Patent ID: 7965929

Claim:
A heat recovery device, comprising: at least one thermally insulated tank provided with an inlet for recovering warm water from domestic or industrial drains and with an outlet for draining toward a sewer; a first diverter valve for controlling said inlet; a thermostat for controlling said first diverter valve; said inlet being connected to the sewer; a second quick-opening and quick-closing valve for controlling said outlet; a tube or set of tubes provided inside said tank for containing water arriving from water mains or well for being sent to water heating devices; sediment removal means arranged at said tank for removing sediment therefrom; and an overflow outlet provided connected to said tank, wherein said tank is provided with a first intake pipe, for recovering a flow of warm water that arrives from drains of industrial or domestic appliances, said first intake pipe being arranged proximate to an upper end of said tank, said diverter valve being provided at said first pipe, in a region which is adjacent and upstream of the inlet in said tank, and being suitable to allow either passage of water flow that arrives from drains of domestic devices into said tank or forced and non-forced water passage to a second drain pipe for sewer draining, a thermostatic sensor being arranged upstream of said first diverter valve for controlling activation of said first diverter valve and which is suitable to check temperature of water flow that arrives from drains of domestic or industrial appliances in order to cheek whether the checked temperature is at a higher or lower value than a temperature of water contained in said tank; and a thermometer arranged at a trap located at an upper end of said tank for measuring the temperature of the water contained in said tank.