of said equipment includes:
determining a target refrigerating capacity of the refrigerating system according to the total power consumption of the equipment, wherein the absolute value of the difference value between the target refrigerating capacity and the total power consumption is smaller than or equal to a first preset value;
and determining target operation parameters of the refrigerating system according to the target refrigerating capacity, the outdoor meteorological parameters and the environment temperature in the cabinet.
3. The method of claim 2, wherein said step of determining a target operating parameter for the refrigeration system based on the target cooling capacity, the outdoor weather-meteorological parameters, and the cabinet-internal ambient temperature comprises:
determining at least one group of operation parameters which enable the refrigeration system to reach the target refrigeration amount according to the mapping relation among the outdoor meteorological parameters, the environment temperature in the cabinet and the operation parameters of the refrigeration system;
acquiring a target operation parameter group with minimum operation energy consumption from all operation parameter groups;
and determining the operation parameters in the target operation parameter group as the target operation parameters of the refrigeration system.
4. The method of any of claims 1 to 3, wherein the indoor unit comprises at least two indoor fans, each indoor fan supplies air to at least one of the devices, the indoor unit has at least one return air inlet corresponding to each indoor fan, and after the step of controlling the operation of the refrigeration system according to the target operation parameter, the method further comprises:
acquiring a first temperature difference value between the return air temperature of the return air inlet corresponding to each indoor fan and the air supply temperature of the indoor fan;
and turning off the target indoor fan of which the absolute value of the first temperature difference is smaller than or equal to a second preset value.
5. The control method of a refrigerating system as recited in any one of claims 1 to 3, wherein said indoor unit includes at least two indoor fans, each of said indoor fans supplying air to at least one of said devices; after the step of controlling the refrigeration system to operate according to the target operation parameter, the method further includes:
acquiring the air outlet temperature of one side of each device, which is far away from the indoor fan;
determining a second temperature difference value between each air outlet temperature and the target air outlet temperature;
and adjusting the rotating speed of the corresponding indoor fan according to each second temperature difference value.
6. The method of claim 5, wherein the step of adjusting the rotation speed of the corresponding indoor fan according to each of the second temperature differences comprises:
reducing the rotating speed of the target indoor fan of which the second temperature difference value is less than or equal to a third preset value;
and increasing the rotating speed of the target indoor fan of which the second temperature difference value is greater than a third preset value.
7. The method of claim 5, wherein the step of adjusting the speed of the corresponding indoor fan according to the difference further comprises:
acquiring an average value of return air temperatures of return air inlets corresponding to the indoor fans;
updating the ambient temperature in the cabinet by adopting the average value;
and returning to the step of determining the target operation parameters of the refrigeration system according to the outdoor meteorological parameters, the environment temperature in the cabinet and the total power consumption of the equipment.
8. A refrigeration system, comprising:
an outdoor unit including a compressor and an outdoor heat exchanger;
the indoor unit is used for being installed in the cabinet and comprises an indoor heat exchanger, and the compressor, the outdoor heat exchanger and the indoor heat exchanger are communicated to form a refrigeration cycle system so as to dissipate heat of equipment arranged in the cabinet;
the control device is used for acquiring target operation parameters of the refrigerating system according to outdoor meteorological parameters of the refrigerating system, the environment temperature in the cabinet and the total power consumption of the equipment, and controlling the refrigerating system to operate according to the target operation parameters.
9. A refrigeration system, comprising: a memory, a processor and a refrigeration system control program stored on the memory and executable on the processor, the refrigeration system control program when executed by the processor implementing the steps of the method of controlling a refrigeration system of any of claims 1 to 7.
10. A storage medium, characterized in that the storage medium has stored thereon a refrigeration system control program that, when executed by a processor, implements the steps of the control method of a refrigeration system according to any one of claims 1 to 7.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117458048A (en) * | 2023-09-04 | 2024-01-26 | 东莞市深合电气有限公司 | Refrigerating capacity control method of liquid cooling unit, liquid cooling unit and energy storage system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117458048A (en) * | 2023-09-04 | 2024-01-26 | 东莞市深合电气有限公司 | Refrigerating capacity control method of liquid cooling unit, liquid cooling unit and energy storage system |
| CN117458048B (en) * | 2023-09-04 | 2024-05-24 | 东莞市深合电气有限公司 | Refrigerating capacity control method of liquid cooling unit, liquid cooling unit and energy storage system |
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