| CPC F16K 11/165 (2013.01) [B60H 1/00814 (2013.01); F16K 11/085 (2013.01); Y10T 137/86863 (2015.04); Y10T 137/86871 (2015.04)] | 6 Claims |
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1. A switching device provided in a heat management circuit through which a heat transfer medium flows, the switching device comprising:
at least one valve element unit; and
a plurality of flow pipes connected to the at least one valve element unit, wherein
the flow pipes include a plurality of first flow pipes, and a plurality of second flow pipes,
the at least one valve element unit includes
a first valve element that is disc-shaped,
a second valve element that is disc-shaped and that is disposed on one side of the first valve element in an axial direction in which a rotation center line extends, and that is provided so as to be rotatable relative to the first valve element about the rotation center line, and
a third valve element that is disc-shaped and that is provided so as to be interposed in the axial direction between the first valve element and the second valve element, and that is provided so as to be relatively rotatable about the rotation center line with respect to the first valve element,
the first valve element includes
an outer peripheral wall that extends annularly about the rotation center line,
an inner peripheral wall that extends annularly about the rotation center line, and that is also situated closer to the rotation center line than the outer peripheral wall, and
a plurality of partition walls fashioned to connect the inner peripheral wall and the outer peripheral wall,
the first valve element is provided with a plurality of first groove portions, each of which is fan-shaped, and fashioned by the partition walls between the outer peripheral wall and the inner peripheral wall,
each of the first groove portions includes a first opening that opens to a second valve element side, and a second opening that is fashioned in the outer peripheral wall,
the second openings of part of the first groove portions enable the heat transfer medium to flow into the first valve element through the first flow pipes, and also the second openings of part of a remainder of the first groove portions enable the heat transfer medium to flow out from the first valve element through the second flow pipes,
the second valve element is provided with a plurality of second groove portions, each of which is fan-shaped, and fashioned extending circumferentially about the rotation center line, and that also open toward the first valve element,
the third valve element is provided with a plurality of through holes that passes through the third valve element in the axial direction, and that is also arranged circumferentially arrayed about the rotation center line, and
by each of the second valve element and the third valve element being rotated relative to the first valve element, overlapping states of each of the first openings of the first groove portions, the second groove portions, and the through holes, in the axial direction, are switched.
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