CN104456855A - Concentrated air conditioner distribution type cooling draught fan controller - Google Patents
Concentrated air conditioner distribution type cooling draught fan controller Download PDFInfo
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- CN104456855A CN104456855A CN201410815305.8A CN201410815305A CN104456855A CN 104456855 A CN104456855 A CN 104456855A CN 201410815305 A CN201410815305 A CN 201410815305A CN 104456855 A CN104456855 A CN 104456855A
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F11/62—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
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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
- F24F11/62—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
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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)
- Control Of Electric Motors In General (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a concentrated air conditioner distribution type cooling draught fan controller which comprises a power supply circuit and a single-chip microcomputer. The power supply circuit supplies 5 V voltage. A chip STM8S208MB is adopted for the single-chip microcomputer. A process parameter collection module and an isolation CAN circuit are electrically connected to the single-chip microcomputer. An environment parameter collection module is connected to the single-chip microcomputer through a 485 circuit. A draught fan protection circuit interacts with the single-chip microcomputer through a TTL data signal. An electricity quality collection module is connected with the single-chip microcomputer through an SPI bus. An output module comprises a D/A chip and a V/I conversion circuit. The input end of the D/A chip is connected with the single-chip microcomputer. The output end of the D/A chip is connected with the input end of the V/I conversion circuit. The concentrated air conditioner distribution type cooling draught fan controller is low in cost, the rotating speed of a draught fan can be adjusted according to process parameters and environment parameters, the running condition of the draught fan can be detected in real time, and safe and reliable work of the draught fan is protected.
Description
Technical field
The present invention relates to central air-conditioning control field, specifically the distributed cooling blower controller of a kind of central air conditioning.
Background technology
In central air-conditioning water-cooled unit, recirculated cooling water is used to be one of the most frequently used method.In order to make warmed-up water cooling down again in unit, again recycling, often using cooling tower.The features such as blower fan is the critical component of mechanical-draft cooling tower, usually all adopts outdoor vertical Special motor for cooling tower, has efficiency high, power consumptive province, and water resistance is good.Water is when cooling tower drips, and cooling blower makes it to contact more fully with air, transfers heat to surrounding air, water temperature is lowered.Place capacity due to cooling tower is according to selected under the condition of maximum heat load in summer, namely consider extreme conditions, but in physical device runs, it is often be in run compared with when low thermal load that the factors such as equivalent heat load due to season, weather, workload all determines unit equipment, the power consumption waste causing cooling tower unnecessary.Meanwhile, because blower fan is in operating condition for a long time, therefore need Real-Time Monitoring fan condition, improve blower fan maintainability and stability.
Summary of the invention
The invention provides the distributed cooling blower controller of a kind of central air conditioning, not only according to technological parameter and ambient parameter adjustment rotation speed of fan, and can detect the operational situation of blower fan in real time, protect fan safe, work reliably.
The present invention is by the following technical solutions: the distributed cooling blower controller of central air conditioning, comprise power circuit, single-chip microcomputer, technological parameter acquisition module, ambient parameter acquisition module, isolated can circuit, blower fan protection circuit, electric quantity acquisition circuit and output module, described power circuit supply 5V voltage, described single-chip microcomputer is chip STM8S208MB, described technological parameter acquisition module and isolated can circuit are electrically connected on single-chip microcomputer, described ambient parameter acquisition module is connected on single-chip microcomputer by 485 circuit, described blower fan protection circuit by TTL data-signal and single-chip microcomputer mutual, described electric quantity acquisition module is connected with single-chip microcomputer volume by spi bus, described output module comprises D/A chip and V/I change-over circuit, the input of described D/A chip connects single-chip microcomputer, the output of described D/A chip connects V/I change-over circuit input.
Preferably, described electric quantity acquisition module utilizes chip ATT7022 as acquisition chip.
Preferably, described D/A chip is TLV5616.
Further, described blower fan protection circuit comprises chip NE556, first pin of chip NE556 connects chip NE556 second pin and the 6th pin by resistance R5, 6th pin of chip NE556 is by electric capacity C2 ground connection, chip NE556 the 3rd pin connects Zener diode D2 negative pole, Zener diode D2 plus earth, chip NE556 first pin connects the mobile terminal of slide rheostat R2 by resistance R4, a stiff end of slide rheostat R2 is by resistance R3 ground connection, another stiff end contact resistance R1 one end of slide rheostat R2, the resistance R1 other end connects diode D1 negative pole and electric capacity C1 one end respectively, electric capacity C1 other end ground connection, diode D1 positive pole connects an output of current transformer, another output head grounding of current transformer, 4th pin of chip NE556, tenth pin is all connected 12V voltage with the 14 pin, 12V voltage is by electric capacity C7 ground connection, resistance R16 mono-termination 12V voltage, the positive pole of resistance R16 other end sending and receiving optical diode LED2, the negative pole of Light-Emitting Diode LED2 connects one end of chip NE556 the 5th pin and slide rheostat R12 respectively, slide rheostat R12 other end connecting resistance R11 one end, another terminating diode of resistance R11 D8 negative pole, diode D8 positive pole connects Zener diode D7 negative pole respectively, chip NE556 the 8th pin, chip NE556 the 12 pin, Zener diode D7 plus earth, diode D3 positive pole connects an output of voltage transformer pt 1, diode D3 negative pole connects electric capacity C3 one end and resistance R6 one end respectively, the electric capacity C3 other end connects another output of voltage transformer pt 1 and triode Q1 emitter stage respectively, another termination triode of resistance R6 Q1 base stage, triode Q1 colelctor electrode connects 12V voltage, triode Q1 emitter stage connects triode Q2 colelctor electrode, triode Q2 base stage connecting resistance R7 one end, the resistance R7 other end connects electric capacity C4 one end and diode D4 negative pole respectively, diode D4 positive pole connects voltage transformer pt 2 one outputs, the electric capacity C4 other end connects another output of voltage transformer pt 2 and triode Q2 emitter stage respectively, triode Q2 emitter stage connects triode Q3 colelctor electrode, triode Q3 base stage connecting resistance R8 one end, another terminating diode of resistance R8 D5 negative pole, diode D5 positive pole connects voltage transformer pt 3 one outputs, electric capacity C5 mono-terminating diode D5 negative pole, the electric capacity C5 other end connects another output of voltage transformer RT3 and triode Q3 emitter stage respectively, triode Q3 emitter stage is by resistance R10 ground connection, triode Q3 emitter stage is contact resistance R9 one end and diode D6 negative pole respectively, the resistance R9 other end connects Light-Emitting Diode LED1 negative pole, Light-Emitting Diode LED1 positive pole connects 12V voltage, diode D6 positive pole connects electric capacity C6 one end and chip NE556 the 8th pin respectively, another termination 12V voltage of electric capacity C6, diode D6 puts into negative pole and connects single-chip microcomputer by resistance R13, 5th pin of chip NE556 connects single-chip microcomputer by resistance R15, chip NE556 the 9th pin connects single-chip microcomputer by resistance R14.
The invention has the beneficial effects as follows:
1, devise technological parameter acquisition module and environment acquisition module, the rotating speed according to technological requirement and the controlled cooling model such as ambient parameter, historical data blower fan adjusts in real time, can save energy and is about 30%, have significant energy-saving benefit.
2, electric quantity acquisition circuit adopts professional chip ATT7022 to gather, and can gather multi-channel electrical parameter simultaneously.
3, blower fan protection circuit mainly checks the overcurrent of blower fan; open-phase protection; realize blower fan defencive function; because blower fan is in operation process; comparatively large by ectocine, devise guard time regulatory function, delay protection can be carried out according to the applicable cases at scene; the on-the-spot each project of power of fan is not quite similar, and devises protection limitation function.Can be connected with single-chip microcomputer simultaneously, realize remote monitoring, advantage, adopt and reasonably design, defencive function is complete, antijamming capability is higher.Peripheral components is less, realizes cost simple, possesses situ configuration regulatory function.
Accompanying drawing explanation
Fig. 1 is theory structure block diagram of the present invention;
Fig. 2 is the schematic diagram of blower fan protection circuit of the present invention.
Detailed description of the invention
The distributed cooling blower controller of central air conditioning as shown in Figure 1, comprises power circuit, single-chip microcomputer, technological parameter acquisition module, ambient parameter acquisition module, isolated can circuit, blower fan protection circuit, electric quantity acquisition circuit and output module.
Described power circuit is controller supply 5V voltage, described single-chip microcomputer is chip STM8S208MB, described technological parameter acquisition module and isolated can circuit are electrically connected on single-chip microcomputer, described ambient parameter acquisition module is connected on single-chip microcomputer by 485 circuit, described blower fan protection circuit by TTL data-signal and single-chip microcomputer mutual, described electric quantity acquisition module is connected with single-chip microcomputer volume by spi bus, described output module comprises D/A chip and V/I change-over circuit, the input of described D/A chip connects single-chip microcomputer, the output of described D/A chip connects V/I change-over circuit input.Wherein, described electric quantity acquisition module utilizes chip ATT7022 as acquisition chip, and described D/A chip is TLV5616.
During use, isolated can circuit is connected with core controller, realize with the director data of core controller mutual, the DataBase combining of the data such as technological parameter acquisition module and recording process requirement, obtain technological parameter data, ambient parameter acquisition module connects the sensor such as pressure, humiture being arranged in the external world, obtain the parameter of external environment, these parameters all can pass to core controller and carry out analyzing, processing, and then the instruction that core controller feeds back is sent to blower fan by output module by single-chip microcomputer.
In above process, electric quantity acquisition circuit major function for realization to the blower fan of cooling tower that controller controls with adding up and the monitoring of electrical quantity.This main circuit will adopt professional chip ATT7022 to gather, and the electrical quantity of collection is more, and outer net devises accurate voltage collection circuit, realizes precise acquisition and statistics.Devise transformer in current collection circuit, achieve isolation, effectively avoid interference.Collection terminal devises clamp circuit, effectively avoids high pressure crushing bad acquisition chip.
As shown in Figure 2, described blower fan protection circuit comprises chip NE556, first pin of chip NE556 connects chip NE556 second pin and the 6th pin by resistance R5, 6th pin of chip NE556 is by electric capacity C2 ground connection, chip NE556 the 3rd pin connects Zener diode D2 negative pole, Zener diode D2 plus earth, chip NE556 first pin connects the mobile terminal of slide rheostat R2 by resistance R4, a stiff end of slide rheostat R2 is by resistance R3 ground connection, another stiff end contact resistance R1 one end of slide rheostat R2, the resistance R1 other end connects diode D1 negative pole and electric capacity C1 one end respectively, electric capacity C1 other end ground connection, diode D1 positive pole connects an output of current transformer, another output head grounding of current transformer, 4th pin of chip NE556, tenth pin is all connected 12V voltage with the 14 pin, 12V voltage is by electric capacity C7 ground connection, resistance R16 mono-termination 12V voltage, the positive pole of resistance R16 other end sending and receiving optical diode LED2, the negative pole of Light-Emitting Diode LED2 connects one end of chip NE556 the 5th pin and slide rheostat R12 respectively, slide rheostat R12 other end connecting resistance R11 one end, another terminating diode of resistance R11 D8 negative pole, diode D8 positive pole connects Zener diode D7 negative pole respectively, chip NE556 the 8th pin, chip NE556 the 12 pin, Zener diode D7 plus earth, diode D3 positive pole connects an output of voltage transformer pt 1, diode D3 negative pole connects electric capacity C3 one end and resistance R6 one end respectively, the electric capacity C3 other end connects another output of voltage transformer pt 1 and triode Q1 emitter stage respectively, another termination triode of resistance R6 Q1 base stage, triode Q1 colelctor electrode connects 12V voltage, triode Q1 emitter stage connects triode Q2 colelctor electrode, triode Q2 base stage connecting resistance R7 one end, the resistance R7 other end connects electric capacity C4 one end and diode D4 negative pole respectively, diode D4 positive pole connects voltage transformer pt 2 one outputs, the electric capacity C4 other end connects another output of voltage transformer pt 2 and triode Q2 emitter stage respectively, triode Q2 emitter stage connects triode Q3 colelctor electrode, triode Q3 base stage connecting resistance R8 one end, another terminating diode of resistance R8 D5 negative pole, diode D5 positive pole connects voltage transformer pt 3 one outputs, electric capacity C5 mono-terminating diode D5 negative pole, the electric capacity C5 other end connects another output of voltage transformer RT3 and triode Q3 emitter stage respectively, triode Q3 emitter stage is by resistance R10 ground connection, triode Q3 emitter stage is contact resistance R9 one end and diode D6 negative pole respectively, the resistance R9 other end connects Light-Emitting Diode LED1 negative pole, Light-Emitting Diode LED1 positive pole connects 12V voltage, diode D6 positive pole connects electric capacity C6 one end and chip NE556 the 8th pin respectively, another termination 12V voltage of electric capacity C6, diode D6 puts into negative pole and connects single-chip microcomputer by resistance R13, 5th pin of chip NE556 connects single-chip microcomputer by resistance R15, chip NE556 the 9th pin connects single-chip microcomputer by resistance R14.
Blower fan protection circuit mainly completes to be protected blower fan of cooling tower; the overcurrent of main inspection blower fan; open-phase protection; realize blower fan defencive function, because blower fan is in operation process, larger by ectocine; devise guard time regulatory function; can carry out delay protection according to the applicable cases at scene, the on-the-spot each project of power of fan is not quite similar, and devises protection limitation function.Can be connected with single-chip microcomputer simultaneously, realize remote monitoring, advantage, adopt and reasonably design, defencive function is complete, antijamming capability is higher.Peripheral components is less, realizes cost simple, possesses situ configuration regulatory function.
Except structure of the present invention, all the other are prior art.
The above is the preferred embodiment of the present invention, and for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also regarded as protection scope of the present invention.
Claims (4)
1. the distributed cooling blower controller of central air conditioning, it is characterized in that, comprise power circuit, single-chip microcomputer, technological parameter acquisition module, ambient parameter acquisition module, isolated can circuit, blower fan protection circuit, electric quantity acquisition circuit and output module, described power circuit supply 5V voltage, described single-chip microcomputer is chip STM8S208MB, described technological parameter acquisition module and isolated can circuit are electrically connected on single-chip microcomputer, described ambient parameter acquisition module is connected on single-chip microcomputer by 485 circuit, described blower fan protection circuit by TTL data-signal and single-chip microcomputer mutual, described electric quantity acquisition module is connected with single-chip microcomputer volume by spi bus, described output module comprises D/A chip and V/I change-over circuit, the input of described D/A chip connects single-chip microcomputer, the output of described D/A chip connects V/I change-over circuit input.
2. the distributed cooling blower controller of central air conditioning according to claim 1, is characterized in that, described electric quantity acquisition module utilizes chip ATT7022 as acquisition chip.
3. the distributed cooling blower controller of central air conditioning according to claim 1, is characterized in that, described D/A chip is TLV5616.
4. the distributed cooling blower controller of the central air conditioning according to claim 1-3 any one, it is characterized in that, described blower fan protection circuit comprises chip NE556, first pin of chip NE556 connects chip NE556 second pin and the 6th pin by resistance R5, 6th pin of chip NE556 is by electric capacity C2 ground connection, chip NE556 the 3rd pin connects Zener diode D2 negative pole, Zener diode D2 plus earth, chip NE556 first pin connects the mobile terminal of slide rheostat R2 by resistance R4, a stiff end of slide rheostat R2 is by resistance R3 ground connection, another stiff end contact resistance R1 one end of slide rheostat R2, the resistance R1 other end connects diode D1 negative pole and electric capacity C1 one end respectively, electric capacity C1 other end ground connection, diode D1 positive pole connects an output of current transformer, another output head grounding of current transformer, 4th pin of chip NE556, tenth pin is all connected 12V voltage with the 14 pin, 12V voltage is by electric capacity C7 ground connection, resistance R16 mono-termination 12V voltage, the positive pole of resistance R16 other end sending and receiving optical diode LED2, the negative pole of Light-Emitting Diode LED2 connects one end of chip NE556 the 5th pin and slide rheostat R12 respectively, slide rheostat R12 other end connecting resistance R11 one end, another terminating diode of resistance R11 D8 negative pole, diode D8 positive pole connects Zener diode D7 negative pole respectively, chip NE556 the 8th pin, chip NE556 the 12 pin, Zener diode D7 plus earth, diode D3 positive pole connects an output of voltage transformer pt 1, diode D3 negative pole connects electric capacity C3 one end and resistance R6 one end respectively, the electric capacity C3 other end connects another output of voltage transformer pt 1 and triode Q1 emitter stage respectively, another termination triode of resistance R6 Q1 base stage, triode Q1 colelctor electrode connects 12V voltage, triode Q1 emitter stage connects triode Q2 colelctor electrode, triode Q2 base stage connecting resistance R7 one end, the resistance R7 other end connects electric capacity C4 one end and diode D4 negative pole respectively, diode D4 positive pole connects voltage transformer pt 2 one outputs, the electric capacity C4 other end connects another output of voltage transformer pt 2 and triode Q2 emitter stage respectively, triode Q2 emitter stage connects triode Q3 colelctor electrode, triode Q3 base stage connecting resistance R8 one end, another terminating diode of resistance R8 D5 negative pole, diode D5 positive pole connects voltage transformer pt 3 one outputs, electric capacity C5 mono-terminating diode D5 negative pole, the electric capacity C5 other end connects another output of voltage transformer RT3 and triode Q3 emitter stage respectively, triode Q3 emitter stage is by resistance R10 ground connection, triode Q3 emitter stage is contact resistance R9 one end and diode D6 negative pole respectively, the resistance R9 other end connects Light-Emitting Diode LED1 negative pole, Light-Emitting Diode LED1 positive pole connects 12V voltage, diode D6 positive pole connects electric capacity C6 one end and chip NE556 the 8th pin respectively, another termination 12V voltage of electric capacity C6, diode D6 puts into negative pole and connects single-chip microcomputer by resistance R13, 5th pin of chip NE556 connects single-chip microcomputer by resistance R15, chip NE556 the 9th pin connects single-chip microcomputer by resistance R14.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410815305.8A CN104456855B (en) | 2014-12-25 | 2014-12-25 | Central air conditioning distribution cooling blower controller |
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| CN201410815305.8A CN104456855B (en) | 2014-12-25 | 2014-12-25 | Central air conditioning distribution cooling blower controller |
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| CN104456855A true CN104456855A (en) | 2015-03-25 |
| CN104456855B CN104456855B (en) | 2017-09-26 |
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Citations (7)
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|---|---|---|---|---|
| CN2109010U (en) * | 1991-11-13 | 1992-07-01 | 王治国 | Multifunctional protector for ac electric appliance equipment |
| CN2427772Y (en) * | 2000-05-17 | 2001-04-25 | 马进南 | Voltage type coil blower digital display type microcompterized controlling device |
| CN2689105Y (en) * | 2004-01-12 | 2005-03-30 | 广东新的科技集团有限公司 | Control system for outdoor unit of air cooling tubular air conditioner with several indoor units |
| CN200969052Y (en) * | 2006-11-03 | 2007-10-31 | 广州市特里安节能设备有限公司 | Central air-conditioning environment monitoring energy-saving apparatus |
| CN201075364Y (en) * | 2007-06-22 | 2008-06-18 | 郭将 | Multifunctional phase-interruption leakage circuit breaker for three-phase motor |
| CN203859497U (en) * | 2013-11-27 | 2014-10-01 | 昆明理工大学 | Anti-open phase, anti-over voltage, and anti-interference automatic protector for motor |
| CN204478384U (en) * | 2014-12-25 | 2015-07-15 | 李钢 | The distributed cooling blower controller of central air conditioning |
-
2014
- 2014-12-25 CN CN201410815305.8A patent/CN104456855B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2109010U (en) * | 1991-11-13 | 1992-07-01 | 王治国 | Multifunctional protector for ac electric appliance equipment |
| CN2427772Y (en) * | 2000-05-17 | 2001-04-25 | 马进南 | Voltage type coil blower digital display type microcompterized controlling device |
| CN2689105Y (en) * | 2004-01-12 | 2005-03-30 | 广东新的科技集团有限公司 | Control system for outdoor unit of air cooling tubular air conditioner with several indoor units |
| CN200969052Y (en) * | 2006-11-03 | 2007-10-31 | 广州市特里安节能设备有限公司 | Central air-conditioning environment monitoring energy-saving apparatus |
| CN201075364Y (en) * | 2007-06-22 | 2008-06-18 | 郭将 | Multifunctional phase-interruption leakage circuit breaker for three-phase motor |
| CN203859497U (en) * | 2013-11-27 | 2014-10-01 | 昆明理工大学 | Anti-open phase, anti-over voltage, and anti-interference automatic protector for motor |
| CN204478384U (en) * | 2014-12-25 | 2015-07-15 | 李钢 | The distributed cooling blower controller of central air conditioning |
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| CN104456855B (en) | 2017-09-26 |
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