A method for measuring cumulative water flow and purified water flow of a water purifier

Abstract

The present invention discloses a method for measuring the cumulative water flow and the purified water flow of a water purifier, comprising the following steps: calibrating a flow meter and a cumulative water meter, and calculating the offset value and offset coefficient of each of the flow meter and the cumulative water meter; connecting two sets of calibrated flow meters and cumulative water meters in series to the water inlet and outlet pipes of the water purifier, supplying water to the water inlet pipe through a water supply system to start the water purifier; after the water supply reaches a set time, obtaining the values ​​of the cumulative water meter and flow meter in the water inlet and outlet pipes, and calculating the cumulative water flow and purified water flow of the water purifier based on the obtained values ​​and their corresponding offset value and offset coefficient. The present invention can simplify the measurement method and improve the accuracy of the measurement results.

Description

Technical Field

[0001] The present invention relates to the technical field of detection of household water purifiers, in particular to a method for measuring the accumulated water flow and the purified water flow of a water purifier. Background Art

[0002] After being manufactured, household water purifiers need to undergo various tests. Among them, the cumulative water flow and clean water flow of the water purifier are more important indicators for evaluating the energy efficiency level of the water purifier. Therefore, the cumulative water flow and clean water flow of the water purifier also need to be measured. The existing method for measuring the cumulative water flow and clean water flow of water purifiers is generally barrel weighing, that is, using an empty barrel to load the water purified by the water purifier and then weighing it. However, the total water purification volume of water purifiers is generally 2000L-3000L, and the volume of the empty barrel is limited. This requires the use of multiple empty barrels and multiple weighings. In addition, some water purifiers have 2-3 water outlets, which requires the use of multiple buckets at the same time. Two buckets are also required when calculating the water efficiency level, one for collecting pure water and the other for collecting wastewater, which makes the testing process very troublesome. Summary of the Invention

[0003] The present invention provides a method for measuring the cumulative water flow and the purified water flow of a water purifier, which can simplify the measurement method and improve the accuracy of the measurement result.

[0004] In order to solve the above problems, the present invention adopts the following technical solutions:

[0005] An embodiment of the present invention provides a method for measuring the cumulative water flow and the purified water flow of a water purifier, comprising the following steps:

[0006] Calibrate the flow meter and the accumulating water meter, and calculate the offset value and offset coefficient of the flow meter and the accumulating water meter respectively;

[0007] Connect two sets of calibrated flow meters and cumulative water meters in series to the water inlet and outlet pipes of the water purifier respectively, and supply water to the water inlet pipe through the water supply system to start the water purifier working;

[0008] After the water supply reaches the set time, the values ​​of the cumulative water meter and flow meter in the water inlet and outlet pipes are obtained, and the cumulative water flow and purified water flow of the water purifier are calculated based on the obtained values ​​and their corresponding offset values ​​and offset coefficients.

[0009] In some embodiments, the flow meter is calibrated and the steps of calculating the offset value and offset coefficient of the flow meter specifically include: connecting the flow meter and the flow limiting device in series in the calibration pipeline, and using a calibration bucket to receive the water flowing out of the calibration pipeline; adjusting the water flow of the calibration pipeline to different flow segments through the flow limiting device, and for each flow segment, the time for the calibration pipeline to pass water is T1, and after the water passing time is over, weighing the water capacity S1 in the calibration bucket, and calculating the calibration water flow M1=S1 / T1 in each flow segment based on the time T1 for the calibration pipeline to pass water and the water capacity S1 in the calibration bucket in each flow segment, and then fitting a calibration function based on the calibration water flow M1 in each flow segment and the average value of the corresponding flow meter, and calculating the offset value and offset coefficient of the flow meter in each flow segment.

[0010] In some embodiments, the steps of calibrating the flow meter and calculating the offset value and offset coefficient of the flow meter specifically include: connecting the flow meter, the standard flow meter and the flow limiting device in series in the calibration pipeline; adjusting the water flow in the calibration pipeline to different flow segments through the flow limiting device, and for each flow segment, reading the water flow values ​​measured by the standard flow meter and the flow meter, and then fitting a calibration function according to the water flow values ​​measured by the standard flow meter and the flow meter in each flow segment, and calculating the offset value and offset coefficient of the flow meter in each flow segment.

[0011] In some embodiments, the cumulative water meter is calibrated and the steps of calculating the offset value and offset coefficient of the cumulative water meter specifically include: connecting the cumulative water meter in series in a calibration pipeline, one end of the calibration pipeline is connected to the water supply bucket, and the other end is connected to the calibration bucket; adjusting the total water supply of the water supply bucket to different total water volume segments, for each total water volume segment, after the water in the water supply bucket flows out, weighing the water capacity S2 in the calibration bucket, fitting a calibration function based on the water capacity S2 in the calibration bucket under each total water volume segment and the cumulative water volume measured by the cumulative water meter, and calculating the offset value and offset coefficient of the cumulative water meter for each total water volume segment.

[0012] In some embodiments, the steps of calibrating the cumulative water meter and calculating the offset value and offset coefficient of the cumulative water meter specifically include: connecting the cumulative water meter and the standard integrator in series in a calibration pipeline, and connecting one end of the calibration pipeline to the water supply barrel; adjusting the total water supply of the water supply barrel to different total water volume segments, and for each total water volume segment, reading the cumulative water volume measured by the standard integrator and the cumulative water meter, and then fitting a calibration function according to the cumulative water volume measured by the standard integrator and the cumulative water meter under each total water volume segment, and calculating the offset value and offset coefficient of the cumulative water meter under each total water volume segment.

[0013] In some embodiments, the step of calculating the cumulative water flow of the water purifier based on the obtained numerical value and its corresponding offset value and offset coefficient specifically includes: multiplying the numerical value of the cumulative water meter in the water inlet pipe by the offset coefficient of the cumulative water meter, and then adding the product value of the two to the offset value of the cumulative water meter to obtain the cumulative water flow of the water purifier.

[0014] In some embodiments, the step of calculating the purified water flow of the water purifier based on the obtained numerical value and its corresponding offset value and offset coefficient specifically includes: multiplying the average value of the flow meter in the outlet pipe by the offset coefficient of the flow meter, and then adding the product of the two to the offset value of the flow meter to obtain the purified water flow of the water purifier.

[0015] The present invention has at least the following beneficial effects: the present invention connects the flow meter and the cumulative water meter in series in the water inlet pipe and the water outlet pipe of the water purifier. After the water supply system supplies water to the water inlet pipe, the water purifier starts to work. Therefore, the cumulative water flow and the clean water flow of the water purifier can be calculated according to the numerical values ​​of the cumulative water meter and the flow meter in the water inlet pipe and the water outlet pipe as well as the corresponding offset value and the offset coefficient. Compared with the traditional barrel weighing method, the measurement method can be greatly simplified, and the cumulative water flow and the clean water flow of the water purifier can be conveniently measured; at the same time, since the flow meter and the cumulative water meter are calibrated, the present invention does not directly calculate the cumulative water flow and the clean water flow of the water purifier based on the numerical values ​​of the cumulative water meter and the flow meter, but takes into account the offset value and the offset coefficient, which improves the accuracy of the measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a flow chart of a method for measuring the cumulative water flow and the purified water flow of a water purifier according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the pipeline connections of a method for measuring the cumulative water flow and purified water flow of a water purifier according to an embodiment of the present invention.

[0018] The reference numerals in the drawings are: water supply system 100 , water inlet pipe 110 , water outlet pipe 120 , cumulative water meter 210 , flow meter 220 , water purifier 300 . DETAILED DESCRIPTION

[0019] The present disclosure provides the following description with reference to the accompanying drawings to facilitate a comprehensive understanding of the various embodiments of the present disclosure as defined in the claims and their equivalents. The description includes various specific details to assist understanding, but these details should be considered as merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and structures may be omitted for clarity and conciseness.

[0020] The terms and words used in the following description and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Therefore, it should be clear to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration only and is not intended to limit the present disclosure as defined by the appended claims and their equivalents.

[0021] The terms "having", "may have", "include", or "may include" used in various embodiments of the present disclosure indicate the presence of the corresponding functions, operations, elements, etc. disclosed, but do not limit the additional one or more functions, operations, elements, etc. In addition, it should be understood that the terms "including" or "having" used in various embodiments of the present disclosure are intended to indicate the presence of the features, numbers, operations, elements, components, or combinations thereof described in the specification, but do not exclude the presence or addition of one or more other features, numbers, operations, elements, components, or combinations thereof.

[0022] It will be understood that when an element (for example, a first element) is “connected” to another element (for example, a second element), the element can be directly connected to the other element or an intervening element (for example, a third element) may be present between the element and the other element.

[0023] The embodiment of the present invention provides a method for measuring the cumulative water flow and the purified water flow of a water purifier, such as Figure 1 As shown, the following steps are included:

[0024] S100: Calibrate the flow meter and the accumulating water meter, and calculate the offset value and offset coefficient of the flow meter and the accumulating water meter respectively.

[0025] Flow meters and cumulative water meters are subject to certain measurement errors. Directly using their readings to calculate the cumulative water flow and purified water flow of a water purifier will result in inaccurate measurement results. Therefore, the present invention first calibrates the flow meter and cumulative water meter to be used, and then calculates the offset value and offset coefficient of each flow meter and cumulative water meter for subsequent calculation of the cumulative water flow and purified water flow of the water purifier.

[0026] S200: Two sets of calibrated flow meters and cumulative water meters are connected in series to the water inlet pipe and the water outlet pipe of the water purifier respectively, and water is supplied to the water inlet pipe through the water supply system to start the water purifier to work.

[0027] like Figure 2As shown, two sets of cumulative water meters 210 and flow meters 220 are used, and the two sets of cumulative water meters 210 and flow meters 220 are respectively connected in series to the water inlet pipe 110 and the water outlet pipe 120 of the water purifier 300. One end of the water inlet pipe 110 is connected to the water supply system 100, and the other end is connected to the water inlet of the water purifier 300. The water outlet pipe 120 is connected to the water outlet of the water purifier 300. When the water supply system 100 supplies water to the water inlet pipe 110, the water in the water inlet pipe 110 flows to the water purifier 300, so that the water is purified by the water purifier 300. The cumulative water meter 210 and the flow meter 220 naturally operate synchronously and measure corresponding values.

[0028] S300: After the water supply reaches the set time, the values ​​of the cumulative water meter and flow meter in the water inlet pipe and the water outlet pipe are obtained, and the cumulative water flow and the purified water flow of the water purifier are calculated based on the obtained values ​​and their corresponding offset values ​​and offset coefficients.

[0029] After the set measurement time is reached, the water supply system 100 stops supplying water. The values ​​of the cumulative water meter 210 and the flow meter 220 in the water inlet pipe 110 and the water outlet pipe 120 are obtained. The cumulative water meter 210 is a cumulative reading, so the value obtained is the value when the cumulative water meter 210 stops rotating, and the flow meter 220 is an instantaneous count. Therefore, the value of the flow meter 220 obtained is the average value of the flow meter 220 during the entire measurement time period. The cumulative water flow and the clean water flow of the water purifier can be calculated using the above values ​​and the corresponding offset value and offset coefficient. Compared with the traditional barrel weighing method, this method of this embodiment can greatly simplify the measurement method and facilitate the measurement of the cumulative water flow and the clean water flow of the water purifier. At the same time, since the flow meter and the cumulative water meter are calibrated, this embodiment does not directly calculate the cumulative water flow and the clean water flow of the water purifier based on the values ​​of the cumulative water meter and the flow meter, but takes into account the offset value and the offset coefficient, which improves the accuracy of the measurement results.

[0030] In one embodiment, the values ​​of the cumulative water meter 210 and the flow meter 220 in the water inlet pipe 110 and the water outlet pipe 120 can be manually obtained and recorded, and then the obtained values ​​and their corresponding offset values ​​and offset coefficients are substituted into the formula to manually calculate the cumulative water flow and purified water flow of the water purifier.

[0031] In another embodiment, the cumulative water meter 210 and the flow meter 220 can both be connected to the controller, and the cumulative water meter 210 and the flow meter 220 send the measured values ​​to the controller. The controller obtains the final reading of the cumulative water meter 210, and records all values ​​of the flow meter 220 during the entire measurement time period, and calculates the average value of the flow meter 220 based on all values; thereafter, the controller can calculate the cumulative water flow and purified water flow of the water purifier based on the built-in algorithm.

[0032] In some embodiments, in the above step S100, the step of calibrating the flow meter and calculating the offset value and offset coefficient of the flow meter specifically includes:

[0033] The flow meter and the flow limiting device are connected in series in the calibration pipeline. One end of the calibration pipeline is connected to the water supply bucket, and the other end is connected to the calibration bucket. The water supply bucket supplies water to the calibration pipeline so that the flow meter can work, and the calibration bucket receives the water flowing out of the calibration pipeline; the flow limiting device plays a role in limiting the flow, which can specifically be a proportional valve. By adjusting the flow limiting device, the water flow in the calibration pipeline can be adjusted to different flow segments, such as 1-2L / min, 2-3L / min, 3-4L / min, etc. The offset value and offset coefficient of the flow meter in each flow segment will be calculated later.

[0034] For each flow rate segment, the calibration pipe is flowed with water for a time period of T1. After the flow period, the water volume S1 in the calibration bucket is measured. Based on the flow period T1 and the water volume S1 in the calibration bucket, the calibration water flow rate for each flow rate segment can be calculated as M1 = S1 / T1. This standard water flow rate is relatively accurate and can be used as a reference value for calibrating the flowmeter. Simultaneously, the water flow rates measured by the flowmeter during the entire flow period are counted, and the average of all water flow rates is calculated. The flowmeter's offset and offset coefficient are then calculated based on the calibration water flow rate and the average flowmeter values. Considering that the relationship between flow rate and error is linear, the calibration water flow rate and the flowmeter's average value form a linear equation. This allows the calibration water flow rate M1 to be fitted to the corresponding flowmeter calibration function, resulting in the calculation of the flowmeter's offset and offset coefficient. The offset coefficient is the slope of the linear equation, and the offset coefficient is the constant of the linear equation. Using this method, the offset and offset coefficient of the flowmeter can be calculated for each flow rate segment. When subsequently calculating the clean water flow of the water purifier, first determine which flow segment the water flow is in, then apply the offset value and offset coefficient of the corresponding flow segment, and finally calculate the clean water flow based on the water flow measured by the flow meter and the offset value and offset coefficient of the flow segment.

[0035] Since the offset value and the offset coefficient may be different in different water flow segments, this embodiment calculates the offset value and the offset coefficient of the flow meter in different flow segments, which can make the final calculated water flow of the water purifier more accurate.

[0036] In some embodiments, the steps of calibrating the flow meter and calculating the offset value and offset coefficient of the flow meter specifically include:

[0037] The flowmeter, standard flowmeter, and flow limiting device are connected in series in a calibration line. One end of the calibration line is connected to a water supply tank, which supplies water to the calibration line to enable the flowmeter to operate. The standard flowmeter is a highly accurate flowmeter, and its value serves as a reference for the calibration flowmeter. The flow limiting device, specifically a proportional valve, acts as a flow limiter. By adjusting the flow limiting device, the water flow in the calibration line can be adjusted to different flow ranges, such as 1-2 L / min, 2-3 L / min, 3-4 L / min, and so on. The offset value and offset coefficient of the flowmeter in each flow range will be calculated later.

[0038] For each flow segment, the water flow values ​​measured by the standard flow meter and the flow meter are read. Since the water flow value is an instantaneous value, the water flow values ​​read by the standard flow meter and the flow meter are both average values. Considering that the water flow rate and error have a linear relationship, the water flow rate measured by the standard flow meter and the water flow rate measured by the flow meter are related by a linear equation. Therefore, a calibration function can be fitted for the water flow values ​​measured by the standard flow meter and the flow meter, and the offset value and offset coefficient of the flow meter can be calculated, where the offset coefficient is the slope of the linear equation and the offset coefficient is the constant of the linear equation.

[0039] The above method can be used to calculate the offset value and offset coefficient of the flow meter in each flow segment. When subsequently calculating the purified water flow of the water purifier, the flow segment of the water flow is first determined, the offset value and offset coefficient for the corresponding flow segment are then applied, and finally, the purified water flow is calculated based on the water flow measured by the flow meter and the offset value and offset coefficient for that flow segment. Because the offset value and offset coefficient vary in different water flow segments, this embodiment calculates the offset value and offset coefficient of the flow meter in different flow segments, which can make the final calculated purified water flow of the water purifier more accurate.

[0040] In some embodiments, the steps of calibrating the cumulative water meter and calculating the offset value and offset coefficient of the cumulative water meter specifically include:

[0041] The cumulative water meter is connected in series to the calibration pipeline. One end of the calibration pipeline is connected to the water supply bucket, and the other end is connected to the calibration bucket. The water supply bucket supplies water to the calibration pipeline, allowing the cumulative water meter to work, and the calibration bucket receives the water flowing out of the calibration pipeline. The total water supply of the water supply bucket can be manually controlled, so that the water supply bucket has different total water volume segments, such as 0-10L, 10-20L, 20-30L, etc. The offset value and offset coefficient of the cumulative water meter in each total water volume segment will be calculated later.

[0042] For each total water volume segment, after the water in the water supply bucket has drained, the water volume S2 in the calibration bucket is weighed. The water volume in the calibration bucket is relatively more accurate and can be used as a reference value for calibrating the cumulative water meter. Considering that the relationship between water volume and error is linear, the water volume in the calibration bucket and the cumulative water volume of the cumulative water meter are related by a linear equation. This allows us to fit a calibration function for the water volume in the calibration bucket and the cumulative water volume of the cumulative water meter, and calculate the offset value and offset coefficient of the cumulative water meter. The offset coefficient is the slope of this linear equation, and the offset coefficient is the constant of this linear equation.

[0043] The above method can be used to calculate the offset value and offset coefficient of the cumulative water meter in each total water volume segment. When subsequently calculating the cumulative water volume of the water purifier, the total water volume is first determined in which total water volume segment the total water volume is located. The offset value and offset coefficient of the corresponding total water volume segment are then applied. Finally, the cumulative water volume of the water purifier is calculated based on the cumulative water volume measured by the cumulative water meter and the offset value and offset coefficient of the total water volume segment. Because the offset value and offset coefficient may vary in different total water volume segments, this embodiment calculates the offset value and offset coefficient of the cumulative water meter in different total water volume segments, which can make the final calculated cumulative water volume of the cumulative water meter more accurate.

[0044] In some embodiments, the steps of calibrating the cumulative water meter and calculating the offset value and offset coefficient of the cumulative water meter specifically include:

[0045] The cumulative water meter and the standard integrator are connected in series in a calibration pipeline. One end of the calibration pipeline is connected to a water supply barrel. The water supply barrel supplies water to the calibration pipeline so that the cumulative water meter can work. The total water supply of the water supply barrel can be manually controlled so that the water supply barrel has different total water volume segments, such as 0-10L, 10-20L, 20-30L, etc. The offset value and offset coefficient of the cumulative water meter in each total water volume segment will be calculated later.

[0046] For each total water volume segment, after the water in the water supply tank has drained, the cumulative water volume measured by the standard totalizer and the cumulative water meter is read. The cumulative water volume measured by the standard totalizer is relatively more accurate and can be used as a reference value for calibrating the cumulative water meter. Considering that the relationship between water volume and error is linear, the cumulative water volume of the standard totalizer and the cumulative water volume of the cumulative water meter are related by a linear equation. This allows us to fit a calibration function for the cumulative water volume of the standard totalizer and the cumulative water meter, and calculate the offset value and offset coefficient of the cumulative water meter. The offset coefficient is the slope of this linear equation, and the offset coefficient is the constant of this linear equation.

[0047] The above method can be used to calculate the offset value and offset coefficient of the cumulative water meter in each total water volume segment. When subsequently calculating the cumulative water volume of the water purifier, the total water volume is first determined in which total water volume segment the total water volume is located. The offset value and offset coefficient of the corresponding total water volume segment are then applied. Finally, the cumulative water volume of the water purifier is calculated based on the cumulative water volume measured by the cumulative water meter and the offset value and offset coefficient of the total water volume segment. Because the offset value and offset coefficient may vary in different total water volume segments, this embodiment calculates the offset value and offset coefficient of the cumulative water meter in different total water volume segments, which can make the final calculated cumulative water volume of the cumulative water meter more accurate.

[0048] In some embodiments, in the above step S300, the step of calculating the cumulative water flow of the water purifier based on the obtained numerical value and its corresponding offset value and offset coefficient specifically includes: multiplying the numerical value of the cumulative water meter in the water inlet pipe by the offset coefficient of the cumulative water meter, and then adding the product value of the two to the offset value of the cumulative water meter to obtain the cumulative water flow of the water purifier.

[0049] Since the cumulative water volume of the cumulative water meter and the standard water volume are in a linear equation relationship, and the offset coefficient is the slope of the linear equation, and the offset coefficient is the constant of the linear equation, the cumulative water volume of the cumulative water meter is substituted into the equation, so that the value of the cumulative water meter in the water inlet pipe is multiplied by the offset coefficient of the cumulative water meter, and then the product of the two is added to the offset value of the cumulative water meter, and finally the cumulative water flow of the water purifier can be obtained.

[0050] In some embodiments, in the above step S300, the step of calculating the purified water flow of the water purifier based on the obtained numerical value and its corresponding offset value and offset coefficient specifically includes: multiplying the average value of the flow meter in the outlet pipe by the offset coefficient of the flow meter, and then adding the product value of the two to the offset value of the flow meter to obtain the purified water flow of the water purifier.

[0051] Since the water flow rate of the flow meter and the standard water flow rate are in a linear equation relationship, and the offset coefficient is the slope of the linear equation, and the offset coefficient is the constant of the linear equation, the average value of the water flow rate of the flow meter is substituted into the equation, so that the average value of the flow meter in the outlet pipe is multiplied by the offset coefficient of the flow meter, and then the product of the two is added to the offset value of the flow meter to finally obtain the purified water flow of the water purifier.

[0052] The above is a further detailed description of the present invention in conjunction with specific embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention.

Claims

1. A method for measuring the cumulative water flow and the purified water flow of a water purifier, characterized in that: The steps include: Calibrate the flow meter and the accumulating water meter, and calculate the offset value and offset coefficient of the flow meter and the accumulating water meter respectively; Connect two sets of calibrated flow meters and cumulative water meters in series to the water inlet and outlet pipes of the water purifier respectively, and supply water to the water inlet pipe through the water supply system to start the water purifier working; After the water supply reaches the set time, the values ​​of the cumulative water meter and flow meter in the water inlet pipe and the water outlet pipe are obtained, and the cumulative water flow and the purified water flow of the water purifier are calculated based on the obtained values ​​and their corresponding offset values ​​and offset coefficients; The steps of calibrating the flow meter and calculating the offset value and offset coefficient of the flow meter specifically include: connecting the flow meter and a flow limiting device in series in a calibration pipeline, and using a calibration bucket to receive water flowing out of the calibration pipeline; adjusting the water flow of the calibration pipeline to different flow segments through the flow limiting device, and for each flow segment, making the water flow time of the calibration pipeline T1, after the water flow time ends, weighing the water capacity S1 in the calibration bucket, and calculating the calibration water flow M1=S1 / T1 in each flow segment based on the water flow time T1 of the calibration pipeline and the water capacity S1 in the calibration bucket in each flow segment, and then fitting a calibration function based on the calibration water flow M1 in each flow segment and the average value of the corresponding flow meter, and calculating the offset value and offset coefficient of the flow meter in each flow segment; The step of calculating the purified water flow of the water purifier based on the obtained numerical value and its corresponding offset value and offset coefficient specifically includes: determining the flow segment in which the average value of the flow meter in the water outlet pipeline is located, then applying the offset value and offset coefficient of the corresponding flow segment, multiplying the average value of the flow meter in the water outlet pipeline by the offset coefficient of the flow meter, and then adding the product of the two to the offset value of the flow meter to obtain the purified water flow of the water purifier.

2. The method for measuring the cumulative water flow and the purified water flow of a water purifier according to claim 1, characterized in that: The steps of calibrating the cumulative water meter and calculating the offset value and offset coefficient of the cumulative water meter specifically include: connecting the cumulative water meter in series in a calibration pipeline, one end of the calibration pipeline is connected to the water supply bucket, and the other end is connected to the calibration bucket; adjusting the total water supply of the water supply bucket to different total water volume segments, for each total water volume segment, after the water in the water supply bucket flows out, weighing the water capacity S2 in the calibration bucket, fitting a calibration function based on the water capacity S2 in the calibration bucket under each total water volume segment and the cumulative water volume measured by the cumulative water meter, and calculating the offset value and offset coefficient of the cumulative water meter for each total water volume segment.

3. The method for measuring the cumulative water flow and the purified water flow of a water purifier according to claim 1, characterized in that: The steps of calibrating the cumulative water meter and calculating the offset value and offset coefficient of the cumulative water meter specifically include: connecting the cumulative water meter and the standard integrator in series in a calibration pipeline, and connecting one end of the calibration pipeline to the water supply barrel; adjusting the total water supply of the water supply barrel to different total water volume segments, for each total water volume segment, reading the cumulative water volume measured by the standard integrator and the cumulative water meter, and then fitting a calibration function according to the cumulative water volume measured by the standard integrator and the cumulative water meter under each total water volume segment, and calculating the offset value and offset coefficient of the cumulative water meter under each total water volume segment.

4. The method for measuring the cumulative water flow and the purified water flow of a water purifier according to any one of claims 1 to 3, characterized in that: The step of calculating the cumulative water flow of the water purifier based on the obtained numerical value and its corresponding offset value and offset coefficient specifically includes: multiplying the numerical value of the cumulative water meter in the water inlet pipe by the offset coefficient of the cumulative water meter, and then adding the product value of the two to the offset value of the cumulative water meter to obtain the cumulative water flow of the water purifier.

Images