| 摘要 |
PURPOSE: A hybrid boiler is provided to smoothly drive an electrode boiler even at low temperature by exchanging the heat from a heating source of a heat pump to the electrode boiler. CONSTITUTION: A hybrid boiler (100) comprises a heat pump (10), a heating unit (20), a heating source supply unit, an auxiliary heating source supply unit, and a thermal storing tank (50). The heat pump is connected to a compressor (11), a condenser (12), an expansion valve (13), an evaporator (14), and a liquid separator (15). An electrode boiler (22) which is operated by receiving a heating source is connected to the heating unit by a second connecting pipe (23). A heating source tank and a second heat exchanger are connected to the heating source supply unit by a third connecting pipe. The auxiliary heating source supply unit includes an auxiliary evaporator formed on first and second bypass lines. The thermal storing tank is connected to the electrode boiler and a fourth connecting pipe (51). |
