Heat pump water heater and water amount monitoring device of heat pump water heater

Abstract

The invention discloses a heat pump water heater and a water amount monitoring device of the heat pump water heater. The device comprises a both-piezoelectric ceramic transducer, a signal processing chip and a master control chip. A first piezoelectric ceramic and a second piezoelectric ceramic included in the both-piezoelectric ceramic transducer are arranged on the two sides of a water outlet / inlet pipe respectively. The signal processing chip sends a triggering signal to one of the first piezoelectric ceramic and the second piezoelectric ceramic to trigger one piezoelectric ceramic to be started, and receives a feedback signal sent by the other piezoelectric ceramic, and a first time difference between the feedback signal and the triggering signal is obtained; a triggering signal is sent to the other piezoelectric ceramic to trigger the other piezoelectric ceramic to be started, a feedback signal sent by one piezoelectric ceramic is received, a second time difference between the feedback signal and the triggering signal is obtained, and the water flow in the water outlet / inlet pipe is calculated according to the first time difference and the second time difference. The master control chip calculates the water usage amount within a first preset time according to the water flow within the first preset time, and therefore the measuring accuracy can be improved, installing is convenient, and the assembling of the whole machine is not affected.

Description

technical field [0001] The invention relates to the technical field of electrical appliances, in particular to a water quantity monitoring device for a heat pump water heater and a heat pump water heater. Background technique [0002] At present, there are relatively few heat pump water heaters with water volume statistics and billing functions, especially for household heat pump water heaters. With the improvement of people's living standards and the emphasis on energy-saving and environmental protection equipment, more and more attention has been paid to the specific use of hydropower. [0003] In related technologies, the water consumption of the heat pump water heater is generally measured by adding a water meter to the pipeline. However, its disadvantages are that it increases the difficulty and cost of equipment installation, and at the same time, because the water meter is a waterway component, its failure rate is relatively high, and the measurement accuracy of wate...

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Problems solved by technology

However, its disadvantages are that it increases the difficulty and cost of equipment installation. At the same time, because the water meter is a waterway component, its failure rate is relatively high, and the measurement accuracy of water consumption is low.

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