VEHICULAR AIR CONDITIONER

• Main Authors: YANAGIMACHI YOSHINOBU, UESUGI YOSHIHIKO, HIRAYAMA JUNKI, YOKOO YASUHIRO, TANIHATA TAKUYA
• Format: Patent
• Language: English; Japanese
• Published: 21.06.2022
• Subjects: ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

To provide a vehicular air conditioner which determines whether the cooling of a device to be cooled functions normally, and which can detect the occurrence of an error about a decompression part for cooling and a decompression part for heating.SOLUTION: A vehicular air conditioner 1 includes a compressor 11, a heating part 25, an expansion valve 14a for heating, an outdoor heat exchanger 16, an expansion valve 14b for cooling, and an indoor evaporator 18. Further, the vehicular air conditioner 1 includes an expansion valve 14c for cooling, a heat exchange part 19 for cooling, an on-off valve 15a for dehumidification, an on-off valve 15b for heating, and a control device 60. The control device 60 includes a first determination part 60c, a changeover control part 60b, and a second determination part 60d. When it is determined by the second determination part, through the first determination part 60c and the changeover control part 60b, that a high-pressure state occurs, a heating-side error signal is output. When it is determined, through the first determination part 60c and the changeover control part 60b, that the high-pressure state does not occur, a cooling-side error signal is output.SELECTED DRAWING: Figure 3 【課題】冷却対象機器の冷却が正常に機能するか否かを判定すると共に、冷房用減圧部及び暖房用減圧部に関するエラーの発生を検知できる車両用空調装置を提供する。【解決手段】車両用空調装置１は、圧縮機１１と、加熱部２５と、暖房用膨張弁１４ａと、室外熱交換器１６と、冷房用膨張弁１４ｂと、室内蒸発器１８を有している。更に、車両用空調装置１は、冷却用膨張弁１４ｃと、冷却用熱交換部１９と、除湿用開閉弁１５ａ、暖房用開閉弁１５ｂと、制御装置６０と、を有している。制御装置６０は、第１判定部６０ｃと、切替制御部６０ｂと、第２判定部６０ｄと、を有している。第１判定部６０ｃ、切替制御部６０ｂを経て、第２判定部によって高圧状態であると判定された場合には、暖房側エラー信号を出力する。第１判定部６０ｃ、切替制御部６０ｂを経て、高圧状態ではないと判定された場合、冷房側エラー信号を出力する。【選択図】図３