| 摘要 |
The invention relates to a valve arrangement having a changeover valve with a housing (7) with at least four connection pipes (8) connected to a heat pump, with at least four connection pipes (9), each at least two of which are respectively connected to a heat source and a heat sink, with at least one valve body (10) and with a drive element for moving the valve body in the housing relative to the different connection pipes, and further comprises a heat exchanger (2) connected during heating operation to the source side of the heat pump, in which heat exchanger a flow direction reversal of the heat exchanging medium can be generated when there is a changeover between heating operation and cooling operation. |
