JPH09236306A - Remote monitor for gas engine heat pump type air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote monitor for a GHP type air conditioner capable of responding to an emergency countermeasure request in such a situation that detected information is abnormal information indicative of abnormality of an instrument. SOLUTION: A remote monitor 1 for a GHP type air conditioner is adapted such that an operation state of a GHP type air conditioner 2 is detected, and detected operation state detection information is sent to a monitor center 3 through a communication line 4, in which center 3 the operation state of the air conditioner 2 is monitored. In the remote monitor, there is provided detected information output means (monitor adapter) 5 for transmitting abnormal information in the operation state detection information from an air conditioner side to a monitor center side prior to ordinary information.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote monitoring device for a GHP type air conditioner, and more particularly to handling abnormal information when an abnormal condition requiring an emergency response occurs.

[0002]

2. Description of the Related Art GHP type air conditioners, like all other devices, require regular maintenance. The time when this maintenance should be performed is generally determined based on the cumulative operating time of the air conditioner, and for that purpose, it is necessary to acquire the cumulative operating time information for each air conditioner. Therefore, an air conditioner may be equipped with an hour meter that displays the cumulative operating time.
There is a problem that it is necessary to regularly go to the installation site of each air conditioner to read the hour meter.

Therefore, the operating state such as the cumulative operating time of each air conditioner is detected, and the operating state detection information is periodically transmitted (periodic call) to the monitoring center via the communication line to monitor the center. Development of a remote monitoring device for displaying and monitoring the operating state on a device (monitor) or the like is in progress.

[0004]

By the way, in the case of the above-mentioned remote monitoring device, it is configured to transmit the operating state detection information to the monitoring center at regular intervals. The call interval) is set to a relatively long interval depending on the number of air conditioners to be monitored, and urgent response may be required depending on the content of the detection information. Therefore, there is a concern that the above-mentioned emergency request cannot be met depending on the transmission interval of the driving state detection information. To avoid the above problem, the detection information transmission interval may be shortened, but there is a limit to the reduction of the detection information transmission interval when the number of air conditioners to be monitored is large.

The present invention has been made in view of the above circumstances, and remote monitoring of a GHP type air conditioner capable of responding to an emergency response request such as a case where the detection information is abnormality information indicating an abnormality of the equipment. An object is to provide a device.

[0006]

The invention according to claim 1 is GH
GHP type that detects the operating state of the P type air conditioner, transmits the detected operating state detection information to a monitoring center via a communication line, and monitors the operating state of the air conditioner at the monitoring center A remote monitoring device for an air conditioner, which is characterized in that detection information output means is provided for transmitting abnormality information of the above-mentioned operating state detection information to the monitoring center side while giving priority to the normal information.

According to a second aspect of the present invention, in the first aspect, the detection information output means transmits the operation state detection information of a plurality of air conditioners, and each air conditioner identification information and the operation state of the air conditioner. When the combination information with the detection information is transmitted and the abnormality of the air conditioner is detected, the combination information of the identification information of the abnormal air conditioner and the abnormality information is combined with the identification number of another air conditioner and the normal information. The feature is that information is transmitted with priority.

According to a third aspect of the present invention, in the first or second aspect, the detection information output means is provided between the air conditioners or between the air conditioner group and the communication line. The invention of claim 4 is characterized in that, in claim 1 or 2, the operation control means of any one of the air conditioners functions as the detection information output means.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 9 are views for explaining a remote monitoring device for a GHP type air conditioner according to an embodiment of the present invention, FIG. 1 is a block diagram of a control system, FIG. 2 is a block diagram of an air conditioner, and FIG. 4 is a flow chart for explaining the calling operation, FIG. 4 is a time chart for explaining the calling operation, FIG. 5 is a time chart for acquiring the operating state detection information, and FIG. FIG. 7 is a diagram showing a method of counting the number of stoppages, FIG. 7 is a flowchart diagram for explaining the method of counting the engine operating time and the number of start / stoppages, and FIG. 8 is a block diagram showing a connection state of the monitoring monitor.
[Fig. 4] is a time chart diagram of simultaneous transmission of a monitoring adapter and a monitoring monitor.

First, in FIG. 1 and FIG. 2, 1 is a remote monitoring device, which is a plurality of GHP type air conditioners 2, 2, ...
And a monitoring center 3 that monitors the operating states of these two groups of air conditioners, and a monitoring adapter that transmits and receives information between the group of air conditioners 2 and the monitoring center 3 via a communication line 4 (upper detection information output Means) 5.

Each of the air conditioners 2 includes an outdoor unit 6 and
Indoor unit 7A consisting of one or more outdoor units 7
It is composed of The outdoor unit 6 is a water-cooled type 4
A drive source 8 including a cycle gas engine 11, an air conditioning unit 9 including compressors 10a and 10a driven by the drive source 8, and various sensors for detecting the operating states of the drive source 8 and the air conditioning unit 9 It includes groups 16 and 17, a group of various actuators 18, and a CPU (control unit) 19 that controls the operations of these groups.

In the engine 11, the air sucked from the intake passage 13a through the air cleaner 13b and the fuel gas supplied from the gas cylinder 14a through the gas passage 14b are mixed in the gas mixer 13c, sucked and burned. The exhaust gas is discharged into the atmosphere through the exhaust passage 30. In addition, 14c and 14d are two gas cutoff valves, and 14e.
Is a pressure reducing valve (sero governor), and 14f is a gas amount control valve. In addition, the oil pan of the above engine has an oil tank
The lubricating oil in 5a is supplied by the oil pump 18i.

Further, the engine 11 is provided with a cooling water circuit 12, and the cooling water circuit 12 supplies cooling water to an exhaust gas heat exchanger 12b provided in the middle of an exhaust passage 30 of the engine by a water pump 18h. , Cooling jacket 12c of engine 11, thermo valve 12d, linear three-way valve 12
e, the radiator 12i is configured to circulate. 12g is a cooling water supply tank, and 12h is a check valve for preventing backflow to the tank 12g.

When the temperature of the cooling water is, for example, 60 ° C. or lower, the thermo valve 12d bypasses the entire cooling water to the water pump 18h side, and when the temperature exceeds 60 ° C., the bypass amount is reduced, and when the cooling water temperature is 75 ° C. or higher, the bypass is performed. The quantity is zero. Further, the linear three-way valve 12e mainly causes cooling water to flow to the heat exchange passage 12f side of the accumulator 10c side of the refrigerant circuit 10 described later during the heating operation, and to the radiator 12i during the cooling operation.
Run to the side. It should be noted that even during the cooling operation, the heat may be supplied to the heat exchange passage 12f side to improve efficiency.

The air conditioning unit 9 includes the compressor 10
Refrigerant such as freon gas or defreon gas that has been pressurized at a, 10a is circulated through the refrigerant circuit 10 through the outdoor heat exchanger (outdoor unit) 10d and the plurality of indoor units 7 of the indoor unit 7A. Is configured.

During the heating operation, the refrigerant circuit 10 supplies the refrigerant pressurized by the compressor 10a to the three indoor units 7 through the oil separator 10b and the four-way valve 18g, as shown in FIG. Expansion valve 7b through the indoor heat exchanger 7a of
The refrigerant discharged from the heat exchange passage 10 in the accumulator 10c.
The refrigerant is supplied to the outdoor units 10d, 10d through c ', and the refrigerant passing through the outdoor heat exchanger 10d is returned to the compressor 10a through the four-way valve 18g and the accumulator 10c.

In FIGS. 1 and 2, a sensor group 16 is a sensor group for detecting an operating state on the drive source 8 side, 16a is a gas leak detection sensor, and 16b is a lubricating oil surface height in the oil tank 15a. 16c is an oil level sensor for detecting the level of lubricating oil in the oil pan of the engine 11, 16d is an oil deterioration sensor for detecting the degree of deterioration of lubricating oil, and 16e is the engine 11 described above. , An engine temperature sensor disposed in the cooling jacket 12c of the engine, 16f is an engine speed sensor,
Reference numeral 16g is a cooling water level sensor for detecting the water surface height in the cooling water supply tank 12g, 16h is a timer, and 16i is a sensor for detecting ON / OFF of the main switch.

The sensor group 17 is a sensor group for detecting the operating state of the air conditioning unit 9 side, 17a is an outside air temperature sensor, 17b and 17c are a high pressure side pressure sensor and a low pressure side pressure sensor of the refrigerant circuit 10, respectively. 17d, 17e
Are high position sensors and low position sensors of the accumulator 10c, respectively. In addition, as a sensor group for obtaining the operating state information of the air conditioning unit 9, a high pressure side refrigerant temperature sensor, a low pressure side refrigerant temperature sensor, a temperature sensor of the compressor 10a, a drive source 8
Among them, especially the room temperature sensor of the engine room which houses the water-cooled 4-cycle engine 1 is arranged, and the detection data is inputted to the CPU 19.

In the actuator group 18, 18
a is a starter motor for the engine 11, 18b is a throttle valve arranged on the downstream side of the mixer in the intake passage 13a, 18c is an outdoor fan for cooling the outdoor heat exchanger 10d, 18d is a cumulative operating time display circuit, and 18e is A cumulative engine start / stop frequency display circuit, 18f is an ignition circuit, and 18g, 18h, and 18i are the four-way valve of the refrigerant circuit 10, the water pump of the cooling water circuit 12, and the lubricating oil supply oil pump, respectively, as described above. The gas shutoff valves 14c, 14
The operation of the d and gas amount adjusting valve 14f is also controlled by the CPU 19.

Further, the CPU 19 functions as operation control means for outputting an operation control signal to the various actuator groups 18 based on the operation state detection information (detection signal) input from the various sensor groups 16 and 17. . Further, each indoor unit 7 also has a CPU (not shown) built-in, and indoor temperature data from an indoor temperature sensor (not shown), ON / OFF input from a remote controller, desired indoor temperature, automatic operation ON / OFF, desired indoor fan. And the desired indoor fan capacity and other data are received, and the desired indoor temperature and automatic operation ON or OFF data are transferred to the CPU 19. When the automatic operation is off, the CPU on the indoor unit 7 side faces the direction of the indoor fan,
In addition to setting and controlling the rotation speed of the indoor fan, the CPU 1
Based on the operation command from 9, the opening degree of the expansion valve 7b which is the actuator group on the indoor unit 7 side is controlled, and the rotation speed of the indoor fan is controlled when the automatic operation is turned on. The CPUs 19 of the air conditioners 2, 2, ... Are connected to the communication bus 2 via the communication interface circuit 19a.
0 is connected in series, and the monitoring adapter 5 is connected between the group of air conditioners 2 and the communication line 4.

The CPU 19 is a group of the various sensors 1 described above.
6 and 17 reads the operating state detection information of the air conditioner 2 and controls the operation of each actuator group 18 and the actuator group on the indoor unit 7 side based on the control program in the memory, and the CPU of the monitoring adapter 5
Transmitting driving state detection information based on the request from 5a,
The CPU 5a of the monitoring adapter 5 transmits the operating state detection information as it is or a predetermined calculation value calculated based on the detection information to the monitoring center 5 regularly or irregularly. As will be described later, regular transmission is defined as a regular call, and irregular transmission is sent only when each of the prescribed cases is satisfied, and abnormal transmission that is a transmission in an abnormal state. There is a call.

The operating state detection information is classified into normal information and abnormality information. Typical information includes engine temperature,
Engine operating status information such as engine speed and lubricating oil level, air-conditioning unit operating status information indicating operating status of refrigerant circuit devices, etc., special monitoring of cumulative engine operating time, cumulative engine speed, cumulative engine start / stop, etc. Information and are included. It should be noted that the cumulative engine start / stop count is 1 when the engine rotation speed changes from less than a predetermined rotation speed to above.
It is the integrated value to be added.

Among the engine operating state information, the abnormal temperature information includes the engine temperature indicating the overheat state, the amount of lubricating oil below the minimum level, the operating state information of the air conditioning unit 9, the high pressure side, and the like. The high pressure side refrigerant temperature, the low pressure side pressure, the low pressure side refrigerant temperature, the compressor temperature, the engine room temperature and the like, and the derailment information of any of the sensor groups 16 and 17 and the like, which includes information that requires an emergency response, will be described later. As described above, the monitoring adapter 5 makes a determination based on a preset threshold value or an arithmetic expression.

The CPU 19 of each air conditioner 2 may be configured to determine whether or not an abnormality has occurred based on the detection information from the sensor groups 16 and 17 of the air conditioner.

Here, as shown in FIG. 5, the monitoring adapter 5 periodically sends all the air conditioners (in FIG. 5, GHP).
The CPU 19 of each air conditioner 2 responds to the CPU 19 of each of the air conditioners 2 at a predetermined timing and sends an identification number ( (# 1 etc.) and the driving state detection information is transmitted. In this case, as shown in the right part of FIG. 5, the inquiry signal is transmitted to the air conditioner targeted by the monitoring adapter 5 by individual communication,
Only the target air conditioner may respond.

Then, the monitoring adapter 5 periodically transmits the acquired operation status detection information to the monitoring center 3 in sequence with the identification number, and the monitoring center 3 stores the operation status of each air conditioner, and if necessary, It is displayed on a display (CRT) or output to a printer. The result is the agency that regularly manages each air conditioner from the monitoring center 3,
It is sent to the dealer by mail, facsimile or personal computer communication. At least one of the following cumulative engine operating time, cumulative engine speed, and cumulative engine start / stop change is sent to the agency or the like that manages the above along with other information at this time and used for maintenance of each air conditioner. .

In this way, the CPU 19 of each air conditioner 2 sends the operating condition detection information of each air conditioner together with the identification number to the monitoring adapter 5, and the adapter 5 monitors the operating condition detection information of each air conditioner together with the identification number. Since the data is transmitted to the center 3, one monitoring adapter 5 can simultaneously monitor a plurality of air conditioners 2, 2 ,. Further, the communication system (signal voltage, frequency of pulse signal, signal code, etc., the same applies hereinafter) performed between the monitoring adapter 5 and each air conditioner 2 via the communication bus 20, the monitoring adapter 5 and the monitoring center 3 The communication methods performed via the communication line 4 may be different. As a result, when the monitoring adapter 3 and the air conditioner group connected thereto are used as one monitoring target unit, when the monitoring center 3 monitors a plurality of monitoring target units, each monitoring target unit adopts its own communication method. Is possible,
When performing remote monitoring by the monitoring center 3, it is not necessary to modify the existing software for changing the signal system of the air conditioner 2.

As shown in FIG. 4, the normal information among the above-mentioned operating state detection information is predetermined information based on time-based periodic transmission (hereinafter abbreviated as periodic call) or a program. Although it is reported by irregular transmission (hereinafter, abbreviated as ordinary irregular call) that is transmitted only when the above conditions are satisfied, the above-mentioned abnormal information is the irregular call that takes precedence over the regular call and the regular irregular call. Notification is made by transmission (hereinafter, abbreviated as abnormal call). That is, as shown in the figure, when there is no abnormal call, regular call or non-regular call is made, but when abnormal call is made, the interval of regular call is shifted or normal regular call is made. By interrupting, the priority of abnormal call is increased.

The above-mentioned regular call, normal irregular call and abnormal call will be described in more detail with reference to the flowchart of FIG. First, an inquiry signal is sent from the monitoring adapter 5 to the CPUs 19 of all the air conditioners 2 by broadcast from the communication bus 20 through the communication interface 19a, and an identification number and an operation state detection signal are sent in response from each CPU 19. (Step S1). Then, it is determined based on the response information from each air conditioner 2 whether or not an abnormality has occurred, for example, whether the engine temperature is a predetermined value or higher, or the lubricating oil level is a predetermined value or lower (step S2).

If it is determined that an abnormality has occurred, detailed abnormality data is requested to the air conditioner through individual communication (step S3), and the response information to the request indicates that it is actually continuing (occurring). ), It is judged that there is an abnormality,
Detailed abnormality data is stored in the abnormality history (step S
4,5).

If there is unreported abnormality information in the abnormality history, the abnormal call processing is immediately performed (step S).
6, 7). When there is no unreported abnormality information in the abnormality history in step S6, the normal call processing is performed after waiting for the regular call request or the normal irregular call request (steps S8 and S7). When an abnormality occurs, each air conditioner 6 immediately throttles the throttle valve opening 18b to reduce the engine speed change, stops the engine as necessary, and at the same time, the abnormality warning light or the remote controller on the indoor unit 7 side. The details of the error are displayed on the display. On the other hand, when the monitoring center 3 receives the abnormality information, the abnormality content and other operating state detection information are transmitted to agents and dealers by telephone, facsimile or personal computer communication, and utilized for service maintenance activities.

As described above, in the monitoring adapter 5, the operating state detection information from each air conditioner is notified to the monitoring center 3 by a regular call, and when an abnormality is detected from the operating state detection information, Abnormal information is immediately reported to the monitoring center 3 without waiting for regular or irregular calls, so it is possible to reliably handle urgent maintenance such as engine overheat, lack of lubricating oil, and simply call. There is also no problem of increased communication load such as when the interval is narrowed.

Here, the monitoring adapter 5 obtains one or more of the cumulative engine operating time, the cumulative engine rotational frequency, and the cumulative engine start / stop frequency information from the CPU 19 of each air conditioner, and the monitoring center Send to 3. In this case, when the information from the air conditioner indicates the cumulative engine operating time, the cumulative engine rotation number, and the cumulative engine start / stop number, the information is transmitted to the monitoring center 3 as it is, but not such a cumulative value. In the case of mere engine speed information, etc., one or more of the cumulative engine operating time, the cumulative engine speed, and the cumulative engine start / stop count are calculated in the following manner, and the calculated value is sent to the monitoring center 3. Send.

First, as shown in FIG. 6, the cumulative engine operating time is obtained by reading the engine rotational speed, the value of which is larger than the rotational speed R0 of the starting cell motor 18a, and when the throttle valve 18b is fully closed. It can be obtained by accumulating a time that is a predetermined value Rrpm smaller than the number R1 and is, for example, 200, 250, or 300 rpm or more as the engine operating time.

As for the cumulative engine start / stop count, the engine speed is read, and when the value changes from the state of less than Rrpm to the above state, the start / stop count is incremented by 1 assuming that the engine has started / stopped once. Required by

Furthermore, the cumulative number of engine revolutions is obtained by integrating the number of engine revolutions obtained from the engine revolution speed and the duration of the revolution speed obtained by the timer 16h.

A method of obtaining the cumulative engine operating time and the cumulative engine start / stop count will be described in more detail with reference to the flowchart of FIG. It is determined whether or not the air conditioner for which information is to be acquired is a model equipped with a counter for cumulative operating time and cumulative start / stop times (step S11). Inquiry signals of the total operating time and the total number of starts and stops are sent to
These pieces of information are acquired (step S20), and at the call origination timing, a call origination process for transmitting the accumulated engine operating time and accumulated engine start / stop frequency information to the monitoring center 3 is performed (steps S18, 19).

In step S11, if the target air conditioner is a model that does not include the counter, the engine rotation speed information is acquired from the air conditioner (step S12), and the engine rotation speed is the predetermined rotation speed Rrpm.
The cumulative engine operating time is obtained by adding the time exceeding the above as the engine operating time to the previous engine operating time (steps S13, 14).

At the time when the engine speed becomes Rrpm or more, 1 is added to the previous engine start / stop count at the time when it is less than Rrpm to obtain the cumulative engine start / stop count at the present time (step S15-1
7). Then, at the calling timing, a calling process is performed to transmit the calculated engine operating time and cumulative engine start / stop frequency information to the monitoring center 3 (step S).
18, 19).

As described above, when the target air conditioner is a model that cannot obtain the cumulative engine operating time and the cumulative engine start / stop count, the monitoring adapter 5 calculates the cumulative engine operating time based on the engine speed. Since the calculation is performed, the total engine operating time and the total number of engine starts / stops can be obtained regardless of the presence or absence of the counting ability such as the operating time of the air conditioner side, and the maintenance time can be easily grasped.

In the above embodiment, the monitoring adapter 5 is
Calling processing is performed for each air conditioner group based on the stored program, normal information or abnormality information is fetched, and calling processing is performed for the monitoring center 3 while the monitoring center 3 is in a receivable state. The normal information or the abnormal information is transmitted with priority over the normal information. That is, when the calling process between each air conditioner group and the monitoring adapter 5, and the monitoring adapter 5, the monitoring monitor 3, and the calling process are not synchronized, the information from each air conditioning device group is temporarily stored. I have to.

It should be noted that the monitoring center 3 may perform a calling process on each of the air conditioner groups only for the information to be monitored by the monitoring center 3. In this case, the monitoring adapter 5 controls only the conversion of the communication method.

A monitor connection terminal 19c is connected to the CPU 19 of each air conditioner via a communication interface 19b. A monitor monitor 21 is connected to the monitor connection terminal 19c as shown in FIGS. It is connectable. Reference numeral 22 in FIG. 8 is an automatic gas amount meter reading unit that obtains the fuel gas consumption amount and transmits it to the monitoring center 3. In FIG. 8, the monitoring adapter 5 and each outdoor unit are connected in series with the communication lines 20a, 20b, 20c, ...
Are linked by The communication lines 20a and 20b are connected inside the outdoor unit 6 via an interface circuit, a CPU, and another interface circuit. The same applies to the communication lines 20b and 20c. In this case, the communication line 20
It is also possible to adopt a different communication method for each of a, 20b, and 20c.

The monitoring monitor 21 is connected to the monitor connection terminal 19c of any one of the air conditioners so that the operating state detection information of all the air conditioners 2 can be detected by the CRT 21.
It can be displayed in sequence on b. In this case, the CPU 21a of the monitoring monitor 21 controls the CP of all the air conditioners 2.
An inquiry signal requesting acquisition of operating state detection information is sent to U19 by broadcast or individually, and the CP of each air conditioner is sent.
The engine operating state detection information, the air conditioning unit operating state detection information, etc. are acquired from U19 and displayed on the CRT 21b.
Even one monitoring monitor 21 can inspect a plurality of air conditioners. A laptop computer may be used as the monitor 21.

Here, if the monitor 21 and the monitor adapter 5 simultaneously transmit the above-mentioned inquiry signal, data collision occurs. The processing in this case is performed as shown in FIG. For example, when an inquiry signal is transmitted from the monitor monitor 21 to GHP # 2 and from the monitor adapter 5 to GHP # 3 at the same time, the monitor adapter 5 detects a data collision, shifts the timing, and again sends the inquiry signal to GHP # 3. Even if there is data collision due to transmission, GHP #
Responses from 2 and 3 are possible. That is, the monitoring adapter 5
Functions as a data collision detection means and a retransmission means.

As described above, by connecting the monitoring monitor 21 to any of the air conditioners, the operating states of all the air conditioners can be displayed and monitored at once, and one monitoring monitor is provided for each air conditioner. It is easier to monitor as compared to a case where the units are reconnected to display the operating state, and work such as trial run, trouble response, and maintenance are easy.

Further, in this case, when the monitor monitor 21 and the monitor adapter 5 simultaneously transmit, the monitor adapter 5
Since the side detects the data collision and shifts the timing and transmits again, the monitoring adapter 5 and the monitoring monitor 2
The functions of 1 and 1 can be performed at the same time, and simultaneous connection is possible.

In the above embodiment, the monitoring adapter 5 is provided between the group of air conditioners 2 and the communication line 4, but the monitoring adapter 5 can of course be provided between any of the air conditioners 2, 2. Is. In this case, it is preferable that the communication lines 20a, 20b, 20c, ... Be one communication bus 20 and the communication bus 20 and each outdoor unit 6 be connected, as in the embodiment of FIG. The communication method between the monitor 21 and the monitor adapter 5 and the communication method between the monitor adapter 5 and each outdoor unit 6 can be different, but at least the signal voltage must be common. It should be noted that the signals of the monitor monitor 21 and the CPU 19 may be implemented via the communication interface 19a. In this case, the communication interface 19b may be unnecessary, and the communication bus 20 is provided with a monitor connection terminal. This monitor connection terminal is 19'c.

In the above-described embodiment, the example in which the monitoring adapter 5 is provided separately and independently has been described. However, the following functions of this monitoring adapter 5 to any one of the air conditioners, for example, FIG.
The CPU 19 of the outdoor unit 6 of the specific air conditioner 2'close to the automatic gas amount meter reading unit 22 of 0 can be provided, and in this case, the monitoring adapter itself becomes unnecessary. In FIG. 10, 101 is a CPU for operation control of the indoor unit 7, 102 is a sensor group, 103 is an actuator group, and 104 to 106 are communication interfaces.
The remote controller 201a connects all of the plurality of indoor units 7, 7, 7 connected to one outdoor unit 6 to the communication bus 2
The operation control is possible via 00. The remote controller 201b enables operation control of only the indoor unit 7 to be controlled. Reference numeral 202 denotes an operation control switch provided directly on the indoor unit 7.

Inquiry information requesting the acquisition of the operating condition detection information is sent to each air conditioner by the specific CPU 19
From the air conditioner, and the response information from each air conditioner is transmitted based on a periodic call request from the monitoring center 3.

When the occurrence of the above-mentioned abnormality is confirmed from the response information, the abnormality detailed data is requested to the CPU of the air conditioner having the abnormality, and it is judged from the detailed data that the abnormality is occurring. In case of failure, the abnormal information is immediately transmitted to the monitoring center 3 without waiting for a regular call.

If the air conditioner to be monitored is a model that cannot detect the cumulative engine operating time, the cumulative engine start / stop count, and the cumulative engine rotational speed, the cumulative engine operating time is calculated based on the engine rotational speed of the air conditioner.
The total number of times of engine start / stop and the total number of times of engine rotation are calculated, and the calculated values are transmitted to the monitoring center at the time of regular call or when the predetermined value is reached.

In the above description, the communication between the monitoring center 3 and the specific air conditioner 2'is an embodiment based on the periodical call request being issued from the monitoring center 3, but the following ' You can ′ The CPU 19 of the specific outdoor unit 6 is requested to make a regular call to each outdoor unit, and is allowed to accept the normal irregular call and abnormal call from each outdoor unit, and perform the call processing (reception) to the monitoring unit. Inquire about availability and make outgoing calls. In the above embodiment or ′,
A communication current for calling processing to the monitoring unit and a signal current for calling processing between the CPU 19 of the specific outdoor unit 6 and the CPUs 19 of other outdoor units 6 flow through the communication bus. Therefore, of the communication methods for both call processing, only the signal voltage is set to be common. The specific outdoor unit 6 and the automatic gas amount meter reading unit 22
It is possible to use a different communication system including the voltage for the communication system connecting the communication bus connecting the above and the communication bus connecting the specific outdoor unit 6 and each outdoor unit 6. Further, the communication method between the outdoor unit 6 and each indoor unit 7 using the communication bus 200 and the communication method between the CPU 19 of the specific outdoor unit 6 and each outdoor unit can be made common. this is,
The same applies when the monitoring adapter 5 is used, and the communication method on the communication bus 200 and the communication method on the communication bus 20 can be made common.

[0054]

As described above, according to the invention of claim 1,
An abnormal condition that requires urgent response, such as engine overheat or lack of lubricating oil, is provided because detection information output means is provided that sends abnormal information in the operating status detection information to the monitoring center side with priority given to normal information. If an error occurs, the abnormality information is immediately transmitted to the monitoring center side without waiting for a regular call, which has the effect of preventing damage to the air conditioner due to transmission delay. The communication load can be reduced as compared with the case where the call interval is reduced.

According to the second aspect of the present invention, when the abnormality of the air conditioning system is detected, the combination information of the identification information of the abnormal air conditioning system and the abnormality information is used as the identification number of the other air conditioning system and the normal information. Since priority is given to the combination information and the information is transmitted, only one detection information output means is required, and even if there are a plurality of air conditioners to be monitored, there is an effect that priority delivery of abnormality information can be realized at low cost.

According to the third aspect of the invention, since independent detection information output means is provided between the air conditioners or between the air conditioner group and the communication line, each air conditioner itself is the same. It is sufficient that the control means of the configuration is provided, and there is an effect that the monitoring by the single detection information output means of the plurality of air conditioners can be realized with a simple configuration.

Further, according to the invention of claim 4, since the function of the detection information output means is provided in the operation state control means (CPU) of any of the air conditioners, a separate and independent detection information output means becomes unnecessary. Therefore, there is an effect that the equipment cost can be reduced.

[Brief description of drawings]

FIG. 1 is a block diagram of a control system of a remote monitoring device for a GHP type air conditioner according to an embodiment of the present invention.

FIG. 2 is a block diagram of an air conditioner of the apparatus of the above embodiment.

FIG. 3 is a flow chart for explaining a calling operation of the apparatus of the above embodiment.

FIG. 4 is a time chart diagram for explaining a calling operation of the apparatus of the above embodiment.

FIG. 5 is a time chart diagram at the time of acquiring the operating state detection information of the above-described embodiment device.

FIG. 6 is a diagram for explaining a method of counting the engine operating time and the number of times of starting / stopping of the embodiment apparatus.

FIG. 7 is a flow chart diagram for explaining a method of counting the engine operating time and the number of times of starting and stopping of the apparatus of the above embodiment.

FIG. 8 is a block diagram showing a monitoring monitor connection state of the apparatus of the embodiment.

FIG. 9 is a time chart diagram for explaining an operation of the monitoring adapter and the monitoring monitor of the apparatus of the above embodiment during simultaneous transmission.

FIG. 10 is a block diagram of a modified example in which the air conditioning device side is provided with the monitoring adapter function in the above embodiment.

[Explanation of symbols]

1 Remote Monitoring Device 2 GHP Air Conditioner 3 Monitoring Center 4 Communication Line 5 Monitoring Adapter (Detection Information Output Means) 19 Air Conditioner CPU (Control Means Having Detection Information Output Means)

Claims (4)

[Claims] 1. A gas engine heat pump (hereinafter, GH
The operating condition of the air conditioner (abbreviated as P) is detected, and the detected operating condition detection information is transmitted to a monitoring center via a communication line, and the operating condition of the air conditioner is monitored at the monitoring center. In the remote monitoring device for the GHP type air conditioner, the detection information output means is provided for transmitting the abnormality information of the operation state detection information to the normal information and transmitting the abnormal information from the air conditioner side to the monitoring center side. The remote monitoring device of the characteristic GHP type air conditioner. 2. The detection information output means according to claim 1, wherein the detection information output means transmits operation state detection information of a plurality of air conditioners, and the combination of each air conditioner identification information and the operation state detection information of the air conditioners. When the information is transmitted and the abnormality of the air conditioner is detected, the combination information of the identification information of the abnormal air conditioner and the abnormality information is given priority over the combination information of the identification information of the other air conditioners and the normal information. A remote monitoring device for a GHP type air conditioner characterized by transmitting. 3. The GH according to claim 1 or 2, wherein the detection information output means is provided between the air conditioners or between the air conditioner group and the communication line.
Remote monitoring device for P type air conditioner. 4. The remote monitoring device for a GHP air conditioner according to claim 1, wherein the operation control means of either air conditioner fulfills the function of the detection information output means.