Heat exchanger for micro-channel of outer disk in water tank liner of heat-pump water heater

Abstract

The invention relates to a heat exchanger for a micro-channel of an outer disk in a water tank liner of a heat-pump water heater. The heat exchanger for the micro-channel of the outer disk in the water tank liner of the heat-pump water heater is arranged in the outer wall of the water tank liner. The heat exchanger for the micro-channel of the outer disk in the water tank liner of the heat-pump water heater comprises two collecting pipes and a plurality of flat pipes arranged between the collecting pipes. The cross sections of the collecting pipes are in a trapezoid shape. The flat pipes are inserted in the collecting pipes through the top ends of the collecting pipes. One side faces of the collecting pipes cling to the outer wall of the water tank liner. The micro-channel of the outer disk is composed of the collecting pipes, the flat pipes, end covers, separating boards, inlet and outlet pipes, installing supports and the like. Separating plate grooves, flat pipe grooves, the installing supports and inlet and outlet holes are arranged on the collecting pipes. The end covers are installed on the two ends of the collecting pipes. A flow path is separated by the separating boards on the collecting pipes. The flat pipes welded after being inserted into the collecting pipes are welded, and the inlet and outlet pipes are welded in the inlet and outlet holes. According to the heat exchanger for the micro-channel of the outer disk in the inner liner of the water tank of the heat-pump water heater, the structure is improved slightly, the collecting pipes make contact with the approximate face of the inner liner of the water tank, and the lengths of the sections, close to the collecting pipes and cannot contact with the inner liner of the water tank, of the flat pipes are comparatively small, so that separated spaces between the flat pipes and the collecting pipes are comparatively small, and improving the conduction efficiency is facilitated.

Description

technical field [0001] The invention belongs to the technical field of microchannel heat exchangers, and in particular relates to an outer disk microchannel heat exchanger of an inner tank of a water tank of a heat pump water heater. Background technique [0002] In the prior art, the outer disc microchannel heat exchanger used in the water tank liner of the heat pump water heater is structurally two headers and the flat tube between the two headers is attached to the water tank liner, relying on the collector Flow tubes and flat tubes conduct heat, while the existing outer disk microchannel heat exchangers usually use circular headers, which are in line contact with the inner tank of the water tank, and there is a long section of flat tubes close to the header. The inner liner of the water tank is not reached, resulting in a large space for isolation between the two, and there are defects such as low temperature conduction efficiency, which affects the system efficiency of ...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the outer disc microchannel heat exchanger used in the water tank liner of the heat pump water heater is structurally two headers and the flat tube between the two headers is attached to the water tank liner, relying on the collector Flow tubes and flat tubes conduct heat, while the existing outer disk microchannel heat exchangers usually use circular headers, which are in line contact with the inner tank of the water tank, and there is a long section of flat tubes close to the header. It does not reach the inner liner of the water tank, resulting in a large space between the two, and there are defects such as low temperature conduction efficiency, which affects the system efficiency of the heat pump water heater

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