HYBRID HEAT PUMP BOILER SYSTEM

摘要

PURPOSE: A hybrid heat pump boiler system is provided to overcome mechanical limits on the performance degradation of a boiler and a heat pump by integrating the heat pump, a boiler unit, and a water tank unit. CONSTITUTION: A hybrid heat pump boiler system comprises an outdoor unit(200), a water tank unit(300), and a boiler unit(400). The outdoor unit comprises a compressor(210), a 4-way valve(220), a hot-water heat exchanger(230), first and second expansion valves(240,280), and a fan coil unit(250). The compressor compresses a refrigerant at high temperature and high pressure. The 4-way valve changes the flow of the refrigerant discharged from the compressor. The hot-water heat exchanger heat-exchanges the water in the water tank unit with the refrigerant passing through the 4-way valve. The first and second expansion valves decrease the pressure and temperature of the refrigerant passing through the hot-water heat exchanger. The fan coil unit makes the refrigerant pass, which passes through the first expansion valve for heat-exchanging. The water tank unit comprises a heat storage tank(310) and a heating water heat exchanger(320). The boiler unit comprises an exhaust gas recovery heat exchanger(401) arranged at a position where exhaust gas is exhausted; and a heat pipe(470). [Reference numerals] (AA) Gas supply;