Heat exchanger

Abstract

The purpose of the present invention is to provide a heat exchanger capable of suppressing boiling and lime precipitation due to local overheating of a heating medium and at the same time improving heat transmittance efficiency. The heat exchanger of the present invention for achieving said purpose comprises: heating medium flow paths, through which a heating medium flows, inside a plurality of laminated plates; and a heat exchange unit in which combustion gas flow paths, through which a combustion gas flows, are alternately formed to be adjacent to each other, wherein the heat exchange unitshave a heating medium differential distribution unit which enables the flow rate of the heating medium to be differentially distributed to parallel heating medium flow paths of the heat exchange unitsuch that the flow rate of the heating medium passing through the parallel heating medium flow paths is balanced with the quantity of absorbed heat transmitted to the plates.

Description

technical field [0001] The present invention relates to a heat exchanger, in particular to a method for distributing the flow difference of the heat medium so as to balance the flow and heat absorption of the heat medium passing through the heat medium flow path formed as a multi-layer between a plurality of plates , so as to suppress the boiling of the heat medium and the precipitation of lime, and at the same time, it can improve the heat transfer efficiency of the heat exchanger. Background technique [0002] A boiler for heating or hot water is a device that uses a heat source to heat heating water or direct supply water (hereinafter, collectively referred to as "heat medium") to heat or supply hot water to a desired area. A burner for burning a mixture of gas and air, and a heat exchanger for transferring the combustion heat of the combustion gas to a heat medium. [0003] As an example of the prior art related to heat exchangers, Korean Patent No. 10-0813807 discloses...

AI Technical Summary

Problems solved by technology

Therefore, in the heat medium flow path 11 formed by the outer peripheral plate 10a, a large flow rate of heat medium is supplied even though the amount of heat absorbed is small. The heat medium flow channels 12, 13, 14, although the heat of the combustion gas is transferred through the two plates 10c, 10d and absorbs a lot of heat, they still provide a small flow of heat medium, so that there is a gap between the heat medium flow and the absorption flow. imbalance

[0010] In this way, in the case where the flow path of the heat medium in the heat medium flow path of each layer and the absorbed heat transferred to the heat medium through the plate cannot be balanced, there is a problem that the heat exchange performance between the heat medium and the combustion gas Reduced, and in the area where the flow rate of the heat medium is small, due to local overheating, noise is generated by the boiling of the heat medium and foreign matter such as lime (Lime) is precipitated

Images