JP2003185232A - System and method of controlling heat source machine for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control system and a control method capable of accurately estimating a maintenance time before the deterioration of performance and abnormality of a heat source machine for an air conditioner occurr. <P>SOLUTION: A heat source device control method or a maintenance service are provided to monitor the operating condition of the heat source machine 101 for an air conditioner with a central monitor device 10 connected through an information communication network and to diagnose progress of the deterioration of performance and degree of abnormality by analyzing the operation data of the heat source machine 101 and to reduce a loss of a user 100 due to the deterioration of performance and a stop of the heat source machine 101 by a failure. Furthermore, a remote concentrated control method is provided to grasp a load to be applied to the heat source machine 101 with the central monitor device 10 and to restrict the operation cost to the minimum. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a management device and a management method for a heat source device for an air conditioner.

[0002]

2. Description of the Related Art As a remote centralized control method for a heat source unit for an air conditioner, for example, the invention described in JP-A-9-26237 is known. This invention installs a terminal device in an absorption chiller-heater and uses a signal indicating the physical quantity and operating state of each part of the absorption chiller-heater to determine an abnormality in an arithmetic control unit provided in the terminal and When it is determined that the signal stored in the terminal device to the central monitoring device,
This is a method of performing more detailed analysis in an analysis computer provided in the central monitoring device, and at the same time turning on a display or a warning light on a monitor unit provided in the central monitoring device.

Further, Japanese Patent Laid-Open Publication No. 7-151416 discloses an invention which allows an absorption type chiller / heater to accurately determine only cooling water stains that may last for a long time. . FIG. 6 is a diagram showing a configuration of a general double-effect absorption refrigerating machine using an absorption refrigerating machine as a heat source machine for an air conditioner which has been conventionally practiced disclosed in this publication. . In the figure, an upper cylinder 601 including a condenser 611 and a low temperature regenerator 612, a lower cylinder 602 including an evaporator 621 and an absorber 622, a high temperature regenerator 603 having a burner 631 built therein, and a high temperature heat exchanger 60.
4. The low temperature heat exchanger 605 and the like are connected to each other by piping.

[0004]

[Patent Document 1] Japanese Unexamined Patent Publication No. 9-26237

[0005]

[Patent Document 2] JP-A-7-151416

[0006]

In the absorption chiller, the cooling water circulates between it and the outdoor cooling tower, so that dust and the like in the outside air are absorbed by the cooling water in the process. When the cooling water in which the dusts are absorbed passes through the heat exchange unit such as the absorber or the condenser, the heat transfer surface becomes dirty and the heat exchange rate is reduced. When the cooling water system of the absorption chiller becomes dirty, the efficiency of the chiller decreases in proportion to the degree of the dirt. When this symptom progresses, a serious failure such as abnormality of the high temperature regenerator or crystallization of the absorbing liquid may occur, and when such a failure occurs, the operation cannot be continued.

Therefore, in the invention disclosed in the above-mentioned Japanese Patent Laid-Open Publication No. 7-151416, a sensor detects the temperature at a plurality of locations affected by dirt on the heat transfer surface of the cooling water pipe passing through the absorber and the condenser, and the sensor Based on the output of the group, create evaluation data that represents the decrease in heat transfer performance, calculate the time average of this evaluation data, and compare the calculated average value with a reference value to determine cooling water contamination. I was doing.

However, it is impossible to evaluate the deterioration of the performance of the absorption chiller as a heat source device or the occurrence of abnormalities caused by other factors that can be judged by the present invention due to cooling water stains. .

The present invention has been made in view of the circumstances of the prior art as described above, and an object thereof is to accurately predict the timing of inspection before the performance deterioration or abnormality of the heat source unit for the air conditioner occurs. It is to provide a management device and a management method.

Further, it is possible to provide a management apparatus and a management method capable of suppressing the loss of the user and further reducing the operation cost of the heat source device by accurately predicting and performing the maintenance. It is in.

[0011]

In order to achieve the above object, a first solving means is a management device for managing a heat source device for an air conditioner, wherein an operation of the heat source device is performed based on operation data of the heat source device, Means for analyzing the cycle operating state of the operation cycle associated with dilution and suspension, means for averaging the cycle operating state for a predetermined period, and the averaging processed data in a storage device in time series. Means for storing, means for comparing the data stored in time series with the current cycle operating state analysis data obtained by the means for analyzing, Means for detecting a time-dependent change in the degree of deterioration of the heat source device and / or progress of abnormality, means for estimating the degree of deterioration from the start of use based on the time-dependent change, Characterized in that it comprises a degradation threshold and means for determining the maintenance time from the degree of the estimated degradation was.

A second solving means is, in a management device for managing a heat source device for an air conditioner, when the respective parts of the heat source device are operating based on a temperature history of either the start time or the stop time of the heat source device. A means for estimating the temperature, a means for averaging the temperature of the cycle operation state of the operation cycle associated with the operation, dilution, and stopping for a predetermined period, and the temperature data subjected to the averaging are stored in time series. Starting to use based on the comparison result of the means for storing in the device, the means for comparing the temperature data stored in time series with the temperature data of the respective parts estimated by the estimating means, and the comparison result of the comparing means Means for detecting a time-dependent change in the degree of deterioration of the heat source device and / or the degree of progress of abnormality, means for estimating the degree of deterioration from the start of use based on the time-dependent change, Characterized in that it comprises a degradation threshold and means for determining the maintenance time from the degree of the estimated degradation was.

A third solution is an air conditioner in which a heat source unit for an air conditioner and a central monitoring unit are connected via an information communication network, and the central monitoring unit remotely centrally manages the heat source unit for the air conditioning unit. In the device heat source device management device, the central monitoring device includes a control device that manages the air conditioner heat source device, and the control device operates the heat source device transmitted via the information communication network. A means for analyzing the cycle operation state of the operation cycle associated with the operation, dilution, and stop of the heat source machine from the data, a means for averaging the cycle operation state for a predetermined period, and the averaged data To store the data in a storage device in time series, and compare the data stored in time series with the current cycle operating state analysis data obtained by the analysis. Means and the performance degradation of the heat source machine from the use start based on both data of the comparison result and /
Alternatively, a means for detecting a time-dependent change in the degree of progress of abnormality, a means for estimating the degree of deterioration from the start of use based on the time-dependent change, a maintenance based on a predetermined deterioration threshold value and the estimated degree of deterioration And a means for determining the time.

A fourth solving means is an air conditioner in which a heat source unit for an air conditioner and a central monitoring unit are connected via an information communication network, and the central monitoring unit remotely centrally manages the heat source unit for the air conditioning unit. In the management device of the heat source device for the apparatus, the central monitoring device includes a control device for managing the heat source device for the air conditioner, and the control device starts the heat source device transmitted through the information communication network. Means for estimating the operating temperature of each part of the heat source device based on either the temperature history at the time of stopping or at the time of stopping, and the temperature of the cycle operating state of the operating cycle associated with operation, dilution, and stopping for a predetermined period Means for averaging the temperature data, means for storing the temperature data subjected to the averaging processing in time series in the storage device, and the temperature data stored in the time series for the estimation. Means for comparing the temperature data of the respective parts estimated by the above, and means for detecting a time-dependent change in the degree of progress of the performance deterioration and / or abnormality of the heat source device from the start of use based on the comparison result of the both temperature data. And means for estimating the degree of deterioration from the start of use based on the change over time, and means for determining the maintenance time from a predetermined deterioration threshold value and the estimated degree of deterioration. Characterize.

A fifth solving means is, in the first to fourth solving means, comparing the temperature history during operation of the heat source device with a temperature history pattern at the time of occurrence of an abnormality stored in a storage device in advance, It is characterized in that an abnormal state of the heat source machine is diagnosed.

A sixth solving means is the heat source device according to the first to fourth solving means, according to the degree of deterioration estimated by the means for estimating the degree of deterioration from the start of use based on the change with time. It is characterized by further comprising means for changing the control logic for starting and stopping.

A seventh solving means is the heat source device according to the first to fourth solving means, according to the degree of deterioration estimated by the means for estimating the degree of deterioration from the start of use based on the change with time. Further comprising means for changing control logic relating to start and stop of the heat source machine, wherein the means for changing control logic changes to control logic for stopping the heat source machine when an abnormality of the heat source machine is diagnosed. And

An eighth solving means is the heat source device according to the first to fourth solving means, according to the degree of deterioration estimated by the means for estimating the degree of deterioration from the start of use based on the change with time. And a means for changing the control logic relating to the start and stop of the heat source device, wherein the means for changing the control logic is such that, when an abnormality of the heat source device is diagnosed, the abnormality does not occur in other parts due to the abnormality. It is characterized by changing to.

A ninth solving means is means for calculating the actual heat load of the air conditioner connected to the heat source machine from the analysis data analyzed by the analyzing means in the first to fourth solving means. The means for storing the time series data of the heat load of the air conditioner connected to the heat source device in the storage device is compared with the stored time series data and the current data, and the difference between the two is continuous. And a means for estimating the future heat load by correcting or updating the pattern of the heat load when it is judged to be continuous by the judging means. Characterize.

A tenth solving means is characterized in that, in the first to fourth solving means, a plurality of heat source units are provided.

An eleventh solving means is, in the tenth solving means, based on a future heat load estimated by the heat load estimating means, a means for causing a heat source machine having a small degree of deterioration to be used first. It is further characterized by being provided.

A twelfth solution means is a management method for managing a heat source device for an air conditioner, and based on operation data of one or more of the heat source devices, a cycle operation of an operation cycle associated with operation, dilution and stop of the heat source devices. Analyzing the state, averaging the cycle operation state of a predetermined period, the averaged data is stored in a storage device in time series,
The data stored in time series and the current cycle operating state analysis data obtained by the analyzing means are compared, and the performance of the heat source machine from the start of use based on the comparison result of both the compared data. A time-dependent change in the degree of progress of deterioration and / or abnormality is detected, the degree of deterioration from the start of use is estimated based on the time-dependent change, and the maintenance time is determined from a predetermined deterioration threshold and the estimated degree of deterioration. It is characterized by determining.

A thirteenth solution means is an air conditioner in which a heat source unit for an air conditioner and a central monitoring unit are connected via an information communication network, and the central monitoring unit remotely centrally manages the heat source unit for the air conditioning unit. In a method for managing a heat source device for a device, an operation of the heat source device from operation data of the heat source device transmitted via the information communication network,
Dilution, analyze the cycle operating state of the operation cycle associated with stoppage, average the cycle operating state of a predetermined period, store the averaged data in a storage device in a time series, The data stored in time series is compared with the current cycle operating state analysis data obtained by the analysis, and the performance deterioration and / or abnormality of the heat source device from the start of use is judged based on the comparison result of the both data. Detecting a change over time in the degree of progress, estimating the degree of deterioration from the start of use based on the change over time, and determining a maintenance time from a predetermined deterioration threshold and the estimated degree of deterioration. And

The fourteenth solution means is the twelfth or thirteenth solution.
In the solving means, the cycle operation state is a temperature state.

The fifteenth solving means is the twelfth or thirteenth means.
In the solving means described above, a plurality of the heat source units are provided.

In the following embodiments, the means for analyzing the cycle operation state is the means for executing the procedure 204 in FIG. 2, and the means for averaging the cycle operation state is the procedure 206 in FIG. 2, the storage device is stored in the device state database 24, the storage device is stored in the device state database 24, and the time-dependent change detection unit is stored in the device state database 24. The means for estimating and the means for determining correspond to the means for executing the steps 209 and 210, respectively, and the means for executing these steps correspond to the equipment state diagnosis unit 13.

Further, the means for diagnosing the abnormal state of the heat source device corresponds to the means for executing the steps 309 to 311 in FIG. 4, and the means for executing these steps is the equipment state diagnosing section 1.
Corresponds to 3. Further, the means for changing the control logic for starting and stopping the heat source device corresponds to the control logic creating unit 14, and means for calculating the actual heat load, the means for judging, the means for estimating the future heat load are The control load generating unit 61 corresponds to the heat load calculating unit 61, and means for operating the heat source device having the smaller deterioration degree first corresponds to the control logic generating unit 13.

Further, the steps carried out in the method correspond to the steps carried out by each said means.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

1 to 5 are for explaining the first embodiment. In addition, in this embodiment, although the case where an absorption chiller-heater is used as a heat source device for an air conditioner is described, the type of heat-source device is not limited to the absorption chiller-heater.

First, the structure and operation cycle of a double-effect absorption refrigerator, which is one of the objects to which the present invention is applied, will be described. In addition, the same reference numerals are given to the components corresponding to the respective units in FIG.

This double-effect absorption refrigerator uses water as a refrigerant and lithium bromide (LiBr) as an absorbent, and has a heating source such as a burner 631.
A high temperature regenerator 603 that generates a refrigerant vapor by heating an aqueous solution in which a refrigerant and an absorbent are mixed with a heating source, and a low temperature regeneration that generates a refrigerant vapor by heating the aqueous solution using the refrigerant vapor generated in the high temperature regenerator 603 as a heating source. The condenser 611 that cools and condenses the refrigerant vapor generated in the cooler 612 and the low temperature regenerator 612 and the refrigerant generated in the high temperature regenerator 603 and liquefied by heating the aqueous solution of the low temperature regenerator 612 by cooling with the cooling water flowing through the pipe. An evaporator 621 that cools the brine by cooling it by spraying the refrigerant liquid condensed in the condenser 611 from the spray header and evaporating it to remove latent heat of evaporation from the brine (cold water) flowing through the pipe.
03 and the low temperature regenerator 612, the concentrated aqueous solution (concentrated solution) is sprayed from the spray header, and cooled by the cooling water flowing through the pipe to absorb the refrigerant vapor evaporated in the evaporator 621 into the solution. Absorber 622 that produces a dilute solution (dilute solution), solution pump that feeds the dilute solution produced in absorber 622 to high temperature regenerator 603 (and low temperature regenerator 612), refrigerant spray pump, low temperature heat exchanger 60
5, existing in the case where the high temperature heat exchanger 604 and the absorber 622 are housed (air leaks because the inside of the case is lower than atmospheric pressure) (noncondensable gas) is collected and discharged to the outside of the case The air extraction device 606 is provided.

When the operation is started, the dilute solution in the absorber 622 is supplied to the high temperature regenerator 603 (and the low temperature regenerator 612) via the low temperature heat exchanger 605 and the high temperature heat exchanger 604 by the solution pump. The diluted solution is heated by the burner in the high temperature regenerator 603 to generate a refrigerant vapor. On the other hand, the solution in the high temperature regenerator 603 becomes thick. The refrigerant vapor is guided into the heating pipe of the low temperature regenerator 612, heats the solution in the low temperature regenerator 612 to generate refrigerant vapor, and is liquefied and guided to the condenser 611. The refrigerant vapor generated in the low temperature regenerator 612 is guided to the condenser 611, cooled by the cooling water flowing through the pipe, liquefied, and guided to the evaporator 621. The refrigerant introduced into the evaporator 621 is sprayed from the spray header by the refrigerant pump to be evaporated, and the latent heat of vaporization at the time of evaporation is removed from the brine flowing through the pipe to cool the brine to a temperature suitable for cooling. The refrigerant vapor evaporated in the evaporator 621 passes through the eliminator, flows into the absorber 621, is guided from the low temperature regenerator 612 (and the high temperature regenerator 603) to the absorber 622 via the heat exchanger, and is dispersed from the spray header. Upon contact with the concentrated solution and being absorbed by the concentrated solution, a dilute solution containing more refrigerant is produced. The cooling water is absorbed by the absorber 62.
2, the condenser 611 flows in this order, and the absorber 622 is the evaporator 6
A pressure below 21 is maintained.

When the heating by the burner 631 is stopped and the operation is stopped, the operation of the solution pump and the refrigerant pump is continued for a while, and the solution is circulated between the high temperature regenerator 603, the low temperature regenerator 612 and the absorber 622, and these high temperature regenerators are circulated. The concentration difference of the solution between the regenerator 603, the low temperature regenerator 612 and the absorber 622 is made small, and the refrigerant vapor of the evaporator 621 is absorbed in the solution of the absorber 622 to make the concentration of the solution as thin as possible, and the high temperature regeneration is performed. 603, low temperature regenerator 612
The operation is stopped after performing the dilution operation for preventing the solution of (3) from crystallizing. In this way, the double-effect absorption refrigerator is operated with the operation start, the dilution operation, and the operation stop as one cycle.

FIG. 1 is a system diagram for remote centralized management of a heat source unit for an air conditioner. The management system of the heat source device for the air conditioner is composed of the service company 1 and the customer 100, which are connected by the information communication network 90,
The service company 1 side manages the heat source machine 101 on the customer side 100 side. The service company 1 has a central monitoring device 10,
It is basically composed of a maintenance staff 30, a sales office 40, a maintenance support department 50, a facility repair proposal department 60, an accounting department 80 and a materials department 90.

The central monitoring device 10 includes a data receiving unit 11,
Each processing unit of the data conversion unit 12, the device state diagnosis unit 13, the control logic creation unit 14, and the data / signal transmission unit 15, the customer operation database 21, the customer facility database 22, the failure case database 23, and the device state database 24.
Of each database, an output device 27, and an input device 26.

The maintenance person 30 carries the portable terminal 31 to exchange necessary information. The sales office 40 has an output device 27,
A process management system 42 and a maintenance plan quotation preparation system 41 are provided. The maintenance support department is provided with a failure case database 23 and a device state detailed diagnosis tool 51. Further, the equipment refurbishment proposal section 60 includes a heat load calculation section 61, an auxiliary equipment setting section 62, a deterioration / life diagnosis section 63, and a heat source machine setting section 6.
4 and a facility refurbishment proposing unit 64 to which these outputs are input are provided. Further, the accounting department 70 has a slip creation system 70, and the materials department 80 has an inventory management system 81.
Are provided respectively.

On the other hand, the customer 100 has a plurality of heat source units 10
1, a monitoring terminal 104 provided in each heat source device 101, a unit number control panel 103, a repeater 105, and an output device 107 are provided. Further, each of the heat source devices 101 is provided with an operation panel 102 and a sensor 106, the sensor output is input to the monitoring terminal 104, and the operation output from the monitoring terminal 104 is input to the operation panel 102. The repeater 105 is connected to the information communication network 90, and includes the output device 107, the monitoring terminal 104, the unit number control panel 103, and the central monitoring device 10.
Relay information between.

Generally, one or a plurality of heat source units 101 for air conditioners of residential or industrial buildings are installed in each building. The service company 1 installs the monitoring terminal 104 on these heat source devices 101, connects to the central monitoring device 10 via the information communication network 90, performs remote centralized management, and configures a management system.

The monitoring terminal 104 is a sensor 106 for measuring the state quantity of each part in order to grasp the operating state of the heat source unit 101.
And a signal input unit for inputting other signals related to the operating state of the heat source device 101, an information storage unit for storing information on the input signal and signal input time, an arithmetic control unit for determining an abnormality based on the input signal, and the stored information. It is provided with a transmitting unit for transmitting to the central monitoring device 10 and a transmitting / receiving unit for receiving an operation signal related to the heat source device 101 transmitted from the central monitoring device 10 and transmitting the operation signal to an operation panel 102 attached to the heat source device 101. There is. The signal for grasping the state of the heat source device 101 is, for example, in the case of an absorption chiller-heater, a high temperature regenerator solution temperature, a low temperature regenerator refrigerant condensing temperature, a cold / hot water inlet temperature, a cold / hot water outlet temperature, a cooling water inlet temperature, Cooling water inlet temperature, cooling water outlet temperature, exhaust gas temperature of the combustor installed in the high temperature regenerator, high temperature regenerator pressure, condenser pressure, evaporator pressure physical quantity of each part of the cold and hot water machine, solution circulation pump, There are signals indicating the operating states of the refrigerant circulation pump and the high-temperature regenerator burner, and further control signals issued by the operation panel 102 attached to the main body of the absorption chiller-heater.

When a plurality of heat source units (cooling / heating machines) 101 are installed in the air conditioner, a unit number control panel 103 for controlling start and stop of the plurality of heat source units 101 is installed. It is common. This unit control panel 103 is also connected to the central monitoring device 10.
Information is transmitted and received. In the figure, a plurality of heat source units 10
1 shows a building in which 1 is installed, and each monitoring terminal 104 is provided via a repeater 105 installed in the building.
Also, the unit number control panel 103 and the central monitoring device 10 are connected. In addition, in this embodiment, although it has the above-mentioned configuration, as long as each heat source device 101, the unit number control panel 103, and the central monitoring device 10 can transmit and receive information,
It is not limited to the illustrated example.

The information transmitted from the monitoring terminal 104 in a predetermined format is received by the data receiving section 11 of the central monitoring device 10 and stored in the customer driving database 21. In addition,
The information transmitted from the monitoring terminal 104 to the central monitoring apparatus 10 is compressed to reduce the burden on the information communication network 90, or leaked to a third party other than the customer 100 and the service company 1. Since the data may be encrypted in order to prevent it, it is preferable that the central monitoring device 10 is provided with a data conversion unit 12 that converts the data into a format that can be used for device status diagnosis or other operation data analysis. The received information is accumulated in the customer operation database 21, and the equipment state diagnosis unit 13 makes a diagnosis.

The analysis processing in the equipment state diagnosis unit 13 depends on the operating state of the heat source unit, but for the heat source unit that often has a long operating time and is in a stable state, the heat source unit uses the temperature and pressure of each unit as boundary conditions. Diagnosis is possible by solving the heat and material balance of each part of the machine cycle. In this case, a diagnosis is made by performing a calculation so that the error between the measured temperature of each part and the result of the analysis is minimized by using a parameter such as a previously assumed failure, for example, the contamination of the tube or the solution concentration in the refrigerant. I do.

In the case of a machine where the load on the heat source machine is small and the start / stop is frequently repeated, the temperature in the unsteady state is determined based on the heat and the material balance, as in the case where there is stable data. There is a method of calculating measured data such as pressure and pressure under boundary conditions, but a method of estimating and diagnosing a stable state from the history of temperature and pressure in an unsteady state can be considered.
This diagnostic method will be described below.

In the device state diagnosis unit 13, the processing is performed according to the procedure shown in the flowchart of FIG. 2 or 4. FIG. 2 shows the relationship between the temperature change rate and the time average temperature from the temperature history at the time of activation of the heat source device 101, and by estimating the relationship between them, the temperature of each part of the heat source device 101 is estimated to be substantially stable, It is a flowchart which shows the diagnostic procedure which diagnoses the progress of performance degradation from the difference between the estimated stable state and the stable state estimated in the past.

First, in step 201, the central monitoring unit 10
Temperature data T of the heat source device 101 arranged in time series such as T (n-1), T (n), T (n + 1) ...
(N) and the time when the data was acquired are read. Next, in step 202, from the difference between the temperature data T (n-1) immediately before and the target temperature data T (n), the operating state of the heat source device 101 is changed to three states of operating, diluting, and stopping. Classify. Here, when it is determined that the data is data at the time of dilution or at the time of stop, the procedure returns to step 201 and the next data T (n + 1) is read.

When it is determined in step 202 that the data is data during operation, the process proceeds to step 203. In step 203, the temperature change defined by the following equation (1) using the acquisition interval τ (n) of the immediately preceding temperature data T (n-1) and the target temperature data T (n). Rate ΔT
The time average temperature Tm (n) defined by (n) and the following equation (2) is calculated.

ΔT (n) = {T (n) −T (n−1)} / τ (n) (1) Tm (n) = {T (n) + T (n−1)} / 2 (2) Next, in step 204, from the relationship between the temperature change rate ΔT and the time average temperature Tm (n), the temperature T in the stable state where the temperature change rate ΔT = 0 shown in the following formula (3) is obtained. ∞ (n) is calculated from ΔT (n) and Tm (n) calculated in step 203.

T ∞ (n) = 1 / [1 / Tm (n) − {Ln (1 + ΔT (n)} / A] (3) Note that A in the equation (3) is a coefficient and is a heat source. Machine 101
Since a different value can be taken for each, it is made into a database in the central monitoring device in advance from inspection data at the time of shipping of the heat source device 101 or operation data at the time of installation. Next, in step 205, it is judged whether the calculation is completed for all the received data, and if there is remaining data, step 2
Return to 01 and complete step 2 when all data have been calculated.
Proceed to 06.

In step 206, an average value is calculated for the stable temperature T ∞ (n) obtained from the received data, and the stable state is obtained at the stage when the data is received. Stable temperature T∞ (n)
The average value of is stored in the device state database 24 as shown in step 207 for use in subsequent diagnosis. In this process, averaging is performed.

Next, as shown in step 208, the past stable state stored in the database is read and compared with the stable state obtained in step 206, and the performance deterioration is determined from the performance deterioration and the change in the stable state which are stored in the database in advance. And the degree of progress of performance degradation. It is also possible to diagnose the heat source machine by using the above-described means for analyzing the stable state based on the stable state obtained by the above means.

Next, in step 209, the fuel cost for the future operation of the heat source device 101 is estimated from the progress of the performance deterioration estimated in step 208 and the past operation time, and the fuel cost is similarly calculated when the maintenance is performed. Figure 3 shows the estimate, the maintenance time that minimizes the operating cost of the heat source unit 101, which is the sum of the maintenance cost and the fuel cost, and shows the current degree of performance degradation, the degree of performance degradation, the maintenance period, and the fuel cost reduction effect of maintenance. Output diagnostic results in the format shown. In this diagnostic method, how to accurately estimate the stable state of the heat source device 101 is an important factor for the diagnostic accuracy.
Therefore, by setting a period such as one week or one month in advance and averaging the stable states estimated during that period, it is possible to more accurately grasp the progress of performance degradation.

FIG. 4 compares the temperature history during operation of the absorption heat source machine with the temperature history at the time of occurrence of an abnormality, identifies a similar pattern of temperature history, and identifies the phenomenon considered to be anomalous, the number of occurrences, Alternatively, it is a flow chart showing a diagnostic procedure for evaluating the degree of abnormality of the device constituting the heat source device 101 by evaluating the integrated value of the number of occurrences or the occurrence frequency obtained by dividing the number of occurrences by the number of activations.

First, in the same way as the previous diagnostic method, the procedure 301
T (n-1), T received by the central monitoring apparatus 10 at
The temperature data T (n) of the heat source device 101 arranged in time series such as (n), T (n + 1) ... And the time when the data was acquired are read. Next, in step 302, the temperature data T (n-1) one time before and the target temperature data T
From the difference with (n), regarding the operating state of the heat source device 101,
It is classified into three states: operation, dilution, and stop. If it is determined that the data is the data at the time of stop, the process returns to step 301 to read the next data T (n + 1).

If it is determined in step 302 that the data is data during operation or dilution, the process proceeds to step 303, and the previous data is determined to be dilution or stop. Advance the counter. Further, the procedure proceeds to step 304, and the temperature change pattern at the time of abnormality stored in advance is compared.
In 05, the abnormality occurrence counter is advanced to count the number of abnormality occurrences, and the procedure proceeds to step 306. In step 304,
If it is determined that the pattern is different from the temperature change pattern at the time of occurrence of abnormality (a state considered to be normal), the procedure proceeds to step 306.
In step 306, it is determined whether or not the determination has been completed for all the received data, and if there is remaining data, the process returns to step 301, but if the determination for all the data has been completed, the process proceeds to step 307.

In step 307, the number of abnormal occurrences per start number, that is, the abnormal occurrence frequency, is calculated from the number of times of activation counted in step 303 and the number of abnormalities counted in step 305. Then, as shown in step 308, the number of times of occurrence of abnormality, the number of times of activation, and the frequency of occurrence of abnormality are stored in the device state database 24 so that they can be utilized in the subsequent diagnosis. Next, in step 309, the degree of deterioration is calculated by comparing with the number of times of occurrence of abnormality or the frequency of occurrence of abnormality in the past or by the integrated value of the number of times of occurrence of abnormality, and in step 310, the degree of deterioration is compared with the maintenance reference value. The diagnostic result such as the degree and the number of occurrences of abnormality is output. The actual diagnosis result is displayed in the format shown in FIG.
The diagnosis result shown in FIG. 5 displays the number of times of integration of the same temperature change pattern as when an abnormality occurs, but a method of displaying the degree of abnormality not only by the number of times of integration but also by the frequency of occurrence of the phenomenon considered to be abnormal with respect to the number of startups Conceivable.

The diagnostic result obtained by the diagnostic procedure shown in FIG. 2 or 4 is transmitted from the data / signal transmitting unit 15 of the central monitoring apparatus 10 in the format shown in FIG. Alternatively, it is transmitted to the output device 27 of the sales office 40 serving as the base of the maintenance staff 30, the maintenance plan creation unit 41, and the process management system 42, and at the same time, transmitted to the output device 107 of the customer 100 for display or printout. By sending this diagnosis result, sales office 40
It is possible to make a maintenance plan, make an estimate, manage the process of the maintenance person 30, and make a proposal to the customer 100 in advance.
Furthermore, even the customer 100 owns the heat source machine 101.
It is possible to grasp the state of.

According to these diagnostic methods, the state of the device can be diagnosed even in a state where the temperature of each part of the heat source device 101 or other physical quantity changes from immediately after the start up to the stable state is relatively large. Becomes Many absorption chillers used as heat sources for air conditioners are rarely operated in a stable state because capacity control is performed by burning and stopping the combustor that heats the solution in the high temperature regenerator. However, there is an advantage that it is possible to diagnose such a water heater.

Next, in the control logic creating section 14, the operating cost of the heat source device 101 is suppressed or the failure is stopped based on the degree of progress of the performance deterioration and abnormality of the heat source device 101 which is grasped by the above-mentioned diagnosis procedure. Create an operation control method that reduces the possibility. For example, as shown in FIG. 1, when a plurality of absorption chiller-heaters are used as the heat source unit 101 of the air conditioner of the same system, the number of operating units is changed according to the load of the air conditioner, but the performance is degraded. By preferentially operating the chiller-heater with a small size, the cost for operating the chiller-heater can be reduced. Moreover, the possibility that the relevant machine is operated can be suppressed by using the control logic that lowers the operation priority order of the heat source machine 101 in which a sign of abnormality appears. By changing this control method, it is possible to secure the downtime of the relevant machine, and it is possible to repair it before a failure and stop.

Further, when the abnormality of the absorption chiller-heater is determined, as a measure for avoiding the failure stop of the chiller-heater or the fatal damage, the control logic creating unit 14 of the central monitoring unit 10 causes the heat source Of logic for changing the operating state of the machine (chiller / heater) 101, and the operation signal thereof is transmitted by the transmitter 15
There is a method of changing the operating state of the water chiller / heater by sending the For example, in the absorption chiller-heater, when the absorbing liquid is mixed in the refrigerant, the evaporation temperature of the refrigerant rises, so that sufficient capacity cannot be obtained. In this case, it is necessary to send the refrigerant of the evaporator to the regenerator and separate the refrigerant and the absorbing liquid again, but an electromagnetic valve is installed in the pipe that sends the refrigerant of the evaporator to the regenerator, The operating state can be changed by appropriately transmitting a signal for opening the solenoid valve. Also, in the absorption chiller-heater, cooling water is passed through the machine in order to discharge the absorption heat generated in the absorber and the condensation heat of the refrigerant, but when dirt adheres to the inside of the cooling water pipe. The hot and cold water machine may stop due to the high pressure inside the machine. Further, even when the inside of the machine is in a high-pressure state for other reasons, if the possibility of stoppage can be easily estimated from the information from the monitoring terminal 104, the combustion device provided in the high temperature regenerator can adjust the combustion amount. In the above, by suppressing the combustion amount, it is possible to avoid the stop due to the increase of the internal pressure. These are methods of avoiding a failure stop or changing to an operating state for eliminating an abnormal condition. However, if it is necessary to quickly stop the chiller-heater depending on the extent of the failure and perform maintenance, the central monitoring device 10 By sending the stop signal, it is possible to prevent the chiller-heater from being fatally damaged.

When determining the operation control logic of the chiller / heater based on such a fault diagnosis and the fault diagnosis, the difference caused by the equipment attached to the chiller / heater or the individual chiller / heater generated at the manufacturing stage of the chiller / heater. It is well known that the difference causes a difference in the operating state when the chiller-heater is operating without abnormality. Needless to say, these are problems in performing failure diagnosis. In order to solve this problem and to provide more accurate failure diagnosis and operation control of the chiller / heater, information on the equipment attached to each chiller / heater and the operation record of the chiller / heater at the factory shipment stage It is conceivable that a customer facility database 22 composed of information such as the performance curve of each chiller-heater created based on the above is created and referred to in failure diagnosis or control logic determination. Further, in order to make the failure diagnosis highly accurate, it can be said that the creation of the failure case database 23 for performing the verification by comparing the diagnosis result with the actual phenomenon and reviewing the diagnosis method is also an effective means.

The diagnostic result of each chiller / heater and the created control logic and operation signal are transmitted from the transmitter 15 to each monitoring terminal 104 and the unit control panel 103 via the information communication network 90 and the relay 105, and are required. The control logic and the operating state are changed according to the above. At the same time, the data is transmitted to the output device 107 of the customer 100 and the operation data and the diagnosis result are displayed.

When the device state diagnosis unit 13 detects an abnormality in the heat source device (cooling / heating machine) 101 that requires maintenance by the maintenance personnel 30, the device is in the closest distance to the heat source device 101.
Or maintenance personnel who can rush in the shortest time 3
If the transmitter 15 of the central monitoring device 10 is notified of the details of the failure, the details of the work for recovery from the failure, and the information about the necessary equipment to the mobile terminal 31 of 0, a quick response is possible. Become. At this time, if the same information is transmitted to the sales office 40 of the service company 1, which is the activity base of the maintenance staff 30, the sales office 40 requires the necessary equipment 32.
It is possible to support the maintenance staff 30 such as preparation for. Also,
The maintenance person 30 carries the mobile terminal 31, and the work report is transmitted from the mobile terminal 31 to the sales office 40, the material department 80 that manages the inventory of parts and equipment, and the accounting department 70, and the personnel management system 42 and the inventory management. If it can be used in the system 81 and the slip creation system 71, it becomes possible to provide a quick maintenance service at a lower cost. For example, based on the transmitted work report, it becomes possible to grasp the inventory of parts and equipment at the sales office 40, replenish parts for which a shortage is expected, or place an order with a parts maker to manage inventory. Delay in maintenance work due to lack of equipment can be avoided. At the same time, the work report is transmitted to the sales office 40 and the accounting department 70 to automate the creation of the slip related to the billing of the maintenance cost caused by the work, and the sales office 4
It is possible to manage the process of the maintenance personnel at 0, and it is possible to provide a quick maintenance service. Further, the work report can be used for confirmation and update of the diagnosis method for determining an abnormality, and thus the accuracy of the abnormality diagnosis method can be improved. Further, when it is difficult for the maintenance staff to find the location of the abnormality when the chiller / hot water machine is maintained, by sending a detailed report on the chiller / hot water machine to the maintenance support department 50, In comparison with the failure case, a form of maintenance support in which a more detailed diagnosis result or work instruction than the diagnosis result transmitted from the central monitoring device 10 is received is also possible. When performing such maintenance support, it is necessary to create and update the failure case database 23. For this purpose, the work report transmitted from the mobile terminal 31 is used.

Further, when maintenance is required for aging of the water heater and chiller, if maintenance service is performed at the same time as regular work such as switching between cooling and heating operation of the chiller water heater, maintenance work can be further performed. Maintenance can be performed at low cost. With respect to such services, the result of diagnosis by the central monitoring device 10 is transmitted from the central monitoring device 10 to the sales office 40, and the maintenance staff 3
This can be achieved by utilizing it for zero process management and optimizing the work assignment of the maintenance personnel 30. In addition, by grasping the progress of deterioration over time, it is possible to notify the customer 100 in advance of the maintenance time and an estimate of the cost required for the maintenance.
It is possible for the customer 100 to know the cost related to the facility repair in advance, and there is an advantage that the budget can be easily organized.

Further, the life diagnosis 63 is performed for a machine that has deteriorated over time, and by utilizing the customer operation database 21 together, the load of each heat source unit 101 and the air conditioner connected to the heat source unit 101 can be determined. The heat load calculation unit 61 obtains an annual operating condition, and the setting units 63 and 64 for the air conditioning heat source device and the auxiliary device are performed based on the customer's facility information 22 to evaluate the operating cost and environmental load for facility renewal. It will be possible to make proposals for facility repairs by comparing the maintenance and maintenance costs and operating costs of the existing absorption chiller-heater.

In this embodiment, each heat source unit 1
The mode in which the monitoring terminal 104 is installed in 01 to perform remote centralized management has been described, but the operation panel 1 attached to the heat source device 101
If 02 has the function of the monitoring terminal 104 described above,
Can provide similar services.

Next, a second embodiment of the present invention will be described with reference to FIG. The system diagram shown in FIG. 1 represents a case where a plurality of heat source units 101 are used as heat source units of the same air conditioner. At this time, the load state of each heat source device 101 can be grasped in the central monitoring device 10 by measuring the heat source device inlet and outlet temperatures of the cold or hot water of each heat source device 101. Furthermore, the change of the heat load to the air conditioner can be predicted from the change of the inlet temperature of the heat source device of the cold water or the hot water. Information about the heat load obtained from each of these heat source devices 101, the performance curve and chilled water flow rate of each heat source device obtained from the customer facility database 22, and the performance deterioration and abnormal progress of each heat source device 101 accumulated in the device state database 24. From the predicted heat load to the air conditioner, selection of an operating machine with the least power consumption or gas consumption, determination of the number of operating machines, operation priority order of each heat source machine 101,
Alternatively, the control logic creating unit 14 determines the control logic such as the setting of the load factor of each heat source device 101. The control logic determined in this way is transmitted from the transmitter 15 via the information communication network 90 to the monitoring terminal 104 and the unit number control panel 10.
3 is sent to change the operation pattern. As described above, the operating cost of the heat source device can be reduced by selecting the operation pattern that consumes the least amount of power or gas according to the heat load applied to the air conditioner. In this case, information about the heat load obtained from each heat source device 101 and the heat source device 1
The operation state of 01 is stored in the customer operation database 21 as the heat load pattern of the air conditioner of the customer 100, and the above pattern is updated periodically, so that the heat load can be more accurately estimated. This enables more appropriate control of the heat source device 101. Also, if you understand the pattern of heat load on the air conditioner in this way,
When an abnormality occurs in the heat source device 101 or a need for protective work due to the progress of deterioration, it is possible to determine the maintenance time when the heat load on the air conditioner is small.
In addition, the load factor of the heat source device 101 where an abnormality is recognized is reduced,
Until the time when maintenance work of the heat source device 101 can be performed, operation control that avoids a failure stop can be performed.

In this way, when the remote centralized management method for appropriately controlling the number of operating air conditioner heat source units 101 from the central monitoring unit 10 according to the load is used, the service company 1
Can charge the customer 100 a cost including operation cost of electricity and gas and maintenance cost according to the operating time of the heat source device 101 or the load of the air conditioner. It becomes possible to provide comprehensive services.

In the above embodiment, the case where the absorption chiller-heater is used as the heat source device has been described, but it is also possible to use the compression chiller as the heat source device.

The compression refrigerating machine is a refrigerating machine which makes use of the fact that it rises when the saturation temperature of the refrigerant increases, and is installed on the high pressure side and the low pressure side of the cycle divided by the compressor and the expansion valve. The refrigerant vapor that exits the compressor configured by the heat exchanger releases the latent heat of the refrigerant in the heat exchanger on the high pressure side to become a liquid refrigerant. The liquid refrigerant is decompressed through the expansion valve, proceeds to the heat exchanger on the low pressure side, absorbs latent heat from the outside, and becomes refrigerant vapor to be sent to the compressor. When the refrigerator is used as a heat source unit for air conditioning, indoor air, water or brine is passed through the heat exchanger on the low pressure side to allow the refrigerant to absorb the heat. Further, the heat exchanger on the high pressure side exchanges heat with the outside air or the cooling water passed through the cooling tower.

As described above, in order to release heat to the outside, when heat is exchanged with the cooling water or heat is exchanged with the air, heat exchange performance due to dirt causes performance deterioration. . When dirt adheres, it is necessary to remove the dirt, but it is necessary to diagnose the adhesion of dirt, which is the refrigerant pressure or temperature of the heat exchanger to be diagnosed and the water or air that exchanges heat with the refrigerant. The temperature can be measured and the diagnosis can be made based on the temperature difference between the two and the ability of the heat exchanger.

Such stains generally attach over time, and as described in the first embodiment of the present invention, by grasping the change from the time of use, even if there are individual differences in the equipment. Accurate diagnosis is possible.

[0073]

As described above, according to the present invention, it is possible to accurately predict the time of inspection before the performance deterioration or abnormality of the heat source unit for the air conditioner occurs. Further, since it is possible to accurately predict the time to inspect before the performance deterioration or abnormality of the heat source device for the air conditioner, it becomes possible to perform maintenance by accurate prediction, suppress the loss of the user, and further, the heat source device It is possible to reduce operating costs.

[Brief description of drawings]

FIG. 1 is a system diagram relating to remote centralized management of a heat source device for an air conditioner according to the present invention.

FIG. 2 is a flowchart for diagnosing a performance deterioration of the heat source device according to the present invention.

FIG. 3 is a diagram showing a diagnosis result regarding performance degradation of the heat source device in the present invention.

FIG. 4 is a flowchart for diagnosing a heat source device abnormality in the present invention.

FIG. 5 is a diagram showing a diagnosis result regarding abnormality of the heat source device in the present invention.

FIG. 6 is a view showing an example of a conventional air conditioning heat source device.

[Explanation of symbols]

1 service company 10 Central monitoring device 11 Data receiver 12 Data converter 13 Equipment status diagnosis section 14 Control logic creation section 15 Transmitter 21 Customer driving database 22 Customer equipment database 23 Failure Case Database 24 Equipment status database 26 Input device 27 Output device 61 Heat load meter 62 Auxiliary equipment setting section 63 Deterioration / lifetime diagnosis section 64 Heat source machine setting section 65 Equipment Improvement Proposal Department 90 Information and communication network 100 customers 101 Heat source machine (cool water heater) 102 Heat source machine operation panel 103 Unit control panel 104 monitoring terminal 105 repeater 106 sensor 107 Output device for customer

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Akira Nishiguchi             502 Kintatemachi, Tsuchiura City, Ibaraki Japan             Tate Seisakusho Mechanical Research Center (72) Inventor Tatsuro Fujii             502 Kintatemachi, Tsuchiura City, Ibaraki Japan             Tate Seisakusho Mechanical Research Center (72) Inventor Ken Noshiro             502 Kintatemachi, Tsuchiura City, Ibaraki Japan             Tate Seisakusho Mechanical Research Center (72) Inventor Kyoichi Sekiguchi             6-6 Kandanishikicho, Chiyoda-ku, Tokyo             Inside the Hitachi Building System (72) Inventor Kenji Machizawa             6-6 Kandanishikicho, Chiyoda-ku, Tokyo             Inside the Hitachi Building System (72) Inventor Yoshikazu Hanawa             6-6 Kandanishikicho, Chiyoda-ku, Tokyo             Inside the Hitachi Building System (72) Inventor Tomio Nakajima             6-6 Kandanishikicho, Chiyoda-ku, Tokyo             Inside the Hitachi Building System (72) Inventor Haruo Nashimoto             6-6 Kandanishikicho, Chiyoda-ku, Tokyo             Inside the Hitachi Building System F-term (reference) 3L061 BA05

Claims (15)

[Claims] 1. A management device for managing a heat source device for an air conditioner, means for analyzing a cycle operation state of an operation cycle associated with operation, dilution, and stop of the heat source device from operation data of the heat source device, and a predetermined unit. Means for averaging the cycle operating state for a predetermined period, means for storing the averaged data in a storage device in time series, means for analyzing the data stored in time series Means for comparing with the current cycle operating state analysis data obtained by the above, and based on the comparison result of the comparing means, the deterioration of the performance of the heat source device from the start of use and / or the change over time in the degree of progress of abnormality are detected. Means, a means for estimating the degree of deterioration from the start of use based on the change over time, and a maintenance time based on a predetermined deterioration threshold and the estimated degree of deterioration. Means for determining, the management apparatus of an air conditioner for a heat source apparatus, characterized in that it comprises. 2. A management device for managing a heat source device for an air conditioner, wherein the temperature of each part of the heat source device is approximately stable after the operation based on the temperature history of either the start time or the stop time of the heat source device. A means for estimating the temperature, a means for averaging the temperature of the cycle operation state of the operation cycle associated with the operation, dilution, and stopping for a predetermined period, and the temperature data that has been averaged is stored in time series. Means for storing in the device, means for comparing the temperature data stored in time series with temperature data of the respective parts estimated by the estimating means, and start of use based on a comparison result of the comparing means Means for detecting a time-dependent change in the degree of deterioration of the heat source machine and / or the degree of progress of abnormality, and a means for estimating the degree of deterioration from the start of use based on the time-dependent change, Was degraded threshold and the estimated means for determining a maintenance timing and a degree of deterioration, the management apparatus of an air conditioner for a heat source apparatus, characterized in that it comprises. 3. A heat source unit for an air conditioner, wherein a heat source unit for an air conditioner and a central monitoring unit are connected via an information communication network, and the central monitoring unit remotely centrally manages the heat source unit for an air conditioning unit. In the management device, the central monitoring device includes a control device that manages the heat source device for the air conditioner, and the control device is configured to operate the heat source device based on operation data of the heat source device transmitted via the information communication network. Means for analyzing the cycle operation state of the operation cycle associated with the operation, dilution, and stop of, the means for averaging the cycle operation state for a predetermined period, and the averaging-processed data in time series. Means for storing in a storage device, means for comparing the data stored in time series with current cycle operating state analysis data obtained by the analysis, Means for detecting a time-dependent change in the degree of performance deterioration and / or abnormality progress of the heat source device from the start of use based on the comparison result of both data; An apparatus for managing a heat source device for an air conditioner, comprising: a means; and a means for determining a maintenance time from a predetermined deterioration threshold value and the estimated degree of deterioration. 4. A heat source unit for an air conditioner, wherein a heat source unit for an air conditioner and a central monitoring unit are connected via an information communication network, and the central monitoring unit remotely centrally manages the heat source unit for an air conditioning unit. In the management device, the central monitoring device includes a control device that manages the heat source device for the air conditioner, the control device, when starting and stopping the heat source device transmitted via the information communication network. Means for estimating the operating temperature of each part of the heat source device based on any one of the temperature history, and averaging the temperature of the cycle operation state of the operation cycle associated with the operation, dilution and stop for a predetermined period Means, means for storing the temperature data subjected to the averaging process in a storage device in time series, and estimation by the means for estimating temperature data stored in time series A means for comparing the temperature data of the respective parts, and a means for detecting a time-dependent change in the performance deterioration of the heat source device from the start of use and / or the progress degree of abnormality based on the comparison result of the both temperature data, A means for estimating the degree of deterioration from the start of use based on the change over time, and a means for determining a maintenance time from a predetermined deterioration threshold value and the estimated degree of deterioration are provided. A heat source management device for an air conditioner. 5. A means for diagnosing an abnormal state of the heat source device by comparing a temperature history during operation of the heat source device with a temperature history pattern stored in advance in a storage device when an abnormality occurs. The remote centralized management device for a heat source unit for an air conditioner according to any one of claims 1 to 4. 6. A means for changing the control logic for starting and stopping the heat source device according to the degree of deterioration estimated by the means for estimating the degree of deterioration from the start of use based on the change over time. The management device for a heat source device for an air conditioner according to any one of claims 1 to 4, characterized in that: 7. A means for changing the control logic for starting and stopping the heat source device according to the degree of deterioration estimated by the means for estimating the degree of deterioration from the start of use based on the change with time, The means for changing the control logic changes to a control logic for stopping the heat source machine when an abnormality of the heat source machine is diagnosed.
Item 10. A heat source device management device for an air conditioner according to Item. 8. A means for changing the control logic for starting and stopping the heat source device according to the degree of deterioration estimated by the means for estimating the degree of deterioration from the start of use based on the change over time, 5. The means for changing the control logic, when an abnormality of the heat source machine is diagnosed, changes to a control logic that avoids causing an abnormality in another part due to the abnormality. Item 1. A method of managing a heat source device for an air conditioner according to Item 1. 9. A unit for calculating an actual heat load of an air conditioner connected to the heat source unit from the analysis data analyzed by the analyzing unit, and a heat load of the air conditioner connected to the heat source unit. Means for storing the time-series data in a storage device, means for comparing the stored time-series data with the current data to determine whether the difference between the two is continuous, and the means for determining continuously If it is determined that the heat load pattern is corrected and updated, a means for estimating a future heat load is provided, and any one of claims 1 to 4 is provided. A heat source management device for an air conditioner as described. 10. The management device for a heat source device for an air conditioner according to claim 1, wherein a plurality of the heat source devices are provided. 11. The heat source apparatus according to claim 10, further comprising means for operating the heat source machine having a smaller degree of deterioration first based on the future heat load estimated by the means for estimating the heat load. A heat source management device for an air conditioner as described. 12. A management method for managing a heat source unit for an air conditioner, comprising: operating one or more heat source units based on operation data of the heat source units;
Dilution, analyze the cycle operating state of the operation cycle associated with stop, average processing the cycle operating state of a predetermined period, the averaged data is stored in a storage device in time series, The data stored in time series is compared with the current cycle operating state analysis data obtained by the analyzing means, and the performance of the heat source device is deteriorated from the start of use based on the comparison result of both the compared data. And / or detecting the change over time in the degree of progress of the abnormality, estimating the degree of deterioration from the start of use based on the change over time, and determining the maintenance time from a predetermined deterioration threshold and the estimated degree of deterioration. A method of managing a heat source device for an air conditioner, which is characterized by determining. 13. A heat source device for an air conditioner, wherein a heat source device for an air conditioner and a central monitoring device are connected via an information communication network, and the central monitoring device remotely centrally manages the heat source device for an air conditioning device. In the management method, from the operation data of the heat source device transmitted via the information communication network, the operation of the heat source device, dilution, analyze the cycle operation state of the operation cycle accompanying stop, the predetermined period of the Cycle operation state is averaged, the averaged data is stored in a storage device in time series, the data stored in time series and the current cycle operation state analysis data obtained by the analysis, Based on the comparison result of both the data, the deterioration of the performance of the heat source device and / or the change in the degree of progress of abnormality from the start of use are detected, Management of the heat source unit for the air conditioner, characterized in that the degree of deterioration from the start is estimated based on the change with time, and the maintenance time is determined from a predetermined deterioration threshold and the estimated degree of deterioration. Method. 14. The method of managing a heat source device for an air conditioner according to claim 12, wherein the cycle operation state is a temperature state. 15. The management method for a heat source device for an air conditioner according to claim 12, wherein a plurality of the heat source devices are provided.