| 摘要 |
<p>The pump has a refrigerant circuit with a compressor (1), a ground collector (4) and a heat exchanger (3) that is arranged between a refrigerant and a heat carrier. A switching device (2) is arranged for switching between heating and cooling modes of the refrigerant circuit. The circuit exhibits discrete admission lines (8, 9) with expansion valves (6, 7) as a function of heating or cooling mode for admission of the ground collector or the heat exchanger. A bypass line (18) with throttle effect is provided for the expansion valves in the admission lines for the heat exchanger.</p> |
