Vehicle liquid gas fuel heater

The utility model provides a vehicle liquid gas fuel heater, which comprises a heat exchanger, a burner and a controller, wherein the burner is sleeved in the heat exchanger, the open end of the heat exchanger is connected with one end of a connector of the burner, and a ring-shaped cavity, a water inlet, a water outlet, a water temperature sensor, an overheat sensor and a vent are arranged on the wall of the heat exchanger. The burner comprises a combustion chamber, a gas fuel feeder, an air distributing device, an igniter and a connector, wherein the combustion chamber is sheathed in the heat exchanger, the air distributing device is installed on the other end of the connector, a gas fuel injector which penetrates into the burner is installed in the connector, the igniter is arranged on the gas fuel injector, and an ignition sensor is installed on the connector, and a circuiting water pump, all sensors, the air distributing device and the igniter are all connected with the controller. The vehicle liquid gas