Heat exchanger, heating water circulating unit and control method of heating water circulating unit

Abstract

The invention provides a heat exchanger, a heating water circulating unit and a control method of the heating water circulating unit. The heat exchanger comprises a heat exchange pipe and heat exchange fins, the heat exchange fins are arranged on the heat exchange pipe in a penetrating mode, the number of the heat exchange fins is at least two, and the at least two heat exchange fins form a heat exchange fin set; and in every two adjacent heat exchange fin sets, the distance between the heat exchange fin, close to the second heat exchange fin set, in the first heat exchange fin set and the heat exchange fin, close to the first heat exchange fin set, in the second heat exchange fin set is gradually decreased in an airflow flowing direction, and the distance is the distance perpendicular tothe airflow flowing direction. The distance between the fins can be gradually reduced in the airflow flowing direction, the large fin distance is formed, the air speed is increased, the air volume isincreased, the heat exchange capacity of the heat exchange fins is improved, the defrosting capacity is improved, the large-temperature operation range of a multifunctional water heater can be effectively met, and the working condition application range is widened.

Description

technical field [0001] The present disclosure relates to the technical field of air conditioning, and in particular to a heat exchanger, a hot water circulation unit and a control method thereof. Background technique [0002] The heating operating range of the multi-function water heater is generally 35~-35°C, but within the range of 35~-7°C, it will not enter the state of frequent defrosting and can run for a long time. However, there will be abnormal situations. For example, in the areas along the Yangtze River in China, the humidity is too high, and when the temperature is lower than 0°C, there will be a lot of frost. At this time, the defrosting load of the whole machine is very large, which will occupy a very large load output of the whole machine. And there will be problems such as unclean defrosting and frequent defrosting. [0003] From another point of view, when the external ambient temperature is -7~-35°C, there will be a lot of frost on the fins at this time, an...

AI Technical Summary

Problems solved by technology

[0007] Therefore, the technical problem to be solved in this disclosure is to overcome the high heat exchange performance fins of the heat exchangers in the prior art that are suitable for the normal temperature section, which cannot meet the requirements of the large temperature operating range of the multifunctional water heater and the small application range of the working conditions. defects, thereby providing a heat exchanger, a heating water circulation unit and a control method thereof

Images