Freeze prevention valve capable of controlling discharge flow rate according to temperature
US11078651B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 2019 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Dec 23, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/1353
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present invention relates to a freeze prevention valve capable of controlling a discharge flow rate according to a temperature. More particularly, the present invention relates to a freeze prevention valve capable of controlling a discharge flow rate according to a temperature, wherein the valve is to prevent freezing of a pipe by allowing a working fluid such as water flowing along various pipes including water pipes, faucets, and water meters to continuously flow without freezing at a temperature below a freezing point, and a shape memory elastic body which is a configuration of the valve can control a flow rate of the working fluid flowing out of the valve by proportionally changing a yield stress by a phase change according to a temperature of the working fluid instead of performing a simple opening/closing operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.