Water heater return difference temperature adjusting method and water heater control method and system

Abstract

The invention discloses a water heater return difference temperature adjusting method and a water heater control method and system. The water heater return difference temperature adjusting method comprises the steps that a pipeline length parameter is obtained, a standard return difference temperature is obtained according to the pipeline length parameter; an environment temperature parameter is detected, a return difference temperature correction amount is obtained according to the environment temperature parameter; and a final value return difference temperature is calculated according to the standard return difference temperature and the return difference temperature correction amount. According to the technical scheme of the water heater return difference temperature adjusting method and the water heater control method and system, the final value return difference temperature used for judging whether the water heater needs to end the preheating process or not is set in a manner that modifiable type is carried out according to the environment temperature parameter and the pipeline length parameter, it can be guaranteed that the water heater meets the preheating requirement, andthe situation that the water heater cannot end the preheating process is avoided.

Description

technical field [0001] The present invention relates to the technical field of water heaters, and more specifically relates to a water heater hysteresis temperature adjustment method, a water heater control method and a control system using the hysteresis temperature adjustment method. Background technique [0002] When the zero-cooled water heater preheats the water in the pipeline, it judges whether it is necessary to end the preheating process based on the detected inlet water temperature. When the water heater detects that the inlet water temperature is lower than a certain value of the set temperature, It is considered that the preheating requirement is met, and the preheating process needs to be ended, and a certain value above is defined as the hysteresis temperature. At present, the hysteresis temperature of various zero-cooled water heaters on the market is set as a fixed value that cannot be modified. [0003] In practical application, the zero-cooling water heate...

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Problems solved by technology

[0003] In practical applications, the zero-cooling water heater needs to be matched with a certain length of pipeline. When the zero-cooling water heater is preheated, due to the heat loss when the water flows in the pipeline, the total amount of heat loss is related to the length of the pipeline and the ambient temperature. , so if the hysteresis temperature of the zero-cooled water heater cannot be adjusted, it is very likely that the preheating time will be too long, or even the preheating requirement will never be met.

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