Siphon-type closestool and pressure generation device

Abstract

The invention discloses a siphon-type closestool which comprises a water tank and a siphon bend. An upper trap, a lower trap and a gas cavity between the upper trap and the trap are arranged in the siphon bend, and the water tank is provided with the pressure generation device which is connected with the gas cavity through a gas passage. When the water tank drains water, the pressure generation device generates negative pressure and extracts gas in the gas cavity; the pressure generation device comprises a gas release port communicated with the gas passage, a one-way valve for controlling opening and closing of the gas release port and a time delay mechanism matched with the one-way valve. During water incoming of the water tank and a period of time after water incoming is finished, gas in the gas cavity and the pressure generation device are discharged through the one-way valve, and air pressure in the gas cavity is enabled to be lower than or equal to atmospheric pressure, so that the problem that the lower trap abnormally sounds when pressure gas is discharged from the lower trap of the closestool is solved, and trouble caused to a user by noise of the closestool is avoided.

Description

technical field [0001] The invention relates to the field of sanitary ware, in particular to a siphon type toilet and a pressure generating device. Background technique [0002] The flushing principles of toilets on the market are basically two types: direct flush and siphon. The Chinese patent with publication number CN101730775A discloses a siphon toilet, which utilizes the auxiliary siphon function of a negative pressure generating device to further improve the flushing effect of the toilet. The structure of this type of toilet mainly includes a toilet seat and a water tank. Specifically, the siphon bend used for sewage discharge in the toilet seat generally has double storage bays, and there is an air cavity between the upper and lower double storage bays. The negative pressure generating device provided in the toilet tank is connected to each other. When draining, the negative pressure generating device sucks the air in the air cavity between the double storage bay wat...

AI Technical Summary

Problems solved by technology

However, when the above-mentioned toilet has discharged a water, that is, in the process of refilling the water tank, the gas in the negative pressure generating device is compressed, the air pressure increases, and positive pressure gas is formed in the air cavity, and the gas is discharged from the lower storage bay of the toilet. Exhaust the gas, which will make a "gurgling" sound at the lower storage bay, causing unnecessary noise troubles to users

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