A method for protecting a reverse osmosis filter element of a water purifier

Abstract

The invention provides a method for protecting a reverse osmosis filter element of a water purifier. The water purifier includes a booster pump and a reverse osmosis filter element. The booster pump is located upstream of the reverse osmosis filter element. The reverse osmosis filter element also includes a purified water outlet and a concentrated water outlet There is a flushing solenoid valve downstream of the water outlet and the concentrated water outlet. It is characterized in that, after the detected water temperature in the waterway is compared with the preset temperature and meets the preset conditions, the flushing solenoid valve is opened and the booster pump is turned on to reverse osmosis. The water in the filter element is replaced. Including coping with low temperature environment and high temperature environment, in low temperature environment, drain the water in the reverse osmosis filter element, replace the water in the reverse osmosis filter element with air, even if the water in the reverse osmosis filter element freezes, because there is a certain buffer inside space, to avoid breaking the shell of the filter element, or even destroying the reverse osmosis membrane. In a high-temperature environment, the water in the reverse osmosis filter element is drained, and the water in the reverse osmosis filter element is replaced with the normal temperature raw water in the water pipe to avoid damage to the reverse osmosis membrane by high-temperature water.

Description

technical field [0001] The invention relates to a method for protecting a reverse osmosis filter element of a water purifier, belonging to the field of water purification. Background technique [0002] Water is an important part of the human body. The water in the human body accounts for about 50% of an adult's body weight. The average daily water consumption of a normal person is 2000-2500 ml, and the oxidation of substances in the body can produce 300 ml of water, so it should be replenished every day About 2000 ml of water, most of which are obtained through drinking water. However, with the continuous aggravation of water pollution, it is becoming more and more difficult to drink healthy water, and other organs of the human body will also be damaged due to long-term pollution. The tap water for daily drinking has gone through a variety of cleaning, sterilization and disinfection methods, and the water quality test at the factory can meet the national hygiene standards, ...

AI Technical Summary

Problems solved by technology

However, the climate and environment in different places are very different, and the assembly and use environment of each household is also different, resulting in a more complicated working environment for the water purifier.

Especially in terms of water temperature environment, because the reverse osmosis filter element is extremely sensitive to water temperature, most of the traditional water purifiers are suitable for use in spring and autumn. Even if it is placed indoors, some long pipes are easy to freeze, causing blockage or cracking of the waterway. The important thing is that the volume of the water in the filter element expands after freezing at low temperature, and it is easy to break the shell of the filter element, which is harmful to the reverse osmosis filter element. Said hard ice is more likely to damage the reverse osmosis membrane

Even if it does not freeze, the water speed of the cold water passing through the multiple filter layers of the water purifier will slow down a lot, resulting in high power consumption and power consumption of the booster pump, and the water production efficiency will become low, and the waste of water will be obvious

In summer, users in some rural areas, and even some users in cities, will install the water purifier in a place where the sun can directly shine, such as a balcony, so that the water purifier will not work in the filter element or in the waterway. The water is heated. On the one hand, it is easy to breed bacteria in the machine. On the other hand, when the temperature exceeds a certain level, there is even a risk of damage to the reverse osmosis membrane, resulting in a decrease in water purification performance.

Images