A strip regenerator applied to Stirling heat engine heat exchange and its manufacturing method

Abstract

The invention discloses a strip-shaped heat regenerator applied to the heat exchange of a Stirling heat engine and a manufacturing method thereof. The strip-shaped heat regenerator is made through winding by a strip-shaped object; a winding center is provided with a longitudinal through hole; the strip-shaped heat regenerator comprises an inner layer, an outer layer and an intermediate layer, wherein the inner layer and the outer layer serve as inner and outer skeletons, the intermediate layer is located between the inner layer and the outer layer; the inner layer and the outer layer are formed through winding for at least one circle of the strip-shaped object respectively, and are bonded into fixed ring structures respectively; the adjacent every two circles of the strip-shaped object are bonded with each other and cannot be moved mutually; the intermediate layer is formed through winding for multiple circles of the strip-shaped object; further, a gap between adjacent every two circles of the strip-shaped object can be adjusted to be of a structure which is uniform in distribution through shake or vibration. According to the technical scheme of the strip-shaped heat regenerator applied to the heat exchange of the Stirling heat engine, the inner layer and the outer layer are fixedly arranged and bonded to form the inner skeleton and the outer skeleton respectively; the gaps between every two circles of the intermediate layer can be adjusted to be in a uniform state; the strip-shaped heat regenerator applied to the heat exchange of the Stirling heat engine has uniform and further excellent air permeability, and further, is simple and convenient to manufacture; a required inside diameter can be accurately determined; the intermediate layer is formed by tightly winding; meanwhile, the inner layer and the outer layer are convenient to bond; a structure that the gaps of the intermediate layer are adjustable is formed.

Description

technical field [0001] The invention relates to the technical field of heat-exchanging regenerators for Stirling heat engines, in particular to a band-shaped regenerator applied to heat-exchanging Stirling heat engines and a manufacturing method thereof. Background technique [0002] A regenerator is generally installed in the Stirling heat engine cycle device to moderate the cold and heat exchange at both ends and improve the working efficiency of the heat engine. Regenerators under the current technology are generally made as a whole or made of ribbon winding. For the regenerator made by winding, it is inevitable that there will be a small gap between every two turns of the ribbon during the winding process, and it is generally tight inside and loose outside. The closer to the winding center, the smaller the gap, and the farther away from the winding center, the smaller the gap. The larger the gap, the porosity of the gap will greatly affect the air permeability of the up...

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Problems solved by technology

However, these media also have a certain thickness. After fixing the strip-shaped winding structure of the regenerator, the porosity between the circles is increased, which further affects the air permeability of the regenerator, making the heat of the upper and lower end surfaces will freely enter the other end face through the gap

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