Patent ID: 8844569
Filing Date: 2014-09-30
Classification: F16K,F25B,Y10T

Abstract:
1. An electric three-way valve comprising: an input port which is opened to a surface of a valve seat; a plurality of output ports which are disposed at the same interval and are formed as openings; and a valve core which rotates in a sliding manner in the valve seat by a driving force of a motor unit and selectively opens or closes the plurality of output ports, wherein the motor unit is attached as a separated constituent to an outside of an upper end surface of a cylindrical casing introducing refrigerant, wherein the valve seat is provided in an opening portion of a lower end of the cylindrical casing, wherein the valve core is driven by a gear unit which transmits the driving force of the motor unit and is disposed inside the cylindrical casing, wherein the cylindrical casing includes one opening portion and a side wall with an apex portion, wherein the valve seat is provided in the one opening portion, wherein the other opening portion is provided in the apex portion by the cylindrical wall portion, wherein a housing which is fixed to the cylindrical wall portion and is equipped with the motor unit is uprightly formed in the other opening portion, and wherein the housing is attached to the cylindrical casing wherein a limiting pin which comes into contact with a limiting portion of the valve core is provided in the valve seat, a pressure plate is disposed inside the cylindrical casing, and the pressure plate is fixed to an upper end of the limiting pin so as to hold the limiting pin.