Patent ID: 8641413

Claim:
A device for producing a stable and augmented flame comprising: a fluid-inducing assembly including a flow-diverting mechanism defining a flow-intake end and a flow-accelerating end and including a plurality of vanes extending spirally from the flow-intake end to the flow-accelerating end and circumferentially disposed and spaced from one another, with adjacent two vanes of the plurality of vanes including a space defined therebetween and with the space defining a passage which is spiral-shaped, and with the flow-diverting mechanism further including a covering member with an enclosed circumferential edge circumferentially surrounded, wherein each vane extending spirally in the flow-accelerating end is encircled by the covering member, and wherein each vane extending spirally in the flow-intake end is exposed to outside and not covered by the covering member; and a shield being hollow and disposed above the fluid-inducing assembly; wherein external air is induced into each passage through the flow-intake end, flows therealong and exits from the flow-accelerating end and into the shield thereafter, wherein the external air is directed by the passages, is swirled and is accelerated, with the flow-accelerating end accelerating the external air, wherein a flame produced in the device is swirled with a height thereof augmented while a shape thereof is maintained stable, and wherein the flow-intake end is located at a lower position only and the flame is located at a higher position.