Water tank used for heat pump hot water heater

Abstract

The invention relates to a water tank used for a heat pump hot water heater. The water tank comprises a hot water discharging liner and a cold water feeding liner, wherein the bottom of the hot water discharging liner is provided with a hot water outlet; the bottom of the cold water feeding liner is provided with a cold water inlet; the hot water discharging liner and the cold water feeding liner are connected by liner connecting pieces; a first heat exchange coil pipe is arranged in the hot water discharging liner; a second heat exchange coil pipe is arranged in the cold water feeding liner; a liner connecting water pipe is arranged between the hot water discharging liner and the cold water feeding liner; the head end of the liner connecting water pipe is positioned on the top of the cold water feeding liner; the tail end of the liner connecting water pipe is positioned on the bottom of the hot water discharging liner; the first end of the first heat exchange coil pipe and the first end of the second heat exchange coil pipe are communicated on the outsides of the liners; the second end of the first heat exchange coil pipe is provided with a Freon inlet; the second end of the second heat exchange coil pipe is provided with a Freon outlet. The hot water discharging rate of the water tank is high, and the problems of low hot water discharging rate and large size of the traditional water tank are solved.

Description

technical field [0001] The invention relates to the technical field of heat pump water heaters, in particular to a water tank for heat pump water heaters. Background technique [0002] Most of the water tanks of heat pump water heaters currently on the market are single inner tanks, the hot water output rate is generally about 75%, and the water in the water tank capacity cannot be fully utilized. Since the water tank is a pressure-bearing structure, which belongs to the top water type, during use, while hot water is flowing out of the water outlet, cold water is being fed into the water inlet at the same time, so that hot water and cold water form mixed water in the middle and lower parts of the inner tank of the water tank, and the water temperature drops rapidly. , resulting in a low rate of hot water output from the water tank outlet. When a family purchases a heat pump water heater, the configured water tank is generally too large, which causes inconvenience during the...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a water tank for a heat pump water heater. The water tank has two inner tanks, both of which are equipped with heat exchange coils. The latent heat is released in the cold water inlet tank. At the same time, the high temperature water on the top of the cold water inlet tank enters the bottom of the hot water outlet tank through the inner tank connection pipe. The two inner tanks are separated to ensure the hot water outlet tank. The outlet water is always high-temperature hot water, and the hot water outlet rate is increased to solve the problems of low hot water outlet efficiency and large volume of the existing water tank due to the use of a single liner

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