Heat-exchanging coil pipe and water storage type heat pump water heater using same

Abstract

The invention relates to a heat-exchanging coil pipe and a water storage type heat pump water heater using the same, wherein the heat-exchanging coil pipe comprises an inner pipe containing heat pump cycle fluid and an outer pipe sleeved on the inner pipe, the outer wall of the inner pipe and the inner wall of the outer pipe are closely jointed, at least one channel which connects ports at two ends of the outer pipe is embraced between the outer wall of the inner pipe and the inner wall of the outer pipe, a channel outlet is embraced between at least one end of the ports at two ends of the outer pipe and the outer wall of the inner pipe, and the port comprising the channel outlet is positioned at one side outside a water tank at the joint part between the heat-exchanging coil pipe while being mounted and the hot water tank; and the water storage type heat pump water heater uses the heat-exchanging coil pipe and is provided with a positive electrode and a negative electrode at a water outlet contact position of the channel outlet of the inner pipe and the outer pipe of the coil pipe. The invention can give an alarm immediately when the outer pipe of the heat-exchanging coil pipe is corroded and penetrated, reliably prevent the cycle fluid in the water heater from leaking into the water tank of the water heater as the heat-exchanging coil pipe is corroded and penetrated, avoid water pollution of the water tank, and has timely, simple and reliable alarming mode.

Description

technical field [0001] The invention relates to a part of a heat pump water heater, and also relates to a water heater using the part, in particular to a heat exchange coil and a water storage heat pump water heater using the heat exchange coil. Background technique [0002] The heat pump is an important high-temperature heat source. By consuming a certain amount of energy (such as electric energy, etc.), the compressor is used to drive the refrigerant circulating in the heat exchange system, and the refrigerant is transferred from low-temperature heat sources (such as groundwater, river seawater, sewage, natural air, etc.) It absorbs heat energy, converts it into higher temperature heat energy, and outputs it to the water or ambient air required by people to meet people's needs for heat energy. Such as water storage heat pump water heater is a commonly used heat pump water heater. [0003] Such as figure 1 As shown, in a common water storage type heat pump water heater, t...

AI Technical Summary

Problems solved by technology

Because the water usually used in the water tank contains corrosive substances, these corrosive substances will cause corrosion to the condenser coil 5 during long-term use, and when the corrosion reaches a certain level, the condenser coil 5 of this single-layer structure will be perforated

Since the condenser coil 5 works under high temperature and high pressure, once the condenser coil 5 is corroded and perforated, the high-pressure circulating working fluid in the coil will leak into the water of the water heater tank 7 along the corroded perforation, causing pollution

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