Constant temperature replenishment control method and system for hot water machine

Abstract

The invention discloses a constant temperature water supply control method and system of a hot water machine. The constant temperature water supply control system of the hot water machine simultaneously controls the water level through the electrical connection of a heating device, a water supply device, a water level sensor, and a temperature sensor to a central controller. and temperature; and through the constant temperature replenishment control method of the hot water machine, the multiple water levels and temperature differences at the warning water level position, the first water level position and the second water level position are judged and controlled; the water level of the water tank is realized at the first The first water level position and the second water level position change within the range, and the water temperature of the hot water machine changes within the tolerance range of the supplementary water temperature, so as to ensure the constant water temperature of the hot water machine and effectively avoid the abnormality of the heating device caused by the lack of water in the water tank Protect against downtime or damage and give users a good water experience.

Description

technical field [0001] The invention relates to the field of water heaters, in particular to a method and system for controlling constant temperature replenishment of water heaters. Background technique [0002] At present, in various types of static heating water heaters such as electric heating, solar energy, and circulating heat pump water heaters, as the user uses hot water, the water level of the heat preservation water tank will gradually decrease. Therefore, In order to ensure that users have sufficient hot water supply, it is necessary to increase the water replenishment function of the hot water machine. However, during the water replenishment process, the temperature of the insulated water tank will change accordingly, so the temperature will not remain constant during the water replenishment process. For the above problems, in the Chinese patent CN202853120U, a device for water replenishment at constant temperature is proposed for the circulating heat pump unit, a...

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Problems solved by technology

[0002] At present, in various types of static heating water heaters such as electric heating, solar energy, and circulating heat pump water heaters, as the user uses hot water, the water level of the heat preservation water tank will gradually decrease. Therefore, In order to ensure that users have sufficient hot water supply, it is necessary to increase the water replenishment function of the hot water machine. However, during the water replenishment process, the temperature of the insulated water tank will change accordingly, so the temperature will not remain constant during the water replenishment process.

For the above problems, in the Chinese patent CN202853120U, a device for water replenishment at constant temperature is proposed for the circulating heat pump unit, and the water level and temperature are controlled simultaneously through the electrical connection between the water level detection device and the temperature controller and the water replenishment device. During the replenishment process, if the water flow rate of the user is greater than the replenishment water flow rate, the water temperature is lower than 48°C and the water level is lower than the maximum water level, the replenishment valve will be closed; Cause high pressure failure and shut down, affecting the normal use of heat pump water heater products

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