Circulating heat exchange device and method for improving heat exchange efficiency

Abstract

The invention provides a circulating heat exchange device and method for improving heat exchange efficiency, and relates to the field of hot air equipment. The circulating heat exchange device comprises a stove body, a heat conduction pipe and a circulating pipe; the heat conduction pipe and the circulating pipe are arranged in a furnace of the stove body, the circulating pipe comprises a venturipipe and a return pipe arranged outside the venturi pipe in a sleeving mode, and one end of the return pipe is connected with the stove body to form an air outlet; the other end of the return pipe isconnected with the heat conduction pipe, a circulation channel is formed between the outer wall of the venturi pipe and the interior of the return pipe, one end of the circulation channel and one endof the heat conduction pipe jointly communicate with an inlet of the venturi pipe, and the air outlet and the other end of the circulation channel jointly communicate with an outlet of the venturi pipe, the furnace communicating with the outside is arranged to heat the heat conduction pipe and the circulating pipe together, indoor oxygen is not consumed while hot air is output, heat exchange is conducted without air exchange, a circulation heating channel is formed inside the circulating pipe, airflow output by the backflow part is subjected to secondary heating, sufficient mixing is conductedin cooperation with the venturi pipe structure, the heat exchange efficiency is improved, and the requirement for rapid starting is met.

Description

technical field [0001] The present disclosure relates to the field of hot air equipment, in particular to a circulating heat exchange device and method for improving heat exchange efficiency. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] Biomass hot blast stove refers to the combustion of biomass materials as fuel, so that the energy is supplied to the corresponding equipment in the form of hot air. It is mainly aimed at residents and public buildings that cannot be centrally heated, and provides users with a small, safe, automatic and clean heating method. [0004] Along with the application of biomass, biomass combustion equipment has also been developed rapidly, but most of the equipment now has the problems of low heat exchange efficiency and large energy consumption. [0005] The inventors found that most of the current heating ...

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Problems solved by technology

[0006] The purpose of this disclosure is to provide a circulating heat exchange device and method for improving heat exchange efficiency in view of the defects existing in the prior art. A furnace connected to the outdoor is provided to heat the heat conduction tube and the circulation tube together to form a heat transfer and heat exchange structure, thereby It forms a hot air heating furnace, which does not consume indoor oxygen while outputting hot air, and does not exchange heat for heat exchange. A circulation heating channel is formed inside the circulation pipe, and the airflow output by the return part is reheated, and it is fully mixed with the Venturi tube structure. , improve the efficiency of heat exchange and meet the needs of quick start

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