Boiling water heater

A boiling water heater, includes a barrel shape internal tank body, a water inlet pipe, a water outlet pipe and a exhaust pipe, an upper end of the tank body fixedly and hermetically connect to a first upper cover, the first upper cover is fixedly and hermetically connected to a second upper cover;

• one cavity is formed between the first and second upper covers, the water inlet pipe passes through the second upper cover, the cavity and the first upper cover's one end that locate at a lower part of the internal tank body, and one end of the water outlet pipe is connected to an upper part of the internal tank body;
• electric heating pipes are installed in the tank body, the exhaust pipe through the second upper cover connects to the cavity, an exhaust hole is set on an inner wall of the water inlet pipe to connect to the cavity, a separation plate is extended to a middle which is above the exhaust hole on the water inlet pipe's internal wall, and a transition through-hole provided in the middle of the separation plate,
• wherein the cavity inside, a L-shaped pipe is fixedly connected to the water inlet pipe, a lower part of the L shape pipe's internal hole is connected to the exhaust hole, a gravity ball is installed on an upper part of the L shape pipe's internal hole.