提出一种带回热的新型节能燃气灶，即采用回热循环来提高燃气灶的热效率。
A new type of energy saving gas stove with heat recovery is proposed, which adopts heat regenerative cycle to improve gas stoves thermal efficiency.
采用这些技术后，提高了炉子的自动化程度、炉子热效率和热处理水平。
After making use of these new tech-nics, the automation level, thermal efficiency and heat treatment level of furnace are raised.
采用三电平拓扑的两电平输出模式，提高了加热效率，简化了控制方案。
For improving the efficiency and simplifying the control strategy, the paper USES the method of two level output in three level topology.
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