An outer disk micro-channel heat exchanger for the tank inner tank of a heat pump water heater

Abstract

An outer disk microchannel heat exchanger of the inner tank of a heat pump water heater, which is arranged on the outer wall of the inner tank of the water tank, and includes two collecting pipes and several flat pipes arranged between the collecting pipes. The cross section of the collecting pipes is Trapezoidal, the flat tube is plugged in the collecting pipe through the top surface of the collecting pipe, and one side of the collecting pipe is attached to the outer wall of the water tank liner. The outer disk microchannel heat exchanger is composed of collecting pipes, flat tubes, end covers, partitions, inlet and outlet pipes, mounting brackets, etc. The collecting pipes are equipped with partition grooves, flat tube grooves, mounting brackets, and inlet and outlet holes. Both ends of the collecting pipe are equipped with end caps, and the flow path is separated by a partition on the collecting pipe. After the flat pipe is inserted into the collecting pipe, it is welded, and then the inlet and outlet pipes are welded on the inlet and outlet holes. The structure of the present invention is slightly improved, the collecting pipe is in approximate surface contact with the inner tank of the water tank, and the length of the flat tube that is close to the collecting pipe and cannot touch the inner tank of the water tank is shorter, so that the space between the two is relatively small, and there is It is beneficial to improve the temperature conduction efficiency.

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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