To suppress a thermal effect of PTC elements and enhance durability of a frame member.SOLUTION: A heat medium heating device 25 includes a PTC heater 33 for heating a heat medium in a heat medium flow path formed in a casing 31. The PTC heater 33 includes a plate-like PTC element 61, a plate-like type heater main body 60 having a first electrode plate 62 and a second electrode plate 63 which are laminated on both sides of the PTC element 61, a frame member 80 which is made of an insulating material and provided so as to surround the side surface of the heater main body 60, and a gap forming portion which is formed in at least one of the heater main body 60 and the frame member 80, and contacts a part of the side surface of the heater main body 60 so as to form a gap 88 between the side surface of the heater main body 60 and the inner side surface of the frame member 80. When viewed along a thickness direction, gaps 88 are formed on both sides of the gap forming portion.SELECTED DRAWING: Figure 8
【課題】PTC素子による熱影響が及ぶのを抑え、枠部材の耐久性を高める。【解決手段】熱媒体加熱装置25は、ケーシング31に形成された熱媒体流路内の熱媒体を加熱するPTCヒータ33を備える。PTCヒータ33は、板状のPTC素子61、及びPTC素子61の両側に積層して設けられた第一電極板62及び第二電極板63を有する平板状のヒータ本体60と、ヒータ本体60の側面を取り囲むように設けられた絶縁材料からなる枠部材80と、ヒータ本体60及び枠部材80の少なくとも一方に形成され、ヒータ本体60の側面と枠部材80の内側面との間に間隙88を形成するように、ヒータ本体60の側面の一部と接触する間隙形成部と、を有する。厚み方向から見た際に、間隙形成部の両側に間隙88が形成されている。【選択図】図8
HEAT MEDIUM HEATING DEVICE AND AIR CONDITIONER FOR VEHICLE
熱媒体加熱装置及び車両用空調装置
02.04.2020
Patent
Elektronische Ressource
Japanisch
IPC: | H05B ELECTRIC HEATING , Elektrische Heizung / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / F24H FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, IN GENERAL , Erhitzer für flüssige oder gasförmige Stoffe, z.B. Wasser- oder Lufterhitzer mit Vorrichtungen zur Wärmeerzeugung, allgemein |
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