JPH07293968A - Centralized controller - Google Patents

Abstract

PURPOSE:To facilitate grasping of a ratio of first and second units to be controlled to an entire system in a used state and to fairly and accurately apportion a cost by managing using states of the first and units to be controlled based on current flow rate detection data and capacity request data. CONSTITUTION:Current flow rate detecting means CT detects current flow rates of indoor units (first unit to be controlled) 20 and an outdoor unit (second unit to be controlled) 22, and outputs current flow rate detection data to a main controller 2. Simultaneously, the controller 2 monitors capacity request data of the unit 20, and manages using states of the units 20 and 22 based on the detection data and the request data. Thus, the controller 2 can easily grasp a ratio of the using state of the unit 20 to that of the entire system based on the flow rates, and fairly and accurately apportion a cost.

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,
In particular, it relates to a centralized control device for centrally controlling a plurality of air conditioners.

[0002]

2. Description of the Related Art Conventionally, a common outdoor unit and a common main controller are provided to connect a plurality of indoor units, and the main controller controls the entire system.
There is a central heating and cooling management system in which a sub-controller provided in each indoor unit on the side of each user controls the indoor unit locally.

In such a centralized heating and cooling management system, the cost and the installation area, etc. are compared with the case where an outdoor unit and an indoor unit are individually provided in order to obtain the same cooling and heating capacity (hereinafter referred to as an individual management system). It was advantageous from the point.

By the way, in the individual management system,
Since the user only has to pay the electricity charge, the gas charge, etc. based on the electricity meter, the gas meter, etc. according to the usage state, it is not necessary to manage the usage state in particular.

On the other hand, in the above-mentioned centralized control system, it is necessary to share the operating cost of the cold heat source, which is a common part, among a plurality of users.

[0006] When calculating the sharing cost, there is a method of uniformly sharing each user, but there are differences in usage time, usage condition (for example, required cooling capacity, etc.), etc. Because of unfairness, a method has been adopted in which the sharing ratio is determined according to the number of indoor units installed by each user.

[0007]

However, in the method of determining the sharing ratio as described above, the unfairness cannot be resolved because the usage time, the usage status, etc. are different for each user. was there.

In the centralized control system as described above, it is general that the power consumption temporarily required at the time of starting the system exceeds the power consumption during the normal operation.

For this reason, if the power consumption thus temporarily required exceeds the power supply capacity set in the centralized management system, the whole system may be down.

In order to solve this, the power supply capacity may be set to have a sufficient margin, but there are cases where it cannot be easily dealt with from the viewpoint of an increase in the scale of the device and cost.

Further, the power consumption of the entire system fluctuates from time to time, and it is not easy to monitor and manage it.

Therefore, a first object of the present invention is to provide a centralized control device capable of accurately grasping the usage state of each controlled device even when a large number of controlled devices are installed. Accordingly, it is an object of the present invention to provide a centralized control device capable of accurately grasping the usage ratio of each controlled device with respect to the usage state of the entire system and sharing the cost evenly.

A second object of the present invention is that in a centralized control system in which a large number of controlled devices are installed, the power consumption required by all of these controlled devices exceeds a preset power supply capacity. It is to provide a centralized control device capable of easily performing demand (power demand) control of the system so that the system does not exist.

[0014]

In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that a first controlled device and one or a plurality of the first controlled devices are connected to each other. The second controlled device that operates based on the capability request data of the first controlled device, and the power supply current amount of the controlled device that is provided in each of the first controlled device and the second controlled device. Amount detection means for detecting the current amount and outputting current amount detection data, and management control for managing the use states of the first controlled device and the second controlled device based on the current amount detection data and the capability request data. Means and
And is configured.

According to a second aspect of the present invention, in the centralized control device according to the first aspect, the management control device is configured to control the first controlled device and the second controlled device based on the current amount detection data.
It is configured by including a demand control means for performing demand control of the controlled device.

According to a third aspect of the present invention, the first controlled device and one or a plurality of the first controlled devices are connected, and the capability request data of the connected first controlled device. Provided on each of the first controlled device and the second controlled device, and outputs the first power consumption data by detecting the power supply current amount of the controlled device. First power consumption data output means,
Based on the capability request data of the first controlled device provided in the second controlled device and connected to the second controlled device, and the first power consumption data corresponding to the second controlled device. A second power consumption data corresponding to each of the first controlled devices and output as second power consumption data.
Power consumption data output means, and management control means for managing the usage states of the first controlled device and the second controlled device based on the first power consumption data and the second power consumption data. Constitute.

According to a fourth aspect of the present invention, in the centralized control device according to the third aspect, the management control device is based on the first power consumption data and the second power consumption data. The second controlled device comprises a demand control means for performing demand control.

[0018]

According to the first aspect of the present invention, the current amount detecting means detects the power source current amount of each of the first controlled device and the second controlled device and outputs the current amount detection data to the management control means. To do.

In parallel with this, the management control means monitors the capability request data of the first controlled device and uses the first controlled device and the second controlled device based on the current amount detection data and the capability requested data. Manage state.

Therefore, the management control means can easily grasp the ratio of the usage status of the first controlled device to the usage status of the entire system based on the current amount, and can fairly share the cost.

According to the second aspect of the present invention, the demand control means of the management control device determines the demands of the first controlled device and the second controlled device based on the actual power supply current amount corresponding to the current amount detection data. Since the control is performed, the usage state of the entire system can be easily grasped, and the demand control can be performed easily and surely.

According to the third aspect of the present invention, the first power consumption data output means detects the power supply current amount of the controlled device provided with the first power consumption data output means and outputs the first power consumption data. Output to management control means.

The second power consumption data output means is the second power consumption data output means.
Each first controlled device based on the capability request data of the first controlled device connected to the second controlled device provided with the power consumption data output means and the first power consumption data corresponding to the second controlled device. The power consumption corresponding to the device is obtained and output as the second power consumption data to the management control means.

With these, the management control means manages the use states of the first controlled device and the second controlled device based on the first power consumption data and the second power consumption data.

Therefore, the management control means can easily and surely grasp the ratio of the power consumption of the first controlled device to the power consumption of the entire system, and can fairly share the cost.

According to the fourth aspect of the present invention, the management control device is configured such that the first controlled device and the second controlled device are based on the actual power consumption corresponding to the first power consumption data and the second power consumption data. Since the demand control is performed, the usage state of the entire system can be easily grasped from the viewpoint of power consumption, and the demand control can be performed easily and surely.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described with reference to the drawings.

FIG. 1 shows a schematic block diagram of a centralized control type cooling and heating system.

The heating / cooling system 1 is roughly divided into a main controller 2 for controlling the entire system 1 and a terminal processing control connected to the main controller 2 via a two-line main communication line LM using a multiplex transmission system. A plurality of communication adapters 3-1 to 3-3 functioning with the device, and controlled devices connected to the respective communication adapters 3-1 to 3-3 via a 2-wire type sub communication line similar to the main communication line. And a device group UG.

The main controller 2 has a controller main body 2-1 in which a communication control board having a configuration substantially similar to that of a communication adapter described later, a control board (not shown) for performing various controls, etc., and various setting data A display unit 2-2 for displaying the operating state of the control device,
Printer 2-3 for printing out various data
And are provided.

The communication adapter 3-1 is, as shown in FIG.
A CPU 10 for controlling the communication adapter 3-1 as a whole, a ROM 11 for storing control programs, data, etc., a RAM 12 for temporarily storing various data, and an interface unit 13 for interfacing with the outside.
The CPU 10, the ROM 11, and the R
The AM 12 and the interface unit 13 are connected via a bus. Further, controlled devices U1 to Un, such as indoor units and outdoor units, are connected via an interface unit 13 and a bus. The same applies to the other communication adapters 3-2 to 3-3.

Although various modes of the controlled device group UG are conceivable, one example thereof will be described below with reference to FIG.

The first communication adapter 3-1 has a sub communication line L.
A plurality of indoor units 20 and an outdoor unit controller 21 are connected via S1, and a plurality of outdoor units 22 are further connected via the outdoor unit controller 21.

A plurality of indoor units 20 and one outdoor unit 22 are connected to the second communication adapter 3-2 via the first sub communication line LS21.
Is connected to the first controlled device group, and the second controlled device group to which a plurality of indoor units 20 and one outdoor unit 22 are connected is also connected via the second sub communication line LS22. There is.

The third communication adapter 3-3 has a sub communication line L.
A plurality of indoor / outdoor unit sets 24 in which one outdoor unit is connected to one indoor unit 20 are connected via S3, and further, via a group control communication line GL which is a control line of one remote controller 25. Multiple indoor / outdoor unit set 26
Are connected.

Further, all the indoor units 20 and the outdoor units 22 are provided with a current detection circuit CT which detects the power supply current of the device and outputs current detection data.

Next, the control system of the indoor unit will be described by taking the indoor unit 20 connected to the communication adapter 3-1 via the sub communication line LS1 as an example.

As shown in FIG. 3, the indoor unit 20 includes a CPU 30 for controlling the entire indoor unit 20, a control program,
A ROM 31 in which data and the like are stored, a RAM 32 in which various data are temporarily stored, a current detection circuit CT, an interface section 33 for performing an interface operation,
And includes a CPU 30, a ROM 31, and an R.
The AM 32 and the interface unit 33 are connected via a bus. Further, the communication adapter 3-1, the other indoor units 20, and the outdoor unit controller 21 are connected via the interface section 33 and the sub communication line LS1. The current detection circuit CT and the interface unit 33 are directly connected.

Next, the structure of the outdoor unit controller 21 will be described with reference to FIG.

The outdoor unit controller 21, as shown in FIG. 4, is a CPU 4 which controls the entire outdoor unit controller 21.
0, ROM storing control programs, data, etc.
41, a RAM 42 for temporarily storing various data,
The current detection circuit CT and an interface section 43 for interfacing with the outside are provided, and the CPU 40, the ROM 41, the RAM 42, and the interface section 43 are connected via a bus.
Further, the communication adapter 3-1 and the indoor unit 20 are connected via the interface section 33 and the sub communication line LS1, and each outdoor unit 22 is connected via the second sub communication line LSB.

Before explaining the operation, the work sharing (processing sharing) in the cooling / heating system 1 of the communication adapters 3-1 to 3-3 and the main controller 2 will be described.

As shown in FIG. 5, the basic functions of the cooling and heating system 1 are a proportional distribution information function, a setting function and a display function.

Of these three basic functions, the proportional distribution information function is shared as the work (processing) of the communication adapters 3-1 to 3-3, and the setting function and the display function are shared as the main controller work (processing). ing.

The apportioning information function collects the current detection data of the indoor unit and the outdoor unit, which are the controlled devices connected to one communication adapter, and stores them in advance in the ROM 11 or the RAM 1.
2 (see FIG. 2), based on the capacity code data indicating the capacity (heating capacity, cooling capacity, etc.) of each controlled device stored in FIG. This is a function that performs processing and control for performing rate apportionment, etc., by obtaining a ratio indicating whether it is occupied.

The apportionment information function will now be described in more detail. In this case, the process for one indoor unit will be described for simplification of description.

The current detection circuit CT of the indoor unit 20 detects the power supply current amount of the indoor unit 20, and the current detection data is sent to the communication adapter 3-1 by meeting the interface section 33 and the sub communication line LS1. To send.

As a result, the communication adapter 3-1 is previously
Based on the capability code data indicating the capability (heating capability, cooling capability, etc.) of each controlled device stored in M11 or RAM 12, the operating state of the indoor unit 20 occupies the overall operating state of the system. Is calculated, that is, a ratio (= electrical proration rate) indicating how much the power consumption of the indoor unit 20 accounts for the power consumption of the entire system.

FIG. 6 shows an example of the proportional distribution data display state.

As apportionment data, FIG. 6 shows the user name (tenant name), the indoor unit number belonging to the user, and the actual indoor unit address data corresponding to each indoor unit number (=
Group code and device code), capacity (capacity) of the indoor unit, ratio of power consumption of the indoor unit to the power consumption of the entire cooling and heating system, (electrical proportional division [%]), for all indoor units of the user Electricity charges based on the corresponding electricity apportionment rate are displayed.

As described above, by distributing the proportional distribution information function to each of the communication adapters 3-1 to 3-3, the information (data) obtained by the sensor (not shown) provided in each controlled device is Each communication adapter 3 provided in the vicinity
-Because it only needs to be transmitted to -1 to 3-3, the communication line can be short, the probability of being affected by noise mixed from the power supply wiring, etc. is reduced, and more accurate data collection is possible. Since the collected data is processed by the communication adapters 3-1 to 3-3 and transmitted as processing result data to the main controller, the processing load of the main controller 2 can be reduced.

As described above, since the apportioning information for grasping the operating state of each indoor unit is obtained based on the current detection data obtained by actually measuring the power supply current, the apportionment of the charge can be calculated from the accurate power consumption. You can do it.

Further, since the proportional distribution information for grasping the operating state of each indoor unit is managed by the communication adapters 3-1 to 3-3 arranged at a position closer to the controlled device, the distance of the communication line. Since it can be shortened, it is possible to prevent noise from being mixed in due to a power supply line or the like.

Further, the apportioning information is provided by each communication adapter 3-1.
~ 3-3 side is stored in the main controller 2 side after being pre-processed and then transferred to the main controller 2 side.
Since the load on the main controller 2 can be reduced, the probability that the entire system will go down due to insufficient processing capacity of the main controller 2 is reduced, a self-sustained distributed system can be constructed, and the load on the main controller 2 can be reduced.

Next, the setting function and the display function will be described again with reference to FIG.

First, the setting function will be described.

The setting function is a function for making settings for centrally managing various functions related to the entire cooling and heating system 1, and all of the grouping setting machines for setting controlled devices to be controlled as the same group. Control / stop setting function to control the operation / stop of each controlled device, operation / stop setting function to control the operation / stop of each controlled device individually, operation mode of each controlled device (cooling, heating, dry , Wind mode, etc.), operation mode setting function, wind speed setting function for each controlled device (rapid, strong, weak, etc.),
Flap setting function to control the flap direction to control the wind direction of each controlled device, hand prohibition setting function to prohibit hand operation with a remote control, etc., due to power capacity overage due to temporary increase in power consumption, etc. Demand setting function to set control conditions for power limitation to prevent system down, temperature setting function to set target temperature of each controlled device, timer setting to set timer operation of each controlled device It consists of various functions such as functions.

As described above, the main controller 2 centrally handles various functions related to the entire cooling and heating system 1.
Since it is managed by the side, cost can be reduced compared to the case where each device has the same function.
It is advantageous in terms of installation area, etc.

Here, the demand setting function will be described more specifically.

In a normal cooling and heating system, from the viewpoints of equipment scale, cost, etc., the power supply capacity is set to the minimum capacity in consideration of the safety factor in the power consumption during normal operation.

Therefore, in the case where the power consumption is temporarily increased, such as during the initial operation of the system, if a large number of controlled devices start driving at the same time, the capacity becomes over and the entire system goes down. there is a possibility.

Therefore, in this embodiment, the demand setting function is used to set the maximum power consumption of the whole controlled device which can be driven in advance corresponding to the power supply capacity.

As a result, if the main controller 2 requests the start of driving via the communication adapter corresponding to each indoor unit 20 or each outdoor unit 22, the indoor unit 20 actually driven at the requested time point. Calculate the total power consumption based on the current detection data obtained from the outdoor unit 22,
The provisional total power consumption obtained by adding the predicted total power consumption of the controlled device currently requested to the obtained actual total power consumption is compared with the set maximum power consumption.

As a result, if there is a possibility that the provisional total power consumption exceeds the set maximum power consumption, that is, the power supply capacity, the controlled device is controlled until the actual total power consumption decreases. Set to standby state.

Therefore, the actually required power consumption does not exceed the maximum allowable power consumption defined by the power supply capacity, so that the entire system does not go down.

Next, the display function will be described.

The display function is a function for displaying a real-time operation state, various processing results, etc. on the display unit 2-2, and an operation / stop display function for displaying an individual operation / stop state of each controlled device. , The operating mode display function that displays the actual operating mode of each controlled device, the wind speed display function that displays the wind speed of each controlled device, the flap display function that shows the flap direction of each controlled device, whether it is in the forbidden state , A demand display function that shows the control state of the power consumption of the entire cooling and heating system 1, a temperature display function that displays the set temperature targeted by each controlled device, the temperature of each part of each controlled measure, the actual There is a temperature display function for indicating the room temperature and the like, and a timer display function for displaying the timer operating state of each controlled device.

As described above, since the various display functions for monitoring the entire cooling and heating system 1 are managed by the main controller 2 side as in the case of the setting function,
It becomes possible for the administrator to easily grasp the operating state of the entire system 1 in real time.

Further, according to this embodiment, between the main controller 2 and the communication adapters 3-1 to 3-3, the communication adapter 3-1.
Since the wiring between 3-3 and the indoor unit and the outdoor unit is a two-wire system based on the multiplex transmission system, it is possible to easily cope with the case where the indoor unit or the outdoor unit is additionally installed.

In the above embodiment, the processing for obtaining the power consumption based on the current detection data is performed by each communication adapter 3
-1 to 3-3 or the main controller 2, the power consumption data is obtained by the CPU which is the controller of each indoor unit 20 or each outdoor unit 22, and each communication adapter 3 is based on this power consumption data. It is also possible to configure so that 1 to 3-3 or the main controller 2 performs the processing.

[0070]

According to the first aspect of the present invention, the management control means manages the usage states of the first controlled device and the second controlled device based on the current amount detection data and the capability request data. The ratio of the usage status of the first controlled device to the usage status of the entire system can be easily grasped based on the amount of current, and the cost sharing and the like can be carried out more fairly and accurately.

According to the second aspect of the present invention, the demand control means of the management control device determines the demands of the first controlled device and the second controlled device based on the actual power supply current amount corresponding to the current amount detection data. Since the control is performed, the usage state of the entire system can be easily grasped, the demand control can be performed easily and surely, the system down can be prevented in advance, and the stable system operation can be performed.

According to the third aspect of the invention, the management control means manages the usage states of the first controlled device and the second controlled device based on the first power consumption data and the second power consumption data. The ratio of the power consumption of the first controlled device to the power consumption of the entire system can be easily and surely grasped, and the cost sharing and the like can be performed more fairly based on the actual power consumption.

According to the fourth aspect of the invention, the management control device is configured such that the first controlled device and the second controlled device are based on the actual power consumption corresponding to the first power consumption data and the second power consumption data. Since the demand control of the system is performed, it is possible to easily grasp the usage state of the entire system from the viewpoint of power consumption, and to perform the demand control easily and surely and prevent the system from going down. Can operate the system.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of an air conditioning system.

FIG. 2 is a block diagram showing a schematic configuration of a communication adapter.

FIG. 3 is a block diagram showing a schematic configuration of a control system of the indoor unit.

FIG. 4 is a block diagram showing a schematic configuration of a control system of the outdoor unit.

FIG. 5 is an explanatory diagram of work sharing of basic functions of the cooling and heating system.

FIG. 6 is an explanatory diagram showing a display example of proportional distribution data.

[Explanation of symbols]

1 Air Conditioning System 2 Main Controller 2-1 Controller Main Body 2-2 Display 2-3 Printer 3-1 to 3-3 Communication Adapter 10 CPU 11 ROM 12 RAM 13 Interface 20 Indoor Unit 21 Outdoor Unit Controller 22 Outdoor Unit 23 Outdoor Machine 24 Indoor / outdoor unit set 25 Remote controller 26 Indoor / outdoor unit set 30 CPU 31 ROM 32 RAM 33 Interface section 40 CPU 41 ROM 42 RAM 43 Interface section CT current detection circuit LM main communication line LS1, LS21, LS22, LS3, LSB, GL sub communication line UG Controlled device group U1 to Un Controlled device

Claims (4)

[Claims] 1. A first controlled device and one or a plurality of the first controlled devices are connected, and a second controlled device which operates based on capability request data of the connected first controlled device. A control device; and a current amount detection unit that is provided in each of the first controlled device and the second controlled device and that detects a power supply current amount of the controlled device and outputs current amount detection data; Centralized control device comprising: management control means for managing the usage states of the first controlled device and the second controlled device based on the detection data and the capability request data. 2. The centralized control device according to claim 1, wherein the management control device performs demand control of the first controlled device and the second controlled device based on the current amount detection data. Centralized control device characterized by having. 3. A first controlled device and one or more of the first controlled devices are connected, and a second controlled device which operates based on the capability request data of the connected first controlled device. The control device is provided in each of the first controlled device and the second controlled device, and detects the power supply current amount of the controlled device to detect the first current.
First power consumption data output means for outputting power consumption data; and the capability request data of the first controlled device, which is provided in the second controlled device and is connected to the second controlled device, and the first controlled device. 2 A power consumption corresponding to each of the first controlled devices is obtained based on the first power consumption data corresponding to the controlled device, and is output as second power consumption data.
Power consumption data output means, and management control means for managing the usage states of the first controlled device and the second controlled device based on the first power consumption data and the second power consumption data. Centralized control device characterized by the above. 4. The centralized control device according to claim 3, wherein the management control device is configured to control the first controlled device and the second controlled device based on the first power consumption data and the second power consumption data. Centralized control device comprising a demand control means for performing the demand control of the above.