Heat engine device for realizing heat energy-mechanical energy conversion by using shape memory alloy

• Main Authors: YANG HAO, LIN NAN, YAN YUTONG, YOU BO, DONG GUIFU
• Format: Patent
• Language: Chinese; English
• Published: 03.12.2019
• Subjects: BLASTING; HEATING; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MECHANICAL ENGINEERING; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOTOTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISEPROVIDED FOR; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PRODUCING MECHANICAL POWER; SPRING, WEIGHT, INERTIA OR LIKE MOTORS; WEAPONS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

The invention discloses a heat engine device for realizing the heat energy-mechanical energy conversion by using a shape memory alloy, and belongs to the field of power devices. The device comprises apiston type solid heat energy conversion device, and the piston type solid heat energy conversion device comprises a shell, an upper piston, a lower piston and an SMA spring. The bottom of the shellis sealed, and the top is open. A hot water inlet, a cold water inlet, a hot water outlet and a cold water outlet are formed on the side wall of the shell, the upper piston and the lower piston are both located in the shell, the SMA spring is located between the upper piston and the lower piston, and a connecting shaft is arranged at the top of the upper piston. According to the present invention,the hot water and the cold water are alternately introduced into the piston type solid heat energy conversion device, and the SMA spring is cooled to stretch and is heated to contract to push the piston in a reciprocating mann