Stop valve and air conditioner having the same

An air conditioner, comprising a stop valve, wherein the stop valve comprises:

• a valve seat defining a valve chamber and a fitting chamber in communication with the valve chamber, wherein the fitting chamber is located at a first end face of the valve chamber and the valve chamber is provided with two ports in communication with the valve chamber;
• a lantern ring fitted in one of the two ports and engaged with an inner wall of the one of the two ports;
• a valve disc comprising a fitting part and a stopping part disposed to the fitting part, wherein the fitting part is threadedly fitted with the fitting chamber, the thread fit between the fitting part and the fitting chamber allowing the fitting part to move back and forth in the fitting chamber, the stopping part being located in the valve chamber and threadedly fitted with an inner wall of the valve chamber, a thread fit between the stopping part and the valve chamber allowing the stopping part to move back and forth in the valve chamber, and the stopping part being configured to touch the first end face or the lantern ring to communicate or block the two ports;
• an elastic sealing member disposed at an end face of an outer periphery of the stopping part facing the lantern ring and configured to touch an end face of the lantern ring to block a communication of the two ports;
• and
• a fastening washer and a fixing member, wherein the fixing member passes through the fastening washer and the elastic sealing member successively to be fixed to the valve disc;
• and, wherein
• the elastic sealing member is provided with a groove for receiving the fastening washer, and an end face of the elastic sealing member facing the lantern ring is flush with an end face of the fastening washer.