Water tank of heat pump water heater

Abstract

The invention relates to a water tank of a heat pump water heater. The water tank comprises a water tank inner container and a heating coil pipe. The heating coil pipe is wound on the outer surface of the water tank inner container. The water tank is characterized in that: the water tank inner container and the heating coil pipe are made of metal materials; and an isolation dielectric layer is arranged between the water tank inner container and the heating coil pipe. The water tank inner container can be made of the metal materials comprising stainless steel, enamelled pressed steel and cold-roll steel. The heating coil pipe is a copper pipe, or an aluminum pipe, or a Bundy pipe. In the water tank, the isolation dielectric layer is added between the water tank inner container and the heating coil pipe so that physical contact between the water tank inner container and the heating coil pipe can be effectively prevented by the isolation layer and the isolation layer has good heat conductivity. Potential corrosion caused by potential difference between two metals is effectively prevented, meanwhile, the heat transfer effect of the water tank is ensured, and the performance of the complete machine of a heat pump is ensured. With the adoption of the water tank, the safe reliability of the heat pump water heat can be improved, and the water tank is convenient to be popularized.

Description

technical field [0001] The invention relates to a heat pump water heater, in particular to a water tank of a heat pump water heater capable of preventing potential corrosion between a water tank liner and a coil pipe, and belongs to the technical field of heat pump water heaters. Background technique [0002] At present, there are mainly two types of coils used in heat pump water heaters, one is built into the water tank, and the other is wound outside the water tank in a certain way, which is called an external coil water tank in the industry. The materials used in the inner tank of the outer coil water tank mainly include metal (stainless steel, enamel steel plate, cold-rolled steel plate, etc.) Any two different metals are in contact, due to the existence of potential difference, galvanic corrosion may occur. For the form of the outer coil of the metal water tank, whether the inner tank of the water tank corrodes first or the outer coil corrodes first, it will cause leak...

AI Technical Summary

Problems solved by technology

For the form of the outer coil of the metal water tank, no matter whether the inner tank of the water tank corrodes first or the outer coil corrodes first, it will cause leakage and cause damage to the heat pump water heater

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