Instantaneous hot water control device
US5819785A · kind A · utility
Inventor
Key dates
| Filing date | Apr 22, 1997 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Apr 22, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7909
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A convective flow control device that can maintain hot water at hot water pipe connections at remotely located faucets in homes and buildings. The convective flow device has a two part housing that encloses a dual purpose poppet in an internal circular bored chamber formed by the two piece housing. The said internal circular bored chamber has one or more fluid passageways that communicate with the hot and cold water end of the device, thereby providing for a flow path from the hot water connection to the cold water connection. The said dual purpose poppet has a cylindrical shape, and slides within the internal circular chamber to make contact with the cold water end of the housing, or to make contact with the hot water end of the housing in response to the direction of flow through the device. The dual purpose poppet has a flat side that can prevent flow through the device by closing off the said fluid passageways, in response to flow from the cold water end of the device, and an orifice through the center of the dual purpose poppet controls the convective flow rate through the device from the hot water end of the device. The said orifice drilled through the dual purpose poppet has…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.