CN110425780A - Refrigeration system and method for controlling refrigeration system - Google Patents
Refrigeration system and method for controlling refrigeration system Download PDFInfo
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- CN110425780A CN110425780A CN201810432296.2A CN201810432296A CN110425780A CN 110425780 A CN110425780 A CN 110425780A CN 201810432296 A CN201810432296 A CN 201810432296A CN 110425780 A CN110425780 A CN 110425780A
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- water
- evaporator
- evaporimeter
- refrigerant
- saline
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Links
- 238000005057 refrigeration Methods 0.000 title claims abstract description 101
- 238000000034 method Methods 0.000 title claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 458
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 171
- 239000011780 sodium chloride Substances 0.000 claims abstract description 170
- 239000003507 refrigerant Substances 0.000 claims abstract description 158
- 238000004891 communication Methods 0.000 claims abstract description 60
- 239000012530 fluid Substances 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims description 107
- 150000003839 salts Chemical class 0.000 claims description 89
- 238000001514 detection method Methods 0.000 claims description 25
- 238000001704 evaporation Methods 0.000 claims description 16
- 230000008020 evaporation Effects 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 238000007689 inspection Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 9
- 230000005611 electricity Effects 0.000 description 7
- 238000002955 isolation Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000012267 brine Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
This application discloses a kind of refrigeration system, refrigeration system includes water evaporimeter, and water evaporimeter includes water evaporimeter entrance and water evaporimeter outlet；Saline water evaporator, saline water evaporator include saline water evaporator communication port；First adjusts pipeline, and first, which adjusts pipeline, is controllably in fluid communication saline water evaporator and water evaporimeter or disconnects, so that the refrigerant in saline water evaporator can controllably flow to water evaporimeter；Pipeline is adjusted with second, second, which adjusts pipeline, is controllably in fluid communication water evaporimeter and saline water evaporator or disconnects, so that the refrigerant in water evaporimeter can controllably flow to saline water evaporator.The application can adjust the refrigeration dose in water evaporimeter and saline water evaporator according to different mode, to guarantee the refrigerating capacity and efficiency of refrigeration system in different modes.
Description
Technical field
A kind of side invention relates generally to field of refrigeration more particularly to refrigeration system and for controlling refrigeration system
Method.
Background technique
Traditional refrigeration system include compressor, condenser, throttling set and evaporator, for make refrigerant wherein into
Row circulates, so that the state change by refrigerant completes refrigeration cycle.Object to be cooled is conducted through evaporator,
And heat exchange is carried out with the low-temperature refrigerant in evaporator, to achieve the purpose that cooled.
In refrigeration system industry, user wishes the operation for improving the operational efficiency of refrigeration system and reducing refrigeration system
Cost.
Summary of the invention
According to a first aspect of the present application, this application provides a kind of refrigeration system, the refrigeration system includes water evaporation
Device, the water evaporimeter include water evaporimeter entrance and water evaporimeter outlet；Saline water evaporator, the saline water evaporator include salt
Water evaporimeter communication port；First adjusts pipeline, and described first, which adjusts pipeline, controllably steams the saline water evaporator and the water
It sends out device to be in fluid communication or disconnect, so that the refrigerant in the saline water evaporator can controllably flow to the water evaporimeter；
Pipeline is adjusted with second, described second, which adjusts pipeline, is controllably in fluid communication the water evaporimeter and saline water evaporator or breaks
It opens, so that the refrigerant in the water evaporimeter can controllably flow to the saline water evaporator.
According to the refrigeration system of above-mentioned first aspect, the water evaporimeter includes water evaporimeter communication port；The salt water steams
It sends out device communication port and the water evaporimeter communication port is in fluid communication.
Refrigeration system according to above-mentioned first aspect further includes liquid level detection device, and the liquid level detection device is arranged to
The liquid level that is able to detect in the water evaporimeter and the refrigerant level that water evaporimeter is provided detection signal；The level sensing dress
It sets the liquid level for being configured to detect in the saline water evaporator and saline water evaporator level sensing signal is provided.
Refrigeration system according to above-mentioned first aspect further includes control device, and the control device is configured to basis
The system of refrigerant level the detection signal and the saline water evaporator of the water evaporimeter provided by the liquid level detection device
Cryogen level sensing signal come control it is described first adjusting pipeline with it is described second adjusting pipeline be connected to and disconnection.
According to the refrigeration system of above-mentioned first aspect, the evaporating pressure in the water evaporimeter is higher than the saline water evaporator
In evaporating pressure；Described first is adjusted including pump in pipeline, and the pump includes pump intake and pump discharge, the pump intake and institute
Saline water evaporator communication port fluid communication is stated, the pump discharge and the water evaporimeter entrance are in fluid communication, so that described
When control device controls the pump startup, the refrigerant in the saline water evaporator can be reduced；Second regulation pipe
It include the first valve in road, first valve includes the first valve inlet and the first valve outlet, and first valve inlet and the water steam
It sends out device entrance to be in fluid communication, first valve outlet and the saline water evaporator communication port are in fluid communication, so that in the control
When device processed controls first valve opening, the refrigerant in the water evaporimeter can be reduced.
According to the refrigeration system of above-mentioned first aspect, the control device is configured as when the system in the saline water evaporator
When cryogen liquid level is lower than salt water safety levels, the control device stops or does not start the pump.
According to the refrigeration system of above-mentioned first aspect, described first is adjusted in pipeline including injector.
Refrigeration system according to above-mentioned first aspect further includes compressor, and the compressor includes suction port of compressor and compression
Machine outlet；Condenser, the condenser include condenser inlet and condensator outlet, the condenser inlet and compressor outlet
It is in fluid communication；First throttling device, the first throttling device include that first throttling device entrance and first throttling device export,
The first throttling device entrance and condensator outlet are in fluid communication, and the first throttling device outlet enters with the water evaporimeter
Mouth is in fluid communication；And second throttling device, the second throttling device include second throttling device entrance and second throttling device
Outlet, the second throttling device entrance and the water evaporimeter communication port are in fluid communication, the second throttling device outlet with
The saline water evaporator communication port is in fluid communication.
According to a second aspect of the present application, this application provides a kind of method for controlling refrigeration system, the refrigeration
System includes water evaporimeter and saline water evaporator, it is characterised in that includes the following steps: that adjusting pipeline by first controllably will
The water evaporimeter and the saline water evaporator are in fluid communication；Pipeline is adjusted controllably by the water evaporimeter and institute by second
State saline water evaporator fluid communication；Detect the refrigerant in the refrigerant level and the saline water evaporator in the water evaporimeter
Liquid level；According to the refrigerant level in the refrigerant level and the saline water evaporator in the detected water evaporimeter into
One of row following four operation operation: operation one: connection described first adjusts pipeline, so that in the saline water evaporator
Refrigerant can flow to the water evaporimeter；Operation two: connection described second adjusts pipeline, so that in the water evaporimeter
Refrigerant can flow to the saline water evaporator；Operation three: it disconnects described first and adjusts pipeline；Operation four: described the is disconnected
Two adjust pipeline.
According to the method for controlling refrigeration system of above-mentioned second aspect, the refrigeration system includes operating status, institute
Stating operating status includes aqueous mode and salt aqueous mode；When aqueous mode under the operating status, and in the water evaporimeter
Refrigerant level be higher than the water evaporimeter water highest liquid level when, execute it is described operation two；System in the water evaporimeter
When cryogen liquid level is not higher than the water highest liquid level of the water evaporimeter, the operation four is executed；Water under the operating status
When mode, and water running liquid level of the refrigerant level in the water evaporimeter lower than the water evaporimeter and the salt water
When refrigerant level in evaporator is higher than the salt water minimum liquid level of the saline water evaporator, the operation one is executed；The water
Water running liquid level of the refrigerant level not less than the water evaporimeter in evaporator or the refrigeration in the saline water evaporator
When agent liquid level is not higher than the salt water minimum liquid level of the saline water evaporator, the operation three is executed；Under the operating status
When salt aqueous mode, and the refrigerant level in the saline water evaporator is higher than the salt water running liquid level of the saline water evaporator
When, execute the operation one；Refrigerant level in the saline water evaporator is not higher than the salt water running of the saline water evaporator
When liquid level, the operation three is executed.
According to the method for controlling refrigeration system of above-mentioned second aspect, the refrigeration system includes standby mode, institute
Stating standby mode includes water ready mode and salt water ready mode；When water ready mode in the said standby state, and institute
When stating refrigerant level in saline water evaporator and being higher than the salt water minimum liquid level of the saline water evaporator, the operation one is executed；
When refrigerant level in the saline water evaporator is not higher than the salt water minimum liquid level of the saline water evaporator, the operation is executed
Three；When salt water ready mode in the said standby state, and the refrigerant level in the saline water evaporator is lower than described
When the salt water of saline water evaporator fills liquid level, the operation two is executed；Refrigerant level in the saline water evaporator is not less than
When the salt water of the saline water evaporator fills liquid level, the operation four is executed.
In the case where implementing tou power price (for example, daytime, the expensive evening electricity price of electricity price was cheap) at present, the system of the application
The advantages of at least that cooling capacity can be stored using cool storage medium when electricity price is cheap, and the cold of storage is used when electricity price is more expensive
Amount is freezed, to realize the purpose for saving refrigeration system operating cost.
Detailed description of the invention
Fig. 1 shows the refrigeration system of the application；
Refrigerant flows mostly to when Fig. 2A shows refrigeration system shown in FIG. 1 under salt aqueous mode；
Refrigerant flows mostly to when Fig. 2 B shows refrigeration system shown in FIG. 1 under aqueous mode；
Fig. 3 shows control unit and control connection in refrigeration system shown in FIG. 1；
Fig. 4 shows the more detailed structure of control device in Fig. 3；
Fig. 5 shows control device to the control flow of refrigeration system；
Fig. 6 shows more detailed step in step 512 shown in fig. 5；
Fig. 7 shows more detailed step in step 514 shown in fig. 5；
Fig. 8 shows more detailed step in step 516 shown in fig. 5；
Fig. 9 shows more detailed step in step 518 shown in fig. 5.
Specific embodiment
The various specific embodiments of the application are described below with reference to the attached drawing for constituting this specification a part.
In the conceived case, identical or similar appended drawing reference used herein refers to identical or corresponding component.
Fig. 1 shows the refrigeration system 100 of the application.As shown in Figure 1, refrigeration system 100 mainly include compressor 102,
Condenser 104, first throttling device 112, water evaporimeter 106, second throttling device 114 and saline water evaporator 108, they are by pipe
Road connects into a closed system, and is filled with refrigerant in systems.Specifically, as shown in Figure 1, compressor 102 wraps
Include suction port of compressor 102a and compressor outlet 102b.Condenser 104 includes condenser inlet 104a and condensator outlet 104b.
First throttling device 112 includes that first throttling device entrance 112a and first throttling device export 112b.Water evaporimeter 106 includes
Water evaporimeter entrance 106a, water evaporimeter export 106b and water evaporimeter communication port 106a '.Second throttling device 114 includes the
Two throttling set entrance 114a and second throttling device export 114b.Saline water evaporator 108 includes saline water evaporator communication port
108a and saline water evaporator export 108b.These components are connected by pipeline as follows: compressor outlet 102b is connected to cold
Condenser entrance 104a, condensator outlet 104b are connected to first throttling device entrance 112a, and first throttling device exports 112b and connects
It is connected to water evaporimeter entrance 106a, water evaporimeter outlet 106b is connected to suction port of compressor 102a, water evaporimeter communication port 106a '
It is connected to second throttling device entrance 114a, second throttling device outlet 114b is connected to saline water evaporator communication port 108a, salt
Water evaporimeter outlet 108b is connected to suction port of compressor 102a.Refrigeration system 100 further includes water evaporimeter valve 116 and salt water evaporation
Device valve 118.Water evaporimeter valve 116 includes water evaporimeter valve inlet 116a and water evaporimeter valve outlet 116b.Saline water evaporator valve
118 include saline water evaporator valve inlet 118a and saline water evaporator valve outlet 118b.Water evaporimeter valve inlet 116a and water evaporation
Device exports 106b and is in fluid communication, and water evaporimeter valve outlet 116b and suction port of compressor 102a are in fluid communication.Saline water evaporator valve enters
Mouth 118a and saline water evaporator outlet 108b are in fluid communication, saline water evaporator valve outlet 118b and suction port of compressor 102a fluid company
It is logical.
Fig. 2A and Fig. 2 B shows refrigeration system 100 shown in FIG. 1 in two kinds of operational modes (including aqueous mode and salt water mould
Formula) under refrigerant flow graph.Fig. 2A shows the main stream of refrigeration system shown in FIG. 1 refrigerant under salt aqueous mode
To, and Fig. 2 B shows refrigeration system shown in FIG. 1 refrigerant under the aqueous mode and flows mostly to.As shown in Figure 2 A, it is running
Under the salt aqueous mode of state, water evaporimeter valve 116 is closed, and water evaporimeter 106 is out of service, and saline water evaporator valve 118 is opened simultaneously
And saline water evaporator 108 is run.Refrigerant in refrigeration system 100 passes sequentially through compressor 102, condenser 104, first throttle
Device 112, water evaporimeter 106, second throttling device 114, saline water evaporator 108 and saline water evaporator valve 118 form refrigeration and follow
Ring.In process of refrigerastion, compressor 102 be discharged high temperature and high pressure gaseous refrigerant in condenser 104 with surrounding medium or load
Cryogen (enter condenser 104 in Fig. 1 and indicate the trend of refrigerating medium such as cooling water from the arrow of condenser 104 out) carries out heat
Exchange, releases heat and is liquefied and condenses；First throttling device 112 by by condenser 104 high pressure liquid refrigerant section
Stream, makes its pressure reduction；Refrigerant passes through water evaporimeter 106；Second throttling device 114 will be from the refrigeration of water evaporimeter 106
Agent continues to throttle, its pressure is made to continue to reduce；Low pressure refrigerant (enters in saline water evaporator 108 with cooled object in Fig. 1
The arrow of saline water evaporator 108 and the arrow come out from saline water evaporator 108 indicate the trend of cooled object such as chilled brine)
Heat exchange occurs, the heat for absorbing cooled object is vaporized and evaporates；The refrigerant vapour that vaporization generates passes through salt water evaporation
It is sucked after device valve 118 by compressor 102, is discharged after compression with high pressure.In order to save refrigeration system operating cost, electricity price just
Salt aqueous mode can be opened when preferably, under salt aqueous mode, the cooled object of the saline water evaporator 108 in refrigeration system 100 can
To be set as salt water, calcium chloride solution, magnesium chloride solution, sodium chloride solution, ethylene glycol solution, glycerin solution, sodium hydroxide
Cooling capacity can be stored in Ice Storage Tank (not shown) by aqueous solution etc., for using when electricity price is more expensive.Specifically, when electricity
When valence is expensive, can preferentially using the cooling capacity being stored in Ice Storage Tank (not shown), if cooling capacity in Ice Storage Tank (not shown) without
Method meet demand, is then turned on aqueous mode, continues to provide cooling capacity by the water evaporimeter 106 in refrigeration system 100.
It should be noted that chilled water refer to from water evaporimeter 106 flow into outflow, with water evaporimeter 106 in
The water of refrigerant heat exchanger, chilled brine refer to from inflow in saline water evaporator 108 and outflow and in water evaporimeter 106 system
The water of cryogen heat exchange.Chilled water and chilled brine do not represent solid water or solid salt water.
Although it should also be noted that, being lauched in salt aqueous mode, evaporator 106 is out of service, and refrigerant still is able to flow
Enter water evaporimeter 106 and is flowed out from water evaporimeter 106, and water evaporimeter 106 does not occur with cooled object (such as chilled water)
Heat exchange.
As shown in Figure 2 B, under the aqueous mode of operating status, saline water evaporator valve 118 is closed, and saline water evaporator 108 stops
Operation, water evaporimeter valve 116 open the operation of device 106 that evaporates the water.Refrigerant in refrigeration system 100 passes sequentially through compressor
102, condenser 104, first throttling device 112, water evaporimeter 106 and water evaporimeter valve 116 form refrigeration cycle.Freezing
Cheng Zhong, the high temperature and high pressure gaseous refrigerant that compressor 102 is discharged (enter condenser with surrounding medium in condenser 104 in Fig. 1
104 and from condenser 104 come out arrow indicate surrounding medium such as cooling water trend) carry out heat exchange, release heat quilt
It liquefies and condenses；First throttling device 112 by by condenser 104 high pressure liquid refrigerant throttle, make its pressure reduction；It is low
Compression refrigerant is in water evaporimeter 106 with cooled object (into the arrow of water evaporimeter 106 and from water evaporimeter 106 in Fig. 1
Arrow out indicates the trend of cooled object such as chilled water) heat exchange occurs, the heat for absorbing cooled object is vaporized
And it evaporates；The refrigerant vapour that vaporization generates after water evaporimeter valve 116 by compressor 102 by being sucked, after compression with high pressure
Discharge.When the cooling capacity in Ice Storage Tank (not shown) is unable to satisfy demand, aqueous mode can be opened, by water evaporimeter 106 after
It is continuous that cooling capacity is provided.
It should be noted that, although saline water evaporator 108 is out of service under aqueous mode, but refrigerant still is able to flow into
Or outflow saline water evaporator 108, and with cooled object (such as chilled brine) heat exchange does not occur for saline water evaporator 108.
It continues to refer to figure 1, refrigeration system 100 further includes that the first adjusting pipeline 142 and second adjusts pipeline 144, for adjusting
Save the amount of refrigerant in saline water evaporator 108 and water evaporimeter 106.First adjusts pipeline 142 controllably by saline water evaporator 108
It is in fluid communication with water evaporimeter 106 or disconnects, so that the refrigerant in saline water evaporator 108 can controllably flows to water evaporation
Device 106.Second, which adjusts pipeline 144, is controllably in fluid communication water evaporimeter 106 and saline water evaporator 108 or disconnects, so that
Refrigerant in water evaporimeter 106 can controllably flow to saline water evaporator 108.
In refrigeration system 100, the evaporating pressure in water evaporimeter 106 is higher than the evaporating pressure in saline water evaporator 108,
Thus the refrigerant in water evaporimeter 106 is easily accumulated in saline water evaporator 108.The application can adjust pipeline by first
142 and second adjust pipeline 144, according to different mode to the amount of refrigerant in water evaporimeter 106 and/or saline water evaporator 108
The different requirements of (i.e. refrigerant level), to adjust the amount of refrigerant in water evaporimeter 106 and saline water evaporator 108, thus
Guarantee the refrigerating capacity and efficiency of refrigeration system 100 in different modes.As an example, include in the first adjusting pipeline 142
Pump 132, pump 132 include pump intake 132a and pump discharge 132b, pump intake 132a and saline water evaporator communication port 108a (i.e. second
Throttling set exports 114b) it is in fluid communication, (i.e. first throttling device exports by pump discharge 132b and water evaporimeter entrance 106a
112b) it is in fluid communication, so that the first adjusting pipeline 142 is connected to, so that saline water evaporator when 132 starting of pump
Refrigerant flow direction water evaporimeter 106 in 108.In addition, including in the first adjusting pipeline 142 in order to which 132 and line isolation will be pumped
Isolating valve 136, isolating valve 136 are connected between 132 and water evaporimeter entrance 106a of pump (i.e. first throttling device outlet 112b).
More specifically, isolating valve 136 includes isolation valve inlet 136a and isolation valve outlet 136b, and valve inlet 136a and pump discharge is isolated
132b is in fluid communication, and isolation valve outlet 136b and water evaporimeter entrance 106a (i.e. first throttling device exports 112b) fluid connect
It is logical.As an example, it when needing to open pump 132, first opens isolating valve 136 and is then turned on pump 132；132 are pumped when needing to close
When, it first closes pump 132 and turns off isolating valve 136, to make pump 132 shift to an earlier date with the other component in pipeline by isolating valve 136
Isolation.Second is adjusted including the first valve 134 in pipeline 144, and the first valve 134 includes the first valve inlet 134a and the first valve outlet
134b, the first valve inlet 134a and water evaporimeter entrance 106a (i.e. first throttling device exports 112b) are in fluid communication, the first valve
It exports 134b and saline water evaporator communication port 108a (i.e. second throttling device exports 114b) is in fluid communication, so that the first valve
When 134 opening, the second adjusting pipeline 144 is connected to, so that the refrigerant flow direction salt water evaporation in water evaporimeter 106
Device 108.It should be noted that also may include injector or other devices in the first adjusting pipeline 142, so that salt water steams
Refrigerant in hair device 108 can flow to water evaporimeter 106.Second adjusting pipeline 144 in also may include check valve or its
His device, so that the refrigerant in water evaporimeter 106 can flow to saline water evaporator 108.
Fig. 3 shows control unit (including control device 302) and control connection in refrigeration system 100 shown in FIG. 1.
As shown in figure 3, refrigeration system 100 further includes liquid level detection device 304,306 and control device 302.304 quilt of liquid level detection device
The refrigerant level being set as in detection water evaporimeter 106, and the refrigerant level for the water evaporimeter 106 that will test detects letter
Number it is supplied to control device 302.Liquid level detection device 306 is arranged to detect the refrigerant level in saline water evaporator 108, and
The refrigerant level detection signal for the saline water evaporator 108 that will test is supplied to control device 302.Control device 302 and liquid
Level detecting apparatus 304,306, pump 132,134 communication connection of isolating valve 136 and the first valve.Control device 302 is configured to
The level sensing signal of signal and saline water evaporator 108 is detected according to the refrigerant level of the water evaporimeter 106 received to control
First adjusting pipeline 142 with second adjusting pipeline 144 be connected to and disconnection.As an example, control device 302 is configured as
Signal can be detected according to the refrigerant level of the water evaporimeter 106 received and the refrigerant level of saline water evaporator 108 detects
Signal come control pump 132 start and stop and isolating valve 136 opens or closes.Control device 302 is additionally configured to energy
The refrigerant level detection of enough refrigerant level detection signals and saline water evaporator 108 according to the water evaporimeter 106 received is believed
Number control opening or closing for the first valve 134.
It should be noted that control device 302 can be according to water evaporation when not only refrigeration system 100 is in operating status
The refrigerant level detection signal of device 106 and the refrigerant level of saline water evaporator 108 detect signal to control the first regulation pipe
Road 142 with second adjusting pipeline 144 be connected to and disconnection.When refrigeration system 100 is in standby and (does not run), control
Signal also can be detected according to the refrigerant level of water evaporimeter 106 for device 302 and the refrigerant level of saline water evaporator 108 detects
Signal come control the first adjusting pipeline 142 with second adjusting pipeline 144 be connected to and disconnection, to control water evaporimeter 106 and salt
The height of refrigerant level in water evaporimeter 108.Specifically, when refrigeration system 100 is in standby and (does not run),
Its standby mode includes water ready mode and salt water ready mode.Although refrigeration system 100 is in standby, water evaporimeter
106 and saline water evaporator 108 do not run, but can according to next time run when operating status to water evaporimeter 106 and salt
Refrigerant level is adjusted in water evaporimeter 108, when in order to run next time can quick start, and no longer expend the time
Refrigerant level in water evaporimeter 106 and saline water evaporator 108 is waited to restart refrigeration system 100 after reaching predetermined fluid level.
Fig. 4 shows the more detailed structure of control device 302 in Fig. 3.As shown in figure 4, control device 302 includes bus
402, processor 404, input interface 406, output interface 408 and the memory 414 with control program 416.Control device
All parts in 302, including processor 404, input interface 406, output interface 408 and memory 414 and bus 402 communicate
Connection, enables processor 404 to control the operation of input interface 406, output interface 408 and memory 414.Specifically
It says, memory 414 is for storing program, instruction and data, and processor 404 is from 414 reading program of memory, instruction sum number
According to, and data can be written to memory 414.Control defeated by executing 414 reading program of memory and instruction, processor 404
The operation of incoming interface 406 and output interface 408.
By line 418, input interface 406 is received from extraneous signal and data, including from liquid level detection device 304,306
The signal and data sent；
By line 422, output interface 408 issues control signal to outside, including to pump 132, isolating valve 136 and first
Valve 134 issues control signal；
It should be noted that realizing that the program of flow chart shown in Fig. 5-Fig. 9 is stored in control in embodiments herein
In the memory 414 of device 302 processed.The program for being stored in control device 302 is executed by processor 404, control device 302 is right
Pump 132, isolating valve 136 and the first valve 134 are controlled.
It should also be specified that multiple setting liquid levels are also stored in the memory 414 of control device 302, for indicating
The liquid level of refrigerant refrigerant in water evaporimeter 106 and saline water evaporator 108.As an example, water evaporimeter 106
In be equipped with water highest liquid level and water running liquid level, wherein water highest liquid level be higher than water running liquid level.It is equipped in saline water evaporator 108
Salt water running liquid level, salt water filling liquid level, salt water minimum liquid level and salt water safety levels, wherein salt water running liquid level is higher than salt water
Liquid level is filled, salt water fills liquid level and is higher than salt water minimum liquid level, and salt water minimum liquid level is higher than salt water safety levels.In addition, this Shen
Please in " water highest liquid level " refer to the highest liquid level of the refrigerant set in water evaporimeter 106；" water running liquid level " refers to water
The operation liquid level of the refrigerant set in evaporator 106；" salt water running liquid level " refers to the refrigeration set in saline water evaporator 108
The operation liquid level of agent；" salt water filling liquid level " refers to the filling liquid level of the refrigerant set in saline water evaporator 108；" salt water is most
Low liquid level " refers to the minimum liquid level of the refrigerant set in saline water evaporator 108；" salt water safety levels " refer to saline water evaporator
The safety levels of the refrigerant set in 108.
Fig. 5 shows control device 302 to the control flow of refrigeration system 100.Wherein, there are three types of the tools of refrigeration system 100
State, i.e. operating status, standby mode and off-mode.It should be noted that standby mode and off-mode be not identical.Work as system
When cooling system 100 is in standby, compressor 102, condenser 104 in refrigeration system 100, first throttling device 112, water
Evaporator 106, second throttling device 114 and saline water evaporator 108 are not run, but control device 302 is still in operation shape
State and instruction is waited, is throttled with controlling compressor 102, condenser 104, first throttling device 112, water evaporimeter 106, second
The components such as device 114 and saline water evaporator 108 start and stop.
It should be noted that " the opening the first valve " that refers in the application refers to: when the first valve 134 is in close state
When, open the first valve 134；When the first valve 134 is in the open state, the open state of the first valve 134 is kept.In the application
" the opening pump and isolating valve " referred to refers to: when pumping 132 and isolating valve 136 is in close state, opening pump 132 and isolating valve
136；When pumping 132 and isolating valve 136 in the open state, the open state of pump 132 and isolating valve 136 is kept.In the application
" close the first valve " that refers to refer to: when the first valve 134 is in the open state, close the first valve 134；When the first valve 134
When being in close state, the closed state of the first valve 134 is kept." the closing pump and isolating valve " that refers in the application refers to:
When pumping 132 and isolating valve 136 in the open state, pump 132 and isolating valve 136 are closed；When pump 132 and isolating valve 136 are in
When closed state, the closed state of pump 132 and isolating valve 136 is kept." stopping or do not start pump " for referring in the application
Refer to: when pump 132 is in the open state, stopping the operation of pump 132；When pumping 132 closed state, the closing of pump 132 is kept
State.
In step 502, processor 404 closes pump 132, isolating valve 136 and the first valve 134.Being followed by subsequent processing device 404 will grasp
Go to step 504.
In step 504, processor 404 carries out judgement operation, according to different mode (the water moulds i.e. under operating status
Formula, the salt aqueous mode under operating status, the salt water ready mode under water ready mode and standby mode under standby mode), control
Process processed is gone to respectively in corresponding mode.
When the purpose of step 512 is the aqueous mode under refrigeration system 100 is in operating status, so that water evaporimeter 106
In refrigerant level not less than water running liquid level and be not higher than water highest liquid level.Because when refrigerant level is higher than water highest
When liquid level, the amount of the refrigerant in water evaporimeter 106 is excessive, may cause 102 absorbing gas belt liquid of compressor, to reduce compressor
102 service life reduces operational energy efficiency；And the refrigeration when refrigerant level is lower than water running liquid level, in water evaporimeter 106
The amount of agent is very few, and it is insufficient to may cause the cooling capacity provided in water evaporimeter 106.
When the purpose of step 514 is the salt aqueous mode under refrigeration system 100 is in operating status, so that saline water evaporator
Refrigerant in 108 is not higher than salt water running liquid level, to prevent the refrigerant in saline water evaporator 108 excessive, to avoid pressure
102 absorbing gas belt liquid of contracting machine, and then increase operational energy efficiency.
The purpose of step 516 is when the water ready mode that refrigeration system 100 is in the standby state, so that salt water evaporation
The refrigerant level of device 108 is not higher than salt water minimum liquid level, thus in the case where saline water evaporator 108 has certain refrigeration dose
Guarantee the refrigerant level in higher water evaporimeter 106, when with to run aqueous mode next time can quick start, and no longer
It expends after refrigerant level in time waiting water evaporimeter 106 and saline water evaporator 108 reaches predetermined fluid level and restarts refrigeration system
System 100.
The purpose of step 518 is when the salt water ready mode that refrigeration system 100 is in the standby state, so that salt water steams
The refrigerant level for sending out device 108 fills liquid level not less than salt water, thus guarantee the refrigerant level in saline water evaporator 108, with
When to run salt aqueous mode next time can quick start, and no longer expend the time and wait water evaporimeter 106 and saline water evaporator
Refrigerant level restarts refrigeration system 100 after reaching predetermined fluid level in 108.
In step 520, processor 404 judges whether refrigeration system 100 stops working (shutting down).If refrigeration system
100 have stopped working, and processor 404 is by end operation.If refrigeration system 100 still work (it is i.e. in operating status or to
Machine state), operation is gone to step 504 by processor 404.
Fig. 6 shows more detailed step in step 512 shown in fig. 5 (aqueous mode under operating status).
In step 602, processor 404 is obtained from liquid level detection device 304 in currently detected water evaporimeter 106
Refrigerant level.It is followed by subsequent processing device 404 and operation is gone into step 604.
In step 604, processor 404 by currently detected water evaporimeter 106 refrigerant level be stored in
Water highest liquid level in memory 414 compares.If the refrigerant level in currently detected water evaporimeter 106 is higher than water most
Operation is gone to step 606 by high liquid level, processor 404.In step 606, the first valve 134 is opened, and second adjusts pipeline 144
It is connected to, pipeline 144 is adjusted by second by the part of refrigerant of first throttling device 112 and enters saline water evaporator 108,
To make the refrigerant for flowing into water evaporimeter 106 by first throttling device 112 reduce, so that the refrigeration of water evaporimeter 106
Agent liquid level reduces.It is followed by subsequent processing device 404 and operation is gone into step 602.
In step 604, if the refrigerant level in currently detected water evaporimeter 106 is not higher than water highest liquid
Operation is gone to step 608 by position, processor 404.In step 608, the first valve 134 is closed, and being followed by subsequent processing device 404 will operate
Go to step 610.
In step 610, processor 404 is obtained from liquid level detection device 304 in currently detected water evaporimeter 106
Refrigerant level, and obtain from liquid level detection device 306 refrigerant level in currently detected saline water evaporator 108.
It is followed by subsequent processing device 404 and operation is gone into step 612.
In step 612, processor 404 by currently detected water evaporimeter 106 refrigerant level be stored in
Water running liquid level in memory 414 compares, and by currently detected saline water evaporator 108 refrigerant level with deposit
The salt water minimum liquid level stored up in memory 414 compares.If the refrigerant level in currently detected water evaporimeter 106 is low
In water running liquid level, and the refrigerant level in currently detected saline water evaporator 108 is higher than salt water minimum liquid level, processing
Operation is gone to step 614 by device 404.In step 614, pump 132 and protection valve 136 are opened, and the first adjusting pipeline 142 is connected
Logical, the refrigerant in saline water evaporator 108 adjusts pipeline 142 by first and enters water evaporimeter 106, to make saline water evaporator
Refrigerant in 108 is reduced, so that the refrigerant level of water evaporimeter 106 increases.It is followed by subsequent processing device 404 and operation is gone into step
Rapid 612.
In step 612, if the refrigerant level in currently detected water evaporimeter 106 is not less than water running liquid
Refrigerant level in position or currently detected saline water evaporator 108 is not higher than salt water minimum liquid level, and processor 404 will
Operation goes to step 618.
In step 618, pump 132 and isolating valve 136 are closed.It is followed by subsequent processing device 404 and operation is gone into step 520.
Fig. 7 shows more detailed step in step 514 shown in fig. 5 (the salt aqueous mode under operating status).
In a step 702, processor 404 is obtained from liquid level detection device 306 in currently detected saline water evaporator 108
Refrigerant level.It is followed by subsequent processing device 404 and operation is gone into step 704.
In step 704, by currently detected saline water evaporator 108 refrigerant level and be stored in memory
Salt water running liquid level in 414 compares.If the refrigerant level in currently detected saline water evaporator 108 is higher than salt water transport
Operation is gone to step 706 by row liquid level, processor 404.In step 706, pump 132 and isolating valve 136 are opened, and first is adjusted
Pipeline 142 is connected to, and is adjusted pipeline 142 by first by the part of refrigerant of second throttling device 114 and is entered water evaporation
Device 106, to make the refrigerant into saline water evaporator 108 reduce, so that the refrigerant level of water evaporimeter 106 increases.
It is followed by subsequent processing device 404 and operation is gone into step 702.
In step 704, if the refrigerant level in currently detected saline water evaporator 108 is not higher than salt water running
Operation is gone to step 708 by liquid level, processor 404.In step 708, pump 132 and isolating valve 136 are closed, and are followed by subsequent processing device
Operation is gone to step 520 by 404.
Fig. 8 shows more detailed step in step 516 shown in fig. 5 (the water ready mode under standby mode).
In step 802, processor 404 is obtained from liquid level detection device 306 in currently detected saline water evaporator 108
Refrigerant level.It is followed by subsequent processing device 404 and operation is gone into step 804.
In step 804, by currently detected saline water evaporator 108 refrigerant level and be stored in memory
Salt water minimum liquid level in 414 compares.If the refrigerant level in currently detected saline water evaporator 108 is higher than salt water most
Operation is gone to step 808 by low liquid level, processor 404.In step 808, pump 132 and isolating valve 136 are opened, and first is adjusted
Pipeline 142 is connected to, and the refrigerant in saline water evaporator 108 adjusts pipeline 142 by first and enters water evaporimeter 106, thus
Reduce the refrigerant in saline water evaporator 108, so that the refrigerant level of water evaporimeter 106 increases.It is followed by subsequent processing device 404
Operation is gone into step 802.
In step 804, if the refrigerant level in currently detected saline water evaporator 108 is minimum not higher than salt water
Operation is gone to step 806 by liquid level, processor 404.In step 806, pump 132 and isolating valve 136 are closed, and are followed by subsequent processing device
Operation is gone to step 520 by 404.
Fig. 9 shows more detailed step in step 518 shown in fig. 5 (the salt water ready mode under standby mode).
In step 902, processor 404 is obtained from liquid level detection device 306 in currently detected saline water evaporator 108
Refrigerant level.It is followed by subsequent processing device 404 and operation is gone into step 904.
In step 904, by currently detected saline water evaporator 108 refrigerant level and be stored in memory
Salt water filling liquid level in 414 compares.If the refrigerant level in currently detected saline water evaporator 108 is filled lower than salt water
Operation is gone to step 906 by fluid injection position, processor 404.In step 906, the first valve 134 is opened, and second adjusts pipeline 144
It is connected to, pipeline 144 is adjusted by second by the part of refrigerant of first throttling device 112 and enters saline water evaporator 108,
To make the refrigerant for flowing into water evaporimeter 106 by first throttling device 112 reduce, so that the refrigeration of water evaporimeter 106
Agent liquid level reduces.It is followed by subsequent processing device 404 and operation is gone into step 902.
In step 904, if the refrigerant level in currently detected saline water evaporator 108 is filled not less than salt water
Operation is gone to step 908 by liquid level, processor 404.In step 908, the first valve 134 is closed, and being followed by subsequent processing device 404 will grasp
Go to step 520.
In addition, control device 302 is additionally configured to be stored in storage when the refrigerant level in saline water evaporator 108 is lower than
When salt water safety levels in device 414, control device 302 stops or does not start pump 132, thus in saline water evaporator 108
Refrigerant level be lower than salt water safety levels when protection pump 132.
It should also be noted that, although the evaporator in the refrigeration system 100 of the application is respectively water evaporimeter 106 and salt
Water evaporimeter 108, but those skilled in the art will be seen that, as long as the system with double evaporators may be by this Shen
Please in the first adjusting pipeline 142 and the second adjusting pipeline 144 liquid level of solution in two evaporators is adjusted.
Although the application will be described with reference to the specific embodiment shown in attached drawing, but it is to be understood that not
Under the spirit and scope and background of the application introduction, the refrigeration system of the application and method for controlling refrigeration system can
With there are many versions.It is public to change the application institute that art technology those of ordinary skill will additionally appreciate different modes
The CONSTRUCTED SPECIFICATION in embodiment opened, but these changes are each fallen in the application and spirit and scope of the claims.
Claims (11)
1. a kind of refrigeration system (100), comprising:
Water evaporimeter (106), the water evaporimeter (106) include water evaporimeter entrance (106a) and water evaporimeter outlet
(106b)；With
Saline water evaporator (108), the saline water evaporator (108) include saline water evaporator communication port (108a)；
It is characterized in that, the refrigeration system (100) further include:
First adjust pipeline (142), it is described first adjust pipeline (142) controllably by the saline water evaporator (108) with it is described
Water evaporimeter (106) is in fluid communication or disconnects, so that the refrigerant in the saline water evaporator (108) can be flowed to controllably
The water evaporimeter (106)；With
Second adjusts pipeline (144), and described second adjusts pipeline (144) controllably by the water evaporimeter (106) and the salt
Water evaporimeter (108) is in fluid communication or disconnects, so that the refrigerant in the water evaporimeter (106) can controllably flow to institute
State saline water evaporator (108).
2. refrigeration system (100) as described in claim 1, it is characterised in that:
The water evaporimeter (106) includes water evaporimeter communication port (106a ')；
The saline water evaporator communication port (108a) and the water evaporimeter communication port (106a ') are in fluid communication.
3. refrigeration system (100) as described in claim 1, it is characterised in that: the refrigeration system (100) further includes liquid level inspection
It surveys device (304,306)；
The liquid level detection device (304) is configured to the refrigerant level detected in the water evaporimeter (106) and mentions
Signal is detected for the refrigerant level of the water evaporimeter (106)；
The liquid level detection device (306) is configured to detect the refrigerant level in the saline water evaporator (108) simultaneously
The refrigerant level detection signal of the saline water evaporator (108) is provided.
4. refrigeration system (100) as claimed in claim 3, it is characterised in that: the refrigeration system (100) further includes control dress
Set (302)；
The control device (302) is configured to according to the water provided by the liquid level detection device (304,306)
The refrigerant level detection signal of evaporator (106) and the refrigerant level of the saline water evaporator (108) detect signal to control
Make it is described first adjust pipeline (142) and it is described second adjusting pipeline (144) be connected to and disconnection.
5. refrigeration system (100) as claimed in claim 4, it is characterised in that:
Evaporating pressure in the water evaporimeter (106) is higher than the evaporating pressure in the saline water evaporator (108)；
Described first is adjusted including pump (132) in pipeline (142), and the pump (132) includes pump intake (132a) and pump discharge
(132b), the pump intake (132a) and the saline water evaporator communication port (108a) are in fluid communication, the pump discharge (132b)
It is in fluid communication with the water evaporimeter entrance (106a), so that controlling pump (132) starting in the control device (302)
When, the refrigerant in the saline water evaporator (108) can be reduced；
Described second is adjusted including the first valve (134) in pipeline (144), and first valve (134) includes the first valve inlet
(134a) and the first valve outlet (134b), first valve inlet (134a) and water evaporimeter entrance (106a) fluid connect
Logical, first valve outlet (134b) and the saline water evaporator communication port (108a) are in fluid communication, so that in the control
Device (302) can reduce the refrigerant in the water evaporimeter (106) when controlling first valve (134) opening.
6. refrigeration system (100) as claimed in claim 5, it is characterised in that:
The control device (302) is configured as when the refrigerant level in the saline water evaporator (108) is lower than salt water security
When liquid level, the control device (302) stops or does not start the pump (132).
7. refrigeration system (100) as described in claim 1, it is characterised in that:
Described first is adjusted in pipeline (142) including injector.
8. refrigeration system (100) as claimed in claim 2, it is characterised in that: the refrigeration system (100) further include:
Compressor (102), the compressor (102) include suction port of compressor (102a) and compressor outlet (102b)；
Condenser (104), the condenser (104) include condenser inlet (104a) and condensator outlet (104b), described cold
Condenser entrance (104a) and the compressor outlet (102b) are in fluid communication；
First throttling device (112), the first throttling device (112) include first throttling device entrance (112a) and first segment
Device outlet (112b) is flowed, the first throttling device entrance (112a) and the condensator outlet (104b) are in fluid communication, institute
It states first throttling device outlet (112b) and the water evaporimeter entrance (106a) is in fluid communication；With
Second throttling device (114), the second throttling device (114) include second throttling device entrance (114a) and the second section
Device outlet (114b) is flowed, the second throttling device entrance (114a) and water evaporimeter communication port (the 106a ') fluid connect
Logical, the second throttling device outlet (114b) and the saline water evaporator communication port (108a) are in fluid communication.
9. a kind of method for controlling refrigeration system, the refrigeration system includes water evaporimeter (106) and saline water evaporator
(108), it is characterised in that include the following steps:
Pipeline (142) are adjusted by first controllably to connect the water evaporimeter (106) and the saline water evaporator (108) fluid
It is logical；
Pipeline (144) are adjusted by second controllably to connect the water evaporimeter (106) and the saline water evaporator (108) fluid
It is logical；
Detect the refrigerant level in the refrigerant level and the saline water evaporator (108) in the water evaporimeter (106)；
According to the system in the refrigerant level and the saline water evaporator (108) in the detected water evaporimeter (106)
Cryogen liquid level carries out one of following four operation operation:
Operation one: connection described first adjusts pipeline (142), so that the refrigerant in the saline water evaporator (108) can
Flow to the water evaporimeter (106)；
Operation two: connection described second adjusts pipeline (144), so that the refrigerant in the water evaporimeter (106) can flow
To the saline water evaporator (108)；
Operation three:, which disconnecting, or disconnects described first adjusts pipeline (142)；
Operation four:, which disconnecting, or disconnects described second adjusts pipeline (144).
10. the method as claimed in claim 9 for controlling refrigeration system, it is characterised in that:
The refrigeration system includes operating status, and the operating status includes aqueous mode and salt aqueous mode；
When aqueous mode under the operating status, and the refrigerant level in the water evaporimeter (106) is higher than the water
When the water highest liquid level of evaporator (106), the operation two is executed；Refrigerant level in the water evaporimeter (106) is not high
When the water highest liquid level of the water evaporimeter (106), the operation four is executed；
When aqueous mode under the operating status, and the refrigerant level in the water evaporimeter (106) is lower than the water
The water running liquid level of evaporator (106) and refrigerant level in the saline water evaporator (108) is higher than the salt water evaporation
When the salt water minimum liquid level of device (108), the operation one is executed；Refrigerant level in the water evaporimeter (106) is not less than
The water running liquid level of the water evaporimeter (106) or the refrigerant level in the saline water evaporator (108) are not higher than described
When the salt water minimum liquid level of saline water evaporator (108), the operation three is executed；
When salt aqueous mode under the operating status, and the refrigerant level in the saline water evaporator (108) is higher than institute
When stating the salt water running liquid level of saline water evaporator (108), the operation one is executed；Refrigeration in the saline water evaporator (108)
When agent liquid level is not higher than the salt water running liquid level of the saline water evaporator (108), the operation three is executed.
11. the method as claimed in claim 9 for controlling refrigeration system, it is characterised in that:
The refrigeration system includes standby mode, and the standby mode includes water ready mode and salt water ready mode；
When water ready mode in the said standby state, and the refrigerant level in the saline water evaporator (108) is higher than
When the salt water minimum liquid level of the saline water evaporator (108), the operation one is executed；System in the saline water evaporator (108)
When cryogen liquid level is not higher than the salt water minimum liquid level of the saline water evaporator (108), the operation three is executed；
When salt water ready mode in the said standby state, and the refrigerant level in the saline water evaporator (108) is low
When the salt water of the saline water evaporator (108) fills liquid level, the operation two is executed；In the saline water evaporator (108)
When refrigerant level fills liquid level not less than the salt water of the saline water evaporator (108), the operation four is executed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810432296.2A CN110425780A (en) | 2018-05-08 | 2018-05-08 | Refrigeration system and method for controlling refrigeration system |
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| CN201810432296.2A CN110425780A (en) | 2018-05-08 | 2018-05-08 | Refrigeration system and method for controlling refrigeration system |
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