CN107062482A - A kind of air-conditioning system and its control method - Google Patents
A kind of air-conditioning system and its control method Download PDFInfo
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- CN107062482A CN107062482A CN201710253728.9A CN201710253728A CN107062482A CN 107062482 A CN107062482 A CN 107062482A CN 201710253728 A CN201710253728 A CN 201710253728A CN 107062482 A CN107062482 A CN 107062482A
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- host computer
- refrigeration host
- air
- temperature
- storage container
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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
- F24F5/0017—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 using cold storage bodies, e.g. ice
- F24F5/0021—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 using cold storage bodies, e.g. ice using phase change material [PCM] for storage
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air-conditioning system, including air-conditioning cooling end, the first refrigeration host computer, the second refrigeration host computer, water storage container and heat exchanger；Wherein, connected between air-conditioning cooling end and the first refrigeration host computer by the first watering cycle pipeline, the second watering cycle pipeline is additionally provided with air-conditioning cooling end；Second refrigeration host computer is connected by the 3rd watering cycle pipeline with water storage container, and the 4th watering cycle pipeline is additionally provided with water storage container；Heat exchanger is connected between the second watering cycle pipeline and the 4th watering cycle pipeline.The invention also discloses a kind of control method of air-conditioning system.By setting heat exchanger, realize that air-conditioning cooling end and water storage container are completely isolated, the water at air-conditioning cooling end is avoided to leak into water storage container, it ensure that the safe and stable operation of air-conditioning system, refrigeration is given full play to, refrigeration is improved, the operation of air-conditioning system is optimized, reduces use cost.
Description
Technical field
The present invention relates to water cool-storage technology technical field, more particularly to a kind of air-conditioning system and its control method.
Background technology
With continuing to develop for urbanization process, increasing data center, office building, market, institutional settings, amusement
The palaces such as place, hospital, hotel are constantly rised sheer from level ground, and central air conditioner system is that these palaces must
Indispensable visual plant facility.The electric load " weight night in daytime is light " of central air conditioner system, " strives peak to allow with the other loads of power network
Paddy " is the principal element for causing power network peak load difference.To ensure the safe, reasonable of power network and economically running, user is encouraged
Electric load is called, is realized " peak load shifting ", country carries out Peak-valley TOU power price.
Technology of Cold Storage Air Conditions is that the one kind being applied under Peak-valley TOU power price system calls electric load technology.Cold is stored
In certain medium or material, the system referred to as energy-storage system discharged in another period；When cold is with sensible heat or latent heat shape
Formula is stored in certain medium, and is capable of the air-conditioning system of released cold quantity when needed and is referred to as chilling air conditioning system, abbreviation cold-storage
System；By ice making mode, cold is stored with latent heat of phase change, and ice-melt when needed discharges the air-conditioning system referred to as ice of cold
Chilling air conditioning system, abbreviation ice-storage system；The system for storing cold using the sensible heat of water is referred to as chilled water storage system.Cool storage medium
Generally there are water, ice and salt eutectic phase-change material etc..
Cold accumulation system is general to be made up of refrigeration, cold-storage and cold supply system.Refrigeration, cold accumulation system are by refrigeration host computer, cold-storage
Equipment, auxiliary equipment, control to adjust the part of equipment four and pass through pipeline and wire (including pilot and power cable etc.) connection
Composition.Conventional water cool-storage technology technology, in cold-storage, the method closed using valve is by air conditioning terminal or air-conditioning cooling end
Water is isolated with water storage container, is not closed completely reality if there is because of valve, water storage container can be leaked into by making the water of air conditioning terminal, warp
Water storage container leaks, and causes air-conditioning system to be not normally functioning.
The content of the invention
It is an object of the invention to overcome defect of the prior art, there is provided a kind of air-conditioning system for running safety and its control
Method processed.
Technical solution of the present invention provides a kind of air-conditioning system, including air-conditioning cooling end, the first refrigeration host computer, the second refrigeration master
Machine, water storage container and heat exchanger；
Wherein, connected between the air-conditioning cooling end and first refrigeration host computer by the first watering cycle pipeline, institute
State and the second watering cycle pipeline is additionally provided with air-conditioning cooling end；
Second refrigeration host computer between the 3rd watering cycle pipeline and the water storage container by connecting, and the retaining is held
The 4th watering cycle pipeline is additionally provided with device；
The heat exchanger is connected between the second watering cycle pipeline and the 4th watering cycle pipeline.
Further, it is also associated with the 5th watering cycle pipeline between second refrigeration host computer and the heat exchanger.
Further, also include control unit, described control unit respectively with first refrigeration host computer and described
Two refrigeration host computer signals are connected, the switch for controlling first refrigeration host computer and second refrigeration host computer.
Further, computing unit and comparison judgment unit are also included；
The computing unit connects with the air-conditioning cooling end, first refrigeration host computer and the water storage container signal respectively
Connect, the cooling load R for calculating air-conditioning cooling load R required for air-conditioning cooling end, water storage container1, in water storage container
Cold storage capacity R2With the cooling load R of the first refrigeration host computer3；
The comparison judgment unit is connected with the computing unit and described control unit signal respectively, for compare R with
R1, R and R1+R2, and comparative result is exported to described control unit, described control unit is according to by the comparison judgment unit
The comparative result transmitted controls the switch of first refrigeration host computer and second refrigeration host computer.
Further, the first temperature acquiring unit is also included；
First temperature acquiring unit is connected with described control unit signal, for obtaining the reality in the water storage container
Border temperature T1, and the temperature results of acquisition are delivered to described control unit, described control unit is according to by first temperature
The temperature results that acquiring unit is transmitted control the switch of second refrigeration host computer.
Further, the first temperature comparing unit is also included；
If the cold-storage target water temperature of water storage container is T2, the second refrigeration host computer opening temperature be T3, second refrigeration host computer
Shutdown temperature is TX；
The first temperature comparing unit is connected with first temperature acquiring unit and described control unit signal respectively,
For comparing T1With T2+T3And T1With T2+TX, and comparative result is exported to described control unit, described control unit according to by
The comparative result that the first temperature comparing unit is transmitted controls the switch of second refrigeration host computer.
Further, second temperature acquiring unit is also included；
The second temperature acquiring unit is connected with described control unit signal, the reality for obtaining the air-conditioning cooling end
Border cooling temperature T4, and the temperature results of acquisition are delivered to described control unit, described control unit is according to by described second
The temperature results that temperature acquiring unit is transmitted control the switch of first refrigeration host computer.
Further, second temperature comparing unit is also included；
If the cooling target water temperature at air-conditioning cooling end is T5, the first refrigeration host computer opening temperature be T6, the first refrigeration host computer
Shutdown temperature be TY；
The second temperature comparing unit is connected with the second temperature acquiring unit and described control unit signal respectively,
For comparing T4With T5+T6And T4With T5+TY, and comparative result is exported to described control unit, described control unit according to by
The comparative result that the second temperature comparing unit is transmitted controls the switch of first refrigeration host computer.
Further, electricity consumption period judging unit is also included；
The electricity consumption period judging unit is connected with described control unit signal, for judging that the current power time is in use
Electric peak period, with the specific period in level peak period and low power consumption period, and will determine that result is exported to the control
Unit, described control unit controls first refrigeration host computer according to the judged result transmitted by the electricity consumption period judging unit
With second refrigeration host computer switch.
Technical solution of the present invention also provides a kind of control method of air-conditioning system, comprises the following steps：
Water storage container cold-storage：
Second refrigeration host computer is opened carries out cold-storage to the water in water storage container；
Water storage container is let cool：
Cold water in water storage container enters in heat exchanger through the 4th watering cycle pipeline, and with the second watering cycle pipeline
In hot water carry out heat exchange, the cold water of acquisition is delivered to air-conditioning cooling end by the second watering cycle pipeline；
First refrigeration host computer supplying cold directly：
Open the first cooling main frame and supply cold water to air-conditioning cooling end.
Further, also comprise the following steps, the second refrigeration host computer supplying cold directly：
Open the second cooling main frame and supply cold water to the 5th watering cycle pipeline, and followed by heat exchanger with the second water supply
Hot water in endless tube road carries out heat exchange, and the cold water of acquisition is delivered to air-conditioning cooling end by the second watering cycle pipeline.
Further, also comprise the following steps, while water storage container cold-storage, also directly supplied by the second refrigeration host computer
It is cold.
Further, also comprise the following steps, while water storage container is let cool, also directly supplied by the second refrigeration host computer
It is cold.
Further, also comprise the following steps, the first refrigeration host computer and the second refrigeration host computer are combined to the confession of air-conditioning cooling end
It is cold.
Further, such as electricity consumption period judging unit judges that the current power time was in the low power consumption period, then passes through
Control unit opens the second refrigeration host computer cold-storage into water storage container；
Such as during water storage container cold-storage, comparison judgment unit compares acquisition R ＜ R1, R2＞ 0, then open retaining and hold
Device is let cool.
Further, as electricity consumption period judging unit judges that the current power time is in the peak of power consumption period or uses level peak
In period, and comparison judgment unit compares acquisition R ＜ R1, R2＞ 0, then individually open water storage container and let cool.
Further, as electricity consumption period judging unit judges that the current power time is in the peak of power consumption period or uses level peak
In period, and comparison judgment unit compares acquisition R1+R3＞ R ＞ R1, R2＞ 0, then while unlatching water storage container is let cool, also
Pass through the first refrigeration host computer supplying cold directly.
Further, as electricity consumption period judging unit judges that the current power time is in the peak of power consumption period or uses level peak
In period, and comparison judgment unit compares acquisition R ＞ R1+R3, R2＞ 0, then while unlatching water storage container is let cool, also pass through
First refrigeration host computer and the second refrigeration host computer air conditioning.
Further, as electricity consumption period judging unit judges that the current power time is in the peak of power consumption period or uses level peak
In period, and comparison judgment unit compares acquisition R ＜ R3, R2=0, then directly pass through the first refrigeration host computer cooling.
Further, as electricity consumption period judging unit judges that the current power time is in the peak of power consumption period or uses level peak
In period, and comparison judgment unit compares acquisition R ＞ R3, R2=0, then combined by the first refrigeration host computer and the second refrigeration host computer
Cooling.
Further, such as electricity consumption period judging unit judges that the current power time was in the low power consumption period, and control is single
The actual temperature T that member is obtained from the first temperature acquiring unit1Higher than preset temperature, then open the second refrigeration host computer and hold to retaining
Cold-storage in device.
Further, in arbitrary period, the actual cooling temperature that such as control unit is obtained from second temperature acquiring unit
Spend T4Higher than preset temperature, then the first refrigeration host computer supplying cold directly is opened.
Using above-mentioned technical proposal, have the advantages that：
By setting heat exchanger, realize that air-conditioning cooling end and water storage container are completely isolated, it is to avoid the water at air-conditioning cooling end
Leak into water storage container, it is ensured that the safe and stable operation of air-conditioning system.
And cold-storage, cooling multiple combinations mode can be realized, and refrigeration has been given full play to, refrigeration is improved, it is full
The need for foot is different.
By using electricity in off-peak hours, the operation of air-conditioning system is optimized, use cost is reduced.
Brief description of the drawings
The schematic diagram for the air-conditioning system that Fig. 1 provides for one embodiment of the invention；
Fig. 2 is control unit and the first refrigeration host computer and the second refrigeration host computer signal connection diagram；
Fig. 3 is computing unit, comparison judgment unit and control unit signal connection diagram；
Fig. 4 is the first temperature acquiring unit, the first temperature comparing unit and control unit signal connection diagram；
Fig. 5 is second temperature acquiring unit, second temperature comparing unit and control unit signal connection diagram；
Fig. 6 is electricity consumption period judging unit and control unit signal connection diagram.
The reference table of comparisons：
1- air-conditioning coolings end；The refrigeration host computers of 2- first；The refrigeration host computers of 3- second；
4- water storage containers；5- heat exchangers；6- the first watering cycle pipelines；
7- the second watering cycle pipelines；The watering cycle pipelines of 8- the 3rd；The watering cycle pipelines of 9- the 4th；
The watering cycle pipelines of 10- the 5th；11- control units；12- computing units；
13- comparison judgment units；The temperature acquiring units of 14- first；15- the first temperature comparing units；
16- second temperature acquiring units；17- second temperature comparing units；
18- electricity consumption period judging units.
Embodiment
Below in conjunction with the accompanying drawings come further illustrate the present invention embodiment.Wherein identical parts identical
Reference is represented.It should be noted that the word "front", "rear", "left", "right", the "up" and "down" that are used below in description
The direction in accompanying drawing is referred to, word " interior " and " outer " are referred respectively to towards or away from the direction of particular elements geometric center.
As shown in figure 1, one embodiment of the invention provide air-conditioning system, including air-conditioning cooling end 1, the first refrigeration host computer 2,
Second refrigeration host computer 3, water storage container 4 and heat exchanger 5.
Wherein, connected between the refrigeration host computer 2 of air-conditioning cooling end 1 and first by the first watering cycle pipeline 6, air-conditioning cooling
The second watering cycle pipeline 7 is additionally provided with end 1.
Second refrigeration host computer 3 is connected by the 3rd watering cycle pipeline 8 with water storage container 4, is additionally provided with water storage container 4
4th watering cycle pipeline 9；
Heat exchanger 5 is connected between the second watering cycle pipeline 7 and the 4th watering cycle pipeline 9.
Air-conditioning cooling end 1 in the present invention is the end of the outside cooling of air-conditioning, also referred to as air conditioning terminal or user terminal.
Water storage container 4 in the present invention can be catch basin or water tank.
Watering cycle pipeline in the present invention refers to be used to supply water, and water can in the pipeline circulation pipe
Road.
The air-conditioning system that the present invention is provided, can be realized as needed：The cold-storage of water storage container 4 is used in low power consumption,
In peak of power consumption, let cool using water storage container 4, power cost saving.
The air-conditioning system that the present invention is provided, due to leading between the second watering cycle pipeline 7 and the 4th watering cycle pipeline 9
Over-heat-exchanger 5 carries out heat exchange, so as to realize that air-conditioning cooling end and water storage container are completely isolated, it is to avoid air-conditioning cooling end
Water is leaked into water storage container, it is ensured that the safe and stable operation of air-conditioning system.
The air-conditioning system that the present invention is provided can provide several working ways, meet different demands, specific as follows：
Water storage container cold-storage；The independent cooling of first refrigeration host computer；Water storage container is let cool；Water storage container lets cool the+the first refrigeration
Main frame cooling etc., it is possible to achieve variation combination, is operated according to the real needs of user, reaches power saving and effectively freeze
Effect.
Wherein, in 4 cold-storage of water storage container：
Second refrigeration host computer 3 is opened, by the 3rd watering cycle pipeline 8 and the water pump above it in water storage container 4
Water carries out circularly cooling, and then obtained cold water is transmitted back in water storage container 4 by the 3rd watering cycle pipeline 8 and is stored
It is cold.
When water storage container 4 is let cool：
Cold water in water storage container 4 enters in heat exchanger 5 through the 4th watering cycle pipeline 9, and with the second watering cycle
Hot water in pipeline 7 carries out heat exchange, and the cold water of acquisition is delivered in air-conditioning cooling end 1 by the second watering cycle pipeline 7
Row cooling.
In the first 2 supplying cold directly of refrigeration host computer：
The first cooling main frame 2 is opened, cold water is supplied to air-conditioning cooling end by the first watering cycle pipeline 6.
It is preferred that as shown in figure 1, being also associated with the 5th watering cycle pipeline between the second refrigeration host computer 3 and heat exchanger 5
10, so it can be achieved：
Water storage container cold-storage the+the second refrigeration host computer cooling；Water storage container lets cool the+the second refrigeration host computer cooling；First refrigeration
Main frame cooling the+the second refrigeration host computer cooling；Water storage container lets cool+the first refrigeration host computer cooling the+the second refrigeration host computer cooling, enriches
Cooling scheme, meets the diversified demand of client, and realize power saving effect.
In the second 3 supplying cold directly of refrigeration host computer：
The second cooling main frame 3 is opened, cold water is supplied to the 5th watering cycle pipeline 10, and pass through heat exchanger 5 and second
Hot water in watering cycle pipeline 7 carries out heat exchange, and the cold water of acquisition is delivered to air-conditioning cooling by the second watering cycle pipeline 7
End 1 carries out cooling.
It is preferred that as shown in Fig. 2 the air-conditioning system that the present invention is provided also includes control unit 11,11 points of control unit
It is not connected with the first refrigeration host computer 2 and the signal of the second refrigeration host computer 3, for controlling the first refrigeration host computer 2 and the second refrigeration host computer 3
Switch.
The signal connection mentioned in the present invention can be wireless signal connection, can also carry out circuit connection by wire.
The switch of the first refrigeration host computer 2 and the second refrigeration host computer 3 is automatically controlled by control unit 11, convenient control is real
The Automated condtrol of whole system is showed.
It is preferred that as shown in figure 3, the air-conditioning system that the present invention is provided also includes computing unit 12 and comparison judgment unit
13；
Computing unit 12 is connected with air-conditioning cooling end 1, the first refrigeration host computer 2 and the signal of water storage container 4 respectively, for calculating
Air-conditioning cooling load R, the cooling load R of water storage container 4 gone out required for air-conditioning cooling end 11, cold storage capacity R in water storage container 42
With the cooling load R of the first refrigeration host computer 23。
Comparison judgment unit 13 is connected with computing unit 12 and the signal of control unit 11 respectively, for comparing R and R1、R2、R3
And R and R1+R3, and comparative result is exported to control unit 11, control unit 11 is according to the ratio transmitted by comparison judgment unit 13
Compared with output control the first refrigeration host computer 2 and the switch of the second refrigeration host computer 3.
For example, in the peak of power consumption period or with the level peak period：
Comparison judgment unit 13 compares acquisition R ＜ R1, R2＞ 0, then let cool only with water storage container 4.Control unit 11 can be with
It is connected with the control valve signal on water storage container 4, realizes that water storage container 4 is automatic by opening the control valve on water storage container 4
Let cool.
As comparison judgment unit 13 compares acquisition R1+R3＞ R ＞ R1, R2＞ 0, then open water storage container 4 let cool it is same
When, also pass through the supplying cold directly of the first refrigeration host computer 2.
As comparison judgment unit compares acquisition R ＞ R1+R3, R2＞ 0, then while unlatching water storage container 4 is let cool, also lead to
Cross the first refrigeration host computer 2 and the air conditioning of the second refrigeration host computer 3.
As comparison judgment unit 13 compares acquisition R ＜ R3, R2=0, then directly pass through the cooling of the first refrigeration host computer 2.
As comparison judgment unit 13 compares acquisition R ＞ R3, R2=0, then pass through the first refrigeration host computer 2 and the second refrigeration host computer 3
Air conditioning.
It is preferred that as shown in figure 4, the air-conditioning system that the present invention is provided also includes the first temperature acquiring unit 14.
First temperature acquiring unit 14 is connected with the signal of control unit 11, for obtaining the actual temperature in water storage container 4
T1, and the temperature results of acquisition are delivered to control unit 11, control unit 11 is transmitted according to by the first temperature acquiring unit 14
Temperature results control the second refrigeration host computer 3 switch.
A preset temperature T can be set to control unit 110, such as 4 DEG C.When within the low power consumption period, when retaining is held
Actual temperature T in device 41During 4 DEG C of ＞, then control unit 11 directly opens the second refrigeration host computer 3 and carries out cold-storage, realizes automation
Operation.As the actual temperature T in water storage container 41At≤4 DEG C, then control unit 11 remains turned-off the second refrigeration host computer 3, saves
Electricity consumption.
It is preferred that as shown in figure 4, the air-conditioning system that the present invention is provided also includes the first temperature comparing unit 15.
If the cold-storage target water temperature of water storage container 4 is T2, the second refrigeration host computer 3 opening temperature be T3, the second refrigeration host computer
3 shutdown temperature is TX。
First temperature comparing unit 15 is connected with the first temperature acquiring unit 14 and the signal of control unit 11 respectively, for than
Compared with T1With T2+T3And T1With T2+TX, and comparative result is exported to control unit 11, control unit 11 is according to by the first temperature ratio
Compared with the switch that the comparative result that unit 15 is transmitted controls the second refrigeration host computer 3.
The cold-storage target water temperature T of water storage container 42, the second refrigeration host computer 3 opening temperature T3With stopping for the second refrigeration host computer 3
Machine temperature is TXIt can set as needed.
In order to obtain temperature, temperature sensor can be set in water storage container 4.
In the low power consumption period, such as comparative result of the first temperature comparing unit 15 is T1＞ T2+T3, then second is opened
Refrigeration host computer 3 carries out cold-storage to water storage container 4；Comparative result such as the first temperature comparing unit 15 is T1≤T2+TX, then second
Refrigeration host computer 3 is closed, and stops cold-storage.
It is preferred that as shown in figure 5, the air-conditioning system that the present invention is provided also includes second temperature acquiring unit 16.
Second temperature acquiring unit 16 is connected with the signal of control unit 11, the actual cooling for obtaining air-conditioning cooling end 1
Temperature T4, and the temperature results of acquisition are delivered to control unit 11, control unit 11 is according to by second temperature acquiring unit 16
The temperature results transmitted control the switch of the first refrigeration host computer 2.
It is preferred that as shown in figure 5, the air-conditioning system that the present invention is provided also includes second temperature comparing unit 17；
If the cooling target water temperature at air-conditioning cooling end 1 is T5, the first refrigeration host computer opening temperature be T6, first refrigeration master
The shutdown temperature of machine is TY。
Second temperature comparing unit 17 is connected with second temperature acquiring unit 16 and the signal of control unit 11 respectively, for than
Compared with T4With T5+T6And T4With T5+TY, and comparative result is exported to control unit 11, control unit 11 is according to by second temperature ratio
Compared with the switch that the comparative result that unit 17 is transmitted controls the first refrigeration host computer 2.
The cold-storage target water temperature T at air-conditioning cooling end 15, the first refrigeration host computer 2 opening temperature T6With the first refrigeration host computer
Shutdown temperature TYIt can set as needed.
In order to obtain temperature, temperature sensor can be set in air-conditioning cooling end 1.
Comparative result such as second temperature comparing unit 17 is T4＞ T5+T6, then the first refrigeration host computer 2 is opened directly to sky
Cooling end 1 is adjusted, air conditioner refrigeration effect is improved；Comparative result such as second temperature comparing unit 17 is T4≤T5+TY, then first make
Cold main frame 2 is stopped.
It is preferred that as shown in fig. 6, the air-conditioning system that the present invention is provided also includes electricity consumption period judging unit 18.
Electricity consumption period judging unit 18 is connected with the signal of control unit 11, for judging that it is high that the current power time is in electricity consumption
The peak period, with the specific period in level peak period and low power consumption period, and will determine that result is exported to control unit 11, control
Unit 11 processed controls the first refrigeration host computer 2 and the second refrigeration host computer according to the judged result transmitted by electricity consumption period judging unit 18
3 switches.
For example, as electricity consumption period judging unit 18 judges that the current power time within the low power consumption period, then preferentially opens
Open the second refrigeration host computer 3 and carry out cold-storage, now electricity price is minimum, save the electricity charge.
As electricity consumption period judging unit 18 judges the current power time in the peak of power consumption period or with the level peak period,
Then preferentially individually let cool using water storage container 4, now electricity price highest, power cost saving.
The peak of power consumption period, can be from local power supply administration with the specific period of level peak period and low power consumption period
Obtain.
Such as a kind of division methods, 8 hours (10 peak of power consumption period:00—15:00；18:00—21:00)；Use level
8 hours (7 peak period:00—10:00；15:00—18:00；21:00—23:00)；8 hours (23 low power consumption period:00—
Next day 7:00).Other division methods are also had according to season, area.
The air-conditioning system that the present invention is provided can include time delay module unit, when control unit 11 needs to open the first system
When cold main frame 2 or the second refrigeration host computer 3, delay 20s or the scheduled time are then turned on, and play a protective role.
As shown in figure 1, the control method for the air-conditioning system that one embodiment of the invention is provided, comprises the following steps：
The cold-storage of water storage container 4：
Second refrigeration host computer 3 is opened carries out cold-storage to the water in water storage container 4.
Water storage container 4 is let cool：
Cold water in water storage container 4 enters in heat exchanger 5 through the 4th watering cycle pipeline 9, and with the second watering cycle
Hot water in pipeline 7 carries out heat exchange, and the cold water of acquisition is delivered to air-conditioning cooling end 1 by the second watering cycle pipeline 7.
The supplying cold directly of first refrigeration host computer 2：
Open the first cooling main frame 2 and supply cold water to air-conditioning cooling end 1.
Specifically, in 4 cold-storage of water storage container：
Second refrigeration host computer 3 is opened, by the 3rd watering cycle pipeline 8 and the water pump above it in water storage container 4
Water carries out circularly cooling, and then obtained cold water is transmitted back in water storage container 4 by the 3rd watering cycle pipeline 8 and is stored
It is cold.
When water storage container 4 is let cool：
Cold water in water storage container 4 enters in heat exchanger 5 through the 4th watering cycle pipeline 9, and with the second watering cycle
Hot water in pipeline 7 carries out heat exchange, and the cold water of acquisition is delivered in air-conditioning cooling end 1 by the second watering cycle pipeline 7
Row cooling.
In the first 2 supplying cold directly of refrigeration host computer：
The first cooling main frame 2 is opened, cold water is supplied to air-conditioning cooling end by the first watering cycle pipeline 6.
The control method for the air-conditioning system that the present invention is provided, due in the second watering cycle pipeline 7 and the 4th watering cycle
Heat exchange is carried out by heat exchanger 5 between pipeline 9, so as to realize that air-conditioning cooling end and water storage container are completely isolated, it is to avoid
The water at air-conditioning cooling end is leaked into water storage container, it is ensured that air-conditioning system safe and stable operation.
It is preferred that as shown in figure 1, the control method for the air-conditioning system that the present invention is provided also comprises the following steps, second makes
The cold supplying cold directly of main frame 3.
Open the second cooling main frame 3 and supply cold water to the 5th watering cycle pipeline 10, and supplied by heat exchanger 5 and second
Hot water in water circulation pipe 7 carries out heat exchange, and the cold water of acquisition is delivered to air-conditioning cooling end by the second watering cycle pipeline 7
1。
It is preferred that the control method for the air-conditioning system that the present invention is provided also comprises the following steps, in the cold-storage of water storage container 4
Meanwhile, also by the supplying cold directly of the second refrigeration host computer 3, realize the scheme of water storage container cold-storage the+the second refrigeration host computer cooling.
It is preferred that the control method for the air-conditioning system that the present invention is provided also comprises the following steps, let cool in water storage container 4
Meanwhile, also by the supplying cold directly of the second refrigeration host computer 3, realize that water storage container lets cool the air conditioning of the+the second refrigeration host computer cooling
Scheme.
It is preferred that the control method of air-conditioning system that the present invention is provided also comprises the following steps, the first refrigeration host computer 2 and the
Two refrigeration host computers 3 are combined to air-conditioning cooling end cooling, realize the scheme of the first refrigeration host computer and the second refrigeration host computer air conditioning.
Specifically, the control method for the air-conditioning system that this present invention is provided, it is possible to achieve following cold-storage, let cool scheme：
Water storage container cold-storage；The independent cooling of first refrigeration host computer；Water storage container is let cool；Water storage container lets cool the+the first refrigeration
Main frame cooling；Water storage container cold-storage the+the second refrigeration host computer cooling；Water storage container lets cool the+the second refrigeration host computer cooling；First refrigeration
Main frame cooling the+the second refrigeration host computer cooling；Water storage container lets cool+the first refrigeration host computer cooling the+the second refrigeration host computer cooling.
It is preferred that such as electricity consumption period judging unit 18 judges that the current power time was in the low power consumption period, then pass through
Control unit 11 opens the second refrigeration host computer 3 cold-storage into water storage container 4, and now electricity price is minimum, power cost saving.
Such as during the cold-storage of water storage container 4, comparison judgment unit 13 compares acquisition R ＜ R1, R2＞ 0, then open retaining
Container 4 is let cool, and prior applicability water storage container is let cool, power cost saving.
It is preferred that as electricity consumption period judging unit 18 judges that the current power time is in the peak of power consumption period or uses level peak
In period, and comparison judgment unit 13 compares acquisition R ＜ R1, R2＞ 0, then individually open water storage container 4 and let cool, preferential using storage
Water receptacle is let cool, power cost saving.
It is preferred that as electricity consumption period judging unit 18 judges that the current power time is in the peak of power consumption period or uses level peak
In period, and comparison judgment unit 13 compares acquisition R1+R3＞ R ＞ R1, R2＞ 0, then while unlatching water storage container 4 is let cool,
Also by the supplying cold directly of the first refrigeration host computer 2, refrigeration is improved, and being capable of power cost saving.
It is preferred that as electricity consumption period judging unit 18 judges that the current power time is in the peak of power consumption period or uses level peak
In period, and comparison judgment unit 13 compares acquisition R ＞ R1+R3, R2＞ 0, then while unlatching water storage container 4 is let cool, also lead to
The first refrigeration host computer 2 and the air conditioning of the second refrigeration host computer 3 are crossed, refrigeration is improved, and being capable of power cost saving.
It is preferred that as electricity consumption period judging unit 18 judges that the current power time is in the peak of power consumption period or uses level peak
In period, and comparison judgment unit 13 compares acquisition R ＜ R3, R2=0, then directly by the cooling of the first refrigeration host computer 2, meet and supply
Cold demand.
It is preferred that as electricity consumption period judging unit 18 judges that the current power time is in the peak of power consumption period or uses level peak
In period, and comparison judgment unit 13 compares acquisition R ＞ R3, R2=0, then pass through the first refrigeration host computer 2 and the second refrigeration host computer 3
Air conditioning, meets cooling needs.
It is preferred that such as electricity consumption period judging unit 18 judges that the current power time was in the low power consumption period, control is single
The actual temperature T that member 11 is obtained from the first temperature acquiring unit 141Higher than preset temperature, then open the second refrigeration host computer 3 to
Cold-storage in water storage container 4, realizes Automated condtrol.
It is preferred that in arbitrary period, the actual cooling that such as control unit 11 is obtained from second temperature acquiring unit 16
Temperature T4Higher than preset temperature, then the supplying cold directly of the first refrigeration host computer 2 is opened, cooling needs are met.
In summary, the present invention provides air-conditioning system and its control method, by setting heat exchanger, realizes air-conditioning cooling
End is completely isolated with water storage container, it is to avoid the water at air-conditioning cooling end is leaked into water storage container, it is ensured that the safety of air-conditioning system is steady
Fixed operation.And cold-storage, cooling multiple combinations mode can be realized, refrigeration has been given full play to, refrigeration is improved, met
The need for different.By using electricity in off-peak hours, the operation of air-conditioning system is optimized, use cost is reduced.
As needed, above-mentioned each technical scheme can be combined, to reach best-of-breed technology effect.
Above-described is only the principle and preferred embodiment of the present invention.It should be pointed out that for the common skill of this area
For art personnel, on the basis of the principle of the invention, some other modifications can also be made, the protection model of the present invention is also should be regarded as
Enclose.
Claims (22)
1. a kind of air-conditioning system, it is characterised in that hold including air-conditioning cooling end, the first refrigeration host computer, the second refrigeration host computer, retaining
Device and heat exchanger；
Wherein, connected between the air-conditioning cooling end and first refrigeration host computer by the first watering cycle pipeline, the sky
Adjust and be additionally provided with the second watering cycle pipeline on cooling end；
Second refrigeration host computer is connected by the 3rd watering cycle pipeline with the water storage container, is also set on the water storage container
It is equipped with the 4th watering cycle pipeline；
The heat exchanger is connected between the second watering cycle pipeline and the 4th watering cycle pipeline.
2. air-conditioning system according to claim 1, it is characterised in that second refrigeration host computer and the heat exchanger it
Between be also associated with the 5th watering cycle pipeline.
3. air-conditioning system according to claim 2, it is characterised in that also include control unit, described control unit point
It is not connected with first refrigeration host computer and the second refrigeration host computer signal, for controlling first refrigeration host computer and described
The switch of second refrigeration host computer.
4. air-conditioning system according to claim 3, it is characterised in that also include computing unit and comparison judgment unit；
The computing unit is connected with the air-conditioning cooling end, first refrigeration host computer and the water storage container signal respectively,
Cooling load R for calculating air-conditioning cooling load R required for air-conditioning cooling end, water storage container1, storage in water storage container
Cold R2With the cooling load R of the first refrigeration host computer3；
The comparison judgment unit is connected with the computing unit and described control unit signal respectively, for comparing R and R1, R with
R1+R2, and comparative result is exported to described control unit, described control unit by the comparison judgment unit according to being transmitted
Comparative result controls the switch of first refrigeration host computer and second refrigeration host computer.
5. air-conditioning system according to claim 3, it is characterised in that also include the first temperature acquiring unit；
First temperature acquiring unit is connected with described control unit signal, for obtaining the actual temperature in the water storage container
Spend T1, and the temperature results of acquisition are delivered to described control unit, described control unit is obtained according to by first temperature
The temperature results that unit is transmitted control the switch of second refrigeration host computer.
6. air-conditioning system according to claim 5, it is characterised in that also include the first temperature comparing unit；
If the cold-storage target water temperature of water storage container is T2, the second refrigeration host computer opening temperature be T3, the second refrigeration host computer shutdown
Temperature is TX；
The first temperature comparing unit is connected with first temperature acquiring unit and described control unit signal respectively, is used for
Compare T1With T2+T3And T1With T2+TX, and comparative result is exported to described control unit, described control unit is according to by described
The comparative result that first temperature comparing unit is transmitted controls the switch of second refrigeration host computer.
7. the air-conditioning system according to any claim in claim 3-6, it is characterised in that also include second temperature
Acquiring unit；
The second temperature acquiring unit is connected with described control unit signal, the actual confession for obtaining the air-conditioning cooling end
Cold temperature T4, and the temperature results of acquisition are delivered to described control unit, described control unit is according to by the second temperature
The temperature results that acquiring unit is transmitted control the switch of first refrigeration host computer.
8. air-conditioning system according to claim 7, it is characterised in that also include second temperature comparing unit；
If the cooling target water temperature at air-conditioning cooling end is T5, the first refrigeration host computer opening temperature be T6, first refrigeration host computer stops
Machine temperature is TY；
The second temperature comparing unit is connected with the second temperature acquiring unit and described control unit signal respectively, is used for
Compare T4With T5+T6And T4With T5+TY, and comparative result is exported to described control unit, described control unit is according to by described
The comparative result that second temperature comparing unit is transmitted controls the switch of first refrigeration host computer.
9. air-conditioning system according to claim 3, it is characterised in that also include electricity consumption period judging unit；
The electricity consumption period judging unit is connected with described control unit signal, for judging that it is high that the current power time is in electricity consumption
The peak period, with the specific period in level peak period and low power consumption period, and will determine that result is exported to described control unit,
Described control unit controls first refrigeration host computer and institute according to the judged result transmitted by the electricity consumption period judging unit
State the second refrigeration host computer switch.
10. a kind of control method of air-conditioning system, it is characterised in that comprise the following steps：
Water storage container cold-storage：
Second refrigeration host computer is opened carries out cold-storage to the water in water storage container；
Water storage container is let cool：
Cold water in water storage container enters in heat exchanger through the 4th watering cycle pipeline, and with the second watering cycle pipeline
Hot water carries out heat exchange, and the cold water of acquisition is delivered to air-conditioning cooling end by the second watering cycle pipeline；
First refrigeration host computer supplying cold directly：
Open the first cooling main frame and supply cold water to air-conditioning cooling end.
11. control method according to claim 10, it is characterised in that also comprise the following steps, the second refrigeration host computer is straight
Connect cooling：
Open the second cooling main frame and supply cold water to the 5th watering cycle pipeline, and pass through heat exchanger and the second watering cycle pipe
Hot water in road carries out heat exchange, and the cold water of acquisition is delivered to air-conditioning cooling end by the second watering cycle pipeline.
12. control method according to claim 11, it is characterised in that also comprise the following steps, in water storage container cold-storage
While, also pass through the second refrigeration host computer supplying cold directly.
13. control method according to claim 11, it is characterised in that also comprise the following steps, lets cool in water storage container
While, also pass through the second refrigeration host computer supplying cold directly.
14. the control method according to claim 11-13 any claims, it is characterised in that also comprise the following steps,
First refrigeration host computer and the second refrigeration host computer are combined to air-conditioning cooling end cooling.
15. control method according to claim 10, it is characterised in that
Judge that the current power time was in the low power consumption period such as electricity consumption period judging unit, then pass through control unit unlatching the
Two refrigeration host computers cold-storage into water storage container；
Such as during water storage container cold-storage, comparison judgment unit compares acquisition R ＜ R1, R2＞ 0, then open water storage container and put
It is cold.
16. control method according to claim 10, it is characterised in that as electricity consumption period judging unit judges current power
Time is in the peak of power consumption period or with the level peak period, and comparison judgment unit compares acquisition R ＜ R1, R2＞ 0, then individually
Water storage container is opened to let cool.
17. control method according to claim 10, it is characterised in that as electricity consumption period judging unit judges current power
Time is in the peak of power consumption period or with the level peak period, and comparison judgment unit compares acquisition R1+R3＞ R ＞ R1, R2＞ 0,
Then while unlatching water storage container is let cool, also pass through the first refrigeration host computer supplying cold directly.
18. control method according to claim 14, it is characterised in that as electricity consumption period judging unit judges current power
Time is in the peak of power consumption period or with the level peak period, and comparison judgment unit compares acquisition R ＞ R1+R3, R2＞ 0, then exist
While unlatching water storage container is let cool, also pass through the first refrigeration host computer and the second refrigeration host computer air conditioning.
19. control method according to claim 10, it is characterised in that as electricity consumption period judging unit judges current power
Time is in the peak of power consumption period or with the level peak period, and comparison judgment unit compares acquisition R ＜ R3, R2=0, then directly
Pass through the first refrigeration host computer cooling.
20. control method according to claim 14, it is characterised in that as electricity consumption period judging unit judges current power
Time is in the peak of power consumption period or with the level peak period, and comparison judgment unit compares acquisition R ＞ R3, R2=0, then pass through
First refrigeration host computer and the second refrigeration host computer air conditioning.
21. control method according to claim 10, it is characterised in that as electricity consumption period judging unit judges current power
Time was in the low power consumption period, the actual temperature T that control unit is obtained from the first temperature acquiring unit1Higher than default temperature
Degree, then open the second refrigeration host computer cold-storage into water storage container.
22. control method according to claim 10, it is characterised in that in arbitrary period, such as control unit is from second
The actual cooling temperature T obtained in temperature acquiring unit4Higher than preset temperature, then the first refrigeration host computer supplying cold directly is opened.
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Cited By (1)
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| CN107062482B (en) | 2019-08-09 |
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