| 摘要 |
<p>The present invention discloses a micro channel heat exchanger (2), which micro channel heat exchanger (2) is a hydraulic reversibility for evaporator or condenser. The heat exchanger (2) comprises at least one inlet distribution tube (4) connected to the inlet. It is an object of the invention to perform automatic change from condensation into evaporation. A further object of the invention is to achieve effective evaporation in a micro channel evaporator (2) designed for both condensation and evaporation. The object can be fulfilled in that the inlet distribution tube (4) comprises an inner tube (12) which inner tube (12) is connected to the inlet (4) which heat exchanger (2) comprises at least one valve (14), which valve (14) by condenser operation is open for flow from the inner tube (12) to the distribution tube (8). Hereby the possibility to change between two different modes of operation can be achieved. In condenser operation mode there is a traditional mostly open flow through the heat exchanger (2). The pressure of the refrigerant is relative high because the refrigerant has just left, probably, a compressor, in operation as an evaporator, a distribution of the liquid flow is necessary.</p> |
