CN112902516B - Control method of water chiller, water chiller and storage medium - Google Patents
Control method of water chiller, water chiller and storage medium Download PDFInfo
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- CN112902516B CN112902516B CN202110253603.2A CN202110253603A CN112902516B CN 112902516 B CN112902516 B CN 112902516B CN 202110253603 A CN202110253603 A CN 202110253603A CN 112902516 B CN112902516 B CN 112902516B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention discloses a control method of a water chiller, the water chiller and a computer readable storage medium, wherein the method comprises the following steps: acquiring the water inlet temperature and the water outlet temperature of the water chiller; determining a first operation power according to the inlet water temperature, and determining a second operation power according to the outlet water temperature; determining a target operating power according to the first operating power and the second operating power; and controlling the water chiller to operate according to the target operation power. The effect of improving the adaptability of the water chiller to the operating environment is achieved.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to a control method of a water chiller, the water chiller and a computer readable storage medium.
Background
In order to guarantee the working performance of workshop equipment, many workshop equipment are provided with an anti-overheating system. Such as a water-cooled anti-overheating system. In the water-cooling anti-overheating system, workshop equipment is communicated with a water cooler, so that the workshop equipment transfers heat to cooling water, then high-temperature cooling water absorbing heat energy flows back to the water cooler, and low-temperature cooling water is driven to the workshop equipment again after being cooled by the water cooler to complete heat exchange circulation.
In the related art, the water chiller generally operates at a preset fixed power, which results in energy waste when the refrigeration capacity of the water chiller is redundant, and leads to overhigh temperature of workshop equipment and unstable operation when the refrigeration capacity is insufficient. Therefore, the water chiller adopting the fixed power control scheme has the defect of poor adaptability of the operating environment.
The above is only for the purpose of assisting understanding of the technical solution of the present invention, and does not represent an admission that the above is the prior art.
Disclosure of Invention
The invention mainly aims to provide a control method of a water chiller, the water chiller and a computer readable storage medium, and aims to achieve the effect of improving the adaptability of the water chiller to the operating environment.
In order to achieve the above object, the present invention provides a control method of a water chiller, including the steps of:
acquiring the water inlet temperature and the water outlet temperature of the water chiller;
determining a first operation power according to the inlet water temperature, and determining a second operation power according to the outlet water temperature;
determining a target operating power according to the first operating power and the second operating power;
and controlling the water chiller to operate according to the target operating power.
Optionally, before the step of determining the target operating power according to the first operating power and the second operating power, the method further includes:
acquiring the outlet air temperature of the water chiller and/or the environmental temperature of the space where the water chiller is located;
determining a power regulating value according to the outlet air temperature and/or the environment temperature;
the step of determining a target operating power according to the first operating power and the second operating power and controlling the water chiller to operate according to the target operating power comprises the following steps:
determining an initial operating power according to the first operating power and the second operating power;
and determining the target operation power according to the initial operation power and the power adjusting value.
Optionally, the step of determining a power adjustment value according to the outlet air temperature and/or the ambient temperature includes:
acquiring a temperature difference value between the air outlet temperature and the environment temperature;
and determining the power adjusting value according to the temperature difference value.
Optionally, the step of determining a power adjustment value according to the outlet air temperature and/or the ambient temperature includes:
determining a first adjusting parameter according to the air outlet temperature, and determining a second adjusting parameter according to the environment temperature;
and determining the power adjusting value according to the first adjusting parameter and the second adjusting parameter.
Optionally, after the step of determining the target operating power according to the first operating power and the second operating power, the method further includes:
when the target power is larger than the maximum power of the water chiller, controlling the water chiller to operate at the maximum power;
and when the target power is less than or equal to the maximum power, executing the step of controlling the water chiller to operate according to the target operation power.
Optionally, a water outlet of the water chiller is provided with a first sub water outlet and a second sub water outlet, the first sub water outlet is communicated with a heat exchange water inlet of a heat exchange system, the second sub water outlet is communicated with a water inlet of at least one other water chiller, and when the target power is greater than the maximum power of the water chiller, after the step of controlling the water chiller to operate at the maximum power, the method further includes:
when a preset condition is met, adjusting the water outlet proportion of the first sub water outlet and the second sub water outlet;
when the preset condition is not met, controlling the first sub water outlet of the water chiller to be communicated and the second sub water outlet to be closed, wherein the preset condition comprises the following steps:
the water outlet temperature is higher than a first preset temperature, and the water inlet temperature is higher than a second preset temperature.
Optionally, before the step of adjusting the water outlet ratio of the first sub water outlet and the second sub water outlet, the method further includes:
when preset conditions are met, sending a cooperation request to other water coolers, wherein when the other water coolers receive the cooperation request, the power occupation proportion of the other water coolers is fed back to the water coolers;
receiving the power occupancy proportion;
the step of adjusting the water outlet proportion of the first sub water outlet and the second sub water outlet comprises the following steps:
and adjusting the water outlet proportion of the first sub water outlet and the second sub water outlet according to the power occupation proportion.
Optionally, after the step of controlling the water chiller to operate at the maximum power when the target power is greater than the maximum power of the water chiller, the method further includes:
and outputting alarm information.
In addition, in order to achieve the above object, the present invention further provides a water chiller, which includes a memory, a processor, and a control program of the water chiller that is stored in the memory and is executable on the processor, wherein the control program of the water chiller, when executed by the processor, implements the steps of the control method of the water chiller as described above.
In addition, in order to achieve the above object, the present invention also provides a computer readable storage medium having a control program of a water chiller stored thereon, the control program of the water chiller realizing the steps of the control method of the water chiller as described above when being executed by a processor.
According to the control method of the water chiller, the water chiller and the computer readable storage medium provided by the embodiment of the invention, the water inlet temperature and the water outlet temperature of the water chiller are firstly obtained, then the first operation power is determined according to the water inlet temperature, the second operation power is determined according to the water outlet temperature, the target operation power is further determined according to the first operation power and the second operation power, and the water chiller is controlled to operate according to the target operation power. The target running power can be comprehensively determined according to the water inlet temperature and the water outlet temperature, so that the running power of the water cooler can be dynamically adjusted, the refrigeration requirement can be met, and meanwhile, the phenomenon of refrigeration capacity redundancy is avoided. Therefore, the water chiller can operate at the power most suitable for the current environment in any environment, and the effect of improving the adaptability of the water chiller to the operating environment is achieved.
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 control method of a water chiller according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a water chiller according to an embodiment of the present invention;
FIG. 4 is a graph of inlet water temperature versus power according to an embodiment of the present invention;
FIG. 5 is a graph of outlet water temperature versus power according to an embodiment of the present invention;
FIG. 6 is a schematic flow chart illustrating another embodiment of a control method for a water chiller according to the present invention;
fig. 7 is a topological diagram of a cooling system according to an embodiment of the present invention.
The implementation, functional features and advantages of the present invention will be further described 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.
In the related art, the water chiller generally operates at a preset fixed power, so that energy is wasted when the refrigeration capacity of the water chiller is redundant, and the temperature of workshop equipment is too high and the operation is unstable when the refrigeration capacity is insufficient. Therefore, the water chiller adopting the fixed power control scheme has the defect of poor adaptability of the operating environment.
In order to solve the above-mentioned defects of the related art, the embodiment of the invention provides a control method of a water chiller, which mainly comprises the following steps:
acquiring the water inlet temperature and the water outlet temperature of the water chiller;
determining a first operation power according to the inlet water temperature, and determining a second operation power according to the outlet water temperature;
determining a target operating power according to the first operating power and the second operating power;
and controlling the water chiller to operate according to the target operation power.
The target running power can be comprehensively determined according to the water inlet temperature and the water outlet temperature, so that the running power of the water cooler can be dynamically adjusted, the refrigeration requirement can be met, and meanwhile, the phenomenon of refrigeration capacity redundancy is avoided. Therefore, the water chiller can run at the power most suitable for the current environment in any environment, and the effect of improving the adaptability of the water chiller to the running environment is achieved.
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 water chiller.
As shown in fig. 1, the terminal may include: a processor 1001, e.g. a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), a mouse, etc., and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., a WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 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, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a control program of a water chiller.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the processor 1001 may be configured to call a control program of the water chiller stored in the memory 1005 and perform the following operations:
acquiring the water inlet temperature and the water outlet temperature of the water chiller;
determining a first operation power according to the inlet water temperature, and determining a second operation power according to the outlet water temperature;
determining a target operating power according to the first operating power and the second operating power;
and controlling the water chiller to operate according to the target operation power.
Further, the processor 1001 may call the control program of the water chiller stored in the memory 1005, and further perform the following operations:
acquiring the outlet air temperature of the water chiller and/or the ambient temperature of the space where the water chiller is located;
determining a power regulation value according to the outlet air temperature and/or the environment temperature;
the step of determining a target operation power according to the first operation power and the second operation power and controlling the water chiller to operate according to the target operation power comprises the following steps:
determining an initial operating power according to the first operating power and the second operating power;
and determining the target operation power according to the initial operation power and the power adjusting value.
Further, the processor 1001 may call the control program of the water chiller stored in the memory 1005, and further perform the following operations:
acquiring a temperature difference value between the outlet air temperature and the environment temperature;
and determining the power adjusting value according to the temperature difference value.
Further, the processor 1001 may call the control program of the water chiller stored in the memory 1005, and also perform the following operations:
determining a first adjusting parameter according to the air outlet temperature, and determining a second adjusting parameter according to the environment temperature;
and determining the power adjusting value according to the first adjusting parameter and the second adjusting parameter.
Further, the processor 1001 may call the control program of the water chiller stored in the memory 1005, and also perform the following operations:
when the target power is larger than the maximum power of the water chiller, controlling the water chiller to operate at the maximum power;
and when the target power is less than or equal to the maximum power, executing the step of controlling the water chiller to operate according to the target operation power.
Further, the processor 1001 may call the control program of the water chiller stored in the memory 1005, and also perform the following operations:
when a preset condition is met, adjusting the water outlet proportion of the first sub water outlet and the second sub water outlet;
when the preset condition is not met, controlling the first sub water outlet of the water chiller to be communicated and the second sub water outlet to be closed, wherein the preset condition comprises the following steps:
the water outlet temperature is higher than a first preset temperature, and the water inlet temperature is higher than a second preset temperature.
Further, the processor 1001 may call the control program of the water chiller stored in the memory 1005, and further perform the following operations:
when a preset condition is met, sending a cooperation request to other water coolers, wherein when the other water coolers receive the cooperation request, the other water coolers feed back the power occupation proportion of the other water coolers;
receiving the power occupancy proportion;
the step of adjusting the water outlet ratio of the first sub water outlet and the second sub water outlet comprises the following steps:
and adjusting the water outlet proportion of the first sub water outlet and the second sub water outlet according to the power occupation proportion.
Further, the processor 1001 may call the control program of the water chiller stored in the memory 1005, and also perform the following operations:
and outputting alarm information.
Referring to fig. 2, in an embodiment of the control method of the water chiller of the present invention, the control method of the water chiller includes the following steps:
s10, acquiring the water inlet temperature and the water outlet temperature of the water chiller;
s20, determining a first operation power according to the water inlet temperature and a second operation power according to the water outlet temperature;
s30, determining target operation power according to the first operation power and the second operation power;
and S40, controlling the water chiller to operate according to the target operation power.
In order to guarantee the working performance of workshop equipment, many workshop equipment are provided with an anti-overheating system. Such as a water-cooled anti-overheating system. In the water-cooling anti-overheating system, workshop equipment is communicated with a water cooler, so that the workshop equipment transfers heat to cooling water, then high-temperature cooling water absorbing heat energy flows back to the water cooler, and low-temperature cooling water is driven to the workshop equipment again after being cooled by the water cooler to complete heat exchange circulation.
In the related art, the water chiller generally operates at a preset fixed power, which results in energy waste when the refrigeration capacity of the water chiller is redundant, and leads to overhigh temperature of workshop equipment and unstable operation when the refrigeration capacity is insufficient. Therefore, the water chiller adopting the fixed power control scheme has the defect of poor adaptability of the operating environment.
In order to improve environmental adaptability of the water chiller, the embodiment of the invention provides a control method of the water chiller applied to the water chiller, which aims to ensure refrigeration capacity of the water chiller so as to avoid waste of the refrigeration capacity while normal operation of workshop equipment is ensured, thereby achieving the effect of reducing energy consumption of the water chiller.
Referring to fig. 3, the water chiller 10 includes a water inlet 11 and a water storage port 12. And the water inlet 11 is used for being connected with a heat exchange water outlet of a workshop equipment heat exchange system. So that the high-temperature cooling liquid after heat exchange by the heat exchange system of the workshop appliance can flow into the water cooler 10 from the water inlet 11. After the water chiller 10 refrigerates and works the high-temperature coolant flowing into the water inlet 11, the temperature of the high-temperature coolant is reduced, and the high-temperature coolant further flows out of the water outlet 12 of the water chiller 10. The water outlet 12 is communicated with a heat exchange water inlet of a heat exchange system of workshop equipment. The low-temperature coolant flowing out of the water outlet 12 flows out of the heat exchange system of the workshop equipment so as to reduce the temperature of the workshop equipment and ensure the normal operation of the workshop equipment. In addition, temperature sensors (not shown) are disposed at the water inlet 11 and the water outlet 12. Wherein, set up the first temperature sensor user in water inlet 11 and detect the temperature of intaking of cold water machine 10, set up the second temperature sensor in delivery port 12 for detect the leaving water temperature of delivery port 12 of cold water machine 10.
In this embodiment, the water chiller can acquire the temperature of the inlet water through the detection value of the first temperature sensor, and acquire the temperature of the outlet water through the detection value of the second temperature sensor.
After the inlet water temperature and the outlet water temperature are obtained, a first operation power can be determined according to the inlet water temperature, and a second operation power can be determined according to the outlet water temperature. To better explain the present invention, the following specific schemes for determining the first operating power according to the inlet water temperature and the second operating power according to the outlet water temperature are illustrated by way of example:
in example 1, after the water inlet temperature is obtained, a temperature interval where the water inlet temperature is located is determined, and then a preset operating power associated with the temperature interval where the water inlet temperature is located is obtained as the first operating power. Similarly, after the water outlet temperature is obtained, the temperature interval where the water temperature is located can be determined, and then the preset operation power associated with the hot spring interval where the water outlet temperature is located is obtained and used as the second operation power. The interval length of the temperature interval can be set according to the equipment type of the water chiller, the power control precision requirement and the like. The preset operation power associated with different temperature intervals can also be set in a user-defined mode according to the user requirements.
Example 2, after the inlet water temperature and the outlet water temperature are obtained, an inlet water temperature-power curve as shown in fig. 4 and an outlet water temperature-power curve as shown in fig. 5 may be obtained. Then, determining first operating power according to the water inlet temperature obtained by aggregation and a water inlet temperature-power curve; and determining second operation power according to the outlet water temperature-power curve.
It should be noted that the inlet water temperature-power curve and the outlet water temperature-power curve are pre-stored in a storage medium and can be directly read by a water chiller.
Example 3, after the intake water temperature is obtained, the first power value may be determined according to the following equation:
P 1 ＝F 1 (t j )
wherein, F 1 Is the temperature t of the inlet water j And a first power value P 1 A predetermined functional relationship therebetween.
After the outlet water temperature is obtained, the second power value may be determined according to the following formula:
P 2 ＝F 2 (t c )
wherein, F 2 Is the temperature t of the inlet water c And a second power value P 2 A predetermined functional relationship therebetween.
Further, in this embodiment, after determining the first power value and the second power value, the target operating power may be determined according to the first power value and the second power value.
In particular, as an implementation, the first power value P is currently determined 1 And a second power value P 2 Then, determining the target operating power P may be based on a weighted summation, and determining the target operating power P may be according to the following formula:
P＝αP 1 +βP 2
wherein alpha and beta are respectively the first power value P 1 And a second power value P 2 And the sum of alpha and beta is equal to 1.
Optionally asIn another embodiment, the first power value P may be directly set 1 And a second power value P 2 As the target operating power.
In this embodiment, after the target operation power is currently determined, the water chiller may be controlled to operate according to the target operation power.
In the technical scheme disclosed in this embodiment, the water inlet temperature and the water outlet temperature of the water chiller are obtained first, then the first operating power is determined according to the water inlet temperature, the second operating power is determined according to the water outlet temperature, the target operating power is determined according to the first operating power and the second operating power, and the water chiller is controlled to operate according to the target operating power. The target running power can be comprehensively determined according to the water inlet temperature and the water outlet temperature, so that the running power of the water cooler can be dynamically adjusted, the refrigeration requirement can be met, and meanwhile, the phenomenon of refrigeration capacity redundancy is avoided. Therefore, the water chiller can operate at the power most suitable for the current environment in any environment, and the effect of improving the adaptability of the water chiller to the operating environment is achieved.
Further, referring to fig. 6, in another embodiment, before the step S30, the method further includes:
s40, acquiring the outlet air temperature of the water chiller and/or the ambient temperature of the space where the water chiller is located;
and S50, determining a power adjusting value according to the outlet air temperature and/or the environment temperature.
In this embodiment, the cold water fan is provided with the air exit, the air exit is provided with third temperature sensor. And the third temperature sensor is used for detecting the air outlet temperature of the air outlet. In addition, the water chiller is also provided with a network interface and/or a fourth temperature sensor for detecting the ambient temperature in the space where the water chiller is located. The water chiller can acquire the ambient temperature in the space where the water chiller is located from the server or other terminals through the network interface and/or directly detect the ambient temperature in the space where the water chiller is located through the fourth temperature detection sensor.
Optionally, in an embodiment, after the air outlet temperature or the ambient temperature is currently obtained, the pre-stored power adjustment value associated with the temperature interval may be directly obtained according to the temperature interval where the air outlet temperature or the ambient temperature is located.
Optionally, in another embodiment, after the air outlet temperature and the ambient temperature are currently obtained, a temperature difference value between the air outlet temperature and the ambient temperature may be obtained. The power adjustment value is then determined based on the temperature difference value.
For example, a value interval where the temperature difference value is located may be determined, and then a pre-stored adjustment value associated with the value interval may be obtained as the power adjustment value. Alternatively, the power adjustment value Δ P may be determined based on the temperature difference value Δ t according to the following formula:
△P＝F 3 (△t)
wherein, F 3 Is a pre-stored functional relationship between the temperature difference value delta t and the power adjustment value delta P.
Referring to fig. 6, the step S30 includes the steps of:
step S31, determining initial operation power according to the first operation power and the second operation power;
and S32, determining the target operation power according to the initial operation power and the power regulation value.
In this embodiment, after determining the power adjustment value, the initial operating power may be determined according to the first operating power and the second operating power. Wherein the initial operating power may be set as a weighted sum, and/or an average of the first operating power and the second operating power. After the initial operating power is currently determined, the target operating power may be determined based on the initial operating power and the power adjustment value according to the following manner:
firstly, if the power regulation value is a specific regulation increment, the target power P is the initial operation power P c And the sum of the power adjustment value Δ P. I.e. P = P c +△P
Secondly, the first step of the method comprises the following steps of,when the power adjusting value is an adjusting coefficient, the target power P is the initial operating power P c And the power regulation value DeltaP, i.e. P =DeltaP.P c △P。
In this embodiment, a power adjustment value is determined according to the outlet air temperature and/or the ambient temperature, then an initial operating power is determined according to the first operating power and the second operating power, and the target operating power is determined according to the initial operating power and the power adjustment value, wherein the ambient temperature can quantify an environmental impact degree, and the outlet air temperature can quantify an operating state of the water chiller, so that the purpose of comprehensively adjusting the operating power of the water chiller by considering the environmental impact and the state impact is achieved, and thus, the environmental adaptability of the water chiller is further improved.
Optionally, in yet another embodiment, after the step of determining the target operating power according to the first operating power and the second operating power, the water chiller may be controlled to operate at the maximum power when the target power is greater than the maximum power of the water chiller, and the step S40 may be performed when the target power is less than or equal to the maximum power.
Optionally, the water chiller is disposed in a cooling system. Referring to fig. 7, the cooling system includes a first water chiller and a second water chiller. The first and second water coolers are not limited to the present invention, and are provided for convenience of description. Hereinafter, the present invention will be explained with reference to the first water chiller as an actuator in a view point of the first water chiller. The other water coolers than the first water cooler will be described as the second water cooler.
In the cooling system, the water cooler is provided with a water outlet and a water inlet, and the water outlet is provided with a first sub water outlet and a second sub water outlet. The first sub water outlet and the second sub water outlet can be independently in a conducting or closed state. Referring to fig. 7, the cooling system includes a first water chiller, a second water chiller, a workshop appliance heat exchange system 1, and a workshop appliance heat exchange system 2.
And a first sub water outlet of the first water cooler is communicated with a heat exchange water inlet of the workshop appliance heat exchange system 1, and a second sub water outlet of the first water cooler is communicated with a water inlet of the second water cooler. When the first sub water outlet is communicated and the second sub water outlet is closed, all cooling liquid flowing through the water outlet of the first water chiller flows into the heat exchange system 1 of the workshop equipment, and when the first sub water outlet is closed and the second sub water outlet is communicated, all cooling liquid flowing through the water outlet of the first water chiller flows into the second water chiller. When the first sub water outlet is communicated and the second sub water outlet is communicated, all the cooling liquid flowing through the water outlet of the first water cooler flows into the second water cooler and part of the flow path workshop equipment heat exchange system 1. Optionally, the first sub water outlet and the second sub water outlet may further adjust a conduction ratio to adjust a water outlet ratio of the first sub water outlet and the second sub water outlet.
Further, in this embodiment, after the step of controlling the water chiller to operate at the maximum power when the target power is greater than the maximum power of the water chiller, when a preset condition is met, the water outlet ratio of the first sub water outlet and the second sub water outlet may be adjusted, and when the preset condition is not met, the first sub water outlet of the water chiller is controlled to be turned on, and the second sub water outlet is controlled to be turned off, where the preset condition includes: the water outlet temperature is higher than a first preset temperature, and the water inlet temperature is higher than a second preset temperature. The first preset temperature and the second preset temperature are experience values set by a user, and the first preset temperature and the second preset temperature are not equal to each other.
Specifically, when satisfying the preset condition, can judge that the cold water machine also can't satisfy the refrigeration demand even if with the maximum power operation, consequently, can control first sub-delivery port and close, the sub-delivery port of second is opened to make the coolant liquid after the cold water machine cooling, and then the second cold water machine carries out the secondary cooling, then with the coolant liquid after the secondary cooling, from the delivery port inflow workshop appliance heat transfer system 1 of second cold water machine. So as to ensure the cooling effect of the heat exchange system 1 of the workshop appliance. Or the first sub water outlet and the second sub water outlet are controlled to be communicated, so that part of the cooling liquid flows into the heat exchange system 1 of the workshop equipment after being cooled by the second water chiller for the second time.
Optionally, in some embodiments, before the step of adjusting the water outlet ratio of the first sub water outlet and the second sub water outlet, a cooperation request may be sent to the other water coolers when a preset condition is satisfied, where the other water coolers obtain the current operating power of the other water coolers and the maximum rated power of the other water coolers when receiving the cooperation request, and then calculate the power occupancy ratio of the other water coolers according to the current operating power and the maximum rated power of the other water coolers, so as to feed back the power occupancy ratio of the other water coolers to the water coolers, and receive the power occupancy ratio. And then adjusting the water outlet proportion of the first sub water outlet and the second sub water outlet according to the power occupation proportion. The amount of the cooling liquid flowing into the second water chiller to be cooled for the second time can be determined according to the power occupation ratio. A large amount of coolant liquid that avoids first cold water machine to flow out flows into the second cold water machine, leads to the unable control by temperature change demand that satisfies workshop appliance heat exchange system 1 of second cold water machine. The smaller the power occupation proportion of the second water chiller is, the larger the amount of the cooling liquid flowing into the first water chiller from the water outlet is.
It is understood that, when a plurality of second water coolers are provided, a water cooler having redundant cooling capacity may be selected as a target water cooler according to a power occupancy ratio, and then the coolant flowing out of the first water cooler may be controlled to flow only into the target water cooler.
When there are a plurality of target water coolers, the ratio of the coolant flowing into each target water cooler may be determined based on the power consumption ratio.
Optionally, after the step of controlling the water chiller to operate at the maximum power when the target power is greater than the maximum power of the water chiller, the method further includes: and outputting alarm information. So as to prompt the user that the first water chiller is in an overload running state.
In the technical scheme disclosed in the embodiment, the environmental adaptability of the water chiller is further improved, and the distribution rationality of the refrigerating capacity of the water chiller is improved.
In addition, an embodiment of the present invention further provides a water chiller, where the water chiller includes a memory, a processor, and a control program of the water chiller, the control program of the water chiller is stored in the memory and is executable on the processor, and when the control program of the water chiller is executed by the processor, the steps of the control method of the water chiller according to the above embodiments are implemented.
In addition, an embodiment of the present invention further provides a computer-readable storage medium, where a control program of a water chiller is stored, and when the control program of the water chiller is executed by a processor, the steps of the control method of the water chiller 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 phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of other like elements in a process, method, article, or system comprising 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 above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such 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 instructions for causing a water chiller 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 (9)
1. The control method of the water chiller is characterized by being applied to the water chiller and comprising the following steps of:
acquiring the water inlet temperature and the water outlet temperature of the water chiller;
determining a first operation power according to the water inlet temperature, and determining a second operation power according to the water outlet temperature;
acquiring the outlet air temperature of the water chiller and/or the environmental temperature of the space where the water chiller is located;
determining a power regulating value according to the outlet air temperature and/or the environment temperature;
taking a weighted sum of the first operating power and the second operating power as an initial operating power;
determining target operation power according to the initial operation power and the power adjusting value; when the power adjustment value is a specific adjustment increment, the target power P = Pc +. DELTA.P, pc is the initial operating power, and Δ P is the power adjustment value, and when the power adjustment value is an adjustment coefficient, the target power P =ΔP · Pc Δ P, pc is the initial operating power, and Δ P is the power adjustment value;
and controlling the water chiller to operate according to the target operating power.
2. The method of claim 1, wherein the step of determining a power adjustment value based on the outlet air temperature and/or the ambient temperature comprises:
acquiring a temperature difference value between the air outlet temperature and the environment temperature;
and determining the power adjusting value according to the temperature difference value.
3. The method of claim 1, wherein the step of determining a power adjustment value based on the outlet air temperature and/or the ambient temperature comprises:
determining a first adjusting parameter according to the air outlet temperature, and determining a second adjusting parameter according to the environment temperature;
and determining the power adjusting value according to the first adjusting parameter and the second adjusting parameter.
4. The method for controlling a water chiller according to claim 1, wherein after the step of determining the target operating power based on the initial operating power and the power adjustment value, the method further comprises:
when the target power is larger than the maximum power of the water chiller, controlling the water chiller to operate at the maximum power;
and when the target power is less than or equal to the maximum power, executing the step of controlling the water chiller to operate according to the target operation power.
5. The method for controlling the water chiller according to claim 4, wherein a water outlet of the water chiller is provided with a first sub water outlet and a second sub water outlet, the first sub water outlet is communicated with a heat exchange water inlet of a heat exchange system, the second sub water outlet is communicated with a water inlet of at least one other water chiller, and when the target power is higher than the maximum power of the water chiller, after the step of controlling the water chiller to operate at the maximum power, the method further comprises:
when a preset condition is met, adjusting the water outlet proportion of the first sub water outlet and the second sub water outlet;
when the preset condition is not met, controlling the first sub water outlet of the water chiller to be communicated, and controlling the second sub water outlet to be closed, wherein the preset condition comprises the following steps:
the water outlet temperature is higher than a first preset temperature, and the water inlet temperature is higher than a second preset temperature.
6. The method for controlling a water chiller according to claim 5, wherein the step of adjusting the ratio of the water discharged from the first sub water outlet to the water discharged from the second sub water outlet is preceded by the steps of:
when preset conditions are met, sending a cooperation request to other water coolers, wherein when the other water coolers receive the cooperation request, the power occupation proportion of the other water coolers is fed back to the water coolers;
receiving the power occupancy proportion;
the step of adjusting the water outlet proportion of the first sub water outlet and the second sub water outlet comprises the following steps:
and adjusting the water outlet proportion of the first sub water outlet and the second sub water outlet according to the power occupation proportion.
7. The method of controlling a water chiller according to claim 4, wherein after the step of controlling the water chiller to operate at the maximum power when the target power is greater than the maximum power of the water chiller, the method further comprises:
and outputting alarm information.
8. A water chiller, comprising: a memory, a processor and a control program of a water chiller stored on the memory and operable on the processor, the control program of the water chiller when executed by the processor implementing the steps of the control method of the water chiller according to any one of claims 1 to 7.
9. A computer-readable storage medium, characterized in that a control program of a water chiller is stored thereon, which when executed by a processor, realizes the steps of the control method of the water chiller according to any one of claims 1 to 7.
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| CN106403175B (en) * | 2016-09-12 | 2019-03-26 | 珠海格力电器股份有限公司 | The control method and water cooler of water cooler |
| CN107606730B (en) * | 2017-09-29 | 2020-07-07 | 北京百度网讯科技有限公司 | Method and device for determining a chiller for cooling a data center |
| CN108444159B (en) * | 2018-03-20 | 2019-11-08 | 珠海格力电器股份有限公司 | Air conditioning control method and device, air-conditioning |
| CN109631376B (en) * | 2018-11-27 | 2022-01-28 | 珠海格力电器股份有限公司 | Screw type water chilling unit and control method and system thereof |
| CN112254300B (en) * | 2020-09-30 | 2021-09-21 | 青岛海尔空调器有限总公司 | Wall-mounted air conditioner and control method thereof |
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