Heat pump water heating machine and water temperature control method and device for heat pump water heating machine

Abstract

The invention discloses a water temperature control method for a heat pump water heating machine. The water temperature control method comprises the following steps of obtaining default set water temperature of the heat pump water heating machine, determining working functions of the heat pump water heating machine and relevant parameters in the working functions of the heat pump water heating machine; calculating target water temperature through the working functions according to the default set water temperature and the relevant parameters; controlling the heat pump water heating machine and the target water temperature to perform work. By means of the water temperature control method, the target water temperature can be automatically adjusted to ensure water comfort degree of a user and operation energy-saving performance of the whole machine, convenience is brought to the user, and user experience is improved. The invention further discloses a water temperature control device for the heat pump water heating machine and the heat pump water heating machine.

Description

technical field [0001] The invention relates to the technical field of electrical appliances, in particular to a water temperature control method for a heat pump water heater, a water temperature control device for a heat pump water heater, and a heat pump water heater. Background technique [0002] With the development of heat pump water heaters, users have higher and higher diversified demands on heat pump water heaters. For example, in the related art, the water temperature setting scheme of the heat pump water heater is relatively simple, and the user can only manually set the water temperature within the preset range, and the default water temperature is set by default when the power is first turned on, and if the set water temperature is not adjusted afterwards , the heat pump water heater will always run at the default set water temperature. [0003] However, the disadvantage of the related technology is that it is necessary to manually adjust the set water temperatu...

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Problems solved by technology

[0003] However, the disadvantage of the related technology is that it is necessary to manually adjust the set water temperature in case of seasonal changes. If the manual adjustment is not performed, the heat pump water heater will always run at the default set water temperature. Reduced and excess hot water will cause energy waste, and at the same time, the compressor load will be too large, which will affect the reliability of the compressor; when the ambient temperature is low, the demand for hot water will increase, which may cause insufficient hot water and poor comfort

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