| 摘要 |
<p>The hybrid heat pump boiler system comprises a water tank unit 300, a boiler unit 400, and an indoor 100 and outdoor unit 200 that together form a heat pump. The outdoor unit has a compressor 210 to compress a refrigerant, a 4-way valve 220 to change a flow-path of the refrigerant discharged from the compressor, a first heat exchanger 230 to allow refrigerant from the 4-way valve to pass through and exchange thermal energy with water from the water tank unit, a first expansion valve 270 to expand refrigerant from the first heat exchanger during a water and space heating operation, and a fan coil unit 250 to receive refrigerant from the first expansion valve. The boiler unit has a heat pipe 470 connected with an exhaust gas recovery heat exchanger 401. The heat pipe may pass thermal energy captured from the boiler unit to the outdoor units fan coil unit when defrosting of the coil 252 is required, for example, in winter. Alternatively, the heat pipe may pass the thermal energy to an auxiliary tank (460, figure 5). A second expansion valve 280 is provided and may be used with the indoor unit to cool an interior space.</p> |
