Double-direct-injection ejector pipe and energy-saving burner

The utility model provides a double direct injection ejector pipe which comprises a first ejector pipe and a second ejector pipe which are arranged side by side, and the first ejector pipe is sequentially provided with a first air suction contraction cavity, an air mixing cavity and a first diffusion cavity from an inlet to an outlet; the second injection pipe is sequentially provided with a second air suction contraction cavity and a second diffusion cavity from the inlet to the outlet. According to the double-direct-injection injection pipe, the pressure of mixed gas can be stabilized, backfire is avoided, and the combustion intensity is improved. 本实用新型提供了一种双直喷引射管，包括并排设置的第一引射管和第二引射管，所述第一引射管由入口至出口依次设有第一吸气收缩腔、混气腔、第一扩压腔；所述第二引射管由入口至出口依次设有第二吸气收缩腔、第二扩压腔。本实用新型提供的双直喷引射管，能够稳定混合气体压力，避免回火，提高燃烧强度。