Patent ID: 8857788

Claim:
An electronic expansion valve, comprising: a main body having a small hole for expanding a refrigerant; an armature disposed in the main body and including an adsorption portion, a central portion disposed under the adsorption portion, and a valve body disposed under the central portion and opening and closing the small hole; an elastic member urging the valve body to close the small hole, the elastic member being disposed in the main body and fixed to a side portion of the armature; and a solenoid moving the valve body in a direction away from the small hole to open the small hole, the solenoid being arranged at a side of the main body laterally away from a moving direction of the valve body, wherein the elastic member is a disc spring having a plurality of slits formed in a spiral form in a disc board and disposed at mutually equal pitches, and wherein the main body includes an upper portion made of a ferromagnetic cylindrical member and having an inflow portion, a suction portion extending downwardly from the upper portion, and a lower portion disposed under the suction portion and having a space to receive the armature therein so that when the solenoid is actuated, the suction portion is activated to draw the armature.