The invention discloses a heat
radiation device with a pulsating flow and a leaf
vein type micro channel. The heat
radiation device is used in cooperation with an electronic element, and comprises a heat radiator, a pulsating flow generation
system and a
solenoid valve controller. The heat radiator comprises a micro channel heat
radiation substrate or a micro channel heat radiation plate with the leaf
vein type micro channel, and a cover board. The pulsating flow generation
system comprises a motor, a
piston type
hydraulic cylinder, two liquid inlet solenoid valves and two liquid outlet solenoid valves, wherein a pair of liquid inlets and a pair of liquid outlets are formed in the front end and the rear end of a cylinder body of the
piston type
hydraulic cylinder respectively, the two liquid inlet solenoid valves are correspondingly connected with the two liquid inlets of the
hydraulic cylinder, and the two liquid outlet solenoid valves are correspondingly connected with the two liquid outlets of the hydraulic cylinder. The
solenoid valve controller comprises a
signal emitter and a
signal receiver. The forward travel and the back travel of the
piston type hydraulic cylinder can both provide a continuous pulsating
cooling medium flow for the heat radiator, the continuous and effective heat radiation time of a heat radiation cooling plate is prolonged, the mutual disturbance and mixing of a
cooling medium in the micro channel are obviously strengthened, and a heat boundary layer is damaged. Therefore, the heat radiation device with the pulsating flow and the leaf
vein type micro channel has the advantages of being good in heat
radiation effect, high in heat radiation efficiency, good in temperature uniformity in a heat radiation area, high in reliability and stability of work of elements and the like.