A thermionic device and its manufacturing method

Abstract

The invention relates to a novel thermionic device. The device comprises an emitting electrode plate, a receiving electrode plate and a control ring, wherein the emitting electrode plate is used for emitting thermal ions; the receiving electrode plate is used for capturing the thermal ions; the control ring is used for controlling a gap between the two electrode plates and is connected with the two electrode plates through heat-insulation insulating layers; the spacing gap between the two electrode plates is controlled within 0.1-100 nanometers by the aid of the thermal expansion property of the control ring; and a closed vacuum chamber is formed among the two electrode plates, the heat-insulation insulating layers and the control ring. With the adoption of the device, the efficiency of heat energy generation can be greatly improved; in addition, refrigeration can be conducted after the device is electrified, the size is greatly reduced, the refrigeration efficiency can reach or exceed the traditional vapor compression type refrigeration efficiency, so that energy consumption is reduced.

Description

technical field [0001] The invention relates to a thermionic device and a manufacturing method thereof in the application field of thermionic power generation and thermionic refrigeration. Background technique [0002] At present, most of the electric energy in the world is obtained by converting fossil energy and nuclear energy into thermal energy, converting thermal energy into mechanical energy through steam, or directly using the mechanical energy transmitted by the wind wheel or water wheel to push the generator to cut the magnetic force line. In the process of these conversions, there are conversion losses, low power generation efficiency and bulky volume. Solar photovoltaic system or thermosemiconductor power generation is connected by a material with poor thermal insulation and low thickness between the hot end and the cold end, and its heat conduction loss limits the electrical conversion efficiency of photovoltaics and thermosemiconductors. Thermionic power genera...

AI Technical Summary

Problems solved by technology

In the process of these conversions, there are conversion losses, low power generation efficiency and bulky

Solar photovoltaic system or thermosemiconductor power generation is connected by a material with poor thermal insulation and low thickness between the hot end and the cold end, and its heat conduction loss limits the electrical conversion efficiency of photovoltaics and thermosemiconductors

Thermionic power generation technology can directly convert heat into electrical energy, with high theoretical efficiency. It has no moving parts and has a long life. However, the distance between the emitter and receiver electrodes needs to be controlled within 10 nanometers to obtain a good Effect, the traditional processing technology can not meet the gap control requirements

Although U.S. Patent US7169006B2 provides a control method for the gap, its structure and manufacturing process have high product cost

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