CN112248744A - Control system of vehicle air conditioner - Google Patents
Control system of vehicle air conditioner Download PDFInfo
- Publication number
- CN112248744A CN112248744A CN202011059660.9A CN202011059660A CN112248744A CN 112248744 A CN112248744 A CN 112248744A CN 202011059660 A CN202011059660 A CN 202011059660A CN 112248744 A CN112248744 A CN 112248744A
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- CN
- China
- Prior art keywords
- ecu
- refrigerant
- expansion valve
- control system
- air conditioner
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- Legal status (The legal status 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 status listed.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
- B60H1/00807—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being a specific way of measuring or calculating an air or coolant temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a control system of a vehicle air conditioner, comprising: ECU, condenser, cooling fan, liquid storage pot, expansion valve, pressure sensor, evaporimeter and compressor. The condenser is internally provided with a refrigerant, the cooling fan is electrically connected with the ECU, and the cooling fan is used for blowing hot air to the condenser. The liquid storage tank is connected with the condenser. The expansion valve is connected with the liquid storage tank. The pressure sensor is arranged between the liquid storage tank and the expansion valve and is electrically connected with the ECU. The evaporator is connected with an expansion valve. Wherein, the liquefied and heated refrigerant is pressurized and then enters the evaporator through the liquid storage tank, the pressure sensor and the expansion valve in sequence. The pressure sensor can monitor the pressure of the refrigerant flowing through in real time, and the ECU controls the cooling fan to stop running when the pressure of the refrigerant exceeds a first preset value. Therefore, the control system of the vehicle air conditioner has strong practicability, improves the effective energy utilization rate of the engine, and reduces the oil consumption of the whole vehicle.
Description
Technical Field
The invention relates to the technical field of vehicle fan control, in particular to a control system of a vehicle air conditioner.
Background
After the weather is hot, when the air conditioner is turned on, the fan of the engine starts to operate, the fan blows hot air to the condenser at the front end of the fan through rotation, the refrigerant in the condenser is liquefied and heated, the high-temperature refrigerant enters the evaporator through the liquid storage tank and the expander after being pressurized, the air is blown to the evaporator through the air blower, the refrigerant absorbs heat of air through evaporation, and the cooled air is blown into a carriage to play a role in air conditioning and refrigeration. After the air conditioner switch is turned on, the fan can run continuously, after the refrigeration requirement of a driver is met, a part of work is wasted in the subsequent operation of the fan, the effective work is reduced, and the fuel consumption rate is increased.
At present, an automobile factory has no control on the operation of a fan when the air conditioner is turned on, and an engine continuously emits heat in the operation process, and the heat is taken away after being cooled by the fan and is used for cooling water temperature.
The prior art scheme is that the operation of a fan is controlled in an extensive mode, an air conditioner is associated with a fan rotating speed function, only one fan rotating speed can be set for the function, when the air conditioner is started, the fan is output at the set fan rotating speed, as long as an air conditioner switch is turned on, even if the temperature of the air conditioner meets the requirement, the fan can operate all the time, and a part of energy can be wasted when the fan operates.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a control system of a vehicle air conditioner, which has strong practicability, improves the effective energy utilization rate of an engine, and reduces the oil consumption of the whole vehicle.
To achieve the above object, the present invention provides a control system of a vehicle air conditioner, comprising: ECU, condenser, cooling fan, liquid storage pot, expansion valve, pressure sensor, evaporimeter and compressor. The condenser is internally provided with a refrigerant, the cooling fan is electrically connected with the ECU, and the cooling fan is used for blowing hot air to the condenser. The liquid storage tank is connected with the condenser. The expansion valve is connected with the liquid storage tank. The pressure sensor is arranged between the liquid storage tank and the expansion valve and is electrically connected with the ECU. The evaporator is connected with an expansion valve. One end of the compressor is connected with the evaporator, and the other end of the compressor is connected with the condenser. Wherein, the liquefied and heated refrigerant is pressurized and then enters the evaporator through the liquid storage tank, the pressure sensor and the expansion valve in sequence. The pressure sensor can monitor the pressure of the refrigerant flowing through in real time, and the ECU controls the cooling fan to stop running when the pressure of the refrigerant exceeds a first preset value.
In one embodiment of the present invention, the ECU controls the cooling fan to be activated when the pressure of the refrigerant is lower than a second preset value.
In an embodiment of the present invention, the control system of the vehicle air conditioner further includes a heat sensitive pipe, one end of which is connected to a portion between the evaporator and the compressor, and the other end of which is connected to the expansion valve.
In one embodiment of the invention, the pressure sensor is configured to send the pressure of the refrigerant monitored in real time to the ECU.
In one embodiment of the present invention, the blower blows air to the evaporator, the refrigerant in the evaporator absorbs heat of the air through evaporation, and the cooled air is blown into the vehicle compartment.
In one embodiment of the present invention, the blower is electrically connected to the ECU.
In one embodiment of the present invention, the compressor is electrically connected to the ECU.
Compared with the prior art, the control system of the vehicle air conditioner controls the operation of the fan through the pressure feedback of the refrigerant, reduces the power loss of an engine, improves the energy utilization rate, reduces the oil consumption of the whole vehicle, and enables the control of the air fan of the vehicle to be more intelligent.
Drawings
Fig. 1 is a schematic diagram of a control system of a vehicle air conditioner according to an embodiment of the present invention.
Description of the main reference numerals:
the method comprises the following steps of 1-condenser, 2-cooling fan, 3-liquid storage tank, 4-expansion valve, 5-pressure sensor, 6-evaporator, 7-compressor, 8-thermosensitive tube and 9-blower.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Fig. 1 is a schematic diagram of a control system of a vehicle air conditioner according to an embodiment of the present invention. As shown in fig. 1, a control system of a vehicle air conditioner according to a preferred embodiment of the present invention includes: ECU, condenser 1, cooling fan 2, liquid storage tank 3, expansion valve 4, pressure sensor 5, evaporator 6, and compressor 7. The condenser 1 has a refrigerant therein, the cooling fan 2 is electrically connected to the ECU, and the cooling fan 2 blows hot air toward the condenser 1. The liquid storage tank 3 is connected with the condenser 1. The expansion valve 4 is connected with the liquid storage tank 3. The pressure sensor 5 is arranged between the liquid storage tank 3 and the expansion valve 4, and the pressure sensor 5 is electrically connected with the ECU. The evaporator 6 is connected to the expansion valve 4. One end of the compressor 7 is connected to the evaporator 6, and the other end of the compressor 7 is connected to the condenser 1. Wherein, the liquefied and heated refrigerant is pressurized and then enters the evaporator 6 through the liquid storage tank 3, the pressure sensor 5 and the expansion valve 4 in sequence. The pressure sensor 5 can monitor the pressure of the refrigerant flowing through in real time, and when the pressure of the refrigerant exceeds a first preset value, the ECU controls the cooling fan 2 to stop running.
In one embodiment of the present invention, the ECU controls the cooling fan 2 to be activated when the pressure of the refrigerant is lower than a second preset value. The control system of the air conditioner for the vehicle further includes a thermo-sensitive tube 8, one end of the thermo-sensitive tube 8 is connected to a portion between the evaporator 6 and the compressor 7, and the other end of the thermo-sensitive tube 8 is connected to the expansion valve 4.
In one embodiment of the present invention, the pressure sensor 5 is configured to send the pressure of the refrigerant monitored in real time to the ECU. The blower 9 blows air toward the evaporator 6, the refrigerant in the evaporator 6 absorbs heat of the air through evaporation, and the cooled air is blown into the vehicle compartment. The blower 9 is electrically connected to the ECU. The compressor 7 is electrically connected to the ECU.
In practical application, the specific working flow of the control system of the vehicle air conditioner of the invention is as follows: a pressure sensor 5 is arranged in the area between the liquid storage tank 3 and the expansion valve 4, the pressure sensor 5 is connected into an ECU control program, and through a control strategy of the fan, when the pressure is larger than a set value, the ECU gives an instruction to the electric control cooling fan 2 to stop running. At this point, since the liquid refrigerant is still under pressure, the refrigerant will still flow and refrigeration will still be in operation. When the pressure is less than a predetermined value, the operation of the cooling fan 2 is reactivated, so that the cooling fan 2 is rotated again to heat the refrigerant. According to the current fan strategy, in order to meet the cooling requirements of different parts of the whole vehicle and protect the engine, the operation rotating speed of the electric control cooling fan 2 is controlled according to the maximum fan rotating speed meeting the activation condition, so the rotating speed of the refrigerant pressure control fan is also put in the same control strategy, when an air conditioner switch is turned on and the pressure of the refrigerant is smaller than a certain set value, the refrigerant pressure control condition of the cooling fan 2 is established, and the rotating speed of the fan can be controlled by taking the maximum value of each condition.
In a word, the control system of the vehicle air conditioner controls the operation of the fan through the pressure feedback of the refrigerant, reduces the power loss of an engine, improves the energy utilization rate, reduces the oil consumption of the whole vehicle, and enables the control of the air fan of the vehicle to be more intelligent. The automobile is suitable for the whole automobiles with various purposes, and has wide application range and strong practicability.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (7)
1. A control system of an air conditioner for a vehicle,
ECU；
a condenser having a refrigerant therein;
the cooling fan is electrically connected with the ECU and used for blowing hot air to the condenser;
the liquid storage tank is connected with the condenser;
the expansion valve is connected with the liquid storage tank;
the pressure sensor is arranged between the liquid storage tank and the expansion valve and is electrically connected with the ECU;
an evaporator connected to the expansion valve; and
one end of the compressor is connected with the evaporator, and the other end of the compressor is connected with the condenser;
the liquefied and heated refrigerant is pressurized and then sequentially enters the evaporator through the liquid storage tank, the pressure sensor and the expansion valve;
the pressure sensor can monitor the pressure of the refrigerant flowing through in real time, and the ECU controls the cooling fan to stop running when the pressure of the refrigerant exceeds a first preset value.
2. The control system of an air conditioner for vehicles according to claim 1, wherein the ECU controls the cooling fan to be activated when the pressure of the refrigerant is lower than a second preset value.
3. The control system of an air conditioner for vehicles according to claim 1, further comprising a heat sensitive pipe having one end connected to a portion between the evaporator and the compressor and the other end connected to the expansion valve.
4. The control system of an air conditioner for vehicles according to claim 1, wherein the pressure sensor is configured to transmit the pressure of the refrigerant monitored in real time to the ECU.
5. The control system of air conditioning for vehicles according to claim 1, wherein said air blower blows air to said evaporator, said refrigerant in said evaporator absorbs heat of said air through evaporation, and said air after cooling is blown into a vehicle compartment.
6. The control system of an air conditioner for a vehicle according to claim 5, wherein the blower is electrically connected to the ECU.
7. The control system of an air conditioner for a vehicle according to claim 1, wherein said compressor is electrically connected to said ECU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011059660.9A CN112248744A (en) | 2020-09-30 | 2020-09-30 | Control system of vehicle air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011059660.9A CN112248744A (en) | 2020-09-30 | 2020-09-30 | Control system of vehicle air conditioner |
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| Publication Number | Publication Date |
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| CN112248744A true CN112248744A (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011059660.9A Pending CN112248744A (en) | 2020-09-30 | 2020-09-30 | Control system of vehicle air conditioner |
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Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002316532A (en) * | 2001-04-20 | 2002-10-29 | Denso Corp | Control device for cooling fan for vehicle |
| CN1540145A (en) * | 2003-04-21 | 2004-10-27 | 现代自动车株式会社 | Method of and device for controlling cooling fan of vehicle |
| US20060236708A1 (en) * | 2005-04-25 | 2006-10-26 | Denso Corporation | Refrigeration cycle device for vehicle |
| CN102348945A (en) * | 2009-03-31 | 2012-02-08 | 江森自控科技公司 | Control system for operating condenser fans |
| CN102529692A (en) * | 2010-11-26 | 2012-07-04 | 现代自动车株式会社 | Wind power generating system for vehicle using motor for cooling fan |
| JP2013136324A (en) * | 2011-12-28 | 2013-07-11 | Daimler Ag | Vehicle air conditioning apparatus |
| CN103334823A (en) * | 2013-07-18 | 2013-10-02 | 安徽江淮汽车股份有限公司 | Automobile electronic cooling fan control method and system |
| CN103883544A (en) * | 2012-12-20 | 2014-06-25 | 北汽福田汽车股份有限公司 | Control method and control device for engine cooling fan |
| CN103978867A (en) * | 2014-05-27 | 2014-08-13 | 武汉理工大学 | Electric automobile based multi-mode intelligent air conditioning system |
| CN104500207A (en) * | 2014-12-08 | 2015-04-08 | 广西玉柴机器股份有限公司 | Control method of electromagnetic clutch fan |
| CN105082944A (en) * | 2014-05-09 | 2015-11-25 | 现代自动车株式会社 | Method & system for controlling vehicle radiator flap |
| CN105383284A (en) * | 2014-09-05 | 2016-03-09 | 现代自动车株式会社 | Integrated cooling system control method |
| US20170370626A1 (en) * | 2015-01-30 | 2017-12-28 | Denso Corporation | Air conditioning apparatus |
| CN107848375A (en) * | 2015-11-17 | 2018-03-27 | 法雷奥日本株式会社 | The kind of refrigeration cycle of air conditioner for vehicles and the vehicle for carrying it |
| CN107989685A (en) * | 2016-10-26 | 2018-05-04 | 现代自动车株式会社 | Control device and method for the cooling fan of vehicle |
| CN207931424U (en) * | 2018-02-23 | 2018-10-02 | 江苏银河同智新能源科技有限公司 | The air-conditioning system of blocking or the pure electric vehicle to freeze can be prevented in inclement weather |
| CN108674123A (en) * | 2018-04-18 | 2018-10-19 | 浙江吉利控股集团有限公司 | A kind of control method of vehicle air conditioning, control system and vehicle |
| CN110271390A (en) * | 2018-03-16 | 2019-09-24 | 本田技研工业株式会社 | Air conditioner for vehicles |
| CN210257918U (en) * | 2019-08-09 | 2020-04-07 | 厦门金龙汽车空调有限公司 | Electric vehicle air conditioning device based on condenser internal temperature and pressure acquisition |
-
2020
- 2020-09-30 CN CN202011059660.9A patent/CN112248744A/en active Pending
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002316532A (en) * | 2001-04-20 | 2002-10-29 | Denso Corp | Control device for cooling fan for vehicle |
| CN1540145A (en) * | 2003-04-21 | 2004-10-27 | 现代自动车株式会社 | Method of and device for controlling cooling fan of vehicle |
| US20060236708A1 (en) * | 2005-04-25 | 2006-10-26 | Denso Corporation | Refrigeration cycle device for vehicle |
| CN102348945A (en) * | 2009-03-31 | 2012-02-08 | 江森自控科技公司 | Control system for operating condenser fans |
| CN102529692A (en) * | 2010-11-26 | 2012-07-04 | 现代自动车株式会社 | Wind power generating system for vehicle using motor for cooling fan |
| JP2013136324A (en) * | 2011-12-28 | 2013-07-11 | Daimler Ag | Vehicle air conditioning apparatus |
| CN103883544A (en) * | 2012-12-20 | 2014-06-25 | 北汽福田汽车股份有限公司 | Control method and control device for engine cooling fan |
| CN103334823A (en) * | 2013-07-18 | 2013-10-02 | 安徽江淮汽车股份有限公司 | Automobile electronic cooling fan control method and system |
| CN105082944A (en) * | 2014-05-09 | 2015-11-25 | 现代自动车株式会社 | Method & system for controlling vehicle radiator flap |
| CN103978867A (en) * | 2014-05-27 | 2014-08-13 | 武汉理工大学 | Electric automobile based multi-mode intelligent air conditioning system |
| CN105383284A (en) * | 2014-09-05 | 2016-03-09 | 现代自动车株式会社 | Integrated cooling system control method |
| CN104500207A (en) * | 2014-12-08 | 2015-04-08 | 广西玉柴机器股份有限公司 | Control method of electromagnetic clutch fan |
| US20170370626A1 (en) * | 2015-01-30 | 2017-12-28 | Denso Corporation | Air conditioning apparatus |
| CN107848375A (en) * | 2015-11-17 | 2018-03-27 | 法雷奥日本株式会社 | The kind of refrigeration cycle of air conditioner for vehicles and the vehicle for carrying it |
| CN107989685A (en) * | 2016-10-26 | 2018-05-04 | 现代自动车株式会社 | Control device and method for the cooling fan of vehicle |
| CN207931424U (en) * | 2018-02-23 | 2018-10-02 | 江苏银河同智新能源科技有限公司 | The air-conditioning system of blocking or the pure electric vehicle to freeze can be prevented in inclement weather |
| CN110271390A (en) * | 2018-03-16 | 2019-09-24 | 本田技研工业株式会社 | Air conditioner for vehicles |
| CN108674123A (en) * | 2018-04-18 | 2018-10-19 | 浙江吉利控股集团有限公司 | A kind of control method of vehicle air conditioning, control system and vehicle |
| CN210257918U (en) * | 2019-08-09 | 2020-04-07 | 厦门金龙汽车空调有限公司 | Electric vehicle air conditioning device based on condenser internal temperature and pressure acquisition |
Non-Patent Citations (2)
| Title |
|---|
| 李德刚等: "《汽车性能检测与故障诊断》", 30 September 2017, 东南大学出版社 * |
| 郭新民，邢娟，袁燕利，高平，王会明: "减少汽车发动机电动冷却风扇能耗的控制系统", 《节能技术》 * |
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Application publication date: 20210122 |