Water temperature control method, processor and air energy heat pump water heating system

Abstract

The invention provides a water temperature control method, a processor and an air energy heat pump water heating system, and belongs to the technical field of heat pump water heaters. The problem thatin the prior art, the energy-saving effect is poor is solved. The water temperature control method comprises the following steps of setting time and water temperature, setting current time of a system and a time value S of the highest environment temperature in a local day, correspondingly setting a time period of the highest environment temperature in the local day, namely from time S - a to time S + a, and setting a plurality of water temperatures according to different time periods; detecting data, namely detecting the current time and water temperature value; and implementing different water heating modes and the like according to whether the current time is within the local time period with the highest environment temperature in the local day or not. The water temperature control method, the processor and the air energy heat pump water heating system have the advantages that the characteristic that the environment temperatures are different in all time periods in one day is utilized, and the energy-saving operation effect of the air energy heat pump water heater is improved in the mode that multiple water temperatures can be set in different time periods for a client.

Description

technical field [0001] The invention belongs to the technical field of heat pump water heaters, and in particular relates to a method for controlling the temperature of water in a water tank in the system when an air energy heat pump hot water system is heating water. Background technique [0002] At present, the water temperature control of air source heat pump water heaters on the market is based on the difference between the user's set water temperature and the actual water temperature to determine the operation of the heat pump unit. ℃, the heat pump unit starts to make hot water. When the water temperature reaches the set temperature of 50 ℃, the heat pump unit stops heating water. This temperature control method has the following disadvantages: 1. The heat pump unit is turned on completely according to the actual water temperature and the set temperature. difference, it is impossible for the heat pump unit to run in the most energy-saving way, because the outdoor ambie...

AI Technical Summary

Problems solved by technology

[0002] At present, the water temperature control of air source heat pump water heaters on the market is based on the difference between the user's set water temperature and the actual water temperature to determine the operation of the heat pump unit. ℃, the heat pump unit starts to make hot water. When the water temperature reaches the set temperature of 50 ℃, the heat pump unit stops heating water. This temperature control method has the following disadvantages: 1. The heat pump unit is turned on completely according to the actual water temperature and the set temperature. difference, it is impossible for the heat pump unit to run in the most energy-saving way, because the outdoor ambient temperature is high in the afternoon of the day, and the operation is the most energy-saving at this time; way, there is a problem of energy waste, because the higher the water temperature of the heat pump water heater, the lower the energy efficiency of the unit; 3. There may be problems that the water temperature does not meet the requirements when the water is needed, and it takes a long time to wait. For example, a large amount of water is required for bathing at night, but After using water during the day, due to the addition of cold water, the water temperature is at the critical point when the heat pump unit is turned on. At this time, the water temperature is too low during the bathing process and the bathing has to be stopped; 4. The hot water temperature drops greatly during the heat pump unit’s heat preservation period. , causing energy waste, because the insulation of the water tank is proportional to the difference between the hot water temperature and the ambient temperature, the greater the difference, the greater the drop in water temperature