CN103836768A - Method for controlling automobile air conditioner displacement-fixed compressor - Google Patents
Method for controlling automobile air conditioner displacement-fixed compressor Download PDFInfo
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- CN103836768A CN103836768A CN201410062082.2A CN201410062082A CN103836768A CN 103836768 A CN103836768 A CN 103836768A CN 201410062082 A CN201410062082 A CN 201410062082A CN 103836768 A CN103836768 A CN 103836768A
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Abstract
The invention relates to a method for controlling an automobile air conditioner displacement-fixed compressor. The temperature outside an automobile serves as the condition for starting the compressor, the method specifically includes the following steps of presetting a threshold value A of the temperature outside the automobile, detecting the value of the temperature outside the automobile, judging whether the value of the temperature outside the automobile is larger than the preset threshold value A of the temperature outside the automobile, if yes, starting the compressor, and if not, stopping the compressor. According to the method, the phenomenon that energy waste is caused due to the fact that the displacement-fixed compressor is in the started state when the temperature outside the automobile is low is avoided; the phenomenon that the lubricating effect is not good due to the fact that viscosity of lubricating oil in a lubricating system of the compressor is high when the temperature outside the automobile is low is avoided; by setting the conditions, the service life of the compressor can be prolonged, and performance of an air conditioner system is improved.
Description
Technical field
The present invention relates to automobile air conditioning technology field, be specifically related to a kind of control method of air conditioning for automobiles fixed displacement compressor.
Background technology
In prior art, automobile air conditioner compressor generally adopts fixed displacement compressor and variable compressor.Described variable compressor can be according to the automatic regulating power output of the temperature of setting.Air-conditioner control system does not gather the temperature signal in evaporimeter m air port, thereby but automatically regulates m draught temperature according to the compression ratio that air-conditioning duct internal pressure variable signal is controlled compressor.In the overall process of refrigeration, compressor is work all the time, and the adjusting of refrigeration intensity relies on the pressure-regulating valve that is contained in compressor inside completely and controls.In the time that air-conditioning duct inner high voltage end pressure is too high, pressure-regulating valve shortens compressor inner carrier stroke to reduce compression ratio, will reduce like this refrigeration intensity.When high-pressure side pressure drop to a certain extent, low-pressure end pressure rise is to a certain extent time, pressure-regulating valve increases piston stroke to improve refrigeration intensity.The capacity of described fixed displacement compressor is proportional raising along with the raising of the rotating speed of engine, and it can not change power stage automatically according to the demand of refrigeration, and larger on the impact of engine consumption.Its control is generally by gathering the temperature signal of evaporimeter air outlet, and when temperature reaches the temperature of setting, electromagnetic clutch for compressor unclamps, and compressor quits work; After temperature raises, electromagnetic clutch combination, compressor starts work.Fixed displacement compressor is also subject to the control of air-conditioning system pressure, and in the time that pipeline inner pressure is too high, compressor quits work.
In the time that ambient temperature is lower, fixed displacement compressor is in open mode, cause the waste of the energy, in addition, in the time that ambient temperature is lower, in the lubricating system of compressor, oil body is high, lubricant effect is not good, now fixed displacement compressor operating can shorten the working life of compressor greatly, and then affects the performance of air-conditioning system.
In addition, in the time that evaporator temperature is too low, open fixed displacement compressor and easily cause evaporimeter to freeze, and then affect the normal work of automotive air-conditioning system, shorten the service life of air conditioning for automobiles.
Summary of the invention
The object of the invention is to overcome shortcomings and deficiencies of the prior art, a kind of control method of air conditioning for automobiles fixed displacement compressor is provided, extend the working life of fixed displacement compressor, and realize energy-conservation.
Object of the present invention is achieved through the following technical solutions: a kind of control method of air conditioning for automobiles fixed displacement compressor, it is characterized in that, and the condition that outer car temperature is opened as compressor, detailed process is as follows:
Preset the outer temperature threshold A of car;
The outer temperature value of inspection vehicle, and judge whether the outer temperature value of car is greater than the outer temperature threshold A of default car, and if so, compressor is opened, otherwise compressor cuts out.
As preferably, the outer temperature threshold A of described car is 1 DEG C-5 DEG C, specifically sets according to the vehicle of vehicle.
Further, the control method of described fixed displacement compressor is also made as evaporator temperature the condition that compressor is opened, and detailed process is as follows:
Preset evaporator temperature threshold value B;
Detect evaporator temperature value, and judge whether evaporator temperature value is greater than evaporator temperature threshold value B, if so, compressor is opened, otherwise compressor cuts out.
As preferably, described evaporator temperature threshold value B is 2.5 DEG C-3.5 DEG C, specifically sets according to the vehicle of vehicle.
Further, the control method of described fixed displacement compressor is also greater than evaporator temperature value evaporimeter target temperature value and is made as the condition that compressor is opened, and detailed process is as follows:
According to the leaving air temp heat load calculation arranging;
Calculate evaporimeter target temperature value according to thermic load and air-out mode;
Whether the temperature value that judges evaporimeter is greater than evaporimeter target temperature value, and if so, compressor is opened, otherwise compressor cuts out.
Further, the control method of described fixed displacement compressor also comprises and judges whether and supply voltage whether normal step whether in running order in open state, air blast of air-conditioner controller, if air-conditioner controller in open state, air blast is in running order and supply voltage is normal, compressor is opened, otherwise compressor cuts out.
The control method of described fixed displacement compressor also comprises judging whether this start of compressor exceedes default start threshold value C with the time interval of shutting down last time, if compressor unlatching, otherwise compressor cuts out.
The present invention comprises following advantage and beneficial effect compared to existing technology:
(1) outer car temperature is made as to the condition that compressor is opened, outside temperature value outside car is greater than default car, compressor is opened when temperature threshold A, otherwise compressor cuts out, avoid fixed displacement compressor in the time that ambient temperature is lower in open mode, to cause the waste of the energy; In the time that ambient temperature is lower, in the lubricating system of compressor, oil body is high, and lubricant effect is not good, and the working life that this condition is set can extends compressor improves the performance of air-conditioning system.
(2) evaporator temperature is made as to the condition that compressor is opened; in the time that evaporator temperature value is greater than evaporator temperature threshold value B, compressor is opened, otherwise compressor cuts out, close compressor in the time that evaporator temperature is lower; avoid evaporating device because of low temperature freeze, and then protection refrigeration system.
(3) evaporator temperature value is greater than to evaporimeter target temperature value and is made as the condition that compressor is opened, in the time that the temperature value of evaporimeter is greater than evaporimeter target temperature value, compressor is opened, otherwise compressor cuts out, avoid evaporator temperature during lower than evaporimeter target temperature compressor open and cause energy waste.
(4), by judging whether this start of compressor exceedes default start threshold value C with the time interval of last time shutdown, if compressor is opened, otherwise compressor cuts out, and prevents high frequent open and close, reduces oil consumption.
Brief description of the drawings
Fig. 1 is the flow chart of the control method of air conditioning for automobiles fixed displacement compressor in embodiment.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, a control method for air conditioning for automobiles fixed displacement compressor, by outer car temperature value whether be greater than the outer temperature threshold A of default car, evaporator temperature value whether be greater than evaporator temperature threshold value B, evaporator temperature value whether be greater than evaporimeter target temperature value, air-conditioner controller whether and supply voltage whether in running order in open state, air blast whether be normally made as the condition that compressor is opened.
Detailed process is as follows:
Preset car outer temperature threshold A, evaporator temperature threshold value B and start threshold value C.The outer temperature threshold A of described car is preferably 1 DEG C-5 DEG C, specifically sets according to the vehicle of vehicle.Described evaporator temperature threshold value B is preferably 2.5 DEG C-3.5 DEG C, specifically sets according to the vehicle of vehicle.Described start threshold value C is preferably 30 seconds.
User opens air-conditioning system, and sets out air temperature, air-out mode.
The leaving air temp heat load calculation arranging according to user.
Calculate evaporimeter target temperature value according to the air-out mode of thermic load and user's setting.Because the relation curve of thermic load, air-out mode and evaporimeter target temperature is demarcated by experiment in the research and development of products stage, and be stored in the EEPROM of air-conditioning system, therefore in the present embodiment, directly search evaporimeter target temperature value corresponding in EEPROM according to the air-out mode of the thermic load calculating and user's setting.
Respectively by the outer temperature value of temperature sensor inspection vehicle and evaporator temperature value.
Judge whether the outer temperature value of car is greater than the outer temperature threshold A of default car, whether evaporator temperature value is greater than evaporator temperature threshold value B, whether evaporator temperature value is greater than evaporimeter target temperature value, whether air-conditioner controller is in open state, whether air blast is in running order and whether supply voltage is normal, if the outer temperature value of car is greater than the outer temperature threshold A of default car, evaporator temperature value is greater than evaporator temperature threshold value B, evaporator temperature value is greater than evaporimeter target temperature value, air-conditioner controller is in open state, air blast is in running order and supply voltage is normal, be that above-mentioned six conditions are while all meeting, judge whether this start of compressor and the time interval of shutdown last time exceed default start threshold value C, if compressor is opened, otherwise compressor cuts out.
Described supply voltage is battery tension in air-conditioning system in the present embodiment, and battery tension normal range (NR) is 9-16V.The in running order control magnitude of voltage non-zero that is specially air blast of described air blast.
Above-described embodiment is preferably embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (7)
1. a control method for air conditioning for automobiles fixed displacement compressor, is characterized in that, outer car temperature is made as to the condition that compressor is opened, and detailed process is as follows:
Preset the outer temperature threshold A of car;
The outer temperature value of inspection vehicle, and judge whether the outer temperature value of car is greater than the outer temperature threshold A of default car, and if so, compressor is opened, otherwise compressor cuts out.
2. the control method of air conditioning for automobiles fixed displacement compressor according to claim 1, is characterized in that: the outer temperature threshold A of described car is 1 DEG C-5 DEG C.
3. the control method of air conditioning for automobiles fixed displacement compressor according to claim 1, is characterized in that, also evaporator temperature is made as to the condition that compressor is opened, and detailed process is as follows:
Preset evaporator temperature threshold value B;
Detect evaporator temperature value, and judge whether evaporator temperature value is greater than evaporator temperature threshold value B, if so, compressor is opened, otherwise compressor cuts out.
4. the control method of air conditioning for automobiles fixed displacement compressor according to claim 3, is characterized in that: described evaporator temperature threshold value B is 2.5 DEG C-3.5 DEG C.
5. the control method of air conditioning for automobiles fixed displacement compressor according to claim 1, is characterized in that, also evaporator temperature value is greater than to evaporimeter target temperature value and is made as the condition that compressor is opened, and detailed process is as follows:
According to the leaving air temp heat load calculation arranging;
Calculate evaporimeter target temperature value according to thermic load and air-out mode;
Whether the temperature value that judges evaporimeter is greater than evaporimeter target temperature value, and if so, compressor is opened, otherwise compressor cuts out.
6. the control method of air conditioning for automobiles fixed displacement compressor according to claim 1, it is characterized in that: also comprise and judge whether and supply voltage whether normal step whether in running order in open state, air blast of air-conditioner controller, if air-conditioner controller in open state, air blast is in running order and supply voltage is normal, compressor is opened, otherwise compressor cuts out.
7. according to the control method of the air conditioning for automobiles fixed displacement compressor described in claim 1 to 6 any one, it is characterized in that: also comprise and judge whether this start of compressor and the time interval of shutdown last time exceed the step of default start threshold value C, if compressor is opened, otherwise compressor cuts out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410062082.2A CN103836768A (en) | 2014-02-24 | 2014-02-24 | Method for controlling automobile air conditioner displacement-fixed compressor |
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| CN201410062082.2A CN103836768A (en) | 2014-02-24 | 2014-02-24 | Method for controlling automobile air conditioner displacement-fixed compressor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106408719A (en) * | 2016-10-24 | 2017-02-15 | 美的集团武汉制冷设备有限公司 | Intelligent ventilation and air exchange system and control method thereof, server and ventilation and air exchange device |
| CN106440230A (en) * | 2016-10-24 | 2017-02-22 | 美的集团武汉制冷设备有限公司 | Intelligent air conditioning system and control method, server and air-conditioner thereof |
| CN108482063A (en) * | 2018-04-02 | 2018-09-04 | 奇瑞汽车股份有限公司 | A kind of control method and device of motor compressor for vehicle air conditioner rotating speed |
| CN108583215A (en) * | 2018-07-19 | 2018-09-28 | 泰铂（上海）环保科技股份有限公司 | A kind of controller for preventing automobile air conditioner compressor to be frequently attracted and its control method |
| CN109878948A (en) * | 2019-04-15 | 2019-06-14 | 珠海格力电器股份有限公司 | Automatic sterilization and peculiar smell removal sterilization control method and garbage can |
| CN111267582A (en) * | 2020-03-19 | 2020-06-12 | 滁州市爱科知识产权代理有限公司 | Displacement control method for automobile air conditioner compressor |
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| JPS59114114A (en) * | 1982-12-20 | 1984-07-02 | Hitachi Ltd | Air conditioner for automobile |
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| JPS59114114A (en) * | 1982-12-20 | 1984-07-02 | Hitachi Ltd | Air conditioner for automobile |
| CN101311638A (en) * | 2007-05-22 | 2008-11-26 | 德尔菲技术公司 | Control method for a variable displacement refrigerant compressor in a high-efficiency AC system |
| CN102313339A (en) * | 2010-06-30 | 2012-01-11 | 现代自动车株式会社 | Device and method for controlling compressor of vehicles |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106408719A (en) * | 2016-10-24 | 2017-02-15 | 美的集团武汉制冷设备有限公司 | Intelligent ventilation and air exchange system and control method thereof, server and ventilation and air exchange device |
| CN106440230A (en) * | 2016-10-24 | 2017-02-22 | 美的集团武汉制冷设备有限公司 | Intelligent air conditioning system and control method, server and air-conditioner thereof |
| CN108482063A (en) * | 2018-04-02 | 2018-09-04 | 奇瑞汽车股份有限公司 | A kind of control method and device of motor compressor for vehicle air conditioner rotating speed |
| CN108583215A (en) * | 2018-07-19 | 2018-09-28 | 泰铂（上海）环保科技股份有限公司 | A kind of controller for preventing automobile air conditioner compressor to be frequently attracted and its control method |
| CN109878948A (en) * | 2019-04-15 | 2019-06-14 | 珠海格力电器股份有限公司 | Automatic sterilization and peculiar smell removal sterilization control method and garbage can |
| CN111267582A (en) * | 2020-03-19 | 2020-06-12 | 滁州市爱科知识产权代理有限公司 | Displacement control method for automobile air conditioner compressor |
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Application publication date: 20140604 |