KR100405482B1 - Aircon system for vehicle - Google Patents
Aircon system for vehicle Download PDFInfo
- Publication number
- KR100405482B1 KR100405482B1 KR10-2001-0064763A KR20010064763A KR100405482B1 KR 100405482 B1 KR100405482 B1 KR 100405482B1 KR 20010064763 A KR20010064763 A KR 20010064763A KR 100405482 B1 KR100405482 B1 KR 100405482B1
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- Prior art keywords
- compressor
- timer
- evaporator
- set time
- temperature sensor
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Classifications
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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
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3205—Control means therefor
- B60H1/321—Control means therefor for preventing the freezing of a heat exchanger
-
- 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
- B60H1/32—Cooling devices
- B60H2001/3236—Cooling devices information from a variable is obtained
- B60H2001/3255—Cooling devices information from a variable is obtained related to 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
- B60H1/32—Cooling devices
- B60H2001/3269—Cooling devices output of a control signal
- B60H2001/327—Cooling devices output of a control signal related to a compressing unit
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
본 발명은 자동차용 냉방 시스템에 관한 것으로서, 온도센서가 고장나는 경우를 대비하여, ECU로직을 타이머가 포함된 로직으로 새롭게 개편함으로써, 압축기의 온/오프 제어와 함께 증발기의 냉매가 통로를 막는 것을 방지할 수 있고, 부분적으로나마 에어컨을 계속 작동시킬 수 있는 장점을 제공할 수 있는 자동차용 냉방 시스템을 제공하고자 한 것이다.The present invention relates to a cooling system for automobiles, and in case the temperature sensor fails, the ECU logic is newly reorganized into a logic including a timer to prevent the refrigerant of the evaporator from blocking the passage along with the on / off control of the compressor. It is an object of the present invention to provide an automotive cooling system that can prevent and partially provide the advantage of continuing to operate the air conditioner.
Description
본 발명은 자동차용 냉방 시스템에 관한 것으로서, 더욱 상세하게는 증발기 앞쪽에 설치된 온도센서의 고장시에도, 이를 감지한 ECU의 로직으로 압축기의 작동을 제어함으로써, 온도센서의 고장시에도 에어컨이 용이하게 작동되도록 한 자동차용 냉방 시스템에 관한 것이다.The present invention relates to a cooling system for automobiles, and more particularly, even when a temperature sensor installed in front of an evaporator fails, by controlling the operation of the compressor by the logic of the ECU that detects it, the air conditioner can be easily operated even when the temperature sensor fails. A cooling system for an automobile is made to operate.
통상적으로 자동차용 냉방 시스템은 첨부한 도 2에 도시한 바와 같이, 냉매가스가 증발기에서 압축기로 흡입 압축된 후, 고온 고압의 가스상태가 되어 응축기로 보내어지고, 응축기로 보내어진 냉매는 강제 냉각되어 액화되며, 액화된 냉매는 리시버 드라이어(미도시됨)로 들어가 수분과 먼지등이 제거된 후, 팽창밸브로 흘러가고, 팽창밸브에서 고압 액상의 냉매는 급격히 팽창되고, 저온 저압의 안개상태의 냉매가 되어 증발기로 들어간다.In general, as shown in the accompanying FIG. 2, a cooling system for automobiles is refrigerant gas compressed by suction from an evaporator to a compressor, and then the gas is sent to a condenser in a state of high temperature and high pressure gas, and the refrigerant sent to the condenser is forcedly cooled. Liquefied, the liquefied refrigerant enters the receiver dryer (not shown), removes moisture and dust, and then flows to the expansion valve, where the high pressure liquid refrigerant rapidly expands, and the low temperature low pressure mist refrigerant Enters the evaporator.
이와 같이, 상기 냉매가 냉동사이클을 반복 순환하여 냉방이 이루어지되, 블로워의 작동으로 증발기의 찬공기를 실내로 송풍시킴으로써, 차량 내부의 냉방이 이루어진다.As such, the refrigerant is repeatedly circulated through the refrigeration cycle to cool the air, and by cooling the cold air of the evaporator to the room by the operation of the blower, the inside of the vehicle is cooled.
한편, 상기 증발기 앞쪽에는 온도센서가 부착되어 있는데, 이 온도센서는 증발기의 온도를 측정하여, 이를 ECU로 보내고, ECU는 수신된 온도센서의 신호에 따라 압축기의 작동을 제어해서 증발기내의 냉매가 얼어서 통로를 막는 것을 방지한다.On the other hand, a temperature sensor is attached to the front of the evaporator, which measures the temperature of the evaporator, sends it to the ECU, and the ECU controls the operation of the compressor according to the signal of the received temperature sensor to freeze the refrigerant in the evaporator. To prevent passage.
즉, 첨부한 도 3에 도시한 바와 같이, 증발기 온도가 설정값보다 낮으면 ECU는 압축기를 작동시키고, 증발기의 온도가 설정값보다 높으면 ECU는 압축기의 작동을 멈추게 하는 제어를 하게 된다.That is, as shown in FIG. 3, when the evaporator temperature is lower than the set value, the ECU operates the compressor. When the evaporator temperature is higher than the set value, the ECU controls the compressor to stop the operation of the compressor.
그러나, 상기 온도센서가 고장이 나는 경우에는 증발기 통로가 막혀서 에어컨 작동이 불가하며, 심한 경우 압축기등에 과부하가 걸려서 압축기의 손상을 초래하고, 그에따른 수리비가 많이 드는 등의 문제점이 있다.However, when the temperature sensor is broken, there is a problem that the air conditioner cannot be operated because the evaporator passage is blocked, and in severe cases, the compressor is overloaded, resulting in damage to the compressor, and the repair cost is high.
따라서, 본 발명은 상기와 같은 문제점을 감안하여 안출한 것으로서, 증발기 앞쪽에 설치된 온도센서의 고장시에도, 본 발명에 따른 ECU의 새로운 로직으로 압축기의 작동을 제어함으로써, 온도센서의 고장시에도 에어컨이 용이하게 작동되도록 한 자동차용 냉방 시스템을 제공하는데 그 목적이 있다.Therefore, the present invention has been made in view of the above problems, and even when the temperature sensor installed in front of the evaporator fails, by controlling the operation of the compressor with the new logic of the ECU according to the present invention, even when the temperature sensor fails It is an object of the present invention to provide a cooling system for an automobile which is easily operated.
도 1은 본 발명에 따른 자동차용 냉방 시스템을 나타내는 시스템도,1 is a system diagram showing an automotive cooling system according to the present invention,
도 2는 일반적인 자동차용 냉방 시스템의 작동도,2 is an operation of a typical automotive cooling system,
도 3은 자동차용 냉방 시스템에서 온도센서의 감지 순서도.3 is a detection flowchart of a temperature sensor in an automotive cooling system.
이하, 본 발명을 첨부도면을 참조로 설명한다.Hereinafter, the present invention will be described with reference to the accompanying drawings.
상기한 목적을 달성하기 위한 본 발명은:The present invention for achieving the above object is:
증발기의 앞쪽에 설치된 온도센서의 고장시, 표시등이 점등되어 센서 고장을 표시하는 단계와; 타이머가 작동함과 함께, 압축기를 작동시키는 단계와; 타이머가 설정된 시간1보다 크면, 압축기 정지 타이머가 리셋되는 단계와; 타이머가 설정된 시간1보다 작으면, 압축기가 계속 작동하는 단계와; 상기 타이머의 작동과 함께, 압축기가 작동하지 않는 경우에는 타이머가 설정된 시간2보다 크면, 압축기작동 타이머를 리셋시키는 단계와; 타이머가 설정된 시간2보다 작으면, 압축기를 정지시키는 단계로 이루어지는 로직(Logic)이 ECU에 포함되어, 상기 압축기를 반복적으로 ON/OFF시키므로서, 증발기를 통과하는 냉매가 어는 것을 방지하는 동시에 에어컨이 계속 작동되도록 한 것을 특징으로 하는 자동차용 냉방 시스템을 제공한다.When the temperature sensor installed in front of the evaporator fails, the indicator lights up to indicate a sensor failure; Operating a compressor with a timer running; Resetting the compressor stop timer if the timer is greater than the set time 1; If the timer is less than the set time 1, the compressor continues to operate; Resetting the compressor operation timer if the timer is greater than the set time 2 when the compressor is not operated together with the timer operation; If the timer is less than the set time 2, logic is included in the ECU which stops the compressor, thereby repeatedly turning the compressor on and off, thereby preventing the refrigerant from passing through the evaporator from freezing and at the same time. Provided is an automotive cooling system characterized in that it continues to operate.
바람직한 구현예로서, 상기 설정시간1,2는 각 외기온도 조건별로 맵핑(Mapping)을 실시하여 정해진 것을 특징으로 한다.In a preferred embodiment, the set time 1, 2 is characterized in that determined by performing the mapping (Mapping) for each outdoor temperature condition.
여기서 본 발명을 실시예로서, 첨부도면을 참조로 더욱 상세하게 설명하면 다음과 같다.Herein, the present invention will be described in more detail with reference to the accompanying drawings.
첨부한 도 1은 본 발명에 따른 도 1은 본 발명에 따른 자동차용 냉방 시스템을 나타내는 구성도이다.1 is a block diagram showing a cooling system for a vehicle according to the present invention.
도 1의 구성도에서 보는 바와 같이, 종래의 시스템은 증발기 앞쪽에 설치된 온도센서가 정상적인 작동중, ECU의 로직에 따라서 온도센서의 측정온도가 설정온도보다 높으면 압축기를 작동시키고, 측정온도가 설정온도보다 낮으면 압축기를 정지시키게 된다.As shown in the configuration of FIG. 1, the conventional system operates the compressor when the measured temperature of the temperature sensor is higher than the set temperature according to the logic of the ECU during the normal operation of the temperature sensor installed in front of the evaporator. Lower than it will stop the compressor.
본 발명의 시스템은 상기 온도센서가 고장나는 경우의 로직을 ECU에 새롭게 내장시킨 것으로서, 보다 상세하게는 별도의 타이머를 ECU에 내장하여, 온도센서의 고장에 따른 로직으로 타이머를 작동시킴과 함께 압축기의 온/오프를 제어하는데 있다.The system of the present invention is a new built-in logic in the ECU when the temperature sensor is broken, more specifically, by embedding a separate timer in the ECU, and operates the timer with the logic according to the failure of the temperature sensor To control the on / off.
상기 온도센서가 고장나는 경우, 상기 ECU의 로직은 다음과 같은 순서로 진행된다.If the temperature sensor fails, the logic of the ECU proceeds in the following order.
먼저, 상기 온도센서가 고장나는 경우, 센서 고장을 표시하는 표시등을 점등하여, 운전자에게 알리는 경고 단계가 진행된다.First, when the temperature sensor is broken, a warning step of informing a driver by lighting an indicator indicating a sensor failure is performed.
다음으로, 타이머가 작동함과 함께, 압축기를 작동시키는 단계를 진행시키게 된다.Next, while the timer is running, the step of operating the compressor is performed.
이때, 상기 타이머가 설정된 시간1보다 크면, 압축기 정지 타이머가 리셋되는 단계가 진행되고, 상기 타이머가 설정된 시간1보다 작으면, 압축기를 계속 작동시키는 단계가 진행되어진다.In this case, if the timer is greater than the set time 1, the compressor stop timer is reset. If the timer is less than the set time 1, the compressor is continuously operated.
또한, 상기 타이머의 작동과 함께, 압축기가 작동하지 않는 경우에는 타이머가 설정된 시간2보다 크면, 압축기작동 타이머를 리셋시키는 단계가 진행되고, 상기 타이머가 설정된 시간2보다 작으면, 압축기를 정지시키는 단계가 진행되어진다.In addition, when the timer does not operate with the operation of the timer, if the timer is greater than the set time 2, the step of resetting the compressor operation timer is in progress, and if the timer is less than the set time 2, stopping the compressor. Proceeds.
이러한 ECU의 로직(Logic)에 따라, 상기 압축기가 반복적으로 ON/OFF되므로서, 증발기를 통과하는 냉매가 어는 것을 방지하게 되고, 결국 부분적으로나마 에어컨이 계속 작동되어진다.According to the logic of the ECU, the compressor is repeatedly turned on and off, thereby preventing the refrigerant passing through the evaporator from freezing, and eventually the air conditioner continues to operate in part.
한편, 상기 설정시간1,2는 각 외기온도 조건별로 맵핑(Mapping)을 실시하여 정해진다.On the other hand, the set time 1, 2 is determined by performing the mapping (Mapping) for each outdoor temperature condition.
이와 같이, 온도센서가 고정나더라도, 타이머가 포함된 ECU의 로직으로 인하여, 압축기의 작동을 제어함으로써, 증발기의 냉매가 얼어서 통로를 막는 것을 방지하는 동시에 부분적으로나마 에어컨을 작동시킬 수 있게 된다.In this way, even if the temperature sensor is fixed, by the logic of the ECU including the timer, by controlling the operation of the compressor, it is possible to prevent the refrigerant of the evaporator freezing to block the passage and at the same time to operate the air conditioner.
이상에서 본 바와 같이, 본 발명에 따른 자동차용 냉방 시스템에 의하면, 온도센서가 고장나는 경우를 대비하여, ECU로직을 타이머가 포함된 로직으로 새롭게 개편함으로써, 압축기의 온/오프 제어와 함께 증발기의 냉매가 통로를 막는 것을 방지할 수 있고, 부분적으로나마 에어컨을 계속 작동시킬 수 있는 장점을 제공한다.As described above, according to the automotive cooling system according to the present invention, in case the temperature sensor is broken, the ECU logic is newly reorganized into a logic including a timer, thereby controlling the on / off of the compressor and controlling the evaporator. The refrigerant can be prevented from blocking the passage and provides the advantage of continuing to operate the air conditioner in part.
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KR10-2001-0064763A KR100405482B1 (en) | 2001-10-19 | 2001-10-19 | Aircon system for vehicle |
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KR10-2001-0064763A KR100405482B1 (en) | 2001-10-19 | 2001-10-19 | Aircon system for vehicle |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5543690A (en) * | 1978-09-22 | 1980-03-27 | Matsushita Electric Ind Co Ltd | Humidity controller |
KR970034403A (en) * | 1995-12-02 | 1997-07-22 | 전성원 | Air conditioning auto off device |
JP2000247127A (en) * | 1999-02-25 | 2000-09-12 | Zexel Corp | Control device for vehicle air conditioner |
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2001
- 2001-10-19 KR KR10-2001-0064763A patent/KR100405482B1/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5543690A (en) * | 1978-09-22 | 1980-03-27 | Matsushita Electric Ind Co Ltd | Humidity controller |
KR970034403A (en) * | 1995-12-02 | 1997-07-22 | 전성원 | Air conditioning auto off device |
JP2000247127A (en) * | 1999-02-25 | 2000-09-12 | Zexel Corp | Control device for vehicle air conditioner |
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