ENERGY-SAVING DEVICE FOR OIL OR GAS-FIRED BOILER

摘要

Disclosed in the present utility model is an energy-saving device for an oil or gas-fired boiler, comprising a cylindrical outer barrel and a water pipe disposed within said outer barrel, a smoke inlet and a smoke outlet being connected onto the outer barrel, and a water inlet and a water outlet being disposed on the water pipe; a helical smoke channel is disposed within the outer barrel, one end of said helical smoke channel being connected to the smoke inlet, and the other end being connected to the smoke outlet; the water pipe comprises a central water pipe disposed in the centre of the outer barrel and a peripheral water pipe surrounding the outside of the central water pipe; the helical smoke channel is enclosed by the inner wall of an inner barrel, the outer water of the central water pipe, and a helical partition plate connected to the inner wall of the inner barrel and the outer wall of the central water pipe; and the water pipe penetrates the helical partition plate from the top to the bottom.