| CPC F16K 27/0263 (2013.01) [F16K 11/074 (2013.01); F16K 31/043 (2013.01); F16K 31/535 (2013.01); F16K 11/10 (2013.01); F16K 15/00 (2013.01); F25B 41/20 (2021.01); F25B 47/00 (2013.01); F25B 47/006 (2013.01); F25D 21/04 (2013.01)] | 15 Claims |
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1. A valve device comprising:
a case having an open bottom portion and a receiving space formed therein;
a rotor arranged in the receiving space and including a rotor shaft;
a pinion gear rotatably coupled to the rotor shaft and to be rotated along with the rotor;
a pad gear arranged on a side of the pinion gear to be engaged with the pinion gear, and to be rotated by the pinion gear, the pad gear including a pad valve shaft, which is a rotation shaft of the pad gear;
a base plate to cover the open bottom portion of the case;
a flow-in pipe coupled to the base plate to introduce a-refrigerant to the receiving space therethrough;
a boss installed to the base plate, and including a plurality of refrigerant flow-in/out holes through which the introduced refrigerant flows in/out;
a plurality of flow-in/out pipes coupled to the plurality of refrigerant flow-in/out holes and through which the introduced refrigerant flows in/out; and
a pad arranged on the boss and rotatably coupled to the pad valve shaft so that the pad is rotatable with respect to the boss, the pad including:
an open cavity formed therein to selectively open one of the plurality of refrigerant flow-in/out holes, and
a connection cavity formed therein to selectively connect to one or two of the plurality of refrigerant flow-in/out holes,
wherein the connection cavity is a closed cavity which is not directly opened to the receiving space, and
the open cavity and the connection cavity are formed on a bottom surface of the pad facing the boss.
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