JPH10103699A - Heating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the total electric capacity at the time of ignition from exceeding an allowable value on the occasion of simultaneous operations of a large number of terminal heaters, by providing a centralized control unit which gives a command to make the terminal heaters operate simultaneously and by providing a control means which outputs an operation start command to each terminal heater on the basis of that command after a prescribed standby time passes. SOLUTION: A simultaneous operation switch 10 on an operating panel 9 of a centralized control unit 2 is pushed on the occasion when simultaneous operations of terminal heaters 1 are conducted in an operation of a heating system 1. Then a microcomputer 25 makes a control so that the terminal heaters 7 in the number of sixteen may start heating operations on the basis of a simultaneous operation program. Moreover, the microcomputer 25 waits for a prescribed standby time (e.g. 60 seconds) to pass, according to the simultaneous operation program, in order to avoid a state that the total electric capacity at the time of ignition exceeds an allowable value, and then it makes transfer to execution of the simultaneous operation program. In the case when the terminal heater 7 for the room No. 1 is judged to be in operation, an igniting operation therefor is already ended, and even when a heating operation for the room No.2 is conducted immediately, the total electric capacity does not exceed the allowable value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to schools, hospitals, hotels, etc., which need to manage a large number of fuel vaporization type terminal heaters (eg, forced supply / exhaust type oil heaters, oil heaters, etc.) by a centralized control device. The present invention relates to a heating system suitable for applying to a facility.

[0002]

2. Description of the Related Art Conventionally, as a heating system of this type, as disclosed in Japanese Patent Publication No. 6-33899, Japanese Utility Model Publication No. 7-5746, Japanese Patent Publication No. 7-62553, etc. In response to an operation start signal output to a terminal heater, a heater that heats a vaporizer of the terminal heater with an electric heater (for example, 550 W) and then ignites to perform a heating operation has been widely used.

[0003]

However, in this heating system, when the central control unit outputs an operation start signal to each terminal heater in order to perform simultaneous operation of the terminal heaters, all the terminal heaters simultaneously perform the heating operation. , There is a problem that the total electric capacity at the time of ignition may exceed an allowable value, particularly when the number of terminal heaters is large.

In view of the above circumstances, the present invention provides a heating system capable of preventing a situation where the total electric capacity at the time of ignition exceeds an allowable value during simultaneous operation of terminal heaters even when the number of terminal heaters is large. The purpose is to:

[0005]

That is, the present invention relates to a heating system in which a plurality of fuel vaporization type terminal heaters are connected to a centralized control device via terminal connectors, respectively. A simultaneous operation switch for instructing is provided in the centralized control device, and operation control means for sequentially outputting an operation start instruction with a predetermined standby time at each terminal heater based on the instruction from the simultaneous operation switch is provided. Be composed.

Further, the present invention provides a heating system in which a plurality of fuel vaporization type terminal heaters are connected to a centralized control device via terminal connectors, respectively. Provided in the centralized control device, based on a command from the simultaneous operation switch, provided with operation control means for sequentially outputting an operation start command with a predetermined standby time in each of the terminal heaters, further comprising the standby time A standby time changing means for changing the time is provided.

[0007]

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

FIG. 1 is a wiring diagram showing an embodiment of a heating system according to the present invention, FIG. 2 is a front view showing an example of an operation panel of a central control device, and FIG. 3 is an example of an operation panel of a terminal heater. 4 is a control block diagram of the heating system shown in FIG. 1, FIG. 5 is a flowchart showing an example of the simultaneous operation program, and FIG. 6 is a flowchart showing an example of the standby time setting subprogram.

As shown in FIG. 1, a heating system 1 according to the present invention has a centralized control device 2 to which a signal trunk 3 is connected. 1 for signal trunk 3
Six signal branch lines 5 are connected, and each signal branch line 5
Are connected to terminal heaters 7 via terminal connectors 6, respectively. These terminal heaters 7 are installed one by one in 16 rooms from room 1 to room 16.

The centralized control device 2 has an operation panel 9 as shown in FIG. 2. On the operation panel 9, a simultaneous operation switch 10, a simultaneous stop switch 11, a memory operation switch 12, and a room selection switch Switch 13, temperature raising switch 15,
Temperature switch 16, room number display 17, temperature display 1
9, current temperature lamp 14, set temperature lamps 18 and 1
While six individual operation switches 20 are provided,
A lamp 21 for turning off the main body corresponding to each individual operation switch 20,
An operation instruction lamp 22 and a program operation lamp 23 are provided.

On the other hand, as shown in FIG. 3, each terminal heater 7 has an operation panel 30, on which a current temperature display section 31, a set temperature display section 32, and a temperature raising switch 33 are provided. And a temperature lowering switch 34. Also, as shown in FIG. 1, a temperature sensor 8 is attached to the back of each terminal heater 7, and the temperature sensor 8 can detect the room temperature of the room where the terminal heater 7 is installed. .

The centralized control device 2 includes a microcomputer 25 as shown in FIG.
Simultaneous operation switch 10 and simultaneous stop switch 1 described above
1, memory operation switch 12, room selection switch 1
3, temperature raising switch 15, temperature lowering switch 16, each individual operation switch 20, room number display section 17, temperature display section 19,
A current temperature lamp 14, a set temperature lamp 18, a main body cutoff lamp 21, an operation instruction lamp 22, and a program operation lamp 23 are connected.

Further, each terminal heater 7 has a microcomputer 35. The microcomputer 35 includes a temperature sensor 8, a temperature raising switch 33, a temperature lowering switch 34, a current temperature display 31 and a set temperature display 32. Is connected.

Since the heating system 1 according to the present invention has the above configuration, when the heating system 1 is operated, the operation mode of the terminal heater 7 (simultaneous operation, individual operation,
Perform the following operations according to the memory operation).

First, when performing the simultaneous operation of the terminal heater 7, the simultaneous operation switch 1 on the operation panel 9 of the central control device 2 is operated.
Press 0. Then, the microcomputer 25, based on the simultaneous operation program PRG1 shown in FIG.
Controls to start the heating operation.

That is, first, the simultaneous operation program PRG
In step S1 of 1, it is determined whether or not the terminal heater 7 of the first room is in operation. If it is determined that the terminal heater 7 of the first room is not in operation, the simultaneous operation program PRG1 is performed.
And outputs an operation start command to the terminal heater 7 in the first room via the signal trunk line 3, the signal branch line 5, and the terminal connector 6. In response to this, the microcomputer 35 of the terminal heater 7 in the first room energizes an electric heater (not shown) of the terminal heater 7 to heat the vaporizer and then ignites to perform the heating operation. Control.

Further, the microcomputer 25 waits for a predetermined standby time (for example, 60 seconds) to elapse in step S3 of the simultaneous operation program PRG1 in order to avoid a situation where the total electric capacity at the time of ignition exceeds an allowable value. From step S4 of the simultaneous operation program PRG1. In addition, as a result of the determination in step S1 of the above-mentioned simultaneous operation program PRG1, when it is determined that the terminal heater 7 of the first room is in operation, the ignition work of the terminal heater 7 has already been completed. Since the total electric capacity at the time of ignition does not exceed the allowable value even if the heating operation of the terminal heater 7 in the next room 2 is immediately performed, step S of the simultaneous operation program PRG1 is performed.
2. Skip S3 and proceed to step S4.

Then, in step S4 of the simultaneous operation program PRG1, it is determined whether or not the terminal heater 7 in the second room is in operation. If it is determined that the terminal heater 7 in the second room is not in operation, In step S5 of the simultaneous operation program PRG1, the operation start command is output to the terminal heater 7 in the second room via the signal trunk 3, the signal branch 5 and the terminal connector 6. In response to this, the microcomputer 35 of the terminal heater 7 in the second room heats the vaporizer by energizing the electric heater (not shown) of the terminal heater 7 and then performs the heating operation by igniting. Control.

Further, the microcomputer 25 waits for a predetermined standby time (for example, 60 seconds) to elapse in step S6 of the simultaneous operation program PRG1 in order to avoid a situation where the total electric capacity at the time of ignition exceeds an allowable value. Then, the operation shifts to the heating operation of the terminal heater 7 in the next room No. 3. In addition, as a result of the determination in step S4 of the above-mentioned simultaneous operation program PRG1, when it is determined that the terminal heater 7 of the second room is in operation, the ignition work of the terminal heater 7 has already been completed. Since the total electric capacity at the time of ignition does not exceed the allowable value even if the heating operation of the terminal heater 7 in the next room 3 is immediately performed, steps S5 and S5 of the simultaneous operation program PRG1 are performed.
6 is skipped and the operation moves to the heating operation of the terminal heater 7 in the third room.

Similarly, when the heating operation of the terminal heater 7 in the last room 16 starts, the simultaneous operation of the terminal heaters 7 based on the simultaneous operation program PRG1 ends.

As described above, when the simultaneous operation switch 10 is pressed, the microcomputer 25 outputs an operation start command to the sixteen terminal heaters 7 after a predetermined standby time (for example, 60 seconds). In response to this, each terminal heater 7 sequentially starts its heating operation at every predetermined standby time, so that it is possible to prevent a situation where the total electric capacity at the time of ignition exceeds an allowable value.

When the individual operation of the terminal heater 7 is performed, the individual operation switch 2 on the operation panel 9 of the centralized controller 2 is operated.
Press 0. Then, the microcomputer 25 sets the individual operation switch 2
0 is commanded to the terminal heater 7 to which the operation is started via the signal trunk line 3, the signal branch line 5, and the terminal connector 6,
In response to this, the microcomputer 35 of the terminal heater 7 controls so that a predetermined heating operation is performed. As a result, some terminal heaters 7 perform the heating operation.

Further, when performing the memory operation of the terminal heater 7, the memory operation switch 12 on the operation panel 9 of the central control device 2 is pressed. Then, the microcomputer 25 instructs the terminal heater 7 instructed to perform the memory operation to start the operation via the signal trunk line 3, the signal branch line 5, and the terminal connector 6, and receives the instruction to start the operation. Microcomputer 3
5 controls so that a predetermined heating operation is performed. As a result, some terminal heaters 7 perform the heating operation.

As described above, the heating system 1 can be operated according to the operation mode of the terminal heaters 7, but the current temperature display section 31 and the set temperature display section 32 on the operation panel 30 of each terminal heater 7. Each has its terminal heater 7
The current temperature and the set temperature of the room where the
When the set temperature of the terminal heater 7 is to be changed, the set temperature can be changed to a desired temperature by pressing the temperature raising switch 33 or the temperature lowering switch 34 because the temperature is displayed in segments.

The confirmation of the current temperature and the set temperature of each terminal heater 7 and the change of the set temperature can also be carried out on the central control device 2 side. To do that,
The user selects the desired terminal heater 7 by pressing the room selection switch 13 on the operation panel 9 of the central control device 2. Here, when the room selection switch 13 is pressed, the display content changes sequentially for each pressing operation. That is, “1” is displayed in the room number display section 17.
Since “2”, “3”,... And the corresponding numbers of the terminal heaters 7 are displayed in seven 2-digit segments, the terminal heaters 7 can be easily selected while looking at the display on the room number display section 17. Further, the room temperature (current temperature) of the terminal heater 7 thus selected is displayed on the temperature display section 19, and the current temperature lamp 14 is turned on. This is the current temperature display mode. Here, when it is desired to change the set temperature of the terminal heater 7, the temperature raising switch 15 or the temperature lowering switch 16 is pressed. Then, at the same time when the current temperature lamp 14 is turned off, the set temperature lamp 18 is turned on and the mode shifts to the temperature setting mode.
To lower the set temperature, press the temperature lowering switch 16 to change the set temperature to a desired temperature. Therefore, the state of the surrounding environment of the terminal heater 7 can be grasped on the central control device 2 side, and it is not necessary to go to the room where the terminal heater 7 is installed. When there are many, it is excellent in management convenience.

When the operation of the terminal heater 7 is stopped, the simultaneous stop switch 1 on the operation panel 9 of the central control device 2 is used.
Press 1. Then, the microcomputer 25 instructs the operating terminal heaters 7 to stop operating via the signal trunk line 3, the signal branch line 5, and the terminal connector 6, and in response to this, the microcomputer 35 of each terminal heater 7 issues a predetermined command. Control to stop the heating operation. As a result, all the terminal heaters 7 are in an operation stop state.

It is of course possible to stop the operation of each terminal heater 7 by pressing the individual operation switch 20 corresponding to the terminal heater 7 in operation.

In the above-described embodiment, the operation is sequentially started after a predetermined standby time is set for each terminal heater 7 so that the total electric capacity of the 16 terminal heaters 7 at the time of ignition does not exceed an allowable value. The heating system 1 that outputs a command has been described. However, when the number of terminal heaters 7 is small or when the allowable value of the electric capacity is large, it is not necessary to set the standby time long. Therefore, it is possible to provide a DIP switch (not shown) as the standby time changing means in the central control device 2 and operate the switch to appropriately change the standby time. In this case, prior to the simultaneous operation of the terminal heater 7 described above, the microcomputer 25 sets the standby time based on the standby time setting subprogram PRG2 shown in FIG. That is, in step S1 of the standby time setting subprogram PRG2, the microcomputer 25 determines whether the DIP switch is ON or OFF. When it is determined that the DIP switch is OFF, the microcomputer 25 determines in step S2 of the standby time setting subprogram PRG2. Then, the standby time is set to 1 second, and if it is determined that the dip switch is ON, the process proceeds to step S3 of the standby time setting subprogram PRG2, and the standby time is set to 60 seconds.

Further, in the above-described embodiment, the heating system 1 including the 16 terminal heaters 7 has been described, but it is needless to mention that the number of terminal heaters 7 is not limited to 16. .

[0030]

As described above, according to the present invention, in a heating system in which a plurality of fuel vaporization type terminal heaters are connected to a central control device via terminal connectors, respectively.
A simultaneous operation switch for instructing the simultaneous operation of the terminal heaters is provided in the centralized control device, and based on an instruction from the simultaneous operation switch, an operation start instruction is sequentially issued after a predetermined standby time for each terminal heater. Since the operation control means such as a microcomputer for outputting is provided, the terminal heaters start the heating operation sequentially at a predetermined standby time during the simultaneous operation of the terminal heaters. At most, it is possible to prevent a situation where the total electric capacity at the time of ignition exceeds an allowable value.

Further, according to the present invention, in a heating system in which a plurality of fuel vaporization type terminal heaters are connected to a centralized control device via respective terminal connectors, simultaneous operation for commanding simultaneous operation of the terminal heaters is provided. A switch provided in the centralized control device, based on a command from the simultaneous operation switch, provided with operation control means such as a microcomputer for sequentially outputting an operation start command at a predetermined standby time to each of the terminal heaters, Since the standby time changing means such as a dip switch for changing the standby time is provided, when the terminal heaters are simultaneously operated, each terminal heater sequentially starts its heating operation every predetermined standby time. Even if the number of terminal heaters is large, it is possible to prevent the total electric capacity at the time of ignition from exceeding an allowable value, and to operate the standby time changing means. As a result, the standby time can be easily changed, so that a desired operation mode can be adopted according to the number of terminal heaters 7 and the allowable value of the electric capacity, and the versatility of the heating system is expanded. I do.

[Brief description of the drawings]

FIG. 1 is a wiring system diagram showing one embodiment of a heating system according to the present invention.

FIG. 2 is a front view showing an example of an operation panel of the centralized control device.

FIG. 3 is a front view showing an example of an operation panel of the terminal heater.

FIG. 4 is a control block diagram of the heating system shown in FIG.

FIG. 5 is a flowchart illustrating an example of a simultaneous operation program.

FIG. 6 is a flowchart illustrating an example of a standby time setting subprogram.

[Description of Signs] 1 ... Heating system 2 ... Central control device 6 ... Terminal connector 7 ... Terminal heater 10 ... Simultaneous operation switch 25 ... Operation control means (microcomputer)

Claims (2)

[Claims] 1. A heating system in which a plurality of fuel vaporization type terminal heaters are connected to a centralized control device via respective terminal connectors, wherein a simultaneous operation switch for commanding simultaneous operation of the terminal heaters is controlled by the centralized control. A heating system, provided in the device, and an operation control means for sequentially outputting an operation start command to each of the terminal heaters at a predetermined standby time based on a command from the simultaneous operation switch. 2. A heating system in which a plurality of fuel vaporization type terminal heaters are connected to a centralized control device via respective terminal connectors, wherein a simultaneous operation switch for commanding simultaneous operation of the terminal heaters is controlled by the centralized control. Provided in the device, based on a command from the simultaneous operation switch, provided with operation control means for sequentially outputting an operation start command at a predetermined standby time to each of the terminal heaters, and further comprising a standby for changing the standby time. A heating system provided with time changing means.