Heat exchanger, hot water circulation unit and control method thereof

Abstract

The present disclosure provides a heat exchanger, a hot water cycle unit and a control method thereof. The heat exchanger includes: a heat exchange tube and a heat exchange fin, and the heat exchange fin is arranged on the heat exchange tube, and The heat exchange fins are at least two, and at least two of the heat exchange fins form a heat exchange fin group; and in two adjacent heat exchange fin groups, the first heat exchange fin group The distance between the heat exchange fins close to the second heat exchange fin group and the heat exchange fins in the second heat exchange fin group close to the first heat exchange fin group gradually decreases along the direction of air flow, and the distance is the distance perpendicular to the direction of air flow. According to the present disclosure, the distance between the fins can be gradually reduced along the direction of the air flow, forming a large fin distance, increasing the wind speed and air volume, improving the heat exchange capacity of the heat exchange fins, and improving the defrosting ability, which can effectively meet the needs of multiple users. The large temperature operating range of the functional hot water machine improves the applicable range of working conditions.

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