JPH01107042A - Centralized control system for air conditioner - Google Patents

Abstract

PURPOSE:To perform an optimum outdoor air cooling control with a simple system by determining the need of the outdoor air cooling operation by a control device for an interior air conditioner, and causing a continuous operation by sending the outdoor air cooling command to a perimeter air conditioner. CONSTITUTION:The control device 1 for an interior air conditioner 2 compares the measured values by an indoor temperature sensor 34 and an outdoor temperature sensor 13 with the set value by the central device 21 to automatically control the dampers 9-11. The control device 31 sends out the measured value obtained from an indoor temperature sensing means 41 which receives the input from a sensor 34 by means of an indoor temperature output means 42. The control device 1 determines the need of the outdoor air cooling by comparing the room temperature and the outside temperature by feeding the output data from the controller 31 and the signal from the sensor 13 to the indoor temperature input means 43 and obtaining the measured value of the outside temperature by the outside temperature sensing means 44. Where possible, the air conditioner 2 is caused to perform the outdoor air cooling operation, and at the same time, the outdoor air cooling command output means 46 is caused to output the outdoor air cooling command to the perimeter air conditioner 32 to perform the outdoor air cooling operation.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a centralized management system for air conditioners installed in office buildings and the like.

BACKGROUND OF THE INVENTION In recent years, with the advancement of information technology in buildings, there is a growing demand for improved air conditioning equipment and its centralized management system in order to achieve both a comfortable workplace environment and energy conservation. And in high-class office buildings, etc.
Systems that use a unit system for each floor and air condition the same room using an interior air conditioner with a built-in control device and a perimeter air conditioner with a built-in control device are being selected. The interior air conditioner referred to here refers to a relatively large air conditioner such as an air handling unit, and is installed to air condition the central portion (interior area) of the air-conditioned space.

In addition, a perimeter air conditioner is a relatively small air conditioner in which multiple units are installed in the air-conditioned space that is conditioned by one interior air conditioner. (perimeter area) installed for air conditioning. The interior air conditioner has a built-in outside air intake and an outside air damper, and the control device measures the indoor temperature and outside air temperature, and performs outside air cooling control when the indoor temperature is high and the outside air temperature is low in the middle of the season. is becoming popular.

Moreover, in the perimeter air conditioner, a system in which a wall-penetrating package air conditioner is installed on an outer wall and has an outside air intake and an outside air damper built in to perform outside air cooling is becoming popular.

However, in the above-mentioned perimeter air conditioner, there is a manual setting system for determining whether or not outside air cooling is possible.
The controller measures the indoor temperature and the outside air temperature and automatically controls it, or is connected to a central device that centrally manages it via a data transmission line, and the controller receives an outside air cooling command from the central device and performs outside air cooling. Systems such as doing this were common.

Problems to be Solved by the Invention In the conventional system described above, the decisions to perform outside air cooling control are not linked in the interior air conditioner and the perimeter air conditioner that condition the same air-conditioned space, and each has its own judgment. Since it is automatically controlled, there is a problem in that it is difficult to achieve true energy savings. Furthermore, if an attempt was made to run both devices for six consecutive pages via the central device, there was a problem in that the program for the central device would become complicated. In addition, temperature detectors that detect indoor and outdoor temperatures are required for each of the interior air conditioner and the perimeter air conditioner, and their errors make it more difficult to link the two, and increase equipment costs. It also had the problem of being expensive.

The present invention solves these conventional problems, and aims to provide a centralized management system for air conditioners that can perform optimal outdoor air cooling control with a simple system configuration and an energy-saving effect. It is something.

Means for Solving the Problem In order to solve this problem, the present invention provides a control device that automatically controls an interior air conditioner that performs air conditioning in an interior area of a room, and a control device that automatically controls an interior air conditioner that controls the outside air inside the interior air conditioner. An outside air temperature detector is installed at the inlet and outputs a detected signal to the control device, and a plurality of vanes are used to control the air conditioning of the perimeter area in the same room where the interior air conditioner air-conditions the air. at least one controller that automatically controls a perimeter air conditioner; an indoor temperature detector that outputs a detected signal to the controller installed at an indoor air intake in the perimeter air conditioner; The controller is configured of a first data transmission line that connects a control device and the controller, and a central device that centrally manages the air conditioner and communicates with the control device via a second data transmission line. The device includes an indoor temperature detecting means for inputting the indoor temperature from the indoor temperature detector, and an indoor temperature detecting means for transmitting the measured value of the indoor temperature obtained by the indoor temperature detecting means to the first data transmission line. The control device comprises an indoor temperature input means for inputting the indoor temperature sent from the controller via the first data transmission line, and an outside temperature detection means for inputting the outside temperature from the outside air temperature detector. , an outside air cooling determination means for comparing the indoor temperature obtained by the indoor temperature input means and the outside air temperature obtained by the outside air temperature detection means and determining whether or not outside air cooling is possible; and an outside air cooling command sending means for sending the determined seven-page outside air cooling command to the controller of the perimeter air conditioner via the first data transmission line.

Function: With this configuration, the control device that controls the interior air conditioner compares the indoor temperature detected by the indoor temperature sensor with the outside temperature of the outside air to be introduced, detected by the outside air temperature sensor, and performs outside air cooling. The interior air conditioner and the perimeter air conditioner are interlocked by determining whether or not the air conditioner is cooled by the outside air cooling determination means and sending an outside air cooling command to the perimeter air conditioner by the outside air cooling command sending means. This allows outside air cooling control to be performed using a simple system configuration, allowing optimal energy-saving control of air conditioners.

Embodiment FIG. 1 is a configuration diagram of a central management system for air conditioners in an embodiment of the present invention. In FIG. 1, an interior air conditioner 2 with a built-in control device 1 is installed in an air conditioned space 3.
The air conditioner mainly handles the air conditioning of the interior area, and air conditioned through a heat exchanger 4 provided inside is blown into the air-conditioned space 3 by an air supply fan 5 through an air supply duct 6. Further, return air from the air-conditioned space 3 is sucked in by a return air fan 8 through a return air duct 7 through the ceiling.

And return air damper 9. Exhaust damper 10° Outside air damper 1
By setting the opening degree of 1 appropriately, the amount of outside air introduced can be varied. At this time, the interior air conditioner 2 can perform outside air cooling by stopping the flow of cold and hot water to the heat exchanger 4 in the intermediate period of the air conditioning mode and increasing the amount of outside air introduced. The control device 1 is an indoor temperature detector 3
Measured value table of indoor temperature detected by 4.Outside air temperature detector 1
A central device 2 that centrally controls the air conditioner is composed of a computer and a measured value of the outside air temperature detected by the central device 2.
The return air damper 9.1 built into the interior air conditioner 2 compares the indoor temperature set value sent from the interior air conditioner 9. Exhaust damper 10. This automatically controls actuators such as the outside air damper 11.

Page 9: Perimeter air conditioner 3 with built-in controller 31
2 mainly serves the perimeter area of the air-conditioned space 3, and the controller 31 automatically controls the operation of the refrigeration cycle (not shown) of the edge meter air conditioner 32.
By stopping the operation of the refrigeration cycle and opening the outside air damper 33, outside air cooling can be performed. Note that the control device 1 and the controller 31 are general microcomputer application devices, and are connected via the first data transmission line 12 so that data can be exchanged.

The controller 31 inputs a signal from the indoor temperature detector 34 provided at the indoor air intake port of the perimeter air conditioner 32, obtains a measured value of the indoor temperature by the indoor temperature detection means 41, and sends this measured value to the indoor temperature. The means 42 can send the data to the first data transmission line 12 as data.

The control device 1 controls the controller 31 by using the indoor temperature input means 43.
The data sent by the controller is inputted from the first data transmission line 12. Further, by inputting a signal from the outside air temperature detector 13104-no installed at the outside air intake port of the interior air conditioner 2, a measured value of the outside air temperature can be obtained by the outside air temperature detection means 44. And control device 1
compares the measured value of the indoor temperature detected by the indoor temperature input means 43 with the measured value of the outside air temperature obtained by the outside temperature detection means 44, and determines whether or not outdoor air cooling is possible using the outside air cooling determination means 45; If it is determined that outside air cooling is possible, the interior air conditioner 2 can be operated for outside air cooling, and the outside air cooling command output means 46 can send an outside air cooling command to the controller 31 via the first data transmission line 12. . Based on this outside air cooling command, the controller 31 causes the verimeter air conditioner 32 to operate for outside air cooling if outside air cooling is possible.

FIG. 2 is a flowchart for explaining the control program executed by the outside air cooling determination means 46.
First, in step 61, the indoor temperature input means 43 is input! The obtained indoor temperature is compared with the set value of the indoor temperature sent from the central device 21, and it is determined whether the air conditioning mode is in the intermediate period.

If the mode is in the intermediate period mode, the room temperature is set to 11 in step 52.
It compares the measured value of the Peno degree with the set value and determines whether or not air conditioning is necessary. If cooling is required, the indoor temperature (Tr
) is compared with the outside air temperature (represented by To) obtained by the outside air temperature detection means 44, and if the outside air temperature is lower, it is determined that outside air cooling is possible, and an outside air cooling command is issued in step 54. . No in all steps 61-53
In this case, it is determined that outside air cooling is not possible, and the outside air cooling command is canceled in step 66.

Effects of the Invention As described above, according to the present invention, there is no need for the central unit to be involved in cooling the outside air by linking two types of air conditioners that air condition the same air-conditioned space, and the software of the central unit can be greatly improved. In addition to being simple, the outside air cooling control of the interior air conditioner and the perimeter air conditioner can be linked with a simple system configuration, resulting in the effect that optimal energy-saving control can be performed.

Furthermore, according to the present invention, there is no need to newly install an indoor temperature detector indoors to obtain the indoor temperature of the air-conditioned space, and there is no need for long wiring from the control device to the indoor temperature detector. It also has the effect of lowering costs.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing a centralized management system for an air conditioner according to an embodiment of the present invention, and FIG. 2 is a flowchart illustrating outside air cooling determination means of the part constituting the centralized management system for the air conditioner. . DESCRIPTION OF SYMBOLS 1...Control device, 2...Interior air conditioner, 12...First data transmission line, 13
......Outside air temperature detector, 21...Central device, 22...Second data transmission line, 31...
...Controller, 32...River/perimeter air conditioner, 3
4... Indoor temperature detector, 41... Indoor temperature detection means, 42... Indoor temperature sending means, 4
3...Indoor temperature input means, 44...Outside air temperature detection means, 46...Outside air cooling determination means, 46
・・・・・・Outside air cooling command sending means.

Claims (1)

[Claims] a control device that automatically controls an interior air conditioner that performs air conditioning in an interior area of a room; an outside air temperature detector that is installed at an outside air intake port in the interior air conditioner and outputs a detected signal to the control device; , at least one controller that automatically controls a plurality of perimeter air conditioners that perform air conditioning in a perimeter area in the same room that is air-conditioned by the interior air conditioner; an indoor temperature detector installed at the air intake port and outputting a detected signal to the controller;
a first data transmission line that connects the control device and the controller; and a central device that centrally manages the air conditioner and communicates with the control device via a second data transmission line, The device includes an indoor temperature detecting means for inputting the indoor temperature from the indoor temperature detector, and an indoor temperature sending means for sending the measured value of the indoor temperature obtained by the indoor temperature detecting means to the first data transmission line. The control device comprises an indoor temperature input means for inputting the indoor temperature sent from the controller via the first data transmission line, and an outside temperature detection means for inputting the outside temperature from the outside air temperature detector. ,
an outside air cooling determination means that compares the indoor temperature obtained by the indoor temperature input means with the outside air temperature obtained by the outside air temperature detection means and determines whether or not outside air cooling is possible; and a determination made by the outside air cooling determination means. an outside air cooling command sending means for sending an outside air cooling command to the controller of the perimeter air conditioner via the first data transmission line.