US 11,753,807 B2
Toilet bowl flush device
Zhongde Fan, Shanghai (CN); Li Jiang, Shanghai (CN); Tiantao Li, Shanghai (CN); Yongze Liu, Shanghai (CN); and Xiaolong He, Shanghai (CN)
Assigned to LIXIL (China) Investment Co., Ltd, Shanghai (CN)
Filed by Lixil (China) Investment Co., Ltd., Shanghai (CN)
Filed on Jun. 29, 2021, as Appl. No. 17/362,237.
Claims priority of application No. 202021247054.5 (CN), filed on Jun. 30, 2020.
Prior Publication US 2021/0404159 A1, Dec. 30, 2021
Int. Cl. E03D 1/26 (2006.01); E03D 1/38 (2006.01)
CPC E03D 1/263 (2013.01) [E03D 1/38 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A toilet (100), comprising:
a seat body (110) with a sewage accommodating bowl, wherein the sewage accommodating bowl (112) comprises a sewage accommodating surface (114) and a sewage draining exit (115) positioned at the bowl bottom, and is provided with a ring flushing port opening (117); and
a cistern (120), accommodating water for flushing the sewage accommodating bowl;
wherein the inside of the cistern (120) is provided with:
a fill valve (122), wherein water flows into the cistern (120) through the fill valve (122);
a first ring flushing pipeline (124), wherein, in a first position, a first water inlet end of the first ring flushing pipeline (124) is selectively in fluid communication with the fill valve (122); a first water outlet end (124d) of the first ring flushing pipeline (124) is in fluid communication with the ring flushing port opening (117) so as to perform ring flushing on the sewage accommodating bowl (112); the first ring flushing pipeline (124) comprises a first jet flow increasing structure; and the first jet flow increasing structure is configured to generate a negative pressure when water from the fill valve (122) flows through the first jet flow increasing structure so as to suck the water in the cistern (120) into the first ring flushing pipeline (124);
a second bottom flushing pipeline (126), wherein, in a second position, a second water inlet end of the second bottom flushing pipeline (126) is selectively in fluid communication with the fill valve (122); the second bottom flushing pipeline (126) comprises a second jet flow increasing structure; the second jet flow increasing structure is configured to generate a negative pressure when water from the fill valve (122) flows through the second jet flow increasing structure so as to suck the water in the cistern (120) into the second bottom flushing pipeline (126); and
a pipeline switching mechanism configured to automatically switch between the first position and the second position in response to a water level in the cistern (120), wherein the pipeline switching mechanism comprises a floater type actuating device (129) and a switching valve (130), the floater type actuating device configured to drive the switching valve (130) to switch between the first position and the second position.