CN106705390A - Fan coil self-adaptive energy saving control device and method - Google Patents
Fan coil self-adaptive energy saving control device and method Download PDFInfo
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- CN106705390A CN106705390A CN201710170750.7A CN201710170750A CN106705390A CN 106705390 A CN106705390 A CN 106705390A CN 201710170750 A CN201710170750 A CN 201710170750A CN 106705390 A CN106705390 A CN 106705390A
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- water valve
- temperature
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- air
- relay
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Classifications
-
- 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
- F24F11/30—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
- F24F11/70—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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- 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
Abstract
The invention relates to a fan coil self-adaptive energy saving control device and method. The device comprises a control circuit, an operation panel, a detection unit, a fan control loop and a water valve control loop. The detection unit comprises a return air temperature sensor and a supply air temperature sensor. The operation panel, the return air temperature sensor and the supply air temperature sensor are all connected with the input end of the control circuit. The fan control loop and the water valve control loop are both connected with the output end of the control circuit. The control circuit is connected with a background center through a CAN bus or an RS485 bus or a TCP/IP network. Self-adaptive PID algorithm operation processing is carried out by continuously collecting supply air temperature and return air temperature, control signals are automatically output to the fan control loop and the water valve control loop, the fan air speed and the opening of a floating point valve are synergistically controlled, and after self-adaptive adjustment, indoor temperature is rapidly stabilized, and the vibration amplitude is small.
Description
Technical field
The present invention relates to HVAC automatic control technology field, more particularly to fan coil adaptive power conservation control device
And method.
Background technology
With continuing to develop for fan coil technology, the field of operation also becomes big therewith, also more and more with quantity.Wind
Machine coil pipe with the energy consumption for whole air-conditioning system has certain influence.Therefore, it is possible to preferably control fan coil
Operation also there is certain positive meaning for energy saving.
Also only it is to wind using common electric two-way valve or magnetic valve for traditional fan coil water valve control technology
Machine coil pipe chilled water is controlled.System only detects the air themperature at return air inlet, and is compared with setting value, reaches and works as room
When temperature is less than setting value, valve closing, conversely, the control effect of valve opening.It is cold that traditional fan coil technology is only capable of control
Freeze the break-make of water, it is impossible to control the flow of chilled water, cause the system response cycle more long, have in temperature control larger stagnant
Property afterwards, temperature cannot be precisely controlled, and it is unstable to easily cause indoor temperature control mesh, human comfort reduction.
In addition, the controller of the central air conditioner system of current application is mostly the control of water side and the control of wind side individually dividing
Open, it is impossible to accomplish both synergic adjustments, easily occur control lag, it is not accurate the problems such as.
In method for managing system, traditional central air conditioner system is relied primarily on manually, is lacking the feelings of effective way to manage
Indoor temperature sets and unreasonable, indoor still keeps the situation of operation of air conditioner very common in the case of nobody under condition.Due in
Centre air-conditioning system tail-end blower fan coil pipe is substantially independent operating so that coiler fan does not possess trip information real-time Transmission work(
Can, therefore causing system to lack corresponding effective information so that whole management system can only be by simple start-up and shut-down control mode
To control the operation of fan coil, it is impossible to carry out effective intelligent management with control.
The content of the invention
For above-mentioned technical problem, an object of the present invention is to provide fan coil adaptive power conservation control device,
It realizes that self adaptation carries out temperature correction, synergic adjustment chilled-water flow and blower fan wind speed, the energy-conservation energy.
The second object of the present invention is to provide fan coil self-adapting energy-saving control method, and it can realize that self adaptation is carried out
Temperature correction, synergic adjustment chilled-water flow and blower fan wind speed, the energy-conservation energy.
One of to achieve the above object, the present invention is adopted the following technical scheme that：
Fan coil adaptive power conservation control device, is applied to fan coil, including control circuit, guidance panel, detection
Unit, air-blower control loop and water valve control loop, the detection unit include that return air temperature sensor and wind pushing temperature are sensed
Device, the guidance panel, return air temperature sensor and wind pushing temperature sensor are all connected with controlling the input of circuit, air-blower control
Loop and water valve control loop are all connected with controlling the output end of circuit, and the control circuit passes through a CAN, or by one
RS485 buses, or by TCP/IP network connections backstage center；The control circuit is used for according to setting from guidance panel
Constant temperature degree, the return air temperature from return air temperature sensor transmission, the wind pushing temperature sent from wind pushing temperature sensor are carried out
Air-blower control loop and water valve control loop are output control signals to after treatment, to adjust the air output and water valve of fan coil
Opening and closing duration.
Preferably, the wind pushing temperature sensor and return air temperature sensor are NTC10K type negative temperature coefficient thermistor powers
Resistance sensor.
Preferably, the air-blower control loop is three fast blower fans.
Preferably, the water valve control loop is tri-state floating-point valve.
Preferably, the control circuit includes voltage stabilizing chip, single-chip microcomputer and memory, and the input connection of voltage stabilizing chip is outer
Portion's power supply, output end connects the feeder ear of single-chip microcomputer, memory connection single-chip microcomputer.
Preferably, the model AS1117-3.3 of the voltage stabilizing chip, the model STM32F051C4 of the single-chip microcomputer,
The model FM24C08 of the memory.
Preferably, the air-blower control loop and water valve control loop connect single-chip microcomputer by a relay driver.
Preferably, the model ULN2003 of the relay driver.
Preferably, the air-blower control loop includes three fast blower fans, relay S1, relay S2 and relay S3, described
The output end of relay S1, relay S2 and relay S3 is connected with three fast blower fans, relay S1, relay S2 and relay
The input of S3 is all connected with relay driver.
To achieve the above object two, the present invention is adopted the following technical scheme that：
The control circuit described in the first purpose is applied to, is comprised the following steps：
S1：The design temperature of user input is received, indoor temperature is constantly detected, and by return air temperature sensor and air-supply
Temperature sensor constantly obtains return air temperature and wind pushing temperature respectively；
S2：According to the difference of current indoor temperature and design temperature, obtain between air rate adjustment range parameter and air rate adjustment
Every parameter, and the continuous indoor temperature for obtaining is carried out into physical modeling obtain indoor temperature model, according to the indoor temperature model
Amendment air rate adjustment range parameter and air rate adjustment spacing parameter, according to revised air rate adjustment range parameter and air rate adjustment
Spacing parameter is calculated blast velocity control parameter；
S3：According to return air temperature and the difference of wind pushing temperature, water valve adjustment range parameter and water valve adjustment spacing parameter are obtained,
And by the continuous return air temperature for obtaining and give point temperature to carry out physical modeling respectively to obtain return air temperature model and wind pushing temperature mould
Type, according to return air temperature model and send point temperature model amendment water valve adjustment range parameter and water valve to adjust spacing parameter, according to
Revised water valve adjustment range parameter and water valve adjustment spacing parameter are calculated new water valve control ratio value；
S4：Corresponding magnitude of voltage is exported to three fast blower fans to adjust the air output of fan coil according to blast velocity control parameter,
Difference according to new water valve control ratio value and current water valve control ratio value is calculated the opening and closing duration of water valve.
Compared to existing technology, the beneficial effects of the present invention are：
The present invention carries out self-adaptive PID algorithm calculation process by the continuous collection to wind pushing temperature, return air temperature, automatically
Air-blower control loop and water valve control loop, synergic adjustment blower fan wind speed and floating-point valve opening are output control signals to, by certainly
After adapting to regulation, indoor temperature stabilized speed is fast, and Oscillation Amplitude is small.
Brief description of the drawings
Fig. 1 is the function structure chart of fan coil adaptive power conservation control device of the invention；
Fig. 2 is the circuit structure diagram of control circuit of the invention；
Fig. 3 is the circuit structure diagram of relay driver of the invention；
Fig. 4 is the circuit structure diagram in air-blower control loop of the invention；
Fig. 5 is the circuit structure diagram of water valve control loop of the invention；
Fig. 6 is the circuit structure diagram of wind pushing temperature sensor of the invention, return air temperature sensor；
Fig. 7 is the flow chart of fan coil self-adapting energy-saving control method of the invention.
Specific embodiment
Below, with reference to accompanying drawing and specific embodiment, the present invention is described further：
As shown in figure 1, the present invention provides fan coil adaptive power conservation control device, the wind in air conditioning terminal is applied
Machine coil pipe, it is main to include control circuit, guidance panel, detection unit, air-blower control loop and water valve control loop, the detection
Unit includes return air temperature sensor and wind pushing temperature sensor, guidance panel, return air temperature sensor and wind pushing temperature sensing
Device is all connected with controlling the input of circuit, and air-blower control loop and water valve control loop are all connected with controlling the output end of circuit, should
Control circuit passes through a CAN, or by a RS485 buses, or by TCP/IP networks letter bus connection backstage
The heart, the parameters of the fan coil operation that will be detected are uploaded to backstage in real time, realize unified management and coordinated signals.Control
Return air temperature that circuit processed is used to being sent according to the design temperature from guidance panel, from return air temperature sensor, from giving
The wind pushing temperature that air temperature sensor sends outputs control signals to air-blower control time after carrying out self-adaptive PID algorithm calculation process
Road and water valve control loop, to adjust the air output of fan coil and the opening and closing duration of water valve.
Referring to Fig. 2, control circuit of the invention includes voltage stabilizing chip U4, single-chip microcomputer U1 and memory U3, voltage stabilizing chip
Input connects external power source, and output end connects the feeder ear of single-chip microcomputer, memory connection single-chip microcomputer.External power source is AC12V,
Powered to peripheral chip by producing 5V voltages after rectifier bridge, buck regulator, voltage stabilizing chip U4 provides 3.3V for single-chip microcomputer
Power supply.Memory uses high reliability memory, for data record, can depositing using model FM24C08 in the present invention
Reservoir, erasable number of times more than 1,000,000 times, data are preserved 100 years.The model of single-chip microcomputer is preferably STM32F051C4, voltage stabilizing chip
Model be preferably AS1117-3.3.
Single-chip microcomputer inside has CPU, program data memory, Timer/Counter, UART serial ports, I/O interfaces, high-speed a/d
Conversion, SPI interface, PCA, house dog and the module such as R/C pierce circuits in piece, with high speed, low-power consumption, superpower anti-interference
The features such as, 13 tunnels, 12 A/D conversions at a high speed, 2 tunnel independence serial ports, 1 road I2C is widely used in the motor control of strong jamming occasion.
Air-blower control loop is preferably three fast blower fans, and water valve control loop is preferably tri-state floating-point valve.Further, blower fan
Control loop and water valve control loop connect single-chip microcomputer by a relay driver.It is illustrated in figure 3 relay driver
Circuit structure diagram, it selects model ULN2003.With reference to Fig. 4 and Fig. 5, air-blower control loop includes three fast blower fans, relay
The output end of S1, relay S2 and relay S3, the relay S1, relay S2 and relay S3 connects with three fast blower fans
Connect, the input of relay S1, relay S2 and relay S3 is all connected with relay driver.Three road DO interfaces drive with relay
Dynamic device connection, drives fan coil air quantity high, output control voltage letter when single-chip microcomputer output control voltage signal is to relay S1
Number to relay S2 when drive fan coil in air quantity, when output control voltage signal is to relay S3 drive the low wind of fan coil
Amount.
The tri-state floating-point valve of water valve controling circuit is connected to relay driver by two relays, when controller output
When control voltage signal is to relay S4, water valve is powered and slowly open, when controller output control voltage signal gives relay S5
When, water valve slowly closing.The electronic feedback water valve state in place of U5 optocouplers and each resistance composition, single-chip microcomputer is connected to by AI 3
U1.The characteristics of having sensitive in real time due to the control signal of single-chip microcomputer, the opening and closing of floating-point valve are slowly to carry out.Standard-sized sheet
With the fully closed time about at 45 seconds or so.The single-chip microcomputer of the present embodiment after fuzzy PID algorithm calculation process by exporting tri-state
The actuation time ratio of floating-point valve, tri-state floating-point valve accordingly controlled to adjust, it is to avoid as traditional water valve open and close two states
Regulation causes the situation that controlled room temperature field changes greatly.
Guidance panel is used to enter trip temperature setting to user.The circuit of wind pushing temperature sensor and return air temperature sensor is former
Reason refers to Fig. 6, and resistance Rd1 and Rd2 are the pull-up supplying resistance of two-way NTC thermistor, and Cd1 and Cd2 is filter capacitor, AI 1
With AI2 connect single-chip microcomputer AI interfaces, this circuit have high accuracy and it is anti-interference strong the characteristics of.
Referring to Fig. 7, the present invention also provides fan coil self-adapting energy-saving control method, is applied to described control circuit,
Comprise the following steps：
S1：The design temperature of user input is received, indoor temperature is constantly detected, and by return air temperature sensor and air-supply
Temperature sensor constantly obtains return air temperature and wind pushing temperature respectively；
S2：According to the difference of current indoor temperature and design temperature, obtain between air rate adjustment range parameter and air rate adjustment
Every parameter, and the continuous indoor temperature for obtaining is carried out into physical modeling obtain indoor temperature model, according to the indoor temperature model
Amendment air rate adjustment range parameter and air rate adjustment spacing parameter, according to revised air rate adjustment range parameter and air rate adjustment
Spacing parameter is calculated blast velocity control parameter, that is, obtains time interval execution；
S3：According to return air temperature and the difference of wind pushing temperature, water valve adjustment range parameter and water valve adjustment spacing parameter are obtained,
And by the continuous return air temperature for obtaining and give point temperature to carry out physical modeling respectively to obtain return air temperature model and wind pushing temperature mould
Type, according to return air temperature model and send point temperature model amendment water valve adjustment range parameter and water valve to adjust spacing parameter, according to
Revised water valve adjustment range parameter and water valve adjustment spacing parameter are calculated new water valve control ratio value, that is, obtain
Performed to time interval；
S4：Corresponding magnitude of voltage is exported to three fast blower fans to adjust the air output of fan coil according to blast velocity control parameter,
Difference according to new water valve control ratio value and current water valve control ratio value is calculated the opening and closing duration of water valve.
Above-mentioned steps S2 and S3 are the calculation process for carrying out Adaptive PID Control algorithm, and temperature control parameter is according to difference
The temperature difference regulation adaptive change after, single-chip microcomputer by blast velocity control parameter and floating-point valve control ratio value issue air-blower control loop
With water valve control loop, synergic adjustment control blower fan wind speed and floating-point valve opening.Meanwhile, single-chip microcomputer can run according to fan coil
What parameter carried out coil pipe uses cooling metering.The step of S2 and S3, can sequentially be exchanged, or two steps are carried out simultaneously.The present invention
Adaptive PID Control algorithm carry out parameters revision by substantial amounts of data on the basis of conventional pid algorithm, its parameter root
Adjusted according to the change real-time adaptive of data.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the protection domain of the claims in the present invention
Within.
Claims (10)
1. fan coil adaptive power conservation control device, is applied to fan coil, it is characterised in that including control circuit, operation
Panel, detection unit, air-blower control loop and water valve control loop, the detection unit include return air temperature sensor and air-supply
Temperature sensor, the guidance panel, return air temperature sensor and wind pushing temperature sensor are all connected with controlling the input of circuit,
Air-blower control loop and water valve control loop are all connected with controlling the output end of circuit, control circuit connection backstage center；It is described
Control circuit is used for according to the design temperature from guidance panel, the return air temperature from return air temperature sensor transmission, comes from
The wind pushing temperature that wind pushing temperature sensor sends outputs control signals to air-blower control loop after being processed and water valve is controlled back
Road, to adjust the air output of fan coil and the opening and closing duration of water valve.
2. fan coil adaptive power conservation control device as claimed in claim 1, it is characterised in that the wind pushing temperature sensing
Device and return air temperature sensor are NTC10K type negative tempperature coefficient thermistor sensors.
3. fan coil adaptive power conservation control device as claimed in claim 1, it is characterised in that the air-blower control loop
It is three fast blower fans.
4. fan coil adaptive power conservation control device as claimed in claim 1, it is characterised in that the water valve control loop
It is tri-state floating-point valve.
5. fan coil adaptive power conservation control device as claimed in claim 1, it is characterised in that the control circuit includes
Voltage stabilizing chip, single-chip microcomputer and memory, the input connection external power source of voltage stabilizing chip, output end connect the power supply of single-chip microcomputer
End, memory connection single-chip microcomputer.
6. fan coil adaptive power conservation control device as claimed in claim 5, it is characterised in that the type of the voltage stabilizing chip
Number be AS1117-3.3, the model STM32F051C4 of the single-chip microcomputer, the model FM24C08 of the memory.
7. fan coil adaptive power conservation control device as claimed in claim 6, it is characterised in that the air-blower control loop
Single-chip microcomputer is connected by a relay driver with water valve control loop.
8. fan coil adaptive power conservation control device as claimed in claim 7, it is characterised in that the relay driver
Model ULN2003.
9. fan coil adaptive power conservation control device as claimed in claim 8, it is characterised in that the air-blower control loop
Including three fast blower fans, relay S1, relay S2 and relay S3, the relay S1, relay S2 and relay S3's is defeated
Go out end to be connected with three fast blower fans, the input of relay S1, relay S2 and relay S3 is all connected with relay driver.
10. fan coil self-adapting energy-saving control method, it is characterised in that be applied to the control circuit described in claim 1, wraps
Include following steps：
S1：The design temperature of user input is received, indoor temperature is constantly detected, and by return air temperature sensor and wind pushing temperature
Sensor constantly obtains return air temperature and wind pushing temperature respectively；
S2：According to the difference of current indoor temperature and design temperature, air rate adjustment range parameter and air rate adjustment interval ginseng are obtained
Count, and the continuous indoor temperature for obtaining is carried out into physical modeling and obtain indoor temperature model, according to the indoor temperature Modifying model
Air rate adjustment range parameter and air rate adjustment spacing parameter, are spaced according to revised air rate adjustment range parameter and air rate adjustment
Parameter is calculated blast velocity control parameter；
S3：According to return air temperature and the difference of wind pushing temperature, water valve adjustment range parameter and water valve adjustment spacing parameter are obtained, and will
The return air temperature that constantly obtains and send point temperature to carry out physical modeling respectively to obtain return air temperature model and wind pushing temperature model, root
According to return air temperature model and point temperature model amendment water valve adjustment range parameter and water valve is sent to adjust spacing parameter, after amendment
Water valve adjustment range parameter and water valve adjustment spacing parameter be calculated new water valve control ratio value；
S4：Corresponding magnitude of voltage is exported to three fast blower fans to adjust the air output of fan coil according to blast velocity control parameter, according to
New water valve control ratio value and the difference of current water valve control ratio value are calculated the opening and closing duration of water valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710170750.7A CN106705390A (en) | 2017-03-21 | 2017-03-21 | Fan coil self-adaptive energy saving control device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710170750.7A CN106705390A (en) | 2017-03-21 | 2017-03-21 | Fan coil self-adaptive energy saving control device and method |
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| CN106705390A true CN106705390A (en) | 2017-05-24 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108534302A (en) * | 2018-06-12 | 2018-09-14 | 广州市天园科技有限公司 | The fan coil adaptive power conservation dehumidifying controller of solenoid valve control |
| CN108679801A (en) * | 2018-06-12 | 2018-10-19 | 广州市天园科技有限公司 | Fan coil adaptive power conservation control valve |
| CN109059101A (en) * | 2018-06-12 | 2018-12-21 | 广州市天园科技有限公司 | The fan coil adaptive power conservation dehumidifying controller of floating-point valve control |
| CN109612051A (en) * | 2018-12-05 | 2019-04-12 | 新奥数能科技有限公司 | A kind of method and apparatus that air-conditioning system maintains leaving air temp to adjust air quantity |
| CN111207503A (en) * | 2020-02-25 | 2020-05-29 | 广东海悟科技有限公司 | Control method for heat exchange tail end fan and water valve, computer program medium and air conditioner |
| CN111750507A (en) * | 2019-03-27 | 2020-10-09 | 南京南瑞继保电气有限公司 | Air conditioner tail end wind and water linkage adjusting system and adjusting method |
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Application publication date: 20170524 |