PROBLEM TO BE SOLVED: To provide a steam sterilizer for soil, so designed that, a covering sheet is ballooned in a short time in feeding steam, thereby effecting the early start-up of steam sterilization to reduce energy consumption and prevent the covering sheet from thermal damage as well.SOLUTION: The steam sterilizer for soil includes the following scheme. A connective tube (5) connecting a steam feed hose (4) of a boiler with a steam jet hose (2) is provided. An ejector pipe (7) with both ends open is disposed on the outer side of the connective tube (5) and inserted into a sheet (10) covering soil (1) from the outside. The connective tube (5) and the ejector pipe (7) are connected with each other via a small-diameter discharge pipe (8), and the outlet port (8b) of the discharge pipe (8) is turned to the inward direction of the covering sheet (10) through the axis of the ejector pipe (7).COPYRIGHT: (C)2010,JPO&INPIT【課題】蒸気供給時における覆いシートの膨らみを短時間で行わせることにより、蒸気消毒の立ち上がりを早めて消費エネルギーを低減するとともに、覆いシートの熱損傷を防止る。【解決手段】ボイラの蒸気供給ホース(4)と蒸気噴出ホース(2)とを接続する接続管(5)を設け、該接続管(5)の外側方に両端が開口したエジェクター管(7)を配置するとともに、該エジェクター管(7)を、外部から土壌(1)を被覆する覆いシート(10)内に挿通し、前記接続管(5)とエジェクター管(7)とを小径の吐出管(8)により接続するとともに、該吐出管(8)の吐出口(8b)を前記エジェクター管(7)の軸心部にて前記覆いシート(10)内方向に向ける。【選択図】図1
