Water purification equipment maintenance program and water purification equipment maintenance system

Abstract

An object of the present invention is to provide a means that is applicable to a water purification device installed in a house and that facilitates the maintenance of the water purification device by reducing the burden of maintenance work. [Solution] The above object can be achieved by a program to be executed by a computer, the program including an information acquisition step, a step of determining the urgency of maintenance, a step of determining the water shortage, and a maintenance output step.

Description

[Technical field]

[0001] The present invention relates to a water purification device maintenance program and a water purification device maintenance system. [Background technology]

[0002] The autonomous circulation type water purification system will be installed in each home and will purify domestic wastewater discharged from drainage facilities such as washrooms, toilets, bathrooms, laundry rooms, and kitchens so that it can be reused.

[0003] The water purification device is periodically maintained by replacing expendable and deteriorated parts, etc. Meanwhile, unexpected maintenance is also performed based on emergency information such as error information from the water purification device notifying the malfunction of the water purification device and contact information from users.

[0004] However, the number of maintenance workers is limited compared to the number of water purification devices. The more water purification devices the maintenance workers are responsible for, the greater the burden on them becomes. Therefore, in order for a limited number of maintenance workers to maintain a large number of water purification devices, efficient maintenance work is required, such as identifying water purification devices that should be prioritized for maintenance and efficiently visiting the water purification devices that should be maintained. For example, Patent Document 1 discloses a maintenance support device for water treatment equipment that determines the priority of water treatment equipment to be maintained based on the contents of an alarm from the water treatment equipment, creates a patrol route, determines the contents of the maintenance work based on the operation data and the contents of the alarm from the water treatment equipment, and checks the inventory of items necessary for the maintenance work and arranges for their transportation. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6617786 Summary of the Invention [Problem to be solved by the invention]

[0006] According to the maintenance support device described in Patent Document 1, it is possible to create a tour route that enables efficient travel around a plurality of factories, and to support maintenance work.

[0007] However, the maintenance support device described in Patent Document 1 is intended for large-scale water treatment facilities in factories, etc., and is not intended for water purification devices, which require urgent maintenance. For example, if an abnormality occurs in a water purification device installed in a house, the resident of the house who uses the water purification device will be unable to use water, causing significant inconvenience in daily life.

[0008] Furthermore, in the maintenance support device described in Patent Document 1, the contents of the alarm are not associated with the contents of the operation data, and the water treatment equipment for which maintenance work should be performed is determined only by the contents of the alarm. This requires the maintenance worker to closely examine the contents of the alarm to determine the water treatment equipment for which maintenance work should be performed, which places a heavy burden on the maintenance worker.

[0009] Therefore, an object of the present invention is to provide a means that is applicable to a water purification device installed in a home and that facilitates maintenance of the water purification device while reducing the workload. [Means for solving the problem]

[0010] The inventors of the present invention have found, through intensive research to solve the above problems, that error information reporting malfunctions in water purifiers can be roughly divided into two categories: serious and non-serious, and that in the case of water purifiers installed in homes, information on the remaining water volume is essential. They then thought that by combining these, it might be possible to evaluate the urgency of maintenance of the water purifier.

[0011] Based on this idea, the inventors have repeated trial and error, and as a result, have succeeded in creating a water purification device maintenance program and a water purification device maintenance system using said program, which include an information acquisition step, a maintenance urgency determination step, a water shortage determination step, and a maintenance output step, in order to solve the problems of the present invention. The present invention has been completed based on the idea and successful examples first conceived by the inventors.

[0012] That is, according to each aspect of the present invention, the following embodiments are provided. [1] A water purification device maintenance program for execution by a computer, The method includes an information acquisition step, a maintenance urgency determination step, a water shortage determination step, and a maintenance output step, The information acquiring step acquires error information and remaining water volume information from the water purification device, The step of determining whether or not maintenance is urgent includes determining whether or not maintenance is urgent for the water purification device by comparing the acquired error information with reference error information; The water shortage determination step includes: determining whether the water purification device is in a state of water shortage by comparing the acquired remaining water volume information with reference remaining water volume information; and The maintenance output step outputs a high level of urgency for the water purification device's maintenance when it is determined that the maintenance urgency for the water purification device is high, outputs a medium level of urgency for the water purification device's maintenance when it is determined that the maintenance urgency for the water purification device is low and the water shortage for the water purification device is high, or outputs a low level of urgency for the water purification device's maintenance when it is determined that the maintenance urgency for the water purification device is low and the water shortage for the water purification device is low. The program. [2] The program described in item [1], wherein the error information is at least one type of error information selected from the group consisting of error information based on a malfunction of the water purification device, error information based on deterioration of parts of the water purification device, and error information based on deterioration of water quality in the water purification device. [3] The program described in item [1] or [2], wherein the information acquisition step acquires error information and remaining water volume information from two or more water purification devices. [4] The program according to item [3], wherein the maintenance output step prioritizes output of a water purification device that requires maintenance with a higher urgency. [5] The program described in item [3], wherein the maintenance output step further outputs a grace period until maintenance begins and / or an estimated time until maintenance is completed based on the urgency of the maintenance of the water purification device. [6] The program described in item [3], wherein the maintenance output step further outputs a maintenance method based on the urgency of the maintenance of the water purification device. [7] A water purification device maintenance server connected to a network, The device includes a communication unit, a control unit, and a storage unit, The communication unit communicates with the water purification device; and The control unit executes the program described in item [1] stored in the memory unit, of the server. [8] A water purification device maintenance system comprising: The server according to item [7] and a water purification device are provided. The system, wherein the water purification device is maintained based on the output of the server. [9] A maintenance method for a water purification device, comprising: The method includes an information acquisition step, a maintenance urgency determination step, a water shortage determination step, and a maintenance output step, The information acquiring step acquires error information and remaining water volume information from the water purification device, The step of determining whether or not maintenance is urgent includes determining whether or not maintenance is urgent for the water purification device by comparing the acquired error information with reference error information; The water shortage determination step includes: determining whether the water purification device is in a state of water shortage by comparing the acquired remaining water volume information with reference remaining water volume information; and The maintenance notification step outputs a message indicating that the urgency of maintenance of the water purification device is high when it is determined that the urgency of maintenance of the water purification device is high, outputs a message indicating that the urgency of maintenance of the water purification device is medium when it is determined that the urgency of maintenance of the water purification device is low and the water shortage of the water purification device is high, or outputs a message indicating that the urgency of maintenance of the water purification device is low when it is determined that the urgency of maintenance of the water purification device is low and the water shortage of the water purification device is low. Effect of the Invention

[0013] According to the present invention, by evaluating and outputting the urgency of maintenance of the water purification device based on error information reporting a functional abnormality in the water purification device and information on the remaining water volume in the water purification device, the burden of maintenance work can be reduced and maintenance can be made easier, even for water purification devices installed in homes.

[0014] According to the present invention, users of water purification devices are relieved from the worries of water shortages, and maintenance workers for the water purification devices can accurately and efficiently determine which of a plurality of water purification devices should be given priority for maintenance. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a schematic diagram showing a water purification device maintenance system according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a block diagram showing the configuration of the water purification device maintenance system. [Diagram 3] FIG. 3 is a diagram showing an example of the data structure of the remaining water amount DB. [Figure 4] FIG. 4 is a diagram illustrating an example of a data structure of the operation DB. [Diagram 5] FIG. 5 is a diagram illustrating an example of a data structure of the error DB. [Figure 6] FIG. 6 is a diagram illustrating an example of a data structure of the water purification device DB. [Figure 7]FIG. 7 is a diagram illustrating an example of a data structure of the maintenance work DB. [Figure 8] FIG. 8 is a block diagram showing the functions of the water purification device maintenance server. [Figure 9] FIG. 9 is a flowchart illustrating the water purification device maintenance program. [Figure 10] FIG. 10 is a diagram showing an example of a terminal application screen of a maintenance worker on which the urgency of maintenance of a water purification device is output. [Figure 11] FIG. 11 is a diagram showing an example of a user's terminal application screen on which the urgency of maintenance of the water purification device is output. [Figure 12] FIG. 12 is a diagram showing an example of a terminal application screen of a maintenance worker who has inputted maintenance work for a water purification device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Each aspect of the present invention will be described in detail below, but the present invention can take various forms as long as it achieves its object.

[0017] Unless otherwise specified, each term in this specification is used in the sense commonly used by those skilled in the art of water treatment and the like, and should not be construed as having an unduly limiting meaning. In addition, the speculations and theories made in this specification are based on the inventors' knowledge and experience to date, and therefore the present invention is not limited solely to such speculations and theories.

[0018] "Comprise, contain, include" means that elements other than those explicitly stated to be included can be added (same meaning as "comprise at least"), but also encompasses "consist of" and "essentially consist of." That is, "comprise" can mean including the explicitly stated elements and any one or more elements, consisting of the explicitly stated elements, or essentially consisting of the explicitly stated elements. "Have" is a synonym for "include." Elements include parts, means, ingredients, steps, conditions, parameters, and other limitations. "And / or" means any one or any or all combinations of two or more of the associated listed items.

[0019] "Maintenance" of a water purification device is a comprehensive concept related to keeping the water purification device in normal operation, including the upkeep, maintenance and management of the water purification device, as well as repair of the water purification device.

[0020] According to one aspect of the present invention, there is provided a water purification device maintenance program for causing a computer to execute an evaluation of the urgency of maintenance of a water purification device and outputting the evaluation. The water purification device maintenance program includes, as basic steps, an information acquisition step, a determination step of the urgency of maintenance, a water shortage determination step, and a maintenance output step.

[0021] Another aspect of the present invention is a water purification device maintenance server for executing a water purification device maintenance program. The water purification device maintenance server allows a water purification device maintenance worker to find a water purification device with a high maintenance priority from among multiple water purification devices, and perform maintenance of the water purification device without restricting the user's daily life. In addition, the water purification device maintenance server allows a user of the water purification device to check malfunctions of the water purification device and the amount of water that can be used, so that the user can understand the time until water runs out or restrictions in daily life. Another aspect of the present invention is a water purification device maintenance system including a water purification device maintenance server and a water purification device.

[0022] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described with reference to the drawings. In each drawing, elements that are less relevant to the present invention are omitted.

[0023] As shown in FIG. 1, a water purification device maintenance server 1 acquires remaining water volume information in real time or periodically from a water purification device P installed in a house F via a network such as the Internet. In addition, the water purification device maintenance server 1 acquires error information via the network when a functional abnormality occurs in the water purification device P. The water purification device maintenance server 1 evaluates and outputs the urgency of maintenance based on the remaining water volume information and the error information. A supervisor S and / or a maintenance worker M can use the water purification device maintenance server 1 to identify a water purification device P that should be prioritized for maintenance among multiple water purification devices P according to the urgency of maintenance, or determine the order of maintenance. The water purification device maintenance server 1 can acquire remaining water volume information and error information from two or more multiple water purification devices P.

[0024] The water purification device maintenance server 1 compares the acquired error information and remaining water volume information with the respective reference information stored in the memory unit of the water purification device maintenance server 1. The comparison of these pieces of information with the reference information may be performed one after the other, or both may be performed simultaneously. The water purification device maintenance server 1 compares the error information with the reference error information to determine the urgency of maintenance of the water purification device P; and compares the acquired remaining water volume information with the reference remaining water volume information to determine the water shortage of the water purification device P.

[0025] The water purification device maintenance server 1 evaluates and outputs the urgency of maintenance of the water purification device P based on the determined urgency of maintenance and water shortage of the water purification device P. If the water purification device maintenance server 1 has an output means, the urgency of maintenance of the water purification device P is output in the water purification device maintenance server 1, and a monitor S who can see it checks the urgency of maintenance for each water purification device P. If the water purification device maintenance server 1 does not have an output means, the monitor S can check the urgency of maintenance for each water purification device P via the network. Alternatively, if the water purification device maintenance server 1 is operating normally, it is not necessary to have a monitor S.

[0026] The water purification device maintenance server 1 outputs the urgency of maintenance via the network to a terminal TM, such as a smartphone, tablet terminal, or PC, owned by a maintenance worker M in charge of the water purification device P. Furthermore, the water purification device maintenance server 1 outputs the urgency of maintenance via the network to a terminal TU owned by the water purification device P or a user U of the water purification device P.

[0027] As shown in Fig. 2, the water purification device 2 includes a control unit 20, a monitoring unit 21, a communication unit 22, and a water treatment main body 23. The water treatment main body 23 includes a water storage tank and components for performing water treatment as basic components, and has a structure that functions to treat wastewater received from outside the system, store the resulting treated water, and discharge the stored treated water to the outside of the system. Examples of components for performing water treatment in the water treatment main body 23 include water treatment tanks such as chemical treatment tanks and biological treatment tanks, activated carbon filters, reverse osmosis membranes, membrane filters, membrane modules such as degassing membranes, electrical deionization devices, pumps, valves, and other components. It is preferable to assign a unique ID (identification information) to each component of the water treatment main body 23.

[0028] The control unit 20 sends operating information such as the amount of treated water (residual water volume), water quality, and water treatment status detected using various sensors (not shown) provided in the water purification device 2 to the water purification device maintenance server 1 via the network via the communication unit 22.

[0029] The monitoring unit 21 monitors the status information and operation information of each component of the water treatment main body 23, and if this information is not within a normal range, it sends error information to the water purification device maintenance server 1 via the network by the communication unit 22. The control unit 20 may also have the function of the monitoring unit 21.

[0030] The water purification device maintenance server 1 has a CPU (Central Processing Unit) as a control unit 10 that controls the overall operation of the water purification device maintenance server 1. The control unit 10 is based on an OS (Operating System) program, and executes application programs including a water purification device maintenance program thereon. A memory unit 11 and a communication unit 12 are connected to the control unit 10 via a bus. Other members such as a display unit and an input unit may also be connected to the control unit 10. The display unit is, for example, a liquid crystal display, and displays various screens. The input unit is, for example, a unit that accepts various operations from a person who manages the water purification device maintenance server 1, and may be a keyboard, a mouse, or the like.

[0031] The storage unit 11 stores programs such as a water purification device maintenance program and an OS, and data (database) such as reference remaining water volume information and reference error information. The storage unit 11 may be, for example, a ROM (Read Only Memory), a RAM (Random Access Memory), a hard disk device, or a combination of these.

[0032] Various programs are stored in the memory unit 11, and the control unit 10 executes various processes according to these programs to realize each function of the water purification device maintenance server 1. The memory unit 11 has a water purification device maintenance program, a remaining water volume database (DB), an operation DB, an error DB, a water purification device DB, a maintenance work DB, etc. The memory unit 11 also stores the results of communication with the water purification device 2 performed by the communication unit 12 and the results of the programs executed by the control unit 10.

[0033] As shown in Fig. 3, the remaining water amount DB stores the amount of water (remaining water amount) in the water treatment main body 23 of the water purification device 2 together with the date and time as remaining water amount information. The remaining water amount DB also stores reference remaining water amount information such as the average amount of water used and the time during which water can be used, calculated using AI (Artificial Intelligence) or the like from the history of the acquired remaining water amount information. The reference remaining water amount information may be a preset value. The reference remaining water amount information may be set individually depending on the user of the water purification device, the model, the capacity of the water storage tank, etc.

[0034] As shown in Fig. 4, the operation DB stores operation information acquired by a sensor provided in the water treatment main body 23. The remaining water volume DB and the operation DB may exist separately or may exist together. For example, the operation information may be stored in the remaining water volume DB.

[0035] As shown in FIG. 5, the error DB stores error information acquired from the water purification device. The error information includes the content of the error (error code), the time when the error occurred, the time when the error information was acquired, etc. The error DB may also record the cause of the error that is identified by recovery work or the like. Specific error information includes error information based on malfunction of the water purification device 2, error information based on deterioration of parts of the water purification device 2, error information based on deterioration of water quality in the water storage tank of the water purification device 2, etc. The error DB stores reference error information related to the need for maintenance corresponding to the content of the error. The reference error information includes error information that the water purification device 2 is unable to supply water or that may result in the inability to supply water.

[0036] Malfunctions in the operation of the water purification device 2 may include, in addition to an inability to supply water from the water purification device 2, deterioration in the quality of treated water in the final water storage tank in the water treatment main body of the water purification device 2, deterioration in the state of microorganisms in the biological treatment tank, and communication errors between the water purification device 2 and the water purification device maintenance server 1. Furthermore, the error information also includes reports from users (for example, information entered in a chat within the app, such as the final treated water smelling bad).

[0037] As shown in FIG. 6, the water purification device DB stores information such as the ID, location, user name, number of errors, and regular maintenance date of the water purification device.

[0038] As shown in FIG. 7, the maintenance work DB stores information related to maintenance work, such as the ID and company name of the maintenance worker, the area in charge, and the ID of the water purification device being worked on.

[0039] The communication unit 12 of the water purification device maintenance server 1 communicates with the communication unit 22 of the water purification device 2, the terminal TM of the maintenance worker M, and / or the terminal TU of the user U via the network.

[0040] When the control unit 10 executes the water purification device maintenance program stored in the memory unit 11, an information acquisition unit 101, a maintenance urgency determination unit 102, a water shortage determination unit 103, a maintenance output unit 104, and the like are realized as shown in Fig. 8. The processing of each unit will be described with reference to the flowchart shown in Fig. 9. The flowchart shown in Fig. 9 explains the processing routine of the water purification device maintenance program of one embodiment of the present invention and each step of the water purification device maintenance method of one embodiment of the present invention.

[0041] The information acquisition unit 101 acquires error information and remaining water volume information from the water purification device 2 (S101). The acquired error information and remaining water volume information are stored in an error DB and a remaining water volume DB, respectively. The error information and remaining water volume information are acquired from the water purification device 2 via a network. The error information and remaining water volume information may be transmitted from the water purification device 2 to the water purification device maintenance server 1 automatically from the water purification device 2, or may be transmitted by the user U operating the terminal TU.

[0042] The maintenance urgency determination unit 102 compares the acquired error information with reference error information stored in the error DB (S201). Based on the comparison result, the maintenance urgency, such as whether the acquired error information is serious or minor, is determined (S202). The maintenance urgency determination may be either qualitative using text information or quantitative using a certain numerical range. Note that if there is no water or only a small amount of water in the water tank, the error information is also determined to be one requiring high maintenance urgency.

[0043] The water shortage determination unit 103 compares the acquired remaining water amount information with reference remaining water amount information stored in the remaining water amount DB (S301). Based on the comparison result, the acquired remaining water amount information determines whether the water purification device is short of water, will be short of water in the near future, or has a margin of water remaining in the water purification device (S302). The water shortage determination may be either a qualitative one using text information or a quantitative one using a certain numerical range.

[0044] The maintenance urgency determination step by the maintenance urgency determination unit 102 and the water shortage determination step by the water shortage determination unit 103 may be performed one after the other, or may be performed in parallel.

[0045] The maintenance output unit 104 evaluates and outputs the urgency of maintenance of the water purification device 2 based on the details of the urgency of maintenance determined by the maintenance urgency determination unit 102 and the details of the water shortage determined by the water shortage determination unit 103.

[0046] Based on the degree of urgency of maintenance of the water purification device 2 (S401), if it is determined that the urgency of maintenance is high, the maintenance output unit 104 outputs that the urgency of maintenance of the water purification device 2 is high (S402).

[0047] When it is determined that the urgency of maintenance is low based on the level of water shortage of the water purification device 2 (S403), the maintenance output unit 104 outputs that the urgency of maintenance of the water purification device 2 is medium if it is determined that the water shortage is high (S404), or outputs that the urgency of maintenance of the water purification device 2 is low if it is determined that the water shortage is low (S405).

[0048] The urgency of the maintenance of the water purification device 2 is output to the water purification device maintenance server 1, the terminal TM of the maintenance worker M, and / or the terminal TU of the user U. Examples of the output method include outputting an alarm sound according to the urgency of the maintenance, outputting text and / or images on the display unit, or a combination of these.

[0049] It is preferable that the maintenance output unit 104 gives priority to outputting information about a water purification device with a higher level of urgency of maintenance. Furthermore, the maintenance output unit 104 may output a grace period until the maintenance work is started, an estimated time until the maintenance work is completed, a maintenance method, and the like, based on the urgency of the maintenance of the water purification device.

[0050] According to the water purification device maintenance server 1, multiple water purification devices P can be prioritized and maintained in order, reducing the burden on the maintenance worker M and further avoiding inconvenience in the daily life of the user U, thereby enabling efficient maintenance of the water purification devices P. In particular, the advantage of being able to quickly perform maintenance work on water purification devices P that require maintenance with a high degree of urgency is great. In other words, according to the water purification device maintenance server 1, an efficient patrol route can be created or proposed.

[0051] The water purification device maintenance server 1 may appropriately correct the evaluation of the urgency of maintenance based on the error information and environmental information in which the error occurred, such as disaster information, regional drought information, etc., which indicates that the water must be used regardless of the quality of the water. Such corrections may be made manually or mechanically using AI or the like.

[0052] The water purification device maintenance server 1 enables the maintenance worker M to start work early when error information is issued or when there is a sign that error information will be issued. At this time, if the remaining water amount in the water purification device P is insufficient, an alert is sent, and if it is sufficient, the priority of maintenance may be calculated from the remaining water amount, water quality, and the seriousness of the error that occurred from the occurrence location, and the maintenance worker may be notified.

[0053] The water purification device maintenance server 1 may further calculate the urgency taking into account the water usage pattern in the daily life of the user U. Furthermore, the priority of the corresponding maintenance workers M may be determined based on the current location of the multiple maintenance workers M in charge of the area of ​​the house F where the water purification device P is installed and the distance between the installation location of the water purification device P, and the maintenance worker M to be responsible may be selected. At this time, the user U may be reassured by being informed of the behavior of the maintenance workers M, and may also be informed of the time when water can be used and the waiting time related to the remaining water amount.

[0054] The water purification device maintenance server 1 can output the urgency of maintenance of the water purification device P to a terminal held by a maintenance worker M, a user U and / or a supervisor S using dedicated application software (hereinafter also referred to as an app).

[0055] Fig. 10 shows an example of outputting the urgency of maintenance of a water purification device P to an app on a terminal TM of a maintenance worker M. In Fig. 10, "Device stopped" is output for a user who uses a water purification device for which the urgency of maintenance is high, and "Action required" is output for a user who uses a water purification device for which the urgency of maintenance is medium.

[0056] Fig. 11 shows an example of outputting the urgency of maintenance of the water purification device P to an application on the terminal TU of a user U. In Fig. 11, an output is output indicating that an emergency response is required for abnormal locations where the urgency of maintenance is high, an output is output indicating that a response is required for abnormal locations where the urgency of maintenance is medium, and an output is output indicating that a warning is required for abnormal locations where the urgency of maintenance is low.

[0057] The maintenance worker M can create a work report using the application and transmit it to the water purification device maintenance server 1. Fig. 12 shows an example in which a work report is created using the application on the terminal TM of the maintenance worker M.

[0058] The present invention is not limited to the above-described embodiment, and the components can be modified and embodied in the implementation stage without departing from the gist of the invention. In addition, various inventions can be formed by appropriately combining the multiple components disclosed in the above-described embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, components from different embodiments may be appropriately combined. [Industrial Applicability]

[0059] The water purification device maintenance program and water purification device maintenance system of one embodiment of the present invention can be used by water purification device maintenance workers to efficiently maintain the water purification device, and can also be used by users of the water purification device to use the water from the water purification device on a daily and ongoing basis. [Explanation of symbols]

[0060] 1. Water purification equipment maintenance server 2. Water purification equipment 10. Water purification equipment maintenance system control section 11 Water purification equipment maintenance system memory section 12 Water purification equipment maintenance system communication section 20 Water purification device control section 21 Water Purification Equipment Monitoring Division 22 Water Purification Equipment Communication Department 23 Water purification device water treatment main body

Claims

1. A water purification device maintenance program for causing a computer to execute the program, The method includes an information acquisition step, a maintenance urgency determination step, a water shortage determination step, and a maintenance output step, The information acquiring step acquires error information and remaining water volume information from the water purification device, The step of determining whether maintenance is urgent includes determining whether maintenance is urgent for the water purification device by comparing the acquired error information with reference error information; The water shortage determination step includes: determining whether the water purification device is in a state of water shortage by comparing the acquired remaining water volume information with reference remaining water volume information; and The maintenance output step outputs a high level of urgency for the maintenance of the water purification device when it is determined that the urgency for the maintenance of the water purification device is high, outputs a medium level of urgency for the maintenance of the water purification device when it is determined that the urgency for the maintenance of the water purification device is low and the water shortage of the water purification device is high, and outputs a low level of urgency for the maintenance of the water purification device when it is determined that the urgency for the maintenance of the water purification device is low and the water shortage of the water purification device is low. The program.

2. The program according to claim 1, wherein the error information is at least one type of error information selected from the group consisting of error information based on operational malfunction of the water purification device, error information based on deterioration of parts of the water purification device, and error information based on deterioration of water quality in the water purification device.

3. 3. The program according to claim 1, wherein the information acquisition step acquires error information and remaining water volume information from two or more water purification devices.

4. The program according to claim 3 , wherein the maintenance output step gives a higher priority to a water purification device requiring maintenance with a higher urgency.

5. 4. The program according to claim 3, wherein the maintenance output step further outputs a grace period until the start of maintenance and / or an estimated time until the completion of maintenance based on an urgency of the maintenance of the water purification device.

6. The program according to claim 3 , wherein the maintenance output step further outputs a maintenance method based on an urgency of the maintenance of the water purification device.

7. A water purification device maintenance server connected to a network, The device includes a communication unit, a control unit, and a storage unit, The communication unit communicates with the water purification device; and The server according to claim 1 , wherein the control unit executes the program stored in the storage unit.

8. A water purification device maintenance system, comprising: A system comprising the server according to claim 7 and a water purification device, The system, wherein the water purification device is maintained based on the output of the server.

9. A maintenance method for a water purification device, comprising: The method includes an information acquisition step, a maintenance urgency determination step, a water shortage determination step, and a maintenance output step, The information acquiring step acquires error information and remaining water volume information from the water purification device, The step of determining whether maintenance is urgent includes determining whether maintenance is urgent for the water purification device by comparing the acquired error information with reference error information; The water shortage determination step includes: determining whether the water purification device is in a state of water shortage by comparing the acquired remaining water volume information with reference remaining water volume information; and The maintenance output step outputs that the urgency of maintenance of the water purification device is high when it is determined that the urgency of maintenance of the water purification device is high, outputs that the urgency of maintenance of the water purification device is medium when it is determined that the urgency of maintenance of the water purification device is low and the water shortage of the water purification device is high, and outputs that the urgency of maintenance of the water purification device is low when it is determined that the urgency of maintenance of the water purification device is low and the water shortage of the water purification device is low.

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