JP2000304336A - Air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To recover the state of an indoor unit before maintenance work quickly and easily after maintenance work. SOLUTION: In the air conditioning system 10 for controlling first and second air conditioners 11, 12, each comprising an outdoor unit 16 and indoor units 17, 18, 19, centrally through a central controller 15, the central controller is provided with a memory 28 for storing the state of a plurality of indoor units at an arbitrary time point and arranged to set each indoor unit in the state stored in the memory at other arbitrary time point.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning system for centrally controlling one or more air conditioners having a plurality of indoor units.

[0002]

2. Description of the Related Art For example, in an air conditioning system for a building or the like, one or a plurality of air conditioners having one or a plurality of outdoor units and a plurality of indoor units are centrally controlled by one central control device. An arrangement configured as such has been proposed.

In the air conditioning system as described above,
During maintenance work such as periodic inspections and repairs, the above-mentioned inspections and repairs are often performed with the air conditioner temporarily stopped for the purpose of preventing danger. After the completion of these inspections and repairs, the air conditioner may be operated by variously changing the temperature setting and the like to confirm the effects of the inspections and repairs.

Incidentally, the centralized control device is a status monitor device, which simply displays the operating or stopped status of the air conditioner or the status after the setting change. That is, the centralized control device cannot determine who is the subject of operation or stoppage of the air conditioner, or change of the setting.

[0005] Therefore, the worker who performs the maintenance work needs to restore the indoor unit of the air conditioner to the state before the maintenance work after the maintenance work is completed. It is necessary to record them individually.

[0006]

However, when there are hundreds of indoor units of the air conditioner in the air conditioning system, the state of all the indoor units is recorded before the maintenance work, and after the maintenance work, Returning all the indoor units to the state before the maintenance work is a task requiring a great deal of labor.

An object of the present invention has been made in view of the above circumstances, and provides an air conditioning system capable of quickly and easily restoring an indoor unit to a state before maintenance work after maintenance work. It is in.

[0008]

According to the first aspect of the present invention, an air conditioner including an outdoor unit and a plurality of indoor units is provided.
In an air conditioning system that performs centralized control by a centralized control device, the centralized control device has a storage device that can store a plurality of states of the indoor units at any time, and the indoor units at any other time. The apparatus can be set to a state stored in the storage device.

According to a second aspect of the present invention, in the first aspect of the present invention, the centralized control device includes an operation switch for storing a state of the plurality of indoor units in a storage device;
An operation switch for setting each indoor unit to a state stored in the storage device is provided.

The invention described in claim 1 or 2 has the following effects.

Since the centralized control device has a storage device capable of storing the states of the plurality of indoor units at any time, the operating states of the plurality of indoor units at that time are stored before the maintenance work of the air conditioner. It can be stored in the device. Further, since the central control device is configured so that each indoor unit can be set to a state stored in the storage device at any other time, each indoor unit after the maintenance work of the air conditioner is completed. The state before the maintenance work stored in the storage device can be set. From these, by the centralized control of the indoor units by the centralized control device, it is possible to quickly and easily restore the plurality of indoor units to the state before the maintenance operation after the maintenance operation.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a system diagram showing an embodiment of an air conditioning system according to the present invention.

The air conditioning system 10 shown in FIG.
A plurality of, for example, two first air conditioners 11 and second air conditioners 12 are respectively connected to the first communication adapter 21 and the second
The centralized control device 15 is configured to perform centralized control via the communication adapter 22.

The first air conditioner 11 and the second air conditioner 12 are connected to one outdoor unit 16 by, for example, three indoor units 1.
7, 18 and 19 are connected and configured by a refrigerant pipe (not shown).

The central control unit 15 is connected to a first communication adapter 21 and a second communication adapter 22 via a two-wire main communication line 20. The first communication adapter 21 is connected to the outdoor unit 16 and the indoor units 17, 1
8 and 19 are connected. Also, the second communication adapter 22
Is also connected to the outdoor unit 16 and the indoor units 17, 18 and 19 of the second air conditioner 12 via the sub communication line 24 of the two-wire system.

The sub communication line 23 transmits and receives air-conditioning control signals between the outdoor unit 16 of the first air conditioner 11 and the indoor units 17, 18 and 19, and the outdoor unit 16 and the indoor unit 17 , 18 and 19 exhibit an air conditioning function. Similarly, the sub-communication line 24 transmits and receives air conditioning control signals between the outdoor unit 16 of the second air conditioner 12 and the indoor units 17, 18, and 19, and these outdoor units 1
6 and the indoor units 17, 18 and 19 exhibit an air conditioning function.

The main communication line 20 transmits a central control signal from the central control device 15 to the first air conditioner 11 via the first communication adapter 21 and the second communication adapter 2
2 for transmitting and receiving to and from the second air conditioner 12 respectively. Further, the main communication line 20 transmits operating state data from the first air conditioner 11 via the first communication adapter 21 and from the second air conditioner 12 via the second communication adapter 22 to the central control device 15. To send to.

Here, the first communication adapter 21 and the second communication adapter 22 are connected to a signal transmitted / received to / from the central control device 15 by using the main communication line 20 and the first air conditioner 11 and the second air Sub communication line 2 with the harmony device 12
3 and 24 are devices that convert the communication format with signals transmitted and received using the respective devices.

The centralized control device 15 includes the operation display device 2
5, the centralized control of the first air conditioner 11 via the first communication adapter 21, the state of the first air conditioner 11 is monitored, and the second air conditioner 11 is controlled via the second communication adapter 22. The device 12 is controlled centrally, and the state of the second air conditioner 12 is monitored.

A remote controller 26 is connected to each of the indoor units 17, 18, 19 of the first air conditioner 11 and the second air conditioner 12. Indoor unit 1
7, 18 and 19 are operated or stopped, a set temperature is changed, and operation modes such as cooling and heating are switched by manual operation of the remote controller 26.

The centralized control unit 15 includes a CPU 2
7, the storage device 28 and the operation display device 25. In addition to the centralized control and monitoring function of the first air conditioner 11 and the second air conditioner 12, the first air conditioner 11 and the second It has a function of setting the indoor units 17, 18, and 19 of the air conditioner 12 to a state at an arbitrary time at any other time.

The function of setting the status of the indoor units 17, 18, and 19 by the central control device 15 will be described below.

The storage device 28 stores the states of the indoor units 17, 18 and 19 of the first air conditioner 11 and the second air conditioner 12 at any time (operating and stopped states, operating modes such as cooling and heating, (Set temperature, set air volume, etc.).

The CPU 27 includes the operation display device 2
5, when the operation switch 30 displayed as “state memory” is touch-operated on the operation screen 29 shown in FIG. 2, the indoor units of the first air conditioner 11 and the second air conditioner 12 are operated. The states at the time point (for example, before maintenance work of at least one of the first air conditioner 11 and the second air conditioner 12) of 17, 18, and 19 are as follows:
The information is stored in the storage device 28 for each of the indoor units 17, 18, and 19.

That is, when the operation switch 30 is touched, the CPU 27 determines that the state of the indoor unit shown in FIG. 3 is stored (step S1).
The state is stored in the storage device 28 for each of the 19 number numbers n.
(Steps S2, S3, S4). Next, C
The PU 27 determines whether or not the number n of the indoor units 17, 18, 19 is the maximum number of the indoor units 17, 18, 19 connected to the central control device 15 (step S5).
When it is determined that the maximum number has been reached, a message "memory completed" is displayed on the operation screen 29 (step S6).

On the operation screen 29 shown in FIG. 2, the operation switch 31 displayed as “state restoration” is operated, for example, after the maintenance work of at least one of the first air conditioner 11 and the second air conditioner 12. When a touch operation is performed, the CPU 27 stores the state of the indoor units 17, 18, and 19 of the first air conditioner 11 and the second air conditioner 12 in the state stored in the storage device 28 (for example, the first air conditioner 11 and a state before maintenance work of at least one of the second air conditioner 12).

That is, when the operation switch 31 is touch-operated, the CPU 27 determines that the state of the indoor unit shown in FIG. 3 is restored (step S7), and the indoor units 17, 18,
The states of the indoor units 17, 18, and 19 stored in the storage device 28 for each of the 19 unit numbers n
8 and 19, and these indoor units 17, 18, 1
The state of No. 9 is set to the state stored in the storage device 28. (Steps S8, S9, S10). Next, CPU2
7 determines whether or not the number n of the indoor units 17, 18, 19 is the maximum number of the indoor units 17, 18, 19 connected to the centralized control device 15 (step S11). When it is determined that it is a number, the operation screen 29
To display a message "restoration is completed" (step S12).

The reference numeral 32 in FIG.
During the operation of storing the states of 8 and 19 in the storage device 28, the stage of the storage operation is indicated, and the indoor units 17, 18, 19
Is set to the state stored in the storage device 28 (restoration)
During the operation, the indicator 32 indicates the stage of the setting operation. When all the indicators 32 are turned off, the storage operation or the setting operation is in the initial stage, and when all the indicators 32 are turned on, it indicates that the storage operation or the setting operation is completed.

Next, the operation will be described.

When a serviceman enters the site to perform a maintenance work such as a periodic inspection of the air conditioning system 10 or a failure repair, the indoor unit 17 of the first air conditioner 11 is set to a set temperature of 23 ° C. in a heating operation. And the indoor unit 18 of the first air conditioner 11 is stopped, and the indoor unit 19 of the first air conditioner 11
It is assumed that the indoor units 17, 18, and 19 of the second air conditioner 12 are at the set temperature of 20 ° C. in the heating operation.

First, the service person operates the central control device 15.
The operation screen 29 shown in FIG. 2 is displayed on the operation display device 25, and the operation switch 30 on the operation screen 29 is touch-operated. Then, the CPU 27 of the central control device 15 controls the indoor unit 1 of the first air conditioner 11 and the second air conditioner 12.
The states of 7, 18, and 19 are sequentially stored in the storage device 28,
When the storing operation is completed, a message “memory completed” is displayed on the operation screen 29.

Next, the service person operates all the indoor units 1
7, 18 and 19 are stopped, and the inspection and repair of the first air conditioner 11 and the second air conditioner 12 are executed. When these inspections and repairs are completed, all indoor units 17,
18 and 19 are set to desired conditions (for example, a set temperature of 20 ° C. in a heating operation) and operated, and each of the indoor units 17, 18,
Confirm the operation condition of No. 19. When the serviceman determines that the operation of each of the indoor units 17, 18, and 19 has no problem, the service person temporarily stops all the indoor units 17, 18, and 19 and ends the maintenance work.

Thereafter, the service person operates the central control device 1
The operation screen 29 described above is displayed on the operation display device 25, and the operation switch 31 on the operation screen 29 is touch-operated. Then, the CPU 27 of the central control device 15 stores the indoor unit 1 before the maintenance work stored in the storage device 28.
The states of 7, 18, and 19 are changed to the corresponding indoor units 17, 18,
19, and sets the indoor units 17, 18, and 19 to the state stored in the storage device 28.

That is, the indoor unit 1 of the first air conditioner 11
7 is set to a set temperature of 23 ° C. in the heating operation, the indoor unit 18 of the first air conditioner 11 is stopped, and the indoor unit 19 of the first air conditioner 11 is set to the set temperature of 19 ° C. in the heating operation. Indoor units 17, 18, and 1 of the second air conditioner 12
9 is set to the set temperature of 20 ° C. in the heating operation.

The CPU 27 of the central control device 15 displays the operation screen 29 when all the indoor units 17, 18 and 19 of the first air conditioner 11 and the second air conditioner 12 have been set to the state before the maintenance work. "Restore complete"
Display the message The serviceman confirms this display and ends all the work.

Therefore, according to the above embodiment, the following effects can be obtained.

The central control unit 15 stores a state of the indoor units 17, 18 and 19 of the first air conditioner 11 and the second air conditioner 12 at any time.
Therefore, before the maintenance work of at least one of the first air conditioner 11 and the second air conditioner 12,
The operating state of the indoor units 17, 18, and 19 of the first air conditioner 11 and the second air conditioner 12 at that time can be stored in the storage device 28. Further, since the CPU 27 of the central control device 15 is configured to be able to set the respective indoor units 17, 18, 19 to the state stored in the storage device 28 at any other time, the first air conditioner After the maintenance work of at least one of the air conditioner 11 and the second air conditioner 12, the respective indoor units 17,
18 and 19 can be set to the state before the maintenance work stored in the storage device 28. From these, the indoor units 17, 18, and 1
By the centralized control of 9, the indoor units 17, 18, and 19 can be quickly and easily restored to the state before the maintenance work after the maintenance work.

As described above, the present invention has been described based on the above embodiment, but the present invention is not limited to this.

[0040]

As described above, according to the air conditioning system of the present invention, the central control device for centrally controlling the air conditioner has a storage device capable of storing the states of a plurality of indoor units at any time. It is configured so that each indoor unit can be set to the state stored in the storage device at any other time, so that the indoor unit can be quickly and easily restored to the state before the maintenance work after the maintenance work Can be done.

[Brief description of the drawings]

FIG. 1 is a system diagram showing an embodiment of an air conditioning system according to the present invention.

FIG. 2 is a diagram showing one screen of a display device in the centralized control device of FIG. 1;

FIG. 3 is a flowchart showing one operation of the centralized control device of FIG. 1;

[Explanation of symbols]

 Reference Signs List 10 air conditioning system 11 first air conditioning device 12 second air conditioning device 15 central control device 16 outdoor unit 17, 18, 19 indoor unit 25 operation display device 27 CPU 28 storage device 29 operation screen 30 operation switch 31 operation switch

Claims (2)

[Claims] An air conditioning system for centrally controlling an air conditioner including an outdoor unit and a plurality of indoor units by a centralized control device, wherein the centralized control device is configured to control a state of the plurality of indoor units at any time. An air conditioning system characterized by having a storage device capable of storing the information, and being able to set the respective indoor units to a state stored in the storage device at any other time. 2. The centralized control device includes an operation switch for storing a state of a plurality of indoor units in a storage device, and an operation switch for setting each of the indoor units to a state stored in the storage device. The air conditioning system according to claim 1, further comprising: