To suppress variation of a flow rate of liquid in a flow passage and enhance heat transfer efficiency in a liquid heating device.SOLUTION: A liquid heating device 10 includes: a first case part 22 having a spiral first flow passage 14 in which cooling water flows from an introduction part 36 provided on an outer periphery toward a center; and a second case part 24 having a spiral second flow passage 16 that is stacked on the first case part 22 and in which the cooling water flows from a center toward a derivation part 64 provided on an outer periphery. A heat transfer part 18 including a plurality of heat generating bodies 124 is provided between the first case part 22 and the second case part 24. The centers of the first case part 22 and the second case part 24 include first and second communication parts 38, 66 communicating an inner peripheral end 14b of the first flow passage 14 and an inner peripheral end 16b of the second flow passage 16 with each other.SELECTED DRAWING: Figure 2

    【課題】液体加熱装置において流路における液体の流量のばらつきを抑制して熱伝達効率を高める。【解決手段】液体加熱装置10は、外周に設けられた導入部36から中心に向かって冷却水が流れる螺旋状の第1流路14を有した第1ケース部22と、前記第1ケース部22に対して積層され中心から外周に設けられた導出部64へ向かって前記冷却水が流れる螺旋状の第2流路16を有した第2ケース部24とを備え、前記第1ケース部22と前記第2ケース部24との間には複数の発熱体124を含む熱伝達部18が設けられている。そして、第1及び第2ケース部22、24の中心には、第1流路14の内周端14bと第2流路16の内周端16bとを連通させる第1及び第2連通部38、66を備えている。【選択図】図2


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    Title :

    LIQUID HEATING DEVICE


    Additional title:

    液体加熱装置


    Contributors:

    Publication date :

    2021-03-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    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 / 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



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