CN105570110A - After-cooling control system and method of air compressor - Google Patents
After-cooling control system and method of air compressor Download PDFInfo
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- CN105570110A CN105570110A CN201410536914.XA CN201410536914A CN105570110A CN 105570110 A CN105570110 A CN 105570110A CN 201410536914 A CN201410536914 A CN 201410536914A CN 105570110 A CN105570110 A CN 105570110A
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- pid controller
- temperature
- air compressor
- control system
- preset temperature
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Abstract
The invention relates to an after-cooling control system and method of an air compressor. The after-cooling control system comprises multiple fans, a PID controller, a temperature sensor and an input unit. The fans supply air to an after-cooling cooler. The PID controller is provided with multiple input ends and multiple output ends and the output ends are connected with the fans. The temperature sensor is arranged at an air outlet of the after-cooling cooler, connected with the corresponding input end of the PID controller and used for sending the detected temperature to the PID controller. The input unit is connected with the corresponding input end of the PID controller and used for inputting the preset temperature and/or other design parameters to the PID controller. By the adoption of the after-cooling control system of the air compressor, compressed air of the compressor can be cooled more effectively.
Description
Technical field
The present invention relates to a kind of rear cold control system and controlling method of air compressor.
Background technique
The working principle of existing rear cold cooler is the attraction force utilizing cooling itself fan in air compressor, air compressor outside air is cooled the high temperature and high pressure gas in rear cold cooler as cooling medium, finally reach the object reducing compressed air temperature.But the performance of the rear cold cooler of air compressor is determined by the structural parameter of the parameter of cooling medium, cooled object and cooler, and the change of these parameters all can have influence on the performance of rear cold cooler.Lack cold control system and controlling method reasonably in prior art, cause the air outlet temperature of air compressor can not reach the requirement of setting.
The rear cold cooler of movable air compressor is carrying out designing according to the most exacting terms of air compressor when design often, design time usually all by larger for the design of the heat diffusion area of cooler, surplus coefficiert is higher, so boundary dimension is larger, and a cooler can only be applied in a type usually, if run into the machine that internal structure is compact, usually can only reduce performance requirement and even cannot use rear cold function.
Summary of the invention
The present invention is intended to solve the problems of the technologies described above, a kind of rear cold control system and controlling method of air compressor are provided, can control by the more effective rear cooling system to compressor, effectively giving vent to anger of air compressor is carried out the requirement making its air outlet temperature reach setting that cools and lower the temperature.
The present invention relates to a kind of rear cold control system of air compressor, comprise some fans, described fan is cold cooler air-supply backwards; PID controller, described PID controller has some input ends and some output terminals, and described output terminal is connected with described fan respectively; Temperature transducer, arrange the air outlet place of cold cooler in the rear, described temperature transducer is connected with the input end of described PID controller, for detected temperatures is sent to described PID controller; Input unit, described input unit is connected with described PID controller input end, for inputting preset temperature and other design parameters to described PID controller.
Preferably, also comprise display unit, described display unit is connected with described temperature transducer, for showing the parameter measured by described temperature transducer.
Preferably, described fan place is provided with wind scooper.
In addition, the invention still further relates to a kind of rear cooling control method of air compressor, there are following steps:
By input unit, preset temperature is inputted PID controller;
The true temperature that temperature transducer is recorded sends to PID controller;
True temperature and preset temperature compare by PID controller, if true temperature is higher than preset temperature, then and PID controller output pwm signal;
Pwm signal is sent to the rotating speed that fan is used for controlling fan by PID controller.
Preferably, the power of pwm signal that PID controller sends changes with the difference direct proportaion of true temperature and preset temperature.
Preferably, also comprise: true temperature and preset temperature compare by PID controller, if true temperature is lower than preset temperature, then PID controller stops output pwm signal.
Utilize rear cold control system and the controlling method of air compressor of the present invention, can more effectively control the rear cooling system of compressor.No matter and the change of environment and input cooler pressurized air parameter, also can keep air outlet temperature in setting range.
Accompanying drawing explanation
Fig. 1 is the structural representation of the rear cold control system of air compressor of the present invention.
Embodiment
Below, the rear cold control system of composition graphs 1 to air compressor of the present invention is described.
As shown in Figure 1, PID controller 11 produces pwm control signal by computing, and transfer to be arranged on air compressor after fan in cold control system, thus the switch of fan and rotating speed to be controlled.
In the present embodiment, input unit is keyboard 15, and keyboard 15 is connected with the input end of PID controller 11, and in the present embodiment, keyboard 15 is by preset temperature T0 and other parameters input PID controller 11.
The temperature transducer 12 being arranged on rear cold cooler air outlet place is connected with the input end of PID controller 11, for being sent in PID controller 11 by the true temperature T1 at rear cold cooler air outlet place.Also be provided with display unit 13 in the present embodiment, be connected with temperature transducer 12, for the value of the true temperature T1 measured by showing temperature sensor 12.
Power supply 14 is for powering to PID controller 11, fan, display unit 13 and keyboard 15.
In addition in the present embodiment, between each fan, be also provided with dividing plate, prevent from altering wind between fan, thus reach better cooling effect.Fan place is also provided with wind scooper.
High temperature compressed air enters from the suction port of rear cold cooler, flow through rear cold cooler, by the air-supply of some fans to rear cold cooler, after high temperature compressed air is lowered the temperature, flow out to aqueous vapor SEPARATOR OR SEAL CHAMBER or client's use gas end (not shown) from rear cold cooler air outlet.
Continue to be described with reference to the controlling method of Fig. 1 to the rear cold control system of the air compressor of the present embodiment, the controlling method of the present embodiment specifically comprises the following steps:
First, by keyboard 15, inputed to by preset temperature T0 in PID controller 11, the true temperature T1 at measured rear cold cooler air outlet place also inputs in PID controller by temperature transducer 12;
True temperature T1 and preset temperature T0 compares by PID controller 11, if true temperature is higher than preset temperature (T1>T0), then and PID controller 11 output pwm signal;
Pwm signal is sent to the rotating speed that fan is used for controlling fan by PID controller 11.
Along with the air-supply of fan, the air temperature flowing through rear cold cooler reduces gradually, namely true temperature T1 moves closer to preset temperature T0, the difference of the power of the pwm signal that PID controller 11 sends and true temperature T1 and preset temperature T0 is in direct ratio, the difference of true temperature T1 and preset temperature T0 is less, the pwm signal that PID controller 11 sends is more weak, thus the rotating speed of fan is lower.
When true temperature T1 is less than preset temperature T0, PID controller 11 no longer sends pwm signal, thus fan quits work.
Utilize rear cold control system and the controlling method of air compressor of the present invention, can effectively realize carrying out effectively for the fan cooled and reasonably controlling in air compressor, no matter how the pressurized air parameter of environment and input cooler changes, also can keep its temperature sky to be in setting range, the air compressor of various type can be applicable to, and in good time adjustment can be realized, energy saving.
Claims (6)
1. a rear cold control system for air compressor, comprises some fans, and described fan is cold cooler air-supply backwards, it is characterized in that, also comprises:
PID controller, described PID controller has some input ends and some output terminals, and described output terminal is connected with described fan respectively;
Temperature transducer, arrange the air outlet place of cold cooler in the rear, described temperature transducer is connected with the input end of described PID controller, for detected temperatures is sent to described PID controller;
Input unit, described input unit is connected with described PID controller input end, for inputting preset temperature and other design parameters to described PID controller.
2. the rear cold control system of air compressor as claimed in claim 1, it is characterized in that, also comprise display unit, described display unit is connected with described temperature transducer, for showing the parameter measured by described temperature transducer.
3. the rear cold control system of air compressor as claimed in claim 1, is characterized in that, described fan place is provided with wind scooper.
4. a rear cooling control method for air compressor, is characterized in that having following steps:
By input unit, preset temperature is inputted PID controller;
The true temperature that temperature transducer is recorded sends to PID controller;
True temperature and preset temperature compare by PID controller, if true temperature is higher than preset temperature, then and PID controller output pwm signal;
Pwm signal is sent to the rotating speed that fan is used for controlling fan by PID controller.
5. the rear cooling control method of air compressor as claimed in claim 4, is characterized in that, the power of the pwm signal that PID controller sends changes with the difference direct proportaion of true temperature and preset temperature.
6. the rear cooling control method of air compressor as claimed in claim 4, is characterized in that, also comprise: true temperature and preset temperature compare by PID controller, if true temperature is lower than preset temperature, then PID controller stops output pwm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410536914.XA CN105570110A (en) | 2014-10-11 | 2014-10-11 | After-cooling control system and method of air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410536914.XA CN105570110A (en) | 2014-10-11 | 2014-10-11 | After-cooling control system and method of air compressor |
Publications (1)
| Publication Number | Publication Date |
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| CN105570110A true CN105570110A (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410536914.XA Pending CN105570110A (en) | 2014-10-11 | 2014-10-11 | After-cooling control system and method of air compressor |
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| CN (1) | CN105570110A (en) |
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| CN1080018A (en) * | 1991-10-18 | 1993-12-29 | 塔奇斯顿有限公司 | The controlled cooling system of exhaust gas turbocharger internal combustion engine |
| WO2003083298A1 (en) * | 2002-03-28 | 2003-10-09 | Westport Research Inc. | Method and apparatus for compressing a gas to a high pressure |
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| JP2008128039A (en) * | 2006-11-17 | 2008-06-05 | Komatsu Ltd | Cooling fan driving control device |
| CN101936212A (en) * | 2010-09-02 | 2011-01-05 | 奇瑞汽车股份有限公司 | Vehicular two-stage inter-cooling device |
| CN102135029A (en) * | 2010-12-29 | 2011-07-27 | 三一汽车起重机械有限公司 | Crane and engine thermal management cooling device thereof |
| CN102187067A (en) * | 2008-10-29 | 2011-09-14 | 株式会社小松制作所 | Heat retention/cooling control device for pm filter device |
| CN102301112A (en) * | 2009-01-30 | 2011-12-28 | 株式会社小松制作所 | Engine output control device |
| CN102725529A (en) * | 2010-01-26 | 2012-10-10 | 纳博特斯克株式会社 | Air compression device for railroad vehicle |
| CN204312303U (en) * | 2014-10-11 | 2015-05-06 | 阿特拉斯·科普柯(无锡)压缩机有限公司 | The rear cold control system of air compressor |
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Patent Citations (10)
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|---|---|---|---|---|
| CN1080018A (en) * | 1991-10-18 | 1993-12-29 | 塔奇斯顿有限公司 | The controlled cooling system of exhaust gas turbocharger internal combustion engine |
| WO2003083298A1 (en) * | 2002-03-28 | 2003-10-09 | Westport Research Inc. | Method and apparatus for compressing a gas to a high pressure |
| CN1584334A (en) * | 2003-07-30 | 2005-02-23 | 株式会社神户制钢所 | Compressor |
| JP2008128039A (en) * | 2006-11-17 | 2008-06-05 | Komatsu Ltd | Cooling fan driving control device |
| CN102187067A (en) * | 2008-10-29 | 2011-09-14 | 株式会社小松制作所 | Heat retention/cooling control device for pm filter device |
| CN102301112A (en) * | 2009-01-30 | 2011-12-28 | 株式会社小松制作所 | Engine output control device |
| CN102725529A (en) * | 2010-01-26 | 2012-10-10 | 纳博特斯克株式会社 | Air compression device for railroad vehicle |
| CN101936212A (en) * | 2010-09-02 | 2011-01-05 | 奇瑞汽车股份有限公司 | Vehicular two-stage inter-cooling device |
| CN102135029A (en) * | 2010-12-29 | 2011-07-27 | 三一汽车起重机械有限公司 | Crane and engine thermal management cooling device thereof |
| CN204312303U (en) * | 2014-10-11 | 2015-05-06 | 阿特拉斯·科普柯(无锡)压缩机有限公司 | The rear cold control system of air compressor |
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