Device for generating electricity and purifying automobile exhaust by utilizing waste heat of automobile exhaust

Abstract

The invention provides a device for generating electricity and purifying automobile exhaust by utilizing the waste heat of the automobile exhaust. The device comprises thermoelectric material, an exhaust pipe, a heat sink, a heat dissipation tube and a horn mouth, wherein the thermoelectric material is plated on the inner surface of the tail end part of the exhaust pipe; the heat sink is adhered on the outer surface of the tail end part of the exhaust pipe; the heat dissipation tube is installed outside the heat sink; the horn mouth is installed at the gas inlet end of the heat dissipation tube, which improves the rate of air flow in the heat sink so as to improve the temperature difference on two sides of the thermoelectric material, and further improve the heat to electricity conversion efficiency of the thermoelectric material. The device can not only utilize the waste heat of the automobile exhaust to generate electricity, but also convert gases, such as toxic carbureted hydrogen (CnHm), carbonic oxide (CO), nitrogen oxide (NOx) and the like, in the automobile exhaust, into non-toxic CO2, H2O and NOx gases so as to purify the automobile exhaust.

Description

technical field [0001] The invention relates to a method of generating electricity by using the waste heat of automobile exhaust and the poisonous hydrocarbon (C) in the automobile exhaust. n h m ), carbon monoxide (CO) and nitrogen oxides (NO x ) device for gas purification. Background technique [0002] At present, with people's emphasis on environmental protection and energy issues, thermoelectric materials have become a research hotspot. Thermoelectric material is an advanced energy conversion material, which can statically convert heat energy and electric energy through the movement of carriers. Generators, refrigerators, sensors and other components made of thermoelectric materials have the advantages of small size, light weight, simple structure, no medium leakage, no noise, no wear, easy movement, long service life, etc., and have been used in military and aerospace It is also widely used in high-tech fields such as automobile exhaust waste heat power generation,...

AI Technical Summary

Problems solved by technology

[0007] However, there are currently several problems related to the device for generating electricity and purifying automobile exhaust by using the waste heat of automobile exhaust: 1. The exhaust waste heat power generation device and the exhaust gas purification device are often separated or only have one of them; 2. The structure is more complicated , the difficulty of maintenance is high; 3. It has a certain impact on the performance of the engine; 4. The performance stability is not high

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