WO2016120981A1

WO2016120981A1 - Fire alarm system

Info

Publication number: WO2016120981A1
Application number: PCT/JP2015/052086
Authority: WO
Inventors: 佑輝西川
Original assignee: 三菱電機株式会社
Priority date: 2015-01-26
Filing date: 2015-01-26
Publication date: 2016-08-04
Also published as: JP6410848B2; JPWO2016120981A1

Abstract

A fire alarm system (1) of the present invention is provided with: an air conditioner (20) that adjusts the temperature of an air conditioning area; a low temperature apparatus (23) disposed in the air conditioning area; control apparatuses (10, 11) connected to the air conditioner (20) and the low temperature apparatus (23); and a fire alarm device (2), which is connected to the control apparatuses (10, 11), and detects fire in the air conditioning area. The control apparatuses (10, 11) control operations of the air conditioner (20) and the low temperature apparatus (23) on the basis of fire detection signals of the fire alarm device (2).

Description

Fire alarm system

The present invention relates to a fire alarm system having stop control for an air conditioner or the like.

In the prior art, “a smoke detection sensor for detecting the occurrence of smoke in the air conditioning area, an indoor temperature sensor for detecting the room temperature of the air conditioning area, a smoke exhaust device input means for inputting the presence or absence of a smoke exhaust device, A ventilator that is linked to the air conditioning operation for the air conditioning area; and a control unit that controls the operation of the air conditioning operation and the ventilator, wherein the control unit detects smoke due to a fire in the smoke detection sensor; And when the abnormal temperature rise by fire is detected in the indoor temperature sensor, the air conditioner operation and the operation state of the ventilator are controlled based on the input state from the smoke exhausting device input means. Such a technique is disclosed in Patent Document 1.

Thereby, when the occurrence of a fire is detected, the operation of the air conditioner is stopped so that the smoke generated by the fire is not agitated, thereby suppressing a decrease in smoke emission efficiency of the smoke exhaust device. In addition, when a smoke evacuation device is not installed, the air conditioner and the ventilation device are operated, the carbon monoxide is pushed up to the outside and discharged to the outside to avoid carbon monoxide poisoning of the evacuating person.
That is, in the technique disclosed in Patent Document 1, the air conditioner is controlled according to the equipment and the situation in the air conditioning area.

JP 2013-181691 A

If there are air conditioners, ventilators, and low-temperature devices in the air conditioning area, and these devices are managed individually, the movement of each device is different when a fire alarm is received. As in the technique disclosed in Patent Document 1, when a system composed of an air conditioner and a ventilation device is centrally managed, when a fire alarm occurs, the system of the air conditioner and the ventilation device is Stop operation. However, in a system including a low-temperature device, when a fire alarm occurs, the operation is not stopped unless an abnormality of the low-temperature device is detected by a sensor mounted on the low-temperature device. This is for minimizing the influence of the shutdown on the cooling target of the low temperature equipment. Note that the low-temperature equipment includes, for example, a unit cooler that keeps the temperature of a storehouse for foods and processing plants at a low temperature, a condensing unit used in a freezer, a showcase that keeps the temperature of goods in a store, etc. .

On the other hand, stopping the air conditioner in the event of a fire is a priority content from a safety standpoint. Therefore, when centrally managing a system composed of an air conditioner, a ventilation device, and a low temperature device, the central management side receives a fire notification and stops the devices connected to the system. However, only the low-temperature equipment has determined whether to continue or stop the operation with its own sensor. In the system having such a configuration, there is a problem that the intention of centralized management by the fire detector cannot be reflected in the low-temperature equipment.

The present invention has been made in order to solve the above-described problems. In a system including an air conditioner and a low-temperature device, the low-temperature device reflects the intention of the central management side when a fire occurs. It aims at providing the fire alarm system which can maintain the quality of the object of cooling as much as possible.

The fire alarm system according to the present invention includes an air conditioner that adjusts the temperature of an air conditioning area in a building, a low-temperature device installed in the building, and a control device connected to the air conditioner and the low-temperature device. A fire alarm connected to the control device to detect a fire in a building, and the control device controls operation of the air conditioner and the low-temperature equipment based on a fire detection signal of the fire alarm To do.

The fire notification system according to the present invention reflects the intention of the central management side in the operation of each device at the time of fire notification. As a result, the increase in room temperature in an air-conditioning area where there is little influence of fire can be reduced, and damage to objects that are cooled by low-temperature equipment can be minimized.

It is an example of the structure of the fire alarm system which concerns on embodiment of this invention. It is an example (comparative example) of the fire alarm system in a prior art. It is an example of the control flow of the fire alarm system which concerns on embodiment of this invention.

Embodiment 1 FIG.
(Configuration of fire alarm system)
Hereinafter, a fire alarm system according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an example of a configuration of a fire alarm system 1 according to Embodiment 1 of the present invention. The fire alarm system 1 is installed in a building. In FIG. 1, at least one of a remote controller 10 and a system controller 11 is electrically connected to the fire alarm 2. At least one of the remote controller 10 and the system controller 11 is connected to an air conditioner 20a-20c, a ventilation device 21a-20c, and a low temperature device controller 12a-12c. Low temperature devices 23a-23c are connected to the low temperature device controllers 12a-12c. A sensor 22 is connected to the low-temperature device 23a to detect the surrounding temperature change.
The air conditioners 20a to 20c are collectively referred to as the air conditioner 20. Similarly, the ventilation device 21a-21c, the low temperature device controller 12a-12c, and the low temperature device 23a-23c are collectively referred to as the ventilation device 21, the low temperature device controller 12, and the low temperature device 23.

Although only one fire alarm 2 is displayed in FIG. 1, one or more fire alarms 2 are actually installed according to the environment in the building. The connection between the fire alarm 2 and the remote controller 10 and the system controller 11 is appropriately determined according to the system environment.
The fire alarm 2 sends a fire notification signal 3a to at least one of the remote controller 10 and the system controller 11 when a fire is detected. When a fire is no longer detected due to fire extinguishing or the like, a fire notification release signal 3d is sent to at least one of the remote controller 10 and the system controller 11.

In FIG. 1, the remote controller 10 and the system controller 11 are expressed as an integral block.
The system controller 11 is centrally stored in a controller storage panel (not shown). The system controller 11 centrally manages and controls the air conditioner 20, the ventilation device 21, and the low temperature device 23 in an integrated manner for each device. The remote controller 10 is installed indoors, the operation state of the air conditioner 20 or the ventilation device 21 is displayed on the display unit or the like, and the operation state of the air conditioner 20 or the ventilation device 21 is operated by a user operation. is there.
The remote controller 10 and the system controller 11 are connected to each other and exchange signals with each other. The determination of the signal may be made by either the remote controller 10 or the system controller 11 and is appropriately determined depending on the system environment. Either the remote controller 10 or the system controller 11 may transmit the operation control signal (for example, the stop signal 3b) for each device, and is appropriately determined depending on the system environment.
In the present embodiment, both the remote controller 10 and the system controller 11 are not essential for the system. The air conditioner 20, the ventilation device 21, and the low-temperature device 23 receive the signal from the fire alarm 2. As long as the operation can be centrally managed and controlled, it may be configured by only one of them.
In the present embodiment, as an example, it is assumed that the system controller 11 performs determination on a signal and transmission of an operation control signal. The system controller in the present embodiment corresponds to the control device of the present invention.

The air conditioner 20 is installed in a building and adjusts the temperature of air in the air conditioning area. The ventilation device 21 is installed in a building and ventilates air in an air conditioning area and air outside the building. The ventilation device 21 may be integrally incorporated in the air conditioner 20. The air conditioner 20 and the ventilation device 21 are connected to the system controller 11 and the operation is controlled.

The low-temperature equipment 23 is installed in an air conditioning area. For example, a unit cooler that keeps the temperature of a storage room for foods or a processing plant at a low temperature, a condensing unit used for a freezer, a product temperature in a store, and the like. This corresponds to a showcase that holds

The low temperature device controller 12 controls the operation of the low temperature device 23. When the stop signal 3b is received from the system controller 11 when a fire occurs, the low temperature device controller 12 transmits a stop signal 3b to the low temperature device 23 to stop the operation. Further, when the sensor 22 detects a high temperature, a high temperature detection notification 3e is transmitted from the low temperature device controller 12 to the system controller 11. Upon receiving the high temperature detection notification 3e, the system controller 11 transmits a stop signal 3c to the low temperature device controller 12 to stop the operation of the low temperature device 23.
If the operation of the low temperature device 23 can be controlled, the low temperature device controller 12 may be omitted. For example, the low temperature device 23 may be directly controlled by the system controller 11. What is necessary is just to determine suitably according to what kind of thing is specifically used as the low temperature apparatus 23. FIG.

Considering how the air conditioner 20, the ventilation device 21, and the low temperature device 23 are installed in the air conditioning area in the building, a backup device is set in advance from the low temperature device 23. The backup device is a device that continues to operate preferentially even in the event of a fire in order to maintain the quality of the cooling object of the low-temperature device 23. Based on the separation of the room of the air conditioning area and the importance of the object to be cooled by the low temperature equipment 23, weighting which one of the low temperature equipments 23 is preferentially operated is performed. Decide on multiple backup devices.

In FIG. 1, the low temperature device 23a is set as a backup device. A sensor 22 for detecting the ambient temperature is attached to the backup device and connected to the low temperature device controller 12a. For example, when there is a flame due to a fire around the sensor 22, the sensor 22 detects the temperature. When it is determined that the detected temperature is equal to or higher than a certain temperature set in the low temperature device controller 12a, the low temperature device controller 12a stops the operation of the low temperature device 23a.
The number of the air conditioner 20, the ventilation device 21, and the low temperature device 23 may be appropriately determined depending on the environment of the air conditioning area.

In FIG. 1, the arrow line connecting each device represents a signal transmission path. Although there are places where a plurality of lines pass through the same route, a plurality of lines may physically pass through them, or a method of transmitting a plurality of signals by a single line, wireless or the like may be used.

(Comparison example of fire alarm system in the prior art)
Here, the configuration of the fire alarm system in the prior art will be described.
FIG. 2 is an example (comparative example) of a conventional fire alarm system. The fire alarm system 101 is installed in a building. In FIG. 2, at least one of a remote controller 110 and a system controller 111 is electrically connected to the fire alarm 102. At least one of the remote controller 110 and the system controller 111 is connected to air conditioners 120a to 120c and ventilation devices 121a to 121c. Sensors 122 and low temperature devices 123a-123c are connected to the low temperature device controllers 112a-112c. That is, the fire alarm system 101 in which the fire alarm device 102 is connected to the system of the air conditioner 120 and the ventilation device 121, and the independent low-temperature devices 123a to 123c are installed. A sensor 122b and a sensor 122c are attached to the low temperature device 123b and the low temperature device 123c, and the temperature around the low temperature device 123b and the low temperature device 123c is constantly monitored.

In the conventional fire alarm system, when a fire occurs, the fire alarm signal 103a from the fire alarm 102 enters at least one of the remote controller 110 and the system controller 111, and is sent to the air conditioner 120 and the ventilator 121. A stop signal 103b is transmitted to stop the operation.
On the other hand, the low temperature device 123 continues normal operation regardless of the fire notification signal 103a of the fire alarm 102. Only when the

sensors

122b and 122c detect high temperatures, the low-temperature equipment 123b and low-temperature equipment 123c to which the sensors are connected stop operating.
The low temperature device 123a is given priority to continue operation even in the event of a fire, and is set so as not to stop even if there is a flame in the vicinity in order to maintain the quality of the object to be cooled.

In the conventional system as described above, it is possible to continue the operation for the equipment that wants to continue the operation at the minimum even in an emergency, but when the entire system needs to be stopped, the control to stop is possible. There is a problem that it cannot be done.

(Control flow of each device at the time of fire notification of the fire notification system according to the present embodiment)
Below, operation | movement of the fire alarm system 1 which concerns on this Embodiment is demonstrated.
FIG. 3 is an example of a control flow of the fire alarm system 1 according to the embodiment of the present invention. This will be described with reference to this figure. In the fire alarm system 1 configured as shown in FIG. 1, the system controller 11 constantly monitors whether a fire alarm signal is output from the fire alarm 2.

(Step S1)
In step S1 of FIG. 3, an electrical signal is received from the fire alarm 2, the air conditioner 20, the ventilation device 21, and the low temperature device controller 12 connected to the remote controller 10 and the system controller 11, and the signal content is analyzed. .

(Step S2)
In step S2, it is determined whether or not the electrical signal is a fire notification signal 3a from the fire alarm 2. If it is determined in step S2 that the signal from the fire alarm 2 is the fire notification signal 3a, the process proceeds to step S3. If it is not the fire notification signal 3a, the process proceeds to step S6.

(Step S3)
In step S3, when it becomes Yes on the conditions of step S2, the system controller 11 transmits the stop signal 3b with respect to the air conditioner 20 and the ventilator 21, and operates the air conditioner 20 and the ventilator 21. Stop.
The stop of the operation of the air conditioner 20 and the ventilation device 21 is performed from the viewpoint of safety in the event of a fire. In addition, the air conditioner 20 or the like stirs smoke during a fire so that the efficiency of the smoke exhausting device (not shown) is not lowered.
Further, the system controller 11 transmits a stop signal 3b for stopping the operation of the low temperature device 23b and the low temperature device 23c to the low temperature device controller 12b and the low temperature device controller 12c. The stop signal 3b is not transmitted to the low temperature device controller 12a of the low temperature device 23a which is a backup device.

The operation in step S3 is performed only for the first time when the system controller 11 receives the fire notification signal 3a. Unless the system controller 11 receives the fire notification release signal 3d, the stop signal 3b is not transmitted to the air conditioner 20, the ventilation device 21, and the low temperature device 23 even if the fire notification signal 3a is received after the next time. .
In the state where each device has been stopped in step S3, only the low temperature device 23a as the backup device continues to operate. In this state, the operation of the fire alarm system proceeds to step S4.

(Step S4)
In step S4, the system controller 11 determines whether or not the sensor 22 connected to the low temperature device controller 12a is reporting an abnormality, that is, whether or not the high temperature detection notification 3e is received. If the high temperature detection notification 3e has been received, the process proceeds to step S5, and if not, the process proceeds to step S8.

(Step S5)
In step S5, the system controller 11 transmits a stop signal 3c for the low temperature device 23a set as the backup device to the low temperature device controller 12a, and stops the low temperature device 23a that is the backup device.
Thereafter, the operation of the fire alarm system returns to the main loop and repeats the control flow from step S1 again.

In step S4 and S5, control signals are exchanged between the system controller 11 and the low temperature device 23 via the low temperature device controller 12a. However, the low temperature device controller 12a may be omitted. That is, the system controller 11 may directly receive the high temperature detection notification 3e, and directly transmit the stop signal 3c to the low temperature device 23a to stop the operation. Such a configuration is applied when the low temperature device 23a does not include the low temperature device controller 12a.

(Control of backup device)
The sensor 22 constantly monitors the ambient temperature of the low temperature device 23a, and the low temperature device controller 12a determines that the surrounding of the low temperature device 23a is not a fire area when the sensor 22 detects a normal temperature. At this time, the low temperature device controller 12a automatically starts operation of the stopped low temperature device 23a.
Note that it is not necessary for the low temperature device controller 12a to automatically start the operation. For example, when the sensor 22 detects a normal temperature, the low temperature device controller 12a sends a signal to the system controller 11, the system controller 11 determines the signal, and the system controller 11 gives an instruction to start operation to the low temperature device 23a. A configuration may be taken. When the low-temperature device 23 is not provided with the low-temperature device controller 12, the sensor 22 is directly connected to the system controller 11, and the system controller 11 determines the detection of the normal temperature of the sensor 22, and directly operates the low-temperature device 23a. You may take the structure which gives the instruction | indication of a start.

(Step S6)
In step S6, the system controller 11 determines whether the electrical signal from the fire alarm 2 is the fire notification cancellation signal 3d. If Yes, the process proceeds to step S7. If false, the process returns to the main loop and the control flow from step S1 is executed again.

(Step S7)
In step S7, the system controller 11 can operate the air conditioner 20, the ventilation device 21, and the low temperature device 23 (including the low temperature device 23a set as a backup device) that has been stopped in step S3 or step S5. Let it be in a state.

(Step S8)
In step S8, since there is no high temperature detection notification from the sensor 22 connected to the low temperature device 23a, the system controller 11 determines that safety is ensured and restarts the operation.
Thereafter, the operation of the fire alarm system returns to the main loop and repeats the flow from step S1 again.

As described above, in response to a fire notification signal 3a from the fire alarm 2 when a fire occurs, the system controller 11 controls to operate only the low-temperature device 23a that is a device that is desired to continue the minimum operation even in the event of a fire. Therefore, the quality of the object to be cooled by the low-temperature equipment 23 can be maintained even in a fire. Moreover, when a fire approaches the periphery of the low temperature apparatus 23a which is continuing operation | movement, high temperature can be detected with the sensor 22, and control which stops an operation | movement can be performed. When the fire around the low-temperature equipment 23a is extinguished, the sensor 22 detects the normal temperature, and the operation is restarted by the original judgment on the low-temperature equipment 23a side (for example, judgment by the low-temperature equipment controller 12a). Can do.
In this way, at the time of fire notification, centralized control that can maintain the quality of the cooling object of the low-temperature equipment 23 is performed while reflecting the intention of the centralized management side of the system considering safety in the event of a fire. be able to.

1 Fire alarm system, 2 Fire detector, 3a Fire alarm signal, 3b Stop signal, 3c Stop signal, 3d Fire alarm cancel signal, 10 Remote controller, 11 System controller, 12 Low temperature device controller, 12a Low temperature device controller, 12b Low temperature device Controller, 12c Controller, 20 Air Conditioner, 20a Air Conditioner, 20b Air Conditioner, 20c Air Conditioner, 21 Ventilation Equipment, 21a Ventilation Equipment, 21b Ventilation Equipment, 21c Ventilation Equipment, 23 Low Temperature Equipment, 23a Low Temperature Equipment, 23b Low temperature equipment, 23c Low temperature equipment, 101 Fire alarm system, 102 Fire detector, 103a Fire alarm signal, 103b Stop signal, 110 Remote controller, 111 System controller, 112 Low temperature equipment Controller, 112a low temperature equipment controller, 112b low temperature equipment controller, 112c controller, 120 air conditioner, 120a air conditioner, 120b air conditioner, 120c air conditioner, 121 ventilation equipment, 121a ventilation equipment, 121b ventilation equipment, 121c ventilation equipment 123 low temperature equipment, 123a low temperature equipment, 123b low temperature equipment, 123c low temperature equipment.

Claims

An air conditioner for adjusting the temperature of the air conditioning area;
Low temperature equipment installed in the air conditioning area;
A control device connected to the air conditioner and the low-temperature equipment;
A fire alarm connected to the control device and detecting a fire in the air conditioning area,
The control device
A fire alarm system that controls operation of the air conditioner and the low-temperature equipment based on a fire detection signal of the fire alarm.
Among the low-temperature equipment, the low-temperature equipment that has a high priority for operation in the event of a fire is a backup equipment,
The control device
The fire alarm system according to claim 1, wherein operation of the low-temperature equipment other than the backup equipment and the air conditioner is stopped based on the fire detection signal.
The backup device is
It has a temperature detection sensor that detects the ambient temperature,
The control device
The fire alarm system according to claim 2, wherein the operation of the backup device is stopped when the fire alarm detects a fire and the temperature detection sensor detects a temperature higher than a set temperature.
The backup device is
When the backup device has stopped operating,
The fire alarm system according to claim 3, wherein the operation of the backup device is started when the temperature detection sensor detects a temperature lower than a set temperature.
The control device
The fire alarm system according to any one of claims 1 to 4, wherein when the fire detection of the fire alarm is canceled, the air conditioner and the low-temperature device are started to operate.