Device for recovering heat from waste water of sewer pipe of e.g. household application, has switch valve switching outlet of sewer pipe, when temperature of temperature sensor exceeds temperature at storage tank around preset difference

摘要

The device has a switch valve (7) connected with a sewer pipe and a drain pipe (3), and a temperature sensor (12) arranged in a wastewater inlet (2). Another temperature sensor (11) is arranged in a storage tank (1), and the switch valve switches an outlet of the sewer pipe, when temperature of the temperature sensor (12) in the sewer pipe exceeds temperature at the storage tank around a predetermined difference. The switch valve switches an outlet to a drain pipe. A storage drain pipe (13) is guided from a lower part of the storage tank into the drain pipe. An independent claim is also included for a method for operating a device for heat recovery.