Swirl flush toilet without rim and direct drain

Abstract

A rimless vortex flush toilet with direct drain, comprising a main body with a bowl (10); wherein the bowl (10) has an upper rim vertical plane (11), a lower dirt collection chamber (20), an annular drain / slide surface (12) connected between a lower edge of the rim vertical plane (11) and an upper edge of the dirt collection chamber (20), and a drain pipe (30) connected to a chamber floor of the dirt collection chamber (20) to discharge wastewater to the rear; wherein a water supply opening (13) is arranged on a rear side of the bowl (10) in the rim vertical plane (11), serving to expel water in a nearly horizontal direction to form a vortex water flow on an inner circumferential surface of the rim vertical plane (11);characterized in that the drain / slide slope surface (12) is arranged low at the front and high at the rear, and a guide edge (40) and a retention basin (50) are formed in a front area of ​​the bowl (10), extending from the drain / slide slope surface (12) and inclined downwards towards an opening of the debris collection shaft (20) to drain water; wherein the guide edge (40) and the water inlet opening (13) are located on opposite sides of a center line (CL) in a width direction of the bowl (10); wherein the guide edge (40) adjoins a downstream side of the retention basin (50) to retain a water flow and raise a backed-up water level in the retention basin (50).