| 摘要 |
A valve driving device comprises an electric multi-way valve which simultaneously drives a plurality of valve bodies. A pinion 17 which is integral with a rotor of a motor for controlling a three-way valve 12 is a driving gear. Driven gears 20A and 20B which mesh with the driving gear are disposed substantially symmetrically with respect to a shaft of the driving gear. Valve bodies 24A and 24B provided on lower surfaces of the driven gears 20A and 20B slide on valve seats provided on valve seat plates 13. Communication holes (valve openings) 25A and 25B for a refrigerant outflow pipe which are welded to the valve seat plates 13 are opened or closed to interrupt or open a flow-path from an inflow hole 27. The two communication holes 25A and 25B can select the following four modes for the inflow hole 27: (a) A and B are opened, (b) A is opened and B is closed, (c) A and B are closed, and (c) A is closed and B is opened. |
