Dry cleaning casing, dry cleaning apparatus and attachment method of screen plate

A method of attaching a screen plate for a dry cleaning casing of a dry cleaning apparatus useable for cleaning a cleaning target by impacting a cleaning member to the cleaning target by flying the cleaning member using an air flow,

• the dry cleaning casing including
• a casing body including
• an internal space, connected to a suction unit, for flying the cleaning member;
• an opening to which the cleaning target is contacted to collide the cleaning member to the cleaning target;
• and
• an air introduction route to introduce external air to the internal space, by sucking air from the internal space while the opening is closed by the cleaning target, to generate rotating air flow for flying the cleaning member;
• a flow restriction member to define a rotation axis of rotating air flow in the internal space, the flow restriction member having an inner space communicated to the internal space and used as a suction route for the suction unit;
• and
• a screen plate made of a porous plate to block movement of the cleaning member to the suction unit and to pass through substance removed from the cleaning target, the screen plate disposable on the flow restriction member along an outer face of the flow restriction member,
• the method comprising the steps of:
• inserting the screen plate from the opening of the casing body;
• and
• inserting with pressure a front end of the screen plate into a guide member formed along a flow restriction member to attach the screen plate along an outer face of the flow restriction member.