Hot water heat converter and central air conditioner using the same

Abstract

The invention relates to a hot-water heat exchanger and a central air-conditioner using the hot-water heat exchanger. The hot-water heat exchanger consists of a shell, a refrigerant line provided in the shell, a cold water inlet pipe and a hot water outlet pipe; the shell is internally provided with a gas gathering drum with nozzle turning downwards and the refrigerant line surrounds out of the gas gathering drum. The central air-conditioner using the hot-water heat exchanger forms A machine circulating system and B machine circulating system by a compressor, a reversing valve, a surface air cooler, a heat exchanger and an electronic expansion valve. The A machine circulating system and B machine circulating system separately form loops through A and B refrigerant lines of a hot water electromagnetic valve and the hot-water heat exchanger. A plurality of fan-coil units and ground heating coils provided with electromagnetic valves are communicated with water pipes of the heat exchangerthrough circulating water pumps. The invention integrates ground heating, air-conditioning and producing hot water with high energy utilization rate and improves heat changing efficiency. Through twostage compression, the matching is ensured easy and the range of territory of use is wide. In addition, the inner liner of the hot-water heat exchanger is not easily broken when the water temperaturerises to ensure service life.

Description

technical field [0001] The invention relates to a hot water heat exchanger and a central air conditioner using the hot water heat exchanger. Background technique [0002] The hot water heat exchanger increases the temperature of the water by absorbing the heat released by the high-temperature and high-pressure refrigerant vapor discharged from the compressor for use by users. Chinese patent document 200520113856.6 discloses an "air-conditioning hot water exchanger", including a compressor, a condenser, an evaporator, a capillary tube, a dryer, a solenoid valve, a one-way check valve, a refrigerant pipe, and a four-way valve, heat exchanger Water exchanger, temperature sensor and storage tank. It consists of four parts: single cooling, cooling and heating, and separate heating. The hot water exchanger is composed of a heat exchange tube and a stainless steel water storage cylinder. The heat exchange tube is installed in the stainless steel water storage cylinder, the refri...

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Problems solved by technology

[0004] The invention mainly solves the technical problem that the inner tank of the original hot water heat exchanger is easy to crack when the water temperature rises; it provides a hot water heat exchanger that ensures that the inner tank is not easy to crack when the water temperature rises

[0006] The present invention also solves the technical problems that the traditional central air conditioner adopts a refrigerant circulation circuit, which causes complex structure, difficult matching, and restricted areas suitable for use; it provides a double refrigerant cycle through the use of a hot water heat exchanger with an improved structure circuit, to ensure easy matching, a wide range of areas of use, no need to store water tanks, and a central air conditioner using a hot water heat exchanger that can provide instant domestic hot water

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