Equipment management system, equipment management device, equipment management method, and program

Abstract

This equipment management system acquires equipment information including operation data and a model name for each of a plurality of equipment installed in a facility, receives an input of a maintenance priority degree indicating the priority degree of implementing maintenance of the equipment, calculates at least two maintenance periods including a first maintenance period for early implementation of a replacement of a component used in the equipment and a second maintenance period later than the first maintenance period on the basis of an operation time based on the acquired operation data, receives an input of task information relating to a task time and cost necessary to replace the component in each piece of equipment, and creates and outputs a maintenance plan for the equipment on the basis of the calculated maintenance periods, the inputted maintenance priority degree, and the inputted task time and cost.

Description

[Technical Field]

[0001] The present disclosure relates to a device management system, a device management apparatus, a device management method, and a program. [Background technology]

[0002] When performing maintenance on multiple devices, it is preferable from a cost perspective to perform maintenance on multiple devices simultaneously in one business trip, as this reduces travel expenses, etc. For example, Patent Document 1 discloses a system that proposes a combination of maintenance timing and devices to be maintained that will minimize the total cost, which is the sum of running costs and maintenance costs. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2021 / 205983 Summary of the Invention [Problem to be solved by the invention]

[0004] When equipment breaks down, it can result in opportunity losses. For example, an example of opportunity loss is when a restaurant is unable to operate due to an air conditioner failure in the summer. While some equipment installed in a facility has a significant impact on opportunity losses, as in the restaurant example mentioned above, other equipment has a small impact on opportunity losses. However, the technology disclosed in Patent Document 1 has the problem that, even if it is possible to propose a maintenance plan that combines the maintenance timing and equipment to be maintained so that the total running cost and maintenance cost is minimized, it does not take into account the cost of opportunity losses due to equipment breakdown.

[0005] The present disclosure has been made in consideration of the above-mentioned circumstances, and one of its objectives is to provide an equipment management system, an equipment management device, an equipment management method, and a program that propose equipment maintenance plans that also take into account the cost of lost opportunities. [Means for solving the problem]

[0006] The equipment management system according to the present disclosure includes an equipment information acquisition unit that acquires equipment information including model names and operation data of each of a plurality of equipment installed in a facility, a maintenance information reception unit that receives an input of a maintenance priority indicating a priority of performing maintenance on the equipment, and a maintenance information reception unit that receives the operation data acquired by the equipment information acquisition unit. Included The system includes a maintenance timing calculation unit that calculates two or more maintenance timings, including a first maintenance timing for early replacement of parts used in the equipment based on operating hours, and a second maintenance timing that is later than the first maintenance timing; a work information receiving unit that receives input of work information related to the work time and cost required to replace the parts of each of the equipment; and a maintenance plan creation unit that creates and outputs a maintenance plan for the equipment based on the maintenance timings calculated by the maintenance timing calculation unit, the maintenance priority input to the maintenance information receiving unit, and the work time and cost input to the work information receiving unit.

[0007] The equipment management device according to the present disclosure includes an equipment information acquisition unit that acquires equipment information including model names and operation data of each of a plurality of equipment installed in a facility, a maintenance information reception unit that receives an input of a maintenance priority indicating a priority of performing maintenance on the equipment, and a maintenance information reception unit that receives the operation data acquired by the equipment information acquisition unit. IncludedThe system includes a maintenance timing calculation unit that calculates two or more maintenance timings, including a first maintenance timing for early replacement of parts used in the equipment based on operating hours, and a second maintenance timing that is later than the first maintenance timing; a work information receiving unit that receives input of work information related to the work time and cost required to replace the parts of each of the equipment; and a maintenance plan creation unit that creates and outputs a maintenance plan for the equipment based on the maintenance timings calculated by the maintenance timing calculation unit, the maintenance priority input to the maintenance information receiving unit, and the work time and cost input to the work information receiving unit.

[0008] Further, a device management method in a device management system according to the present disclosure includes a step in which a device information acquisition unit acquires device information including model names and operation data of each of a plurality of devices installed in a facility; a step in which a maintenance information reception unit receives an input of a maintenance priority indicating a priority for performing maintenance on the devices; and a maintenance timing calculation unit calculates a maintenance timing based on the operation data acquired by the device information acquisition unit. Included The method includes a step of calculating two or more maintenance periods based on operating hours, including a first maintenance period for replacing parts used in the equipment earlier and a second maintenance period later than the first maintenance period; a step in which a work information receiving unit receives input of work information related to the work time and cost required to replace the parts of each of the equipment; and a step in which a maintenance plan creating unit creates and outputs a maintenance plan for the equipment based on the maintenance period calculated by the maintenance period calculating unit, the maintenance priority input to the maintenance information receiving unit, and the work time and cost input to the work information receiving unit.

[0009] The program according to the present disclosure includes a step of causing a computer to acquire equipment information including a model name and operation data of each of a plurality of equipment installed in a facility, a step of receiving an input of a maintenance priority indicating a priority of performing maintenance on the equipment, and a step of causing a computer to execute the program. IncludedThe system executes the steps of: calculating, based on operating hours, two or more maintenance periods including a first maintenance period for replacing parts used in the equipment earlier, and a second maintenance period later than the first maintenance period; accepting input of work information relating to the work time and costs required to replace the parts of each of the equipment; and creating and outputting a maintenance plan for the equipment based on the calculated maintenance periods, the input maintenance priority, and the input work time and costs. [Effects of the Invention]

[0010] According to the present disclosure, it is possible to propose a maintenance plan for equipment that also takes into account the cost of lost opportunities. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a system diagram showing an example of the configuration of a device management system according to a first embodiment. [Figure 2] 1 is a schematic block diagram showing an example of the configuration of an air conditioner according to a first embodiment. [Figure 3] FIG. 1 is a schematic block diagram showing an example of the configuration of a device management device according to a first embodiment. [Figure 4] FIG. 4 is a diagram showing an example of a calculation result of a maintenance timing according to the first embodiment. [Figure 5] FIG. 2 is a diagram showing an example of a maintenance plan according to the first embodiment. [Figure 6] 5 is a flowchart showing an example of a maintenance schedule creation process according to the first embodiment. [Figure 7] FIG. 10 is a schematic block diagram showing an example of the configuration of a device management device according to a second embodiment. [Figure 8] 10 is a flowchart showing an example of a maintenance schedule creation process according to the second embodiment. [Figure 9] FIG. 10 is a diagram showing an example of setting work conditions according to the second embodiment. [Figure 10] FIG. 10 is a schematic block diagram showing an example of the configuration of a device management device according to a fourth embodiment. [Figure 11]FIG. 13 is a schematic block diagram showing an example of the configuration of a device management device according to a fifth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment will be described with reference to the drawings. First Embodiment First, an example of the configuration of a device management system according to this embodiment will be described.

[0013] (Device Management System Configuration) FIG. 1 is a system diagram showing an example of the configuration of a device management system according to this embodiment. The illustrated equipment management system 1 is a system that manages equipment installed in a facility and supports equipment maintenance. In this example, the equipment to be managed is an air conditioner. The equipment management system 1 is configured to include air conditioners 100 installed in the facility, adapters 150, and an equipment management device 30.

[0014] The air conditioner 100 is connected to a communication network NW via an adapter 150. The adapter 150 is a device that connects devices such as the air conditioner 100 to the communication network NW. The communication network NW includes the Internet, a mobile phone communication network, a LAN (Local Area Network), etc. For example, the air conditioner 100 includes an outdoor unit 10 and an indoor unit 20.

[0015] 2 is a schematic block diagram showing an example of the configuration of an air conditioner 100 according to this embodiment. The outdoor unit 10 includes an outdoor unit fan 11, an outdoor unit fan motor 12 that drives the rotation of the outdoor unit fan 11, an outdoor unit compressor 13, an outdoor unit heat exchanger 14, a four-way valve 15, an expansion valve 16, an outdoor unit control unit 18, etc. The indoor unit 20 includes an indoor unit fan 21, an indoor unit fan motor 22 that drives the rotation of the indoor unit fan 21, an indoor unit heat exchanger 24, an indoor unit control unit 28, a filter 29, etc.

[0016] The outdoor unit 10 and the indoor unit 20 are connected by a refrigerant pipe 5 through which a refrigerant flows. By switching a four-way valve 15 provided in the outdoor unit 10 to change the direction of circulation of the refrigerant, the operation mode can be switched between heating and cooling.

[0017] During heating operation, the gaseous refrigerant compressed by the outdoor unit compressor 13 flows through the four-way valve 15 to the indoor unit heat exchanger 24. The refrigerant in the indoor unit heat exchanger 24 exchanges heat with the surrounding air to warm it. The refrigerant that has become liquid through heat exchange passes through the expansion valve 16 and flows into the outdoor unit heat exchanger 14. The refrigerant in the outdoor unit heat exchanger 14 exchanges heat with the surrounding air. The refrigerant that has become gaseous through heat exchange returns to the outdoor unit compressor 13.

[0018] During cooling operation, the gaseous refrigerant compressed by the outdoor unit compressor 13 flows through the four-way valve 15 into the outdoor unit heat exchanger 14. The refrigerant in the outdoor unit heat exchanger 14 exchanges heat with the surrounding air. The refrigerant that has become liquid through heat exchange passes through the expansion valve 16 and flows into the indoor unit heat exchanger 24. The refrigerant in the indoor unit heat exchanger 24 exchanges heat with the surrounding air to cool it. The refrigerant that has become gaseous through heat exchange returns to the outdoor unit compressor 13.

[0019] The outdoor unit control unit 18 controls each part of the outdoor unit 10. For example, the outdoor unit control unit 18 controls the outdoor unit fan motor 12 according to the air volume setting, etc. The indoor unit control unit 28 controls each part of the indoor unit 20. For example, the indoor unit control unit 28 controls the indoor unit fan motor 22 according to the air volume setting, etc. The indoor unit 20 is also provided with a filter 29 in the middle of the air flow generated by the rotation of the indoor unit fan 21 (for example, the air flow from the outside to the inside of the indoor unit 20) to remove dust, dirt, gas, etc. from the air.

[0020] In addition, the outdoor unit control unit 18 and the indoor unit control unit 28 have communication functions and are connected by communication lines for communication between the outdoor unit control unit 18 and the indoor unit control unit 28, and for communication with the adapter 150.

[0021] Returning to FIG. 1, the equipment management device 30 is configured as, for example, a cloud server, and is composed of one or more server devices connected via a communication network NW. The equipment management device 30 and the air conditioner 100 can send and receive data via the communication network NW. Although FIG. 1 illustrates one air conditioner 100, there are multiple air conditioners 100 that can communicate with the equipment management device 30. For example, the equipment management device 30 communicates with multiple air conditioners 100 installed in a facility that it manages as a maintenance target. The equipment management device 30 also communicates with multiple air conditioners 100 installed in each of the multiple facilities that it manages as a maintenance target.

[0022] For example, the equipment management device 30 communicates with a plurality of air conditioners 100 installed in a facility to acquire information about the air conditioners 100 and create a maintenance plan.

[0023] (Configuration of device management device) 3 is a schematic block diagram showing an example of the configuration of a device management device 30 according to this embodiment. The device management device 30 is, for example, a server device equipped with a computer. For example, the device management device 30 includes, as functional components realized by the computer executing a program, a device information acquisition unit 31, a maintenance information reception unit 32, a maintenance timing calculation unit 33, a work information reception unit 34, a maintenance cost calculation unit 35, and a maintenance plan creation unit 36. The device management device 30 also includes a storage unit 300 that stores information acquired by each unit, information generated by each unit, and the like.

[0024] The equipment information acquisition unit 31 acquires equipment information including the model name and operation data of each of the multiple air conditioners 100 installed in the facility. The operation data includes the operation start date, operation time (the cumulative operation time from the start of operation to the present), etc.

[0025] Furthermore, the maintenance information receiving unit 32 receives input of a maintenance priority indicating the priority of performing maintenance on the air conditioner 100. The maintenance priority is determined by a user (for example, a facility manager) according to the degree of impact on opportunity loss that occurs when the air conditioner 100 breaks down. For example, even within the same facility, an air conditioner 100 installed in a server room has a high impact on opportunity loss that occurs when it breaks down, while an air conditioner 100 installed in a warehouse has a low impact on opportunity loss that occurs when it breaks down. In this case, the maintenance priority of the air conditioner 100 installed in the server room is set high, and the maintenance priority of the air conditioner 100 installed in the warehouse is set low.

[0026] The maintenance priority may be input from a controller (not shown) provided in the air conditioner 100, or may be input from a terminal device (e.g., a personal computer, smartphone, etc.) used by a user (e.g., a facility manager).

[0027] The maintenance timing calculation unit 33 calculates the maintenance timing based on the operation data of the air conditioner 100 acquired by the equipment information acquisition unit 31. Included Two or more maintenance periods are calculated based on the operating time. The maintenance periods are, for example, periods for replacing parts used in the air conditioner 100. The parts to be replaced are, for example, replaceable components of the air conditioner 100, such as the filter 29, the outdoor unit compressor 13, the outdoor unit fan motor 12, and the indoor unit fan motor 22.

[0028] For example, for each model of air conditioner 100, a standard operating time for performing maintenance (e.g., part replacement), an operating time for performing early maintenance with priority on maintenance, and an operating time for performing late maintenance with priority on cost are preset. These can be set, for example, based on the results of an analysis of the correlation between the past operating time of the same or similar model and the occurrence of part failures. The maintenance timing calculation unit 33 checks the current operating time of each air conditioner 100 based on operating data acquired from multiple air conditioners 100, and calculates three maintenance timings for each air conditioner 100: a standard maintenance timing (e.g., part replacement timing), an early maintenance timing with priority on maintenance (e.g., part replacement timing), and a late maintenance timing with priority on cost (e.g., part replacement timing). Specifically, the standard maintenance timing is a time when the probability of a part failure within the next year is estimated to be, for example, 50%, and the early maintenance timing with priority on maintenance is a time when the probability of a part failure within the next year is estimated to be, for example, 20%. The later maintenance period that prioritizes cost may be the period when the probability of a part breaking down within the next year is estimated to be, for example, 80%. The maintenance period may be, for example, the time to replace a part.

[0029] FIG. 4 is a diagram showing an example of the calculation results of the maintenance timing according to this embodiment. This diagram shows the calculation results of the maintenance timing for 16 air conditioners 100 installed in a facility. In this facility, a total of 16 air conditioners 100 are installed: four in the server room, two in reception room A, three in reception room B, three in the office, two in the conference room, and two in the warehouse. The air conditioners 100 are of different models and have different operating times to date. Therefore, the maintenance timing calculation unit 33 calculates the standard maintenance timing, early maintenance timing, and late maintenance timing for each air conditioner 100 based on the respective operating data. For example, in the illustrated example, the No. 5 air conditioner 100 installed in reception room A has been calculated to have an early maintenance timing of November to December 2022, a standard maintenance timing of January to February 2023, and a late maintenance timing of March to May 2023.

[0030] The maintenance timing calculation results shown in the figure also show the maintenance priority levels that have been input by the maintenance information receiving unit 32. In this example, the five air conditioners 100 installed in the server room have a high maintenance priority level ("high") because they would have a large impact on opportunity loss if they were to break down. The two air conditioners 100 installed in the conference room and the two air conditioners 100 installed in the warehouse have a low maintenance priority level ("low") because they would have a small impact on opportunity loss if they were to break down. The remaining air conditioners 100 installed in reception room A, reception room B, and the office are used more frequently by people than the conference room and warehouse, and so have a certain impact on opportunity loss if they break down, although not as much as in the server room, and so have a maintenance priority level that is set to "medium."

[0031] For example, if maintenance of all air conditioners 100 is performed in the first month of the standard maintenance period, the facility will be visited a total of six times, at least once each in January, February, April, May, June, and October in 2023. Since various expenses (overheads) such as travel costs are incurred for each visit, the more visits there are, the higher the cost required for maintenance, which is not desirable.

[0032] In this embodiment, three maintenance periods (early, standard, and late) are provided to provide a range of maintenance periods so that the maintenance schedule can be adjusted, thereby reducing the number of visits and suppressing maintenance costs. For example, if maintenance for all air conditioners 100 is performed on the same day, the number of visits is one, and maintenance can be performed at the lowest cost. However, if the number of visits is one, some air conditioners 100 will be maintained later than the standard maintenance period, increasing the risk of breakdown. In the unlikely event that a breakdown occurs, it will be acceptable as long as it is an air conditioner 100 that has a low impact on opportunity loss. However, if an air conditioner 100 that has a high impact on opportunity loss breaks down, the cost of opportunity loss will be high.

[0033] For example, in a server room where a server is installed, or in a store that cannot operate without air conditioning, where a breakdown of the air conditioner 100 would result in significant losses, maintenance to prevent breakdowns may be required even if it incurs costs. For such air conditioners 100, the risk of breakdown can be reduced by setting the maintenance priority high and scheduling maintenance to be performed at an early maintenance time or an early to standard maintenance time. On the other hand, if a breakdown of the air conditioner 100 would result in little loss, maintenance costs can be expected to be reduced by setting the maintenance priority low and scheduling maintenance to be performed at a later maintenance time or a standard to late maintenance time.

[0034] Therefore, the equipment management device 30 of this embodiment creates a maintenance plan that reduces maintenance costs and takes into account the cost of lost opportunities by consolidating the maintenance periods for each air conditioner 100 so as to reduce the number of visits according to the maintenance priority set for each air conditioner 100.

[0035] FIG. 5 is a diagram showing an example of a maintenance plan according to this embodiment. The maintenance plan shown in this figure is a plan created by optimizing the maintenance timing for each air conditioner 100 from the standard maintenance timing, early maintenance timing, and late maintenance timing shown in FIG. 4 according to maintenance priority. The optimized maintenance timing for each air conditioner 100 is indicated by a double circle. By setting early maintenance timing for air conditioners 100 with high maintenance priority and late maintenance timing for air conditioners 100 with low maintenance priority, the plans are summarized in August 2023. Furthermore, by setting the standard maintenance timing for air conditioners 100 with a maintenance priority set to "medium," the plans are summarized in February 2023.

[0036] According to this maintenance plan, the facility will only need to be visited a total of two times, at least once in February and once in August 2023, so maintenance can be carried out at a lower cost compared to six visits at the standard maintenance interval for all air conditioners 100. In addition, because the plan calls for air conditioners 100 with a high maintenance priority to be maintained at an earlier maintenance interval, the maintenance plan also takes into account the cost of lost opportunities.

[0037] Returning to FIG. 3, the functional configuration of the device management device 30 for creating a low-cost maintenance plan that takes into account the cost of opportunity loss from among standard maintenance timing, early maintenance timing, and late maintenance timing will be described.

[0038] The work information receiving unit 34 receives input of work information related to the work time (e.g., manpower) required for maintenance (e.g., replacing parts) of each air conditioner 100 and the costs required for maintenance (e.g., parts costs, miscellaneous expenses, etc.). Miscellaneous expenses include travel expenses (transportation costs, etc.) incurred by workers to travel to the location where maintenance is to be performed. Therefore, parts costs are not affected by the number of visits, but miscellaneous expenses increase the more visits there are.

[0039] The maintenance cost calculation unit 35 selects the maintenance timing setting for each of the multiple air conditioners 100 installed in the facility, and calculates the maintenance cost required for the selected maintenance timing setting based on the work time (e.g., man-hours) and costs required for maintenance (e.g., parts costs, miscellaneous expenses, etc.) input into the work information receiving unit 34.

[0040] For example, the maintenance cost calculation unit 35 selects multiple maintenance timing settings for each air conditioner 100 from among standard maintenance timing, early maintenance timing, and late maintenance timing according to the maintenance priority, and calculates the maintenance costs required for each of the selected multiple maintenance timing settings based on the work time (e.g., man-hours) and costs required for maintenance (e.g., parts costs, miscellaneous expenses, etc.) input into the work information receiving unit 34.

[0041] The maintenance plan creation unit 36 ​​creates and outputs a maintenance plan for the air conditioners 100 based on the maintenance time setting with the lowest calculated maintenance cost out of the multiple maintenance time settings selected by the maintenance cost calculation unit 35. That is, the maintenance plan creation unit 36 ​​creates and outputs a maintenance plan for each air conditioner 100 to be maintained in the facility based on the maintenance time calculated by the maintenance time calculation unit 33, the maintenance priority input to the maintenance information receiving unit 32, and the work time (e.g., manpower) and costs required for maintenance (e.g., parts costs, miscellaneous expenses, etc.) input to the work information receiving unit 34.

[0042] For example, the maintenance plan creation unit 36 ​​outputs maintenance plans for air conditioners 100 No. 1 to No. 16 shown in FIG. 5. The maintenance plan shown in FIG. 5 is an example, and any form can be used as long as the post-optimization maintenance period for each air conditioner 100 is known. For example, in the maintenance plan shown in FIG. 5, the post-optimization maintenance period is indicated by "◎", but it may also be expressed in text (for example, "February 2023"). Furthermore, the maintenance plan shown in FIG. 5 indicates the post-optimization maintenance period for each air conditioner 100 in a table format, but the post-optimization maintenance period may also be expressed in text or the like at the installation location of the air conditioner 100 on a drawing of the facility (floor plan, floor plan, etc.).

[0043] The storage unit 300 stores the device information, maintenance priority, work information, etc. acquired by the device management device 30. It also stores the maintenance timing calculated by the device management device 30, the maintenance plan created, etc.

[0044] (Maintenance plan creation process operation) Next, the operation of a maintenance plan creation process in which the equipment management device 30 creates and outputs a maintenance plan will be described with reference to Fig. 6. Fig. 6 is a flowchart showing an example of the maintenance plan creation process according to this embodiment.

[0045] (Step S101) The equipment management device 30 acquires equipment information including the model name and operating data (for example, operating time) of each of the multiple air conditioners 100 installed in the facility, and then proceeds to step S103.

[0046] (Step S103) The equipment management device 30 receives an input of a maintenance priority indicating the priority of carrying out maintenance for each of the multiple air conditioners 100 installed in the facility, and then proceeds to step S105.

[0047] (Step S105) The equipment management device 30 performs the following on the operating data of the air conditioner 100 acquired in step S101. IncludedThe maintenance timing (e.g., part replacement timing) is calculated based on the operating time. For example, the equipment management device 30 calculates a standard maintenance timing, an earlier maintenance timing that prioritizes maintenance, and a later maintenance timing that prioritizes cost for each air conditioner 100 (see FIG. 4). Then, the process proceeds to step S107.

[0048] (Step S107) The equipment management device 30 accepts input of work information related to the work time (e.g., manpower) required for maintenance (e.g., part replacement) of each air conditioner 100 and the costs required for maintenance (e.g., parts costs, overhead, etc.). Then, the process proceeds to step S109.

[0049] (Step S109) The equipment management device 30 calculates, as the reference cost, the maintenance cost for when all maintenance of each air conditioner 100 that is the maintenance target in the facility is performed at the standard maintenance time, and then proceeds to step S111.

[0050] (Step S111) The equipment management device 30 calculates, as a provisional cost, the maintenance cost when the maintenance timing of each air conditioner 100 to be maintained in the facility is selected at random while satisfying the respective maintenance priorities. Then, the process proceeds to step S113.

[0051] (Step S113) The equipment management device 30 determines whether the provisional cost calculated in step S111 is lower than the standard cost calculated in step S109. If the equipment management device 30 determines that the provisional cost is lower than the standard cost (YES), the device management device 30 proceeds to step S119. On the other hand, if the equipment management device 30 determines that the provisional cost is not lower than the standard cost (NO), the device management device 30 skips the process of step S119 and proceeds to step S121.

[0052] (Step S119) The equipment management device 30 replaces the standard cost with the provisional cost. That is, the equipment management device 30 performs the subsequent processes using the provisional cost calculated in step S111 as the standard cost. Then, the process proceeds to step S121.

[0053] (Step S121) The device management device 30 determines whether or not a NO determination (determination that the provisional cost is not cheaper than the standard cost) has occurred N or more times in step S113. Here, N is an integer greater than or equal to 1000, for example, and is set to 10,000. If a NO determination (determination that the provisional cost is not cheaper than the standard cost) has occurred N or more times in a row, it can be determined that a sufficiently low-cost maintenance timing has been selected. If the device management device 30 determines that a NO determination has occurred N or more times in a row in step S113 (YES), it proceeds to step S123. On the other hand, if the device management device 30 determines that a NO determination has not occurred N or more times in a row in step S113 (NO), it returns to step S111 because there is a possibility of selecting an even lower-cost maintenance timing.

[0054] (Step S123) The equipment management device 30 creates and outputs a maintenance plan for the air conditioners 100 based on the maintenance time setting with the lowest calculated maintenance cost among the maintenance time settings for each air conditioner 100 selected in step S111 (see FIG. 5). That is, the equipment management device 30 creates and outputs a maintenance plan for each air conditioner 100 to be maintained in the facility based on the maintenance time calculated in step S105, the maintenance priority input in step S103, and the work time (e.g., manpower) and costs required for maintenance (e.g., parts costs, miscellaneous expenses, etc.) input in step S107.

[0055] As explained above, in the equipment management system 1 according to this embodiment, the equipment management device 30 comprises an equipment information acquisition unit 31, a maintenance information reception unit 32, a maintenance timing calculation unit 33, a work information reception unit 34, and a maintenance plan creation unit 36. The equipment management device 30 acquires equipment information including the model name and operating data of each of the multiple air conditioners 100 (an example of equipment) installed in the facility. The maintenance information reception unit 32 accepts input of a maintenance priority indicating the priority of performing maintenance on the air conditioners 100. The maintenance timing calculation unit 33 calculates two or more maintenance timings. For example, the maintenance timing calculation unit 33 calculates the maintenance timing based on the operating data acquired by the equipment information acquisition unit 31. IncludedBased on the operating time, three maintenance periods (an example of two or more maintenance periods) are calculated, including an early maintenance period (an example of a first maintenance period) for early replacement of parts used in the air conditioner 100, a standard maintenance period (an example of a second maintenance period) that is later than the early maintenance period, and a late maintenance period (an example of the second maintenance period). The work information receiving unit 34 receives input of work information related to the work time (e.g., manpower) and costs (e.g., parts costs, miscellaneous expenses, etc.) required to replace each part of the air conditioner 100. The maintenance plan creation unit 36 ​​creates and outputs a maintenance plan for the air conditioner 100 based on the maintenance period calculated by the maintenance period calculation unit 33, the maintenance priority input to the maintenance information receiving unit 32, and the work time and costs input to the work information receiving unit 34.

[0056] As a result, the equipment management system 1 creates a maintenance plan for the air conditioner 100 based on multiple maintenance periods (part replacement periods) based on the operating time of the air conditioner 100, the maintenance priority, and the work time and costs required for maintenance (part replacement), and can therefore propose a maintenance plan for the air conditioner 100 that reduces maintenance costs and also takes into account the cost of opportunity loss.

[0057] The maintenance timing calculation unit 33 calculates the maintenance timing based on the operation data acquired by the equipment information acquisition unit 31. Included Based on the operation time, an early maintenance time (an example of a first maintenance time) for replacing parts used in the air conditioner 100 early, and a standard maintenance time (an example of a second maintenance time) that is later than the early maintenance time, may be calculated. Included Based on the operation time, an early maintenance time (an example of a first maintenance time) for replacing parts used in the air conditioner 100 early, and a late maintenance time (an example of a second maintenance time) that is later than the early maintenance time, may be calculated. IncludedBased on the operating time, a standard maintenance time (an example of a first maintenance time) for early replacement of parts used in the air conditioner 100 and a later maintenance time (an example of a second maintenance time) that is later than the standard maintenance time may be calculated. Furthermore, the maintenance time calculation unit 33 may calculate four or more maintenance times.

[0058] The equipment management device 30 also includes a maintenance cost calculation unit 35. The maintenance cost calculation unit 35 selects multiple maintenance time settings for each of the air conditioners 100 from the two or more maintenance time settings calculated by the maintenance time calculation unit 33 in accordance with the maintenance priority input to the maintenance information reception unit 32, and calculates the maintenance costs required for each of the selected multiple maintenance time settings based on the work time and costs input to the work information reception unit 34. The maintenance plan creation unit 36 ​​then creates a maintenance plan for the air conditioner 100 based on the maintenance time setting with the lowest calculated maintenance cost among the multiple maintenance time settings selected by the maintenance cost calculation unit 35.

[0059] As a result, the equipment management system 1 creates a maintenance plan for the air conditioner 100 based on the maintenance timing setting that results in the lowest maintenance costs, selected in accordance with maintenance priority from among multiple maintenance timings (parts replacement timings) based on the operating time of the air conditioner 100, and is therefore able to propose a maintenance plan for the air conditioner 100 that reduces maintenance costs and also takes into account the cost of opportunity loss.

[0060] The maintenance timing may be, for example, the timing for inspecting the air conditioner 100, and the maintenance timing calculation unit 33 may calculate the inspection timing as the maintenance timing. Here, inspections include inspections required by law (such as simple inspections at least once every three months, regular inspections at least once a year, or at least once every three years). As defined by "above," there is no problem with inspecting earlier (i.e., increasing the inspection frequency). However, inspecting later (i.e., decreasing the inspection frequency) is a violation of the law. Therefore, the maintenance timing calculation unit 33 calculates an earlier maintenance timing and a standard maintenance timing for the inspection timing. That is, the maintenance plan creation unit 36 ​​may create a maintenance plan for the part replacement timing from earlier, standard, and later maintenance timings, but creates a maintenance plan for the inspection timing from earlier and standard maintenance timings.

[0061] For example, a standard operating time for which inspection should be performed and an operating time for which inspection should be performed earlier to prioritize maintenance are set in advance for each model of air conditioner 100. The maintenance timing calculation unit 33 may check the current operating time of each air conditioner 100 based on operating data acquired from multiple air conditioners 100, and calculate a standard maintenance timing (inspection timing) and an earlier maintenance timing (inspection timing) that prioritizes maintenance for each air conditioner 100. When maintenance is performed at the standard maintenance timing (inspection timing), it can be performed at a lower cost than when maintenance is performed at an earlier maintenance timing (inspection timing).

[0062] The maintenance information receiving unit 32 may also acquire inspection information related to the inspection of the air conditioner 100. For example, the inspection information includes, for each model name of the air conditioner 100, the standard operating time during which inspection should be performed and the operating time during which inspection should be performed early to prioritize maintenance. The maintenance timing calculation unit 33 may calculate the maintenance timing (inspection timing) of the air conditioner 100 based on the device information acquired from multiple air conditioners 100 and the inspection information input to the maintenance information receiving unit 32.

[0063] As a result, the device management system 1 can create a maintenance plan for the air conditioners 100 that suppresses maintenance costs and takes into account the cost of lost opportunities, as a maintenance plan that also includes inspection of the air conditioners 100.

[0064] The maintenance plan creation unit 36 ​​may create a maintenance plan from among early, standard, and late maintenance periods for inspections other than those required by law.

[0065] The equipment management method in the equipment management system 1 according to this embodiment includes a step in which an equipment information acquisition unit 31 acquires equipment information including the model name and operating data of each of a plurality of air conditioners 100 (an example of equipment) installed in the facility, a step in which a maintenance information reception unit 32 receives input of a maintenance priority indicating the priority of performing maintenance on the air conditioners 100, and a step in which a maintenance timing calculation unit 33 calculates a maintenance timing based on the operating data acquired by the equipment information acquisition unit 31. Included The method includes the steps of: calculating three maintenance periods (an example of two or more maintenance periods) based on the operating time, including an early maintenance period (an example of a first maintenance period) for early replacement of parts used in the air conditioner 100; a standard maintenance period (an example of a second maintenance period) that is later than the early maintenance period; and a late maintenance period (an example of the second maintenance period); a work information receiving unit 34 receiving input of work information related to the work time (e.g., manpower) and costs (e.g., parts costs, miscellaneous expenses, etc.) required to replace each part of the air conditioner 100; and a maintenance plan creation unit 36 ​​creating and outputting a maintenance plan for the air conditioner 100 based on the maintenance period calculated by the maintenance period calculation unit 33, the maintenance priority input to the maintenance information receiving unit 32, and the work time and costs input to the work information receiving unit 34.

[0066] As a result, the equipment management method in the equipment management system 1 creates a maintenance plan for the air conditioner 100 based on multiple maintenance periods (part replacement periods) based on the operating time of the air conditioner 100, the maintenance priority, and the work time and cost required for maintenance (part replacement), making it possible to propose a maintenance plan for the air conditioner 100 that reduces maintenance costs and also takes into account the cost of opportunity loss.

[0067] The program according to this embodiment includes the steps of: acquiring equipment information including the model name and operating data of each of a plurality of air conditioners 100 (an example of equipment) installed in a facility; receiving an input of a maintenance priority indicating the priority of performing maintenance on the air conditioners 100; and, based on the acquired operating data, Included The system executes the following steps: calculating three maintenance periods (examples of two or more maintenance periods) based on the operating time, including an early maintenance period (an example of a first maintenance period) for early replacement of parts used in the air conditioner 100, a standard maintenance period (an example of a second maintenance period) that is later than the early maintenance period, and a late maintenance period (an example of the second maintenance period); accepting input of work information regarding the work time (e.g., manpower) and costs (e.g., parts costs, miscellaneous expenses, etc.) required to replace each part of the air conditioner 100; and creating and outputting a maintenance plan for the air conditioner 100 based on the calculated maintenance period, the input maintenance priority, and the input work time and costs.

[0068] As a result, by executing the above program, the computer serving as the equipment management device 30 in the equipment management system 1 creates a maintenance plan for the air conditioner 100 based on multiple maintenance periods (parts replacement periods) based on the operating time of the air conditioner 100, the maintenance priority, and the work time and costs required for maintenance (parts replacement), making it possible to propose a maintenance plan for the air conditioner 100 that reduces maintenance costs and also takes into account the cost of opportunity loss.

[0069] <Second embodiment> Next, a second embodiment will be described. In the first embodiment, in order to create a maintenance plan with the cheapest maintenance timing, the process of randomly selecting a maintenance timing for each air conditioner 100 and calculating the maintenance cost (provisional cost) (step S111 in FIG. 6) was explained. In this embodiment, the equipment management device 30 calculates the work time required to perform maintenance on each air conditioner 100 using the selected maintenance timing setting, and checks whether the maintenance timing setting satisfies pre-specified work constraints (such as the number of workers and number of work days).

[0070] Fig. 7 is a schematic block diagram showing an example of the configuration of a device management device 30A according to this embodiment. In this figure, the same reference numerals are used to designate components corresponding to those of the device management device 30 shown in Fig. 3. The device management device 30A differs from the device management device 30 shown in Fig. 3 in that it further includes an operation time calculation unit 37.

[0071] The work time calculation unit 37 calculates the work time required for performing maintenance for each of the multiple maintenance time settings selected by the maintenance cost calculation unit 35. Then, the maintenance plan creation unit 36 ​​determines whether or not any of the selected multiple maintenance time settings satisfies pre-specified work constraints (number of workers, number of work days, etc.), and creates a maintenance plan based on the maintenance time setting with the lowest calculated maintenance cost among those that satisfy the pre-specified work constraints (number of workers, number of work days, etc.).

[0072] That is, in this embodiment, the maintenance plan creation unit 36 ​​creates a maintenance plan for the air conditioner 100 based on the maintenance time setting that satisfies the pre-specified work constraints (number of people, number of days, etc.) and has the lowest calculated maintenance cost out of the multiple selected maintenance time settings.

[0073] Fig. 8 is a flowchart showing an example of a maintenance plan creation process according to this embodiment. In this figure, processes corresponding to those shown in Fig. 6 are given the same reference numerals. The maintenance plan creation process shown in this figure differs from the maintenance plan creation process shown in Fig. 6 in that it further performs the processes of steps S115 and S117. Here, the differences from the maintenance plan creation process shown in Fig. 6 will be described.

[0074] If it is determined in step S113 that the provisional cost is lower than the reference cost (YES), the equipment management device 30A proceeds to step S115.

[0075] (Step S115) The equipment management device 30A calculates the work time required to perform maintenance using the maintenance timing settings selected when the provisional costs were calculated in step S111. For example, the equipment management device 30A calculates the work time required to perform maintenance using the maintenance timing settings selected when the provisional costs were calculated, based on the maintenance timing settings selected when the provisional costs were calculated and the work time input to the work information receiving unit 34. Then, the process proceeds to step S117.

[0076] (Step S117) The equipment management device 30A determines whether the maintenance timing setting selected when calculating the provisional cost can be handled with the specified number of people and number of days. For example, the equipment management device 30A determines whether the work time calculated in step S115 satisfies pre-specified work constraints (number of people, number of days, etc.). If the equipment management device 30A determines that the pre-specified work constraints (number of people, number of days, etc.) are met (YES), it determines that the work can be handled with the specified number of people and number of days, and proceeds to step S121. On the other hand, if the equipment management device 30A determines that the pre-specified work constraints (number of people, number of days, etc.) are not met (NO), it determines that the work cannot be handled with the specified number of people and number of days, and returns to step S111.

[0077] As described above, the equipment management device 30A according to this embodiment includes a work time calculation unit 37 that calculates the work time required for performing maintenance for each of the multiple maintenance timing settings selected by the maintenance cost calculation unit 35. The maintenance plan creation unit 36 ​​then creates a maintenance plan for the air conditioner 100 based on the maintenance timing setting that satisfies the pre-specified work conditions (number of people, number of days) and has the lowest calculated maintenance cost among the multiple selected maintenance timing settings.

[0078] As a result, when there are constraints such as the number of workers or number of work days designated in advance, the device management system 1 can avoid creating a maintenance plan that cannot be carried out under those constraints.

[0079] The time required to perform maintenance (e.g., part replacement) varies depending on the work content and the ability (e.g., proficiency) of the worker. Maintenance work also includes waiting times, such as vacuuming and waiting for test runs to stabilize. To create a maintenance plan that takes such content into consideration, it is possible to set work conditions such as standard work time, standard waiting time, and the ability (e.g., proficiency) of the worker.

[0080] 9 is a diagram showing an example of setting work conditions according to this embodiment. In the example shown, work content, the standard work time required for that work content (standard work time), and the waiting time within the standard work time (standard waiting time) are associated with each other.

[0081] For example, replacing outdoor unit No. 10 requires two days for the standard work time, assuming a maximum daily work time of eight hours and one worker. In this case, two days provides 16 hours of work time. Therefore, the maintenance plan creation unit 36 ​​can create a maintenance plan by considering that the four hours remaining (16 hours (two days) minus 14 hours (standard work time)), plus the two hours of standard standby time, can be used for other work, such as inspection work, during this four-hour period.

[0082] Furthermore, each task is associated with a category according to the worker's ability (for example, proficiency). In the example shown, workers are divided into three categories, worker category A, worker category B, and worker category C, according to their ability (for example, proficiency), and the required work time for each category of worker is shown as a multiplier against the standard work time.

[0083] Here, worker category A is for workers with high proficiency, worker category B is for workers with standard proficiency, and worker category C is for workers with low proficiency who are not used to the work. The work time for workers in each category can be calculated by multiplying the standard work time by the magnification of each category. As an example, the standard work time for replacing compressor No. 4 is 6 hours, but for workers in worker category A it takes 4.8 hours (6 x 0.8 = 4.8) and for workers in worker category B it takes 6 hours (6 x 1 =6 ), and for a worker in worker category C, it is 9 hours (6 x 1.5 = 9).

[0084] For example, the work information receiving unit 34 receives input of worker information (see FIG. 9) relating to standard work time, standard standby time, and work classification indicating the worker's ability for the work (e.g., proficiency level) as work information. For example, the construction company performing the work can freely input the multiplier for the worker classification. Then, the work time calculation unit 37 calculates the work time required to perform maintenance at each of multiple maintenance timing settings based on the worker's ability for the work (e.g., proficiency level). When creating a maintenance plan for the air conditioner 100, the maintenance plan creation unit 36 ​​creates the plan based on the work time calculated by the work time calculation unit 37.

[0085] This allows the device management system 1 to take into account the capabilities (eg, proficiency) of the workers and perform more accurate estimates of work time and costs.

[0086] <Third embodiment> Next, a third embodiment will be described. In this embodiment, an example configuration will be described in which a maintenance plan is created regarding the timing of cleaning or replacing a filter 29 of an air conditioner 100. As described in the first embodiment with reference to Fig. 2, the indoor unit 20 of the air conditioner 100 includes an indoor unit fan 21 (an example of a fan), an indoor unit fan motor 22 (an example of a fan motor) that drives the rotation of the indoor unit fan 21, an indoor unit control unit 28 (an example of a control unit) that controls the indoor unit fan motor 22, and a filter 29 (an example of a filter) provided midway through the flow of air generated by the rotation of the indoor unit fan 21.

[0087] Here, it is recommended that normal filters be cleaned about once a year, but even if the cleaning schedule is slightly off, it only slightly affects the capacity and power consumption and does not cause any major problems. Furthermore, since it only slightly affects the capacity and power consumption, the filter cleaning schedule may be freely set by the user. Furthermore, the filter cleaning schedule may be automatically set depending on the type of filter.

[0088] In addition, the pressure loss (clogging) state of the filter may be detected from the rotation speed of the fan motor, and the recommended cleaning time may be set according to the clogging state. For example, an earlier cleaning time may be set when cleaning is recommended at 50% clogging, a standard cleaning time may be set when cleaning is recommended at 70% clogging, and a later cleaning time may be set when cleaning is recommended at 80% clogging.

[0089] For example, the device information acquisition unit 31 further acquires fan motor control information from the air conditioner 100 (e.g., the indoor unit control unit 28). The fan motor control information is, for example, information such as the rotation speed of the indoor unit fan motor 22. The maintenance timing calculation unit 33 calculates the pressure loss of the filter 29 based on the device information including the fan motor control information acquired by the device information acquisition unit 31, and calculates the time to clean or replace the filter 29 as the maintenance timing based on the calculated pressure loss of the filter 29.

[0090] As a result, the equipment management system 1 can calculate an earlier cleaning or replacement timing for the filter 29 that prioritizes maintenance, a later cleaning or replacement timing for the filter 29 that prioritizes cost, or a standard cleaning or replacement timing for the filter 29 based on the pressure loss of the filter 29 calculated from the operating time of the air conditioner 100 or fan motor control information, and create a maintenance plan that takes into account the maintenance timing of the filter 29. Thus, the equipment management system 1 can create a maintenance plan that includes maintenance of the filter 29.

[0091] <Fourth embodiment> Next, a fourth embodiment will be described. In this embodiment, a configuration example in which the maintenance content is repair will be described. Fig. 10 is a schematic block diagram showing an example of the configuration of a device management device 30B according to this embodiment. In this figure, the same reference numerals are used to designate components corresponding to those of the device management devices 30 and 30A shown in Figs. 3 and 7. The device management device 30B differs from the device management device 30A shown in Fig. 7 in that it further includes a fault diagnosis unit 38.

[0092] The device information acquisition unit 31 further acquires abnormality information related to abnormalities in each of the multiple air conditioners 100. The abnormality information is information related to failure prediction, such as error information, power consumption, failure diagnosis results, and refrigerant leakage diagnosis results.

[0093] The fault diagnosis unit 38 predicts when the air conditioner 100 will fail based on the operating data and abnormality information acquired by the equipment information acquisition unit 31. For example, the fault diagnosis unit 38 predicts when a component of the air conditioner 100 will fail based on the operating data and abnormality information acquired by the equipment information acquisition unit 31. The maintenance timing calculation unit 33 calculates the repair timing as the maintenance timing based on the failure timing of the air conditioner 100 predicted by the fault diagnosis unit 38.

[0094] When predicting the time of failure, the failure diagnosis unit 38 diagnoses which parts are likely to fail and when. However, predictions cannot be made with 100% accuracy, and predictions are made with probabilities such as a 60% probability of failure in x years, or a 90% probability of failure in x years. Therefore, the repair schedule varies depending on when repairs are recommended. For example, if repairs are recommended when there is a 60% probability of failure, the repairs are early; if repairs are recommended when there is a 70% probability of failure, the repairs are standard; and if repairs are recommended when there is a 95% probability of failure, the repairs are late.

[0095] In terms of cost, it is more advantageous to repair after a breakdown, so if a breakdown will not cause any major problems, the repair time may be set far into the future.

[0096] This allows the equipment management system 1 to predict when a failure will occur based on the operating data and abnormality information acquired from the air conditioner 100, and create a maintenance plan that includes the timing of repairs based on the time when the failure is predicted, thereby preventing failures from occurring.

[0097] <Fifth embodiment> Next, a fifth embodiment will be described. In this embodiment, a configuration example will be described in which the maintenance content is equipment update. Updates are performed when repairs are not possible or when updating to a new product is cheaper than repairs, but as with repairs, there is a range of update schedules depending on when the update is recommended.

[0098] Fig. 11 is a schematic block diagram showing an example of the configuration of a device management device 30C according to this embodiment. In this figure, the same reference numerals are used to designate components corresponding to the components of the device management devices 30, 30A, and 30B shown in Figs. 3, 7, and 10. The device management device 30C differs from the device management device 30B shown in Fig. 10 in that it further includes an update time calculation unit 39.

[0099] The update time calculation unit 39 calculates the time for updating the operating data acquired by the device information acquisition unit 31. Included Based on the operating time, the renewal timing for replacing the equipment (for example, either or both of the outdoor unit 10 and the indoor unit 20) included in the air conditioner 100 is calculated. The maintenance plan creation unit 36 ​​creates a maintenance plan for the air conditioner 100 that includes the renewal timing calculated by the renewal timing calculation unit 39.

[0100] This allows the device management system 1 to create a maintenance plan that includes the timing of updating the device. The device management system 1 can also compare the costs of updating the device with those of not updating it (for example, repairing it), and confirm the amount of cost reduction.

[0101] As explained in the fourth embodiment, the equipment information acquisition unit 31 further acquires abnormality information relating to abnormalities in each of the multiple air conditioners 100. The failure diagnosis unit 38 predicts when an air conditioner 100 will fail based on the operating data and abnormality information acquired by the equipment information acquisition unit 31. The update time calculation unit 39 then calculates the time when an air conditioner 100 will fail based on the operating data acquired by the equipment information acquisition unit 31. Included The timing for updating the equipment of the air conditioner 100 (for example, either one or both of the outdoor unit 10 and the indoor unit 20) may be calculated based on the operating time and abnormality information, and the timing of the air conditioner 100 failure predicted by the failure diagnosis unit 38.

[0102] This allows the device management system 1 to create a maintenance plan that includes more accurate update timing, taking into account abnormality information, predictions of when a failure will occur, and the like.

[0103] Although the embodiments have been described above in detail with reference to the drawings, the specific configurations are not limited to these embodiments, and the embodiments can be modified or omitted as appropriate.

[0104] In the above embodiment, the case where the equipment installed in the facility is an air conditioner 100 is described, but this is not limited to the air conditioner 100, and the method for creating a maintenance plan described in the above embodiment may be applied to creating a maintenance plan for any equipment.

[0105] Furthermore, the equipment management device 30 may create a maintenance plan linked to the delivery date of a repair part. For example, if the delivery date of a part is six months, the equipment management device 30 may create a maintenance plan so that maintenance will be performed six months from the present time.

[0106] Furthermore, when creating a maintenance plan, the equipment management device 30 may try all possible combinations of dates in a brute force manner, or may use an algorithm that reduces the amount of calculation, such as a genetic algorithm or AI (Artificial Intelligence).

[0107] Furthermore, in the above embodiment, an example of a configuration was described in which the equipment management device 30 acquires equipment information such as operating data via the communication network NW (for example, in real time), but even if there is no network environment, the equipment management device 30 may acquire the equipment information by uploading it to the cloud after acquiring the equipment information on-site during inspection, etc.

[0108] It is also possible to record a program for realizing the functions of the device management device 30 on a computer-readable recording medium, and have a computer system load and execute the program to perform processing of the control unit of each device. Note that the term "computer system" here includes hardware such as the OS and peripheral devices.

[0109] Furthermore, the term "computer-readable recording medium" refers to portable media such as flexible disks, optical magnetic disks, ROMs, and CD-ROMs, as well as storage devices such as hard disks built into computer systems. Furthermore, the term "computer-readable recording medium" also includes devices that dynamically store programs for a short period of time, such as communication lines used when transmitting programs over networks like the Internet or communication lines like telephone lines, and devices that store programs for a fixed period of time, such as volatile memory within the computer systems that serve as servers or clients. The program may be a program that implements part of the aforementioned functions, or may be a program that can implement the aforementioned functions in combination with a program already stored in the computer system. The program may also be stored on a designated server and distributed (e.g., downloaded) over communication lines in response to requests from other devices.

[0110] Furthermore, some or all of the functions of the device management device 30 may be implemented as an integrated circuit such as an LSI (Large Scale Integration). Each function may be implemented as a separate processor, or some or all of the functions may be integrated into a processor. The integrated circuit implementation method is not limited to LSI, and may be implemented using a dedicated circuit or a general-purpose processor. Furthermore, if an integrated circuit implementation technology that can replace LSI emerges due to advances in semiconductor technology, an integrated circuit based on that technology may be used. [Explanation of symbols]

[0111] 1. Equipment management system 10 Outdoor unit 11 Outdoor unit fan 12 Outdoor unit fan motor 13 Outdoor unit compressor 14 Outdoor unit heat exchanger 15 Four-way valve 16 Expansion valve 18 Outdoor unit control unit 20 Indoor unit 21 Indoor unit fan 22 Indoor unit fan motor 24 Indoor unit heat exchanger 28 Indoor unit control unit 29 filters 30 Equipment management device 31 Device information acquisition section 32 Maintenance Information Reception Department 33 Maintenance period calculation section 34 Work Information Reception Department 35 Maintenance Cost Calculation Department 36 Maintenance Planning Department 37 Work time calculation section 38 Fault diagnosis section 39 Update timing calculation section 100 Air conditioner 150 adapter 300 Storage section

Claims

1. a device information acquisition unit that acquires device information including model names and operation data of each of a plurality of devices installed in the facility; a maintenance information receiving unit that receives an input of a maintenance priority indicating a priority of performing maintenance on the device; a maintenance timing calculation unit that calculates two or more maintenance timings including a first maintenance timing for performing an early replacement of a part used in the device and a second maintenance timing that is later than the first maintenance timing, based on an operating time included in the operating data acquired by the device information acquisition unit; a work information receiving unit that receives input of work information related to work time and costs required for replacing the parts of each of the devices; a maintenance plan creation unit that creates and outputs a maintenance plan for the equipment based on the maintenance time calculated by the maintenance time calculation unit, the maintenance priority input to the maintenance information reception unit, and the work time and cost input to the work information reception unit; An equipment management system comprising:

2. a maintenance cost calculation unit that selects a plurality of maintenance time settings for each of the devices from the two or more maintenance times calculated by the maintenance time calculation unit in accordance with the maintenance priority input to the maintenance information reception unit, and calculates the maintenance costs required for each of the selected plurality of maintenance time settings based on the work time and the costs input to the work information reception unit, The maintenance plan creation unit creating a maintenance plan for the device based on the maintenance time setting with the lowest maintenance cost calculated from the plurality of maintenance time settings selected by the maintenance cost calculation unit; The device management system according to claim 1 .

3. a work time calculation unit that calculates work time when maintenance is performed at each of the plurality of maintenance timing settings selected by the maintenance cost calculation unit; Equipped with The maintenance plan creation unit creating a maintenance plan for the equipment based on the maintenance time setting that satisfies the pre-specified work constraints and has the lowest calculated maintenance cost among the selected plurality of maintenance time settings; The device management system according to claim 2 .

4. The work information receiving unit further receiving input of worker information indicating the worker's ability for the work as the work information; a work time calculation unit that calculates work time when maintenance is performed at each of the plurality of maintenance timing settings selected by the maintenance cost calculation unit, based on worker information indicating the worker's ability to perform the work; Equipped with The maintenance plan creation unit When creating a maintenance plan for the device, the plan is created based on the work time calculated by the work time calculation unit. The device management system according to claim 2 .

5. The maintenance information receiving unit Further accepting input of inspection information regarding inspection of the device; The maintenance timing calculation unit calculating an inspection time of the device as the maintenance time based on the device information acquired by the device information acquisition unit and the inspection information input to the maintenance information reception unit; The device management system according to claim 1 .

6. The device comprises: a fan; a fan motor that drives the rotation of the fan; a control unit that controls the fan motor; and a filter that is provided midway along the flow of air generated by the rotation of the fan, The device information acquisition unit acquiring fan motor control information from the device as the device information; The maintenance timing calculation unit calculating a pressure loss of the filter based on the device information including the fan motor control information acquired by the device information acquisition unit, and calculating a time to clean or replace the filter as the maintenance time based on the calculated pressure loss of the filter; The device management system according to claim 1 .

7. The device information acquisition unit Further, abnormality information relating to the abnormality of each of the plurality of devices is acquired; a failure diagnosis unit that predicts when the equipment will fail based on the operation data and the abnormality information acquired by the equipment information acquisition unit, The maintenance timing calculation unit calculating a repair time as the maintenance time based on the failure time of the device predicted by the failure diagnosis unit; The device management system according to claim 1 .

8. an update time calculation unit that calculates an update time for replacing the device based on an operating time included in the operating data acquired by the device information acquisition unit; The maintenance plan creation unit When creating the maintenance plan, the maintenance plan is created taking into consideration the renewal time calculated by the renewal time calculation unit. The device management system according to claim 1 .

9. The device information acquisition unit Further, abnormality information relating to the abnormality of each of the plurality of devices is acquired; a failure diagnosis unit that predicts when the equipment will fail based on the operation data and the abnormality information acquired by the equipment information acquisition unit, The update time calculation unit calculating the update time based on the operation time and abnormality information included in the operation data acquired by the equipment information acquisition unit and the failure time of the equipment predicted by the failure diagnosis unit; The device management system according to claim 8 .

10. a device information acquisition unit that acquires device information including model names and operation data of each of a plurality of devices installed in the facility; a maintenance information receiving unit that receives an input of a maintenance priority indicating a priority of performing maintenance on the device; a maintenance timing calculation unit that calculates two or more maintenance timings including a first maintenance timing for performing an early replacement of a part used in the device and a second maintenance timing that is later than the first maintenance timing, based on an operating time included in the operating data acquired by the device information acquisition unit; a work information receiving unit that receives input of work information related to work time and costs required for replacing the parts of each of the devices; a maintenance plan creation unit that creates and outputs a maintenance plan for the equipment based on the maintenance time calculated by the maintenance time calculation unit, the maintenance priority input to the maintenance information reception unit, and the work time and cost input to the work information reception unit; A device management device comprising:

11. A device management method in a device management system, comprising: a step in which an equipment information acquisition unit acquires equipment information including model names and operation data of each of a plurality of equipment installed in the facility; a step in which a maintenance information receiving unit receives an input of a maintenance priority indicating a priority for performing maintenance on the device; a maintenance timing calculation unit calculating, based on an operating time included in the operating data acquired by the equipment information acquisition unit, two or more maintenance timings including a first maintenance timing for performing an early replacement of a part used in the equipment and a second maintenance timing that is later than the first maintenance timing; a step in which a work information receiving unit receives input of work information related to work time and costs required to replace the parts of each of the devices; a step in which a maintenance plan creation unit creates and outputs a maintenance plan for the equipment based on the maintenance time calculated by the maintenance time calculation unit, the maintenance priority input to the maintenance information reception unit, and the work time and cost input to the work information reception unit; A device management method including:

12. On the computer, acquiring device information including model names and operation data of each of a plurality of devices installed in the facility; receiving an input of a maintenance priority indicating a priority of performing maintenance on the device; calculating two or more maintenance periods including a first maintenance period for replacing a part used in the equipment earlier and a second maintenance period later than the first maintenance period based on the operating time included in the operating data; receiving input of work information relating to work time and costs required to replace the parts of each of the devices; creating and outputting a maintenance plan for the equipment based on the calculated maintenance time, the input maintenance priority, and the input work time and cost; A program to execute.

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