| 摘要 |
It is described a device of the heat-pump type for recovering heat from domestic waste water, comprising a heat pump condenser sunk in a cistern to obtain hot water for sanitary use, while the evaporator is fitted and remains substantially always immersed in the water of a storage tank so to prevent calcareous and waste deposits on its surface that might worsen the thermic exchange. This aim is obtained by letting the water flow normally out of the storage tank through an overflow hole and starting the drainage pump only when water having a flow greater than that of the overflow hole is arriving in the storage tank. Besides, all electrical components of the control, adjustment and display means are fitted in the device close to the cistern, which being waterproof, avoids the hazard of electric shocks to the user owing to leakage. |
