公开(公告)号：US20230156878A1

公开(公告)日：2023-05-18

申请号：US18098706

申请日：2023-01-19

Applicant: Sichuan University

Inventor： Huacheng Zhu ,  Fengming Yang ,  Yang Yang

IPC: H05B6/70 ,  H05B6/72

CPC classification number: H05B6/708 ,  H05B6/72

Abstract: The invention relates to the technical field of microwave heating, and more particularly to a high-efficiency heating device in a microwave chamber and a heating method thereof. A high-efficiency heating device in a microwave chamber, comprising: a heating chamber; a straight-walled waveguide with microwave asymmetric propagation function; wherein one end of the straight-walled waveguide is communicated with the heating chamber; and at least one group of unidirectional waveguide structures, which are attached to an inner sidewall of the straight-walled waveguide; wherein the unidirectional waveguide structures comprise a first medium section and a second medium section which are provided along the microwave transmission direction; wherein a dielectric constant of the first medium section gradually increases along the microwave transmission direction and has a maximum value of εmax, a dielectric constant of the second medium section is a constant value of εc, and εmax=εc.