CN110173950B - Cooling circulation system and control method thereof - Google Patents
Cooling circulation system and control method thereof Download PDFInfo
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- CN110173950B CN110173950B CN201910554847.7A CN201910554847A CN110173950B CN 110173950 B CN110173950 B CN 110173950B CN 201910554847 A CN201910554847 A CN 201910554847A CN 110173950 B CN110173950 B CN 110173950B
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- 238000001816 cooling Methods 0.000 title claims abstract description 208
- 238000000034 method Methods 0.000 title claims abstract description 92
- 239000003507 refrigerant Substances 0.000 claims abstract description 329
- 230000008569 process Effects 0.000 claims abstract description 49
- 230000017525 heat dissipation Effects 0.000 claims abstract description 40
- 239000002826 coolant Substances 0.000 claims description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 238000004891 communication Methods 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 238000005057 refrigeration Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 14
- 238000005507 spraying Methods 0.000 description 11
- 239000007789 gas Substances 0.000 description 9
- 230000001502 supplementing effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000007710 freezing Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 101100295776 Drosophila melanogaster onecut gene Proteins 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D16/00—Devices using a combination of a cooling mode associated with refrigerating machinery with a cooling mode not associated with refrigerating machinery
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The cooling circulation system comprises a refrigerant box, a closed heat dissipation device and a refrigerator, wherein the cooling circulation system is communicated with a refrigerant inlet and a refrigerant outlet of a process device; the control method comprises the following steps: step S1, acquiring the temperature of the refrigerant in a refrigerant box, the cold inlet temperature at a refrigerant inlet and the cold outlet temperature at a refrigerant outlet; step S2, comparing the refrigerant temperature, the cold inlet temperature and the cold outlet temperature, and if the cold inlet temperature is less than the refrigerant temperature is less than the cold outlet temperature, executing step S3; s3, controlling the refrigerant discharged from the refrigerant outlet to be led into the closed heat dissipation device; s4, controlling the refrigerant discharged by the closed heat dissipation device to be introduced into the refrigerant box; s5, controlling the refrigerant discharged from the refrigerant box to be introduced into an evaporator of the refrigerator; and S6, controlling the refrigerant discharged by the evaporator to be introduced into the refrigerant inlet. The system and the control method provided by the invention can reduce the energy consumption of the system, and can overcome the attenuation of the performance of the refrigerator to a greater extent so as to ensure the refrigeration efficiency of the refrigerator.
Description
Technical Field
The invention relates to the technical field of cooling circulation, in particular to a cooling circulation system and a control method thereof.
Background
In industrial and information industry processes, in order to maintain the process flow continuously, a cooling circulation system is required to take the task of bringing and housing "waste heat" generated in industrial and information industry manufacturing equipment (process side).
The cooling circulation system generally comprises a natural cooling tower and a refrigerator, the existing control scheme is a cut-off method, simple judgment is carried out according to the ambient temperature, when the ambient temperature is low, the natural cooling tower is directly used for selling the waste heat of the process side, and when the ambient temperature is high, the refrigerator is used for processing the waste heat of the process side, and the control method is too coarse and has more waste of energy.
Therefore, how to provide a solution to overcome the above-mentioned drawbacks is still a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a cooling circulation system and a control method thereof, which can reduce the energy consumption of the system, overcome the attenuation of the performance of a refrigerator to a large extent and ensure the refrigeration efficiency of the refrigerator.
In order to solve the technical problems, the invention provides a control method of a cooling circulation system, wherein the cooling circulation system comprises a refrigerant box, a closed heat dissipation device and a refrigerator, and the cooling circulation system is communicated with a refrigerant inlet and a refrigerant outlet of a process device; the control method comprises the following steps: step S1, acquiring the temperature of the refrigerant in the refrigerant box, the cold inlet temperature at the refrigerant inlet and the cold outlet temperature at the refrigerant outlet; step S2, comparing the refrigerant temperature, the cold inlet temperature and the cold outlet temperature, and if the cold inlet temperature is less than the refrigerant temperature is less than the cold outlet temperature, executing step S3; s3, controlling the refrigerant discharged from the refrigerant outlet to be introduced into the closed heat dissipation device; s4, controlling the refrigerant discharged by the closed heat dissipation device to be introduced into the refrigerant box; s5, controlling the refrigerant discharged by the refrigerant box to be introduced into an evaporator of the refrigerator; and S6, controlling the refrigerant discharged by the evaporator to be introduced into the refrigerant inlet.
According to the control method provided by the invention, under the first condition that the cooling temperature is less than the cooling temperature, the closed type heat radiating device and the refrigerator are connected in series to cool the process side in a combined cooling mode, so that the closed type heat radiating device can fully utilize natural cooling resources due to the fact that a part of refrigeration effect is exerted, further, the work load of the refrigerator can be reduced, the refrigerator can work in a lower load state, the refrigerator can be kept in a high-efficiency working state for a long time, meanwhile, the refrigerator can work to make up for the defect of natural cooling, and the cooling requirement of the process side is met.
Compared with the control scheme of one-cut in the prior art, the control method provided by the invention can be more suitable for the environment with larger temperature change, is finer in control and is more beneficial to saving energy.
In addition, the control method provided by the invention is based on the closed type heat radiation device, compared with the traditional open type cooling tower, the refrigerant in the closed type heat radiation device is not contacted with air, the problems of aeration, external impurities entering and the like are avoided, the generation of impurities such as scale and the like in the circulation process of the refrigerant can be reduced, the attenuation of the performance of the refrigerator can be overcome to a greater extent, and the working efficiency of the refrigerator is ensured, and the natural cooling device in the embodiment can be connected with the refrigerator in series; meanwhile, because the scale is less generated, the pickling times can be reduced, and the energy consumption caused by the washing machine can be reduced.
Optionally, the step S3 includes: step S31, controlling the refrigerant discharged from the refrigerant outlet to be introduced into a condenser of the refrigerator; and S32, controlling the refrigerant discharged by the condenser to be introduced into the closed heat dissipation device.
Optionally, the refrigerant tank includes a first cold tank and a second cold tank, the step S1 of obtaining the refrigerant temperature of the refrigerant tank is specifically obtaining the refrigerant temperature of the refrigerant in the first cold tank, and the step S5 of controlling the refrigerant discharged from the first cold tank to be led into the evaporator of the refrigerator is specifically performed; the step S32 includes: step S321, controlling the refrigerant discharged by the condenser to be introduced into the second cold box; and S322, controlling the refrigerant discharged by the second cold box to be introduced into the closed heat dissipation device.
Optionally, the refrigerant tank further includes a third cold tank, and the step S6 includes: step S61, controlling the refrigerant discharged by the evaporator to be introduced into the third cold box; and step S62, controlling the refrigerant discharged by the third cold box to be introduced into the refrigerant inlet.
Optionally, in step S322, the refrigerant discharged from the second cooling tank is further subjected to a scale removal treatment before being introduced into the closed heat dissipating device; in step S62, the refrigerant discharged from the third cooling tank is also subjected to a scale removal treatment before being introduced into the refrigerant inlet.
Optionally, the step S2 further includes: if the temperature of the refrigerant is not less than the cooling temperature, executing the step S7; and S7, controlling the refrigerant discharged from the refrigerant outlet to be introduced into an evaporator of the refrigerator, and then executing the step S6.
Optionally, the refrigerant tank includes a first cold tank and a second cold tank, and the step S1 of obtaining the temperature of the refrigerant in the refrigerant tank specifically includes obtaining the temperature of the refrigerant in the first cold tank; the step S2 further includes: if the temperature of the refrigerant is not less than the cooling temperature, executing the step S8; s8, controlling the refrigerant discharged by the first cold box to be introduced into a condenser of the refrigerator; and S9, controlling the refrigerant discharged by the condenser to be introduced into the closed heat dissipation device, and then, refluxing the refrigerant to the first cold box.
Optionally, the step S9 includes: step S91, controlling the refrigerant discharged by the condenser to be introduced into the second cold box; step S92, controlling the refrigerant discharged by the second cooling box to be introduced into the closed heat dissipation device; and step S93, controlling the refrigerant discharged by the closed heat radiating device to be introduced into the first cold box.
Optionally, the step S2 further includes: if the refrigerant temperature=the cooling temperature, executing step S10; and S10, controlling the refrigerant discharged from the refrigerant outlet to be introduced into the closed heat dissipation device, and then introducing the refrigerant into the refrigerant inlet.
Optionally, the refrigerant tank includes a first cold tank, a second cold tank and a third cold tank, and the first cold tank is communicated with the third cold tank, and the step S1 of obtaining the temperature of the refrigerant in the refrigerant tank is specifically obtaining the temperature of the refrigerant in the first cold tank; the step S10 includes: step S101, controlling the refrigerant discharged from the refrigerant outlet to be introduced into the second cold box; step S102, controlling the refrigerant discharged by the second cold box to be introduced into the closed heat dissipation device; step S103, controlling the refrigerant discharged by the closed heat dissipation device to be introduced into the first cold box; and step S104, controlling the refrigerant discharged by the third cold box to be introduced into the refrigerant inlet.
Optionally, before the step S1, the method further includes: and S0, controlling the closed heat dissipation device, the refrigerator and the process device to perform liquid injection, air exhaust and cleaning.
The invention also provides a cooling circulation system which comprises a refrigerant box, a closed heat dissipation device and a refrigerator, wherein the cooling circulation system is communicated with a refrigerant inlet and a refrigerant outlet of the process device; the cooling system further comprises a first temperature sensor, a second temperature sensor and a third temperature sensor, wherein the first temperature sensor is used for monitoring the temperature of the cooling agent in the cooling agent box, the second temperature sensor is arranged at the cooling agent inlet and used for monitoring the cooling temperature in the cooling agent outlet, and the third temperature sensor is arranged at the cooling agent outlet and used for monitoring the cooling temperature in the cooling agent outlet; the refrigerator further comprises a controller, wherein the controller is in signal connection with the first temperature sensor and the second temperature sensor, and the controller is suitable for controlling the refrigerant discharged from the refrigerant outlet to be introduced into the closed type heat radiating device, the refrigerant discharged from the closed type heat radiating device to be introduced into the evaporator of the refrigerator and the refrigerant discharged from the evaporator to be introduced into the refrigerant inlet under the first condition that the cooling temperature is less than the cooling temperature.
Since the foregoing control method has the technical effects as described above, the cooling circulation system corresponding to the control method also has similar technical effects, and thus will not be described herein.
Optionally, the refrigerant tank comprises a first cold tank and a second cold tank, and the first temperature sensor is arranged at a discharge outlet of the first cold tank and is used for monitoring the temperature of the refrigerant of the first cold tank; the refrigerator also comprises a four-way valve, a first port and a second port of the four-way valve are respectively connected with the refrigerant outlet and the inlet of the condenser of the refrigerator, the outlet of the condenser is communicated with the second cold box, and the second cold box is communicated with the closed heat dissipation device through a second driving pump; the controller is in signal connection with the four-way valve and is suitable for controlling the first port and the second port of the four-way valve to be communicated under the first condition.
Optionally, the refrigerant box further comprises a third cold box, an outlet of the closed heat dissipation device is communicated with the first cold box, and a first driving pump is further connected to the outlet of the first cold box; the first port and the second port of the first three-way valve are respectively connected with the outlet of the first driving pump and the inlet of the evaporator; the controller is in signal connection with the first three-way valve and is suitable for controlling the first port and the second port of the first three-way valve to be communicated under the first condition.
Optionally, an outlet of the evaporator is communicated with the third cold box, and the third cold box is also communicated with the refrigerant inlet through a third driving pump; the controller is also connected with the third driving pump in a signal way and is suitable for adjusting the flow of the third driving pump according to the cooling temperature.
Optionally, descaling devices are arranged between the second cooling box and the closed heat dissipation device and between the third cooling box and the refrigerant inlet.
Optionally, the third port of the four-way valve is further connected to the inlet of the evaporator, and the controller is further adapted to control the first port and the third port of the four-way valve to be communicated under the second condition that the temperature of the refrigerant is greater than or equal to the cool-out temperature.
Optionally, the third port of the first three-way valve is further connected to the inlet of the condenser, and the controller is further adapted to control the first port and the third port of the first three-way valve to communicate under the second condition.
Optionally, the fourth port of the four-way valve is further connected to the third cold box, and the controller is further adapted to control the first port and the fourth port of the four-way valve to be communicated under the third condition that the temperature of the refrigerant is equal to the cooling temperature; in the third condition, the controller is further adapted to adjust the flow rate of the second drive pump in accordance with an ambient temperature.
Optionally, the device further comprises a second three-way valve, wherein among three ports of the second three-way valve, a first port is connected with the first cold box, a second port is connected with the second cold box, a third port is communicated with the closed heat dissipation device, and the controller is in signal connection with the second three-way valve.
Optionally, the water supply pipeline is further provided with a water softening device, a fourth driving pump and a third three-way valve, one of two output ports of the third three-way valve is connected with the second cold box, the other one of the two output ports is connected with a spraying part in the closed heat dissipation device, and the controller is in signal connection with the third three-way valve.
Drawings
FIG. 1 is a schematic flow chart of a control method of a cooling circulation system according to the present invention under a first condition;
FIG. 2 is a schematic flow chart of a control method of a cooling circulation system according to the present invention under a second condition;
FIG. 3 is a schematic flow chart of a control method of the cooling circulation system according to the present invention under a third condition;
FIG. 4 is a schematic view of the coolant circulation of the cooling circulation system according to the present invention when operating under a first condition;
FIG. 5 is a schematic view of the coolant circulation of the cooling circulation system according to the present invention when operating under a second condition;
FIG. 6 is a schematic view of the coolant circulation of the cooling circulation system according to the present invention when operating under a third condition;
FIG. 7 is a schematic view of the coolant circulation of the cooling circulation system according to the present invention when the cooling circulation system is operated under a third condition and spraying is stopped;
FIG. 8 is a schematic view of the coolant circulation of the cooling circulation system of the present invention when the cooling circulation system is operated under a third condition, spraying is stopped, and the second driving pump is operated at a reduced flow rate;
FIG. 9 is a schematic diagram of the coolant circulation of the cooling circulation system according to the present invention when the cooling circulation system is operated under a third condition and a closed heat sink is turned off;
FIG. 10 is a schematic diagram of the cooling circulation system according to the present invention during the injection, venting and cleaning of process units;
FIG. 11 is a schematic diagram of the cooling circulation system according to the present invention during the injection, exhaust and cleaning of the closed heat sink;
FIG. 12 is a schematic view of a cooling circulation system according to the present invention for filling, discharging and cleaning a condenser of a refrigerator;
Fig. 13 is a schematic diagram showing the circulation of the refrigerant in the cooling circulation system according to the present invention when the evaporator of the refrigerator is filled with liquid, exhausted and cleaned.
The reference numerals in fig. 1-13 are illustrated as follows:
1 a refrigerant tank, 11 a first cold tank, 111 a first driving pump, 12 a second cold tank, 121 a second driving pump, 13 a third cold tank, 131 a third driving pump;
2, a closed heat dissipation device and a 21 spraying component;
3 a refrigerator, a 31 evaporator and a 32 condenser;
4a process device, a 41 refrigerant inlet and a 42 refrigerant outlet;
5 a water supplementing pipeline, 51 a water softening device and 52 a fourth driving pump;
6 a descaling device;
an SV0 four-way valve, an SV1 first three-way valve, an SV2 second three-way valve, an SV3 third three-way valve, an SV4 cleaning valve and an SV5 anti-freezing valve;
T 1 refrigerant temperature, T 2 cool-in temperature, T 3 cool-out temperature.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
The terms "first," "second," and the like herein are merely used for convenience in describing two or more structures or components having the same or similar structure, and do not denote any particular limitation of the order.
Referring to fig. 1 to 13, fig. 1 is a schematic flow chart of a control method of a cooling circulation system according to the present invention under a first condition, fig. 2 is a schematic flow chart of a control method of a cooling circulation system according to the present invention under a second condition, fig. 3 is a schematic flow chart of a control method of a cooling circulation system according to the present invention under a third condition, fig. 4 is a schematic flow chart of a coolant when the cooling circulation system according to the present invention is operated under the first condition, fig. 5 is a schematic flow chart of a coolant when the cooling circulation system according to the present invention is operated under the second condition, fig. 6 is a schematic flow chart of a coolant when the cooling circulation system according to the present invention is operated under the third condition and spraying is stopped, fig. 8 is a schematic diagram of a coolant circulation when the cooling circulation system provided by the invention operates under a third condition, spraying is stopped, and the second driving pump operates under a reduced flow, fig. 9 is a schematic diagram of a coolant circulation when the cooling circulation system provided by the invention operates under a third condition, and a closed heat sink is turned off, fig. 10 is a schematic diagram of a coolant circulation when the cooling circulation system provided by the invention injects liquid, exhausts gas, cleans the process device, fig. 11 is a schematic diagram of a coolant circulation when the cooling circulation system provided by the invention injects liquid, exhausts gas, cleans the closed heat sink, fig. 12 is a schematic diagram of a coolant circulation when the cooling circulation system provided by the invention injects liquid, exhausts gas, cleans the condenser of the refrigerator, and fig. 13 is a schematic diagram of a coolant circulation when the cooling circulation system provided by the invention re-injects liquid, exhausts gas, cleans the evaporator of the refrigerator.
Example 1
For the process side, once the process device 4 determines that the inlet cooling temperature T 2 of the refrigerant inlet 41 and the outlet cooling temperature T 3 of the refrigerant outlet 42 are both determined, in an exemplary scheme, T 2 may be 12 ℃, T 3 may be 18 ℃, if the ambient temperature is low, the cooling requirement may be met by adopting only a natural cooling scheme, but if the ambient temperature is high, efficient cooling by adopting the refrigerator 3 is required.
In the traditional scheme, once natural cooling cannot meet the requirement, the refrigerator 3 is fully adopted for cooling, however, the ambient temperature is not fixed, in a large area of China, the temperature difference between day and night and the temperature difference between morning and evening are large, the temperatures in the morning and evening are likely to be only a few degrees, the temperature in noon can reach thirty degrees, if the cold source (natural cold source and refrigerator 3) is switched by one knife, the utilization of the natural cold source is likely to be incomplete, and the cooling requirement of the process side cannot be met.
To this end, the present embodiment provides a control method of a cooling circulation system, and the structure of the cooling circulation system may refer to fig. 4, which includes a refrigerant tank 1, a closed heat dissipation device 2, and a refrigerator 3, where the refrigerant tank 1 is used to store a refrigerant, and the refrigerant may specifically be a cooling medium such as cooling water, the closed heat dissipation device 2 is a natural cooling device, and the cooling circulation system is in communication with a refrigerant inlet 41 and a refrigerant outlet 42 of the process device 4.
Referring to fig. 1, the control method includes: step S1, acquiring a refrigerant temperature T 1 in the refrigerant tank 1, a cool-in temperature T 2 at the refrigerant inlet 41, and a cool-out temperature T 3 at the refrigerant outlet 42; step S2, comparing the refrigerant temperature T 1, the cold inlet temperature T 2 and the cold outlet temperature T 3, and if the cold inlet temperature T 2 is less than the refrigerant temperature T 1 and less than the cold outlet temperature T 3, executing step S3; step S3, controlling the refrigerant discharged from the refrigerant outlet 42 to be introduced into the closed heat radiator 2; step S4, controlling the refrigerant discharged by the closed heat radiator 2 to be introduced into the refrigerant box 1; step S5, controlling the refrigerant in the refrigerant box 1 to be introduced into the evaporator 31 of the refrigerator 3; in step S6, the refrigerant discharged from the evaporator 31 is controlled to be introduced into the refrigerant inlet 41.
According to the control method provided by the invention, under the first condition that the cooling temperature T 2 is less than the cooling temperature T 1 and the cooling temperature T 3, the closed type heat radiating device 2 and the refrigerator 3 can be connected in series to cool the process side in a combined cooling mode, so that the closed type heat radiating device 2 also plays a part of refrigeration effect, natural cooling resources can be more fully utilized, further the work load of the refrigerator 3 can be reduced, the refrigerator 3 can work in a lower load state, the refrigerator 3 can be kept in a more efficient working state for a long time, and meanwhile, the refrigerator 3 can work to make up for the defect of natural cooling so as to meet the cooling requirement of the process side.
Compared with the control scheme of one-cut in the prior art, the control method provided by the invention can be more suitable for the environment with larger temperature change, is finer in control and is more beneficial to saving energy.
In addition, compared with the traditional open cooling tower, the control method provided by the invention is based on the closed type heat radiating device 2, and the problems of aeration, external impurities entering and the like are avoided because the refrigerant in the closed type heat radiating device 2 is not contacted with the air, so that the generation of impurities such as scale and the like in the circulation process of the refrigerant can be reduced, the attenuation of the performance of the refrigerator can be overcome to a greater extent, and the working efficiency of the refrigerator 3 is ensured, and the reason that the natural cooling device can be connected with the refrigerator 3 in series in the embodiment is also that; meanwhile, because the scale is less generated, the pickling times can be reduced, and the energy consumption caused by the washing machine can be reduced.
The embodiments of the present invention are not limited to the types of the closed heat dissipation device 2 and the refrigerator 3, and a person skilled in the art may select according to actual needs when implementing the present invention; preferably, the closed heat radiator 2 may be an isenthalpic humidifying air cooler, the refrigerator 3 may be a magnetic suspension centrifugal refrigerator, and the refrigerator 3 in this form is particularly suitable for variable working condition operation, and can ensure higher working efficiency.
The step S3 may specifically include: step S31, controlling the refrigerant discharged from the refrigerant outlet 42 to be introduced into the condenser 32 of the refrigerator 3; in step S32, the refrigerant discharged from the condenser 32 is controlled to flow into the closed heat radiator 2.
That is, under the first condition described above, the refrigerant discharged from the refrigerant outlet 42 may also flow through the condenser 32 of the refrigerator 3 to absorb heat of the condenser 32 before entering the closed heat radiating device 2. By this arrangement, on the one hand, the internal circulation of the refrigerator 3 can be assisted, and on the other hand, the temperature of the refrigerant can be increased after the refrigerant absorbs the heat generated by the condenser 32, and the temperature difference between the refrigerant and the natural cooling source can be larger, which can also better promote the function of the closed heat dissipating device 2 to more fully utilize the natural cooling source.
The refrigerant tank 1 may include a first cold tank 11 and a second cold tank 12, the step S1 of obtaining the temperature T 1 of the refrigerant in the refrigerant tank 1 actually refers to obtaining the temperature of the refrigerant in the first cold tank 11, and the step S5 may specifically be to control the refrigerant discharged from the first cold tank 11 to be introduced into the evaporator 31 of the refrigerator 3; step S32 may include: step S321, controlling the refrigerant discharged from the condenser 32 to be introduced into the second cooling tank 12; in step S322, the refrigerant discharged from the second cooling tank 12 is controlled to flow into the closed heat dissipating device 2. By the first cold box 11 as a buffer between the closed heat sink 2 and the evaporator 31 and the second cold box 12 as a buffer between the condenser 32 and the closed heat sink 2, the driving pressure of the refrigerant driving pump (first driving pump 111) between the outlet of the closed heat sink 2 and the inlet of the evaporator 31 and the driving pressure of the refrigerant driving pump (second driving pump 121) between the outlet of the condenser 32 and the inlet of the closed heat sink 2 can be reduced.
The refrigerant tank 1 may further include a third refrigerant tank 13, and the above-described step S6 may include: step S61, controlling the refrigerant discharged from the evaporator 31 to be introduced into the third cooling tank 13; in step S62, the refrigerant discharged from the third cooling tank 13 is controlled to be introduced into the refrigerant inlet 41. Similarly, by using the third cooling tank 13 as a buffer between the outlet of the evaporator 31 and the refrigerant inlet 41, the driving pressure of the refrigerant driving pump (i.e., the third driving pump 131) between the outlet of the evaporator 31 and the inlet of the process device 4 can be reduced.
In order to further overcome the problems of scale accumulation in the system, scale adhesion on the pipeline surface, and the performance attenuation of the refrigerator 3 and the increase of the pipeline flow resistance caused by the scale accumulation, in the step S22, the refrigerant discharged from the second cold box 12 may be subjected to scale removal treatment before being introduced into the closed heat radiator 2; in the above step S44, the refrigerant discharged from the third cooling tank 13 may be subjected to a descaling process before being introduced into the refrigerant inlet 41. The descaling treatment mentioned here can be carried out in particular in special descaling components, for example electronic descalers or the like, which in particular practice are connected to the line through which the coolant circulates.
The circulation flow path of the refrigerant when the closed heat sink 2 and the refrigerator 3 are combined for cooling (i.e. under the first condition) can refer to fig. 4, wherein the refrigerant temperature T 1 in the first cooling tank 11 is determined by the closed heat sink 2, the refrigerant temperature T 1 is actually the cooling temperature of the closed heat sink 2, the cooling temperature T 2 of the refrigerant inlet 41 of the process device 4 is determined by the evaporator 31, and the cooling temperature T 3 of the refrigerant outlet 42 of the process device 4 is determined by the third driving pump 131.
In the actual operation process, the constant cold inlet temperature T 2 and the constant cold outlet temperature T 3 can be ensured as much as possible by adjusting the cold supply efficiency of the closed heat sink 2, the cold supply efficiency of the evaporator 31 and the flow of the third driving pump 131; moreover, along with the change and duration of the ambient temperature, the closed heat dissipation device 2 can actively adjust the energy consumption and the cooling temperature of the evaporator 31 of the refrigerator 3, so that the evaporator 31 of the refrigerator 3 can be maintained to be operated in a constant flow, constant water outlet temperature and variable water inlet temperature state as much as possible through a smaller energy cost, and the refrigerator 3 can maintain the working state of the evaporator 31 in a variable load operation under the condition that the condenser 32 can keep a lower condensing temperature, so as to achieve the variable working state of the refrigerator 3 with safety, high energy efficiency ratio and minimum water inlet and outlet temperature difference of the condenser 32, and further improve the energy efficiency coefficient of the whole system.
Referring to fig. 2, in this embodiment, step S2 may further include: executing the step S7 under the second condition that the refrigerant temperature T 1 is not less than the cooling temperature T 3; step S7, the refrigerant discharged from the refrigerant outlet 42 is controlled to be introduced into the evaporator 31 of the refrigerator 3, and then step S6 is performed.
With the increase of the ambient temperature, when the cooling temperature T 2 of the closed heat dissipation device 2 is greater than or equal to the cooling temperature T 3, the closed heat dissipation device 2 cannot directly participate in cooling of the process side, and at this time, the refrigerant discharged from the refrigerant outlet 42 may directly flow into the evaporator 31 of the refrigerator 3, so as to completely use the evaporator 31 to carry out the cooling task.
On this basis, the method can further comprise a step S8, a step S9 and a step S8, wherein the step S8 is used for controlling the refrigerant discharged by the first cold box 11 to be introduced into the condenser 32 of the refrigerator 3, and the step S9 is used for controlling the refrigerant discharged by the condenser 32 to be introduced into the closed type heat radiator 2 and then to flow back to the first cold box 11. The refrigerant in the first cooling tank 11, though not directly involved in cooling, is introduced into the condenser 32 to absorb the heat released by the condenser 32, so as to form a refrigerant with a higher temperature, and then introduced into the closed heat dissipation device 2, so that natural cooling resources can be utilized to form a cooling loop capable of taking away the heat of the condenser 32, and the utilization of the natural cooling resources can be realized under the condition of high ambient temperature, thereby further saving energy consumption.
The step S9 may include: step S91, controlling the refrigerant discharged from the condenser 32 to be introduced into the second cooling box 12; step S92, controlling the refrigerant discharged from the second cooling box 12 to be introduced into the closed type heat radiating device 2; in step S93, the refrigerant discharged from the closed heat radiator 2 is controlled to be introduced into the first cooling tank 11. In this way, the driving pressure of the coolant driving pump (the first driving pump 111, the second driving pump 121) in the cooling circuit can be greatly reduced by the buffering of the first cooling tank 11, the second cooling tank 12.
The circulation flow path of the refrigerant when the refrigerator 3 is independently refrigerating (i.e., under the second condition) can refer to fig. 5, wherein the temperature T 1 of the refrigerant in the first cooling tank 11 is determined by the closed heat sink 2, the cooling temperature T 2 of the refrigerant inlet 41 of the process device 4 is determined by the evaporator 31, and the cooling temperature T 3 of the refrigerant outlet 42 of the process device 4 is determined by the third driving pump 131.
In the actual running process, the closed heat radiator 2 can actively adjust the energy consumption and the water supply temperature T 2, and the condensation temperature of the refrigerator 3 is reduced to a safe and high-energy-efficiency-ratio variable working condition state through smaller energy and water quantity cost, so that the energy efficiency coefficient of the whole system is improved.
Referring to fig. 3, in this embodiment, step S2 may further include: step S10 is performed under the third condition that the refrigerant temperature T 1 = the cooling-in temperature T 2; in step S10, the refrigerant discharged from the refrigerant outlet 42 is controlled to be introduced into the closed heat sink 2, and then introduced into the refrigerant inlet 41.
With the decrease of the ambient temperature, when the refrigerant temperature T 1 is equal to the cooling temperature T 2, the closed heat dissipation device 2 can completely provide cooling capacity, so that the refrigerator 3 can be turned off to further save energy.
The step S10 may specifically include: step S101, controlling the refrigerant discharged from the refrigerant outlet 42 to be introduced into the second cooling box 12; step S102, controlling the refrigerant discharged from the second cooling box 12 to be introduced into the closed type heat radiating device 2; step S103, controlling the refrigerant discharged by the closed heat radiator 2 to be introduced into the first cold box 11; in step S104, the refrigerant discharged from the third cooling tank 13 is controlled to be introduced into the refrigerant inlet 41. By buffering the first cooling tank 11, the second cooling tank 12, and the third cooling tank 13, the driving pressure of the refrigerant driving pumps (the second driving pump 121, the third driving pump 131) between the closed heat sink 2 and the process device 4 can be reduced; meanwhile, the amount of the refrigerant supplied to the closed heat dissipating device 2 can be conveniently controlled by buffering the refrigerant tank 1 so as to adapt to the change of the ambient temperature, in detail, when the ambient temperature is continuously low, the refrigerant in the second cold tank 12 can not be completely sent to the closed heat dissipating device 2, namely, the second driving pump 121 can run for flow reduction, and then the naturally cooled refrigerant discharged from the closed heat dissipating device 2 is mixed with the refrigerant left in the refrigerant tank 1, so that the refrigerant with the same cold inlet temperature T 2 can be obtained, thereby meeting the requirement of cold supply.
The circulation flow path of the refrigerant when the closed heat dissipation device 2 is independently cooled (i.e. under the third condition) can refer to fig. 6-9, wherein fig. 6 shows a circulation flow path diagram when the closed heat dissipation device 2 is normally cooled under the third condition, the water supplementing pipeline 5 supplies spray water to the spray part 21 in the closed heat dissipation device 2 and supplements the refrigerant in the refrigerant tank 1, and the spray amount of the spray part 21 is controlled by the closed heat dissipation device 2; fig. 7 shows a circulation flow path diagram under the third condition, wherein the temperature is continuously reduced, spraying is stopped, and spraying water flows back, so that the environment temperature is lower, spraying is not needed, and the spraying water can flow back into the first cold box 11; fig. 8 shows the circulation flow path diagram of fig. 7 at the time of the flow reduction operation of the second drive pump 121, at which time the drive pressure of the second drive pump 121 is greatly reduced, so that the drive energy can be saved; fig. 9 shows a circulation flow path diagram of a closed heat sink 2 in a third condition, which is described herein as a closed heat sink 2 is shut down due to a decrease in temperature, and a cooling circulation system in which a plurality of closed heat sinks 2 are typically present, and a part of the closed heat sinks 2 may be shut down when the ambient temperature is further decreased.
The method may further include, before step S1: and S0, controlling the closed heat dissipation device 2, the refrigerator 3 and the process device 4 to perform liquid injection, air exhaust and cleaning.
Step S0 here is actually a preparation step before the system is operated, and can be seen in fig. 10 to 13: fig. 10 shows a circulation flow chart when the process device 4 is filled with liquid, exhausted and cleaned, the water supplementing pipeline 5 supplements the refrigerant in the refrigerant tank 1, and the third driving pump 131 drives the refrigerant in the refrigerant tank 1 to circulate in the process device 4 so as to discharge the gas in the process device 4 and clean the cooling circulation pipeline in the process device 4; fig. 11 shows a circulation flow chart when the closed heat radiator 2 is filled with liquid, exhausted and cleaned, the water supplementing pipeline 5 supplements the refrigerant in the refrigerant tank 1, and the second driving pump 121 drives the refrigerant in the refrigerant tank 1 to the closed heat radiator 2 so as to discharge the gas in the closed heat radiator 2 and clean the cooling circulation pipeline in the closed heat radiator 2; fig. 12 shows a circulation flow chart when the condenser 32 of the refrigerator 3 is filled with liquid, exhausted, and cleaned, the water replenishing pipe 5 replenishes the refrigerant in the refrigerant tank 1, and the first driving pump 111 drives the refrigerant in the refrigerant tank 1 to circulate in the condenser 32 to discharge the gas in the condenser 32 and clean the cooling circulation pipe in the condenser 32; fig. 13 shows a circulation flow chart when the evaporator 31 of the refrigerator 3 is filled with liquid, exhausted, and cleaned, the water replenishing pipe 5 replenishes the refrigerant in the refrigerant tank 1, and the first driving pump 111 drives the refrigerant in the refrigerant tank 1 to circulate in the evaporator 31 to discharge the gas in the evaporator 31 and clean the cooling circulation pipe in the evaporator 31.
As is clear from the foregoing, the control method of the cooling circulation system provided in this embodiment mainly includes, in addition to the preparation steps, the control steps under the combined refrigeration condition of the closed heat dissipation device 2 and the refrigerator 3, the independent refrigeration condition of the refrigerator 3, and the independent refrigeration condition of the closed heat dissipation device 2, and compared with the conventional control method using an open cooling tower, the control method provided in this embodiment is calculated, and therefore, the energy saving rate under the condition of a new water machine (new equipment) can be improved by 29.2%, the energy saving rate under the condition of an old water injection machine (after a specific operation time) can be improved by 46.9%, and the energy saving rate can be greatly improved.
Example two
The embodiment also provides a cooling circulation system, which comprises a refrigerant box 1, a closed heat dissipation device 2 and a refrigerator 3, wherein the cooling circulation system is communicated with a refrigerant inlet 41 and a refrigerant outlet 42 of a process device 4; the refrigerator further comprises a first temperature sensor, a second temperature sensor and a third temperature sensor, wherein the first temperature sensor is used for monitoring the refrigerant temperature T 1 of the refrigerant box 1, the second temperature sensor is arranged at the refrigerant inlet 41 and used for monitoring the cold inlet temperature T 2 in the refrigerant outlet 42, and the third temperature sensor is arranged at the refrigerant outlet 42 and used for monitoring the cold outlet temperature T 3 in the refrigerant outlet 42; the device further comprises a controller (not shown in the figure), wherein the controller is in signal connection with the first temperature sensor and the second temperature sensor, and is suitable for controlling the refrigerant discharged from the refrigerant outlet 42 to be introduced into the closed heat radiating device 2, the refrigerant introduced into the refrigerant tank 1 discharged from the closed heat radiating device 2, the refrigerant introduced into the evaporator 31 of the refrigerator 3 discharged from the refrigerant tank 1 and the refrigerant introduced into the refrigerant inlet 41 discharged from the evaporator 31 under the first condition that the cold inlet temperature T 2 is less than the refrigerant temperature T 1 is less than the cold outlet temperature T 3.
The cooling circulation system provided by the invention corresponds to the control method in the first embodiment, and since the first embodiment has the technical effects as described above, the cooling circulation system corresponding to the first embodiment also has similar technical effects, so that the description thereof is omitted herein.
As shown in fig. 4, the refrigerant tank 1 may include a first cold tank 11 and a second cold tank 12, and the first temperature sensor may be provided at a discharge port of the first cold tank 11, for monitoring a temperature of the refrigerant in the first cold tank 11, that is, the aforementioned refrigerant temperature T 1 is actually a temperature of the refrigerant in the first cold tank 11, and this temperature is indicative of a cooling temperature of the closed cooling device 2; a four-way valve SV0 may be further included, the four-way valve SV0 having four ports, wherein the first port SV0-a, the second port SV0-b may be connected to the refrigerant outlet 42, the inlet of the condenser 32 of the refrigerator 3, respectively, the outlet of the condenser 32 may be in communication with the second cold box 12, and the outlet of the second cold box 12 may be in communication with the closed heat sink 2 through the second drive pump 121.
The controller may also be in signal connection with the four-way valve SV0 and adapted to control the communication between the first port SV0-a and the second port SV0-b of the four-way valve SV0 under the first condition, thereby enabling the refrigerant outlet 42 and the condenser 32 to be conducted to allow the refrigerant exiting the process unit 4 to be introduced into the condenser 32 for heating.
The refrigerant tank 1 may further include a third cold tank 13, the outlet of the closed heat dissipating device 2 may be in communication with the first cold tank 11, and the outlet of the first cold tank 11 may further be connected with a first driving pump 111; a first three-way valve SV1 may also be included, the first three-way valve SV1 having three ports, wherein the first port SV1-a, the second port SV1-b may be connected to an outlet of the first drive pump 111, an inlet of the evaporator 31, respectively.
The controller may be further in signal connection with the first three-way valve SV1, and is adapted to control the first port SV1-a and the second port SV1-b of the first three-way valve SV1 to be in communication under the first condition, so as to conduct the first cold box 11 and the evaporator 31, so as to introduce the refrigerant discharged from the first cold box 11 into the evaporator 31 for cooling.
The outlet of the evaporator 31 may be in communication with the third cold box 13, and the outlet of the third cold box 13 may also be in communication with the cryogen inlet 41 via a third drive pump 131, and the controller may also be in signal connection with the third drive pump 131, the controller being further adapted to adjust the flow rate of the third drive pump 131 in dependence on the exit cooling temperature T 3 to maintain the exit cooling temperature T 3 at a substantially constant value.
The descaling device 6 can be arranged between the second cooling box 12 and the closed heat radiator 2 and between the third cooling box 13 and the refrigerant inlet 41, and the descaling device 6 can be an electronic descaling device specifically so as to remove scale possibly generated in a pipeline, and further solve the problems of pipeline blockage, performance attenuation of the refrigerator 3 and the like caused by the scale to a greater extent.
The four-way valve SV0 also has a third port SV0-c, which third port SV0-c may be connected to the inlet of the evaporator 31, as shown in FIG. 5, and the controller is adapted to control the communication between the first port SV0-a and the third port SV0-c of the four-way valve SV0 to conduct the refrigerant outlet 42 to the inlet of the evaporator 31 under the second condition that the refrigerant temperature T 1 is greater than or equal to the outlet cold temperature T 3, thereby directing the refrigerant discharged from the process unit 4 into the evaporator 31 for forced cooling.
The first three-way valve SV1 also has a third port SV1-c, which third port SV1-c may be connected to an inlet of the condenser 32, and the controller is adapted to control the first port SV1-a of the first three-way valve SV1 to communicate with the third port SV1-c under the second condition to conduct the first cooling tank 11 and the condenser 32, so that the refrigerant in the first cooling tank 11 may be introduced into the condenser 32 to raise the temperature under the action of the first driving pump 111, and the heat of the condenser 32 may be absorbed.
The four-way valve SV0 also has a fourth port SV0-d, which fourth port SV0-d can be connected to the third cold box 13, and the controller is adapted to control the first port SV0-a of the four-way valve SV0 to communicate with the fourth port SV0-d to conduct the process unit 4 and the second cold box 12, and thereby to conduct the refrigerant discharged from the refrigerant outlet 42 of the process unit 4 into the second cold box 12, under a third condition where the refrigerant temperature T 1 is equal to the inlet temperature T 2.
In the third condition, the controller is further adapted to adjust the flow rate of the second driving pump 121 according to the ambient temperature to control the amount of the refrigerant entering the closed heat dissipating device 2, which is described in the first embodiment, and reference is made thereto.
Further, a second three-way valve SV2 may be further included, the second three-way valve SV2 has three ports, wherein the first port SV2-a may be connected to the first cold box 11, the second port SV2-b may be connected to the second cold box 12, and the third port SV2-c may be connected to the closed heat dissipating device 2; the controller may also be in signal connection with a second three-way valve SV2, as shown in fig. 3-8, which may communicate the second port SV2-b of the second three-way valve SV2 with the third port SV2-c when the closed cooling device 2 needs to be operated, and may shut down the second three-way valve SV2 when the closed cooling device 2 does not need to be operated, as shown in fig. 10, 12, 13.
Under the first condition, as shown in fig. 4, the refrigerant circulates in the third driving pump 131, the descaling device 6, the process device 4, the four-way valve SV0 (a→b), the condenser 32, the second cooling tank 12 to form a hot side, the refrigerant circulates in the second cooling tank 12, the second driving pump 121, the descaling device 6, the second three-way valve SV2 (b→c), the closed heat radiator 2, the first cooling tank 11, the first driving pump 111, the first three-way valve SV1 (a→b), the evaporator 31, and the third water tank 13 to form a cold side.
Under the second condition, as shown in fig. 5, the refrigerant circulates in the third driving pump 131, the descaling device 6, the process device 4, the four-way valve SV0 (a→c), the evaporator 31, the third cooling tank 13 to form a refrigerating circuit, and the refrigerant circulates in the first driving pump 111, the first three-way valve SV1 (a→c), the condenser 32, the second cooling tank 12, the second driving pump 121, the descaling device 6, the second three-way valve SV2 (b→c), the closed heat radiator 2, and the first cooling tank 11 to form a cooling circuit.
Under the third condition, referring to fig. 6, the refrigerant circulates in the third driving pump 131, the descaling device 6, the process device 4, the SV0 (a-d), the second cooling tank 12 to form a hot side, and the refrigerant circulates in the second driving pump 121, the descaling device 6, the second three-way valve SV2 (b-c), the closed heat radiator 2, and the first cooling tank 11 to form a cold side.
The cooling circulation system provided by the embodiment may further include a water supplementing pipe 5, the water supplementing pipe 5 may be provided with a water softening device 51, a fourth driving pump 52 and a third three-way valve SV3, the water softening device 51 may reduce the hardness of the water to reduce the possibility of scale generation when water circulates in the pipe as a refrigerant, the fourth driving pump 52 may be used to provide driving force to the water supplementing pipe 5, the third three-way valve SV3 may have one input port SV3-a and two output ports SV3-b, SV3-c, the input port SV3-a may be used to be connected to the water supplementing pipe 5, one output port SV3-b may be connected to the shower member 21 in the closed heat radiator 2, and the other output port SV3-c may be connected to the second cold box 12.
The controller may also be in signal connection with the third three-way valve SV3, and when the coolant tank 1 needs to be replenished, the controller is adapted to control the first port SV3-a and the third port SV3-c of the third three-way valve SV3 to communicate, and when the closed radiator 2 needs to perform the spraying operation, the controller is also adapted to control the first port SV3-a and the second port SV3-b of the third three-way valve SV3 to communicate, which may, of course, also communicate simultaneously as required.
As shown in fig. 9, an anti-freezing valve SV5 connected to the closed heat sink 2 may be further provided, and the anti-freezing valve SV5 is opened when the closed heat sink 2 is closed, and forms anti-freezing return water with the closed heat sink 2, the first cooling tank 11, and the second three-way valve SV2 (a→c). As shown in fig. 10, a purge valve SV4 connected to the coolant outlet 42 and the third cooling tank 13 may be provided for starting up the process device 4 when water injection, gas discharge, and purging are performed.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (18)
1. A control method of a cooling circulation system, characterized in that the cooling circulation system comprises a refrigerant tank (1), a closed heat radiation device (2) and a refrigerator (3), the cooling circulation system is communicated with a refrigerant inlet (41) and a refrigerant outlet (42) of a process device (4), the control method comprising:
Step S1, acquiring a refrigerant temperature (T 1) in the refrigerant tank (1), a cold inlet temperature (T 2) at the refrigerant inlet (41) and a cold outlet temperature (T 3) at the refrigerant outlet (42);
Step S2, comparing the refrigerant temperature (T 1), the cool-in temperature (T 2) and the cool-out temperature (T 3), if the cool-in temperature (T 2) < the refrigerant temperature (T 1) < the cool-out temperature (T 3), executing step S3;
s3, controlling the refrigerant discharged from the refrigerant outlet (42) to be introduced into the closed heat radiating device (2);
S4, controlling the refrigerant discharged by the closed heat radiating device (2) to be introduced into the refrigerant box (1);
step S5, controlling the refrigerant discharged from the refrigerant tank (1) to be introduced into an evaporator (31) of the refrigerator (3);
step S6, controlling the refrigerant discharged from the evaporator (31) to be introduced into the refrigerant inlet (41);
The step S2 further includes: if the temperature (T 1) of the refrigerant is not less than the cooling temperature (T 3), executing the step S7;
Step S7, controlling the refrigerant discharged from the refrigerant outlet (42) to be introduced into the evaporator (31) of the refrigerator (3), and then performing the step S6;
The refrigerant tank (1) comprises a first cold tank (11) and a second cold tank (12), and the step S1 is to obtain the temperature (T 1) of the refrigerant in the refrigerant tank (1), specifically the temperature of the refrigerant in the first cold tank (11);
The step S2 further includes: if the temperature (T 1) of the refrigerant is not less than the cooling temperature (T 3), executing the step S8;
s8, controlling the refrigerant discharged from the first cold box (11) to be introduced into a condenser (32) of the refrigerator (3);
And S9, controlling the refrigerant discharged by the condenser (32) to be introduced into the closed heat radiating device (2), and then refluxing to the first cold box (11).
2. The method of controlling a cooling circulation system according to claim 1, wherein the step S3 includes:
Step S31, controlling the refrigerant discharged from the refrigerant outlet (42) to be introduced into a condenser (32) of the refrigerator (3);
And S32, controlling the refrigerant discharged by the condenser (32) to be introduced into the closed heat radiating device (2).
3. The method according to claim 2, wherein the refrigerant tank (1) comprises a first cold tank (11) and a second cold tank (12), the step S1 of obtaining the temperature (T 1) of the refrigerant in the refrigerant tank (1) is specifically obtaining the temperature of the refrigerant in the first cold tank (11), and the step S5 is specifically controlling the refrigerant discharged from the first cold tank (11) to be introduced into the evaporator (31) of the refrigerator (3);
the step S32 includes: step S321, controlling the refrigerant discharged by the condenser (32) to be introduced into the second cold box (12); and S322, controlling the refrigerant discharged from the second cold box (12) to be introduced into the closed heat radiating device (2).
4. A control method of a cooling circulation system according to claim 3, characterized in that the refrigerant tank (1) further comprises a third cold tank (13), the step S6 comprising:
step S61, controlling the refrigerant discharged from the evaporator (31) to be introduced into the third cold box (13);
and step S62, controlling the refrigerant discharged from the third cold box (13) to be introduced into the refrigerant inlet (41).
5. The method according to claim 4, wherein in the step S322, the coolant discharged from the second cooling tank (12) is subjected to a descaling treatment before being introduced into the closed heat radiator (2);
in step S62, the coolant discharged from the third cooling tank (13) is also subjected to a descaling treatment before being introduced into the coolant inlet (41).
6. The control method of a cooling circulation system according to any one of claims 1 to 5, characterized in that the step S9 includes:
Step S91, controlling the refrigerant discharged from the condenser (32) to be introduced into the second cold box (12);
step S92, controlling the refrigerant discharged from the second cooling box (12) to be introduced into the closed heat radiating device (2);
And step S93, controlling the refrigerant discharged by the closed heat radiating device (2) to be introduced into the first cold box (11).
7. The control method of a cooling circulation system according to any one of claims 1 to 5, characterized in that the step S2 further includes: if the refrigerant temperature (T 1) =the cooling temperature (T 2), step S10 is performed;
and S10, controlling the refrigerant discharged from the refrigerant outlet (42) to be introduced into the closed heat radiating device (2) and then introduced into the refrigerant inlet (41).
8. The control method of a cooling circulation system according to claim 7, characterized in that the coolant tank (1) includes a first cooling tank (11), a second cooling tank (12) and a third cooling tank (13), and the first cooling tank (11) is in communication with the third cooling tank (13), and the step S1 of acquiring the coolant temperature (T 1) in the coolant tank (1) is specifically acquiring the temperature of the coolant of the first cooling tank (11);
The step S10 includes:
step S101, controlling the refrigerant discharged from the refrigerant outlet (42) to be introduced into the second cold box (12);
step S102, controlling the refrigerant discharged from the second cold box (12) to be introduced into the closed heat radiating device (2);
Step S103, controlling the refrigerant discharged by the closed heat radiating device (2) to be introduced into the first cold box (11);
And step S104, controlling the refrigerant discharged from the third cold box (13) to be introduced into the refrigerant inlet (41).
9. The control method of a cooling circulation system according to any one of claims 1 to 5, characterized by further comprising, before the step S1:
And S0, controlling the closed heat dissipation device (2), the refrigerator (3) and the process device (4) to perform liquid injection, air exhaust and cleaning.
10. A cooling circulation system, which is characterized by comprising a refrigerant box (1), a closed heat radiating device (2) and a refrigerator (3), wherein the cooling circulation system is communicated with a refrigerant inlet (41) and a refrigerant outlet (42) of a process device (4);
the cooling system further comprises a first temperature sensor, a second temperature sensor and a third temperature sensor, wherein the first temperature sensor is used for monitoring the temperature (T 1) of the cooling agent in the cooling agent box (1), the second temperature sensor is arranged at the cooling agent inlet (41) and used for monitoring the cooling inlet temperature (T 2) in the cooling agent outlet (42), and the third temperature sensor is arranged at the cooling agent outlet (42) and used for monitoring the cooling outlet temperature (T 3) in the cooling agent outlet (42);
the controller is in signal connection with the first temperature sensor and the second temperature sensor, and is suitable for controlling the refrigerant discharged from the refrigerant outlet (42) to be introduced into the closed heat dissipation device (2), the refrigerant discharged from the closed heat dissipation device (2) to be introduced into the refrigerant tank (1), the refrigerant discharged from the refrigerant tank (1) to be introduced into the evaporator (31) of the refrigerator (3) and the refrigerant discharged from the evaporator (31) to be introduced into the refrigerant inlet (41) under the first condition that the cooling inlet temperature (T 2) < the refrigerant temperature (T 1) < the cooling outlet temperature (T 3);
The refrigerant box (1) comprises a first cold box (11) and a second cold box (12), and the first temperature sensor is arranged at the discharge outlet of the first cold box (11) and is used for monitoring the temperature of the refrigerant of the first cold box (11);
the cooling device further comprises a four-way valve (SV 0), wherein a first port and a second port of the four-way valve (SV 0) are respectively connected with the refrigerant outlet (42) and an inlet of a condenser (32) of the refrigerator (3), the outlet of the condenser (32) is communicated with the second cooling box (12), and the second cooling box (12) is communicated with the closed cooling device (2) through a second driving pump (121);
the controller is in signal connection with the four-way valve (SV 0) and is suitable for controlling the first port and the second port of the four-way valve (SV 0) to be communicated under the first condition.
11. The cooling circulation system according to claim 10, characterized in that the coolant tank (1) further comprises a third cooling tank (13), the outlet of the closed heat dissipating device (2) is in communication with the first cooling tank (11), the outlet of the first cooling tank (11) is further connected with a first driving pump (111);
The device further comprises a first three-way valve (SV 1), wherein a first port and a second port of the first three-way valve (SV 1) are respectively connected with an outlet of the first driving pump (111) and an inlet of the evaporator (31);
The controller is in signal connection with the first three-way valve (SV 1) and is adapted to control the first port and the second port of the first three-way valve (SV 1) to communicate under the first condition.
12. The cooling circulation system according to claim 11, characterized in that the outlet of the evaporator (31) is in communication with the third cold box (13), and that the third cold box (13) is also in communication with the refrigerant inlet (41) by means of a third driving pump (131);
the controller is also in signal connection with the third driving pump (131) and is suitable for adjusting the flow of the third driving pump (131) according to the cold outlet temperature (T 3).
13. Cooling circulation system according to claim 12, characterized in that between the second cold box (12) and the closed heat sink (2) and between the third cold box (13) and the coolant inlet (41) are provided descaling devices (6).
14. The cooling circulation system according to claim 12, wherein the third port of the four-way valve (SV 0) is further connected to the inlet of the evaporator (31), the controller being further adapted to control the first port and the third port of the four-way valve (SV 0) to communicate under the second condition that the refrigerant temperature (T 1) is ≡the cool-out temperature (T 3).
15. The cooling circulation system according to claim 14, wherein the third port of the first three-way valve (SV 1) is further connected to an inlet of the condenser (32), the controller being further adapted to control the first port and the third port of the first three-way valve (SV 1) to communicate in the second condition.
16. The cooling circulation system according to claim 12, characterized in that the fourth port of the four-way valve (SV 0) is further connected to the third cold box (13), the controller being further adapted to control the first port and the fourth port of the four-way valve (SV 0) to communicate under a third condition in which the refrigerant temperature (T 1) is equal to the cold inlet temperature (T 2);
in the third condition, the controller is further adapted to adjust the flow rate of the second driven pump (121) in accordance with the ambient temperature.
17. The cooling circulation system according to claim 12, further comprising a second three-way valve (SV 2), of the three ports of the second three-way valve (SV 2), a first port is connected to the first cold box (11), a second port is connected to the second cold box (12), a third port is in communication with the closed radiator (2), and the controller is in signal connection with the second three-way valve (SV 2).
18. The cooling circulation system according to claim 12, further comprising a water replenishment line (5), said water replenishment line (5) being provided with a water softening device (51), a fourth driving pump (52) and a third three-way valve (SV 3), one of the two output ports of said third three-way valve (SV 3) being connected to said second cold box (12) and the other being connected to a spray member (21) in said closed heat dissipating device (2), said controller being in signal connection with said third three-way valve (SV 3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910554847.7A CN110173950B (en) | 2019-06-25 | 2019-06-25 | Cooling circulation system and control method thereof |
Applications Claiming Priority (1)
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| KR20150051499A (en) * | 2013-11-04 | 2015-05-13 | 엘지전자 주식회사 | A refrigerator and a control method the same |
| CN210718297U (en) * | 2019-06-25 | 2020-06-09 | 北京新元瑞普科技发展有限公司 | Cooling circulation system |
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| JP3800900B2 (en) * | 1999-09-09 | 2006-07-26 | 三菱電機株式会社 | Refrigerating refrigerator, operation method of freezing refrigerator |
| KR101761996B1 (en) * | 2015-04-21 | 2017-07-26 | 엘지전자 주식회사 | A refrigerator and a control method the same |
| US20170160006A1 (en) * | 2016-02-14 | 2017-06-08 | Hamid Reza Angabini | Thermal exchange refrigeration system |
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| KR20150051499A (en) * | 2013-11-04 | 2015-05-13 | 엘지전자 주식회사 | A refrigerator and a control method the same |
| CN210718297U (en) * | 2019-06-25 | 2020-06-09 | 北京新元瑞普科技发展有限公司 | Cooling circulation system |
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