Microwave heating device and microwave guiding tube thereof

A microwave heating device comprising:

• a microwave guide tube forming a wave travelling path and having
• at least one heating segment and each one of the at least one heating segment having
• a front opening wall;
• a rear opening wall disposed at a spaced interval with the front opening wall along a conveying direction;
• a top wall connected to the front opening wall and the rear opening wall;
• and
• a bottom wall connected to the front opening wall and the rear opening wall and facing the top wall;
• at least one conveying opening pair, and each one of the at least one conveying opening pair having two conveying openings respectively formed through the front opening wall and the rear opening wall of the at least one heating segment;
• at least one waveguide plate pair disposed in the at least one heating segment, and each one of the at least one waveguide plate pair having
• a position corresponding to a position of the at least one conveying opening pair along the wave travelling path;
• and
• two waveguide plates respectively disposed on the top wall and the bottom wall of the at least one heating segment, extending along the wave travelling path, and made of a dielectric material;
• two microwave transmitting modules respectively disposed on two opposite ends of the microwave guide tube along the wave travelling path;
• and
• a transmission module extending through the at least one conveying opening pair along the conveying direction.