CN109253515A - A kind of freezing water thermostat and its control method - Google Patents
A kind of freezing water thermostat and its control method Download PDFInfo
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- CN109253515A CN109253515A CN201811134138.5A CN201811134138A CN109253515A CN 109253515 A CN109253515 A CN 109253515A CN 201811134138 A CN201811134138 A CN 201811134138A CN 109253515 A CN109253515 A CN 109253515A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 264
- 238000007710 freezing Methods 0.000 title claims abstract description 74
- 230000008014 freezing Effects 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 52
- 239000007788 liquid Substances 0.000 claims abstract description 122
- 239000002826 coolant Substances 0.000 claims abstract description 114
- 238000001816 cooling Methods 0.000 claims abstract description 108
- 239000012141 concentrate Substances 0.000 claims abstract description 27
- 230000001105 regulatory effect Effects 0.000 claims description 111
- 238000012545 processing Methods 0.000 claims description 48
- 238000012546 transfer Methods 0.000 claims description 36
- 230000008676 import Effects 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 230000008901 benefit Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 28
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052710 silicon Inorganic materials 0.000 abstract description 6
- 239000010703 silicon Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 12
- 238000009833 condensation Methods 0.000 description 7
- 230000005494 condensation Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 6
- 230000001050 lubricating effect Effects 0.000 description 5
- 238000007514 turning Methods 0.000 description 5
- 239000002918 waste heat Substances 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000013011 mating Effects 0.000 description 4
- 238000012795 verification Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- PZZOEXPDTYIBPI-UHFFFAOYSA-N 2-[[2-(4-hydroxyphenyl)ethylamino]methyl]-3,4-dihydro-2H-naphthalen-1-one Chemical compound C1=CC(O)=CC=C1CCNCC1C(=O)C2=CC=CC=C2CC1 PZZOEXPDTYIBPI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012885 constant function Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of freezing water thermostat and its control method, which includes: that four-pipe system concentrates cold source (1) and thermostat module (3)；The thermostat module (3), comprising: First Heat Exchanger (51) and the second heat exchanger (52)；Wherein, the coolant line of first coolant liquid heat exchanger tube of the First Heat Exchanger (51), the second coolant liquid heat exchanger tube of second heat exchanger (52) and heat resource equipment (2), series connection forms the coolant liquid heat-radiation loop of the heat resource equipment (2), cold source for concentrating cold source (1) to provide using the four-pipe system, classification cooling is carried out to the coolant liquid of the heat resource equipment (2), so that the Current Temperatures of the coolant liquid of the heat resource equipment (2) reach set temperature.The solution of the present invention can solve and there is a problem of control process complexity by the silicon-controlled control mode for implementing accurate heating efficiency output to auxiliary electrical heater, achievees the effect that simplified control process.
Description
Technical field
The invention belongs to the technical fields that cools, and in particular to a kind of freezing water thermostat and its control method, especially
It is related to the thermostat and its control method of a kind of dual temperature chilled water vari- able flow control.
Background technique
In some special applications, for example the main shaft constant temperature of precision machine tool is cooling and when body is kept the temperature, it is desirable that temperature control
Precision is relatively high, and its purpose is to guarantee that electric machine main shaft will not cause to extend or shorten, electric machine main shaft because of expanding with heat and contract with cold
Dilatation at work will cause mismachining tolerance and deviate setting value, and the purpose of body heat preservation is also this reason.
Current machine-building becomes increasingly complex, powerful accuracy is high, each lathe producer machine tool applications produced
Different cooling and lubricating substances or even the different lathes of same producer production are also possible to using different cooling and lubricating objects
Matter.These different lathe set are applied in manufacturing enterprise, and each lathe needs mating independent oil cooling machine or cooling-water machine,
Its reliability requirement is very high.When matched cooling device fails, the matched lathe of institute will be unable to work normally even
It stops production, until the fault recovery of cooling equipment.During Wait-to-Restore, be not available other cooling equipment usually makes to replace
With the mainly different cooling and lubricating material demand of the mating difference of function and cleaning spends many time.
One numerous different types of machining tool of big workshop set, the matched air-cooled cooling equipment of every lathe
Condensation waste heat will be discharged into workshop, the air conditioner load in workshop will be greatly increased in summer, enterprise is caused to produce
The waste of cost.If these condensation waste heats are discharged into outdoor by pipeline etc., need to heat when being transformed into winter workshop
When require these condensation waste heats to retain again indoors, to reduce the heat load in workshop, save production cost.
For individual cooling equipment, in the water cooler or oil cooling machine group of some accurate demand for control temperature,
Part high-temperature high-pressure refrigerant is directly passed through after throttling the i.e. input end of evaporator by hot-gas bypass, with the low temperature after original throttling
The mixing of low pressure refrigerant liquid further influences going out for cooled liquid to improve the pressure and temperature of evaporator inlet
Mouth temperature.This way usually will cause the fluctuation of refrigeration system, stablize overlong time, the outlet temperature for the liquid that is correspondingly cooled
Degree (namely control target) also will appear influence of fluctuations, or even sometimes might as well original control stability.
In order to solve this interactional fluctuation, some accurate units are using auxiliary electrical heater technology cooled liquid
Temperature promoted to target temperature range, accurate heating efficiency is implemented to auxiliary electrical heater by silicon-controlled equal design and is exported,
This method can fast implement target temperature and not interfere with the stability of refrigeration system.But the disadvantage is that needing to expend volume
Outer electric energy, electrically heated safety are poor, silicon-controlled more complicated to the hardware design and software control of controller.
Summary of the invention
It is an object of the present invention in view of the foregoing drawbacks, a kind of freezing water thermostat and its control method are provided, with solution
Certainly exist in the prior art by the silicon-controlled control mode for implementing accurate heating efficiency output to auxiliary electrical heater and controlled
The problem of journey complexity, achievees the effect that simplified control process.
The present invention provides a kind of freezing water thermostat, comprising: four-pipe system concentrates cold source and thermostat module；The constant temperature mould
Block, comprising: First Heat Exchanger and the second heat exchanger；Wherein, the first coolant liquid heat exchanger tube of the First Heat Exchanger, described second
Second coolant liquid heat exchanger tube of heat exchanger and the coolant line of heat resource equipment, series connection form the cooling of the heat resource equipment
Liquid heat-radiation loop, the cold source for concentrating cold source to provide using the four-pipe system, divides the coolant liquid of the heat resource equipment
Grade cooling, so that the Current Temperatures of the coolant liquid of the heat resource equipment reach set temperature.
Optionally, wherein the four-pipe system is concentrated in cold source for conveying the first freezing of the first set temperature chilled water
Water transfer pipeline is back in the four-pipe system concentration cold source and uses after the first freezing water heat exchanger tube in the First Heat Exchanger
In the first chilled water return line of the first heat-exchanging water received from the first freezing water heat exchanger tube discharge, to realize to institute
The coolant liquid for stating heat resource equipment carries out the first cooling processing of the first setting amplitude；The four-pipe system is concentrated in cold source for conveying
Second chilled water transfer pipeline of the second set temperature chilled water, after the second freezing water heat exchanger tube in second heat exchanger,
Be back to the four-pipe system concentrate in cold source for the second heat-exchanging water received from the second freezing water heat exchanger tube discharge the
In two chilled water return lines, to realize that the coolant liquid to the heat resource equipment is handling a laggard stepping through first cooling
Row second sets the second cooling processing of amplitude.
Optionally, the thermostat module, further includes: the first regulating valve and the second regulating valve；Wherein, it described first adjusts
Valve is arranged in the pipeline between the first chilled water transfer pipeline and the first freezing water heat exchanger tube, sets for basis
First cooling processing is adjusted in the first fixed temperature control mode；Second regulating valve, setting is in second freezing
In pipeline between water transfer pipeline and the second freezing water heat exchanger tube, for the second temperature control mode according to setting, to institute
The second cooling processing is stated to be adjusted.
Optionally, the thermostat module, further includes: the first by-passing valve and the second by-passing valve；Wherein, first bypass
Valve is arranged in the pipeline between first regulating valve and the first chilled water return line, for adjusting described first
After section valve turns down the chilled-water flow of the first chilled water heat exchanging pipe, make the extra freezing conveyed from the first chilled water transfer pipeline
Water is passed through by first by-passing valve；Second by-passing valve is arranged in second regulating valve and second chilled water
In pipeline between return line, for turning down the chilled-water flow of the second chilled water heat exchanging pipe in second regulating valve
Afterwards, pass through the extra chilled water conveyed from the second chilled water transfer pipeline by second by-passing valve.
Optionally, the thermostat module, further includes: controller, temperature sensor and pump；Wherein, the temperature sensor,
Be arranged in the First Heat Exchanger, the import of second heat exchanger, centre, at least one position in outlet, for adopting
Collect the Current Temperatures at the position；The pump is arranged in the coolant liquid heat-radiation loop, for controlling the heat resource equipment
Coolant liquid present flow rate；The controller concentrates cold source communication connection with the four-pipe system, for according to the current temperature
Degree and set temperature, control the four-pipe system concentrate cold source, first regulating valve, second regulating valve, by described first
At least one of port valve, second by-passing valve, described pump, realize the Current Temperatures to the coolant liquid of the heat resource equipment
And/or the control of present flow rate.
Optionally, wherein the quantity of the thermostat module is more than one；When the thermostat module quantity be two with
When upper, more than two thermostat modules are arranged in parallel, and are carried out for the coolant liquid respectively to more than two heat resource equipments
Cooling constant temperature processing；And/or in a thermostat module, the quantity of the First Heat Exchanger is more than one and/or institute
The quantity for stating the second heat exchanger is more than one.
Match with above-mentioned freezing water thermostat, further aspect of the present invention provides a kind of control for freezing water thermostat
Method, comprising: using four-pipe system concentrate cold source provide cold source, to the coolant liquid of heat resource equipment successively pass through First Heat Exchanger and
Second heat exchanger carries out classification cooling, so that the Current Temperatures of the coolant liquid of the heat resource equipment reach set temperature.
Optionally, First Heat Exchanger is successively passed through to the coolant liquid of heat resource equipment and the second heat exchanger carries out classification cooling,
It include: to be concentrated by four-pipe system for conveying the first chilled water transfer pipeline of the first set temperature chilled water in cold source, through institute
After stating in First Heat Exchanger the first freezing water heat exchanger tube, it is back to the four-pipe system and concentrates in cold source for received from described first
In the first chilled water return line for freezing the first heat-exchanging water of water heat exchanger tube discharge, the coolant liquid to the heat resource equipment is realized
Carry out the first cooling processing of the first setting amplitude；And it is concentrated in cold source by four-pipe system for conveying the second set temperature
Second chilled water transfer pipeline of chilled water is back to described four after the second freezing water heat exchanger tube in second heat exchanger
The second chilled water reflux in cold source for the second heat-exchanging water received from the second freezing water heat exchanger tube discharge is concentrated in control
In pipeline, realize the coolant liquid to the heat resource equipment in the setting of further progress second amplitude after first cooling processing
The second cooling processing.
Optionally, the first cooling for carrying out the first setting amplitude to the coolant liquid of the heat resource equipment is handled, comprising: at this
In the case that freezing water thermostat further includes the first regulating valve, first regulating valve is controlled according to set temperature, until into
The the first set temperature chilled water for entering the First Heat Exchanger will be cooling between the First Heat Exchanger and second heat exchanger
After the medium temperature freezing of liquid is reduced to the first set temperature range, keep the aperture of first regulating valve constant.
Optionally, to the coolant liquid of the heat resource equipment in the setting of further progress second after first cooling processing
Second cooling of amplitude is handled, comprising: in the case where the freezing water thermostat further includes the second regulating valve, if described first
Regulating valve do not adjust and the medium temperature be greater than the second set temperature range the upper limit in the case where, according to the medium temperature
Second regulating valve is controlled with the difference of the set temperature, until the outlet temperature of second heat exchanger is reduced to the
After two set temperature ranges, keep the aperture of second regulating valve constant.
Optionally, to the coolant liquid of the heat resource equipment in the setting of further progress second after first cooling processing
Second cooling of amplitude is handled, further includes: if the outlet temperature is less than the set temperature, reduces second regulating valve
Aperture；If the outlet temperature is still less than the setting after the aperture of second regulating valve reaches the minimum aperture of setting
Temperature then reduces the aperture of first regulating valve, until the outlet temperature is greater than or equal to the second set temperature model
The lower limit enclosed.
Optionally, further includes: if a chilled water in the first chilled water transfer pipeline, the second chilled water transfer pipeline is defeated
Pipeline is sent to break down, then using the outlet temperature of the coolant liquid of the heat exchanger where another chilled water transfer pipeline as control
Make the control amount of the cooling constant temperature processing.
The solution of the present invention, by four-pipe system cooling supply thermostat module use double heat exchanger connect, different temperatures it is cold
Freeze water and supply different heat exchangers respectively, realizes the high-precision control of final outlet temperature, simplify control process, improve control
Efficiency and effect processed.
Further, the solution of the present invention finely tunes temperature, realizes the small temperature difference (medium temperature by graded temperature-control after first coarse adjustment temperature
And the difference of outlet temperature) big flow control it is more stable, improve control precision.
The solution of the present invention as a result, can be full by using heat exchangers in series, realization coarse adjustment and fine tuning in thermostat module
Sufficient constant-temperature high-precision control solves to implement auxiliary electrical heater accurate heating efficiency output by silicon-controlled in the prior art
There are control process complexity, (i.e. some accurate units propose the temperature of cooled liquid using auxiliary electrical heater technology control mode
It is raised to target temperature range and is deposited by way of implementing accurate heating efficiency output to auxiliary electrical heater the design such as silicon-controlled
In control process complexity) the problem of, thus, overcome control process complexity, the defect of energy consumption height and safety difference in the prior art,
Realize the beneficial effect that control process is simple, low energy consumption and safety is good.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of an embodiment of freezing water thermostat of the invention；
Fig. 2 be freezing water thermostat of the invention control method in first is successively passed through to the coolant liquid of heat resource equipment
Heat exchanger and the second heat exchanger carry out the flow diagram of an embodiment of classification cooling；
Fig. 3 is to combine the first regulating valve in the second cooling processing in the control method for freezing water thermostat of the invention
The flow diagram for the embodiment being finely adjusted with the second regulating valve.
In conjunction with attached drawing, appended drawing reference is as follows in the embodiment of the present invention:
1- four-pipe system concentrates cold source；2- heat resource equipment；3- thermostat module；4- controller；51- First Heat Exchanger；52- second
Heat exchanger；The first regulating valve of 61-；The second regulating valve of 62-；The first by-passing valve of 71-；The second by-passing valve of 72-；8- pump；91- import temperature
Spend sensor；92- medium temperature sensor；93- outlet temperature sensor.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
It there is no that monoblock type supplies the solution of more lathes at present.Referring to water cooler: a water cooler
Multiple users, user's booting or stopping are supplied, the water flow of other users is influenced, other users need to adjust control
It realizes again stable；This, which adjusts to control to be placed on oil cooling machine, will result in serious temperature fluctuation, be for precision machine tool
Do not allow.In addition, according to SCR control, since SCR control is usually special circuit design, so hardware is set
Special software is also needed to carry out control output size after meter；But if being control solenoid valve, there is no need to special hardware to set
Meter and software control.
According to an embodiment of the invention, providing a kind of freezing water thermostat.The device of the invention shown in Figure 1
The structural schematic diagram of one embodiment.The freezing water thermostat may include: that four-pipe system concentrates cold source 1 and thermostat module 3.It is described
Thermostat module 3 may include: First Heat Exchanger 51 and the second heat exchanger 52.
Wherein, the second coolant liquid of the first coolant liquid heat exchanger tube of the First Heat Exchanger 51, second heat exchanger 52
The coolant line of the heat resource equipment 2 of heat exchanger tube and pending cooling constant temperature, series connection form the cooling of the heat resource equipment 2
Liquid heat-radiation loop, the cold source that can be used for concentrating cold source 1 to provide using the four-pipe system, to the coolant liquid of the heat resource equipment 2
Classification cooling successively is carried out by the First Heat Exchanger 51 and second heat exchanger 52, so that the heat resource equipment 2 is cold
But the Current Temperatures of liquid reach set temperature (outlet temperature of the coolant liquid of heat resource equipment 2 as described in making reach setting outlet temperature
Degree or inlet temperature reach setting inlet temperature).
Such as: thermostat module and concentrate cold source system between communicating data, select optimal control measure in time, avoid because
The return water temperature hysteresis quality of water return pipeline causes response speed excessively slow, causes period of waves too long；By-passing valve in module can be with
Guarantee that the water flow approximation in module is stablized, the hydraulic stability to other parallel modules is avoided to generate excessive influence.To,
It can reduce or even avoid fluctuation when refrigeration system thermostatic control to influence, solve the problems, such as temperature-controlled precision and fast and stable, keep away
Exempt from the auxiliary electrical heater equipment using energy consumption and safety difference.
Such as: four-pipe system concentrates the discharge that the condensation waste heat of lathe can be concentrated of cold source system or in workshop
Air-flow is reorganized, the comfort in workshop is improved.It is thus possible to solve making full use of for condensation waste heat and asking for discharging in time
Topic improves energy utilization rate.Wherein, two sets of water systems are independent.
Such as: high/low temperature chilled water system in thermostat module is independent, is independent of each other, can refrigeration duty to lathe into
Row quickly responds, and two systems are mutually spare.It is thus possible to avoid the occurrence of the reliability of independent cooling equipment and general
The problem of property.Such as: after the mating oil cooling machine failure of a machine tool, the matched oil of other different lathes basically can not be used cold
Machine, that is, have no idea to meet an urgent need by the method temporarily borrowed, oil cooling machine to be repaired or that purchase is new can only be waited.
As a result, by the way that concatenated two heat exchangers are arranged in thermostat module, it can use four-pipe system and cold source concentrated to provide
Cold source cooled down step by step to the coolant liquid of heat resource equipment so that the Current Temperatures of the coolant liquid of heat resource equipment reach setting temperature
Degree, control process is simple, and the high reliablity that cools, safety are good.
Specifically, the quantity of the thermostat module 3 is more than one.When the quantity of the thermostat module 3 is two or more
When, more than two thermostat modules 3 are arranged in parallel, and can be used for respectively to the coolant liquid of more than two heat resource equipments 2
Carry out cooling constant temperature processing.
Such as: multiple thermostat modules are in parallel, can cool down different lathes respectively, and modularization, generalization degree are high.From
And the problem of can solve the generalization under different cooling requirements, modular high accuracy temperature control module.Thermostat module is in parallel,
It is connected in parallel in identical four-pipe system and concentrates cold source, each thermostat module (thermostat module shown in dotted line frame as shown in figure 1) supply
One with cold end (such as lathe).
Wherein, the lubricating cooling oil that every kind of lathe specification is different, manufacturer is different, uses is different, heat dissipation capacity is different, connection
Dynamic control etc. all may be different；So matched oil cooling machine just needs to carry out Aided design with lathe, be difficult to accomplish generalization,
Modularization.
As a result, by the way that more than one thermostat module is arranged, can simultaneously to the coolant liquid of more than one heat resource equipment into
The cooling constant temperature processing of row, treatment effeciency is high, and treatment process is simple, processing high reliablity.
Specifically, in a thermostat module 3, the quantity of the First Heat Exchanger 51 is more than one and/or described
The quantity of second heat exchanger 52 is more than one.
As a result, by the way that more than one First Heat Exchanger, and/or more than one second are arranged in a thermostat module
Heat exchanger can carry out the coarse adjustment and/or fine tuning of more stages to the coolant liquid of heat resource equipment, and then meet more temperature adjustment demands,
Temperature adjustment efficiency and temperature adjustment precision can also be promoted.
Optionally, to the coolant liquid of the heat resource equipment 2 successively by the First Heat Exchanger 51 and second heat exchange
Device 52 carries out classification cooling, comprising: coarse tuning process and fine-tuning process (or accurate adjustment process).
Such as: using heat exchangers in series (two heats exchangers in series inside such as thermostat module) in thermostat module, realize
Coarse adjustment and fine tuning are able to satisfy constant-temperature high-precision control.
Coarse tuning process: can be used for conveying the first set temperature chilled water in the four-pipe system concentration cold source 1 first is cold
Freeze water transfer pipeline, through the first freezing water heat exchanger tube in parallel with the first coolant liquid heat exchanger tube in the First Heat Exchanger 51
Afterwards, being back to the four-pipe system concentrates can be used for being discharged in cold source 1 received from the first freezing water heat exchanger tube first to change
In first chilled water return line of hot water, the of the first setting amplitude is carried out to the coolant liquid of the heat resource equipment 2 to realize
One cooling processing.Wherein, the first chilled water return line can be used for received from the first freezing water heat exchanger tube discharge
With the first heat-exchanging water after the first coolant liquid heat exchanger tube heat exchange of the First Heat Exchanger 51.
Accurate adjustment process: can be used for conveying the second set temperature chilled water in the four-pipe system concentration cold source 1 second is cold
Freeze water transfer pipeline, after the second freezing water heat exchanger tube in second heat exchanger 52, it is cold to be back to the four-pipe system concentration
It can be used for the second chilled water return line of the second heat-exchanging water received from the second freezing water heat exchanger tube discharge in source 1
In, to realize the coolant liquid to the heat resource equipment 2 in the setting of further progress second amplitude after first cooling processing
The second cooling processing.Wherein, the second chilled water return line can be used for received from the second freezing water heat exchanger tube 52
The second heat-exchanging water after the second coolant liquid heat exchanger tube heat exchange with second heat exchanger of discharge.Such as: the second coolant liquid is changed
Heat pipe can be arranged in parallel between the second freezing water heat exchanger tube, can also be socketed setting, be also possible to be able to achieve second
The other set-up modes to exchange heat between coolant liquid heat exchanger tube and the second freezing water heat exchanger tube.
Such as: four-pipe system cooling supply thermostat module is connected using double heat exchanger, and the chilled water of different temperatures supplies difference respectively
Heat exchanger；First heat exchanger supply low temperature chilled water, fast cooling make medium temperature level off to target temperature, and second
Heat exchanger supply high temperature chilled water, fine tuning chilled-water flow is to realize the high-precision control of final outlet temperature.Here, four pipe
Cooling supply processed refers to that thermostat module has 2 sets of cooling water supply systems, 4 connecting tubes.
Such as: graded temperature-control finely tunes temperature after first coarse adjustment temperature.According to (the i.e. import of thermostat module of heat resource equipment outlet temperature
Temperature) rate of change, the flux change velocity for adjusting first cryogenic freezing water- to-water heat exchanger is adapted therewith, in combination in
Between temperature and target temperature difference, the flow of the low temperature chilled water of first heat exchanger of comprehensively control；Because of medium temperature control
Make more stable and close to target temperature, therefore medium temperature and outlet temperature are relatively, therefore second heat exchanger changes
Heat is fewer, realizes that the control of the small temperature difference (difference of medium temperature and outlet temperature) big flow is more stable, finely tunes water flow.
Such as: according to the set temperature (i.e. the target value of outlet temperature) of user, determine the supply temperature of high temperature chilled water
And it is close, realize that the small temperature difference (temperature difference between the different fluid of heat exchanger two sides) big flow exchanges heat, therefore high temperature freezes
The flow control valve adjustable extent of water is bigger, is suitble to the adjusting of accurate temperature controlling.
As a result, by concentrating the first set temperature chilled water of cold source offer through First Heat Exchanger to heat source using four-pipe system
The coarse adjustment control that the temperature of the coolant liquid of equipment cools down, and the second setting temperature for concentrating cold source to provide using four-pipe system
The fine tuning control that degree chilled water is cooled down through temperature of second heat exchanger to the coolant liquid of heat resource equipment, and then pass through elder generation
The control that cools of coarse adjustment fine tuning again makes the temperature of coolant liquid precisely reach set temperature, and control precision is high.
In an optional example, the thermostat module 3 can also include: the first regulating valve 61 and the second regulating valve 62.
Specifically, first regulating valve 61 is arranged in the first chilled water transfer pipeline and first chilled water
It in pipeline between heat exchanger tube, can be used for the first temperature control mode according to setting, first cooling processing be adjusted.
Specifically, second regulating valve 62 is arranged in the second chilled water transfer pipeline and second chilled water
It in pipeline between heat exchanger tube, can be used for the second temperature control mode according to setting, second cooling processing be adjusted.
It is adjusted as a result, by the first regulating valve and second that are adapted to setting with First Heat Exchanger and the second heat exchanger respectively
Valve can control the flow of chilled water in coarse adjustment and fine-tuning process, to realize to coarse adjustment degree and fine tuning degree
Control further promotes the controllability and control precision of cooling constant temperature processing.
In a further optional example, the thermostat module 3 can also include: by the first by-passing valve 71 and second
Port valve 72.
Specifically, first by-passing valve 71, setting is in first regulating valve 61 and the first chilled water return pipe
In pipeline between road, it can be used for turning down the chilled-water flow of the first chilled water heat exchanging pipe in first regulating valve 61
Afterwards, pass through the extra chilled water conveyed from the first chilled water transfer pipeline by first by-passing valve 71.
Specifically, second by-passing valve 72, setting is in second regulating valve 62 and the second chilled water return pipe
In pipeline between road, it can be used for turning down the chilled-water flow of the second chilled water heat exchanging pipe in second regulating valve 62
Afterwards, pass through the extra chilled water conveyed from the second chilled water transfer pipeline by second by-passing valve 72.
Such as: by using self-operated type differential-pressure bypass valve and regulating valve, each user may be implemented and connect supply main pipe
On stability of flow, either user shutdown or booting, flow and the temperature fluctuation of other lathes can be avoided.Its
In, when adjusting valve regulation, the flow to user's supply is to change, but undulate quantity is made up by self-operated type differential-pressure bypass valve,
Guarantee that the water flow supplied for return water main pipe this module is constant.
It is bypassed as a result, by the first by-passing valve and second that are adapted to setting with the first regulating valve and the second regulating valve respectively
Valve can be such that extra chilled water passes through when corresponding regulating valve turns down, and not influence chilled water after corresponding regulating valve tunes up
Normal circulation further improves the accuracy and reliability of cooling constant temperature processing.
In a further optional example, the thermostat module 3, can also include: controller 4, temperature sensor (such as
Inlet temperature sensor 91, medium temperature sensor 92 and outlet temperature sensor 93 etc.) and pump 8.
Specifically, the temperature sensor, be arranged in the First Heat Exchanger 51, second heat exchanger 52 import,
At at least one position intermediate, in outlet, it can be used for acquiring the Current Temperatures at the position.Such as: utilize import temperature
Sensor 91 is spent, the inlet temperature of coolant liquid is acquired；Using medium temperature sensor 92, the medium temperature of coolant liquid is acquired；Benefit
With outlet temperature sensor 93, the outlet temperature of coolant liquid is acquired.
The Current Temperatures at coolant liquid different location are acquired by multiple sensors as a result, and then are facilitated current according to this
Temperature carries out cooling constant temperature processing, and the accuracy obtained to Current Temperatures is good, high reliablity.
Specifically, the pump 8, is arranged in the coolant liquid heat-radiation loop, can be used for controlling the heat resource equipment 2
The present flow rate of coolant liquid.
As a result, by pump, the flow of the coolant liquid of heat resource equipment can be flexibly controlled, the flexibility of control is good, reliability
It is high.
Specifically, the controller 4, concentrating 1 communication connection of cold source with the four-pipe system, (such as wired communication connection is wireless
Communication connection), it can be used for controlling the four-pipe system according to the Current Temperatures and set temperature and concentrating cold source 1, described first
Regulating valve 61, second regulating valve 62, first by-passing valve 71, second by-passing valve 72, it is described pump 8 at least it
One, realize the control of the Current Temperatures and/or present flow rate to the coolant liquid of the heat resource equipment 2.
Cold source, the first regulating valve, the second regulating valve, the first by-passing valve, second are concentrated to four-pipe system by controller as a result,
The control of by-passing valve and pump may be implemented the automatic control of the cooling constant temperature processing to the coolant liquid of heat resource equipment, greatly promote
The convenience and efficiency of control, and high reliablity, safety are good.
In an optional specific embodiment, can example as shown in connection with fig. 1, to the specific reality of the solution of the present invention
Existing process illustrates.
As shown in Figure 1, being directed to existing water cooler, the improvement in structure is the thermostat module inside dotted line frame.
Specifically, common water cooler directly supplies cold water to fan coil, and majority uses 2 control, and fan coil is voluntarily
Control temperature needs additionally to be designed in engineering if necessary to constant flow rate or constant pressure difference.And constant temperature of the invention
Module carries out cooling temperature control dedicated for a variety of different precision machine tools, generalization may be implemented without influencing other constant temperature moulds
The stable operation of block.
In addition, another effect of the thermostat module is: the lathe of different size can be connected by thermostat module
Setting, cleaning thermostat module to the same cold supply system (four-pipe system as shown in figure 1 concentrates cold source), by adjusting thermostat module
Interior lubricating cooling oil can be transferred to thermostat module currently in use other a machine tool and use, greatly improve perseverance
The generalization of warm module, modularization are horizontal.
Wherein, as shown in Figure 1, the first regulating valve 61 or the second regulating valve 62, it is used for regulating water flow, corresponding first
After changes in flow rate in heat exchanger 51 or the second heat exchanger 52, because the inlet temperature of water is constant, First Heat Exchanger 51
Or the second heat exchange amount in heat exchanger 52 changes, and so as to adapt to the load variations of heat resource equipment, realizes constant temperature control
System.
After regulating valve turns down flow, extra flow passes through self-operated type pressure difference the first by-passing valve 71 or the first by-passing valve 72
Pass through, guarantees that vibration means for main pipe for supplying water is supplied to the water flow of thermostat module constant；After regulating valve opens big increase flow, by-passing valve subtracts automatically
Small flow.Wherein, self-operated type differential-pressure bypass valve is unable to control, and regulating valve needs controller to carry out aperture control.
In an optional specific example, as shown in Figure 1, the solution of the present invention, is related to a kind of dual temperature chilled water variable-flow
The thermostat of control mainly may include: that four-pipe system can provide the water cooler of high temperature chilled water and low temperature chilled water, constant temperature
Module and water system connecting line and communication line.The system main purpose is to realize that the combination of several thermostat modules is answered
Different thermostatic controls may be implemented with, each thermostat module and do not interfere with each other, adapt to the coolant liquid of various different heat sources equipment
Cooling application.
Optionally, four-pipe system concentrates cold source to have high temperature chilled water and low temperature chilled water output function, non-interference independence
Operation.Supply water temperature variation can be carried out according to itself control target, for example high temperature chilled water leaving water temperature is arranged in cold source unit
Constant, low temperature chilled water effluent temperature constancy, or judgement is carried out using suitable freezing according to the set temperature of thermostat module
Water supply temperature.Four-pipe system, which is concentrated, uses wired or wireless telecommunications connection type between cold source unit and thermostat module, realize
Operation and control parameter it is shared, adjust itself operating status in time.
Optionally, in thermostat module, concatenated two First Heat Exchangers 51 and the second heat exchanger 52, external heat source are provided with
The coolant liquid of equipment successively passes through First Heat Exchanger 51 and the second heat exchanger 52 realizes classification cooling, eventually arrives at the outlet of setting
(certainly, constant also possible by control inlet temperature in turn, the target value of set temperature is as import temperature at this time for temperature
Spend the target of control).
Optionally, in thermostat module, low temperature chilled water enters First Heat Exchanger 51 and is significantly cooled down to coolant liquid, makes
Medium temperature is obtained to level off to but not less than the target temperature of setting；High temperature chilled water enters the second heat exchanger 52 and is dropped by a small margin
Temperature control system, so that outlet temperature output is within the scope of the high-precision of set target value.It is changed since the temperature difference of the second heat exchanger 52 is small
Heat is small, in order to avoid fluctuation of the water flow adjustment to control temperature is excessive, the temperature of high temperature chilled water should be made to tend to as far as possible
The temperature of coolant liquid in second heat exchanger 52 realizes the small temperature difference heat exchange of two side liquids of the second heat exchanger 52, at this time high temperature
Influence of the changes in flow rate of chilled water to temperature-controlled precision can substantially reduce, have the flow adjusting of high temperature chilled water
Broader adjustable range.
Optionally, in thermostat module, after low temperature chilled water a part enters First Heat Exchanger 51 by the first regulating valve 61
It is mixed out with another part by the chilled water of the first by-passing valve 71 and returns to four-pipe system concentration cold source unit；It is similar, it is high
Warm chilled water system and cryogenic freezing water system have identical design.First regulating valve 61 or the second regulating valve 62 can bases
The temperature control of the coolant liquid of heat exchanger where respectively requires to be adjusted, and controls the chilled-water flow for entering heat exchanger, right
Answer by-passing valve have pressure difference constant function, guarantee chilled water enter thermostat module changes in flow rate it is basicly stable.It can protect in this way
Demonstrate,prove the chilled-water flow between the thermostat module of multiple parallel connections do not interfere with each other, four-pipe system concentrate cold source total supply keep constant current
Amount operation.
Optionally, in thermostat module, inlet temperature, medium temperature and outlet temperature sensor 3, Yi Jishui have been also equipped with
Pump, controller etc..
According to outlet temperature ToWith setting target temperature TsDifference, control the second regulating valve 62 make high temperature chilled water
Flow adjusts in time, and target is so that ToIn setting target temperature TsTemperature-controlled precision within.Due to temperature difference very little, thus
High temperature chilled-water flow in two heat exchangers 52 will not be too small, and the adjusting of the second regulating valve 62 not will cause outlet temperature To's
It fluctuates widely.
In order to realize, the heat exchange of the small temperature difference of high temperature chilled water and coolant liquid is (bigger so as to use in the second heat exchanger 52
The high temperature chilled water of flow is adjusted), according to setting target temperature TsDetermine that four-pipe system concentrates the high temperature chilled water of cold source to go out
Mouth temperature Tg, such as Tg=Ts- 2 or Tg=Ts- 3, the temperature gap of the two is preset according to the needs of thermostat module, multiple
When thermostat module is used in parallel, meet minimum setting target temperature TsCondition.
The control key step of water system (referring mainly to thermostat module) can be such that
1) according to the target temperature T of settings, control the first regulating valve 61 and make the cryogenic freezing for entering First Heat Exchanger 51
Medium temperature can be dropped to T as early as possible by water flows-△t≤Tm≤Ts+ △ t+1 (t≤1 0≤△ and △ t is adjustable), is then protected
The aperture for holding the first regulating valve 61 is constant.
2) it is not adjusted in above-mentioned first regulating valve 61 and meets Tm> TsWhen+△ t, allow to the second regulating valve 62
It is adjusted: Tm-TsMore big then the second regulating valve 62 of difference aperture increasing degree it is bigger, until meeting Ts-△t≤To≤Ts
Keep the aperture for adjusting the second regulating valve 62 constant when+△ t.
3) work as To< TsWhen, the preferential aperture for reducing the second regulating valve 62.When 62 aperture of the second regulating valve reaches minimum can not
Also meet T when being further continued for turning downo< TsThen switch to carry out reduction processing to the aperture of the first regulating valve 61, until meeting To≥Ts-
△t。
4) when one of chilled water system breaks down, the coolant liquid of heat exchanger where another chilled water system
Outlet temperature (TmOr To) as final control target temperature TsControl amount.
Through a large amount of verification experimental verification, using technical solution of the present invention, by being used in four-pipe system cooling supply thermostat module
Double heat exchanger series connection, the chilled water of different temperatures supply different heat exchangers respectively, realize the high-precision control of final outlet temperature
System, simplifies control process, improves control efficiency and effect.
According to an embodiment of the invention, additionally providing a kind of freezing water thermostat for corresponding to freezing water thermostat
Control method.The control method of the freezing water thermostat may include: the cold source for concentrating cold source 1 to provide using four-pipe system, right
The coolant liquid of heat resource equipment 2 successively passes through First Heat Exchanger 51 and the second heat exchanger 52 carries out classification cooling, so that the heat source
The Current Temperatures of the coolant liquid of equipment 2 reach set temperature, and (outlet temperature of the coolant liquid of heat resource equipment 2, which reaches, as described in making sets
Determine outlet temperature or inlet temperature reaches setting inlet temperature).
Such as: thermostat module and concentrate cold source system between communicating data, select optimal control measure in time, avoid because
The return water temperature hysteresis quality of water return pipeline causes response speed excessively slow, causes period of waves too long；By-passing valve in module can be with
Guarantee that the water flow approximation in module is stablized, the hydraulic stability to other parallel modules is avoided to generate excessive influence.To,
It can reduce or even avoid fluctuation when refrigeration system thermostatic control to influence, solve the problems, such as temperature-controlled precision and fast and stable, keep away
Exempt from the auxiliary electrical heater equipment using energy consumption and safety difference.
Such as: four-pipe system concentrates the discharge that the condensation waste heat of lathe can be concentrated of cold source system or in workshop
Air-flow is reorganized, the comfort in workshop is improved.It is thus possible to solve making full use of for condensation waste heat and asking for discharging in time
Topic improves energy utilization rate.Wherein, two sets of water systems are independent.
Such as: high/low temperature chilled water system in thermostat module is independent, is independent of each other, can refrigeration duty to lathe into
Row quickly responds, and two systems are mutually spare.It is thus possible to avoid the occurrence of the reliability of independent cooling equipment and general
The problem of property.Such as: after the mating oil cooling machine failure of a machine tool, the matched oil of other different lathes basically can not be used cold
Machine, that is, have no idea to meet an urgent need by the method temporarily borrowed, oil cooling machine to be repaired or that purchase is new can only be waited.
As a result, by the way that concatenated two heat exchangers are arranged in thermostat module, it can use four-pipe system and cold source concentrated to provide
Cold source cooled down step by step to the coolant liquid of heat resource equipment so that the Current Temperatures of the coolant liquid of heat resource equipment reach setting temperature
Degree, control process is simple, and the high reliablity that cools, safety are good.
It is alternatively possible to as shown in connection with fig. 2 to heat resource equipment in the control method of freezing water thermostat of the invention
Coolant liquid successively passes through First Heat Exchanger and the second heat exchanger carries out the flow diagram for being classified an embodiment of cooling, further
Illustrate that successively passing through First Heat Exchanger 51 and the second heat exchanger 52 to the coolant liquid of heat resource equipment 2 carries out the specific mistake of classification cooling
Journey may include: coarse tuning process and fine-tuning process (or accurate adjustment process), referring specifically to step S110 and step S120.
Such as: using heat exchangers in series (two heats exchangers in series inside such as thermostat module) in thermostat module, realize
Coarse adjustment and fine tuning are able to satisfy constant-temperature high-precision control.
At step S110, being concentrated by four-pipe system can be used for conveying the of the first set temperature chilled water in cold source 1
One chilled water transfer pipeline is changed through the first chilled water in parallel with the first coolant liquid heat exchanger tube in the First Heat Exchanger 51
After heat pipe, it is back to the four-pipe system and concentrates the can be used in cold source 1 received from the first freezing water heat exchanger tube discharge
In first chilled water return line of one heat-exchanging water, realizes and the first setting amplitude is carried out to the coolant liquid of the heat resource equipment 2
First cooling processing.Wherein, the first chilled water return line can be used for received from the first freezing water heat exchanger tube discharge
With the first heat-exchanging water after the heat exchange of the first coolant liquid heat exchanger tube of the First Heat Exchanger 51.And
More optionally, the first cooling for carrying out the first setting amplitude to the coolant liquid of the heat resource equipment 2 is handled, and can wrap
It includes: in the case where the freezing water thermostat can also include the first regulating valve 61, according to set temperature (such as the target of setting
Temperature Ts) control first regulating valve 61, until entering the first set temperature chilled water of the First Heat Exchanger 51 for institute
State medium temperature (such as T of coolant liquid between First Heat Exchanger 51 and second heat exchanger 52m) freezing be reduced to the first setting
Temperature range (such as Ts-△t≤Tm≤TsT≤1 t+1,0≤△+△ and △ t is adjustable) after, keep first regulating valve 61
Aperture is constant.
Such as: example shown in Figure 1 mainly can wrap the control process of water system (referring mainly to thermostat module)
It includes: according to the target temperature T of settings, control the first regulating valve 61 and make the cryogenic freezing water flow for entering First Heat Exchanger 51
Medium temperature can be dropped to T as early as possibles-△t≤Tm≤Ts+ △ t+1 (t≤1 0≤△ and △ t is adjustable), then keeps first
The aperture of regulating valve 61 is constant.
It is freezed as a result, by adjusting valve regulation by first according to set temperature through the first set temperature of First Heat Exchanger
Water flow, after the Current Temperatures of the coolant liquid between First Heat Exchanger and the second heat exchanger are reduced to the first set temperature range
It keeping the aperture of the first regulating valve constant, realizes the coarse adjustment to medium temperature in the Current Temperatures of coolant liquid, control mode is easy,
Control result is reliable.
At step S120, being concentrated by four-pipe system can be used for conveying the of the second set temperature chilled water in cold source 1
Two chilled water transfer pipelines are back to the four-pipe system collection after the second freezing water heat exchanger tube in second heat exchanger 52
It can be used for the second chilled water return pipe of the second heat-exchanging water received from the second freezing water heat exchanger tube discharge in middle cold source 1
Lu Zhong realizes the coolant liquid to the heat resource equipment 2 in the setting of further progress second amplitude after first cooling processing
The second cooling processing.Wherein, the second chilled water return line can be used for received from the second freezing water heat exchanger tube 52
The second heat-exchanging water after the second coolant liquid heat exchanger tube heat exchange with second heat exchanger of discharge.Such as: the second coolant liquid is changed
Heat pipe can be arranged in parallel between the second freezing water heat exchanger tube, can also be socketed setting, be also possible to be able to achieve second
The other set-up modes to exchange heat between coolant liquid heat exchanger tube and the second freezing water heat exchanger tube.
Such as: four-pipe system cooling supply thermostat module is connected using double heat exchanger, and the chilled water of different temperatures supplies difference respectively
Heat exchanger；First heat exchanger supply low temperature chilled water, fast cooling make medium temperature level off to target temperature, and second
Heat exchanger supply high temperature chilled water, fine tuning chilled-water flow is to realize the high-precision control of final outlet temperature.Here, four pipe
Cooling supply processed refers to that thermostat module has 2 sets of cooling water supply systems, 4 connecting tubes.
Such as: graded temperature-control finely tunes temperature after first coarse adjustment temperature.According to (the i.e. import of thermostat module of heat resource equipment outlet temperature
Temperature) rate of change, the flux change velocity for adjusting first cryogenic freezing water- to-water heat exchanger is adapted therewith, in combination in
Between temperature and target temperature difference, the flow of the low temperature chilled water of first heat exchanger of comprehensively control；Because of medium temperature control
Make more stable and close to target temperature, therefore medium temperature and outlet temperature are relatively, therefore second heat exchanger changes
Heat is fewer, realizes that the control of the small temperature difference (difference of medium temperature and outlet temperature) big flow is more stable, finely tunes water flow.
Such as: according to the set temperature (i.e. the target value of outlet temperature) of user, determine the supply temperature of high temperature chilled water
And it is close, realize that the small temperature difference (temperature difference between the different fluid of heat exchanger two sides) big flow exchanges heat, therefore high temperature freezes
The flow control valve adjustable extent of water is bigger, is suitble to the adjusting of accurate temperature controlling.
As a result, by concentrating the first set temperature chilled water of cold source offer through First Heat Exchanger to heat source using four-pipe system
The coarse adjustment control that the temperature of the coolant liquid of equipment cools down, and the second setting temperature for concentrating cold source to provide using four-pipe system
The fine tuning control that degree chilled water is cooled down through temperature of second heat exchanger to the coolant liquid of heat resource equipment, and then pass through elder generation
The control that cools of coarse adjustment fine tuning again makes the temperature of coolant liquid precisely reach set temperature, and control precision is high.
More optionally, to the coolant liquid of the heat resource equipment 2 in the further progress second after first cooling processing
Second cooling of setting amplitude is handled, and may include: can also be including the feelings of the second regulating valve 62 in the freezing water thermostat
Under condition, if first regulating valve 61 does not adjust and medium temperature (such as Tm) it is greater than the upper limit of the second set temperature range
(such as Ts+ △ t) in the case where, according to medium temperature (such as Tm) with difference (such as T of the set temperaturem-Ts) described in control
Second regulating valve 62, until the outlet temperature of second heat exchanger 52 is reduced to the second set temperature range (such as Ts-△t
≤To≤Ts+ △ t) after, keep the aperture of second regulating valve 62 constant.
Such as: example shown in Figure 1 can also mainly wrap the control process of water system (referring mainly to thermostat module)
It includes: not being adjusted in above-mentioned first regulating valve 61 and meet Tm> TsWhen+△ t, allow to adjust the second regulating valve 62
Section: Tm-TsMore big then the second regulating valve 62 of difference aperture increasing degree it is bigger, until meeting Ts-△t≤To≤TsWhen+△ t
Keep the aperture for adjusting the second regulating valve 62 constant.
As a result, by the case where the first regulating valve is not adjusted and medium temperature is greater than the upper limit of the second set temperature range
Under, the aperture of the second regulating valve is controlled according to the difference of medium temperature and set temperature, until will be cold at the second heat exchanger exit
But it after the outlet temperature of liquid is reduced to the second set temperature range, keeps the aperture of the second regulating valve constant, realizes to coolant liquid
Current Temperatures middle outlet temperature preliminary accurate adjustment, high reliablity, accuracy are good.
Further optionally, a laggard stepping is being handled through first cooling to the coolant liquid of the heat resource equipment 2
Row second sets the second cooling processing of amplitude, can also include: to combine the first regulating valve and second in the second cooling processing
The process that regulating valve is finely adjusted.
Below with reference in the control method of freezing water thermostat of the invention shown in Fig. 3 the second cooling processing in combine
The flow diagram for the embodiment that first regulating valve and the second regulating valve are finely adjusted is further illustrated and is handled in the second cooling
The detailed process that middle the first regulating valve of combination and the second regulating valve are finely adjusted, may include: step S210 and step S220.
Step S210 reduces the aperture of second regulating valve 62 if the outlet temperature is less than the set temperature.
Step S220, if the aperture of second regulating valve 62 reach the minimum aperture of setting after the outlet temperature still
Less than the set temperature, then reduce the aperture of first regulating valve 61, until the outlet temperature is more than or equal to described
The lower limit of second set temperature range.
Such as: example shown in Figure 1 can also mainly wrap the control process of water system (referring mainly to thermostat module)
It includes: working as To< TsWhen, the preferential aperture for reducing the second regulating valve 62.It can not be further continued for when 62 aperture of the second regulating valve reaches minimum
Also meet T when turning downo< TsThen switch to carry out reduction processing to the aperture of the first regulating valve 61, until meeting To≥Ts-△t。
As a result, by reducing in the case where the outlet temperature of the exit coolant liquid of the second heat exchanger is less than set temperature
The aperture of second regulating valve, and the aperture of the second regulating valve be decreased to setting minimum aperture after the outlet temperature still less than
Reduce the aperture of the first regulating valve in the case where set temperature again, until the outlet temperature is greater than or equal to the second set temperature model
The lower limit enclosed realizes the further accurate adjustment to the outlet temperature, so that more accurate to the cooling constant temperature processing of coolant temperature,
Also much sooner and reliably.
In an optional embodiment, if can also include: the first chilled water transfer pipeline, the second chilled water delivery pipe
A chilled water transfer pipeline in road breaks down, then with the cooling of the heat exchanger where another chilled water transfer pipeline
The outlet temperature of liquid is as the control amount for controlling the cooling constant temperature processing.
Such as: example shown in Figure 1 can also mainly wrap the control process of water system (referring mainly to thermostat module)
It includes: when one of chilled water system breaks down, the cooling liquid outlet temperature of heat exchanger where another chilled water system
Spend (TmOr To) as final control target temperature TsControl amount.
As a result, by being gone out in a chilled water transfer pipeline failure with heat exchanger where another chilled water transfer pipeline
The outlet temperature of coolant liquid is realized as control amount and is handled the cooling constant temperature of the coolant liquid of heat resource equipment at mouthful, is greatly improved
Flexibility and reliability to the cooling constant temperature processing of the coolant liquid of heat resource equipment.
The processing and function realized by the method for the present embodiment essentially correspond to aforementioned freezing water termostat shown in FIG. 1
Embodiment, principle and the example of device, therefore not detailed place in the description of the present embodiment, may refer to the phase in previous embodiment
It speaks on somebody's behalf bright, this will not be repeated here.
Through a large amount of verification experimental verification, using the technical solution of the present embodiment, by graded temperature-control, finely tuned after first coarse adjustment temperature
Temperature realizes that the control of the small temperature difference (i.e. the difference of medium temperature and outlet temperature) big flow is more stable, improves control precision.
To sum up, it will be readily appreciated by those skilled in the art that under the premise of not conflicting, above-mentioned each advantageous manner can be certainly
It combined, be superimposed by ground.
The above description is only an embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should be included within scope of the presently claimed invention.
Claims (12)
1. a kind of freezing water thermostat characterized by comprising four-pipe system concentrates cold source (1) and thermostat module (3)；It is described
Thermostat module (3), comprising: First Heat Exchanger (51) and the second heat exchanger (52)；Wherein,
The second coolant liquid heat exchange of the first coolant liquid heat exchanger tube, second heat exchanger (52) of the First Heat Exchanger (51)
The coolant line of pipe and heat resource equipment (2), series connection form the coolant liquid heat-radiation loop of the heat resource equipment (2), for benefit
The cold source for concentrating cold source (1) to provide with the four-pipe system, carries out classification cooling to the coolant liquid of the heat resource equipment (2), so that
The Current Temperatures of the coolant liquid of the heat resource equipment (2) reach set temperature.
2. the apparatus according to claim 1, which is characterized in that wherein,
The four-pipe system is concentrated in cold source (1) for conveying the first chilled water transfer pipeline of the first set temperature chilled water, warp
In the First Heat Exchanger (51) after the first freezing water heat exchanger tube, it is back to the four-pipe system and concentrates in cold source (1) for receiving
From in the first chilled water return line of the first heat-exchanging water of the first freezing water heat exchanger tube discharge, to realize to the heat source
The coolant liquid of equipment (2) carries out the first cooling processing of the first setting amplitude；
The four-pipe system is concentrated in cold source (1) for conveying the second chilled water transfer pipeline of the second set temperature chilled water, warp
In second heat exchanger (52) after the second freezing water heat exchanger tube, it is back to the four-pipe system and concentrates in cold source (1) for receiving
From in the second chilled water return line of the second heat-exchanging water of the second freezing water heat exchanger tube discharge, to realize to the heat source
The coolant liquid of equipment (2) is handled in the second cooling that further progress second sets amplitude after first cooling processing.
3. the apparatus of claim 2, which is characterized in that the thermostat module (3), further includes: the first regulating valve
(61) and the second regulating valve (62)；Wherein,
First regulating valve (61), setting is between the first chilled water transfer pipeline and the first freezing water heat exchanger tube
Pipeline in, for the first temperature control mode according to setting, first cooling processing is adjusted；
Second regulating valve (62), setting is between the second chilled water transfer pipeline and the second freezing water heat exchanger tube
Pipeline in, for the second temperature control mode according to setting, second cooling processing is adjusted.
4. device according to claim 3, which is characterized in that the thermostat module (3), further includes: the first by-passing valve
(71) and the second by-passing valve (72)；Wherein,
First by-passing valve (71) is arranged between first regulating valve (61) and the first chilled water return line
In pipeline, for making from first after first regulating valve (61) turns down the chilled-water flow of the first chilled water heat exchanging pipe
The extra chilled water of chilled water transfer pipeline conveying is passed through by first by-passing valve (71)；
Second by-passing valve (72) is arranged between second regulating valve (62) and the second chilled water return line
In pipeline, for making from second after second regulating valve (62) turns down the chilled-water flow of the second chilled water heat exchanging pipe
The extra chilled water of chilled water transfer pipeline conveying is passed through by second by-passing valve (72).
5. device according to claim 4, which is characterized in that the thermostat module (3), further includes: controller (4), temperature
Spend sensor and pump (8)；Wherein,
The temperature sensor is arranged in the First Heat Exchanger (51), the import of second heat exchanger (52), centre, goes out
At at least one position in mouthful, for acquiring the Current Temperatures at the position；
The pump (8) is arranged in the coolant liquid heat-radiation loop, and the coolant liquid for controlling the heat resource equipment (2) is worked as
Preceding flow；
The controller (4) concentrates cold source (1) communication connection with the four-pipe system, for according to the Current Temperatures and setting
Temperature controls the four-pipe system and concentrates cold source (1), first regulating valve (61), second regulating valve (62), described first
At least one of by-passing valve (71), second by-passing valve (72), the pump (8) are realized to the cold of the heat resource equipment (2)
But the control of the Current Temperatures of liquid and/or present flow rate.
6. device described in one of -5 according to claim 1, which is characterized in that wherein,
The quantity of the thermostat module (3) is more than one；
When the quantity of the thermostat module (3) is more than two, more than two thermostat modules (3) are arranged in parallel, and are used for
Cooling constant temperature processing is carried out to the coolant liquid of more than two heat resource equipments (2) respectively；
And/or
In one thermostat module (3), the quantity of the First Heat Exchanger (51) is more than one and/or described second changes
The quantity of hot device (52) is more than one.
7. a kind of such as the control method of any of claims 1-6 for freezing water thermostat, which is characterized in that packet
It includes:
The cold source for concentrating cold source (1) to provide using four-pipe system, successively passes through First Heat Exchanger to the coolant liquid of heat resource equipment (2)
(51) and the second heat exchanger (52) carries out classification cooling, sets so that the Current Temperatures of the coolant liquid of the heat resource equipment (2) reach
Determine temperature.
8. being changed the method according to the description of claim 7 is characterized in that successively passing through first to the coolant liquid of heat resource equipment (2)
Hot device (51) and the second heat exchanger (52) carry out classification cooling, comprising:
It is concentrated in cold source (1) by four-pipe system for conveying the first chilled water transfer pipeline of the first set temperature chilled water, warp
In the First Heat Exchanger (51) after the first freezing water heat exchanger tube, it is back to the four-pipe system and concentrates in cold source (1) for receiving
From in the first chilled water return line of the first heat-exchanging water of the first freezing water heat exchanger tube discharge, realization sets the heat source
The coolant liquid of standby (2) carries out the first cooling processing of the first setting amplitude；And
It is concentrated in cold source (1) by four-pipe system for conveying the second chilled water transfer pipeline of the second set temperature chilled water, warp
In second heat exchanger (52) after the second freezing water heat exchanger tube, it is back to the four-pipe system and concentrates in cold source (1) for receiving
From in the second chilled water return line of the second heat-exchanging water of the second freezing water heat exchanger tube discharge, realization sets the heat source
The coolant liquid of standby (2) is handled in the second cooling that further progress second sets amplitude after first cooling processing.
9. method according to claim 7 or 8, which is characterized in that carry out first to the coolant liquid of the heat resource equipment (2)
First cooling of setting amplitude is handled, comprising:
In the case where the freezing water thermostat further includes the first regulating valve (61), adjusted according to set temperature control described first
Save valve (61), until enter the First Heat Exchanger (51) the first set temperature chilled water by the First Heat Exchanger (51) with
After the medium temperature freezing of coolant liquid is reduced to the first set temperature range between second heat exchanger (52), described the is kept
The aperture of one regulating valve (61) is constant.
10. according to the method described in claim 9, it is characterized in that, to the coolant liquid of the heat resource equipment (2) through described
Further progress second sets the second cooling processing of amplitude after one cooling processing, comprising:
In the case where the freezing water thermostat further includes the second regulating valve (62), if first regulating valve (61) is not adjusted
And in the case where the upper limit of the medium temperature greater than the second set temperature range, according to the medium temperature and setting temperature
The difference of degree controls second regulating valve (62), until being reduced to second to set the outlet temperature of second heat exchanger (52)
After determining temperature range, keep the aperture of second regulating valve (62) constant.
11. according to the method described in claim 10, it is characterized in that, to the coolant liquid of the heat resource equipment (2) described in the warp
Further progress second sets the second cooling processing of amplitude after first cooling processing, further includes:
If the outlet temperature is less than the set temperature, reduce the aperture of second regulating valve (62)；
If the outlet temperature is set still less than described after the aperture of second regulating valve (62) reaches the minimum aperture of setting
Determine temperature, then reduce the aperture of first regulating valve (61), until the outlet temperature is greater than or equal to second setting
The lower limit of temperature range.
12. the method according to one of claim 8-11, which is characterized in that further include:
If a chilled water transfer pipeline in the first chilled water transfer pipeline, the second chilled water transfer pipeline breaks down,
At using the outlet temperature of the coolant liquid of the heat exchanger where another chilled water transfer pipeline as the control cooling constant temperature
The control amount of reason.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811134138.5A CN109253515A (en) | 2018-09-27 | 2018-09-27 | A kind of freezing water thermostat and its control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811134138.5A CN109253515A (en) | 2018-09-27 | 2018-09-27 | A kind of freezing water thermostat and its control method |
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| CN109253515A true CN109253515A (en) | 2019-01-22 |
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| CN201811134138.5A Pending CN109253515A (en) | 2018-09-27 | 2018-09-27 | A kind of freezing water thermostat and its control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109812868A (en) * | 2019-02-01 | 2019-05-28 | 广东志高暖通设备股份有限公司 | The coil pipe of 4-pipe blower that a kind of heating capacity and refrigerating capacity are close |
| CN112462816A (en) * | 2020-10-30 | 2021-03-09 | 北京空间飞行器总体设计部 | Self-adaptive temperature control method for improving temperature stability of system |
| CN115264690A (en) * | 2022-07-22 | 2022-11-01 | 珠海格力电器股份有限公司 | Bypass heat exchange structure, four-pipe heating recovery system, air conditioning unit and control method |
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| CN115264690A (en) * | 2022-07-22 | 2022-11-01 | 珠海格力电器股份有限公司 | Bypass heat exchange structure, four-pipe heating recovery system, air conditioning unit and control method |
| CN115264690B (en) * | 2022-07-22 | 2024-05-14 | 珠海格力电器股份有限公司 | Bypass heat exchange structure, four-pipe heating recovery system, air conditioning unit and control method |
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