AIR CONDITIONING CONTROL DEVICE FOR VEHICLE

To provide an air conditioning control device for vehicle capable of realizing high pressure cut control that can reduce an occurrence of problems due to heat storage in a clutch.SOLUTION: An air conditioning control device 1 for vehicle controls a drive state of a compressor 3 which is operated via...

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Bibliographische Detailangaben
1. Verfasser: TAKEO KATSUYA
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide an air conditioning control device for vehicle capable of realizing high pressure cut control that can reduce an occurrence of problems due to heat storage in a clutch.SOLUTION: An air conditioning control device 1 for vehicle controls a drive state of a compressor 3 which is operated via an electromagnetic clutch 5 by power of an engine 2. The air conditioning control device 1 for vehicle includes: a pressure sensor 22 that detects a pressure of refrigerant compressed by the compressor 3; a disconnection control unit 21f that disconnects the electromagnetic clutch 5 to stop the compressor 3 when the refrigerant pressure P detected by the pressure sensor 22 exceeds a pressure threshold Pth; a timekeeping unit 21g that measures a time T elapsed since the electromagnetic clutch 5 was disconnected; and a connection control unit 21h that connects the electromagnetic clutch 5 to drive the compressor 3 when the elapsed time T measured by the timekeeping unit 21g reaches a time threshold Tth.SELECTED DRAWING: Figure 2 【課題】クラッチの蓄熱による不具合の発生を低減することができる高圧カット制御を実現可能な車両用空調制御装置を提供する。【解決手段】車両用空調制御装置1は、エンジン2の動力により電磁クラッチ5を介して作動するコンプレッサー3の駆動状態を制御する。この車両用空調制御装置1は、コンプレッサー3で圧縮された冷媒の圧力を検出する圧力センサー22と、圧力センサー22で検出された冷媒の圧力Pが圧力閾値Pthを超えたとき、電磁クラッチ5を切断してコンプレッサー3を停止させる切断制御部21fと、電磁クラッチ5を切断してからの経過時間Tを計測する計時部21gと、計時部21gで計測された経過時間Tが時間閾値Tthに達したとき、電磁クラッチ5を接続してコンプレッサー3を駆動させる接続制御部21hと、を備えている。【選択図】図2