| 摘要 |
<p>PURPOSE: A valve is provided which changes the flow direction of a fluid in conduits, which conduct the fluid to and from, respectively, a heat exchanger. CONSTITUTION: A valve(12) comprises a rotatable valve body(18) and a surrounding valve housing consisting of a cylindrical casing(14) with end plates(13a,13b), the valve body(18) having a rotational axis coinciding with the imaginary axis of the cylindrical casing(14), and four through passages(19-22) extend through the valve body(18) so oriented that the main flow directions of the fluid are parallel with the rotational axis of the valve body(18) and such that the openings(19a-20b) in two through passages(19,20), when the valve body(18) is in a first rotational position, are right in front of two openings in the respective end plate(13a,13b) and that the openings(21a-22b) in the two other through passages(21,22), when the valve body(18) is in a second rotational position, are right in front of the openings in the end plates(13a, 13b).</p> |
