Flush toilet

A flush toilet in which flush water cleanses the toilet and expels waste, the toilet comprising:

• a bowl portion having a bowl-shaped waste-receiving surface and a rim portion;
• a trap pipe connected to and extending from the bottom of the bowl portion to expel waste, and defining the initial accumulated water level of the bowl portion;
• a shelf portion formed on the waste-receiving surface and having a portion which extends above the initial accumulated water level;
• a protruding portion formed on the waste-receiving surface adjacent an upper region of the shelf portion so as to at least partially cover the shelf portion;
• a first orifice for issuing flush water on a top edge of the waste-receiving surface, forming a swirl flow on the waste-receiving surface;
• a second orifice for issuing flush water onto the second shelf portion, to discharge flush water from a gap between the protruding portion and an inner perimeter portion of the second shelf portion, the gap being positioned at a side portion of the bowl portion, to induce up and down stirring flow of flush water in the bowl portion;
• a step portion formed on a down stream area from the gap in the bowl portion and at a position lower than the gap and higher than the bottom of the bowl portion to at least partially overlap with the gap, the step portion causing a portion of the flush water discharged from the gap to be forced upward to increase the up and down stirring flow of the flush water in the bowl portion;
• a first flow path for supplying flush water to the first orifice;
• and
• a second flow path for supplying flush water to the second orifice.