Patent ID: 9605421
Date: 2017-03-28
CPC Classifications: E03D

Claim:
1. A siphon toilet, comprising: a toilet body; a water tank; an eject water channel used for flushing a bottom of the toilet body, the eject water channel being arranged between the toilet body and the water tank; a brushing water channel used for brushing a washable surface of the toilet body with water, the brushing water channel being arranged between the toilet body and the water tank; and a siphon channel used for removing pollution and being arranged at the bottom of the toilet body; and a first drain valve being arranged in the water tank; a common channel under the first drain valve; an isolating wall arranged at a position where the common channel protrudes towards the washable surface, the isolating wall isolating the brushing water channel from the eject water channel; and a check valve arranged on the isolating wall to be between the eject water channel and the brushing water channel, the check valve has a first state and a second state, in the first state the check valve is opened when the water tank is at a draining state, so that water flows through both the eject water channel and the brushing water channel, and in the second state the check valve is shut when the water tank is at a non-draining state, so that the eject water channel and the brushing water channel are hermetically isolated from each other, wherein when the brushing water channel is not brushing the washable surface, the check valve is in the second state and a water seal is formed by the siphon channel so that an inlet of the eject water channel is isolated from outside air, so that the outside air cannot be communicated to the inlet of the eject water channel, further wherein an upper end of an outlet of the eject water channel is lower than an upper part of the siphon channel, and further wherein, when the brushing water channel is not brushing the washable surface, reserved water is stored in the eject water channel for flushing the bottom of the toilet body at a next flushing time in which the toilet is flushed.