公开(公告)号：US20140305138A1

公开(公告)日：2014-10-16

申请号：US14248648

申请日：2014-04-09

Applicant: DENSO CORPORATION

Inventor： Tsuyoshi Morimoto ,  Naoki Watanabe ,  Shigeo Nomura ,  Takuya Fuse

IPC: F25B21/00

CPC classification number: F25B21/00 ,  F25B2321/0022 ,  Y02B30/66

Abstract: A magneto-caloric effect type heat pump apparatus provides a thermo-magnetic cycle apparatus. A magnetic field modulating device has a rotary permanent magnet. By rotating the permanent magnet, magnetic field applied to a magneto-caloric element is modulated alternatively in a magnetized state and a demagnetized state. A magnetized period, when the magnetic field is applied, is shorter than a demagnetized period, when the magnetic field is removed. Thereby, it is possible to reduce weight of the magnetic field modulating device having the permanent magnet. The magneto-caloric element has a heat exchange portion which varies heat exchanging efficiency depending on flow directions of a heat transport medium. The heat exchanging efficiency in the magnetized period is higher than the heat exchanging efficiency in the demagnetized period. Therefore, it is possible to provide sufficient heat exchanging quantity even in a short magnetized period.

Abstract translation: 磁热效应式热泵装置提供一种热磁循环装置。 磁场调制装置具有旋转永久磁铁。 通过旋转永磁体，施加到磁热量元件的磁场在磁化状态和退磁状态下交替地调制。 当磁场被施加时，磁化周期比去磁期短，当磁场被去除时。 由此，能够减轻具有永久磁铁的磁场调制装置的重量。 磁热量元件具有根据传热介质的流动方向改变热交换效率的热交换部分。 磁化期间的热交换效率高于退磁期的热交换效率。 因此，即使在短时间内也可以提供足够的热交换量。