KR100529877B1 - operating method of the Multi air conditioner's central control system - Google Patents

Abstract

The present invention relates to a central control system of a multi-air conditioner and a method of operating the same, connected to a plurality of indoor units and outdoor units, and including a central controller capable of inputting and confirming control commands relating to air conditioning. A plurality of indoor units installed, an outdoor unit connected to the plurality of indoor units to control the indoor unit, and an outdoor network connected to the outdoor unit to input commands for monitoring and controlling the plurality of indoor units and outdoor units, and a control state As it is configured to include a central controller to enable the external confirmation of the, by the central control of a plurality of indoor and outdoor air installed in the building to improve the efficiency and convenience for cost and to expand the function through the maintenance of the central controller responsible for the central control It has the advantage of being easy.

Description

Operating method of the Multi air conditioner's central control system

The present invention relates to a central control system of a multi-air conditioner and a method of operating the same, and in particular, the central control of a multi-air conditioner including a central controller connected to a plurality of indoor units and outdoor units and capable of inputting and confirming control commands related to air conditioning. A system and a method of operating the same.

1 is a block diagram illustrating a control system of a multi-air conditioner according to the related art, which will be described in detail with reference to the related art.

The multi-air conditioner system refers to a system composed of one outdoor unit 20 and a plurality of indoor units 10, and may be simultaneously cooled or partially cooled at the same time, thereby providing high efficiency and economical advantages. In general, one outdoor unit and a plurality of indoor units are connected to each floor of a building, and outdoor units and multiple indoor units are installed in each floor in a multi-storey building.

In order to simultaneously cool or partially cool the multi-air conditioner, the outdoor unit must finally control and manage the states of the plurality of indoor units connected to the outdoor unit. Therefore, when a user inputs a cooling command to one indoor unit, the outdoor unit connected to the indoor unit detects which cooling command is input to which indoor unit and adjusts the degree of condensation of the refrigerant to perform a cooling operation corresponding to the cooling command.

However, in the conventional multi-air conditioner system, when there is a problem with a plurality of indoor units, the manager was able to access the outdoor units connected to the plurality of indoor units, respectively, and input control commands for repair and maintenance, as in a large building. When several outdoor units are installed in each floor, the manpower and cost required for the management of the outdoor unit is considerable.

Recently, a central controller capable of centrally controlling a plurality of outdoor units is separately installed, and the manager does not have access to each outdoor unit. However, the manager uses a central controller that manages a plurality of outdoor units, and a plurality of indoor units connected to the outdoor unit and the outdoor unit. Although central control is possible, the central controller has only a simple command input and confirmation function such as on / off, and thus there is a problem in that it is impossible to control the general matters of the outdoor unit and the indoor unit.

The present invention has been made to solve the above-mentioned problems of the prior art, and includes an input unit and an output unit to enable external input and output of control commands of a plurality of outdoor units and indoor units, and a control program for driving state control and monitoring is driven. The present invention provides a method of operating a central control system of a multi-air conditioner by using a central controller to facilitate central management of various matters related to air conditioning, thereby improving efficiency and convenience of multi-air conditioner control.

According to a feature of the operation method of the central control system of a multi-air conditioner according to the present invention for solving the above problems, a plurality of indoor units and outdoor units connected to each outdoor unit and a central controller connected to a plurality of indoor units, and performing air conditioning A first step in which an operating system (OS) of a central controller for centrally controlling the system is loaded so that the system is initially stabilized, a second step in which a control program embedded in the central controller is executed, and an air conditioner through manipulation of the control program A third step of inputting a control command relating to a second step; a fourth step of performing a control operation according to the input control command; and a fifth step of storing and externally outputting a result of the control operation; The third step may include a first process of determining whether a non-input state of a control command continues for a predetermined time and the control. The method may further include a second process of entering a command standby mode for minimizing a running system resource when a non-input state of a command continues.

delete

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a block diagram showing a central control system of a multi-air conditioner of the present invention, Figure 3 is a block diagram of a central controller applied to the present invention, with reference to this will be described in detail the present invention.

In the multi-air conditioner of the present invention, the plurality of indoor units 100 are connected to one outdoor unit 200, and the space utilization efficiency is low and the installation cost burden is low when installing, and one outdoor unit is connected to the plurality of indoor units and operated. Therefore, the power consumption is reduced, so the energy efficiency is excellent.

The outdoor unit 200 is a condensing means for condensing a high-temperature, high-pressure gas refrigerant into a liquid refrigerant, while the high-temperature, high-pressure gas refrigerant from the compressor passes through the outdoor unit. As a result, it gradually condenses and becomes a medium-temperature high-pressure liquid refrigerant. Therefore, the outdoor unit 200 is configured to include an outdoor blower made of an outdoor fan and a motor for blowing air to increase heat exchange efficiency.

When the medium-temperature and high-pressure liquid refrigerant expands in the expansion valve and becomes a low-temperature low-pressure liquid refrigerant, and passes through the indoor unit, the liquid refrigerant absorbs heat from the indoor air and evaporates, causing vaporization by itself, causing the temperature of the indoor air to drop. Indoor cooling is performed. Therefore, the indoor unit 100 includes an indoor blower including a motor and an indoor fan through which indoor air passes and discharges hot or cold air into the room.

The plurality of indoor units 100 are installed at a designated location in the building and are connected to the outdoor unit 200 network, for which the RS-485 standard is used. As a result, the outdoor unit 200 may manage the air conditioning state of the plurality of indoor units connected to each other, and may control the condensation degree of the refrigerant to be sent to the indoor unit 100.

Here, RS-485 is a standard for multipoint communication lines as one of the interface specifications of serial transmission. By using a low impedance driver and a receiver, up to 32 nodes per line are allowed. In addition, it has a different transmission distance depending on the transmission speed, but can transmit data up to 1200m.

In the case of a large building, a plurality of outdoor units 200 are also installed according to the number of installed indoor units. Such outdoor units are networked with the central controller 300 using a communication standard (TCP / IP) of Ethernet. Ethernet refers to a local area network (LAN) that can exchange information at a transmission rate of 10Mbps between up to 1,024 multipoints within about 2.5 km, and the standard used is TCP / IP.

Therefore, the plurality of indoor units 100 and the outdoor unit 200 are network-connected using the RS-485 standard, and the outdoor unit 200 and the central controller 300 are connected to the internal network using the RS-485 standard, and at the same time TCP / It can be connected to external network using IP standard. Therefore, an interface module for mutual conversion between the RS-485 standard and the TCP / IP standard is added between the central controller 300 and the outdoor unit 200, and the manager uses a plurality of outdoor units connected to each other by using the central controller 300. The central control unit 200 can be centrally controlled to manage the air conditioning state of the room by the plurality of outdoor units 200 and the indoor unit 100.

Referring to the configuration of the central controller with reference to Figure 3, the central controller 300 is connected to the internal network 200 and the internal network connection unit 310 to enable data transmission and reception, and the external Internet network The external network connection unit 320 includes a wired LAN module 321 for a wired connection with a local area network, including an external network connection unit 320 to allow data transmission and reception with a remote by network connection through a wired or wireless network. Further includes a wireless LAN module 322 for. Therefore, the central controller 300 can be connected to the wired or wireless connection to the Internet network, on the contrary, a remote controller capable of wired or wireless connection to the Internet network can be connected to the central controller 300 to control the multi-air conditioner in the building.

In addition, the central controller 300 is equipped with a touch screen or a screen and a keypad (not shown) on the exterior, an output unit 330 for controlling the output state of the screen so that the administrator can check the monitoring and control state, and the screen An input unit 340 for receiving a control command input through the storage unit, and a storage unit 350 for storing the monitoring and control results of the plurality of indoor units 100 and the outdoor unit 200 and storing details of the input control command. It includes.

The storage unit 350 may include a DRAM, a flash memory, and the like. The DRAM is a main memory device of a large-scale integrated circuit that is widely used, and its internal circuit structure is simple, so that the storage density is high and the price is low. Such DRAMs contain a control program and a variety of application programs that are driven by a central controller.

The flash memory is a storage device capable of erasing stored contents by electrical processing, and is used for storing and reading out data to be changed. For example, content data of an Internet page accessed through the central controller of the present invention, data of an application program for managing manager-specific information, and the like may be stored in the flash memory.

The central controller 300 drives a control program that processes the control command transmitted from the input unit 340, stores and outputs the result data of the control command, and controls the connection between the internal and external networks. The main control unit 360 includes an operating system 361 which provides a basic environment so that the control program can be executed efficiently, and control states of the plurality of indoor and outdoor units through the control program. The monitoring manager 362 periodically monitoring, the control manager 363 for executing the control command transmitted from the input unit 340, and the details processed by the monitoring manager 362 and the control manager 363 are cached. And a temporary memory 364 to be stored.

In addition, the main control unit 360 is HTTP using a hypertext transfer protocol (HTTP), which is a protocol between the Internet web server and a server / client used for transmitting and receiving data by a browser for remote control of the control program when accessing an external Internet network. It further comprises a server module 365 to enable the transmission and reception of data.

The main controller 360 may automatically enter an energy saving mode and control the operation of the central controller 300 when the non-input state of the control command exceeds a predetermined time, and the manager may control the heating and cooling using the control program. You can also easily specify a time schedule.

The operation method of the central control system of the multi-air conditioner of the present invention configured as described above will be described with reference to FIG.

In the first step, an operating system (OS) of a central controller for centrally controlling a plurality of indoor units and outdoor units that perform air conditioning is loaded (S1), and the system is initially stabilized. The main memory of the central controller is cleared, and the OS It loads and resides in the main memory device to boot (S2), and clears the background screen displayed on the screen (S3) to wait for the control program.

In the second step, a control program built in the central controller is executed (S4), and in the third step, a control command relating to air conditioning is input (S6) through manipulation of the control program. It is determined whether or not the non-input state of the control command continues for a predetermined time (S5), and when the non-input state of the control command continues, the system enters a command standby mode for minimizing a running system resource (S11) to save energy consumption. Can be.

In the fourth step, the input control command is transmitted to the outdoor unit, and the outdoor unit transmits the control command to the indoor unit (S7) to perform air conditioning according to the control command (S8).

In the fifth step, the result of performing the control operation is stored in the self storage unit (S9) and output to the screen mounted on the exterior (S10) so that the user can check the control result.

When requesting the state monitoring in which air conditioning is performed using the control program (L4), the central controller connects to the corresponding air conditioner (L5) to check the state of the plurality of outdoor units connected to the network and the indoor units connected to the outdoor unit, and the The state of the air conditioner is monitored (L6), the state data is stored in the storage unit (L7), and the external output (L8) through the screen.

In addition, when an administrator attempts to access an external Internet network through the central controller, the HTTP module is driven to attempt to connect to the web server. When the administrator receives a response signal indicating that the user is connected, data is transmitted and received.

The operation method of the central control system of the multi-air conditioner of the present invention configured as described above is capable of inputting and outputting control commands and using a central controller capable of driving a control program and an application program stored in a storage unit; Since the indoor unit can be controlled centrally, it reduces waste of manpower and time for the control and management of multi-air conditioners, efficiently performs indoor and heating management, and enables remote control by allowing access to the external Internet network. Therefore, it is effective to extend the management scope of the multi air conditioner.

1 is a configuration diagram showing a control system of a multi-air conditioner according to the related art

2 is a block diagram showing a central control system of a multi-air conditioner of the present invention;

3 is a configuration diagram of a central controller applied to the central control system of the multi-air conditioner of the present invention;

4 is a flow chart showing the operation of the central control system of the multi-air conditioner of the present invention.

<Explanation of symbols on main parts of the drawings>

100: indoor unit 200: outdoor unit

300: central controller 310: internal network connection

320: external network connection unit 330: output unit

340: input unit 350: storage unit

360: main fisherman

Claims (8)

delete delete delete delete delete A first step of connecting the respective outdoor units connected to the plurality of indoor units and the central controller, loading the operating system (OS) of the central controller controlling the plurality of indoor units and the outdoor unit to perform air conditioning, and initially stabilizing the system; A second step of executing a control program embedded in the central controller, a third step of inputting a control command relating to air conditioning through manipulation of the control program, and a control operation to be performed according to the input control command And a fifth step of storing and externally outputting a result of performing the control operation, wherein the third step includes determining whether the non-input state of the control command is continued for a predetermined time; And a second mode for entering a command standby mode to minimize a running system resource when the non-input state of the control command continues. The method of operation of a central control system of the air conditioner characterized in that comprises a. delete The method of claim 6, In the third step, if it is requested to monitor the air conditioning is performed through the operation of the control program, Operating after connecting to the air conditioner for monitoring the condition of the air conditioner to be monitored, the operation method of the central control system of the multi-air conditioner, characterized in that further comprising the state data of the air conditioner is stored and externally output.