CN105674517B - A kind of precision air conditioner energy saver and energy-saving control method for computer room - Google Patents
A kind of precision air conditioner energy saver and energy-saving control method for computer room Download PDFInfo
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- CN105674517B CN105674517B CN201610225711.8A CN201610225711A CN105674517B CN 105674517 B CN105674517 B CN 105674517B CN 201610225711 A CN201610225711 A CN 201610225711A CN 105674517 B CN105674517 B CN 105674517B
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- 238000000034 method Methods 0.000 title claims description 10
- 238000004378 air conditioning Methods 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 64
- 238000001514 detection method Methods 0.000 claims description 11
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- 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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- 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
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of precision air conditioner energy savers for computer room, at least two air-conditionings are provided in the computer room of place, be both provided in every air-conditioning first determine frequency air compressor, second determine frequency air compressor, two determine frequency wind turbine, temperature sensor and control circuit, temperature sensor is connected with control circuit；The precision air conditioner energy saver for computer room includes a team control controller, bus and frequency control module, and the control circuit of each air-conditioning is connected by bus with the communication ends of team control controller；Frequency control module includes：The rectifier of cut-in operation power supply, the first frequency changer circuit being connected with rectifier, the second frequency changer circuit being connected with rectifier and the third frequency changer circuit being connected with rectifier.Beneficial effects of the present invention：Not only the first invariable frequency compressor to each air-conditioning had been realized, the second invariable frequency compressor and two determine the frequency control of frequency wind turbine, but also realize and more air-conditionings in computer room are uniformly controlled.
Description
Technical field
The present invention relates to precision air conditioners, and in particular to a kind of for the precision air conditioner energy saver of computer room and Energy Saving Control side
Method.
Background technology
Precision air conditioner is computer room Special precision air conditioner (the also referred to as constant temperature for referring to fully meet the requirement of building environment condition
Constant wetting air conditioner), it is the new machine gradually to grow up in nearly 30 years.In the prior art, it is provided at least in computer room
Precision air conditioner, and be both provided in every air-conditioning first determine frequency air compressor, second determine frequency air compressor, two determine frequency wind
Machine, temperature sensor and control circuit, temperature sensor are connected with control circuit, to detect the temperature of each air-conditioning position
Degree.
Frequency air compressor is determined and second to determine frequency air compressor be phase asynchronous to determine frequency alternating current generator, institute due to first
Using its operating mode as：Stop, two states of work (i.e. 0 and 100% two working conditions), as long as there are 1% refrigeration need
Ask, first determine frequency air compressor and the second motor for determining frequency air compressor be just operated in 100% working condition.Fixed frequency is pressed
The shortcomings that contracting electromechanics machine working method：11) for the long-term work of invariable frequency compressor motor in full-speed state, energy consumption is larger；12) it is frequent to obtain
Start and stop compressor reduces compressor service life；13) during frequent starting compressor, starting current is big, and energy consumption is very big during startup,
There are great energy wastes.
The shortcomings that determining frequency blower motor working method：21) determine frequency blower motor and determine frequency alternating current generator, work to be phase asynchronous
Pattern is the working condition of full-speed operation in * 365 days in 24 hours, and even compressor of air conditioner do not work, during no refrigeration demand, wind turbine
Also it is maintained at 100% full speed operation state, the long-term full speed running of wind turbine, energy consumption is big；22) air quantity of wind turbine output cannot be with pressure
The working condition of contracting machine changes, and air quantity configuration is inaccurate.
It adds, there is the precision air conditioner of three or more in a computer room, since the work of every precision air conditioner is all phase
To independence, the location of every precision air conditioner difference, the temperature of each present position is different, if a position need plus
Heat, another position need to freeze, then the precision air conditioner for being in above-mentioned two position just will appear competition operation, inverted running
The phenomenon that, and simple air flowing will handle the phenomenon, precision air conditioner works in such circumstances just will appear unnecessary energy
The consumption of amount causes the waste of energy.
Invention content
For the deficiency in the presence of the prior art, the present invention provides a kind of precision air conditioner energy savers for computer room
And energy-saving control method, both realized the first invariable frequency compressor to each air-conditioning, the second invariable frequency compressor and two determine frequency wind
The frequency control of machine, and realize and more air-conditionings in computer room are uniformly controlled.
To achieve the above object, present invention employs following technical solutions：
The present invention provides a kind of precision air conditioner energy saver for computer room, including team control controller, bus, frequency control
Module and temperature sensor, temperature sensor are connected with the communication ends of team control controller, the control circuit of air-conditioning by bus with
The detection input of team control controller is connected；Frequency control module includes：The rectifier of cut-in operation power supply is connected with rectifier
The first frequency changer circuit, the second frequency changer circuit being connected with rectifier and the third frequency changer circuit being connected with rectifier, first
Frequency changer circuit is used to implement first and determines frequency air compressor and the connection of rectifier and control circuit, and the second frequency changer circuit is for real
Existing second determines frequency air compressor and the connection of rectifier and control circuit, and third frequency changer circuit is used to implement two and determines frequency wind turbine
With the connection of rectifier and control circuit, the first frequency changer circuit, the second frequency changer circuit and third frequency changer circuit includes and rectification
Frequency converter, conversion switch circuit and the switching power circuit that device is connected, conversion switch circuit are provided with the first power end, second
Power end, the first control terminal, the second control terminal and load end, the first power end are connected with frequency converter, second source end and control
Circuit is connected, and load end connection first determine frequency air compressor, second determine frequency air compressor or two are determined frequency wind turbine, switchs electric
Source circuit and the second control terminal of conversion switch circuit connect, and with the change frequency input terminal of team control controller and power frequency input terminal phase
Connect, to provide change frequency input terminal from Switching Power Supply to team control controller, power frequency input terminal and the second control terminal；Wherein, Suo Youbian
The control terminal of frequency device is connected with team control controller, determines first frequency air compressor to realize, second determines frequency air compressor
The frequency control for determining frequency wind turbine with two；First control terminal of conversion switch circuit is connected with the output terminal of team control controller, when
When becoming the second control terminal of frequency input terminal and three conversion switch circuits and accessing Switching Power Supply, three conversion switch circuits are by three
A frequency converter determine respectively with first frequency air compressor, second determine frequency air compressor and determine frequency wind turbine connection, to access frequency conversion
Power supply；When power frequency input terminal accesses Switching Power Supply, control circuit is determined frequency air with first and compressed by three conversion switch circuits
Machine, second determine frequency air compressor and are connected with frequency wind turbine is determined, to access power frequency supply.
In order to which design structure is simple, conversion switch circuit and switching power circuit easy to use, it is preferred that conversion is opened
Powered-down road includes：First contactor and second contactor, first contactor are interlocked with second contactor, the access of first contactor
It holds as the first power end, the incoming end of second contactor is second source end, and first contactor picks out end and second contactor
Pick out end connection after form load end, the control terminal of first contactor is the second control terminal of conversion switch circuit, and second connects
The control terminal of tentaculum is the first control terminal of conversion switch circuit；Switching power circuit includes single-pole double-throw switch (SPDT) and button is opened
Close, the moved end of single-pole double-throw switch (SPDT) access 24v Switching Power Supplies, two non-moving ends of single-pole double-throw switch (SPDT) respectively with team control controller
Become frequency input terminal with power frequency input terminal to be connected；The control terminal connection 24v Switching Power Supplies of key switch, the second control terminal pass through button
The primary path connection 220v working powers of switch, the common electrical source of team control controller are connected with 220v working powers.By setting
Count first contactor and second contactor so that the first invariable frequency compressor, the second invariable frequency compressor and two determine frequency wind turbine in frequency
It is protected in numerous opening and closing.
In order to remove the noise in input service power supply so that working power more standard, preferably rectifier with
First filter is connected between working power.
In order to remove the noise in the power supply of input converter output so that first determines frequency air compressor and the second fixed frequency
Variable-frequency power sources more standard when air compressor works, more to meet real-time requirement, it is preferred that in the first frequency changer circuit and
Second filter is respectively connected between frequency converter and conversion switch circuit in second frequency changer circuit.
Since team control controller can generate a large amount of heat in working long hours, if heat is excessive to will appear team control control
The situation of device damage.Therefore heat is excessive in order to prevent damages team control controller, it is preferred that is provided with by team control controller
Two radiator fans, to radiate to team control controller.
In order to coordinate a kind of energy saving running of above-mentioned precision air conditioner energy saver for computer room, the present invention also provides one kind
Energy-saving control method, including：
Step 1：Operating mode selects, and variable frequency work pattern and power frequency Working mould are selected by pressing touch switch circuit
Formula is opened and closed with the conversion with team control controller cooperating control conversion switch circuit, when select variable frequency work pattern first it is fixed frequently
Air compressor, second determine frequency air compressor and two are determined the variable-frequency power sources that frequency wind turbine accesses frequency converter offer；Work as selection
First determines frequency air compressor, second determines frequency air compressor and two are determined frequency wind turbine and access control electricity during power frequency operating mode
The power frequency supply that road provides, if selection variable frequency work pattern carries out step 2, if selection power frequency operating mode carries out step 9；
Step 2：Low frequency operation, the first frequency changer circuit, the second frequency changer circuit and third frequency changer circuit are respectively to working
In first determine frequency air compressor, second determine frequency air compressor and two are determined frequency wind turbine output 36HZ variable frequency work power supplys；
Step 3：Compressor operating state-detection, if having the in running order carry out step 4 of compressor, if compressor-free
In running order return to step two；
Step 4：Real time temperature height is preliminary to be judged, detection is obtained real time temperature and sends control electricity to by temperature sensor
Road, control circuit send obtained real time temperature to team control controller, and team control controller judges whether real time temperature is higher by and sets
Definite value if being higher by setting value, performs step 5, is carried out at the same time step 6；If not being higher by setting value, return to step three；
Step 5：Wind turbine 35HZ-50HZ frequency conversions, team control controller are carried out according to the difference of real time temperature and set temperature
PID arithmetic obtains fan frequency conversion frequency, and fan frequency conversion frequency is sent to the frequency converter of third frequency changer circuit；
Step 6：Real time temperature height judges that team control controller judges whether real time temperature is higher by 3 degree of setting value again,
If not being higher by 3 degree of setting value, step 7 is performed；If being higher by 3 degree of setting value, step 8 is performed；
Step 7：Compressor 35HZ-50HZ frequency conversions, team control controller are carried out according to the difference of real time temperature and set temperature
PID arithmetic obtains compressor variable frequency frequency, and compressor variable frequency frequency is sent to and determines the compression of frequency air with first in work
Machine or second determine frequency air compressor connection frequency converter；
Step 8：Output 50HZ variable-frequency power sources is forced, team control controller is forced to determine the compression of frequency air with first in work
Machine or the second frequency converter for determining the connection of frequency air compressor export 50HZ variable-frequency power sources；
Step 9：Power frequency works, first determine frequency air compressor, second determine frequency air compressor and two to determine frequency wind turbine equal
Power frequency work is carried out under the control of control circuit.
Compared with the prior art, the present invention has the advantages that：
1) by setting team control controller and frequency converter, the first invariable frequency compressor to each air-conditioning, second fixed is realized
Frequency compressor and two frequency control for determining frequency wind turbine, so as to which its work be made to meet the real-time refrigeration demand in computer room, avoid
First invariable frequency compressor, the second invariable frequency compressor and two determine full speed running during frequency blower fan work, and starting current also need not
It is very big, reach energy-efficient purpose；
2) it by setting team control controller and bus, realizes and more air-conditionings in computer room is uniformly controlled so that each
The work of air-conditioning is more coordinated, and avoids the competition operation in same computer room between each air-conditioning or inverted running, reaches
Energy-efficient purpose；
3) by the way that rectifier is set to carry out rectification to the input voltage of frequency converter, line voltage 220v exchanges are changed into straight
Stream prepares for the variable frequency work of the second frequency converter, third frequency converter and the 4th frequency converter, and the second frequency converter, the
The input voltage of three frequency converters and the 4th frequency converter shares the output voltage of the first frequency converter, reduces making for rectification circuit
With so that circuit becomes simpler；
4) by setting conversion switch circuit and touch switch circuit, realize user by press touch switch circuit to
Conversion switch circuit and team control controller send out access variable-frequency power sources signal or access power frequency supply signal so that change-over switch electricity
Road direction first determines frequency air compressor, second determines frequency air compressor or two are determined what frequency wind turbine conversion ground access frequency converter provided
The power frequency supply that variable-frequency power sources and control circuit provide, it is achieved thereby that user to air-conditioning work pattern (i.e. energy-saving frequency conversion pattern,
Specified power frequency pattern) selection so that the control work more hommization to air-conditioning.
Description of the drawings
Fig. 1 is the circuit diagram of the frequency control module of the precision air conditioner energy saver for computer room；
Fig. 2 is the peripheral circuit diagram of the team control controller of the precision air conditioner energy saver for computer room；
Fig. 3 is the flow chart of energy-saving control method.
Specific embodiment
The present invention proposes a kind of precision air conditioner energy saver for computer room, and at least two skies are provided in the computer room of place
Adjust, be both provided in every air-conditioning first determine frequency air compressor, second determine frequency air compressor, two determine frequency wind turbine, temperature
Sensor and control circuit, temperature sensor are connected with control circuit, to detect the temperature of each air-conditioning position.
As shown in FIG. 2 and 3, the precision air conditioner energy saver for computer room includes team control controller PLC, bus
(not shown), frequency control module and temperature sensor (not shown), team control controller PLC use H2U-1616MR types
Number, temperature sensor is connected with the communication ends COM2 of team control controller PLC, and to detect real time temperature, the control circuit of air-conditioning is equal
It is connected by 485 buses with the detection input of team control controller PLC, control circuit is provided with host switch branch, wind turbine is opened
Close branch, the first invariable frequency compressor switching branches and the second invariable frequency compressor switching branches, host switch branch, fan switch
The switch contact of branch, the first invariable frequency compressor switching branches and the second invariable frequency compressor switching branches controls respectively with team control
The detection input (X3, X4, X5, X6) of device PLC is connected, to detect host, wind turbine, the first invariable frequency compressor and second respectively
The working condition of invariable frequency compressor is (i.e.：Whether work)；Frequency control module includes：Cut-in operation power supply (line voltage 220V
Exchange) rectifier VFD1, the first frequency changer circuit being connected with rectifier VFD1, the second variable-frequency electric for being connected with rectifier VFD1
Road and the third frequency changer circuit being connected with rectifier VFD1, rectifier VFD1 use MD810-20M models, the first frequency changer circuit
The first connection for determining frequency air compressor M1 and rectifier VFD1 and control circuit is used to implement, the second frequency changer circuit is used to implement
Second determines the connection of frequency air compressor M2 and rectifier VFD1 and control circuit, and third frequency changer circuit is used to implement two fixed frequencies
The connection of wind turbine M3 and rectifier VFD1 and control circuit.
First frequency changer circuit, the second frequency changer circuit and third frequency changer circuit include the frequency converter being connected with rectifier VFD1
VFD2, conversion switch circuit 1 and switching power circuit 2, frequency converter VFD2 use MD810-50M models, conversion switch circuit 1
It is provided with the first power end, second source end, the first control terminal, the second control terminal and load end, the first power end and frequency converter
VFD2 is connected, and second source end is connected with control circuit 3, and it is empty that frequency air compressor M1, the second fixed frequency are determined in load end connection first
Air compressor M2 or two determine frequency wind turbine M3, and switching power circuit 2 is connect with the second control terminal of conversion switch circuit 1, and with
The change frequency input terminal X1 of team control controller PLC is connected with power frequency input terminal X2, with to the change frequency input terminal of team control controller PLC
X1, power frequency input terminal X2 and the second control terminal provide Switching Power Supply.Wherein, all frequency converter VFD2 control terminal (1DI1,
1DI2,1DI3) it is connected with the output terminal of team control controller PLC (Y10, Y11, Y12), the compression of frequency air is determined first to realize
Machine M1, second determine frequency air compressor M2 and two frequency control for determining frequency wind turbine M3；First control terminal of conversion switch circuit 1
It is connected with the output terminal of team control controller PLC, when the second control terminal for becoming frequency input terminal X1 and three conversion switch circuits 1 connects
When entering Switching Power Supply, three frequency converter VFD2 are determined frequency air compressor M1, second by three conversion switch circuits 1 with first respectively
Determine frequency air compressor M2 and connected with frequency wind turbine M3 is determined, to access variable-frequency power sources；When power frequency input terminal X2 accesses Switching Power Supply,
Control circuit 3 and first are determined frequency air compressor M1, second determine frequency air compressor M2 and determine frequency by three conversion switch circuits 1
Wind turbine M3 is connected, to access power frequency supply.
Conversion switch circuit 1 includes：First contactor (KM1, KM3, KM5) and second contactor KM2, first contactor
(KM1, KM3, KM5) is interlocked with second contactor KM2, and the incoming end of first contactor (KM1, KM3, KM5) is the first power end,
The incoming end of second contactor KM2 is second source end, and first contactor (KM1, KM3, KM5) picks out end and second contactor
Picking out for KM2 forms load end after end connects, the control terminal of first contactor (KM1, KM3, KM5) is conversion switch circuit 1
Second control terminal, the control terminal of second contactor KM2 are the first control terminal of conversion switch circuit 1；Switching power circuit 2 includes
The moved end access 24v Switching Power Supplies of single-pole double-throw switch (SPDT) SA1 and key switch KA1, single-pole double-throw switch (SPDT) SA1, single-pole double throw are opened
Two non-moving ends for closing SA1 are connected respectively with the change frequency input terminal of team control controller PLC and power frequency input terminal；Key switch KA1's
Control terminal connects 24v Switching Power Supplies, and the second control terminal of conversion switch circuit 1 connects 220v by the primary path of key switch KA
Working power, the common electrical source C0 of team control controller PLC are connected with 220v working powers, with for the defeated of team control controller PLC
Outlet (Y0, Y2, Y4) provides out-put supply, and the first control terminal of three conversion switch circuits 1 is respectively with team control controller PLC's
Three output terminals (Y0, Y2, Y4) are connected.
First filter EMI is connected between rectifier VFD1 and working power.
Is respectively connected between frequency converter VFD2 and conversion switch circuit 1 in the first frequency changer circuit and the second frequency changer circuit
Two wave filter LC.
As shown in figure 3, in order to coordinate a kind of energy saving running of above-mentioned precision air conditioner energy saver for computer room, the present invention
A kind of energy-saving control method is also provided, including：
Step 1 s1：Operating mode selects, and variable frequency work pattern and power frequency is selected to work by pressing touch switch circuit
Pattern is opened and closed with the conversion with team control controller cooperating control conversion switch circuit, and first determines when select variable frequency work pattern
Frequency air compressor, second determine frequency air compressor and two are determined the variable-frequency power sources that frequency wind turbine accesses frequency converter offer；It is elected
First determines frequency air compressor, second determines frequency air compressor and two are determined frequency wind turbine and access control when selecting power frequency operating mode
The power frequency supply that circuit provides, if selection variable frequency work pattern carries out step 2 s2, if selection power frequency operating mode carries out step
Nine s9；
Step 2 s2：Low frequency operation, the first frequency changer circuit, the second frequency changer circuit and third frequency changer circuit are respectively to just in work
First in work determines frequency air compressor, second determines frequency air compressor and two are determined frequency wind turbine output 36HZ variable frequency work electricity
Source；
Step 3 s3：Compressor operating state-detection, if having the in running order progress step 4 s4 of compressor, if without pressure
In running order two s2 of return to step of contracting machine；
Step 4 s4：Real time temperature height is preliminary to be judged, detection is obtained real time temperature and sends control to by temperature sensor
Circuit, control circuit send obtained real time temperature to team control controller, and team control controller judges whether real time temperature is higher by
Setting value if being higher by setting value, performs step 5 s5, is carried out at the same time step 6 s6；If not being higher by setting value, return to step three
s3；
Step 5 s5：Wind turbine 35HZ-50HZ frequency conversions, team control controller are carried out according to the difference of real time temperature and set temperature
PID arithmetic obtains fan frequency conversion frequency, and fan frequency conversion frequency is sent to the frequency converter of third frequency changer circuit；
Step 6 s6：Real time temperature height judges that team control controller judges whether real time temperature is higher by setting value 3 again
Degree if not being higher by 3 degree of setting value, performs step 7 s7；If being higher by 3 degree of setting value, step 8 s8 is performed；
Step 7 s7：Compressor 35HZ-50HZ frequency conversions, team control controller according to real time temperature and set temperature difference into
Row PID arithmetic obtains compressor variable frequency frequency, and compressor variable frequency frequency is sent to and determines frequency air pressure with first in work
Contracting machine or second determine frequency air compressor connection frequency converter；
Step 8 s8：Output 50HZ variable-frequency power sources is forced, team control controller is forced to determine frequency air pressure with first in work
Contracting machine or the second frequency converter for determining the connection of frequency air compressor export 50HZ variable-frequency power sources；
Step 9 s9：Power frequency works, and first determines frequency air compressor, second determines frequency air compressor and two are determined frequency wind turbine
Power frequency work is carried out under the control of control circuit.
The operation principle of the present embodiment：In use, carrying out step 1 s1 first, single-pole double-throw switch (SPDT) SA1 is pressed, to realize
User selects to connect energy saving input terminal X1 or power frequency input terminal X2.
(it is when user selects the energy saving input terminal X1 of connection：Select energy saver mode) when, then depresses button switch KA1, it presses
Key switch KA1 control terminal access 24v Switching Power Supplies, key switch KA1 be closed, the first frequency changer circuit, the second frequency changer circuit and
The control terminal of the first contactor (KM1, KM3, KM5) of the conversion switch circuit 1 of third frequency changer circuit is (i.e.：Second control terminal) it is defeated
Enter for 220V working powers (i.e.：Connect firewire L11), the output terminal (Y0, Y2, Y4) of team control controller PLC is to second contactor
The control terminal output 0V of (KM2, KM4, KM6), therefore first contactor (KM1, KM3, KM5) connection (is：It is connect with frequency converter
Variable-frequency power sources connect), second contactor (KM2, KM4, KM6) disconnection (is：The power frequency supply being connect with control circuit breaks
Open), energy saver mode starts.Under the working condition of energy saver mode, step 2 s2 is carried out：Low frequency operation, the first frequency changer circuit,
Two frequency changer circuits and third frequency changer circuit are respectively to just first determining frequency air compressor M1, second determine frequency air pressure at work
Contracting machine M2 and two determine frequency wind turbine M3 output 36HZ variable frequency work power supplys；Then step 3 s3 is carried out：Compressor operating state is examined
It surveys, step 4 s4：Real time temperature height is preliminary to be judged, detection is obtained real time temperature and sends control circuit 3 to by temperature sensor,
Control circuit 3 sends obtained real time temperature to team control controller PLC, and team control controller PLC judges whether real time temperature is high
Go out setting value, if being higher by setting value, perform step 5 s5, be carried out at the same time step 6 s6；If not being higher by setting value, return to step three
s3；Step 5 s5：Wind turbine 35HZ-50HZ frequency conversions, team control controller PLC are carried out according to the difference of real time temperature and set temperature
PID arithmetic obtains fan frequency conversion frequency, and fan frequency conversion frequency is sent to the frequency converter of third frequency changer circuit；Step 6 s6：
Real time temperature height judges that team control controller PLC judges whether real time temperature is higher by 3 degree of setting value, if not being higher by setting again
3 degree of value performs step 7 s7；If being higher by 3 degree of setting value, step 8 s8 is performed；Step 7 s7：Compressor 35HZ-50HZ frequency conversions,
Team control controller carries out PID arithmetic according to the difference of real time temperature and set temperature and obtains compressor variable frequency frequency, and will compression
Machine conversion frequencies, which are sent to, to be determined frequency air compressor with first in work or second determines the frequency converter that frequency air compressor connect；
Step 8 s8：Output 50HZ variable-frequency power sources is forced, team control controller is forced to determine frequency air compressor or the with first in work
Two determine the frequency converter output 50HZ variable-frequency power sources of frequency air compressor connection, so as to fulfill the first invariable frequency compressor and the second fixed frequency
Compressor works under variable frequency work pattern, so as to finally realize the frequency control to fixed frequency air conditioner, meets modern energy saving
Demand.
When selecting power frequency operating mode (i.e. by SA1：Perform step 9 s9) when, team control controller PLC is closed to first
The frequency converter output of frequency changer circuit, the second frequency changer circuit and third frequency changer circuit, disconnects key switch KA1, first contactor
For 0V, first contactor (KM1, KM3, KM5) disconnects for the control terminal input of (KM1, KM3, KM5), and team control controller PLC is to second
The control terminal input 220v working powers of contactor (KM2, KM4, KM6), first contactor (KM1, KM3, KM5) disconnect, and second
Contactor (KM2, KM4, KM6) is closed, and therefore, first determines frequency air compressor M1, second determines frequency air compressor M2 and two
Determine frequency wind turbine M3 access control circuit offer power frequency supply, first determine frequency air compressor M1, second determine frequency air compress
Machine M2 and two determine frequency wind turbine M3 and are in power frequency working condition.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail in good embodiment, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the right of invention.
Claims (6)
1. a kind of precision air conditioner energy saver for computer room, which is characterized in that including：Team control controller, bus, frequency control
Module and temperature sensor, temperature sensor are connected with the communication ends of team control controller, the control circuit of air-conditioning by bus with
The detection input of team control controller is connected；
Frequency control module includes：The rectifier of cut-in operation power supply, the first frequency changer circuit being connected with rectifier and rectifier
The second connected frequency changer circuit and the third frequency changer circuit being connected with rectifier, the first frequency changer circuit are used to implement the first fixed frequency
The connection of air compressor and rectifier and control circuit, the second frequency changer circuit be used to implement second determine frequency air compressor with it is whole
The connection of device and control circuit is flowed, third frequency changer circuit is used to implement two and determines frequency wind turbine and rectifier and the company of control circuit
It connects, the first frequency changer circuit, the second frequency changer circuit and third frequency changer circuit include the frequency converter, the change-over switch that are connected with rectifier
Circuit and switching power circuit, conversion switch circuit are provided with the first power end, second source end, the first control terminal, second
Control terminal and load end, the first power end are connected with frequency converter, and second source end is connected with control circuit, load end connection first
Determine frequency air compressor, second determine frequency air compressor or two are determined frequency wind turbine, switching power circuit and conversion switch circuit
Second control terminal connects, and is connected with the change frequency input terminal of team control controller and power frequency input terminal, with the change to team control controller
Frequency input terminal, power frequency input terminal and the second control terminal provide Switching Power Supply；
Wherein, the control terminal of all frequency converters is connected with team control controller, determines frequency air compressor, second to first to realize
Determine frequency air compressor and two frequency control for determining frequency wind turbine；First control terminal of conversion switch circuit and team control controller
Output terminal is connected, and when the second control terminal for becoming frequency input terminal and three conversion switch circuits accesses Switching Power Supply, three turn
Switching circuit is changed three frequency converters with first are determined to frequency air compressor respectively, second determine frequency air compressor and determine frequency wind turbine to connect
It is logical, to access variable-frequency power sources；When power frequency input terminal accesses Switching Power Supply, three conversion switch circuits are by control circuit and first
Determine frequency air compressor, second determine frequency air compressor and connected with frequency wind turbine is determined, to access power frequency supply.
2. the precision air conditioner energy saver according to claim 1 for computer room, which is characterized in that
Conversion switch circuit includes：First contactor and second contactor, first contactor are interlocked with second contactor, and first connects
The incoming end of tentaculum is the first power end, and the incoming end of second contactor is second source end, first contactor pick out end and
Picking out for second contactor forms load end after end connects, the control terminal of first contactor is controlled for the second of conversion switch circuit
End, the control terminal of second contactor are the first control terminal of conversion switch circuit；
Switching power circuit includes single-pole double-throw switch (SPDT) and key switch, and 24v Switching Power Supplies are accessed in the moved end of single-pole double-throw switch (SPDT),
Two non-moving ends of single-pole double-throw switch (SPDT) are connected respectively with the change frequency input terminal of team control controller and power frequency input terminal；Key switch
Control terminal connects 24v Switching Power Supplies, and the second control terminal connects 220v working powers, team control control by the primary path of key switch
The common electrical source of device is connected with 220v working powers, the first control terminal of three conversion switch circuits respectively with team control controller
Three output terminals be connected.
3. the precision air conditioner energy saver according to claim 1 for computer room, which is characterized in that in rectifier and work
First filter is connected between power supply.
4. the precision air conditioner energy saver according to claim 1 for computer room, which is characterized in that in the first frequency changer circuit
And second be respectively connected with second filter in frequency changer circuit between frequency converter and conversion switch circuit.
5. the precision air conditioner energy saver according to claim 1 for computer room, which is characterized in that by team control controller
Setting is there are two radiator fan, to radiate to team control controller.
6. a kind of energy-saving control method, which is characterized in that include the use of the precision air conditioner as described in claim 1 for being used for computer room
The following steps of energy saver：
Step 1：Operating mode selects, and variable frequency work pattern and power frequency operating mode are selected by pressing touch switch circuit, with
It is opened and closed with the conversion of team control controller cooperating control conversion switch circuit, first determines frequency air pressure when selecting variable frequency work pattern
Contracting machine, second determine frequency air compressor and two are determined the variable-frequency power sources that frequency wind turbine accesses frequency converter offer；When selection power frequency work
First determines frequency air compressor, second determines frequency air compressor and two are determined frequency wind turbine and access control circuit offer during operation mode
Power frequency supply, if selection variable frequency work pattern carries out step 2, if selection power frequency operating mode carries out step 9；
Step 2：Low frequency operation, the first frequency changer circuit, the second frequency changer circuit and third frequency changer circuit are respectively to just at work
First determines frequency air compressor, second determines frequency air compressor and two are determined frequency wind turbine output 36HZ variable frequency work power supplys；
Step 3：Compressor operating state-detection, if having the in running order carry out step 4 of compressor, if compressor-free is in
Working condition return to step two；
Step 4：Real time temperature height is preliminary to be judged, detection is obtained real time temperature and sends control circuit to by temperature sensor, is controlled
Circuit processed sends obtained real time temperature to team control controller, and team control controller judges whether real time temperature is higher by setting value,
If being higher by setting value, step 5 is performed, is carried out at the same time step 6；If not being higher by setting value, return to step three；
Step 5：Wind turbine 35HZ-50HZ frequency conversions, team control controller carry out PID fortune according to the difference of real time temperature and set temperature
Calculation obtains fan frequency conversion frequency, and fan frequency conversion frequency is sent to the frequency converter of third frequency changer circuit；
Step 6：Real time temperature height judges that team control controller judges whether real time temperature is higher by 3 degree of setting value, if not again
3 degree of setting value is higher by, performs step 7；If being higher by 3 degree of setting value, step 8 is performed；
Step 7：Compressor 35HZ-50HZ frequency conversions, team control controller carry out PID according to the difference of real time temperature and set temperature
Operation obtains compressor variable frequency frequency, and by compressor variable frequency frequency send to work in first determine frequency air compressor or
Second determines the frequency converter of frequency air compressor connection；
Step 8：Force output 50HZ variable-frequency power sources, team control controller force with work in first determine frequency air compressor or
Second determines the frequency converter output 50HZ variable-frequency power sources of frequency air compressor connection；
Step 9：Power frequency works, and first determines frequency air compressor, second determines frequency air compressor and two are determined frequency wind turbine and controlling
Power frequency work is carried out under the control of circuit processed.
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| CN106766313A (en) * | 2017-02-06 | 2017-05-31 | 青岛澳柯玛超低温冷冻设备有限公司 | A kind of Cord blood case with energy-saving and frequency-variable technology |
| CN112277987B (en) * | 2020-11-26 | 2021-10-22 | 石家庄国祥运输设备有限公司 | Multi-stage refrigeration control method for air conditioning unit of railway vehicle |
| CN115597213A (en) * | 2021-07-09 | 2023-01-13 | 腾讯科技（深圳）有限公司（Cn） | Air conditioner compressor control method, device, equipment, storage medium and air conditioner system |
| CN114877431B (en) * | 2022-04-20 | 2023-10-31 | 中车青岛四方机车车辆股份有限公司 | Active redundant air conditioning unit and control method |
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