Novel intelligent cold and hot water mixing constant temperature heat supply device

Abstract

The invention discloses a novel intelligent cold and hot water mixing constant temperature heat supply device, and relates to the technical field of electric boilers with heat storage. The device is characterized in that a water replenishing tank is connected with a cooling water tank through a water replenishing pipe; a fifth water pump is mounted on the water replenishing pipe; the bottom of the cooling water tank is connected with a heat storage device through a cooling water pipe; the bottom of the heat storage device is connected with the middle of each of a water mixing tank and the cooling water tank through a water return pipe; a third valve is mounted on the water return pipe connected with the middle of the cooling water tank; the water mixing tank is connected to the top of the heat storage device through a water supply pipe; a second valve is mounted on the water supply pipe; the bottom of the heat storage device is connected with a water discharge pipe through a water outlet pipe; a fifth valve is mounted on the water outlet pipe. According to the novel intelligent cold and hot water mixing constant temperature heat supply device, water does not flow through the heat storage body during the heat storage period, the conventional heat storage water tank is replaced by the cooling water tank, inherent disadvantages of the two methods of electric heat-storage heat supply are overcome, the efficiency of the electric boiler with heat storage is improved when compared with that in the prior art, and the floor space is reduced by 50%.

Description

technical field [0001] The invention relates to a novel intelligent hot and cold water mixed constant temperature heating device, which belongs to the technical field of electric heat storage boilers. Background technique [0002] The R&D and application of valley electric thermal storage boilers has become the focus and focus of research and development in the field of energy conservation and environmental protection in various countries. At present, there are two technical methods for the realization of valley electricity heat storage boiler technology: the first is to use cheap valley electricity at night to heat the heat storage body, store the heat in the heat storage body, and use a fan to blow the The heat in the boiler is blown to the air-water heat exchanger through the pipe, and the circulating water in the heating pipe is heated by the air-water heat exchanger to provide heating for the building; Flowing in the heat storage body, the temperature of the water rise...

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Problems solved by technology

However, in practice, these two methods have many limitations

[0003] For the first method: due to the low heat transfer efficiency of the air-water heat exchanger and the small specific heat of the air, the air-water heat exchanger is bulky, the diameter of the air pipe is large, and the floor space is large. The increase of the heating area will be more obvious, and even impossible to implement

Moreover, the manufacturing process of the air-water heat exchanger is complex, expensive, and difficult to hoist and install, which brings inconvenience to the popularization and application of electric heat storage boiler technology

[0004] For the second method: some improvements have been made in solving the various shortcomings of the above-mentioned first method. The air-water heat exchanger in the first method has been canceled, but a water storage tank has been added. Although the water storage The manufacturing process of the tank is simple, but the volume of the water storage tank is still huge and occupies a large area

In addition, due to the continuous absorption of heat from the heat storage body by the water flow during the night valley power heat storage period, it is difficult to increase the temperature of the heat storage body, which reduces the utilization rate of the heat storage body

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