CN105890226B - A kind of water source cold-heat alliance grade hot type water chiller-heater unit and its control method - Google Patents
A kind of water source cold-heat alliance grade hot type water chiller-heater unit and its control method Download PDFInfo
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- CN105890226B CN105890226B CN201510399524.7A CN201510399524A CN105890226B CN 105890226 B CN105890226 B CN 105890226B CN 201510399524 A CN201510399524 A CN 201510399524A CN 105890226 B CN105890226 B CN 105890226B
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Abstract
The invention discloses a kind of water source cold-heat alliance grade hot type water chiller-heater unit and its control methods, including multiple refrigeration systems and automatic control system, in such a way that innovation water source heat supply, cold and heat combined supply, progressive solution and classification cooling are combined, the water chiller-heater unit of current traditional cold and heat combined supply is solved the problems, such as；Compared with the water chiller-heater unit of traditional cold and heat combined supply, winter in the technical program summer energy normal operation, and in the case where reaching identical refrigeration and heating effect, the condensation temperature of prime refrigeration system is greatly lowered, promote the evaporating temperature of prime refrigeration system, it is energy saving to significantly promote the whole Energy Efficiency Ratio of water source cold-heat alliance grade hot type water chiller-heater unit；The technical program has many advantages, such as reasonable design, energy-efficient, control accuracy, stable and reliable operation, energy saving, reduce environmental pollution, and meets the requirement of " energy-saving and emission-reduction " policy and construction of energy economizing type, friendly environment society that current country advocates.
Description
Technical field
The present invention relates to a kind of water chiller-heater unit more particularly to a kind of water source cold-heat alliance grade hot type water chiller-heater units
And its control method.
Background technology
The public buildings such as current hotel, dining room, hospital, condo, natatorium, large enterprise need cooling simultaneously
Hot-water supply is needed throughout the year, in summer, these public buildings supply idle call chilled water or technique chilled water, while being also required to carry
For bathing, daily life hot water or technique hot water.In winter, their demand heating waters, technique hot water, bathing and daily life
Hot water is applied flexibly, while also demand provides cold water, equipment cooling water.
At present had part can cold and heat combined supply water chiller-heater unit, although hot water or cold water can be provided simultaneously, pass
The water chiller-heater unit of system cold and heat combined supply, part only considers that hot and cold water is supplied simultaneously, when not considering that winter does not need air conditioner cold water, if
It is standby to lose cold water heat source source, it cannot achieve and hot water demand is provided separately, equipment winter is unable to operate normally；Though part considers
Hot and cold water is supplied simultaneously and single hot water is supplied, and but single-stage type is used to design, such as in the case of needing 60 DEG C of life heat, complete machine
Condensation temperature need up to 63 ~ 65 DEG C, the compressor operating efficiency so as to cause single-stage type air conditioner and water heater is at a fairly low, still
Hot and cold water can not so be greatly lowered while needing required energy consumption.
As it can be seen that the water chiller-heater unit of traditional cold and heat combined supply, part only consider that hot and cold water is supplied simultaneously, does not consider list at present
Heat supply, causes winter that can not be used without the occasion of cold water；Though part considers hot and cold water while supply and single hot water supply
It answers, but uses single-stage mode of heating, compressor operating efficiency is low, energy consumption is big, does not meet " energy-saving and emission-reduction " that current country advocates
The requirement of policy and construction of energy economizing type, friendly environment society.
Therefore, the existing technology needs to be improved and developed.
Invention content
The purpose of the present invention is to provide a kind of water source cold-heat alliance grade hot type water chiller-heater unit and its control methods, it is intended to
The water chiller-heater unit for solving existing cold and heat combined supply can not achieve single heat supply or realize single heat for using single-stage heating side at once
Formula leads to the problem that compressor operating efficiency is low, energy consumption is big.
Technical scheme is as follows：
A kind of water source cold-heat alliance grade hot type water chiller-heater unit, wherein including the first refrigeration system, the second refrigeration system,
Third refrigeration system, the 4th refrigeration system and automatic control system, first refrigeration system, the second refrigeration system, third system
The structure setting of cooling system and the 4th refrigeration system is consistent；The cold water evaporator of first refrigeration system is cold with the second refrigeration system
Water evaporimeter connects, and the cold water evaporator of the second refrigeration system is connect with the cold water evaporator of third refrigeration system, third refrigeration
The cold water evaporator of system is connect with the cold water evaporator of the 4th refrigeration system；The condenser of first refrigeration system and the second refrigeration
The condenser of system connects, and the condenser of the second refrigeration system is connect with the condenser of third refrigeration system, third refrigeration system
Condenser connect with the condenser of the 4th refrigeration system；The water source evaporator of first refrigeration system, the water of the second refrigeration system
The water source evaporator of source evaporator, the water source evaporator of third refrigeration system and the 4th refrigeration system respectively by water inlet pipe, go out
Water pipe is connected in parallel, and water inlet pipe connects the second inflow temperature sensor, and outlet pipe connects the first leaving water temperature sensors, first-class
Amount protector and water source water pump, the water inlet of the condenser of the first refrigeration system are sequentially connected the first inflow temperature sensor and heat
Water pump, the cold water evaporator water outlet connection chilled water antifreeze protector of the first refrigeration system, the second leaving water temperature sensors and
Second flow protector, the discharge outlet connection third leaving water temperature sensors and third flow of the condenser of the 4th refrigeration system are protected
Device is protected, the water inlet of the cold water evaporator of the 4th refrigeration system connects third inflow temperature sensor and speed governing refrigerant water pump, the
The water source evaporator and the 4th of the water source evaporator of one refrigeration system, the water source evaporator third refrigeration system of the second refrigeration system
The water source evaporator of refrigeration system all connects water source antifreeze protector respectively；
The automatic control system includes central controller and sensor data acquisition subsystem, the second inflow temperature sensing
Device, the first leaving water temperature sensors, first flow protector, the first inflow temperature sensor, chilled water antifreeze protector, second
Leaving water temperature sensors, second flow protector, third leaving water temperature sensors, third traffic protection device, third inflow temperature
Sensor and water source antifreeze protector are all connect with sensor data acquisition subsystem, sensor data acquisition subsystem and center
Controller connects, and water source water pump, heat-exchanger pump and speed governing refrigerant water pump all connect with central controller, by central controller controls the
One refrigeration system, the second refrigeration system, third refrigeration system and the 4th refrigeration system are run as required.
The water source cold-heat alliance grade hot type water chiller-heater unit, wherein first refrigeration system includes the first compression
Machine, the first condenser, the first qi leel, the first water source evaporator and the first cold water evaporator, first compressor one end and the
One condenser one end connects, the connection of the first condenser other end the first cold water evaporator one end, the first cold water evaporator other end
Connect with first qi leel one end, the first qi leel other end is connect with the first compressor other end, first water source evaporator one end with
The first condenser other end connects, and the first water source evaporator other end is connect with first qi leel one end；First compressor with
Central controller connects.
The water source cold-heat alliance grade hot type water chiller-heater unit, wherein first water source evaporator and the first qi leel
Between be provided with the first water source evaporator check valve, be provided between the first cold water evaporator and the first qi leel the first cold water evaporation
Device check valve；The first cold water evaporator solenoid valve is provided between first condenser and the first cold water evaporator, first is cold
Be provided with the first water source evaporator solenoid valve between condenser and the first water source evaporator, the first cold water evaporator solenoid valve and
First water source evaporator solenoid valve is all connect with central controller；Between the water outlet and water inlet of first water source evaporator
It is provided with the first water source evaporator expansion valve, the steaming of the first cold water is provided between the water outlet and water inlet of the first cold water evaporator
Send out device expansion valve.
A kind of control method of water source cold-heat alliance grade hot type water chiller-heater unit as described in above-mentioned any one, wherein
Specifically include following steps：
Step A00：Operational mode is inputted by display operating panel, setup parameter opens water source cold-heat alliance grade hot type
Water chiller-heater unit；
Step B00：Second inflow temperature sensor, the first leaving water temperature sensors, the first inflow temperature sensor, second
Leaving water temperature sensors, third leaving water temperature sensors and third inflow temperature sensor monitor each disengaging coolant-temperature gage and anti-in real time
It is fed to sensor data acquisition subsystem, first flow protector, second flow protector and third traffic protection device are supervised in real time
It surveys the flow of whole system and feeds back to sensor data acquisition subsystem, chilled water antifreeze protector and water source antifreeze protector
The temperature of real-time monitoring system simultaneously feeds back to sensor data acquisition subsystem；
Step C00：Sensor data acquisition subsystem is the data feedback being collected into central controller；
Step D00：Central controller passes through discriminatory analysis, the first refrigeration system of control, the second refrigeration system, third refrigeration
The startup or shutdown of system and the 4th refrigeration system control entire unit according to different operational modes and run as required, same to time control
Water source water pump, heat-exchanger pump and speed governing refrigerant water pump processed are run as requested.
The control method of the water source cold-heat alliance grade hot type water chiller-heater unit, wherein the step A00- steps D00
In, central controller controls the first refrigeration system, the second refrigeration system, third refrigeration system and the 4th refrigeration by following steps
The startup or shutdown of system：
Step a11：Operational mode is inputted by display operating panel, sets four start-up temperatures, respectively TOpen 1、TOpen 2、
TOpen 3And TOpen 4, and TOpen 1＜ TOpen 2＜ TOpen 3＜ TOpen 4, inflow temperature that the first inflow temperature sensor monitors is set as TA, set machine
Group hot water effluent's temperature settings are TB is set, it is T that third leaving water temperature sensors, which measure practical leaving water temperature,B , set unit refrigerant
Water leaving water temperature setting value is TD is set, it is T that the second leaving water temperature sensors, which measure practical leaving water temperature,D , chilled water is antifreeze sets for setting
Definite value is TRefrigerant is set, it is T that chilled water antifreeze protector, which measures practical chilled water leaving water temperature,Refrigerant, set the antifreeze setting value in water source
TWater source is set, it is T that water source antifreeze protector, which measures practical water source leaving water temperature,Water source, open air source cold-hot alliance grade hot type water chiller/heater
Group；
Step b11：The inflow temperature real-time monitored is fed back to sensor data acquisition by the first inflow temperature sensor
Subsystem, third leaving water temperature sensors measure practical leaving water temperature and feed back to sensor data acquisition subsystem, the second water outlet
The practical leaving water temperature of temperature sensor measurement feeds back to sensor data acquisition subsystem；
Step c11：Sensor data acquisition subsystem is the data feedback being collected into central controller；
Step d11：Central controller judges TAWith TOpen 1、TOpen 2、TOpen 3And TOpen 4Between size, if TA＜ TOpen 1, execute step
D12, if TOpen 1＜ TA＜Open 2, step d13 is executed, if TOpen 2＜ TA＜Open 3, step d14 is executed, if TOpen 3＜ TA＜Open 4, execute step
D15, if TA＞ TOpen 4, execute step d16；
Step d12：The first refrigeration system of central controller controls, the second refrigeration system, third refrigeration system and the 4th system
Cooling system is actuated for heating operation；
Step d13：The second refrigeration system of central controller controls and third refrigeration system are actuated for heating operation, and first
Refrigeration system and the 4th refrigeration system are shut down；
Step d14：Central controller controls third refrigeration system and the 4th refrigeration system are actuated for heating operation, and first
Refrigeration system and the second refrigeration system are shut down；
Step d15：The 4th refrigeration system of central controller controls is actuated for heating operation, the first refrigeration system, second
Refrigeration system and third refrigeration system are shut down；
Step d16：The first refrigeration system of central controller controls, the second refrigeration system, third refrigeration system and the 4th system
Cooling system is shut down.
The control method of the water source cold-heat alliance grade hot type water chiller-heater unit, wherein when the operation of step a11 inputs
When pattern is cold and heat combined supply operational mode, include the following steps：
Step e11：The water source evaporator solenoid valve for the refrigeration system that central controller controls have been started up is closed, chilled water
Evaporator solenoid valve is opened, and is controlled the refrigeration system not started and is remained shut off.
The control method of the water source cold-heat alliance grade hot type water chiller-heater unit, wherein when the operation of step a11 inputs
When pattern is water source list hot operational mode, include the following steps：
Step e21：The water source evaporator solenoid valve for the refrigeration system that central controller controls have been started up is opened, chilled water
Evaporator solenoid valve is closed, and is controlled the refrigeration system not started and is remained shut off.
The control method of the water source cold-heat alliance grade hot type water chiller-heater unit, wherein in cold and heat combined supply operational mode
Or under the hot operational mode of water source list, central controller ensures that hot water effluent's temperature reaches setting value by following steps：
Step f11：Central controller judges TBWith TB is setSize, if TB ＜ TB is set, step f12 is executed, if TB ＞ TB is set, hold
Row step f13；
Step f12：The compressor for the refrigeration system that central controller controls have been started up carries out load operating, and control does not have
The refrigeration system of startup remains shut off, and ensures that hot water effluent's temperature reaches setting value；
Step f13：The compressor for the refrigeration system that central controller controls have been started up carries out unloading operation, and control does not have
The refrigeration system of startup remains shut off, and ensures that hot water effluent's temperature reaches setting value.
The control method of the water source cold-heat alliance grade hot type water chiller-heater unit, wherein in cold and heat combined supply operational mode
Under, central controller ensures that hot water effluent's temperature reaches setting value by following steps：
Step f21：Central controller judges TDWith TD is setSize, if TD＜ TD is set, step f22 is executed, if TD＞ TD is set,
Execute step f23；
Step f22：Central controller controls speed governing refrigerant water pump 616 increases water pump water outlet flow, ensures chilled water water outlet
Temperature reaches setting value；
Step f23：Central controller controls speed governing refrigerant water pump 616 reduces water pump water outlet flow, ensures chilled water water outlet
Temperature reaches setting value.
The control method of the water source cold-heat alliance grade hot type water chiller-heater unit, wherein central controller passes through following
Step ensures the antifreeze operation of entire water source cold-heat alliance grade hot type water chiller-heater unit：
Step g11：Central controller judges T respectivelyRefrigerant is setWith TRefrigerant、TWater source is setWith TWater sourceSize, if TRefrigerant is set<TRefrigerantOr TWater source is set<
TWater source, step g12 is executed, if TRefrigerant is set>TRefrigerantOr TWater source is set>TWater source, execute step g13；
Step g12：The entire water source cold-heat alliance grade hot type water chiller-heater unit of central controller controls shuts down operation；
Step g13：The entire water source cold-heat alliance grade hot type water chiller-heater unit of central controller controls starts operation.
Beneficial effects of the present invention：The present invention passes through a kind of water source cold-heat alliance grade hot type water chiller-heater unit of offer and its control
Method processed, including the first refrigeration system, the second refrigeration system, third refrigeration system, the 4th refrigeration system and automatic control system,
By the water source heat supply of innovation, cold and heat combined supply, progressive solution and classification it is cooling be combined in the way of, the current biography of effective solution
The water chiller-heater unit part of the cold and heat combined supply of system only considers that hot and cold water is supplied simultaneously, does not consider single heat supply, winter is caused to be not necessarily to
The occasion of cold water can not use；Though part considers hot and cold water and supplies simultaneously and the supply of single hot water, using single-stage mode of heating,
Compressor operating efficiency is low, the big problem of energy consumption；Compared with the water chiller-heater unit of traditional cold and heat combined supply, the winter in the technical program summer
Energy normal operation, and in the case where reaching identical refrigeration and heating effect, the condensation of prime refrigeration system is greatly lowered
Temperature promotes the evaporating temperature of prime refrigeration system, to significantly promote water source cold-heat alliance grade hot type water chiller-heater unit
Whole Energy Efficiency Ratio, it is energy saving；The technical program has reasonable design, energy-efficient, control accuracy, stable and reliable operation etc. excellent
Point, it is energy saving, reduce environmental pollution, meet " energy-saving and emission-reduction " policy and construction of energy economizing type, ring that current country advocates
The requirement of border friendly society.
Description of the drawings
Fig. 1 is the connection diagram of water source cold-heat alliance grade hot type water chiller-heater unit in the present invention.
Fig. 2 is the step flow chart of the control method of water source cold-heat alliance grade hot type water chiller-heater unit in the present invention.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer and more explicit, develop simultaneously embodiment pair referring to the drawings
The present invention is further described.
As shown in Figure 1, this water source cold-heat alliance grade hot type water chiller-heater unit freezes including the first refrigeration system 100, second
System 200, third refrigeration system 300, the 4th refrigeration system 400 and automatic control system, first refrigeration system 100,
Two refrigeration systems 200, third refrigeration system 300 are consistent with the structure setting of the 4th refrigeration system 400；First refrigeration system 100
Cold water evaporator connect with the cold water evaporator of the second refrigeration system 200, the cold water evaporator of the second refrigeration system 200 and
The cold water evaporators of three refrigeration systems 300 connects, the cold water evaporator of third refrigeration system 300 and the 4th refrigeration system 400
Cold water evaporator connects；The condenser of first refrigeration system 100 is connect with the condenser of the second refrigeration system 200, the second refrigeration
The condenser of system 200 is connect with the condenser of third refrigeration system 300, the condenser of third refrigeration system 300 and the 4th system
The condenser of cooling system 400 connects；The water source evaporation of the water source evaporator of first refrigeration system 100, the second refrigeration system 200
The water source evaporator of device, the water source evaporator of third refrigeration system 300 and the 4th refrigeration system 400 respectively by water inlet pipe, go out
Water pipe is connected in parallel, water inlet pipe the second inflow temperature sensor 608 of connection, the first leaving water temperature sensors 609 of outlet pipe connection,
First flow protector 610 and water source water pump 617, the water inlet of the condenser of the first refrigeration system 100 be sequentially connected first into
The cold water evaporator water outlet of water temperature sensor 602 and heat-exchanger pump 615, the first refrigeration system 100 connects the antifreeze guarantor of chilled water
Protect device 611, the second leaving water temperature sensors 606 and second flow protector 607, the row of the condenser of the 4th refrigeration system 400
The mouth of a river connects third leaving water temperature sensors 603 and third traffic protection device 604, the cold water evaporator of the 4th refrigeration system 400
Water inlet connection third inflow temperature sensor 605 and speed governing refrigerant water pump 616, the water source evaporation of the first refrigeration system 100
Device, the second refrigeration system 200 water source evaporator third refrigeration system 300 water source evaporator and the 4th refrigeration system 400
Water source evaporator all connects water source antifreeze protector 612 respectively；The automatic control system includes central controller and sensor
Data acquisition subsystem, the second inflow temperature sensor 608, the first leaving water temperature sensors 609, first flow protector 610,
First inflow temperature sensor 602, chilled water antifreeze protector 611, the second leaving water temperature sensors 606, second flow protection
Device 607, third leaving water temperature sensors 603, third traffic protection device 604, third inflow temperature sensor 605 and water source are antifreeze
Protector 612 is all connect with sensor data acquisition subsystem, and sensor data acquisition subsystem is connect with central controller, water
Source water pump 617, heat-exchanger pump 615 and speed governing refrigerant water pump 616 are all connect with central controller, are made by central controller controls first
Cooling system 100, the second refrigeration system 200, third refrigeration system 300 and the 4th refrigeration system 400 are run as required.
In order to facilitate human-computer interactive control is carried out, the automatic control system further includes display operating panel, the display
Operation panel is connect with central controller, is inputted regulating command to central controller by display operating panel, is controlled by center
Device controls entire air source cold-hot alliance grade hot type water chiller-heater unit and runs as required.
First refrigeration system 100 includes the first compressor 101, the first condenser 102, the first qi leel 111, the first water
Source evaporator 107 and the first cold water evaporator 108, described first compressor, 101 one end are connect with 102 one end of the first condenser,
First condenser, 102 the first cold water of other end evaporator, 108 one end connects, 108 other end of the first cold water evaporator and the first gas
The connection of 111 one end, 111 other end of the first qi leel is divided to be connect with 101 other end of the first compressor, the first water source evaporator 107 1
End is connect with 102 other end of the first condenser, and 107 other end of the first water source evaporator is connect with 111 one end of the first qi leel；It is described
First compressor 101 is connect with central controller.
The refrigerant reflux of first refrigeration system 100 in order to prevent, first water source evaporator 107 and the first qi leel
It is provided with the first water source evaporator check valve 109 between 111, is provided between the first cold water evaporator 108 and the first qi leel 111
First cold water evaporator check valve 110.
Switch between operating modes for the ease of the first refrigeration system 100 of control, first condenser 102 and first
The first cold water evaporator solenoid valve 104, the first condenser 102 and the first water source evaporator are provided between cold water evaporator 108
The first water source evaporator solenoid valve 103 is provided between 107, the first cold water evaporator solenoid valve 104 and the first water source steam
Hair device solenoid valve 103 is all connect with central controller.
In order to make coolant throttle and control cold medium flux into evaporator, the water outlet of first water source evaporator 107
It is provided with the first water source evaporator expansion valve 105, the water outlet and water inlet of the first cold water evaporator 108 between mouth and water inlet
Between be provided with the first cold water evaporator expansion valve 106.
In this water source cold-heat alliance grade hot type water chiller-heater unit, the flow of hot water heating is：Hot water side is intake, and is introduced into the
The condenser of one refrigeration system 100 carries out level-one heating, absorbs the exhaust gas heat level-one liter of 100 compressor of the first refrigeration system
Temperature, then, the condenser into the second refrigeration system 200 carry out three-level heating, absorb the row of 200 compressor of the second refrigeration system
Gas heat two level heats up, and then, the condenser into third refrigeration system 300 carries out three-level heating, absorbs third refrigeration system
The exhaust gas heat three-level of 300 compressors heats up, and then, the condenser into the 4th refrigeration system 400 carries out level Four heating, absorbs
The exhaust gas heat level Four of 4th refrigeration system, 400 compressor heats up, and after level Four heat temperature raising, reaches after sending water set temperature
It send to using terminal and is used.
In this water source cold-heat alliance grade hot type water chiller-heater unit, the flow of refrigerant water cooling is：Chilled water initially enters
The refrigerant water evaporimeter of four refrigeration systems 400 carries out level-one cooling, absorbs the liquid refrigerants after the throttling of the 4th refrigeration system 400 and steams
The cold of hair carries out level-one cooling；Two level cooling is carried out subsequently into the refrigerant water evaporimeter of third refrigeration system 300, is absorbed
The cold of liquid refrigerants evaporation after the throttling of third refrigeration system 300, carries out two level cooling；Subsequently into the second refrigeration system
200 refrigerant water evaporimeter carries out three-level cooling, absorbs the cold of the liquid refrigerants evaporation after the throttling of the second refrigeration system 200,
Carry out three-level cooling；Level Four cooling is carried out subsequently into the refrigerant water evaporimeter of the first refrigeration system 100, absorbs the first refrigeration system
The cold of liquid refrigerants evaporation after 100 throttling of system, carries out level Four cooling, is sent to using terminal after reaching chilled water setpoint temperature
It is used.
As shown in Fig. 2, a kind of control method of water source cold-heat alliance grade hot type water chiller-heater unit as described above, specifically
Include the following steps：
Step A00：Operational mode is inputted by display operating panel, setup parameter opens water source cold-heat alliance grade hot type
Water chiller-heater unit；
Step B00：Second inflow temperature sensor 608, the first leaving water temperature sensors 609, the first inflow temperature sensing
Device 602, the second leaving water temperature sensors 606, third leaving water temperature sensors 603 and third inflow temperature sensor 605 are real-time
It monitors each disengaging coolant-temperature gage and feeds back to sensor data acquisition subsystem, first flow protector 610, second flow protector
607 and third traffic protection device 604, the flow for monitoring whole system in real time simultaneously feeds back to sensor data acquisition subsystem, cold
The temperature of 612 real-time monitoring system of matchmaker's water antifreeze protector 611 and water source antifreeze protector simultaneously feeds back to sensor data acquisition
Subsystem；
Step C00：Sensor data acquisition subsystem is the data feedback being collected into central controller；
Step D00：Central controller is by discriminatory analysis, the first refrigeration system 100 of control, the second refrigeration system 200, the
The startup or shutdown of three refrigeration systems 300 and the 4th refrigeration system 400 control entire unit as required according to different operational modes
Operation, while controlling water source water pump 617, heat-exchanger pump 615 and speed governing refrigerant water pump 616 and running as requested.
Specifically, in the step A00- steps D00, central controller controls the first refrigeration system by following steps
100, the startup or shutdown of the second refrigeration system 200, third refrigeration system 300 and the 4th refrigeration system 400：
Step a11：Operational mode is inputted by display operating panel, sets four start-up temperatures, respectively TOpen 1、TOpen 2、
TOpen 3And TOpen 4, and TOpen 1＜ TOpen 2＜ TOpen 3＜ TOpen 4, inflow temperature that the first inflow temperature sensor 602 monitors is set as TAIf
It is T to determine unit hot water effluent's temperature settingsB is set, it is T that third leaving water temperature sensors 603, which measure practical leaving water temperature,B , setting
Unit chilled water leaving water temperature setting value is TD is set, it is T that the second leaving water temperature sensors 606, which measure practical leaving water temperature,D , setting
The antifreeze setting value of chilled water is TRefrigerant is set, it is T that chilled water antifreeze protector 611, which measures practical chilled water leaving water temperature,Refrigerant, set water
The antifreeze setting value T in sourceWater source is set, it is T that water source antifreeze protector 612, which measures practical water source leaving water temperature,Water source, open air source cold-hot connection
For grade hot type water chiller-heater unit；
Step b11：The inflow temperature real-time monitored is fed back to sensing data and adopted by the first inflow temperature sensor 602
Subsystem, third leaving water temperature sensors 603 measure practical leaving water temperature and feed back to sensor data acquisition subsystem, and second
Leaving water temperature sensors 606 measure practical leaving water temperature and feed back to sensor data acquisition subsystem；
Step c11：Sensor data acquisition subsystem is the data feedback being collected into central controller；
Step d11：Central controller judges TAWith TOpen 1、TOpen 2、TOpen 3And TOpen 4Between size, if TA＜ TOpen 1, execute step
D12, if TOpen 1＜ TA＜Open 2, step d13 is executed, if TOpen 2＜ TA＜Open 3, step d14 is executed, if TOpen 3＜ TA＜Open 4, execute step
D15, if TA＞ TOpen 4, execute step d16；
Step d12：Central controller controls the first refrigeration system 100, the second refrigeration system 200, third refrigeration system 300
It is actuated for heating operation with the 4th refrigeration system 400；
Step d13：The second refrigeration system of central controller controls 200 and third refrigeration system 300 are actuated for heating fortune
Row, the first refrigeration system 100 and the 4th refrigeration system 400 are shut down；
Step d14：Central controller controls third refrigeration system 300 and the 4th refrigeration system 400 are actuated for heating fortune
Row, the first refrigeration system 100 and the second refrigeration system 200 are shut down；
Step d15：The 4th refrigeration system 400 of central controller controls is actuated for heating operation, the first refrigeration system
100, the second refrigeration system 200 and third refrigeration system 300 are shut down；
Step d16：Central controller controls the first refrigeration system 100, the second refrigeration system 200, third refrigeration system 300
It is shut down with the 4th refrigeration system 400.
When central controller controls the first refrigeration system 100, the second refrigeration system 200, third refrigeration through the above steps
After system 300 and the 4th refrigeration system 400 start or shut down, central controller is controlled according to the operational mode that step a11 is inputted
Unit is run as required, specific as follows：
When the operational mode of step a11 inputs is cold and heat combined supply operational mode, include the following steps：
Step e11：The water source evaporator solenoid valve for the refrigeration system that central controller controls have been started up is closed, chilled water
Evaporator solenoid valve is opened, and is controlled the refrigeration system not started and is remained shut off.
Under cold and heat combined supply operational mode, the cooling flow of entire unit is：The refrigerant vapour of low-temp low-pressure passes through respectively
After crossing the compressor for the refrigeration system having been started up, high temperature and pressure superheated vapor is formed, into the refrigeration system having been started up
Condenser be cooled into refrigerant subcooled liquid, refrigerant subcooled liquid passes through each refrigeration system having been started up successively
Refrigerant water evaporimeter solenoid valve, the chilled water evaporator expansion valve of system form low temperature and low pressure liquid after throttling, subsequently into each
The refrigerant water evaporimeter for the refrigeration system having been started up is evaporated the heat for absorbing idle call chilled water, forms low-temp low-pressure and steams
Gas, then by the refrigerant water evaporimeter check valve of each refrigeration system having been started up, pass through each refrigeration system having been started up
The qi leel of system returns to the air entry of the compressor of each refrigeration system having been started up.
When the operational mode of step a11 inputs operational mode hot for water source list, include the following steps：
Step e21：The water source evaporator solenoid valve for the refrigeration system that central controller controls have been started up is opened, chilled water
Evaporator solenoid valve is closed, and is controlled the refrigeration system not started and is remained shut off.
Under the hot operational mode of water source list, the cooling flow of entire unit is：The refrigerant vapour of low-temp low-pressure passes through respectively
After crossing the compressor for the refrigeration system having been started up, formed high temperature and pressure superheated vapor, the refrigeration system having been started up it is cold
Condenser carries out being cooled into refrigerant subcooled liquid, water source of the refrigerant subcooled liquid Jing Guo each refrigeration system having been started up
Low temperature and low pressure liquid is formed after evaporator solenoid valve, the throttling of water source evaporator expansion valve, subsequently into each system having been started up
The water source evaporator of cooling system is evaporated the heat for absorbing air, forms low-temp low-pressure steam, then have been started up by each
The water source evaporator check valve of refrigeration system each opened is returned to by the qi leel of each refrigeration system having been started up
The air entry of the compressor of dynamic refrigeration system.
Under cold and heat combined supply operational mode or the hot operational mode of water source list, central controller ensures hot water by following steps
Leaving water temperature reaches setting value：
Step f11：Central controller judges TBWith TB is setSize, if TB ＜ TB is set, step f12 is executed, if TB ＞ TB is set, hold
Row step f13；
Step f12：The compressor for the refrigeration system that central controller controls have been started up carries out load operating, and control does not have
The refrigeration system of startup remains shut off, and ensures that hot water effluent's temperature reaches setting value；
Step f13：The compressor for the refrigeration system that central controller controls have been started up carries out unloading operation, and control does not have
The refrigeration system of startup remains shut off, and ensures that hot water effluent's temperature reaches setting value.
Under cold and heat combined supply operational mode, central controller ensures that hot water effluent's temperature reaches setting by following steps
Value：
Step f21：Central controller judges TDWith TD is setSize, if TD＜ TD is set, step f22 is executed, if TD＞ TD is set,
Execute step f23；
Step f22：Central controller controls speed governing refrigerant water pump 616 increases water pump water outlet flow, ensures chilled water water outlet
Temperature reaches setting value；
Step f23：Central controller controls speed governing refrigerant water pump 616 reduces water pump water outlet flow, ensures chilled water water outlet
Temperature reaches setting value.
Central controller ensures the antifreeze operation of entire water source cold-heat alliance grade hot type water chiller-heater unit by following steps：
Step g11：Central controller judges T respectivelyRefrigerant is setWith TRefrigerant、TWater source is setWith TWater sourceSize, if TRefrigerant is set<TRefrigerantOr TWater source is set<
TWater source, step g12 is executed, if TRefrigerant is set>TRefrigerantOr TWater source is set>TWater source, execute step g13；
Step g12：The entire water source cold-heat alliance grade hot type water chiller-heater unit of central controller controls shuts down operation；
Step g13：The entire water source cold-heat alliance grade hot type water chiller-heater unit of central controller controls starts operation.
This technology method has the following advantages that compared with prior art：
1, the water chiller-heater unit of traditional cold and heat combined supply, part only consider that hot and cold water is supplied simultaneously, does not consider that winter is not required to
When wanting air conditioner cold water, hot water situation can not be singly provided, winter is unable to operate normally.
The technical program can produce hot water and idle call chilled water simultaneously, can also individually produce hot water, machine using water source
There are two types of operational modes for group, including：Cold and heat combined supply operational mode and the hot operational mode of water source list.
When summer needs hot and cold water simultaneously, unit operation cold and heat combined supply operational mode absorbs the heat of cold water, generates heat
Water, while hot and cold water is produced, it is energy saving；When winter needs hot water without using air conditioner cold water, only, unit operation water source list heat
Operational mode absorbs the heat at heat source side water source, only produces hot water；To realize winter and summer can with the function of heat supply,
Meanwhile summer can also supply air conditioner cold water, kill two birds with one stone.
2, the water chiller-heater unit of traditional cold and heat combined supply, though part considers hot and cold water while supplying and water source list hot water
Supply, but use single-stage type design, such as need 60 DEG C life heat in the case of, the condensation temperature of complete machine needs up to 63 ~ 65 DEG C,
Compressor operating efficiency so as to cause single-stage type air conditioner and water heater is at a fairly low, and hot and cold water still can not be greatly lowered simultaneously
Need required energy consumption.
The hot water of the technical program uses level Four refrigeration system stepped heating, every grade of refrigeration system heating to use recuperation of heat again
Device and condenser two-stage are heated, and compared with traditional single-stage single condenser type air conditioner and water heater, such as need 60 DEG C of lives
In the case of heat, by taking the heating of fourth stage refrigeration system as an example, delivery temperature reaches 90 ~ 95 DEG C at this time, at this time sensible heat point total amount of heat
20%, sensible heat can about generate 2 DEG C of Wen Sheng, therefore the leaving water temperature of condenser is 58 DEG C, so, the condensation of fourth stage refrigeration system
In the case of temperature can only reach 61 ~ 63 DEG C namely identical leaving water temperature, condensing pressure equally 2 DEG C of the decline of remaining system is whole
The condensation temperature that refrigeration system is reduced on body, it is energy saving to improve the Energy Efficiency Ratio of complete machine.
3, traditional water chiller-heater unit is designed using single-stage evaporator, such as in the case of needing 7 DEG C of chilled waters, the steaming of complete machine
It sends out temperature to need down to 2 ~ 5 DEG C, the compressor operating efficiency so as to cause single-stage type handpiece Water Chilling Units is at a fairly low, still can not be big
Energy consumption needed for amplitude reduction chilled water.
The evaporator of the technical program uses level Four refrigeration system, the design method of grade cold type cold with traditional single-stage type
Hot water units are compared, such as in the case of needing 7 DEG C of chilled waters, divide level Four refrigeration system Cooling Design step by step, except rear class system
Evaporating temperature needs outside down to 2 ~ 5 DEG C, and the condensing pressure of remaining system can be at 4.5 ~ 7.5 DEG C, greatly improve earlier stages system
The evaporating temperature of cooling system, it is energy saving to significantly improve the Energy Efficiency Ratio of complete machine.
4, the technical program control accuracy is high, and central control system is set according to hot water effluent's temperature of display operating panel
The input requirements such as fixed, chilled water water outlet temperature setting acquire the hot water in actual motion by sensor data acquisition subsystem
Leaving water temperature, chilled water go out the data such as temperature, calculate and control each execution system automatically, four compressors of control, heat-exchanger pump and
The start-stop or load proportion of refrigerant water pump, it is ensured that the hot water or cold water temperature supplied at any time reaches the need of actual use
It asks, effectively improves the leaving water temperature control accuracy of hot and cold water.
In conclusion the technical program efficiently solves the water chiller-heater unit of current traditional cold and heat combined supply, part is only
Consider that hot and cold water is supplied simultaneously, does not consider single heat supply, cause winter that can not be used without the occasion of cold water；Though part considers
Hot and cold water is supplied simultaneously and single hot water is supplied, but uses single-stage mode of heating, and compressor operating efficiency is low, and energy consumption is big to ask
Topic；The creative mode for using water source heat supply, cold and heat combined supply and progressive solution and being combined with cooling of the technical program, is realized
The grade hot type energy saving flexible method of operation that cold and heat combined supply operational mode and the hot operational mode of water source list are combined realizes summer
The hot energy-saving run of cold and heat combined supply grade, the winter hot energy-saving run of water source list thermal level, the water chiller-heater unit phase with traditional cold and heat combined supply
Than, Xia Dongjun can normal operation, Energy Efficiency Ratio higher is more energy saving, reasonable design, energy-efficient, operational mode switching flexibly,
Control accuracy and degree of intelligence height, stable and reliable operation;The technical program is energy saving, reduces environmental pollution, and meets country and advocates
Energy saving and environmental protection policy, have important economy and social effect.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can
With improvement or transformation based on the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect range.
Claims (9)
1. a kind of water source cold-heat alliance grade hot type water chiller-heater unit, which is characterized in that including the first refrigeration system, the second refrigeration system
System, third refrigeration system, the 4th refrigeration system and automatic control system, first refrigeration system, the second refrigeration system, third
Refrigeration system is consistent with the structure setting of the 4th refrigeration system；The cold water evaporator of first refrigeration system and the second refrigeration system
Cold water evaporator connects, and the cold water evaporator of the second refrigeration system is connect with the cold water evaporator of third refrigeration system, third system
The cold water evaporator of cooling system is connect with the cold water evaporator of the 4th refrigeration system；The condenser of first refrigeration system and the second system
The condenser of cooling system connects, and the condenser of the second refrigeration system is connect with the condenser of third refrigeration system, third refrigeration system
The condenser of system is connect with the condenser of the 4th refrigeration system；The water source evaporator of first refrigeration system, the second refrigeration system
The water source evaporator of water source evaporator, the water source evaporator of third refrigeration system and the 4th refrigeration system respectively by water inlet pipe,
Outlet pipe is connected in parallel, and water inlet pipe connects the second inflow temperature sensor, and outlet pipe connects the first leaving water temperature sensors, first
Traffic protection device and water source water pump, the water inlet of the condenser of the first refrigeration system be sequentially connected the first inflow temperature sensor and
Heat-exchanger pump, cold water evaporator water outlet connection chilled water antifreeze protector, the second leaving water temperature sensors of the first refrigeration system
With second flow protector, the discharge outlet connection third leaving water temperature sensors and third flow of the condenser of the 4th refrigeration system
Protector, the water inlet connection third inflow temperature sensor and speed governing refrigerant water pump of the cold water evaporator of the 4th refrigeration system,
The water source evaporator of first refrigeration system, the water source evaporator of the water source evaporator third refrigeration system of the second refrigeration system and
The water source evaporator of four refrigeration systems all connects water source antifreeze protector respectively；
The automatic control system includes central controller and sensor data acquisition subsystem, the second inflow temperature sensor,
First leaving water temperature sensors, first flow protector, the first inflow temperature sensor, chilled water antifreeze protector, second go out
Water temperature sensor, second flow protector, third leaving water temperature sensors, third traffic protection device, third inflow temperature pass
Sensor and water source antifreeze protector are all connect with sensor data acquisition subsystem, and sensor data acquisition subsystem is controlled with center
Device connection processed, water source water pump, heat-exchanger pump and speed governing refrigerant water pump are all connect with central controller, by central controller controls first
Refrigeration system, the second refrigeration system, third refrigeration system and the 4th refrigeration system are run as required；
First refrigeration system includes that the first compressor, the first condenser, the first qi leel, the first water source evaporator and first are cold
Water evaporimeter, first compressor one end are connect with first condenser one end, the evaporation of first the first cold water of the condenser other end
Device one end connects, and the first cold water evaporator other end is connect with first qi leel one end, the first qi leel other end and the first compressor
The other end connects, and first water source evaporator one end connect with the first condenser other end, the first water source evaporator other end and the
One qi leel one end connects；First compressor is connect with central controller.
2. water source cold-heat alliance grade hot type water chiller-heater unit according to claim 1, which is characterized in that first water source
It is provided with the first water source evaporator check valve between evaporator and the first qi leel, is set between the first cold water evaporator and the first qi leel
It is equipped with the first cold water evaporator check valve；The evaporation of the first cold water is provided between first condenser and the first cold water evaporator
Device solenoid valve is provided with the first water source evaporator solenoid valve between the first condenser and the first water source evaporator, described first is cold
Water evaporimeter solenoid valve and the first water source evaporator solenoid valve are all connect with central controller；First water source evaporator goes out
The first water source evaporator expansion valve is provided between the mouth of a river and water inlet, between the water outlet and water inlet of the first cold water evaporator
It is provided with the first cold water evaporator expansion valve.
3. a kind of control method of water source cold-heat alliance grade hot type water chiller-heater unit as described in claim 1-2 any one,
It is characterized in that, specifically including following steps：
Step A00：Operational mode is inputted by display operating panel, it is cold and hot to open water source cold-heat alliance grade hot type for setup parameter
Water dispenser group；
Step B00：Second inflow temperature sensor, the first leaving water temperature sensors, the first inflow temperature sensor, the second water outlet
Temperature sensor, third leaving water temperature sensors and third inflow temperature sensor monitor each disengaging coolant-temperature gage and feed back in real time
Sensor data acquisition subsystem, first flow protector, second flow protector and third traffic protection device, monitors whole in real time
The flow of a system simultaneously feeds back to sensor data acquisition subsystem, and chilled water antifreeze protector and water source antifreeze protector are real-time
The temperature of monitoring system simultaneously feeds back to sensor data acquisition subsystem；
Step C00：Sensor data acquisition subsystem is the data feedback being collected into central controller；
Step D00：Central controller passes through discriminatory analysis, the first refrigeration system of control, the second refrigeration system, third refrigeration system
With the startup or shutdown of the 4th refrigeration system, controls entire unit according to different operational modes and run as required, while controlling water
Source water pump, heat-exchanger pump and speed governing refrigerant water pump are run as requested.
4. the control method of water source cold-heat alliance grade hot type water chiller-heater unit according to claim 3, which is characterized in that institute
It states in step A00- steps D00, central controller controls the first refrigeration system, the second refrigeration system, third by following steps
The startup or shutdown of refrigeration system and the 4th refrigeration system：
Step a11：Operational mode is inputted by display operating panel, sets four start-up temperatures, respectively TOpen 1、TOpen 2、TOpen 3With
TOpen 4, and TOpen 1＜ TOpen 2＜ TOpen 3＜ TOpen 4, inflow temperature that the first inflow temperature sensor monitors is set as TA, setting unit heat
Water leaving water temperature setting value is TB is set, it is T that third leaving water temperature sensors, which measure practical leaving water temperature,B , set unit chilled water and go out
Coolant-temperature gage setting value is TD is set, it is T that the second leaving water temperature sensors, which measure practical leaving water temperature,D , set the antifreeze setting value of chilled water
For TRefrigerant is set, it is T that chilled water antifreeze protector, which measures practical chilled water leaving water temperature,Refrigerant, set the antifreeze setting value T in water sourceWater source is set, water
It is T that source antifreeze protector, which measures practical water source leaving water temperature,Water source, open air source cold-hot alliance grade hot type water chiller-heater unit；
Step b11：The inflow temperature real-time monitored is fed back to sensor data acquisition subsystem by the first inflow temperature sensor
System, third leaving water temperature sensors measure practical leaving water temperature and feed back to sensor data acquisition subsystem, the second leaving water temperature
The practical leaving water temperature of sensor measurement feeds back to sensor data acquisition subsystem；
Step c11：Sensor data acquisition subsystem is the data feedback being collected into central controller；
Step d11：Central controller judges TAWith TOpen 1、TOpen 2、TOpen 3And TOpen 4Between size, if TA＜ TOpen 1, step d12 is executed,
If TOpen 1＜ TA＜ TOpen 2, step d13 is executed, if TOpen 2＜ TA＜ TOpen 3, step d14 is executed, if TOpen 3＜ TA＜ TOpen 4, execute step
D15, if TA＞ TOpen 4, execute step d16；
Step d12：The first refrigeration system of central controller controls, the second refrigeration system, third refrigeration system and the 4th refrigeration system
System is actuated for heating operation；
Step d13：The second refrigeration system of central controller controls and third refrigeration system are actuated for heating operation, the first refrigeration
System and the 4th refrigeration system are shut down；
Step d14：Central controller controls third refrigeration system and the 4th refrigeration system are actuated for heating operation, the first refrigeration
System and the second refrigeration system are shut down；
Step d15：The 4th refrigeration system of central controller controls is actuated for heating operation, the first refrigeration system, the second refrigeration
System and third refrigeration system are shut down；
Step d16：The first refrigeration system of central controller controls, the second refrigeration system, third refrigeration system and the 4th refrigeration system
System is shut down.
5. the control method of water source cold-heat alliance grade hot type water chiller-heater unit according to claim 4, which is characterized in that when
When the operational mode of step a11 inputs is cold and heat combined supply operational mode, include the following steps：
Step e11：The water source evaporator solenoid valve for the refrigeration system that central controller controls have been started up is closed, refrigerant water evaporation
Device solenoid valve is opened, and is controlled the refrigeration system not started and is remained shut off.
6. the control method of water source cold-heat alliance grade hot type water chiller-heater unit according to claim 4, which is characterized in that when
When the operational mode of step a11 input is water source list hot operational mode, include the following steps：
Step e21：The water source evaporator solenoid valve for the refrigeration system that central controller controls have been started up is opened, refrigerant water evaporation
Device solenoid valve is closed, and is controlled the refrigeration system not started and is remained shut off.
7. the control method of water source cold-heat alliance grade hot type water chiller-heater unit according to claim 5 or 6, feature exist
In under cold and heat combined supply operational mode or the hot operational mode of water source list, central controller ensures hot water effluent by following steps
Temperature reaches setting value：
Step f11：Central controller judges TBWith TB is setSize, if TB ＜ TB is set, step f12 is executed, if TB ＞ TB is set, execute step
Rapid f13；
Step f12：The compressor for the refrigeration system that central controller controls have been started up carries out load operating, and control does not start
Refrigeration system remain shut off, ensure hot water effluent's temperature reach setting value；
Step f13：The compressor for the refrigeration system that central controller controls have been started up carries out unloading operation, and control does not start
Refrigeration system remain shut off, ensure hot water effluent's temperature reach setting value.
8. the control method of water source cold-heat alliance grade hot type water chiller-heater unit according to claim 5, which is characterized in that
Under cold and heat combined supply operational mode, central controller ensures that hot water effluent's temperature reaches setting value by following steps：
Step f21：Central controller judges TDWith TD is setSize, if TD＜ TD is set, step f22 is executed, if TD＞ TD is set, execute step
Rapid f23；
Step f22：Central controller controls speed governing refrigerant water pump (616) increases water pump water outlet flow, ensures chilled water water outlet
Temperature reaches setting value；
Step f23：Central controller controls speed governing refrigerant water pump (616) reduces water pump water outlet flow, ensures chilled water water outlet
Temperature reaches setting value.
9. the control method of water source cold-heat alliance grade hot type water chiller-heater unit according to claim 4, which is characterized in that in
Centre controller ensures the antifreeze operation of entire water source cold-heat alliance grade hot type water chiller-heater unit by following steps：
Step g11：Central controller judges T respectivelyRefrigerant is setWith TRefrigerant、TWater source is setWith TWater sourceSize, if TRefrigerant is set<TRefrigerantOr TWater source is set<TWater source,
Step g12 is executed, if TRefrigerant is set>TRefrigerantOr TWater source is set>TWater source, execute step g13；
Step g12：The entire water source cold-heat alliance grade hot type water chiller-heater unit of central controller controls shuts down operation；
Step g13：The entire water source cold-heat alliance grade hot type water chiller-heater unit of central controller controls starts operation.
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| CN106352604A (en) * | 2016-10-25 | 2017-01-25 | 佛山市澳霆环境设备制造有限公司 | Water cooling control system with multiple compressors and operating method |
| CN106500404B (en) * | 2016-12-27 | 2022-04-12 | 江苏天舒电器股份有限公司 | Double-variable-capacity heat pump cold and heat combined supply system and control method thereof |
| CN111839220A (en) * | 2020-08-04 | 2020-10-30 | 湖北蓝浩节能科技有限公司 | Constant-temperature and quantitative instant heating type water dispenser |
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