JP2001021248A - Centralized control device for showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform reliable and easy monitoring work on the maintenance manager side when a plurality of showcases are collectively controlled. SOLUTION: This centralized control device comprises a main control device 3 installed at a shop and collecting data from each show case; and a remove control device 1 installed on the maintenance manager side. The main control device 3 and the remote control device 1 transmit and receive data through a communication circuit. The main control device 3 transmits data on the collected operation state of each show case as daily report data to the remote control device 1 at least one per day and the remote control device 1 preserves received daily report data and displays and outputs the data on a display.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centralized control device for showcases and the like for collectively managing the operating states of a plurality of showcases and the like.

[0002]

2. Description of the Related Art In a store such as a supermarket or a convenience store, a plurality of showcases and refrigerators are installed. Conventionally, each showcase is controlled by a control device including a temperature controller and a defrosting timer. At present, it is controlled individually. Therefore, various setting operations such as the temperature of the showcase and the like and the defrosting time must be individually performed at the place where the showcase and the like are installed. Therefore, when the setting is changed depending on the season or weather, the operation becomes extremely complicated.

[0003] In addition, in order to grasp the operating conditions such as various set values and the temperature of the showcase or the like, it is necessary to go to a place where the showcase or the like is installed and to individually check the operating conditions. Data can not be easily grasped, and even if an abnormal situation occurs in a showcase or the like and an alarm is issued, the related alarm is performed in each individual showcase and the like, and a large number of showcases and the like are There is a problem that it is not possible to easily grasp which showcase the alarm is generated in the store where the store is installed.

[0004] Therefore, for example, Japanese Patent Application Laid-Open No. Hei 7-114657.
In the official gazette (F25D11 / 00), a control device of each showcase is connected to a main control device (or a central management device formed of a personal computer) configured by a microcomputer through a communication line, and various setting operations of each showcase are performed. The main control device or the central management device performs the operation, and data relating to the operating status and alarm of the showcase is collected and managed collectively by the main control device or the central management device.

[0005] Further, when a failure such as abnormally high or abnormally low temperature occurs in each showcase or the like, data relating to those alarms is also collected by the main control device, transferred to the central control device, and then transmitted via the public line. , And sent to a computer of an external maintenance company (maintenance manager).

[0006]

By the way, in order to grasp the operating status of each showcase in this kind of maintenance company, a clerk operates a computer to poll the main control device or the like at the store, and to store data. Since the transmission method was used, the monitoring work was complicated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional technical problem, and when a plurality of showcases and the like are collectively managed, monitoring work on a maintenance manager side can be performed reliably and easily. It is an object of the present invention to provide a centralized management device for a showcase or the like that can be performed at a time.

[0008]

That is, the centralized control device of the present invention collectively manages the operating state of a plurality of showcases and the like, and this centralized control device is installed in a store. It consists of a store-side management unit that collects data from each showcase, etc., and a maintenance-side management unit that is installed on the maintenance manager side, and the store-side management unit and the maintenance-side management unit transmit and receive data via a communication line. The store management unit transmits and receives the data as the daily report data to the maintenance management unit at least once a day regarding the operating state of each collected showcase and the like, and the maintenance management unit receives the data. It is characterized in that the daily report data is stored and displayed on a display means.

According to the present invention, a store-side management means installed in a store and collecting data from each showcase or the like;
In a centralized management device constructed from maintenance side management means installed on the maintenance manager side, the store side management means and the maintenance side management means exchange data via a communication line, and the store side management means In addition to transmitting the data as daily report data to the maintenance-side management means at least once a day regarding the operating state of each showcase, etc., the maintenance-side management means stores the received daily report data and outputs the data to the display means. The operating state of each showcase or the like installed in the store is automatically transmitted as a daily report from the store side management means to the maintenance side management means on the maintenance manager side, and can be displayed by the maintenance side management means. As a result, it becomes possible to reliably and extremely easily monitor the operation state of a showcase or the like.

A centralized management apparatus according to a second aspect of the present invention is characterized in that, in addition to the above invention, the maintenance side management means includes a printing means, and prints out the daily report data received from the store side management means by the printing means. I do.

According to the second aspect of the present invention, in addition to the above, the maintenance-side management means includes a printing means, and the daily report data received from the store-side management means is printed out by the printing means. This makes it easier to confirm and judge.

According to a third aspect of the present invention, in addition to the above-described invention, the maintenance-side management means determines an average value, a minimum value, a maximum value, and the like of the measured values from the daily report data received from the store-side management means. It is characterized in that it is calculated, displayed and / or printed out in a list format.

According to the third aspect of the present invention, in addition to the above, the maintenance-side management means calculates an average value, a minimum value, a maximum value, and the like of the measured values from the daily report data received from the store-side management means,
Display and / or printout in a list format allows the maintenance manager to more accurately and easily grasp and judge the operating state of the showcase and the like, thereby improving the maintenance management workability. .

According to a fourth aspect of the present invention, in addition to the third aspect, the average value, the minimum value, and the maximum value of the measured values do not include data during defrosting in a showcase or the like. The maintenance-side management means is characterized in that the total average value including the data during the defrosting is separately calculated, displayed and / or printed out.

According to the fourth aspect of the invention, in addition to the above, the average value, the minimum value, and the maximum value of the measured values do not include data during defrosting in a showcase or the like. Since the total average value including the data during defrosting is separately calculated and displayed and / or printed out, the value excluding special states such as showcases such as during defrosting and the value taking into account all situations Therefore, the maintenance manager can make a more accurate judgment by grasping the operating state of the showcase or the like as a whole or comparing them.

A centralized management device according to a fifth aspect of the present invention is characterized in that, in addition to the above inventions, the daily report data also includes data relating to an alarm.

Furthermore, according to the fifth aspect of the present invention, in addition to the above, the daily report data includes data relating to an alarm.
An abnormality has occurred in the showcase, etc., or
The fact that an abnormality has occurred can also be managed as a daily report.

[0018]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a system configuration diagram of the centralized management device of the present invention. The system of the centralized management device of the present invention
The main control device 3 (master controller constituting the store-side management means) and the terminal-side control device 6 which are installed in a store P such as a supermarket and are constituted by a microcomputer, and a maintenance company which performs maintenance management (becomes a maintenance manager) The management center M includes a remote management device (maintenance-side management means) 1 such as a personal computer. In this case, it is assumed that the maintenance company M has a maintenance management contract for the showcase SC of a plurality of stores (not shown) in addition to the store P.

The main controller 3 is provided in a security room or the like of the store P, and as shown in FIG. 2, a microcomputer 24 and ROMs 26 and R connected to the microcomputer 24.
It comprises an AM 27, an EEPROM 40, a transmission / reception means 29, an output control means 31, an input control means 32 and the like. The transmission / reception means 29 is constituted by a serial interface, and is connected to the terminal-side control device 6 via a communication line 33. The main controller 3 is configured so that up to 150 terminal-side controllers 6, that is, a showcase SC or the like can be connected.

The ROM 26 stores a communication protocol and a control program for the main controller 3 itself.
In 7, various data sent from the terminal-side control device 6, various data sent to the terminal-side control device 6, and control data of the main control device 3 itself (display data of the liquid crystal display unit 34) are stored. Showcase SC in EEPROM40
Various settings such as etc. and data on the installation state are saved,
It is retained even when the power is turned off.

The output control means 31 has an L of 5 inches, for example.
Liquid crystal display section 34 composed of ED display and buzzer 36
And a key switch 37, a DIP switch 38 and a slide switch 39 are connected to the input control means 32. The key switch 37 is a switch for performing various settings and display commands, and the DIP switch 38 is a switch for setting the connection state of the terminal-side control device 6. The slide switch 39 is a switch for performing settings related to lighting control of the showcase SC and the like and stopping at night.

Further, a terminal adapter 35 is connected to the microcomputer 24, and a public line (communication line; I
It is possible to exchange data with the remote management device 1 of the maintenance company M via the NS64 line) L.

Next, the terminal-side control device 6 is provided in each of the various showcases SC shown in FIG. 1 and a refrigerator (not shown) for supplying a refrigerant to the showcases SC, as shown in FIG. Computer 54
ROM56, RAM57, EEPROM5 connected to
0, transmission / reception means 58, output control means 59, and input control means 61. The transmission / reception means 58 is constituted by a serial interface, and is connected to the main controller 3 via the communication line 33.

The ROM 56 stores a communication protocol and a control program for the terminal-side control device 6 itself.
In M57, data relating to various operating conditions such as the showcase SC sent from the main control device 3 is stored. The EEPROM 50 stores setting data of various operating conditions such as the showcase SC set by the terminal-side control device 6, and is held even when the power is turned off. The output control means 59 is connected to a display means 62 for displaying an alarm and an actuator 63.

The actuator 63 is used in a showcase S
In the case of C, it means an expansion valve, a heater for defrosting, lighting, and the like, and a refrigerator means a compressor motor and the like. The input control means 61 includes a setting switch 64,
A sensor 66 for detecting the internal temperature of the showcase SC, the condensing pressure of the refrigerator, and the like is connected. The temperature data detected by the sensor 66 is also stored in the RAM 57. The setting switch 64 is used to set channel numbers from 1 to 30 assigned for the control of the terminal-side control device 6.

A plurality of showcases SC are connected to one refrigerator by pipe connection to form a group, and a refrigerant is supplied from a compressor of the refrigerator.

When the showcase SC or the like is installed, each terminal-side control device 6 is set to A to E by a setting switch 64.
By setting one of them to and one of 1 to 30, respectively, the channel number (for example, A01) of each terminal-side control device 6 is assigned and set.

On the other hand, the remote management device 1 is provided in a maintenance company M, as shown in FIG. 4, a microcomputer 77, a hard disk 78 connected to the microcomputer 77, a ROM 79, a RAM 8
1, a floppy disk drive 82, an output control means 84, an input control means 86, and the like.

In the hard disk 78, in addition to the control program of the remote management device 1 itself, various data including a warning sent from the main control device 3 of the store P are described in detail, and map information relating to the area where the store P is located. In addition, information on the current position of the traveling serviceman, information on the assignment in charge, and the like are stored, and further, the communication protocol and the like are also stored. Are also stored in advance.

A printer 88 as printing means and a display 89 as display means are connected to the output control means 84, and a keyboard 91 and a mouse 92 as input means are connected to the input control means 86. Further, a terminal adapter 93 is connected to the microcomputer 77, and the main control device 3 of the store P is connected to the public line L.
Further, data is transmitted and received by communication with a mobile terminal H (mobile phone, PHS phone, pager, handy terminal, etc.) and communication is performed with a traveling serviceman.
The communication with the service person is performed, for example, periodically, and is stored and updated on the hard disk 78 as the current position information.

The operation of each device having the above configuration will be described. First, the store-side device will be described. In the main controller 3, the key switch 37, the DIP switch 38
Each terminal-side control device 6 is controlled by the
Channel numbers (for example, A0
Operating conditions such as the showcase SC and the like can be set for each 1), such as a set temperature in the refrigerator, various alarms, various set values relating to defrosting, a management temperature, and the like.

Data relating to the operating conditions of the showcase SC and the like set by the main controller 3 are stored in the RAM 27 and the EEPROM 40 by the microcomputer 24, and transmitted and received by the transmission / reception means 29 to the terminal-side controller 6
Sent to.

These data are transmitted while being distinguished for each channel number. Also, the microcomputer 2 of the main control device 3 receives a request from the remote management device 1.
4 uploads the data set by the key switch 37 or the like to the remote management device 1 by the terminal adapter 35. The remote management device 1 can compare the data uploaded from the main control device 3 with the data set in the remote management device 1.

Next, in the terminal-side control device 6, the transmitting / receiving means 5
When the microcomputer 8 receives the data relating to the operating conditions addressed to its own channel number (01 to 30), the microcomputer 54 stores the data in the RAM 57. The microcomputer 54 compares the output of the sensor 66 relating to the internal temperature of the showcase SC with the internal setting temperature of the data relating to the operating conditions, and compares the output with the actuator 6.
The control unit controls the expansion valve and the compressor motor to control the internal temperature to the internal set temperature. In addition, the heater as the actuator 63 is controlled based on the data relating to the defrosting, the defrosting control of the showcase SC is executed, and the lighting of the illumination as the actuator 63 is controlled based on the data relating to the lighting control.

Data relating to the operating state such as the internal temperature in the showcase SC or the like is sequentially stored in the RAM 57 by the microcomputer 54 and updated. Further, when the internal temperature rises abnormally due to, for example, a failure of the expansion valve, and exceeds a set value relating to an alarm among the data sent from the main controller 3, the microcomputer 54 causes the display means 62 to display the showcase SC. And the like, and saves in the RAM 57 the information on the operation state, including the information on the alarm.

Microcomputer 24 of main controller 3
Is a maximum of 15 connected to itself for example once a minute
The polling is performed on the microcomputers 54 of the zero terminal-side control devices 6. When the microcomputer 54 of the terminal-side control device 6 is polled by the main control device 3, the data relating to the operating state stored in the RAM 57 together with its own channel number and sensor ID are transmitted from the transmission / reception means 58 to the main control device 3. I do.

The main control unit 3 receives and collects the data relating to the operation state by the transmission / reception means 29 and stores the data relating to the operation state of up to 150 units in the RAM 27 for each terminal side control unit 6, ie, for each channel. I do. The data on the operating state in the RAM 27 is similarly updated by transmitting the data on the operating state from the terminal-side control device 6 at the next polling.

The main controller 3 collects data on the operating state of each showcase SC and refrigerator from each terminal-side controller 6 in such a procedure. Microcomputer 2
4 is the temperature and EE in the refrigerator based on the data collected in the RAM 27.
The in-chamber set temperature stored in the PROM 40 is read out and displayed on the liquid crystal display section 34 at intervals of several seconds for each channel number. This temperature display can also be displayed graphically.

If the data relating to the operating state transmitted from the terminal-side control device 6 includes alarm information, the microcomputer 24 indicates to that effect and the data of the data containing the alarm information is included. The channel number of the showcase SC or the like, which is the source of the alarm, and the details of the abnormality that caused the alarm are displayed on the liquid crystal display unit 34, and the buzzer 36 is operated.

Further, the microcomputer 24 of the main control unit 3 transmits the data on the operating state of each showcase SC and the refrigerator collected from each terminal side control unit 6 as described above, for example, once a day (or twice a day). As described above, the remote management device 1 uses the terminal adapter 35 as the daily report data.
Send to The daily report data also includes data on a warning described later.

It is also possible to receive transmission of various data from the remote management device 1 by polling the microcomputer 24 of the main control device 3. Further, when the alarm information is included in the data on the driving state transmitted from the terminal-side control device 6, the microcomputer 24 of the main control device 3 determines whether or not the data is generated from the showcase SC or the like. In addition to the above-mentioned daily report, the terminal adapter 35 transmits the channel number, the content of the abnormality that caused the alarm (the content of the alarm (alarm content)), the current temperature and the set temperature in the refrigerator to the remote management device 1 by the terminal adapter 35 each time.

Then, the microcomputer 77 of the remote management device 1 communicates with the store P via the terminal adapter 93.
When the alarm data is received from the main control device 3, the alarm contents included in the alarm data are automatically displayed on the display 89, and based on the service person's assignment information stored in the hard disk 78, Then, via the terminal adapter 93, the store name (P), the contents of the alarm,
Transfer information such as what to do.

Next, the operation of the remote management device 1 when the daily report data is received will be described with reference to FIGS. As described above, the microcomputer 24 of the main control device 3 polls the microcomputer 54 of the maximum 150 terminal-side control devices 6 connected to itself once a minute to the remote management device 1 as described above. Various data on the obtained operating state is transmitted as daily report data from the main controller 3 via the terminal adapter 35.

The microcomputer 7 of the remote management device 1
7 receives the daily report data via the terminal adapter 93. In the daily report data, data relating to the driving state of the day, such as each showcase of the store P, is stored for each channel number assigned to each terminal-side control device 6,
The detection value obtained every minute of the sensor 66, the data of the actuator 63 (for example, ON / OFF signals of a compressor, a solenoid valve, a refrigerator, etc., a defrost synchronization signal, an O of a defrost heater)
N / OFF signal).

Upon receiving the daily report data, the microcomputer 77 of the remote management device 1 automatically or by a predetermined operation (switchable by setting) converts the daily report data into data for displaying a list as described below. Is created and displayed on the display 89. 5 and 6 show a window W displayed on the display 89 of the remote management device 1 when the daily report data is received.

In this case, on the display 89, regarding the daily report data of general equipment such as the showcase SC, the equipment name, channel number, discharge set temperature, discharge average temperature, discharge minimum (MIN) temperature, discharge maximum (MAX) The temperature, the maximum defrost temperature (MAX) temperature, the total average temperature, the operation rate of the device (solenoid valve), and the alarm content are displayed in a list format for each terminal-side control device 6 (see FIG. 5).

As for the refrigerator, the display 89
, Device name, channel number, average discharge temperature, minimum discharge (MIN) temperature, maximum discharge (MAX) temperature, average suction temperature, minimum suction (MIN) temperature, maximum suction (MA)
X) Temperature, average discharge pressure, minimum discharge (MIN) pressure, maximum discharge (MAX) pressure, average suction pressure, minimum suction (MI)
N) The pressure, the maximum suction pressure (MAX) pressure, the operation rate of the device, and the contents of the alarm are displayed in a list format for each terminal-side control device 6 (FIG. 6).

Average discharge temperature in showcase SC,
The minimum discharge temperature and the maximum discharge temperature are calculated based on the detection values of the temperature sensors 66 installed near the discharge ports of the respective showcases SC. As shown in FIG. 7, each of the calculated temperatures is calculated using the detected temperature during the cooling operation excluding the temperature at the time of defrosting the showcase SC and the detected temperature at the time of pull-down after defrosting.

Here, the judgment of the defrosting of the showcase SC is made when the defrosting synchronizing signal or the defrosting heater signal of the relay output data is ON. The pull-down is determined from when the solenoid valve is turned ON after the completion of the defrosting to when the first OFF signal of the solenoid valve is received. Therefore, each of the calculated temperatures is calculated by a detection value excluding a detection value from the start of defrosting to the reception of the first OFF signal of the solenoid valve after the end of defrosting.

The maximum defrost temperature in the showcase SC refers to the maximum temperature detected by the temperature sensor 66 installed in the cooler of the showcase SC during defrost. The total average temperature in the showcase SC is:
This is an average using the detection values of the temperature sensor 66 installed near the discharge port during the cooling operation, the defrosting operation, and the pull-down operation of the showcase SC.

Further, the operating ratio of the showcase SC is calculated by the ON / OFF signal of the solenoid valve,
It is calculated by the following equation.

Operating rate = (electromagnetic valve ON time / total operating time × 100) Further, the discharge set temperature, discharge average temperature, discharge minimum temperature, discharge maximum temperature, suction average temperature, suction minimum temperature, suction maximum temperature of the refrigerator. The average discharge pressure, the minimum discharge pressure, the maximum discharge pressure, the average suction pressure, the minimum suction pressure, and the maximum suction pressure are respectively determined by a temperature sensor 66 and a pressure sensor 66 attached to the refrigerant suction side or the refrigerant discharge side of the refrigerator, respectively. It is calculated from the detected data.

The latest contents of the alarm contents on that day are displayed on the display 89 as alarm data.

The daily report data and various data calculated therefrom are stored in the hard disk 78 or the floppy disk 82 by the microcomputer 77.

Here, when the print button in the window W shown in FIGS. 5 and 6 displayed on the display 89 is selected and determined by the mouse 92 or the like, the microcomputer 7
Reference numeral 7 prints out the data in the list format shown in FIGS.

As described above, the main control device 3 of each showcase SC or the like installed in the store P transmits the data on the operating state of each showcase SC or the like to the remote management device 1 via the communication line as daily report data. At least once, and the remote management device 1 saves the received daily report data and outputs it to the display 89.
The operation status of each showcase SC and the like installed in the store P is automatically transmitted from the main control device 3 to the remote management device 1 as a daily report and displayed, and the operation of monitoring the operation status of the showcase SC and the like is performed. Can be performed reliably and extremely easily.

Further, since the remote management device 1 is provided with the printer 88 and prints out the daily report data received from the main control device 3, it is easier to confirm and determine the operation state.

Further, the remote management device 1 is provided with each showcase S
The maintenance manager calculates the average value, minimum value, maximum value, etc. of the measured values in C and displays and prints out in a list format, so that the maintenance manager can more accurately and easily grasp the operating state of the showcase SC and the like. It is possible to make a judgment, and the maintenance management workability is improved.

Here, it is assumed that the average value, the minimum value, and the maximum value of the measured values do not include data during defrosting in the showcase SC or the like, and the remote management device 1 includes the data during defrosting. Since the total average value is separately calculated and displayed and / or printed out, from a value excluding a special state such as a showcase SC such as during defrosting and a value considering all situations,
The maintenance manager can make a more accurate judgment by grasping the operating state of the showcase SC or the like as a whole or by comparing them.

Further, since the daily report data includes data relating to an alarm, whether an abnormality has occurred in the showcase SC or the like, or that an abnormality has occurred can be managed as a daily report.

[0061]

As described above in detail, according to the present invention, a store-side management unit installed in a store and collecting data from each showcase and the like, and a maintenance-side management unit installed in a maintenance manager are provided. In the centralized management device constructed from the above, the store-side management means and the maintenance-side management means exchange data via a communication line, and the store-side management means reports the collected data on the operating state of each showcase etc. in a daily report. The data is sent to the maintenance management means at least once a day,
The maintenance side management means stores the received daily report data,
Since the display state is output to the display means, the operating state of each showcase or the like installed in the store is automatically transmitted as a daily report from the store side management means to the maintenance side management side of the maintenance manager, and the maintenance side management is performed. This makes it possible to perform the operation of monitoring the operating state of a showcase or the like reliably and extremely easily.

According to the second aspect of the present invention, in addition to the above, the maintenance-side management means includes a printing means, and the daily report data received from the store-side management means is printed out by the printing means. This makes it easier to check and determine the operating state.

According to the third aspect of the present invention, in addition to the above, the maintenance-side management means calculates an average value, a minimum value, a maximum value, and the like of the measured values from the daily report data received from the store-side management means, Display and / or printout in a list format allows the maintenance manager to more accurately and easily grasp and judge the operating state of the showcase and the like, thereby improving the maintenance management workability. .

According to the fourth aspect of the present invention, in addition to the above, the average value, the minimum value, and the maximum value of the measured values do not include data during defrosting in a showcase or the like. Since the total average value including the data during the defrosting is separately calculated and displayed and / or printed out, a value excluding a special state such as a showcase such as during the defrosting and all situations are taken into account. From the values, the maintenance manager can grasp the operating state of the showcase or the like as a whole, or make a more accurate judgment by comparing them.

Further, according to the fifth aspect of the present invention, in addition to the above, the daily report data includes data relating to an alarm.
An abnormality has occurred in the showcase, etc., or
The fact that an abnormality has occurred can also be managed as a daily report.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram of a centralized management device such as a showcase of the present invention.

FIG. 2 is a block diagram of an electric circuit of a main control device.

FIG. 3 is a block diagram of an electric circuit of the terminal-side control device.

FIG. 4 is a block diagram of an electric circuit of the remote management device.

FIG. 5 is a diagram showing a display state of a display of the remote management device.

FIG. 6 is a diagram showing a display state of a display of the remote management device.

FIG. 7 is a diagram showing a temperature change from the defrosting to the cooling operation of the showcase SC.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Remote management device 3 Main control device 6 Terminal side control device 24, 54, 77 Microcomputer 35, 93 Terminal adapter 78 Hard disk 88 Printer 89 Display L Public line M Maintenance company P Store SC Showcase W Window

Claims (5)

[Claims] 1. A centralized management device for collectively managing the operating state of a plurality of showcases and the like, wherein the centralized management device is installed in a store and stores management means for collecting data from each of the showcases and the like. And the maintenance side management means installed on the maintenance manager side, wherein the store side management means and the maintenance side management means exchange data via a communication line, and the store side management means collects data. While transmitting data on the operating state of each showcase etc. as daily report data at least once a day to the maintenance side management means, the maintenance side management means saves the received daily report data and displays it on a display means. A centralized management device such as a showcase for outputting. 2. The centralized management device for a showcase or the like according to claim 1, wherein the maintenance-side management unit includes a printing unit, and prints out the daily report data received from the store-side management unit by the printing unit. 3. The maintenance-side management means calculates an average value, a minimum value, a maximum value, and the like of measured values from daily report data received from the store-side management means, and displays and / or prints out in a list format. A centralized management device such as a showcase according to claim 1 or 2. 4. The average value, the minimum value, and the maximum value of the measured values shall not include data during defrosting in a showcase or the like, and the maintenance-side management means may calculate the total average including the data during defrosting. The centralized management device for a showcase or the like according to claim 3, wherein the value is separately calculated, displayed and / or printed out. 5. The daily report data includes data relating to a warning.
Or a centralized management device such as a showcase according to claim 4.