Control method and control system of refrigeration device, electronic equipment and storage medium

Abstract

The invention provides a control method and system of a refrigerating device, electronic equipment and a storage medium, and the control method of the refrigerating device comprises the steps that in the working process of a module unit or a water machine unit, the first working load of the module unit or the water machine unit is obtained; when the first working load of the water machine unit is smaller than the first rated load, the refrigerating device is controlled to be switched to a module machine mode in which the module unit works independently; and when the first working load of the module unit is larger than the second rated load, the refrigerating device is controlled to be switched to a water machine mode in which the water machine unit works independently. According to the control method, the working modes are dynamically switched according to the workloads of the module unit and the water machine unit, and it can be ensured that the most suitable unit is used at the proper time to provide refrigeration. When the load is light, unnecessary energy consumption can be reduced by using the module unit, and when the load is high, enough refrigerating capacity can be ensured by switching to the water machine unit, so that the optimization of the overall energy efficiency is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment control, and particularly to a control method, a control system, an electronic device, and a storage medium for a refrigeration device. Background Art

[0002] With the development of modern commercial buildings, central air-conditioning systems have become important facilities for maintaining the comfort of indoor environments. In large commercial air-conditioning machine rooms, to meet the refrigeration requirements of different building spaces and different time periods, multiple types, multiple brands, and multiple cooling capacities of air-conditioning units are usually configured, such as magnetic levitation air suspension water chillers, multi-connected units, modular units, etc. These units vary in terms of refrigeration efficiency, operating cost, control logic, etc. Therefore, how to efficiently and intelligently dispatch these units to achieve the purpose of energy conservation and consumption reduction has become the focus of attention in the industry.

[0003] Traditional air-conditioning machine room management methods mainly rely on manual judgment and manual operation, and there are many deficiencies in this way. First of all, it is difficult for manual judgment to accurately predict future refrigeration requirements, which may cause the unit to still operate at a high load when the refrigeration requirement is small, resulting in energy waste. Secondly, manual operation is inefficient and it is difficult to accurately dispatch multiple units in a short time, affecting the overall operating efficiency of the system. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the related art. For this purpose, the present invention proposes a control method for a refrigeration device, which solves the problem of energy waste caused by the unit still operating at a high load when the refrigeration requirement is small.

[0005] According to the control method for a refrigeration device provided by the first aspect embodiment of the present invention, the refrigeration device includes: a modular unit and a water chiller unit; the modular unit includes multiple modular machines, the water chiller unit includes multiple water chillers, the cooling capacity of the water chiller unit is greater than that of the modular unit, and the cooling capacity of the modular machine is greater than that of the water chiller; The control method for the refrigeration device includes: During the operation of the modular unit or the water chiller unit, obtain the first working load of the modular unit or the water chiller unit; When the first working load of the water chiller unit is less than the first rated load, control the refrigeration device to switch to the modular machine mode in which the modular unit works alone; When the first working load of the modular unit is greater than the second rated load, control the refrigeration device to switch to the water chiller mode in which the water chiller unit works alone; Wherein, the first rated load is at least a part of the rated working load of a single water chiller, and the second rated load is the rated working load of the modular unit.

[0006] The control method of the refrigeration device provided by the present invention dynamically switches the working mode according to the working loads of the modular unit and the water chiller unit. This method can ensure that the most suitable unit is used to provide refrigeration at the appropriate time. When the load is light, using the modular unit can reduce unnecessary energy consumption, and when the load is high, switching to the water chiller unit can ensure sufficient refrigeration capacity, thereby optimizing the overall energy efficiency.

[0007] According to an embodiment of the present invention, the step of controlling the refrigeration device to switch to the modular machine mode in which the modular unit works alone when the first working load of the water chiller unit is less than the first rated load includes: When the first working load of the water chiller unit within the first preset time is less than the first rated load, turn off the water chiller unit and turn on the modular unit.

[0008] Adopting this design in the embodiment of the present invention can more precisely control the switching between the water chiller unit and the modular unit of the refrigeration device, ensuring efficient energy utilization and stable operation of the equipment while meeting the refrigeration requirements.

[0009] According to an embodiment of the present invention, after the step of controlling the refrigeration device to switch to the modular machine mode in which the modular unit works alone, it further includes: Obtain the second working load of the modular unit; Adjust the number of working modular machines in the modular unit according to the second working load.

[0010] The control method of the refrigeration device provided by the present invention can adjust the number of working modular machines according to the real-time second working load after switching to the modular machine mode, ensuring efficient energy utilization and stable operation of the equipment while meeting the refrigeration requirements.

[0011] According to an embodiment of the present invention, the step of controlling the refrigeration device to switch to the water chiller mode in which the water chiller unit works alone when the first working load of the modular unit is greater than the second rated load includes: When the first working load of the modular unit within the second preset time is greater than the second rated load, turn off the modular unit and turn on the water chiller unit.

[0012] Through the above steps, the refrigeration device can timely switch to the water chiller unit for refrigeration when the working load of the modular unit is too large, ensuring the satisfaction of the refrigeration demand, and at the same time realizing efficient energy utilization and stable operation of the equipment.

[0013] After the step of controlling the refrigeration device to switch to the water chiller mode in which the water chiller unit operates alone according to an embodiment of the present invention, the following steps are further included: Obtain the third working load of the water chiller unit; Adjust the number of operating water chillers in the water chiller unit according to the third working load.

[0014] In the embodiment of the present invention, through the above steps, after the refrigeration device switches to the water chiller mode, it can adjust the number of operating water chillers in the water chiller unit according to the real-time third working load, so as to ensure the efficient utilization of energy and the stable operation of the equipment while meeting the refrigeration demand.

[0015] According to an embodiment of the present invention, the step of comparing the first working load of the modular unit with the second rated load includes: Obtain the actual return water temperature of the water chiller unit; Compare the obtained actual return water temperature with the set return water temperature to determine the magnitude of the first working load and the second rated load of the modular unit.

[0016] In the embodiment of the present invention, it is possible to more accurately determine whether the working load of the modular unit exceeds the rated load, so as to take corresponding measures in a timely manner to ensure the stable operation of the unit.

[0017] According to an embodiment of the present invention, when the first working load of the water chiller unit is greater than the third rated load, control the refrigeration device to switch to the hybrid mode in which the modular unit and the water chiller unit operate simultaneously.

[0018] Through the above steps, when the working load of the water chiller unit also exceeds its processing capacity, the refrigeration device can timely switch to the hybrid mode, and through the collaborative work of the modular unit and the water chiller unit, meet the refrigeration demand, and at the same time ensure the stable operation and high energy efficiency of the refrigeration system.

[0019] According to an embodiment of the present invention, after the step of controlling the refrigeration device to switch to the hybrid mode in which the modular unit and the water chiller unit operate simultaneously, the following steps are further included: Obtain the fourth working load of the modular unit and the water chiller unit; Adjust the number of operating modular machines in the modular unit and the number of operating water chillers in the water chiller unit according to the fourth working load.

[0020] Through the above steps, it is possible to dynamically adjust the number of operating modular machines and water chillers in the modular unit and the water chiller unit according to the real-time working load and refrigeration demand, so as to ensure the stable operation and high energy efficiency of the refrigeration system.

[0021] The control system of the refrigeration device according to the embodiment of the second aspect of the present invention includes: An acquisition module, configured to acquire the first working load of the modular unit or the water chiller unit during the operation of the modular unit or the water chiller unit; A first switching module, configured to control the refrigeration device to switch to the modular unit mode in which the modular unit works alone when the first working load of the water chiller unit is less than the first rated load; A second switching module, configured to control the refrigeration device to switch to the water chiller mode in which the water chiller unit works alone when the first working load of the modular unit is greater than the second rated load; Wherein, the first rated load is at least a part of the rated working load of a single water chiller, and the second rated load is the rated working load of the modular unit.

[0022] The electronic device according to the embodiment of the third aspect of the present invention includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the control method of the refrigeration device is implemented.

[0023] The embodiment of the fourth aspect of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the control method of the refrigeration device is implemented.

[0024] The fifth aspect of the present invention further provides a computer program product. The computer program product includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the control method of the refrigeration device.

[0025] The control method of the refrigeration device provided by the present invention dynamically switches the working mode according to the working loads of the modular unit and the water chiller unit. This method can ensure that the most suitable unit is used to provide refrigeration at the appropriate time. When the load is light, using the modular unit can reduce unnecessary energy consumption, and when the load is high, switching to the water chiller unit can ensure sufficient refrigeration capacity, thereby optimizing the overall energy efficiency. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1Flowchart of the control method for the refrigeration device provided by the embodiment of the present invention.

[0028] Figure 2 Overall flowchart of the control method for the refrigeration device provided by the embodiment of the present invention.

[0029] Figure 3 Schematic diagram for adjusting the number of operating modular units in the control method for the refrigeration device provided by the embodiment of the present invention.

[0030] Figure 4 Schematic diagram for adjusting the number of operating water chillers in the control method for the refrigeration device provided by the embodiment of the present invention.

[0031] Figure 5 Schematic structural diagram of the control system provided by the embodiment of the present invention.

[0032] Figure 6 Schematic structural diagram of the electronic device provided by the embodiment of the present invention.

[0033] Reference numerals: 510, acquisition module; 520, first switching module; 530, second switching module; 610, processor; 620, communication interface; 630, memory; 640, communication bus. Detailed implementation manners

[0034] To make the objectives, technical solutions, and advantages of the invention clearer, the technical solutions in the invention will be clearly described below with reference to the accompanying drawings in the invention. Obviously, the described embodiments are some but not all of the embodiments of the invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the invention without creative efforts shall fall within the protection scope of the invention.

[0035] A control method for a refrigeration device according to an embodiment of the first aspect of the present invention. The refrigeration device includes: a modular unit group and a water chiller unit group; the modular unit group includes multiple modular units, the water chiller unit group includes multiple water chillers, the refrigerating capacity of the water chiller unit group is greater than that of the water chiller unit group, and the refrigerating capacity of the modular unit is greater than that of the water chiller.

[0036] As Figure 1 and Figure 2 shown, the control method for the refrigeration device includes the following steps: Step S110: During the operation of the modular unit group or the water chiller unit group, obtain the first working load of the modular unit group or the water chiller unit group.

[0037] Step S120: When the first working load of the water chiller unit group is less than the first rated load, control the refrigeration device to switch to the modular unit mode in which only the modular unit group operates.

[0038] Step S130: When the first operating load of the modular unit is greater than the second rated load, control the refrigeration device to switch to the water chiller mode in which the water chiller unit operates alone.

[0039] Specifically, during the operation of the modular unit or the water chiller unit, through devices such as sensors or intelligent meters, the first operating load of the modular unit or the water chiller unit is obtained in real time. Then, the obtained first operating load is compared and analyzed with the refrigeration demand.

[0040] When the first operating load of the water chiller unit is less than the first rated load (for example, 20% of the rated operating load of a single water chiller), start the switching mechanism. Control the refrigeration device to switch to the modular chiller mode in which the modular unit operates alone. Control the refrigeration device to gradually shut down all the water chillers in the water chiller unit. Gradually start the modular chillers in the modular unit until the refrigeration demand is met, ensuring that the modular unit can meet the current refrigeration demand.

[0041] When the first operating load of the modular unit is greater than the second rated load (for example, 80% of the rated operating load of the modular unit), start the switching mechanism again. Control the refrigeration device to switch to the water chiller mode in which the water chiller unit operates alone. Control the refrigeration device to gradually shut down all the modular chillers in the modular unit. Gradually start the water chillers in the water chiller unit until the refrigeration demand is met, so that it reaches the optimal operating state.

[0042] The control method of the refrigeration device provided by the present invention can dynamically switch the working mode according to the operating loads of the modular unit and the water chiller unit. This method can ensure that the most suitable unit is used to provide refrigeration at the appropriate time. At low loads, using the modular unit can reduce unnecessary energy consumption, while at high loads, switching to the water chiller unit can ensure sufficient refrigeration capacity, thereby optimizing the overall energy efficiency.

[0043] In some embodiments, as Figure 2 shown, step S120: The step of controlling the refrigeration device to switch to the modular chiller mode in which the modular unit operates alone when the first operating load of the water chiller unit is less than the first rated load includes: Step S1210: When the first operating load of the water chiller unit is less than the first rated load within the first preset time, shut down the water chiller unit and start the modular unit.

[0044] Specifically, the refrigeration system continuously monitors the operating load of the water chiller unit in real time and compares it with the first rated load.

[0045] When the system detects that the first working load of the water chiller unit is less than the first rated load, it starts a timer to record the first preset time (such as 5 minutes, 10 minutes, etc.). During this first preset time, the system continuously monitors the working load of the water chiller unit to ensure that its load is less than the first rated load during this period.

[0046] If the working load of the water chiller unit is always less than the first rated load within the first preset time, the system determines that the current cooling demand is relatively small and it is suitable to use the modular unit for cooling. Based on this judgment, the system issues an instruction to gradually shut down all the water chillers in the water chiller unit. The shutdown process can be carried out step by step to ensure a smooth transition of the cooling demand. After the water chiller unit is completely shut down, the system calculates and determines the number of modular units that need to be started according to the current cooling demand and the performance parameters of the modular unit.

[0047] Subsequently, the system issues an instruction to gradually start the corresponding number of modular units to take over the water chiller unit to meet the cooling demand. After the modular unit starts working, the system continuously monitors its working load and operating status to ensure that the cooling demand is met. If it is found that the modular unit cannot meet the cooling demand or there are abnormal operations, the system can make adjustments according to the actual situation, such as increasing the number of started modular units, adjusting the operating parameters of the modular unit, etc.

[0048] Through the above extended embodiment, the switching between the water chiller unit and the modular unit of the refrigeration device can be controlled more precisely, ensuring the efficient utilization of energy and the stable operation of the equipment while meeting the cooling demand.

[0049] To ensure that the modular unit can meet the cooling requirements, after the step of controlling the refrigeration device to switch to the modular unit mode where the modular unit works alone, it further includes: Step S1220: Obtain the second working load of the modular unit.

[0050] Step S1230: Adjust the number of working modular units in the modular unit according to the second working load.

[0051] In this embodiment, after the modular unit starts working, the control system continuously monitors and records the actual working load of the modular unit, that is, the second working load. The second working load reflects the actual situation of the current modular unit in meeting the cooling demand.

[0052] The control system compares the obtained second working load with the rated working load of the modular unit, and at the same time considers the current cooling demand and environmental conditions (such as temperature, humidity, etc.). Analyze the change trend and fluctuation range of the second working load to judge whether the current working state of the modular unit is efficient and stable. According to the analysis result of the second working load, the system judges whether it is necessary to adjust the number of working modular units in the modular unit.

[0053] If the second workload is much lower than the rated workload of the modular unit and the refrigeration demand is stable, the system can gradually reduce the number of operating modular units to save energy and extend the equipment lifespan. If the second workload is close to or exceeds the rated workload of the modular unit, or the refrigeration demand increases, the system needs to gradually increase the number of operating modular units to ensure that the refrigeration demand is met.

[0054] As Figure 3 shown, in the process of controlling the number of operating modular units in the modular unit group (involving the control of modular units, circulating pumps, valves, etc.), first, the interface and protocol for communicating with the PLC need to be determined. Through programming or dedicated software, commands to shut down or start up the unit are sent to the actuator PLC. These commands are usually sent to specific registers or addresses of the PLC in a specific data format and encoding. After sending the commands, it is necessary to wait for and verify the response of the actuator PLC to ensure that the commands have been correctly executed. After adjusting the number of operating modular units, the host computer should continuously monitor the data reported by the PLC to ensure that the modular units are operating as expected. Then, the logical part in the host computer code that controls the addition and subtraction of modular units needs to be identified. Since the host computer code logic is regarded as a black box, the addition and subtraction machine logic code block can be copied using the deep copy method. Deep copy means creating a complete copy of the code block, including all variables and states. To test and adjust the addition and subtraction machine logic, the data reported by the actuator PLC to the host computer is required. In the simulated data, modify the data related to the switch unit to trigger the execution of the addition and subtraction machine logic. By running the modified simulated data and the addition and subtraction machine logic code block, verify whether the logic is correctly executed, that is, whether the switching on and off of the modular units are as expected. After verification, integrate the modified logic or control commands into the actual host computer system to ensure that the number of operating modular units can be correctly controlled during actual operation. During actual operation, the operating status of the modular units should be continuously monitored, and the control strategy or parameters should be adjusted according to the actual situation to optimize the operating efficiency and performance of the modular units.

[0055] After adjusting the number of operating modular units, the control system needs to continuously monitor the second workload and operating status of the modular unit group. If new changes or abnormal situations are found, the system needs to react in a timely manner and adjust the number of operating modular units again or take other measures.

[0056] The control method of the refrigeration device provided by the present invention can, after switching to the modular unit mode, adjust the number of operating modular units according to the real-time second workload, ensuring efficient energy utilization and stable operation of the equipment while meeting the refrigeration demand.

[0057] In some embodiments, as Figure 2As shown, step S130: When the first working load of the modular unit is greater than the second rated load, the step of controlling the refrigeration device to switch to the water chiller mode where the water chiller unit works alone includes: Step S1310: When the first working load of the modular unit is greater than the second rated load within the second preset time, turn off the modular unit and turn on the water chiller unit.

[0058] The refrigeration system continuously and real-time monitors the working load of the modular unit and compares it with the second rated load (i.e., the rated working load of the modular unit).

[0059] When the system detects that the first working load of the modular unit is greater than the second rated load, start the timer and begin to record the second preset time (such as 5 minutes, 10 minutes, etc.). During this period, the system continuously monitors the working load of the modular unit to ensure that its load is greater than the second rated load during this period.

[0060] If within the second preset time, the working load of the modular unit is always greater than the second rated load, the system determines that the current refrigeration demand is large and the modular unit can no longer meet the demand, and it is necessary to switch to the water chiller unit for refrigeration. Based on this judgment, the control system issues an instruction to gradually turn off all the modular machines in the modular unit. The shutdown process should be carried out smoothly to avoid having too much impact on the refrigeration effect.

[0061] After the modular unit is completely turned off, the system calculates and determines the number of water chillers that need to be turned on according to the current refrigeration demand and the performance parameters of the water chiller unit. Subsequently, the control system issues an instruction to gradually turn on the corresponding number of water chillers to take over the modular unit to meet the refrigeration demand.

[0062] After the water chiller unit starts working, the system continuously monitors its working load and operating status to ensure that the refrigeration demand is met. If it is found that the water chiller unit cannot meet the refrigeration demand or there are abnormal operations, the system can make adjustments according to the actual situation, such as increasing the number of turned-on water chillers, adjusting the operating parameters of the water chillers, etc.

[0063] Through the above steps, the refrigeration device can timely switch to the water chiller unit for refrigeration when the working load of the modular unit is too large, ensure that the refrigeration demand is met, and at the same time achieve efficient utilization of energy and stable operation of the equipment.

[0064] In some embodiments, after the step of controlling the refrigeration device to switch to the water chiller mode where the water chiller unit works alone, it further includes: Step S1320: Obtain the third working load of the water chiller unit.

[0065] Step S1330: Adjust the number of working water chillers in the water chiller unit according to the third working load.

[0066] Specifically, after the water chiller unit starts working, the system needs to continuously monitor and record the actual working load of the water chiller unit, that is, the third working load. The third working load reflects the actual situation of the current water chiller unit in meeting the refrigeration demand and is an important basis for adjusting the number of working water chillers.

[0067] The control system compares the obtained third working load with the rated working load of the water chiller unit and conducts a comprehensive analysis in combination with the current refrigeration demand and environmental conditions (such as temperature, humidity, etc.).

[0068] If the third working load is much lower than the rated working load of the water chiller unit and the refrigeration demand is stable, the system can gradually reduce the number of working water chillers to save energy and extend the equipment life. If the third working load is close to or exceeds the rated working load of the water chiller unit, or the refrigeration demand increases, the system needs to gradually increase the number of working water chillers to ensure that the refrigeration demand is met.

[0069] After adjusting the number of working water chillers, the system needs to continuously monitor the third working load and operating status of the water chiller unit. If new changes or abnormal situations are found (such as a certain water chiller fails, the refrigeration demand suddenly increases, etc.), the system needs to respond in a timely manner, readjust the number of working water chillers or take other measures.

[0070] Such as Figure 4As shown, in the process of controlling the number of water chillers in a water chiller unit (involving the control of water chillers, chilled water pumps, cooling water pumps, cooling towers, and valves, etc.), first, it is necessary to determine the interface and protocol for communicating with the PLC. Through programming or dedicated software, commands to shut down or start up the unit are sent to the actuator PLC. These commands are usually sent to specific registers or addresses of the PLC in a specific data format and encoding. After sending the commands, it is necessary to wait for and verify the response of the actuator PLC to ensure that the commands have been correctly executed. After adjusting the number of working water chillers, the host computer should continuously monitor the data reported by the PLC to ensure that the water chillers are operating as expected. Then, it is necessary to identify the logical part in the host computer code that controls the addition and subtraction of water chillers. Since the host computer code logic is regarded as a black box, the addition and subtraction machine logic code block can be copied using the deep copy method. Deep copy means creating a complete copy of the code block, including all variables and states. To test and adjust the addition and subtraction machine logic, the data reported by the actuator PLC to the host computer is required. In the simulated data, modify the data related to switching the unit on and off to trigger the execution of the addition and subtraction machine logic. By running the modified simulated data and the addition and subtraction machine logic code block, verify whether the logic is correctly executed, that is, whether the switching on and off of the water chillers are carried out as expected. After verification, integrate the modified logic or control commands into the actual host computer system to ensure that the number of working water chillers can be correctly controlled during actual operation. During actual operation, the operating status of the water chillers should be continuously monitored, and the control strategy or parameters should be adjusted according to the actual situation to optimize the working efficiency and performance of the water chillers.

[0071] Through the above steps, after the refrigeration device switches to the water chiller mode, it can adjust the number of working water chillers in the water chiller unit according to the real-time third working load, so as to ensure the efficient utilization of energy and the stable operation of the equipment while meeting the refrigeration demand.

[0072] In some embodiments, the step of comparing the first working load of the modular unit with the second rated load includes: Step S1308: Obtain the actual return water temperature of the water chiller unit.

[0073] Step S1309: Compare the obtained actual return water temperature with the set return water temperature to determine the magnitude of the first working load and the second rated load of the modular unit.

[0074] In this embodiment, in order to simplify the process of comparing loads, first obtain the actual return water temperature of the current water chiller unit. The actual return water temperature can be measured in real time by devices such as temperature sensors.

[0075] After obtaining the actual return water temperature, it needs to be compared with a preset desired return water temperature (set return water temperature). This set return water temperature is usually determined according to factors such as the design of the unit, operating conditions, and energy efficiency requirements.

[0076] During the comparison process, two parameters, namely "deviation value" and "third preset time", are introduced.

[0077] The deviation value is a permitted temperature deviation range. Due to various possible interference factors during actual operation, there is a certain deviation between the actual return water temperature and the set return water temperature. Introducing the deviation value can more flexibly determine whether the actual return water temperature exceeds the normal range.

[0078] The third preset time is a time threshold. Even if the actual return water temperature exceeds the range of the set return water temperature plus the deviation value, but if it is only for a short time, it may not be sufficient to indicate that the working load of the modular unit exceeds the rated load. Therefore, it is necessary to continuously observe for a certain period of time, which is the third preset time.

[0079] In the specific judgment process, if the actual return water temperature is greater than the set return water temperature plus the deviation value, and this situation lasts for the third preset time, then it can be considered that the first working load of the modular unit is greater than the second rated load.

[0080] In this way, it can be more accurately determined whether the working load of the modular unit exceeds the rated load, so as to take corresponding measures in a timely manner to ensure the stable operation of the unit.

[0081] Based on the above embodiments, in some embodiments, the control method of the refrigeration device further includes: Step S140: When the first working load of the water chiller unit is greater than the third rated load, control the refrigeration device to switch to the hybrid mode in which the modular unit and the water chiller unit work simultaneously.

[0082] The control system continuously and real-time monitors the operation data of the water chiller unit through sensors and monitoring devices, including the actual return water temperature, refrigeration capacity, energy consumption, etc., so as to calculate the first working load of the water chiller unit.

[0083] Compare the calculated first working load of the water chiller unit with the preset third rated load (i.e., the rated working load of the water chiller unit).

[0084] If the first working load is greater than the third rated load, and this situation lasts for a period of time (for example, exceeds the predetermined fourth preset time), it is determined that the working load of the water chiller unit is too large.

[0085] When it is determined that the working load of the water chiller unit is too large, the control system will issue an instruction to gradually turn on the modular unit that has been turned off before, and adjust the operation parameters of the modular unit and the water chiller unit to make them work simultaneously to form a hybrid mode.

[0086] In the hybrid mode, the control system dynamically adjusts the operating parameters of the modular unit and the water chiller unit according to the real-time cooling demand and the operating status of the equipment, such as the number of operating units, cooling capacity, energy consumption, etc., to achieve the optimal cooling effect and energy efficiency ratio.

[0087] In the hybrid mode, the system needs to continuously monitor the operating status and cooling effect of the modular unit and the water chiller unit, and make timely adjustments and optimizations according to the actual situation to ensure the stable operation and high energy efficiency of the refrigeration system.

[0088] Through the above steps, when the working load of the water chiller unit also exceeds its processing capacity, the refrigeration device can timely switch to the hybrid mode, and through the coordinated work of the modular unit and the water chiller unit, meet the cooling demand while ensuring the stable operation and high energy efficiency of the refrigeration system.

[0089] In some embodiments, after the step of controlling the refrigeration device to switch to the hybrid mode in which the modular unit and the water chiller unit work simultaneously, it further includes: Step S1410: Obtain the fourth working load of the modular unit and the water chiller unit.

[0090] Step S1420: Adjust the number of working modules in the modular unit and the number of working water chillers in the water chiller unit according to the fourth working load.

[0091] The control system real-time monitors the operating status of the modular unit and the water chiller unit through sensors and monitoring devices, including data such as operating time, energy consumption, cooling capacity, etc.

[0092] According to the real-time monitored data, the system calculates the current total working load of the modular unit and the water chiller unit, that is, the fourth working load. This usually involves comprehensive consideration and calculation of multiple parameters.

[0093] Compare the calculated fourth working load with the current cooling demand, and analyze their relationship. According to the analysis result, determine the adjustment strategy. If the fourth working load is too high, it may be necessary to increase the number of working modules or water chillers; if the fourth working load is too low, it may be necessary to reduce the number of working modules or water chillers.

[0094] According to the determined adjustment strategy, the system issues an instruction to gradually increase or decrease the number of working modules in the modular unit and the number of working water chillers in the water chiller unit. This usually involves operations such as starting, stopping or adjusting the operating parameters of multiple modules or water chillers.

[0095] After adjusting the number of working units, the system needs to continuously monitor the operating status and cooling effect of the modular unit and the water chiller unit, and make timely adjustments and optimizations according to the actual situation. This helps to ensure that the refrigeration system always operates in the optimal state, meets the cooling demand while achieving high energy efficiency.

[0096] Through the above steps, the system can dynamically adjust the number of module units and water chillers in the modular unit and water chiller unit according to the real-time workload and refrigeration demand, so as to ensure the stable operation and high energy efficiency of the refrigeration system.

[0097] For the control system of the refrigeration device according to the embodiment of the second aspect of the present invention, please refer to Figure 5 , including: An acquisition module 510, configured to acquire a first workload of the modular unit or the water chiller unit during the operation of the modular unit or the water chiller unit.

[0098] A first switching module 520, configured to control the refrigeration device to switch to a modular unit mode in which the modular unit operates alone when the first workload of the water chiller unit is less than a first rated load.

[0099] A second switching module 530, configured to control the refrigeration device to switch to a water chiller mode in which the water chiller unit operates alone when the first workload of the modular unit is greater than a second rated load.

[0100] Wherein, the first rated load is at least a part of the rated working load of a single water chiller, and the second rated load is the rated working load of the modular unit.

[0101] It should be noted that the above steps S110 to S130, as well as other steps, are only for convenience of expression and do not constitute a timing limitation on the steps of the method. There are detailed descriptions therein, and all the contents in the method are also applicable to the embodiments provided in the first aspect. Therefore, in order to avoid repeated description, the control system provided in the second aspect is not described in detail. Similarly, the contents in the above two aspects of the embodiments can be used to explain the contents of all the subsequent aspects of the embodiments. Therefore, the repeated contents in the subsequent embodiments are not described again. For the control system provided in the embodiment of the present invention, its technical effects correspond to those of the above method and will not be repeated here.

[0102] Figure 6The figure illustrates a schematic diagram of the physical structure of an electronic device, which may include: a processor 610, a communications interface 620, a memory 630, and a communication bus 640. Among them, the processor 610, the communication interface 620, and the memory 630 complete communication with each other through the communication bus 640. The processor 610 can call the logical instructions in the memory 630 to execute the control method of the refrigeration device. The method includes: during the operation of the modular unit or the water chiller unit, obtaining the first working load of the modular unit or the water chiller unit; when the first working load of the water chiller unit is less than the first rated load, controlling the refrigeration device to switch to the modular machine mode in which the modular unit works alone; when the first working load of the modular unit is greater than the second rated load, controlling the refrigeration device to switch to the water chiller mode in which the water chiller unit works alone.

[0103] In addition, when the logical instructions in the above-mentioned memory 630 are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-transitory computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs that can store program codes.

[0104] Furthermore, an embodiment of the present invention discloses a computer program product. The computer program product includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the control method provided by each of the above method embodiments. The control method includes: during the operation of the modular unit or the water chiller unit, obtaining the first working load of the modular unit or the water chiller unit; when the first working load of the water chiller unit is less than the first rated load, controlling the refrigeration device to switch to the modular machine mode in which the modular unit works alone; when the first working load of the modular unit is greater than the second rated load, controlling the refrigeration device to switch to the water chiller mode in which the water chiller unit works alone.

[0105] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A control method for a refrigeration device, characterized in that, The refrigeration device includes: a modular unit and a water chiller unit; the modular unit includes multiple modular machines, the water chiller unit includes multiple water chillers, the refrigerating capacity of the water chiller unit is greater than that of the modular unit, and the refrigerating capacity of the modular machine is greater than that of the water chiller; The control method of the refrigeration device includes: During the operation of the modular unit or the water chiller unit, obtaining the first working load of the modular unit or the water chiller unit; When the first working load of the water chiller unit is less than the first rated load, controlling the refrigeration device to switch to the modular machine mode in which the modular unit works alone; When the first working load of the modular unit is greater than the second rated load, controlling the refrigeration device to switch to the water chiller mode in which the water chiller unit works alone; Wherein, the first rated load is at least a part of the rated working load of a single water chiller, and the second rated load is the rated working load of the modular unit.

2. The control method of the refrigeration device according to claim 1, wherein The step of, when the first working load of the water chiller unit is less than the first rated load, controlling the refrigeration device to switch to the modular machine mode in which the modular unit works alone, includes: When the first working load of the water chiller unit is less than the first rated load within the first preset time, shutting down the water chiller unit and starting the modular unit.

3. The control method of the refrigeration device according to claim 2, characterized in that, After the step of controlling the refrigeration device to switch to the modular machine mode in which the modular unit works alone, it further includes: Obtaining the second working load of the modular unit; Adjusting the number of working modular machines in the modular unit according to the second working load.

4. The control method of the refrigeration device according to claim 1, characterized in that, The step of, when the first working load of the modular unit is greater than the second rated load, controlling the refrigeration device to switch to the water chiller mode in which the water chiller unit works alone, includes: When the first working load of the modular unit is greater than the second rated load within the second preset time, shutting down the modular unit and starting the water chiller unit.

5. The control method of the refrigeration device according to claim 4, characterized in that, After the step of controlling the refrigeration device to switch to the water chiller mode in which the water chiller unit works alone, it further includes: Obtaining the third working load of the water chiller unit; Adjusting the number of working water chillers in the water chiller unit according to the third working load.

6. The control method of the refrigeration device according to claim 4, characterized in that, The step of comparing the first working load of the modular unit with the second rated load includes: Obtaining the actual return water temperature of the water chiller unit; Comparing the obtained actual return water temperature with the set return water temperature to determine the magnitude of the first working load of the modular unit and the second rated load.

7. The control method of the refrigeration device according to any one of claims 1-6, characterized in that, When the first working load of the water chiller unit is greater than the third rated load, controlling the refrigeration device to switch to the hybrid mode in which the modular unit and the water chiller unit work simultaneously.

8. The control method of the refrigeration device according to claim 7, characterized in that, After the step of controlling the refrigeration device to switch to the hybrid mode in which the modular unit and the water chiller unit work simultaneously, it further includes: Obtaining the fourth working load of the modular unit and the water chiller unit; Adjusting the number of working modular machines in the modular unit and the number of working water chillers in the water chiller unit according to the fourth working load.

9. A control system for a refrigeration device, characterized in that, Includes: An obtaining module, configured to obtain the first working load of the modular unit or the water chiller unit during the operation of the modular unit or the water chiller unit; The first switching module is used to control the refrigeration device to switch to the modular unit mode in which the modular unit operates alone when the first working load of the water chiller unit is less than the first rated load; The second switching module is used to control the refrigeration device to switch to the water chiller mode in which the water chiller unit operates alone when the first working load of the modular unit is greater than the second rated load; Wherein, the first rated load is at least a part of the rated working load of a single water chiller, and the second rated load is the rated working load of the modular unit.

10. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the control method of the refrigeration device according to any one of claims 1 to 8.

11. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the control method of the refrigeration device according to any one of claims 1 to 8.

12. A computer program product, characterized in that, The computer program product includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the control method of the refrigeration device according to any one of claims 1 to 8.

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