Working machine and thermoelectric generator thereof

Abstract

The invention discloses a working machine and a thermoelectric generator thereof. The thermoelectric generator comprises an annular heat dissipation shell; at least one set of thermoelectric power generation elements which are located at the inner side of the heat dissipation shell; an insulating plate which is used for the insulative connection between the thermoelectric power generation elements and the heat dissipation shell and between the thermoelectric power generation elements and a heat source. Each thermoelectric power generation element comprises a plurality of N-type semiconductor particles, P-type semiconductor particles and elastic metal flow deflectors used for connecting the N-type semiconductor particles and the P-type semiconductor particles, and the metal flow deflectors can be bent along the circumferential direction of the heat dissipation shell. According to the thermoelectric generator, through the arrangement of the N-type semiconductor particles and the P-type semiconductor particles, the connection of the elastic metal flow deflectors and the bending deformation of the elastic metal flow deflectors, each thermocouple arm can reliably make contact with the heat source and a cold source, and the output power can be improved; meanwhile, through arrangement of the annular heat dissipation shell, the heat dissipation effect is improved.

Description

technical field [0001] The invention relates to the technical field of thermoelectric power generation, in particular to a thermoelectric generator. In addition, the present invention also relates to a working machine comprising the above-mentioned thermoelectric generator. Background technique [0002] Thermoelectric power generation technology is a potential thermal energy utilization technology, which is suitable for a wide range of thermoelectric conversion applications. [0003] At present, thermoelectric generators generally have a planar structure, which uses temperature differences to achieve power generation. However, the existing planar sheet-shaped thermoelectric power generation elements require planar contact between the power generation element and the circulation pipe. The thermoelectric generator designed under this condition , often changes the flow characteristics of the thermal fluid, which not only affects the exhaust characteristics of the engine but al...

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Problems solved by technology

[0003] At present, thermoelectric generators generally have a planar structure, which uses temperature differences to achieve power generation. However, the existing planar sheet-shaped thermoelectric power generation elements require planar contact between the power generation element and the circulation pipe. The thermoelectric generator designed under this condition , often changes the flow characteristics of the thermal fluid, which affects both the exhaust characteristics of the engine and the heat conduction characteristics of the device

[0004] In the prior art, there is also a circular thermoelectric generator that utilizes the heat of the exhaust pipe of the engine. By being sleeved on the exhaust pipe of the engine, the temperature of the exhaust gas is used to achieve the purpose of generating electricity; however, the circular thermoelectric generator in the prior art , is generally an integral structure, inconvenient to disassemble and assemble, poor versatility, and poor heat dissipation effect, low efficiency, resulting in serious heat loss in the exhaust pipe

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