Method for monitoring state of filter element of water purification device, monitoring device and water purification device

Abstract

The invention provides a method for monitoring the state of a filter element of a water purification device, a monitoring device and the water purification device. The monitoring device detects water flow velocity, water temperature value and water pressure value in real time and obtains standard water flow velocity through an operation relation. A control module of the monitoring device acquires an initial value of the standard water flow velocity; real-time values of multiple water flow parameters are detected in a filter element operating process, and a real-time value of the standard water flow velocity is acquired based on the detected real-time values of the multiple water flow parameters; a water production capacity attenuation index of the filter element is determined based on the initial value of the standard water flow velocity and the real-time values of the standard water flow velocity; the multiple water flow parameters comprise water flow velocity, water temperature, pressure of water flow at the water inlet end of the filter element, and pressure of the water flow at the water purification end. Because the state of the filter element is reflected in aspects of water production capacity and water purification capacity, and the influence of multiple environmental factors on the water flow velocity detection is comprehensively considered, and thus the actual state and the residual service life of the filter element can be accurately monitored.

Description

technical field [0001] The invention relates to the technical field of water purifiers, in particular to a monitoring device and a monitoring method capable of monitoring the state of a filter element, and a water purifying device using the monitoring device. Background technique [0002] With the rapid industrialization and urbanization of our country, the problem of water pollution has become very serious. According to the 2010 Environmental Bulletin of the Ministry of Environmental Protection, of the 395 centralized drinking water sources monitored in 113 key environmental protection cities across the country, 5.18 billion tons of water did not meet the standard, accounting for 23.5%. Therefore, more and more consumers choose water purifiers to ensure the health and safety of drinking water. [0003] The water purification of the water purifier is to filter out bacteria, microorganisms, organic matter and other harmful components through the tiny pores of the filter memb...

AI Technical Summary

Problems solved by technology

The timing method is only to roughly estimate the remaining life of the filter element, and does not reflect the actual state of the filter element

The flow accumulation method is more accurate than the timing method, but only considering the total flow without considering the influence of its flow rate and other environmental factors, and cannot accurately reflect the state of the filter element

The pressure difference method reflects the clogging of the filter element by detecting the pressure difference between the water inlet and the water outlet. However, this method relies heavily on the accuracy of the pressure sensor and is generally applicable to industrial membranes. big error

Chinese utility model patent specification CN201988264U discloses a filter element life detection device, which reflects the state of the filter element and calculates the filter element life by detecting flow and pressure, but does not consider the influence of flow rate, temperature and other parameters

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