Acid steam cleaning apparatus and acid steam cleaning method

Abstract

An acid steam cleaning apparatus for cleaning vessels using acid steam, comprising: a raw acid liquid container (1), a heater (2), a cleaning cavity (3), a double-walled tube, and a controller. The double-walled tube is installed in the cleaning cavity and has an inner tube (200) and an outer tube (300), wherein the inner tube (200) and the outer tube (300) closely contact each other; acid steam exit holes (230, 330) are provided around and/or at the upper portions of the inner tube (200) and the outer tube (300), the acid steam exit holes (230, 330) extending through the outer tube and the inner tube; the acid steam exit holes (230, 330) are in communication with the interior (220) of the inner tube (200); the interior (220) of the inner tube (200) is connected with an acid steam entry channel for forming an acid steam path; grooves (210) extending axially are provided on the outer surface of the inner tube (200); water/air entry holes (310) for water/air to enter are provided at the bottom of the outer tube (300), and water/air exit holes (320) for discharging water/air are distributed on the outer tube (300); the grooves (210) on the inner tube (200) are in communication with the water/air entry holes (310) and are in communication with the water/air exit holes (320) on the outer tube (300); the water/air entry holes (310) are connected with a water/air entry pipe for forming a water/air path. When vessels are being cleaned using acid steam, the vessels are fitted over the double-walled tube, and clean acid liquid and pure water pass through the acid steam path and the water/air path, so as to be separated from waste acid liquid, waste water, and waste air, such that the cleaning effect is improved, and the trouble of mounting and detaching components after cleaning is avoided.

Dependencies are inferred from the claim text.