CN105135614A - Vehicle air conditioner anti-frosting control method - Google Patents
Vehicle air conditioner anti-frosting control method Download PDFInfo
- Publication number
- CN105135614A CN105135614A CN201510549617.3A CN201510549617A CN105135614A CN 105135614 A CN105135614 A CN 105135614A CN 201510549617 A CN201510549617 A CN 201510549617A CN 105135614 A CN105135614 A CN 105135614A
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- Prior art keywords
- conditioner
- control
- signal
- compressor
- air
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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
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
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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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention provides a vehicle air conditioner anti-frosting control method. The vehicle air conditioner anti-frosting control method comprises the following control steps and collects the following input signals: 1, carrying out electrifying initialization; 2, carrying out signal collection: (1), collecting the temperature of an evaporator as a control input signal; (2), collecting the temperature of inlet air or the temperature of vehicle exterior as a control input signal; (3), collecting the humidity of the inlet air or the humidity of the vehicle exterior as a control input signal; (4), collecting the position of a new air air gate as a control input signal; (5), collecting air blower side voltage as a control input signal; (6), collecting the rotating speed of an engine or the rotating speed of a compressor as a control input signal; 7, collecting the speed of a vehicle as a control input signal; and (8), collecting the On/Off state and the conversion time of the compressor as control input signals; 3, carrying out signal processing and setting a target temperature control point; and 4, controlling the connection and disconnection of the compressor. The vehicle air conditioner anti-frosting control method utilizing the signals collected according to factors, such as environment, work condition and mode, as novel target temperature control points can ensure that a vehicle air conditioner is not prone to frosting, can exert the optimum performance of the vehicle air conditioner, and can improve the riding comfort of passengers.
Description
Technical field
The present invention relates to the design and manufaction of car air-conditioner, specifically, is a kind of control method of car air-conditioner antifrost.
Background technology
Prevent car air-conditioner frosting from being design car air-conditioner, allow car air-conditioner play one of key technology of maximum efficiency.At present, the antifrost of car air-conditioner controls to be that rating test by early stage determines an evaporimeter location point, determines the temperature spot that car air-conditioner controls: comprise that a break-off signal and recovery temperature carry out.When evaporator temperature is reduced to break-off signal, car air-conditioner disconnects compressor, stops refrigeration to prevent evaporimeter frosting.And when evaporator temperature is increased to adhesive temperature, car air-conditioner adhesive compressor continues refrigeration.When arranging Integral automobile control system, that the thermistor having preset evaporator temperature is set on car air-conditioner, then by the feedback realization control to compressor break-make of corresponding control module according to thermistor, this mainly adopts electronic thermostat, control panel or car load ECU accept and send signal to realize, wherein, electronic thermostat realizes compressor control by hardware circuits which process evaporator temperature signal, control panel or ECU are then the control realizing compressor by writing evaporator temperature signal software handler in single-chip microcomputer in advance, both, the break-make of compressor controls only relevant with evaporator temperature, have nothing to do with other factors, and concerning same product, temperature control point is fixing, can not arbitrarily change.
The existing this control method to car air-conditioner antifrost only can go to control compressor break-make according to the temperature of evaporimeter, under no matter vehicle and air-conditioning are in which kind of environment, which kind of operating mode, which kind of pattern, it is very unscientific that the evaporator temperature control point corresponding to compressor break-make is all that same temperature spot makes.Because in actual use, whether frosting is not only relevant with evaporator temperature for evaporimeter, and is also relevant with some other factor, such as wind speed, the speed of a motor vehicle, environment etc.If only go to judge evaporimeter whether frosting controlling accordingly according to a fixing evaporator temperature point, the object that car air-conditioner is accurately controlled must do not reached, not only car air-conditioner can not be in best duty, and likely cause evaporimeter also non-frosting and compressor has quit work, cause compressor break-make frequent, leaving air temp is sometimes hot and sometimes cold, air-conditioning can not play maximum performance, car load cooling-down effect is bad, also can reduce the life-span of Vehicular air-conditioner compressor and electrical system.In addition, also likely cause evaporimeter frosting and compressor does not quit work, cause car air-conditioner refrigeration worse and worse, until cannot freeze.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of control method of car air-conditioner antifrost is provided, the input signals such as it adopts environmentally, operating mode, pattern adjust evaporimeter temperature control point in real time, car air-conditioner can be made to be in optimum Working all the time, the maximum performance of car air-conditioner can be played, car air-conditioner not easily frosting can be made again, the life-span of Vehicular air-conditioner compressor and electrical system can not only be improved, and the riding comfort of passenger can be improved.
For achieving the above object, present invention employs following technical scheme.
A control method for car air-conditioner antifrost, is characterized in that, its rate-determining steps and Gather and input signal are:
(1) power-up initializing
(2) signals collecting
1. evaporator temperature is gathered as control inputs signal;
2. outside gathering EAT or car, temperature is as control inputs signal;
3. outside gathering air intake humidity or car, humidity is as control inputs signal;
4. new wind damper positions is gathered as control inputs signal;
5. blower end voltage is gathered as control inputs signal;
6. collection engine speed or compressor rotary speed are as control inputs signal;
7. the speed of a motor vehicle is gathered as control inputs signal;
8. collect and process machine on off operating mode and switching time are as control inputs signal;
(3) signal transacting
By step (2) 1. ~ input in algorithm software after the signal of 8. item collection carries out filtering process, calculate and set the target temperature control point of a car air-conditioner;
(4) break-make of compressor is controlled
Step (3) is calculated and the target temperature control point set as the evaporator temperature of car air-conditioner, when this evaporator temperature is less than the break-off signal in target temperature control point, vehicular air conditioner control system controls compressor and disconnects; When this evaporator temperature is greater than the adhesive temperature in target temperature control point, vehicular air conditioner control system controls compressor adhesive; Make car air-conditioner not only can not frosting but also maximum refrigeration performance can be played, be in optimum Working all the time.
Further, operator knows by the circuit of car air-conditioner control panel inside the on off operating mode that Vehicular air-conditioner compressor is real-time.
The good effect of the control method of car air-conditioner antifrost of the present invention is:
(1) the present invention has taken into full account the various factors that may affect car air-conditioner frosting, and all has acquisition and processing way to the signal of these factors, no longer using evaporator temperature signal as single basis for estimation.
(2) the present invention does not re-use a fixing evaporator temperature control point, but using environmentally, the signal that gathers of the factor such as operating mode, pattern is as new target temperature control point, car air-conditioner not easily frosting can be ensured, the optimum performance of car air-conditioner can be played again.
(3) control method of the present invention can make full use of the hardware configuration of existing vehicular air conditioner control system, the performance of car air-conditioner antifrost greatly can be promoted without the need to increasing other hardware, the life-span of Vehicular air-conditioner compressor and electrical system can not only be improved, improve the utilization ratio of the energy, and the riding comfort of passenger can be improved, meet that automobile industry becomes more meticulous, the development trend of energy-saving.
Accompanying drawing explanation
Fig. 1 is the control flow block diagram of the control method of car air-conditioner antifrost of the present invention.
Detailed description of the invention
The detailed description of the invention of the control method introducing car air-conditioner antifrost of the present invention is continued below in conjunction with accompanying drawing.But it is noted that enforcement of the present invention is not limited to following embodiment.
A control method for car air-conditioner antifrost, its rate-determining steps and Gather and input signal are:
(1) power-up initializing
(2) signals collecting
1. evaporator temperature is gathered as control inputs signal, by arranging thermistor on an evaporator to gather evaporator temperature signal.
2. the outer temperature of EAT or car is gathered as control inputs signal, by being arranged on thermistor outside air inlet or car to gather EAT or car outer air temperature.
3. the outer humidity of air intake humidity or car is gathered as control inputs signal, by being arranged on humidity sensor outside air inlet or car to gather air intake humidity or car outer air humidity.
4. gather new wind damper positions as control inputs signal, the circuit by control panel inside obtains the position signalling of internal-external cycle throttle.
5. gather blower end voltage as control inputs signal, obtain blower end voltage by car air-conditioner control panel internal circuit.
6. collection engine speed or compressor rotary speed are as control inputs signal, and engine speed exists corresponding relation with compressor rotary speed, therefore, gathers engine speed or compressor rotary speed signal by vehicle body rigid line or bus.
7. gather the speed of a motor vehicle as control inputs signal, gather GES by vehicle body rigid line or bus.
8. collect and process machine on off operating mode and switching time are as control inputs signal, can be optimized based at present conventional air-conditioner control system and control panel to software, can realize to compressor on off operating mode and switching time signal collection.
(3) signal transacting
Obtaining step (2) 1. ~ signal of 8. item after, respectively filtering and process are carried out to described signal by the software program of car air-conditioner control panel MCU, it are substituting in algorithm software the evaporimeter target temperature control point calculating car air-conditioner the best.
(4) break-make of compressor is controlled
Step (3) is calculated and the target temperature control point set as the evaporator temperature of car air-conditioner, when this evaporator temperature is less than the break-off signal in target temperature control point, vehicular air conditioner control system controls compressor and disconnects; When this evaporator temperature is greater than the adhesive temperature in target temperature control point, vehicular air conditioner control system controls compressor adhesive; Make car air-conditioner not only can not frosting but also maximum refrigeration performance can be played, be in optimum Working all the time.
Operator knows by the circuit of car air-conditioner control panel inside the on off operating mode that Vehicular air-conditioner compressor is real-time.
Claims (2)
1. a control method for car air-conditioner antifrost, is characterized in that, its rate-determining steps and Gather and input signal are:
(1) power-up initializing
(2) signals collecting
1. evaporator temperature is gathered as control inputs signal;
2. outside gathering EAT or car, temperature is as control inputs signal;
3. outside gathering air intake humidity or car, humidity is as control inputs signal;
4. new wind damper positions is gathered as control inputs signal;
5. blower end voltage is gathered as control inputs signal;
6. collection engine speed or compressor rotary speed are as control inputs signal;
7. the speed of a motor vehicle is gathered as control inputs signal;
8. collect and process machine on off operating mode and switching time are as control inputs signal;
(3) signal transacting
By step (2) 1. ~ input in algorithm software after the signal of 8. item collection carries out filtering process, calculate and set the target temperature control point of a car air-conditioner;
(4) break-make of compressor is controlled
Step (3) is calculated and the target temperature control point set as the evaporator temperature of car air-conditioner, when this evaporator temperature is less than the break-off signal in target temperature control point, vehicular air conditioner control system controls compressor and disconnects; When this evaporator temperature is greater than the adhesive temperature in target temperature control point, vehicular air conditioner control system controls compressor adhesive; Make car air-conditioner not only can not frosting but also maximum refrigeration performance can be played, be in optimum Working all the time.
2. the control method of car air-conditioner antifrost according to claim 1, is characterized in that, operator knows by the circuit of car air-conditioner control panel inside the on off operating mode that Vehicular air-conditioner compressor is real-time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510549617.3A CN105135614A (en) | 2015-09-01 | 2015-09-01 | Vehicle air conditioner anti-frosting control method |
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| CN201510549617.3A CN105135614A (en) | 2015-09-01 | 2015-09-01 | Vehicle air conditioner anti-frosting control method |
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| CN201510549617.3A Pending CN105135614A (en) | 2015-09-01 | 2015-09-01 | Vehicle air conditioner anti-frosting control method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421183A (en) * | 2017-07-10 | 2017-12-01 | 博耐尔汽车电气系统有限公司 | A kind of quick method for improving evaporator for air-conditioning system of automobile temperature control point |
| CN109186921A (en) * | 2018-09-17 | 2019-01-11 | 江西江铃集团新能源汽车有限公司 | Air conditioner of electric vehicle evaporator icing tests method |
| CN112406473A (en) * | 2020-12-08 | 2021-02-26 | 安徽江淮汽车集团股份有限公司 | Air heater temperature point calibration method, device, equipment and storage medium |
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| CN103836857A (en) * | 2012-11-26 | 2014-06-04 | 浙江盾安人工环境股份有限公司 | Defrosting method of air conditioner |
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2015
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| JPH0355452A (en) * | 1989-07-25 | 1991-03-11 | Taisei Corp | Control method for air conditioner |
| CN2712685Y (en) * | 2004-07-23 | 2005-07-27 | 福州西诚电子有限公司 | Intelligent type automobile air-conditioning control device |
| CN101428544A (en) * | 2008-12-08 | 2009-05-13 | 奇瑞汽车股份有限公司 | Vehicle air conditioner control method and control method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421183A (en) * | 2017-07-10 | 2017-12-01 | 博耐尔汽车电气系统有限公司 | A kind of quick method for improving evaporator for air-conditioning system of automobile temperature control point |
| CN109186921A (en) * | 2018-09-17 | 2019-01-11 | 江西江铃集团新能源汽车有限公司 | Air conditioner of electric vehicle evaporator icing tests method |
| CN112406473A (en) * | 2020-12-08 | 2021-02-26 | 安徽江淮汽车集团股份有限公司 | Air heater temperature point calibration method, device, equipment and storage medium |
| CN112406473B (en) * | 2020-12-08 | 2022-06-24 | 安徽江淮汽车集团股份有限公司 | Air heater temperature point calibration method, device, equipment and storage medium |
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Effective date of registration: 20181113 Address after: 201108 A 5 District, No. 2059, Zhuan Xing Road, Minhang District, Shanghai. Applicant after: Shanghai pine Chi Energy Automotive Technology Co., Ltd. Address before: 201108 No. 4999 Hua Ning Road, Xhenzhuang Industrial Zone, Minhang District, Shanghai. Applicant before: Shanghai Songz Automobile Air Conditioning Co., Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151209 |