Heater applied to automobile fuel oil or fuel gas heating system

Abstract

The invention discloses a heater applied to an automobile fuel oil or fuel gas heating system and belongs to the field of heaters. The heater comprises a water jacket assembly, an air inlet assembly, a gas inlet assembly and a combusting assembly, wherein the gas inlet assembly is arranged at one end of the water jacket assembly, the combusting assembly is positioned in the water jacket assembly, and the gas inlet assembly is connected with the combusting assembly. The water jacket assembly comprises an outer layer water jacket and an inner layer water jacket coaxial with the outer layer water jacket, a first water flow channel in the outer layer water jacket is in parallel connection with a second water flow channel in the inner layer water jacket, a water jacket sealing cover is arranged at the opening position of the outer layer water jacket, and a gas channel is formed between the inner lateral water jacket and the lateral wall of the water jacket assembly. By means of the two layers of water jackets, the heat exchange area is enlarged, and the heat exchange efficiency is improved. Furthermore, a gas exhaust pipe of the heater is convenient to weld and install and low in manufacturing cost. In addition, the connection strength between an oil sprayer protection cover and an end cover is high.

Description

technical field [0001] The invention relates to the field of heaters, in particular to a heater used in an automobile fuel or gas heating system. Background technique [0002] The car heater is an important device for heating the train cab or the passenger compartment, and is widely used in the car heating system. Recently, the heaters in the fuel or gas heating systems of large and medium-sized passenger cars or buses mostly adopt a single-layer water jacket structure, and the heat exchange efficiency is low. The heat released during the combustion of external diesel and natural gas cannot be used by the components. Heat loss is severe. [0003] Such as Figure 4 As shown, a traditional automobile fuel oil or gas heating system heater adopts a single-layer water jacket structure, which includes a combustion chamber steel jacket 200, an injector shield 300 and a single water jacket located on the periphery of the combustion chamber steel jacket 200. One-layer water jacket ...

AI Technical Summary

Problems solved by technology

[0004] The structure and gas path of this automobile heater can be known: first, the inside of the combustion chamber steel sleeve 200 is a combustion chamber, so the heat energy of the combustion chamber steel sleeve 200 and its vicinity is relatively concentrated, but the above-mentioned structure combustion chamber steel sleeve 200 is not directly related to the single layer The water jacket 100 performs heat exchange, but the gas flow exchanges heat with the inner wall of the single-layer water jacket 100, the heat exchange efficiency is low, and the heat energy is difficult to be fully utilized

Secondly, the exhaust pipe 400 of the above-mentioned automobile heater is circular, and this shape increases the manufacturing cost of the exhaust pipe 400 and makes welding difficult

Finally, the fuel injector shield 300 of the above-mentioned automobile heater is tightly connected to the end cover 500 by extrusion, the connection strength is limited, and it is easy to shift, which even makes it difficult to use the fuel injector normally.

Images