| 摘要 |
A PTC heater having a heat conductor, a first end cover, a second end cover, and a PTC heating element. The heat conductor includes a duct for accommodating a PTC heating element, a first liquid passage channel, and a second liquid passage channel. The first end cover is coupled to one end of the heat conductor and includes a first and a second compartment, a water inlet, and a water outlet. The water inlet is in fluid communication with the first compartment and the first liquid passage channel, and the water outlet is in fluid communication with the second compartment and the second liquid passage channel. The second end cover is coupled to the other end of the heat conductor. The first and second liquid passage channels are in fluid communication with each other via an internal space of the second end cover to form a closed liquid circulation channel. |
