| 摘要 |
PURPOSE: A service valve for a cooling device is provided to reduce the number of pipes of a valve main body by comprising a spindle as a non-rotation structure or a limited rotation structure for charge and by opening a first supply pipe with ascent and descent operation of the spindle. CONSTITUTION: A service valve for a cooling device comprises a spindle(2), a valve body, an ascent and descent control nut member(4), and a fixing ring member(5). The spindle forms a core installation pipe and accommodates a valve core. The spindle comprises a refrigerant distribution pipe, a refrigerant inlet(22), and a plane unit. The refrigerant inlet forms a connection unit for a refrigerant charging device and a screw. A connection screw unit and a plane for preventing rotation are formed on a circumference of the plane unit as over one kind. The valve body accommodates the spindle and forms a lifting device installation groove(11) forming a groove on the upper part. The valve body forms the plane unit facing the plane unit of the spindle inserted into the spindle installation pipe on the lower part. The ascent and descent control nut member in inserted into the lifting device installation groove of the valve body and rotates in place. The fixing ring member prevents the ascent and descent control nut member from being separated. |
