CN201526483U - Variable speed control system for condensate fan - Google Patents

Variable speed control system for condensate fan Download PDF

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Publication number
CN201526483U
CN201526483U CN2009202110960U CN200920211096U CN201526483U CN 201526483 U CN201526483 U CN 201526483U CN 2009202110960 U CN2009202110960 U CN 2009202110960U CN 200920211096 U CN200920211096 U CN 200920211096U CN 201526483 U CN201526483 U CN 201526483U
Authority
CN
China
Prior art keywords
fan
condensation fan
pressure
condensate
frequency
Prior art date
Application number
CN2009202110960U
Other languages
Chinese (zh)
Inventor
臧建彬
王晓保
周巧莲
蔡明伟
刘叶弟
王晓东
Original Assignee
同济大学
上海申通轨道交通研究咨询有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 同济大学, 上海申通轨道交通研究咨询有限公司 filed Critical 同济大学
Priority to CN2009202110960U priority Critical patent/CN201526483U/en
Application granted granted Critical
Publication of CN201526483U publication Critical patent/CN201526483U/en

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Abstract

The utility model relates to a variable speed control system for a condensate fan. The control system is formed by a pressure transmitter, a PID adjuster, the condensate fan and a frequency converter, wherein the pressure transmitter is used for measuring inlet pressure of a condenser, an output end of the pressure transmitter is connected with the PID adjuster; an output end of the PID adjuster is connected with the frequency changer; and an output end of the frequency converter is connected with a motor of the condensate fan. The variable speed control system for the condensate fan is capable of conducting stepless frequency conversion speed regulation for the condensate fan through automatic control function, and controlling condensate pressure within a reasonable range, thereby prolonging the service life of the fan, ensuring safe and steady running of a refrigerating system, and further producing good energy-saving effect.

Description

The condensation fan change control system
Technical field
The utility model relates to a kind of condensation fan change control system that is used for the air-cooled air conditioner cooling machine set, relates in particular to a kind of condensation fan change control system based on the condensation fan variable-frequency control technique.
Background technique
For the air conditioner refrigerating unit that adopts air cooled condenser, condensing pressure can change along with the variation of ambient temperature.Condensing pressure raises, and will the exhaust pressure of refrigeration compressor be raise, and pressure ratio increases, thereby causes the gas transmission coefficient of compressor to reduce, and power consumption increases, and coefficient of refrigeration descends, and the rate of fault of compressor increases, and the safety reliability of operation reduces.For the air conditioner refrigerating unit of whole year operation, the higher phenomenon of condensing pressure mainly appears at summer, but the phenomenon of air conditioner refrigerating unit standard design operating mode generally can not occur being higher than for a long time; And when outdoor environment temperature is lower than the standard design operating mode, particularly during winter operation, condensing pressure phenomenon on the low side will appear, cause expansion valve before and after pressure reduction diminish, cause the fluid supply capacity deficiency, vaporizer lacks liquid, system's refrigerating capacity descends significantly.Present existing condensation pressure control method mainly contains by air quantity valve regulation cooling air delivery, the operating number that changes condensation fan and condensation fan variable frequency regulating speed control etc.The air quantity valve regulation is to keep blower fan to decide the rotating speed operation, easily wastes electric energy, shortens the life-span of blower fan; Change the occasion that condensation fan operation platform number is applicable to many typhoons machine, can cause that also the blower fan start and stop are frequent, the phenomenon that the condensing pressure fluctuation is big; The condensation fan variable frequency regulating speed control can be passed through the output that realizes different air quantity is regulated in the motor stepless change, and saving power.But what application was more in present domestic air-conditioning and the cooling machine set is preceding two kinds of methods, does not see patent or concrete application the based on the condensation fan change control system of condensation fan variable-frequency control technique at home as yet.ALCO series FSF and FSO type condensation fan frequency control of motor speed product that U.S. Emerson company produces adopt the oblique line controlling method, can not be applicable to various air conditioner refrigerating units; And when condensing pressure dropped to a certain degree, condensation fan kept constant-speed operation (being equivalent to 50% power frequency rotating speed) or closes down, and failed to realize the speed regulating control that 0~50Hz gamut is interior.
Summary of the invention
The purpose of this utility model is in order to overcome the defective that above-mentioned prior art exists, a kind of condensation fan change control system to be provided, be used to save fan energy consumption, guaranteeing that the air conditioner refrigerating unit moves safely and steadly.
The condensation fan change control system that the utility model proposed, form by PID regulator 1, frequency variator 2, condensation fan 3 and pressure transmitter 4, wherein: pressure transmitter 4 is connected to the condenser inlet place, is used to measure the inlet pressure of condenser, and its output terminal is connected with PID regulator 1; The output terminal of PID regulator 1 is connected with frequency variator 2; The output terminal of frequency variator 2 is connected with the motor of condensation fan 3; By automatic control action, condensation fan 3 can move in stepless change, changes cooling air delivery, thus the control condensing pressure.
In the utility model, the output terminal of described frequency variator 2 is connected with the general power of the motor of one or more condensation fan 3, thereby to the frequency control of motor speed simultaneously of one or more condensation fan, reduces the start-stop time of condensation fan.
In the utility model, described pressure transmitter is used to measure the condensing pressure at condenser inlet place, and posts a letter to the PID regulator.
In the utility model, described PID regulator compares signal and the condensing pressure setting value that pressure transmitter sends, and controls the output signal of frequency variator then according to deviation.
In the utility model, described condensing pressure setting value can be set according to the actual conditions and the design conditions of air-conditioning refrigeration system, pairing saturated refrigerant pressure in the time of generally can being set at than high 10~15 ℃ of outdoor design temperature.
In the utility model, described P, I, D parameter can be obtained from adjusting by the PID regulator in unit running process after the PID regulator is installed to the air conditioner refrigerating unit, then can carry out parameter adjustment artificially according to actual conditions.
In the utility model, described frequency variator is according to the frequency of input signal after the motor output of condensation fan is regulated of PID regulator, and frequency-tuning range is 0~50Hz.
In the utility model, described frequency variator carries out stepless change according to the output signal of PID regulator to condensation fan to be regulated, and then regulates the flow of cooling air.
Compare with product with prior art, the utility model selects for use condensing pressure to post a letter than posting a letter more accurately and reliably by condensing temperature.The system that is made up of pressure transmitter, PID regulator and frequency variator can realize the automatic control process of condensing pressure.The condensation fan Control of Frequency Control Process not only can reasonably be controlled condensing pressure, can also prolong the life-span of blower fan, and the assurance refrigeration system is moved safely and steadly, and produces good energy-saving effect.The utility model can be widely used in various air-cooled air conditioner refrigeration systems, and can and adjust the condensing pressure setting value according to the flexible selection control spare of the actual conditions of each system.
Description of drawings
Fig. 1 is a condensation fan change control system structural representation of the present utility model.
Number in the figure: 1 is the PID regulator, and 2 is frequency variator, and 3 is condensation fan, and 4 is pressure transmitter.
Embodiment
Further specify the utility model in conjunction with the accompanying drawings below by embodiment.
The condensation fan change control system of 1: one freezer of embodiment, as shown in Figure 1, native system is made up of PID regulator 1, frequency variator 2, condensation fan 3 and pressure transmitter 4, pressure transmitter 4 is connected to the condenser inlet place, be used to measure the inlet pressure of condenser, its output terminal is connected with PID regulator 1; The output terminal of PID regulator 1 is connected with frequency variator 2; The output terminal of frequency variator 2 is connected with the motor of condensation fan 3; By automatic control action, condensation fan can move in stepless change, changes cooling air delivery, thus the control condensing pressure.Wherein, PID regulator 1 adopts G2-16-2500-V2/EV1-A1//V2/-A1 type Transmit adjuster, frequency variator 2 adopts HLPA03D743B type frequency variator, and pressure transmitter 4 adopts the anti-electromagnetic radio frequency of MSP-400-030-B-5-W-X type to disturb the stainless steel pressure sensor.

Claims (2)

1. condensation fan change control system, form by PID regulator (1), frequency variator (2), condensation fan (3) and pressure transmitter (4), it is characterized in that pressure transmitter (4) is connected to the condenser inlet place, its output terminal is connected with PID regulator (1); The output terminal of PID regulator (1) is connected with frequency variator (2); The output terminal of frequency variator (2) is connected with the motor of condensation fan (3).
2. condensation fan change control system according to claim 1 is characterized in that the output terminal of described frequency variator (2) is connected with the general power of the motor of one or more condensation fan (3).
CN2009202110960U 2009-10-22 2009-10-22 Variable speed control system for condensate fan CN201526483U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202110960U CN201526483U (en) 2009-10-22 2009-10-22 Variable speed control system for condensate fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009202110960U CN201526483U (en) 2009-10-22 2009-10-22 Variable speed control system for condensate fan

Publications (1)

Publication Number Publication Date
CN201526483U true CN201526483U (en) 2010-07-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009202110960U CN201526483U (en) 2009-10-22 2009-10-22 Variable speed control system for condensate fan

Country Status (1)

Country Link
CN (1) CN201526483U (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103727625A (en) * 2012-10-10 2014-04-16 珠海格力电器股份有限公司 Method and device for controlling starting of variable-frequency fan of condensing unit
CN103925755A (en) * 2013-01-16 2014-07-16 珠海格力电器股份有限公司 Running control method for fan group at condensing side of refrigeration system
CN104006486A (en) * 2013-02-22 2014-08-27 珠海格力电器股份有限公司 Method and device for controlling running of condensing unit frequency conversion fan
CN104456858A (en) * 2013-09-12 2015-03-25 同方人工环境有限公司 Condensate fan control device of annual refrigerating set
CN104896626A (en) * 2014-03-07 2015-09-09 珠海格力电器股份有限公司 Refrigeration control method of air-cooled chiller unit, control device and unit system
CN105508279A (en) * 2016-01-14 2016-04-20 合肥天鹅制冷科技有限公司 Condensate fan with multi-air-speed function
CN105605747A (en) * 2016-03-10 2016-05-25 青岛大学 Automatic control device of cooling air quantity of outdoor condenser
CN105758076A (en) * 2016-03-10 2016-07-13 青岛大学 Automatic control method of air cooling volume of outdoor condenser
CN105972896A (en) * 2016-05-24 2016-09-28 深圳市英维克科技股份有限公司 Control method for refrigerating system
CN108005936A (en) * 2017-11-07 2018-05-08 珠海格力电器股份有限公司 Blower control method and device
CN110030777A (en) * 2019-03-14 2019-07-19 刘明生 A kind of control method for realizing best condensing pressure

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103727625A (en) * 2012-10-10 2014-04-16 珠海格力电器股份有限公司 Method and device for controlling starting of variable-frequency fan of condensing unit
CN103925755A (en) * 2013-01-16 2014-07-16 珠海格力电器股份有限公司 Running control method for fan group at condensing side of refrigeration system
CN103925755B (en) * 2013-01-16 2016-06-08 珠海格力电器股份有限公司 Refrigeration system condensation side blower fan group method for controlling of operation
CN104006486B (en) * 2013-02-22 2019-02-05 珠海格力电器股份有限公司 Condense unit frequency conversion fan progress control method and control device
CN104006486A (en) * 2013-02-22 2014-08-27 珠海格力电器股份有限公司 Method and device for controlling running of condensing unit frequency conversion fan
CN104456858A (en) * 2013-09-12 2015-03-25 同方人工环境有限公司 Condensate fan control device of annual refrigerating set
CN104896626A (en) * 2014-03-07 2015-09-09 珠海格力电器股份有限公司 Refrigeration control method of air-cooled chiller unit, control device and unit system
CN105508279A (en) * 2016-01-14 2016-04-20 合肥天鹅制冷科技有限公司 Condensate fan with multi-air-speed function
CN105758076A (en) * 2016-03-10 2016-07-13 青岛大学 Automatic control method of air cooling volume of outdoor condenser
CN105605747A (en) * 2016-03-10 2016-05-25 青岛大学 Automatic control device of cooling air quantity of outdoor condenser
CN105972896A (en) * 2016-05-24 2016-09-28 深圳市英维克科技股份有限公司 Control method for refrigerating system
CN105972896B (en) * 2016-05-24 2018-05-08 深圳市英维克科技股份有限公司 A kind of control method of refrigeration system
CN108005936A (en) * 2017-11-07 2018-05-08 珠海格力电器股份有限公司 Blower control method and device
CN110030777A (en) * 2019-03-14 2019-07-19 刘明生 A kind of control method for realizing best condensing pressure

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100714

Termination date: 20121022