CN105758076A - Automatic control method of air cooling volume of outdoor condenser - Google Patents
Automatic control method of air cooling volume of outdoor condenser Download PDFInfo
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- CN105758076A CN105758076A CN201610134777.6A CN201610134777A CN105758076A CN 105758076 A CN105758076 A CN 105758076A CN 201610134777 A CN201610134777 A CN 201610134777A CN 105758076 A CN105758076 A CN 105758076A
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- air valve
- condensing pressure
- electric air
- electric
- signal
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/195—Pressures of the condenser
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention belongs to the technical field of the air cooling volume of refrigerating equipment, and relates to an automatic control method of an air cooling volume of an outdoor condenser. The control process comprises three portions, namely, electric signal conversion, exhaust air rate control of a variable-frequency fan and air inlet volume control of an electric air valve; the condensation pressure is transferred to a condensation pressure sensor via a condensation pressure capillary tube, the condensation pressure is converted by the condensation pressure sensor to an electric signal of voltage or current, a fan frequency converter transmits electric power to the two variable-frequency fans according to the electric signal and controls the working frequency and the rotation speed of the variable-frequency fans, the electric signal is transmitted to an electric air valve controller, the electric air valve controller transmits the electric power to an electric air valve electric actuator according to the electric signal so as to control the forward and backward rotation and an action ratio of the electric air valve electric actuator and to realize the linear control; the air inlet volume of the condenser can be automatically and linearly controlled, the control principle is scientific, the process is simple, the control precision is high, the energy consumption is low, the fault rate is low, the service life is long, and the control is reliable.
Description
Technical field:
The invention belongs to the cooling air quantity of refrigeration plant and control technical field, relate to the autocontrol method of a kind of outdoor condenser cooling air quantity, particularly a kind of method according to condensing pressure size, outdoor condenser cooling air quantity automatically controlled under the low temperature environment of outdoor pole.
Background technology:
At present, the outdoor condenser of the refrigeration plant such as industrial air-conditioning unit and freezer unit is usually the fin-tube heat exchanger with blower fan, and it is walked heat reduce condensation temperature by raising ventilating air temperature band.This heat exchange mode is in outdoor environment temperature relatively low season, heat exchange efficiency is higher, but when outdoor environment temperature is extremely low, because unit occurs that low-voltage variation affects operation on the contrary and produces, such as, under the industrial air-conditioning unit to outdoor environment heat extraction of whole year operation and freezer unit operating mode in the winter time, particularly when outdoor environment temperature processes the dew point temperature of air lower than unit, owing to outdoor inlet air temperature of condenser is too low, condensation temperature is made to be gradually lowered, so that condensing pressure reduces therewith, and condensing pressure reduction causes that evaporating pressure declines, unit refrigeration performance worsens, until unit self carries out low-voltage variation and shuts down, result not only affects the stability of unit ventilation temperature and humidity, and then affect air conditioner surroundings and plant produced in Factory Building, if things go on like this, air conditioning unit service life is also impacted.
For avoiding unit that low voltage failure occurs in the winter time, in prior art, its common practice is suitably to reduce intake volume to outdoor condenser parcel canvas, or the cooling blower quantity of work is increased or reduces by installing pressure controller additional, both approaches can prevent low voltage failure to a certain extent, but when outside air temperature changes, the method of parcel canvas needs to manually adjust wrapped air-admitting surface, reach to change the purpose of cooling air quantity, person works's amount is added because not being automatically adjusted, degree of regulation is difficult to ensure that simultaneously, and blower fan still power frequency operation, waste a large amount of electric energy；Install the pressure controller method to increase and decrease blower fan number additional, fan starting and stopped process easily cause the fluctuation of condensing pressure, have impact on stablizing of evaporating temperature, and frequent start-stop easily causes service life of fan and shortens, and is unfavorable for the operation steady in a long-term of unit.Therefore, seek to design the control method of a kind of outdoor condenser cooling air quantity, pressure in condenser is converted to the signal of telecommunication, ratio aperture and the intake of Electric air valve valve block is controlled by the signal of telecommunication, operating frequency and the rotating speed of frequency conversion fan is controlled by the signal of telecommunication, reaching to control the purpose of exhaust air rate, meet low air quantity operating mode and power conservation requirement, this technical scheme there is not yet report so far.
Summary of the invention:
It is an object of the invention to the shortcoming overcoming prior art to exist, the autocontrol method of a kind of outdoor condenser cooling air quantity of design is proposed, to solve to manually adjust that air-admitting surface workload is big, low precision and the big problem of power consumption, the problem solving to adopt the condensing pressure fluctuation caused in pressure controller increase and decrease working fan quantity process, evaporating temperature unstable and service life of fan shortens.
In order to realize foregoing invention purpose, the autocontrol method of the outdoor condenser cooling air quantity that the present invention relates to, realizing in air quantity automaton, its control process includes signal of telecommunication conversion, controls frequency conversion fan exhaust air rate and control Electric air valve intake three part, and concrete control process is:
(1) signal of telecommunication conversion: condenser liquid collecting mother's pipe internal condensation pressure is transferred to condensing pressure sensor by condensing pressure capillary tube, condensing pressure sensor condensing pressure is converted to voltage more than 0 less than 10V or electric current more than the 4mA signal of telecommunication less than 20mA, the signal of telecommunication of condensing pressure sensor increases along with the raising of condensing pressure, the signal of telecommunication of condensing pressure sensor reduces along with the reduction of condensing pressure, it is achieved the ratio of condensing pressure signal and the signal of telecommunication is changed；
(2) frequency conversion fan exhaust air rate is controlled: the signal of telecommunication that step (1) is changed is flowed to fan frequency converter by condensing pressure holding wire by condensing pressure sensor, electric energy after frequency-conversion processing is transferred on two frequency conversion fans respectively through two transducer power output leads by the signal of telecommunication that the fan frequency converter that power supply drives is changed according to step (1), then the operating frequency and the rotating speed that control frequency conversion fan increase along with the increase of step (1) converted electrical number, the operating frequency and the rotating speed that control frequency conversion fan reduce along with the reduction of step (1) converted electrical number, and then realize the exhaust air rate of Linear Control frequency conversion fan；
(3) Electric air valve intake is controlled: the signal of telecommunication that step (1) is changed is flowed to Electric air valve controller by condensing pressure holding wire by condensing pressure sensor, power frequency electric energy is sent to Electric air valve YE by Electric air valve controller power output lead by the signal of telecommunication that the Electric air valve controller that power supply drives is changed according to step (1), thus controlling rotating and the action ratio of Electric air valve YE, and then the aperture of Electric air valve valve block controlling to be arranged on casing of outdoor air inlet increases along with the increase of step (1) converted electrical number, the aperture of Electric air valve valve block reduces along with the reduction of step (1) converted electrical number, realize linearly automatically controlling of Electric air valve intake.
The agent structure of the air quantity automaton that the present invention relates to includes: condensing pressure sensor, fan frequency converter, frequency conversion fan, Electric air valve YE, Electric air valve valve block, Electric air valve controller, condenser liquid collecting mother pipe, Electric air valve controller power output lead, power frequency supply lines, casing of outdoor, condensing pressure capillary tube, condensing pressure holding wire and transducer power output lead；Condensing pressure sensor is fixed on condenser liquid collecting mother's pipe by condensing pressure capillary tube, and condensing pressure capillary tube and condenser liquid collecting mother's pipe are connected；One end of condensing pressure holding wire is connected on the outfan of condensing pressure sensor, and the other end is connected on fan frequency converter and Electric air valve controller respectively；Couple respectively through two transducer power output lead lines between fan frequency converter and two frequency conversion fans, Electric air valve valve block is arranged on the air inlet of casing of outdoor, Electric air valve controller is connected on Electric air valve YE by Electric air valve controller power output lead, mechanical linkage between Electric air valve YE and Electric air valve valve block, fan frequency converter and Electric air valve controller are respectively coupled on power frequency supply lines, power frequency supply lines connects the power supply of peripheral hardware, and combination constitutes intake automaton.
The present invention compared with prior art, can control condenser intake, its control principle science, simple process by auto linear, and control accuracy is high, saves manpower, and energy consumption is low, failure rate is low, and the life-span is long；It is simple that it controls device structure, controls reliable, and wide accommodation controls environmental friendliness.
Accompanying drawing illustrates:
Fig. 1 is the Facad structure principle schematic of the air-conditioner outdoor unit of the present invention.
Fig. 2 is the structure principle schematic of the air-conditioner outdoor unit of the present invention.
Fig. 3 is the automatic control flow chart structural principle schematic diagram of the present invention.
Detailed description of the invention:
Below by specific embodiment and in conjunction with accompanying drawing, the invention will be further described.
Embodiment:
The autocontrol method of the outdoor condenser cooling air quantity that the present embodiment relates to, realizes in air quantity automaton, and its control process includes signal of telecommunication conversion, controls frequency conversion fan exhaust air rate and control Electric air valve intake three part, and concrete control process is:
(4) signal of telecommunication conversion: condenser liquid collecting mother's pipe 7 internal condensation pressure is transferred to condensing pressure sensor 1 by condensing pressure capillary tube 11, condensing pressure sensor 1 condensing pressure is converted to voltage more than 0 less than 10V or electric current more than the 4mA signal of telecommunication less than 20mA, the signal of telecommunication of condensing pressure sensor 1 increases along with the raising of condensing pressure, the signal of telecommunication of condensing pressure sensor 1 reduces along with the reduction of condensing pressure, it is achieved the ratio of condensing pressure signal and the signal of telecommunication is changed；
(5) frequency conversion fan exhaust air rate is controlled: the signal of telecommunication that step (1) is changed by condensing pressure sensor 1 flows to fan frequency converter 2 by condensing pressure holding wire 12, electric energy after frequency-conversion processing is transferred on two frequency conversion fans 3 respectively through two transducer power output leads 13 by the signal of telecommunication that the fan frequency converter 2 that power supply drives is changed according to step (1), then the operating frequency and the rotating speed that control frequency conversion fan 3 increase along with the increase of step (1) converted electrical number, the operating frequency and the rotating speed that control frequency conversion fan 3 reduce along with the reduction of step (1) converted electrical number, and then realize the exhaust air rate of Linear Control frequency conversion fan 3；
(3) Electric air valve intake is controlled: the signal of telecommunication that step (1) is changed by condensing pressure sensor 1 flows to Electric air valve controller 6 by condensing pressure holding wire 12, power frequency electric energy is sent to Electric air valve YE 4 by Electric air valve controller power output lead 8 by the signal of telecommunication that the Electric air valve controller 6 that power supply drives is changed according to step (1), thus controlling rotating and the action ratio of Electric air valve YE 4, and then the aperture of Electric air valve valve block 5 controlling to be arranged on casing of outdoor 10 air inlet increases along with the increase of step (1) converted electrical number, the aperture of Electric air valve valve block 5 reduces along with the reduction of step (1) converted electrical number, realize linearly automatically controlling of Electric air valve intake.
The agent structure of the air quantity automaton that the present embodiment relates to includes: condensing pressure sensor 1, fan frequency converter 2, frequency conversion fan 3, Electric air valve YE 4, Electric air valve valve block 5, Electric air valve controller 6, condenser liquid collecting mother's pipe 7, Electric air valve controller power output lead 8, power frequency supply lines 9, casing of outdoor 10, condensing pressure capillary tube 11, condensing pressure holding wire 12 and transducer power output lead 13；Condensing pressure sensor 1 is fixed on condenser liquid collecting mother's pipe 7 by condensing pressure capillary tube 11, and condensing pressure capillary tube 11 and condenser liquid collecting mother's pipe 7 are connected；One end of condensing pressure holding wire 12 is connected on the outfan of condensing pressure sensor 1, and the other end is connected on fan frequency converter 2 and Electric air valve controller 6 respectively；Couple respectively through two transducer power output lead 13 lines between fan frequency converter 2 with two frequency conversion fans 3, Electric air valve valve block 5 is arranged on the air inlet of casing of outdoor 10, Electric air valve controller 6 is connected on Electric air valve YE 4 by Electric air valve controller power output lead 8, mechanical linkage between Electric air valve YE 4 and Electric air valve valve block 5, fan frequency converter 2 and Electric air valve controller 6 are respectively coupled on power frequency supply lines 9, power frequency supply lines 9 connects the power supply of peripheral hardware, and combination constitutes intake automaton.
Claims (2)
1. the autocontrol method of an outdoor condenser cooling air quantity, it is characterized in that control method realizes in air quantity automaton, control process includes signal of telecommunication conversion, controls frequency conversion fan exhaust air rate and control Electric air valve intake three part, and concrete control process is:
(1) signal of telecommunication conversion: condenser liquid collecting mother's pipe internal condensation pressure is transferred to condensing pressure sensor by condensing pressure capillary tube, condensing pressure sensor condensing pressure is converted to voltage more than 0 less than 10V or electric current more than the 4mA signal of telecommunication less than 20mA, the signal of telecommunication of condensing pressure sensor increases along with the raising of condensing pressure, the signal of telecommunication of condensing pressure sensor reduces along with the reduction of condensing pressure, it is achieved the ratio of condensing pressure signal and the signal of telecommunication is changed；
(2) frequency conversion fan exhaust air rate is controlled: the signal of telecommunication that step (1) is changed is flowed to fan frequency converter by condensing pressure holding wire by condensing pressure sensor, electric energy after frequency-conversion processing is transferred on two frequency conversion fans respectively through two transducer power output leads according to the signal of telecommunication by the fan frequency converter that power supply drives, then the operating frequency and the rotating speed that control frequency conversion fan increase along with the increase of the signal of telecommunication, the operating frequency and the rotating speed that control frequency conversion fan reduce along with the reduction of the signal of telecommunication, and then realize the exhaust air rate of Linear Control frequency conversion fan；
(3) Electric air valve intake is controlled: the signal of telecommunication that step (1) is changed is flowed to Electric air valve controller by condensing pressure holding wire by condensing pressure sensor, power frequency electric energy is sent to Electric air valve YE by Electric air valve controller power output lead according to the signal of telecommunication by the Electric air valve controller that power supply drives, thus controlling rotating and the action ratio of Electric air valve YE, and then the aperture of Electric air valve valve block controlling to be arranged on casing of outdoor air inlet increases along with the increase of the signal of telecommunication, the aperture of Electric air valve valve block reduces along with the reduction of the signal of telecommunication, realize the Linear Control of Electric air valve intake.
2. the autocontrol method of outdoor condenser cooling air quantity according to claim 1, it is characterised in that the agent structure of described air quantity automaton includes: condensing pressure sensor, fan frequency converter, frequency conversion fan, Electric air valve YE, Electric air valve valve block, Electric air valve controller, condenser liquid collecting mother pipe, Electric air valve controller power output lead, power frequency supply lines, casing of outdoor, condensing pressure capillary tube, condensing pressure holding wire and transducer power output lead；Condensing pressure sensor is fixed on condenser liquid collecting mother's pipe by condensing pressure capillary tube, and condensing pressure capillary tube and condenser liquid collecting mother's pipe are connected；One end of condensing pressure holding wire is connected on the outfan of condensing pressure sensor, and the other end is connected on fan frequency converter and Electric air valve controller respectively；Couple respectively through two transducer power output lead lines between fan frequency converter and two frequency conversion fans, Electric air valve valve block is arranged on the air inlet of casing of outdoor, Electric air valve controller is connected on Electric air valve YE by Electric air valve controller power output lead, mechanical linkage between Electric air valve YE and Electric air valve valve block, fan frequency converter and Electric air valve controller are respectively coupled on power frequency supply lines, power frequency supply lines connects the power supply of peripheral hardware, and combination constitutes intake automaton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610134777.6A CN105758076A (en) | 2016-03-10 | 2016-03-10 | Automatic control method of air cooling volume of outdoor condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610134777.6A CN105758076A (en) | 2016-03-10 | 2016-03-10 | Automatic control method of air cooling volume of outdoor condenser |
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| Publication Number | Publication Date |
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| CN105758076A true CN105758076A (en) | 2016-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610134777.6A Pending CN105758076A (en) | 2016-03-10 | 2016-03-10 | Automatic control method of air cooling volume of outdoor condenser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020073646A1 (en) * | 2018-10-10 | 2020-04-16 | 维谛技术有限公司 | Condenser and air conditioning system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4616485A (en) * | 1985-02-14 | 1986-10-14 | Ranco Electronics Division | Temperature controller for an air conditioning apparatus |
| CN1534248A (en) * | 2003-03-31 | 2004-10-06 | 上海百富勤空调设备有限公司 | Fuzzy control method for air cooling single cooling machine set operating mode |
| CN101070989A (en) * | 2006-05-11 | 2007-11-14 | 傅孔阳 | Air conditioner control system |
| CN201526483U (en) * | 2009-10-22 | 2010-07-14 | 同济大学 | Variable speed control system for condensate fan |
| CN203240832U (en) * | 2013-03-18 | 2013-10-16 | 浙江盾安机电科技有限公司 | Air-cooled condensation refrigerating unit |
-
2016
- 2016-03-10 CN CN201610134777.6A patent/CN105758076A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4616485A (en) * | 1985-02-14 | 1986-10-14 | Ranco Electronics Division | Temperature controller for an air conditioning apparatus |
| CN1534248A (en) * | 2003-03-31 | 2004-10-06 | 上海百富勤空调设备有限公司 | Fuzzy control method for air cooling single cooling machine set operating mode |
| CN101070989A (en) * | 2006-05-11 | 2007-11-14 | 傅孔阳 | Air conditioner control system |
| CN201526483U (en) * | 2009-10-22 | 2010-07-14 | 同济大学 | Variable speed control system for condensate fan |
| CN203240832U (en) * | 2013-03-18 | 2013-10-16 | 浙江盾安机电科技有限公司 | Air-cooled condensation refrigerating unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020073646A1 (en) * | 2018-10-10 | 2020-04-16 | 维谛技术有限公司 | Condenser and air conditioning system |
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Application publication date: 20160713 |