Flow path switcher and liquid detergent delivery device
US11015280B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2017 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | Jan 24, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K11/0787
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Disclosed herein is a flow path switcher, comprising a valve core, a shell and a base. The shell comprises a valve seat A, a valve seat B, a channel of valve seat A, a channel of valve seat B, an outlet and an inlet. The base comprises a valve seat C, the valve seat A and the valve seat B are located on one side of the valve core and the valve seat C is located on the other side of the valve core. Also a liquid detergent delivery device with the flow path switcher is disclosed, comprising a main channel, a piston, a one-way valve D, a one-way valve E, a detergent box A and a Venturi negative pressure generator. The flow path switcher is connected between the entrance of the Venturi negative pressure generator and the exit of the main channel, the inlet of the flow path switcher and the outlet of the flow path switcher are connected to the exit of the main channel and the entrance of the Venturi negative pressure generator, respectively, the channel of valve seat B is connected to the exit of the one-way valve D, the exit of the one-way valve D is connected to the entrance of the piston, the entrance of the one-way valve D is connected to the detergent box A, the exit of the piston …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.