Patent ID: 11920332
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A malodor reflux blocking unit using the cardiac valve principle installed in a drain hole to block reflux of a malodor through a drain pipe while enabling drainage, the malodor reflux blocking unit comprising:
a space providing portion inserted into the drain pipe through the drain hole and configured to provide a drain space for the drainage;
blocking portions, in a non-draining state, disposed to face each other and configured to block communication between the drain pipe and the drain space; and
intermediate portions configured to mediate connection between the blocking portions and the space providing portion,
wherein the blocking portions are radially disposed about the center of the drain space and include first blocking portions, second blocking portions, and third blocking portions disposed clockwise about the center along a drainage direction,
the first blocking portions include a first-first blocking portion and a first-second blocking portion disposed to face each other and, in a draining state, discharge the drainage water to the drain pipe through a first discharge space provided by the first-first blocking portion and the first-second blocking portion being spaced apart from each other due to the drainage water passing through the drain space,
the second blocking portions include a second-first blocking portion and a second-second blocking portion disposed to face each other and, in the draining state, discharge the drainage water to the drain pipe through a second discharge space provided by the second-first blocking portion and the second-second blocking portion being spaced apart from each other due to the drainage water passing through the drain space,
the third blocking portions include a third-first blocking portion and a third-second blocking portion disposed to face each other and, in the draining state, discharge the drainage water to the drain pipe through a third discharge space provided by the third-first blocking portion and the third-second blocking portion being spaced apart from each other due to the drainage water passing through the drain space,
the first-first blocking portion and the third-second blocking portion are integrally formed with each other, the first-second blocking portion and the second-first blocking portion are integrally formed with each other, and the second-second blocking portion and the third-first blocking portion are integrally formed with each other,
the intermediate portions include a first intermediate portion configured to connect the first-first blocking portion and the third-second blocking portion to the space providing portion, a second intermediate portion configured to connect the first-second blocking portion and the second-first blocking portion to the space providing portion, and a third intermediate portion configured to connect the second-second blocking portion and the third-first blocking portion to the space providing portion, and
the malodor reflux blocking unit further comprises closing portions radially disposed about the center of the drain space at ends of the first blocking portions, the second blocking portions, and the third blocking portions and configured to, in the non-draining state, close the first discharge space, the second discharge space, and the third discharge space.