CN103307711B - Air-conditioner control system and control method - Google Patents
Air-conditioner control system and control method Download PDFInfo
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- CN103307711B CN103307711B CN201310226546.4A CN201310226546A CN103307711B CN 103307711 B CN103307711 B CN 103307711B CN 201310226546 A CN201310226546 A CN 201310226546A CN 103307711 B CN103307711 B CN 103307711B
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- 238000000034 method Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 183
- 238000004378 air conditioning Methods 0.000 claims abstract description 22
- 238000004146 energy storage Methods 0.000 claims description 9
- 230000005520 electrodynamics Effects 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 3
- 238000004134 energy conservation Methods 0.000 abstract description 7
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 description 11
- 230000008859 change Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 6
- 239000002826 coolant Substances 0.000 description 6
- 229910052731 fluorine Inorganic materials 0.000 description 6
- 239000011737 fluorine Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
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- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
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- 230000009897 systematic effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000009998 heat setting Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
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Abstract
A kind of air-conditioner control system of present invention offer and control method, this air-conditioner control system includes first class control system, second control system, indoor set, switch board and connect above-mentioned first class control system, second control system and the water pipe of indoor set, above-mentioned switch board is electrically connected to first class control system, in second control system and indoor set, above-mentioned first class control system includes main frame, water pipe includes outlet pipe and return pipe, first class control system also includes the one-level variable frequency pump being positioned close to position of host machine, second control system includes the energy-accumulating water tank being connected with outlet pipe and return pipe two ends, and it is positioned close to two grades of variable frequency pumps of energy-accumulating water tank.Air conditioning system of the present invention and control method, the most energy-conservation but also improve the intellectuality of control and precision and sensitivity.
Description
Technical field
The present invention relates to gas air-conditioning technical, particularly relate to a kind of air-conditioner control system and control method.
Background technology
Along with social development, greatly to office building, little to inhabitation offices such as home dwellings, central hollow
Adjust application the most universal.At present, central air conditioner system mainly has following two type, below lifts
Example illustrates existing two kinds of main central air conditioner systems.
First kind central air conditioner system: air-cooled (water-cooled, Di Yuan) group central, with wind
As a example by cold, industry is commonly called as water system central air-conditioning.
As it is shown in figure 1, the hot water with energy of main frame 11 generation or chilled water, produce water pump 13
Raw power is transported to room conditioning case 14 by water pipe 12 and fan coil 15 absorbs heat or puts
Heat, thus the energy contained by hot water or chilled water reaches to heat or freeze purpose.
The pluses and minuses of water system central air-conditioning:
1.1: due to main frame evaporation and cooling system dispatch from the factory time integral installation prepare, runtime host
Efficiency ensure that, and will not due to pipeline length change and change the efficiency of main frame itself.
1.2: cost compares relatively low.
1.3: loine pressure is low, longer than high-pressure system relative to the life-span.
The defect of conventional central air-conditioning:
2.1: water pump frequency surely runs, it is impossible to is adjusted according to payload, transports at underload especially
Consume energy very much during row.
2.2: main frame carries out out according to water temperature, shut down and be adjusted, often occur when load variations
Frequent start-stop phenomenon, consumes energy very much.
2.3: main frame is according to water temperature start and stop, it may appear that load excessively or unloading is excessive.
The intelligence degree of above-mentioned water central air conditioner system is relatively low, it is impossible to meet people to intelligent electrical apparatus
Demand.
Equations of The Second Kind central air conditioner system: VRV system, industry is commonly called as fluorine system.
Transmitted as in figure 2 it is shown, off-premises station 21 produces the coolant fluorine with energy by coolant copper pipe 22
To indoor set 24, indoor set 24 is controlled by controller 23, and coolant fluorine passes through coolant copper pipe
It is circulated utilization, indoor temperature is adjusted.
The advantage of VRV central air conditioner system:
3.1: main frame can carry out converting operation according to indoor set operation conditions, the most energy-conservation.
3.2: install more convenient.
3.3: system band control system own, add charging, management etc. easy to control.
The shortcoming of VRV central air conditioner system:
4.1: systematic energy efficiency ratio converts along with the conversion of actual pipeline, factory when actual installation is run
Energy Efficiency Ratio is only provided that reference.
4.2: coolant rushes fluence greatly, and pressure is high, pipeline easily leaks fluorine, and checks non-for leak source
Often trouble.
4.3: for relatively fixed frequency machine, plasticator is easily damaged, and accessory cost is high.
4.4: each system most producer peak power at present only has 48, and (refrigerating capacity about 130kw is left
Right), several system is needed for large area occasions such as office blocks.
4.5: owing to pipeline is long, starting power about about 10% when system is run, if opening 1.5 be
During system, actual motion power according to system size is different with the length of pipeline may be at about 5.
4.6: coolant itself is nonpoisonous and tasteless, but there will be poisoning when space solubility reaches 0.3kg/m2
Death incident, therefore, once reveals and will produce security incident, and for preventing from revealing, pipeline intensity is wanted
Asking the highest, therefore, cost is also the most of a relatively high.
4.7:VRV system is in order to ensure plasticator oil return, it is necessary to timing carries out oil return action, i.e. portion
Positive opening expansion valve in the case of extension set group cut out, can produce unnecessary waste.
Water system central air-conditioning as shown in Figure 1 above, belongs to fixed frequency air conditioner, as shown in Figure 2 above
Fluorine CS central air-conditioning, belong to convertible frequency air-conditioner.Relatively above two air-conditioning, when oepration at full load,
During the energy that the energy that i.e. main frame produces needs equal to load, in terms of Energy Efficiency Ratio, fixed frequency air conditioner efficiency
More than convertible frequency air-conditioner；When underrun, the energy that the energy that i.e. main frame produces needs more than load
Time, in terms of Energy Efficiency Ratio, fixed frequency engine efficiency is less than or equal to frequency changer efficiency.
Above two central air-conditioning, the energy produced when underrun all can not store, and makes
Become unnecessary waste.
But, both the above system all has respective pluses and minuses, in the above-mentioned two kinds of systems of various occasions also
Can not substitute completely.But both the above system is respectively arranged with unsurmountable shortcoming, overall operation efficiency is relatively low,
All can produce unnecessary energy waste, although two kinds of systems all have a corresponding control system, but cost
Expensive, installation trouble, debugging complexity.Therefore, it is necessary to a kind of installation and debugging of exploitation are easy, cost
Relatively low, energy-conservation and there is the air conditioning system of intelligence control system.
As it is shown on figure 3, be prior art central air conditioner system schematic diagram when heating, to set backwater
As a example by temperature 40 DEG C, owing to specific heat of water is big, when heating, water temperature is relatively low, when temperature is less than 40 DEG C,
Time such as below 38 DEG C, main frame progressively starts, until water temperature continues to load before arriving 40 DEG C, goes out
During underload, main frame all starts now, when water temperature is higher than 40 DEG C, such as when arriving 42 DEG C, and main frame
Progressively shut down and unload, it may appear that the loading phenomenon excessively when excess temperature is higher than 42 DEG C, owing to controlling
Inaccuracy is insensitive thus causes the waste of energy.
As shown in Figure 4, schematic diagram when being prior art central air conditioner system refrigeration, to set backwater temperature
As a example by spending 12 DEG C, during refrigeration, water temperature is higher, and temperature even above 14 DEG C higher than 12 DEG C, higher than 14 DEG C
Time, main frame progressively starts, until water temperature reaches to continue to load when 12 DEG C, and master when occurring in underload
Machine all starts, when water temperature is less than 12 DEG C, such as, when reaching 10 DEG C, main frame is progressively shut down and unloaded
Carry, it may appear that temperature less than 10 DEG C time cross loading phenomenon, due to control inaccuracy insensitive thus
Cause the waste of energy.
When prior art heats and freezes, owing to factory is in view of the versatility of equipment, complete machine controls
Real system controls inaccuracy insensitive and cause the waste of energy, therefore, it is necessary to provide one
Control the sensitiveest and energy-conservation central air-conditioning and start method.
Summary of the invention
For current central air conditioner system or do not have intellectuality, or intelligence degree is higher but makes
High price is expensive, install trouble, debug complicated problem, and the present invention provides a kind of relatively low installation of cost
Debugging simplicity, and intelligentized air-conditioner control system and control method.
The energy storage that main frame produces when underload can not be got up for current central air conditioner system,
The problem causing unnecessary waste, the present invention provides one to be produced when underrun by main frame
Energy storage get up, improve systematic energy efficiency ratio and energy-conservation air-conditioner control system and control method.
A kind of air-conditioner control system, including first class control system, second control system, indoor set, control
Cabinet processed and connect above-mentioned first class control system, second control system and water pipe, above-mentioned switch board is electrically connected
Being connected in first class control system, second control system and indoor set, above-mentioned first class control system includes main
Machine, water pipe includes outlet pipe and return pipe,
First class control system also includes the one-level variable frequency pump being positioned close to position of host machine；
Second control system includes the energy-accumulating water tank being connected with outlet pipe and return pipe two ends, and arranges
At two grades of variable frequency pumps near energy-accumulating water tank.
Another aspect of the present invention, it is provided that a kind of air conditioning control method, including:
Step S1: switch board gathers main frame outlet pipe and the temperature and pressure of return pipe, controls one-level
The running frequency of variable frequency pump；
Step S2: switch board gathers indoor set water outlet and the temperature of backwater and water outlet pressure of return water,
The running frequency of two grades of variable frequency pumps of ambient temperature state modulator.
A kind of air-conditioner control system of present invention offer and control method thereof, it includes two stage control system
And the running frequency of two-stage frequency conversion water pump, system is provided with energy-accumulating water tank, the master gathered by switch board
Machine, indoor set, energy-accumulating water tank temperature and pressure and ambient temperature, by two stage control system control
The running frequency of two-stage frequency conversion water pump, the most energy-conservation but also improve the intellectuality of control and precision and spirit
Sensitivity.
Accompanying drawing explanation
Fig. 1 is prior art water system central air-conditioning schematic diagram.
Fig. 2 is prior art fluorine CS central air-conditioning schematic diagram.
Fig. 3 is prior art central air conditioner system unit starting pinciple figure when heating.
Unit starting pinciple figure when Fig. 4 is prior art central air conditioner system refrigeration.
Fig. 5 is central air-conditioning structural representation of the present invention.
Fig. 6 is central air conditioner system host computer side structural representation of the present invention.
Module side schematic diagram when Fig. 7 is central air conditioner system of the present invention only host work.
Module side schematic diagram when Fig. 8 is central air conditioner system energy storage water tank accumulation of energy of the present invention.
Module side schematic diagram when Fig. 9 is central air conditioner system energy storage water tank energy supply of the present invention.
Detailed description of the invention
Embodiments of the invention are described with reference to the accompanying drawings.An accompanying drawing or a kind of real in the present invention
Execute the element described in mode and feature can be with one or more other accompanying drawings or embodiment
Shown in element and feature combine.It should be noted that, in order to understand purpose, accompanying drawing and explanation save
Omit unrelated to the invention, parts known to persons of ordinary skill in the art and the expression of process and retouched
State.
The invention provides a kind of air-conditioner control system, including first class control system, second control system,
Indoor set, switch board and connect the water of above-mentioned first class control system, second control system and indoor set
Pipe, above-mentioned switch board is electrically connected in first class control system, second control system and indoor set, above-mentioned
First class control system includes that main frame, water pipe include outlet pipe and return pipe, wherein:
First class control system also includes the one-level variable frequency pump being positioned close to position of host machine；
Second control system includes the energy-accumulating water tank being connected with outlet pipe and return pipe two ends, and arranges
At two grades of variable frequency pumps near energy-accumulating water tank.
Alternatively, described outlet pipe and return pipe are arranged near position of host machine, and outlet pipe and return pipe
On be provided with pressure transducer and temperature sensor, first class control system includes main frame and near main frame
The electrodynamic valve that position is arranged.
Alternatively, described switch board is arranged at the temperature sensor near outlet pipe and setting for obtaining
The temperature difference of the temperature sensor senses near return pipe, and control one-level frequency conversion according to the temperature difference obtained
The running frequency of water pump.
Alternatively, the two ends of described energy-accumulating water tank are connected with outlet pipe and return pipe respectively, energy-accumulating water tank
It is provided with temperature sensor on the pipeline being connected with return pipe, energy-accumulating water tank is also provided with temperature sensor.
Alternatively, described indoor set is respectively arranged at two ends with temperature sensor, and described switch board is used for gathering
Arrange on the pipeline that the temperature of the temperature sensor at indoor set two ends, energy-accumulating water tank are connected with return pipe
The temperature of temperature sensor and energy-accumulating water tank temperature, and the fortune of two grades of variable frequency pumps is controlled according to the temperature difference
Line frequency.
Alternatively, the two ends of described indoor set are also equipped with pressure transducer.
Alternatively, described energy-accumulating water tank is V-type spout energy-accumulating water tank.
As shown in Figure 5, Figure 6, a kind of air-conditioner control system, including first class control system, two grades of controls
System processed, indoor set 51 and 52, switch board 99 and in being arranged at this air-conditioner control system, even
Connect above-mentioned first class control system, second control system and the water pipe of indoor set 51 and 52.Water pipe includes
Outlet pipe 91 and return pipe 92.Switch board 99 is electrically connected to first class control system, Two-stage control system
In system and indoor set 51 and 52, wherein,
First class control system includes main frame 31,32, electrodynamic valve 35,36, and one-level variable frequency pump
41, electrodynamic valve 35 is arranged on return pipe 92 on the position of main frame 31, and electrodynamic valve 36 is arranged
On return pipe 92 on the position of main frame 32；Another kind of embodiment, electrodynamic valve 35,36 can
To be arranged on outlet pipe 91 on the position of main frame 31,32；
Second control system includes being connected with outlet pipe 91 and return pipe 92 respectively and be cascaded
Energy-accumulating water tank 81,82, and two grades of variable frequency pumps 42；Preferably, energy-accumulating water tank 81 of the present invention,
82 is V-type spout energy-accumulating water tank, and is labyrinth type energy-accumulating water tank, certainly, and energy-accumulating water tank 81,82
Can also be according to system size, the otherwise designed such as main frame minimum operation power.
Outlet pipe 91 and return pipe 92 connect main frame 31 and 32, energy-accumulating water tank 81 and 82, indoor
Machine 51 and 52.
Main frame 31 and 32 water outlet is provided with pressure transducer 64 and temperature sensor 72,
It is provided with pressure transducer 63 and temperature sensor 71 near main frame 31 and 32 water return outlet；
Indoor set 51,52 water inlet is provided with pressure transducer 61 and temperature sensor 73,
Indoor set 51,52 water outlet is provided with pressure transducer 62 and temperature sensor 74；
Energy-accumulating water tank 81 water outlet is provided with temperature sensor 75, energy-accumulating water tank 81 sets
It is equipped with temperature sensor 76；
The force value of pressure transducer 61,62,63,64 sensing, temperature sensor 71,72,73,
74, the pressure in the temperature values of 75,76 detections and outlet pipe 91 and return pipe 92, temperature and
Water amount parameters can be sent in switch board 99, in order to whole central air conditioner system is entered by switch board 99
Row intelligentized control method.
When main frame 31,32 runs, it is desirable to specified discharge, in the case of this discharge, pressure
The pressure differential of sensor 63 and pressure transducer 64 is fixed all the time, and one-level variable frequency pump 41 is according to master
The flow of machine 31,32 and lift are selected.
When opening main frame 31, electrodynamic valve 35 is opened, and one-level variable frequency pump 41 is according to pressure sensing
The pressure differential of device 63 and pressure transducer 64 is run.Now, collecting temperature sensor 71 and temperature
The temperature difference of sensor 72 is poor with the adjustment water outlet of main frame 31, return water temperature, generally, main
The water outlet of machine 31 and return water temperature difference are 5 DEG C, adjust the running frequency of one-level variable frequency pump 41, make
Obtain main frame 31 and operate in efficient district all the time, it is possible to reduce the power consumption of one-level variable frequency pump 41.
When the power of main frame 31 does not reaches the power requirement of indoor set 51,52, open main frame simultaneously
32, now, electrodynamic valve 36 is opened, and 41 liters of altofrequencies of one-level variable frequency pump are to meet two unit need
The discharge wanted.Now, the temperature difference of collecting temperature sensor 71 and temperature sensor 72 is to adjust
The water outlet of main frame 31,32, return water temperature are poor, generally, and the water outlet of main frame 31,32 and returning
Coolant-temperature gage difference is 5 DEG C, adjusts the operational efficiency of one-level variable frequency pump 41 so that main frame 31,32 begins
Operate in high school district eventually, it is possible to reduce the power consumption of one-level variable frequency pump 41.
In actual pump type selecting, in addition to water outlet and pressure of return water difference, pipe resistance is difficult to determine,
One-level variable frequency pump 41 by 120% type selecting of calculating power, thus causes pump power substantially
Waste, when main frame 31,32 part is run, waste is very serious especially, and at main frame 31,32
Running may cause the change of resistance, pressure transducer 63,64 is set, it is possible to automatically adopt
Collection pressure change, in order to one-level variable frequency pump 41 adjusts adaptation automatically, and can block up by automatic discrimination
Plug situation.
Switch board 99 calculates temperature according to the water outlet collected from temperature sensor 73,74 and return water temperature
Difference, the calculation of pressure pressure differential collected from pressure transducer 61,62 and ambient temperature etc. gather
Calculate in data feeding system, result of calculation is sent to converter by 0V-10V voltage and enters
Row regulating frequency, thus regulate the conveying power of two grades of variable frequency pumps 42；When load is big, increase
Two grades of variable frequency pump 42 power, reduce the power of two grades of variable frequency pumps 42, but reduce during load reduction
Ensure indoor set 51,52 temperature difference while power, improve running efficiency of system.Simultaneously for pipeline
Complicated system, increases a loop temperature collection, in order to collect more accurately water temperature difference, pressure
The parameters such as difference and ambient temperature, and accurately calculate, accurately adjust the merit of two grades of variable frequency pumps 42
Rate, in order to whole system self-adapting operation.
As above-mentioned, switch board 99 is according to temperature computation temperature difference, pressure and the ambient temperature collected
Calculate etc. parameter, carry out two-stage frequency conversion by one-level variable frequency pump 41 and two grades of variable frequency pumps 42
Control, make control more precision and the intellectuality of whole central air conditioner system.
As shown in Figure 7 and combine Fig. 5, main frame 31,32 is properly functioning, just meet indoor set 51,
During 52 operation, the current in water pipe flow out from outlet pipe 91, along side shown in Fig. 7 band arrow dotted line
To operation, and carry out backwater by return pipe 92, indoor set is carried out energy supply.
As shown in Figure 8 and combine Fig. 5, power is run more than load consumption when main frame 31,32 is minimum
During power, it may be assumed that switch board 99 collects the pressure parameter of pressure transducer 61,62,63,64,
The temperature parameter of temperature sensor 71,72,73,74 to carry out calculating main frame 31,32 minimum
Run power more than load power consumption, now, main frame 31,32 water yield more than indoor set 51,
52 amount of water requireds, the unnecessary water yield of main frame 31,32, in addition to two grades of variable frequency pumps 42 of supply, enters string
The energy-accumulating water tank 81,82 of connection carries out energy storage；Now, water (flow) direction as shown in Fig. 8 arrow dotted line,
A part of water yield enters indoor set 51,52 direction, and the unnecessary water yield is along towards energy-accumulating water tank 81,82
Direction enters in energy-accumulating water tank 81,82, stores energy in energy-accumulating water tank 81,82.Now,
Main frame 31, the 32 output water yield is equal to 51,52 water requirements of indoor set and energy-accumulating water tank 81,82 institute
Water requirement sum.
As shown in Figure 9 and combine Fig. 5, near indoor set 51,52 outlet that switch board 99 gathers
The leaving water temperature of temperature sensor 74 and the energy storage water tank temperature of temperature sensor 76 calculating temperature difference,
The energy storage water tank temperature detected when temperature sensor 76 and the temperature sensor of indoor set 51,52
The temperature difference of the leaving water temperature of 74 is at least up to the water outlet of aforementioned main frame 31,32 and backwater temperature difference 5 DEG C, this
Time, main frame 31,32 shuts down, and during shutdown, the output of main frame 31,32 is zero, frozen water or heat
Water is provided by energy-accumulating water tank 81,82, and the water in energy-accumulating water tank 81,82 is along Fig. 7 band arrow
Dotted line direction supplies confluent to indoor set 51,52；When the energy in energy-accumulating water tank 82,82 is not enough to
During supply indoor set 51,52, i.e. switch board 99 gathers and calculates temperature difference, works as temperature sensor
74 detect indoor set 51,52 leaving water temperature and the energy storage water that detects of temperature sensor 76
When case 81,82 temperature difference reaches or is less than backwater temperature difference, the most progressively start main frame 31,32 and supply
To energy, so, central air conditioner system moves in circles operation, greatly reduces main frame 31,32
On-off frequency, improves efficiency, meanwhile, saves energy consumption, has reached environment protecting.Meanwhile, exist
When main frame 31,32 is shut down, one-level variable frequency pump 41 also quits work, only two grades variable frequency pumps 42
Run, to indoor set 51,52 for confluent, decrease the use time of one-level variable frequency pump 41,
Improve the life-span of one-level variable frequency pump 41, further increase the safety of system, decrease dimension
Repair number of times, save maintenance cost.
Above example is illustrated to the present invention with 31,32 and 2 indoor sets 51,52 of 2 main frames
Central air conditioning system and method illustrate, 3 and the main frame of more than 3 and the fortune of indoor set
Row principle is similar to the above embodiments.
When heating for prior art central air conditioner system and freeze due to control inaccuracy and insensitive from
And causing the problem of energy waste, the present invention provides a kind of Δ T temperature difference to start method, does not conforms to solving this
Reason phenomenon.
According to formula Q=CM △ T:
In formula, each parameter is as follows: heat Kcal, the C=water specific heat 4.2j/kg.C that Q=unit produces
M=system water capacity KG, the △ T=temperature difference.
In a known system, the such as central air conditioner system shown in Fig. 5, system water capacity is solid
Fixed constant.The heat that main frame 31,32 produces can directly affect water temperature, according to the conversion speed of water temperature
Rate DEG C/m can decide whether to carry out loading or off-load.
Above-mentioned formula can be transformed into △ T=(unit refrigerating capacity Q indoor set power
Q)/4.19*1000KG；Central air conditioner system can become according to the temperature in the even more short time per minute
Change judgement system the need of restarting and loading.
As shown in Figures 5 to 9, such as: the power of 2 main frames 31,32 is respectively 100kw, system
Water capacity is 1000KG, presets temperature difference △ T, and e.g. 5 DEG C, above parameter inputs control in advance
Cabinet 99 internal memory stores.Switch board 99 first passes through the most higher frequency per minute by temperature
Degree sensor 71,72 gathers return pipe 92 and outlet pipe 91 temperature calculating temperature difference, respectively in temperature
When difference reaches to preset the temperature difference, then successively start main frame 31 and main frame 32 loaded energy, due to main frame
31,32 load, the temperature difference can progressively reduce, when the temperature difference less than preset the temperature difference time the most progressively to main frame 31,
32 shut down；When the temperature difference is less than when presetting the temperature difference, it may appear that unit refrigerating capacity Q is more than indoor set
The situation of power Q, now, progressively stores excess energy in energy-accumulating water tank 81,82；Control
Cabinet 99 with the temperature of above-mentioned same frequency collection temperature sensor 71,72,73,74,75,76,
The temperature computation temperature difference collected by temperature sensor 73,74, when the temperature difference is again more than presetting temperature
During difference, then basis collects thermometer from temperature sensor 71,72 and calculates the temperature difference, if this temperature difference
Less than when presetting the temperature difference, then explanation energy-accumulating water tank 81,82 there is unnecessary energy, now start storage
Can carry out supplying energy by 81,82 pairs of indoor sets 51,52 of water tank；When temperature sensor 71,72
The temperature difference reaches then to close energy-accumulating water tank 81,82 when presetting the temperature difference and the most progressively starts main frame 31,32,
So circular flow, can reach the control the sensitiveest to whole central air conditioner system.According to control
Whole system is controlled by the temperature acquisition frequency in cabinet 99, preferably solve excessive loads from
And cause energy waste, meanwhile, energy-accumulating water tank 81,82 of the present invention store energy to main frame 31,
32 are supplemented, it is to avoid the frequent starting of main frame 31,32, while saving energy, reduce
The startup of main frame 31,32 and shut down frequency, thus improve the safety of whole system, reduce
Maintenance frequency.Above it can also be seen that by the collection of multiple temperature acquisition points, improve system
The intellectuality controlled.Meanwhile, can increase according to system change such as the increases of indoor set 51,52
The quantity of temperature sensor, in order to system is carried out more precise control.
It addition, main frame 31,32 itself can carry out the loading velocity of 50%-100% or lower, example
Such as 25%-50%-75%-100%, many number systems are operated in efficient district when 60%-80%, such as,
When main frame 31 runs 100% power, an other main frame 32 starts, and such 2 main frames run
In the efficient district of 50%, energy resource consumption can be greatly reduced.
Water outlet 45 DEG C when general central air conditioner system heats, 40 DEG C of backwater；Leaving water temperature 7 DEG C during refrigeration,
12 DEG C of backwater.Switch board 99 of the present invention can receive the temperature of system regional, root with detecting real-time
According to outdoor temperature and indoor operating mode, improve during refrigeration and start water temperature, and reduce when heating and start water temperature,
Often improving 1 degree or reduce by 1 degree, main frame 31,32 efficiency improves 3%-5%；Such as, when heating,
According to outdoor temperature, indoor operating mode, leaving water temperature less than 45 degree, such as set leaving water temperature as
The energy produced when 44 DEG C-43 DEG C-42 DEG C sufficiently achieves the power of supply indoor set 51,52, then set
Leaving water temperature is 44 DEG C-43 DEG C-42 DEG C, so, then can improve the operational efficiency of main frame 31,32.
Then improving startup water temperature during refrigeration, principle is ibid.
Traditional unit startup-shutdown design temperature is positive and negative 2 DEG C, such as, heat setting return water temperature 40
When spending, start when temperature is less than 38 degree, shut down during more than 42 degree.
Central air conditioner system switch board 99 of the present invention can according to gather ambient temperature and load condition,
Correction automatic to rest temperature, when the outdoor temperature collected and the indoor temperature temperature difference are bigger, says
The power of bright indoor set to be reached 51,52 needs more energy, then system is revised automatically by 38 DEG C
Rest temperature is automatically regulated to be 37 degree DEG C lower, so reduces the start-stop ratio of main frame 31,32,
The most energy-conservation.
In above-mentioned startup method, either main frame 31,32 start supply energy or energy-accumulating water tank 81,
82 supply energy are the most applicable.
As above, the present invention provides a kind of air conditioning control method, including,
Step S1, switch board gathers main frame outlet pipe and the temperature and pressure of return pipe, and root
The running frequency of one-level variable frequency pump is controlled according to the temperature and pressure gathered；
Step S2, switch board gathers indoor set water outlet and the temperature of backwater and water outlet backwater pressure
Power, the running frequency of two grades of variable frequency pumps of ambient temperature state modulator.
Step S1 also includes step S11, when main frame is opened, switch board according to main frame water outlet and
The pressure reduction of backwater controls the running frequency of one-level variable frequency pump, gathers main frame water outlet and return water temperature simultaneously
Adjust the running frequency of one-level variable frequency pump.
Step S2 also includes step S21, and switch board is according to the indoor set water outlet collected and returns
Water pressure and temperature and ambient temperature, control the running frequency of two grades of variable frequency pumps.
Step S21 also includes step S22, and switch board is according to the main frame collected and the temperature of indoor set
With pressure and ambient temperature, control running frequency and the fortune of two grades of variable frequency pumps of one-level variable frequency pump
Line frequency；When main frame water yield is more than the indoor set amount of water required, switch board controls the unnecessary water yield and enters
Energy-accumulating water tank.
Step S21 also includes step S23, and switch board is according to the temperature and pressure of energy-accumulating water tank and room
The temperature and pressure of interior machine controls close down and start main frame.
Although the present invention of being described in detail and advantage thereof it should be appreciated that without departing from by appended
The spirit and scope of the present invention that limited of claim in the case of can carry out various change, replace
Generation and conversion.And, scope of the present application is not limited only to the process described by description, equipment, hands
Section, the specific embodiment of method and steps.One of ordinary skilled in the art is from disclosure of the invention
Content will readily appreciate that, execution can be used basic to corresponding embodiment described herein according to the present invention
Identical function or obtain the result essentially identical with it, the process that existing and future is the most to be developed,
Equipment, means, method or step.Therefore, appended claim is intended in the range of them wrap
Include such process, equipment, means, method or step.
Claims (12)
1. an air-conditioner control system, including first class control system, second control system, indoor set,
Switch board and connect the water pipe of above-mentioned first class control system, second control system and indoor set, above-mentioned
Switch board is electrically connected in first class control system, second control system and indoor set, and above-mentioned one-level controls
System includes that main frame, water pipe include outlet pipe and return pipe, it is characterised in that:
First class control system also includes the one-level variable frequency pump being positioned close to position of host machine；
Second control system includes the energy-accumulating water tank being connected with outlet pipe and return pipe two ends, and arranges
At two grades of variable frequency pumps near energy-accumulating water tank；
Water temperature according to described energy-accumulating water tank and the difference of water outlet water temperature of described indoor set, water outlet
Pipe and the temperature gap of return pipe, stop or starting described main frame, wherein,
When the difference of the water temperature of described energy-accumulating water tank and the water outlet water temperature of described indoor set is more than
When the temperature gap of described outlet pipe and return pipe, stop described main frame；
When the difference of the water temperature of described energy-accumulating water tank and the water outlet water temperature of described indoor set is less than institute
When stating the temperature gap of outlet pipe and return pipe, start described main frame.
Air-conditioner control system the most according to claim 1, it is characterised in that described outlet pipe
Arrange near position of host machine with return pipe, and be provided with on outlet pipe and return pipe pressure transducer and
Temperature sensor, first class control system includes main frame and the electrodynamic valve arranged near position of host machine.
Air-conditioner control system the most according to claim 2, it is characterised in that described switch board
It is arranged at the temperature sensor near outlet pipe and the temperature biography being arranged near return pipe for obtaining
The temperature difference of sensor sensing, and the running frequency of one-level variable frequency pump is controlled according to the temperature difference obtained.
Air-conditioner control system the most according to claim 3, it is characterised in that described energy storage water
The two ends of case are connected with outlet pipe and return pipe respectively, and the pipeline that energy-accumulating water tank is connected with return pipe sets
It is equipped with temperature sensor, energy-accumulating water tank is also provided with temperature sensor.
Air-conditioner control system the most according to claim 4, it is characterised in that described indoor set
Being respectively arranged at two ends with temperature sensor, described switch board is for gathering the temperature sensor at indoor set two ends
Temperature, the temperature of temperature sensor that the pipeline that is connected with return pipe of energy-accumulating water tank is arranged and storage
Energy water tank temperature, and the running frequency of two grades of variable frequency pumps is controlled according to the temperature difference.
Air-conditioner control system the most according to claim 5, it is characterised in that described indoor set
Two ends be also equipped with pressure transducer.
7. according to the air-conditioner control system described in any one of claim 1-6, it is characterised in that institute
Stating energy-accumulating water tank is V-type spout energy-accumulating water tank.
8. for an air conditioning control method for air-conditioner control system described in any one of claim 1-7,
It is characterized in that:
Step S1: gather main frame outlet pipe and the temperature and pressure of return pipe by switch board,
Control the running frequency of one-level variable frequency pump；
Gather the water temperature of energy-accumulating water tank, the water outlet water temperature of indoor set, main frame outlet pipe and return
The water temperature of water pipe, controls main frame and stops or running；
Step S2: switch board gathers indoor set water outlet and the temperature of backwater and water outlet backwater pressure
Power, the running frequency of two grades of variable frequency pumps of ambient temperature state modulator.
Air conditioning control method the most according to claim 8, it is characterised in that described step S1
Also include:
Step S11: when main frame is opened, switch board controls according to the pressure reduction of main frame water outlet and backwater
The running frequency of one-level variable frequency pump, and gather main frame water outlet and return water temperature, according to water outlet with return
The temperature difference of water adjusts the running frequency of one-level variable frequency pump.
Air conditioning control method the most according to claim 9, it is characterised in that described step
S2 also includes:
Step S21: switch board according to the indoor set water outlet collected and pressure of return water and temperature with
And ambient temperature, control the running frequency of two grades of variable frequency pumps.
11. air conditioning control methods according to claim 10, it is characterised in that described step
S21 also includes:
Step S22: switch board is according to the main frame collected and the temperature and pressure of indoor set and environment
Temperature, controls one-level variable frequency pump and the running frequency of two grades of variable frequency pumps；When main frame water yield is more than
During the indoor set amount of water required, switch board controls the unnecessary water yield and enters energy-accumulating water tank.
12. air conditioning control methods according to claim 10, it is characterised in that described step
S21 also includes:
Step S23: switch board according to the temperature and pressure of energy-accumulating water tank and the temperature of indoor set and
Stress control is closed down and starts main frame.
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| CN104676752B (en) * | 2014-11-03 | 2017-08-04 | 广东工业大学 | Analysis method of energy consumption in central air conditioning system with water-cooled chiller as cold source |
| CN107350895B (en) * | 2017-09-04 | 2021-03-23 | 珠海格力电器股份有限公司 | Load control method, device and system for machine tool cooler |
| TWI668542B (en) * | 2018-09-26 | 2019-08-11 | 綠潔能科技股份有限公司 | Intelligent cooling and heating control method and controller |
| CN111077799B (en) * | 2019-12-11 | 2021-06-15 | 珠海格力电器股份有限公司 | Air conditioner water pump simulation method and system |
| CN115704583A (en) * | 2021-08-10 | 2023-02-17 | 江苏远视环境科技有限公司 | Secondary pump full-variable-frequency variable-flow machine room and control method thereof |
| CN113819581B (en) * | 2021-08-23 | 2022-11-18 | 广西电网有限责任公司电力科学研究院 | Summer air conditioner load capacity and air temperature sensitivity analysis method |
| CN118391755A (en) * | 2024-05-24 | 2024-07-26 | 斯坦德技术工程(青岛)有限公司 | A clean room energy-saving variable flow cold and heat source system and control method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07269911A (en) * | 1994-03-30 | 1995-10-20 | Hitachi Ltd | Ice heat storage type heat source device and freeze prevention control method thereof |
| JP2001182971A (en) * | 1999-12-24 | 2001-07-06 | Hitachi Ltd | Air conditioning system and control method thereof |
| CN1554904A (en) * | 2003-12-22 | 2004-12-15 | P甲海 | Multiple circulation high efficiency full automatic water cooling central air conditioner system |
| CN1629556A (en) * | 2003-12-19 | 2005-06-22 | 珠海福士得冷气工程有限公司 | Energy-saving central air conditioning system |
| CN2706704Y (en) * | 2003-12-19 | 2005-06-29 | 珠海福士得冷气工程有限公司 | Energy-saving central air conditioning device |
| CN201344597Y (en) * | 2008-12-19 | 2009-11-11 | 赵辉 | Energy storage air-conditioning system |
| CN203286717U (en) * | 2013-06-07 | 2013-11-13 | 昆山市远视商用空调工程有限公司 | Air conditioner control system |
-
2013
- 2013-06-07 CN CN201310226546.4A patent/CN103307711B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07269911A (en) * | 1994-03-30 | 1995-10-20 | Hitachi Ltd | Ice heat storage type heat source device and freeze prevention control method thereof |
| JP2001182971A (en) * | 1999-12-24 | 2001-07-06 | Hitachi Ltd | Air conditioning system and control method thereof |
| CN1629556A (en) * | 2003-12-19 | 2005-06-22 | 珠海福士得冷气工程有限公司 | Energy-saving central air conditioning system |
| CN2706704Y (en) * | 2003-12-19 | 2005-06-29 | 珠海福士得冷气工程有限公司 | Energy-saving central air conditioning device |
| CN1554904A (en) * | 2003-12-22 | 2004-12-15 | P甲海 | Multiple circulation high efficiency full automatic water cooling central air conditioner system |
| CN201344597Y (en) * | 2008-12-19 | 2009-11-11 | 赵辉 | Energy storage air-conditioning system |
| CN203286717U (en) * | 2013-06-07 | 2013-11-13 | 昆山市远视商用空调工程有限公司 | Air conditioner control system |
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