초록 ▼

A zone valve hot water recirculation system in accordance with the present invention generally includes a hot water source, such as an electric or gas water heater, a conduit for enabling circulation of hot water from hot water source to one or more plumbing fixtures and recovery of water to the hot

A zone valve hot water recirculation system in accordance with the present invention generally includes a hot water source, such as an electric or gas water heater, a conduit for enabling circulation of hot water from hot water source to one or more plumbing fixtures and recovery of water to the hot water source, a pump for accelerating delivery of hot water to the fixtures and, importantly, a zone valve for preventing flow of water into the hot water source during standby periods of the hot water source. A controller, which may include an electronic timer, is provided for causing the zone valve to open and close and the pump to start and stop.

대표청구항 ▼

[ What is claimed is:] [1.] A hot water recirculation system comprising:a hot water source;conduit means, in fluid communication with the hot water source and at least one plumbing fixture having a hot water valve, for enabling circulation of hot water from said hot water source to the plumbing fixt

[ What is claimed is:] [1.] A hot water recirculation system comprising:a hot water source;conduit means, in fluid communication with the hot water source and at least one plumbing fixture having a hot water valve, for enabling circulation of hot water from said hot water source to the plumbing fixture and return to said hot water source;pump means for circulating hot water through the conduit means;zone valve means, disposed on the conduit means, for preventing a flow of water through the conduit means from said hot water source to the plumbing fixture, and for preventing a flow of water from the plumbing fixture to the hot water source;switch means for generating a control signal; andcontrol means for causing the zone valve means to open and allow water flow there through in response to the control signal.