System and method for detecting service life of water purifier filter element

Abstract

A system for detecting the service life of a water purifier filter element. The system comprises a low-pressure switch (1), a filter membrane device (2), a booster pump (3), a reverse osmosis (RO) membrane device (4), a flowmeter (5), a high-pressure switch (6) and a pressure tank (7), which are sequentially connected by means of pipes. The present invention further relates to a method for detecting the service life of a water purifier filter element. The maximum water production capacity of a filter element is obtained by means of high-frequency calculation of a water production flow rate of the filter element, and a daily maximum water production capacity is compared with a factory-set water production capacity to calculate the attenuation of the water production capacity, so as to obtain the service life of the filter element and realize more accurate filter element replacement.

Description

A system and method for testing the lifespan of water purifier filter cartridges Technical Field

[0001] This invention relates to the field of water purifier technology, specifically to a system and method for detecting the lifespan of a water purifier filter cartridge. Background Technology

[0002] The filter cartridge is the core component of a water purifier. The quality and lifespan of the filter cartridge directly determine the water purification effect and lifespan of the water purifier. Filter cartridges have a lifespan and need to be maintained and replaced.

[0003] Currently, the industry mainly uses two methods to estimate filter cartridge lifespan: time (usage time) and water flow rate. For the same filter cartridge, different water quality and frequency of use will lead to significant differences in filter cartridge lifespan. The above two methods do not take into account the differences in water quality and individual equipment usage, resulting in very rough filter cartridge calculations. Either the filter cartridge still has a long lifespan left, requiring premature replacement and wasting the filter cartridge's lifespan; or the filter cartridge is already clogged, affecting the user's normal water use.

[0004] Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a system and method for detecting the lifespan of water purifier filter cartridges, thus resolving the defects and deficiencies in the prior art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a system for detecting the lifespan of a water purifier filter cartridge, the system comprising a low-pressure switch, a filter membrane device, a booster pump, an RO reverse osmosis membrane device, a flow meter, a high-pressure switch, and a pressure tank, wherein the low-pressure switch, filter membrane device, booster pump, RO reverse osmosis membrane device, flow meter, high-pressure switch, and pressure tank are sequentially connected by pipelines.

[0009] Preferably, the low-pressure switch is used for water shortage protection of the whole machine. When the tap water pressure reaches the set value, the low-pressure switch closes, connects the water production circuit, and the water purifier works normally. When the water supply stops or the water pressure is lower than the set value, the low-pressure switch opens, cuts off the water production circuit, the water purifier stops working, and the booster pump stops running.

[0010] Preferably, the high-pressure switch is used to disconnect the water production circuit and stop the machine when the pressure tank is full or reaches the set pressure value, and to close the high-pressure switch and connect the circuit when the pressure tank pressure is less than the set value, so that the whole machine resumes water production and the pure water machine works normally.

[0011] Preferably, the booster pump is used to pressurize tap water to meet the pressure and flow requirements of the RO reverse osmosis membrane device.

[0012] A method for detecting the service life of a water purifier filter element, characterized in that: the detection method includes the following contents:

[0013] 1) Hardware modification

[0014] Add a flow meter at the water purification end;

[0015] 2) Parameter initialization

[0016] When testing a machine with a brand-new filter element in the factory and laboratory, test the filtration speed V0 of the filter element of the machine. V0 is used as the initial speed of the filter element, corresponding to 100% of the filter element life;

[0017] Initialize the maximum water production speed Vmax = 0 at 0:00 every day;

[0018] 3) The calculation method of the maximum water production speed of the filter element is as follows:

[0019] Driven by a timer:

[0020] A) The timer starts to judge whether water is being produced. If no water is being produced, go to end E;

[0021] B) Calculate the current water production speed Vt = water production flow L / detection period T;

[0022] C) If Vt > Vmax, then Vmax = Vt;

[0023] D) The water production volume L = 0; the time T = 0;

[0024] E) End;

[0025] 4) The calculation method of the filter element life is as follows:

[0026] Filter element life = Vmax / V0 * 100%;

[0027] Vmax: The maximum water production speed of the previous day;

[0028] When the filter element life < S (S = 50 - 60%), prompt the user to replace the filter element.

[0029] (III) Beneficial effects

[0030] The present invention provides a system and method for detecting the service life of a water purifier filter element. It has the following beneficial effects:

[0031] This invention employs high-frequency calculation of filter cartridge water production flow rate to obtain the filter cartridge's maximum water production capacity. By comparing the maximum daily water production capacity with the initial water production capacity at the time of manufacture, the attenuation of water production capacity can be accurately calculated, thus obtaining a precise filter cartridge lifespan. Using this precise filter cartridge lifespan, filter cartridge replacement can be performed more accurately for customers, avoiding wasting filter cartridge lifespan and preventing filter clogging from affecting customer use. This maximizes resource utilization, avoids waste, and does not affect normal user operation. Attached Figure Description

[0032] Figure 1 is a schematic diagram of the structure of the present invention;

[0033] Figure 2 is a dynamic diagram of the water production speed of the invention;

[0034] Figure 3 is a flowchart of the invention process. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example:

[0037] As shown in Figures 1-3, this embodiment of the invention provides a system for detecting the lifespan of a water purifier filter cartridge. The system includes a low-pressure switch 1, a filter membrane device 2, a booster pump 3, an RO reverse osmosis membrane device 4, a flow meter 5, a high-pressure switch 6, and a pressure tank 7. The low-pressure switch 1, the filter membrane device 2, the booster pump 3, the RO reverse osmosis membrane device 4, the flow meter 5, the high-pressure switch 6, and the pressure tank 7 are connected in sequence through pipes.

[0038] Low-pressure switch 1 is used for water shortage protection of the whole machine. When the tap water pressure reaches the set value, low-pressure switch 1 closes and connects the water production circuit, and the pure water machine works normally. When the water supply stops or the water pressure is lower than the set value, low-pressure switch 1 opens and cuts off the water production circuit, the pure water machine stops working, and the booster pump 3 stops running.

[0039] The high-pressure switch 6 is used to disconnect the water production circuit and stop the machine when the pressure tank 7 is full or reaches the set pressure value. When the pressure in the pressure tank 7 is less than the set value, the high-pressure switch 6 closes to connect the circuit and the whole machine resumes water production and the pure water machine works normally.

[0040] Booster pump 3 is used to pressurize tap water to meet the pressure and flow requirements of RO reverse osmosis membrane device 4.

[0041] A method for testing the lifespan of a water purifier filter cartridge, the method comprising the following:

[0042] 1) Hardware modifications

[0043] Adding a flow meter (2) to the water purification end causes the water purification machine to produce water at a rate that is affected by various factors such as the water pressure at the front end, the water intake speed at the back end, and whether the pressure tank 7 is full, resulting in significant fluctuations.

[0044] 2) Parameter initialization

[0045] When testing a machine with a brand new filter cartridge in the factory and laboratory, the filtration speed V0 of the filter cartridge is tested. V0 is the initial speed of the filter cartridge, corresponding to 100% of the filter cartridge's lifespan.

[0046] Initialize the maximum water production rate Vmax = 0 at 0:00 every day;

[0047] 3) The calculation method for the maximum water production rate of the filter element is as follows:

[0048] Driven by a timer:

[0049] A) The timer starts to determine if water is being produced; if not, it switches to end E.

[0050] B) Calculate the current water production rate Vt = water production flow rate L / detection cycle T;

[0051] C) If Vt > Vmax, then Vmax = Vt (for example, during the water production process, the water production rate Vt of the filter cartridge is calculated every 30 seconds to 1 minute; if Vt > the maximum water production rate Vmax of the day, then Vmax = Vt).

[0052] D) Water production L = 0; Time T = 0;

[0053] E) End;

[0054] This invention employs short-time, high-frequency calculation to determine the water production rate Vt of the water purifier within a short period. This allows for capturing the maximum water production efficiency of the filter cartridge as much as possible, reducing deviations in water production rate caused by factors such as inlet water pressure, pressure tank 7, and differences in user water dispensing speed.

[0055] Referring to Figure 2, this is a dynamic graph of the water production rate of a water purifier over a day. The water production rate of the water purifier fluctuates randomly from 3.8L / minute to 0.6L / minute.

[0056] 4) The method for calculating filter cartridge life is as follows:

[0057] Filter life = Vmax / V0 * 100%;

[0058] Vmax: Maximum water production rate on the previous day;

[0059] When the filter element life < S (S = 50 - 60%), prompt the user that the filter element needs to be replaced.

[0060] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for testing the lifespan of a water purifier filter cartridge, characterized in that: The detection method includes the following: 1) Hardware modification Add a flow meter at the water purification end; 2) Parameter initialization When testing a machine with a brand-new filter element in the factory and laboratory, test the filtration speed V0 of the filter element of the machine. V0 is used as the initial speed of the filter element, corresponding to 100% of the filter element life; Initialize the maximum water production speed Vmax = 0 at 0:00 every day; 3) The calculation method of the maximum water production speed of the filter element is as follows: Driven by a timer: A) The timer starts to judge whether water is being produced. If no water is being produced, go to the end E; B) Calculate the current water production speed Vt = water production flow L / detection period T; C) If Vt > Vmax, then Vmax = Vt; D) The water production volume L = 0; the time T = 0; E) End; 4) The calculation method of the filter element life is as follows: Filter element life = Vmax / V0 * 100%; Vmax: The maximum water production speed of the previous day; When the filter element life < S (S = 50 - 60%), prompt the user that the filter element needs to be replaced.

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