Abstract: A terminal connection structure includes a terminal and an enameled wire. The terminal includes a socket and a conductor crimping portion. The conductor crimping portion includes a first crimping area and a second crimping area, and the first crimping area and the second crimping area are both U-shaped before crimped. The enameled wire is located in the first crimping area and the second crimping area, wherein the enameled wire includes three conducting wires and an enameled film covering the conducting wires. The first crimping area and the second crimping area are crimped to be in a shape of a semi-circular thereby crimping the three conducting wires tightly. Wherein an outer width of the second crimping area after crimped is W2, an outer diameter of the enameled wire is D, a thickness of the second crimping area is t, and the following condition is satisfied: W2?D×0.8+2t.

Abstract: A compressor overload protection device utilizes a first electrode of an electric connector to electrically connect a first OLP overload protection loop that is electrically connected to a first power line of an external power source. In addition, a second OLP overload protection loop is connected to a second electrode and a third electrode of the electric connector, and a capacitor is electrically connected between the third electrode and the first electrode. When the operation of the compressor is overloaded, the first and second OLP overload protection loop can provide proper protection mechanism with respect to the first power line and the second power line to prevent a motor of the compressor from being overheated and damaged, and the electrodes of the electric connector can be effectively prevented from exploding.

Abstract: A motor having more magnets on effective area of the rotor includes a stator, a rotor and a rotation shaft, the rotor has a plurality number of rotor magnetic poles, a magnet is installed inside each of rotor magnetic pole, and a concave arc is on the outer side of each magnet and forms the first, the second and the third surfaces near inside of each magnet. The concave arc connects to the first and the third surfaces with a connecting plan respectively, each connecting plan nears the periphery surface of the rotor. The motor has more magnets on the effective area of the rotor for higher motor efficiency.

Abstract: A compressor overload protection device utilizes a first electrode of an electric connector to electrically connect a first OLP overload protection loop that is electrically connected to a first power line of an external power source. In addition, a second OLP overload protection loop is connected to a second electrode and a third electrode of the electric connector, and a capacitor is electrically connected between the third electrode and the first electrode. When the operation of the compressor is overloaded, the first and second OLP overload protection loop can provide proper protection mechanism with respect to the first power line and the second power line to prevent a motor of the compressor from being overheated and damaged, and the electrodes of the electric connector can be effectively prevented from exploding.