| 摘要 |
PURPOSE:To eliminate a twisting effect for achieving the reduction in the force required for changing over a valve by constituting in such a way that the axial dislocation between a plunger guide which guides a plunger and a cylinder is eliminated so that the attracting direction of the plunger is made to coincide with the sliding direction of a sliding valve. CONSTITUTION:A sliding valve 40 which slides in the axial direction inside a cylinder 33 having four conduit pipes 34, 37-39 to change over a refrigerent circuit is provided. And a plunger 43 connected to the sliding valve 40, and a plunger guide 44 which houses the plunger 43 so as to be freely slidable in the axial direction and in which the outer circumference of the flange 44a formed on the one end thereof is fitted in the end part of the cylinder 33 are provided. Further, an electromagnetic coil 47 which is fixed on the outside of the plunger guide 44 to make the plunger 43 reciprocate is provided. Thus, the axial dislocation between the plunger guide 44 and the cylinder 33 can be eliminated so that the attracting direction of the plunger 43 is made to coincide with the sliding direction of the sliding valve 40, thereby a twisting effect is eliminated to reduce the force required for changing over the valve.
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