WO2017010006A1 - Centralized management device - Google Patents

Abstract

A centralized management device for controlling the operation of a plurality of cooling air conditioners, the centralized management device having a temperature detection unit for detecting the temperature within a room, wherein the centralized management device is provided with: a storage means for storing the installation positions of the cooling air conditioners; a threshold assessment means for assessing whether or not the difference between the room-interior temperature detected by the temperature detection unit and a set temperature set in a cooling air conditioner exceeds an abnormal threshold temperature; and a position specification unit for specifying, on the basis of the installation positions of the cooling air conditioners as stored by the storage means, the position at which a temperature abnormality has occurred when the difference is assessed by the threshold assessment means to exceed the abnormal threshold temperature.

Description

Centralized management device

This invention relates to the centralized management apparatus which controls operation | movement of several refrigeration air conditioning equipment.

Conventionally, there are buildings and the like in which a plurality of refrigeration and air-conditioning equipment are installed, in which the temperature of a room or the like is managed by a centralized management device. The building is also equipped with fire detectors that detect the occurrence of fire. When the occurrence of a fire is detected by the fire detector, the refrigeration and air-conditioning equipment is stopped by the central control device in order to suppress the spread of fire.

As an apparatus including such a fire detector, Patent Document 1 discloses an air-conditioning smoke exhaust apparatus in which an open / close damper is provided in an exhaust duct provided in each room. Patent Document 1 uses a thermal sensor that detects a fire when a threshold temperature is exceeded, opens a room opening / closing damper in which the occurrence of the fire is detected, places the room in a negative pressure state, and a fire has occurred. Close the open / close damper of the empty room to make the room pressurized. Thus, it is intended to suppress the spread of fire from a room where a fire has occurred to a room where no fire has occurred. Patent Document 2 discloses an air conditioner including a receiving unit that receives emergency information data from the outside. Patent Document 2 stops the operation of the air conditioner based on the emergency information data received by the receiving means, and restarts the operation of the air conditioner when the operation resumption data is input. Thereby, it is intended to suppress the spread of the disaster such as the air conditioner being damaged due to the disaster or the like.

Japanese Patent Laid-Open No. 11-294822 JP 2011-1405016 A

However, the air-conditioning and smoke exhausting device disclosed in Patent Document 1 detects the occurrence of a fire with a thermal sensor, but the threshold temperature for the thermal sensor to detect heat is fixed, so that it depends on the application. It cannot cope with the space set at room temperature. Moreover, although the air conditioning apparatus disclosed by patent document 2 controls stop or restart of an operation | movement based on the information from the outside, since it is necessary to acquire the information from the outside, it costs. .

The present invention has been made in order to solve the above-described problems, and provides a centralized management apparatus that can cope with a space set at room temperature according to the application and that can reduce costs.

A centralized management device according to the present invention is a centralized management device that controls the operation of a plurality of refrigeration air conditioners having a temperature detection unit that detects a room temperature. The central management device stores storage positions of the refrigeration air conditioning devices. And a threshold value determining means for determining whether or not the difference between the room temperature detected by the temperature detection unit and the set room temperature set in the refrigeration and air-conditioning equipment exceeds the abnormal threshold temperature, and the threshold value determining means determines that the difference is the abnormal threshold temperature. A position specifying means for specifying the position where the temperature abnormality has occurred based on the installation position of the refrigeration air-conditioning equipment stored in the storage means.

According to the present invention, the occurrence of temperature abnormality is detected based on the set room temperature of the refrigeration air-conditioning equipment. For this reason, in the space set to room temperature according to the use, generation | occurrence | production of temperature abnormality is accurately detectable. Thereby, the position where the abnormal temperature has occurred can be specified with high accuracy. Further, since information from the outside is unnecessary, the cost can be suppressed.

It is a schematic diagram which shows the management system 1 in Embodiment 1 of this invention. It is a block diagram which shows the centralized management apparatus 10 which concerns on Embodiment 1 of this invention. It is a graph which shows the temperature detected by the temperature detection part 3 in Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the centralized management apparatus 10 which concerns on Embodiment 1 of this invention. It is a schematic diagram which shows the management system 1a in Embodiment 2 of this invention. It is a block diagram which shows the centralized management apparatus 10a which concerns on Embodiment 2 of this invention. It is a flowchart which shows operation | movement of the centralized management apparatus 10a which concerns on Embodiment 2 of this invention. It is a schematic diagram which shows the display part 7 in Embodiment 3 of this invention. It is a block diagram which shows the centralized management apparatus 10b which concerns on Embodiment 3 of this invention. It is a block diagram which shows the centralized management apparatus 10c which concerns on Embodiment 4 of this invention. It is a table | surface which shows the position of the refrigerating air-conditioning apparatus 2 in Embodiment 4 of this invention. It is a flowchart which shows operation | movement of the centralized management apparatus 10c which concerns on Embodiment 4 of this invention. It is a schematic diagram which shows the management system 1d in Embodiment 5 of this invention. It is a table | surface which shows the use of the refrigeration air conditioning equipment 2 memorize | stored in the memory | storage means 18 in Embodiment 5 of this invention. It is a flowchart which shows operation | movement of the centralized management apparatus 10d which concerns on Embodiment 5 of this invention.

Embodiment 1 FIG.
Embodiments of a centralized management apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram showing a management system 1 according to Embodiment 1 of the present invention. Based on this FIG. 1, the centralized management apparatus 10 is demonstrated. As shown in FIG. 1, the management system 1 includes a plurality of refrigeration / air conditioning devices 2 and a centralized management device 10, and is provided in a building 8, for example. The building 8 is, for example, a two-story building, with a room A on the first floor and a room B and a room C on the second floor.

In room A, four coolers which are indoor side devices of the refrigerating and air-conditioning equipment 2 are installed, and a heat-sensing fire alarm 4 is also installed. The device numbers of the four refrigeration / air conditioning devices 2 in the room A are 101, 102, 103, and 104, respectively. In the room B, three indoor units that are indoor side devices of the refrigeration air conditioner 2 are installed. The device numbers of the three refrigeration and air conditioning devices 2 in the room B are 201, 202, and 203, respectively. In the room C, three indoor units that are indoor side devices of the refrigeration air conditioner 2 are installed. The device numbers of the three refrigeration / air conditioning devices 2 in the room C are 301, 302, and 303, respectively.

The management system 1 includes a notification unit 6 that notifies the operation state of the refrigeration and air conditioning equipment 2. The notification unit 6 may be a monitor or a speaker, for example. Moreover, in this Embodiment 1, the alerting | reporting part 6 is provided in the centralized management apparatus 10, However, It is good also as another apparatus. Each of the plurality of refrigeration / air-conditioning devices 2 includes a temperature detection unit 3 that detects the temperature. Here, the temperature detection part 3 is provided in the indoor side apparatus of the refrigeration air conditioning apparatus 2, and detects the temperature of the inhaled indoor air.

FIG. 2 is a block diagram showing the centralized management apparatus 10 according to the first embodiment of the present invention. The centralized management device 10 is provided on the outer wall of the building 8 and controls the operation of the plurality of refrigeration air conditioners 2. The centralized management device 10 manages the room temperature based on the set room temperature set in each refrigeration air-conditioning device 2 and the temperature detected by the temperature detection unit 3 included in each refrigeration air-conditioning device 2. In addition, the temperature detected by the temperature detection unit 3, the current operation state, and the like are periodically transmitted to the central management device 10. As shown in FIG. 2, the centralized management apparatus 10 includes a storage unit 18, a threshold determination unit 11, a position specifying unit 12, a stop determination unit 14, and a notification control unit 13.

The storage means 18 stores the installation positions of the plurality of refrigeration air conditioners 2. In addition, the temperature detected by the temperature detection unit 3 is sequentially stored in the storage unit 18. The threshold value determination means 11 determines whether or not the difference between the set room temperature set in the refrigeration air conditioner 2 from the room temperature detected by each temperature detection unit 3 exceeds the abnormal threshold temperature. The abnormality threshold temperature is obtained by adding 35K to the set room temperature, and is a temperature serving as a reference for notifying an abnormality that requires an emergency. In this case, the level of abnormality information is set to the abnormality level. Here, the set room temperature is 25 ° C., for example.

Furthermore, the threshold determination means 11 determines whether or not the difference exceeds an alarm threshold temperature lower than the abnormal threshold temperature. The alarm threshold temperature is such that the level of abnormality information is lower than the abnormality threshold temperature. For example, a first alarm threshold temperature and a second alarm threshold temperature are set. The first alarm threshold temperature is a value obtained by adding 10K to the set room temperature, for example, a temperature serving as a reference for prompting attention. In this case, the level of abnormality information is set as a warning level. The second alarm threshold temperature is obtained by adding 30K to the set room temperature, for example, a temperature serving as a reference for alarm notification. In this case, the level of abnormality information is set as an alarm level.

When the threshold determination unit 11 determines that the difference exceeds the abnormal threshold temperature, the position specifying unit 12 specifies the position where the temperature abnormality has occurred based on the installation position of the refrigeration air conditioner 2 stored in the storage unit 18. To do. For example, in the room A, when a fire occurs from the heat source 5 whose temperature significantly exceeds the set room temperature set by the refrigeration air conditioner 2, the temperature detected by the temperature detection unit 3 is among the plurality of refrigeration air conditioners 2. First, it is estimated that a fire has occurred in the vicinity of the refrigerating and air-conditioning equipment 2 that has exceeded the abnormal threshold temperature. In this way, the position specifying unit 12 specifies the position where the temperature abnormality such as the heat source 5 has occurred.

When the threshold determination unit 11 determines that the difference exceeds the abnormal threshold temperature, the notification control unit 13 notifies the notification unit 6 that a temperature abnormality has occurred. Further, the notification control means 13 notifies the notification section 6 that the room temperature has increased when the threshold determination means 11 determines that the difference exceeds the alarm threshold temperature. The stop determination unit 14 determines whether or not to stop the plurality of refrigeration air conditioners 2 based on the position specified by the position specifying unit 12. The stop determination unit 14 may be configured to determine to stop the refrigeration air conditioner 2 in a range less than a predetermined distance from the refrigeration air conditioner 2 for which the difference is determined to be greater than the abnormal threshold temperature by the threshold determination unit 11, for example. It is determined that only the refrigerating and air-conditioning equipment 2 whose difference exceeds the abnormal threshold temperature is stopped.

FIG. 3 is a graph showing the temperature detected by the temperature detector 3 in Embodiment 1 of the present invention. In FIG. 3, the horizontal axis is the device number of the refrigeration and air conditioning equipment 2, and the vertical axis is a subtraction value obtained by subtracting the set room temperature set from the room temperature (room temperature−set room temperature). The room temperature is a temperature detected by the temperature detector 3. Further, FIG. 3 changes as time elapses. As shown in FIG. 3, when the temperature of the refrigerating and air-conditioning equipment 102 first exceeds the first alarm threshold temperature (one-dot chain line), a fire occurs near the refrigerating and air-conditioning equipment 102 by the position specifying means 12 as described above. It is estimated that Along with this, the notification control means 13 displays a warning message such as “The room temperature is increasing in the vicinity of the refrigeration air-conditioning device 102” on the operation screen of the notification unit 6, for example, the centralized management device 10. Display. As a result, the system administrator or the like can recognize that an abnormal state has occurred around the refrigeration air-conditioning apparatus 102 and that it is at the warning level.

Next, when the temperature of the refrigerating and air-conditioning equipment 102 exceeds the second alarm threshold temperature (broken line), the notification control means 13 displays “Refrigeration air-conditioning equipment 102 on the operation screen of the notifying unit 6, for example, the centralized management device 10. The refrigeration and air conditioning equipment 102 will be stopped because the room temperature has abnormally increased in the vicinity of "." As a result, the system administrator or the like can recognize that the level of abnormality information around the refrigeration and air conditioning equipment 102 has increased and has shifted to the alarm level. Further, the stop determination unit 14 determines to stop the refrigerating and air-conditioning apparatus 102 based on the position specified by the position specifying unit 12. Then, the refrigeration and air conditioning equipment 102 is stopped.

When the temperature of the refrigerating and air-conditioning equipment 102 exceeds the abnormal threshold temperature (solid line), the occurrence of a fire is suspected, and the notification control means 13 displays “freezing” on the operation screen of the notification unit 6, for example, the centralized management device 10. An emergency message such as “A fire has occurred around the air conditioner 102” is displayed. As a result, the system administrator or the like can recognize that the level of abnormality information is an abnormal level and that a fire has occurred around the refrigeration and air conditioning equipment 102. Further, the stop determination unit 14 determines to stop all the refrigeration air conditioners 2 in the room A in which the refrigeration air conditioner 102 is installed, based on the position specified by the position specifying unit 12. Thereby, all the refrigerating and air-conditioning apparatuses 101, 102, 103, and 104 in the room A are stopped. Therefore, since the circulation of the air by the operation of the refrigeration air conditioner 2 is suppressed, the expansion of the fire can be suppressed.

FIG. 4 is a flowchart showing the operation of the centralized management apparatus 10 according to the first embodiment of the present invention. Next, the operation of the management system 1 according to the first embodiment will be described. As shown in FIG. 4, first, the room temperature is detected by the temperature detector 3 (step ST1). Next, it is determined by the threshold determination means 11 whether or not the difference exceeds the abnormal threshold temperature (step ST2). When the difference is equal to or lower than the abnormal threshold temperature (No in step ST2), the process returns to step ST1. On the other hand, when the difference is larger than the abnormal threshold temperature (Yes in step ST2), the position specifying unit 12 specifies the position where the abnormal temperature has occurred (step ST3). After that, the stop determination unit 14 determines whether or not to stop the refrigeration air-conditioning equipment 2 based on the specified position. For example, all the refrigerations in the room where the refrigeration air-conditioning equipment 2 having a difference larger than the abnormal threshold temperature is installed. The air conditioner 2 is stopped (step ST4).

According to the first embodiment, the occurrence of a temperature abnormality is detected based on the set room temperature of the refrigeration air conditioner 2. For this reason, in the space set to room temperature according to the use, generation | occurrence | production of temperature abnormality is accurately detectable. If it is attempted to detect the occurrence of a temperature abnormality with a thermal sensor as in the past, the threshold temperature of the thermal sensor is fixed at, for example, 65 ° C. The occurrence of temperature abnormality is not detected until. In this case, it becomes difficult to detect the fire inside the freezer warehouse at an early stage. On the other hand, since the first embodiment detects the occurrence of temperature abnormality based on the set room temperature, the occurrence of temperature abnormality occurs in a space where the set room temperature is low, such as a freezer warehouse, than in a space where the set room temperature is room temperature. The threshold for detecting is low. For this reason, the fire inside a freezer warehouse can be detected at an early stage. Further, since the occurrence of temperature abnormality can be detected with high accuracy, it is easy to specify the position where the abnormal temperature has occurred with high accuracy. Further, since information from the outside is unnecessary, the cost can be suppressed.

In addition, since the centralized management device 10 constantly detects temperature changes by the plurality of refrigeration and air conditioning devices 2, it is possible to confirm in detail the status of a building or the like in which the centralized management device 10 is provided. As a result, it is possible to obtain information necessary for fire fighting activities performed in the event of a fire, such as whether or not an initial fire extinguishing is possible using a fire extinguisher and securing an evacuation route. Moreover, the position where the abnormal temperature has occurred is specified using the temperature detection unit 3 included in the refrigeration and air-conditioning equipment 2. Since the refrigerating and air-conditioning equipment 2 is provided in various places such as a room, it is easy to specify the position where the abnormal temperature has occurred. Moreover, the stop determination means 14 determines whether to stop the refrigeration air conditioning equipment 2 using the temperature detection part 3 which the refrigeration air conditioning equipment 2 has. For this reason, in addition to the refrigerating and air-conditioning equipment 2, a separate means for detecting abnormality information is not required. Therefore, even if the introduction cost of the management system 1 is reduced, the expansion of a fire or the like can be suppressed.

In the first embodiment, the heat-sensing fire alarm 4 is installed in the room A, but the heat source 5 generated in the vicinity of the refrigeration air conditioner 102 is far from the fire alarm 4. The heat of the heat source 5 is transmitted to the surrounding air, and the temperature of the surrounding air rises. Here, the amount of heat transfer in the air is inversely proportional to the square of the distance. Therefore, since heat is slowly transmitted to the air around the fire alarm 4, the fire alarm 4 hardly senses the heat source 5. However, the management system 1 uses the temperature detection unit 3 included in the plurality of refrigeration / air-conditioning devices 2 and the refrigeration / air-conditioning devices 2 are provided at various locations in the room, so that the heat source 5 is easily sensed.

Further, since the position where the temperature abnormality has occurred can be specified by the position specifying means 12, it is easy for the system administrator or the like to specify the inspection range. For this reason, it is easy to perform maintenance and inspection, and it is possible to deal with it quickly. For the fire alarm 4 or the smoke detector, installation standards such as the distance from the air outlet of the wall surface and the refrigeration air conditioner 2 are limited. For this reason, in a system configured only with the fire alarm 4 or the smoke detector, it is difficult to specify the area even if an abnormal temperature state occurs.

Furthermore, when the threshold determination unit 11 determines that the difference exceeds the abnormality threshold temperature, the notification control unit 13 that notifies the notification unit 6 that notifies the operation state of the refrigeration air conditioner 2 that the temperature abnormality has occurred is further performed. Prepare. As a result, the system administrator or the like can recognize that an abnormal state has occurred.

Furthermore, the threshold determination unit 11 determines whether or not the difference exceeds an alarm threshold temperature lower than the abnormal threshold temperature. The notification control unit 13 determines whether the difference is the alarm threshold temperature by the threshold determination unit 11. When it is determined that the temperature is higher, the notification unit 6 is notified that the room temperature has increased. Thereby, for example, it is possible to call attention at the initial stage of fire occurrence. Therefore, the expansion of damage due to fire can be suppressed at an early stage. In the fire alarm 4, for example, only one-step control is performed in which a contact signal is issued when a temperature detection unit provided in the fire alarm 4 detects 60 ° C. On the other hand, the first embodiment can perform stepwise reporting according to the temperature detected by the temperature detection unit 3.

In the first embodiment, the temperature detection unit 3 is provided in the indoor side device of the refrigeration air conditioner 2 and detects the temperature of the sucked indoor air, but may be a thermopile, for example. Using the thermopile, for example, by dividing the target area into a grid and detecting the temperature of a plurality of areas, the management system 1 can determine whether or not an abnormality has occurred in smaller area units. Thereby, useful information can be obtained when the position of the heat source 5 is specified and the heat source 5 is treated.

Moreover, in this Embodiment 1, although the stop of the refrigerating and air-conditioning apparatus 2 is determined based on the temperature detected by the temperature detecting unit 3 of the refrigerating and air-conditioning apparatus 2, the detection from the smoke detection type fire alarm 4 is performed. Information may be used. In this case, the stop of the refrigerating and air-conditioning equipment 2 is determined from two viewpoints of whether smoke has arrived and whether the room temperature has increased. And, for example, in a room where the temperature has not risen but smoke has arrived, a command to operate a smoke exhaust device (not shown) is issued, and the temperature has not risen and the smoke has not reached A command to close a fire door (not shown) provided at the boundary is issued. Thereby, the accuracy of crisis management of the management system 1 is improved.

Embodiment 2. FIG.
FIG. 5 is a schematic diagram showing a management system 1a according to Embodiment 2 of the present invention. The second embodiment is different from the first embodiment in that the centralized management device 10a has an estimation unit 16. In the second embodiment, the same parts as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. The description will focus on differences from the first embodiment.

As shown in FIG. 5, the storage means 18 stores area information obtained by dividing the room into a plurality of areas. For example, each coordinate of an area divided into 12 rooms is stored in the storage means 18. The plurality of refrigerating and air-conditioning apparatuses 2 are provided in any of the areas. For example, the upper two refrigerating and air-conditioning systems having a large value obtained by subtracting the set room temperature from the temperature detected by the temperature detection unit 3 in the areas A1 and C3. Device 2 is installed.

FIG. 6 is a block diagram showing a centralized management apparatus 10a according to Embodiment 2 of the present invention. As shown in FIG. 6, the estimation means 16 determines the temperature of each area based on the distance to the area where the refrigeration air conditioner 2 is installed and the indoor temperature detected by the temperature detection unit 3 included in the refrigeration air conditioner 2. Is estimated. As described above, the amount of heat transferred from the heat source 5 is inversely proportional to the square of the distance and is proportional to the temperature difference. That, _{T 1} the temperature of the zone A1, the temperature _{T 2} of the zone A2, _{L 1} the distance to the area A1, and the distance to the area A2 and _{L 2,} the temperature _{T 0} of the predetermined area, the following equation ( Calculated from 1).

[Equation 1]
(T ₀ -T ₁ ) :( T ₀ -T ₂ ) = 1 / (L ₁ ² ): 1 / (L ₂ ² ) (1)

Then, when the formula (1) is transformed, the following formula (2) is obtained.

[Equation 2]
T ₀ = (L ₁ ² T ₁ -L ₂ ² T ₂ ) / (L ₁ ² -L ₂ ² ) (2)

Estimating means 16 calculates the T ₀ in all areas, to estimate the temperature of each zone. Further, the position specifying means 12 specifies that a temperature abnormality has occurred in an area where the temperature estimated by the estimating means 16 is the highest. That is, the position specifying means 12, T ₀ is determined that a fire has occurred in the area of maximum.

FIG. 7 is a flowchart showing the operation of the centralized management apparatus 10a according to the second embodiment of the present invention. Next, the operation of the management system 1a according to the second embodiment will be described. As shown in FIG. 7, first, the room temperature is detected by the temperature detector 3 (step ST1). Next, the temperature of each area is estimated by the estimation means 16 (step ST11). Thereafter, it is determined by the threshold determination means 11 whether or not the difference between the areas exceeds the abnormal threshold temperature (step ST2). When the difference is equal to or lower than the abnormal threshold temperature (No in step ST2), the process returns to step ST1. On the other hand, when the difference is larger than the abnormal threshold temperature (Yes in step ST2), the position specifying unit 12 specifies the position where the abnormal temperature has occurred (step ST3). After that, the stop determination unit 14 determines whether or not to stop the refrigeration air-conditioning equipment 2 based on the specified position. For example, all the refrigerations in the room where the refrigeration air-conditioning equipment 2 having a difference larger than the abnormal threshold temperature is installed. The air conditioner 2 is stopped (step ST4).

According to the second embodiment, the storage means 18 stores the area information obtained by dividing the room into a plurality of areas, and the distance between each area, the refrigerating and air conditioning equipment 2 and the position of the refrigerating and air conditioning equipment 2 are stored. Based on the room temperature, it further includes estimation means 16 for estimating the temperature of each section stored in the storage means 18, and the threshold value determination means 11 is set to the temperature estimated by the estimation means 16 and the refrigeration air conditioner 2. It is determined whether or not the difference from the set room temperature exceeds the abnormal threshold temperature. Thereby, even if the heat source 5 of the fire is generated in a place away from the refrigeration air conditioner 2, the position of the heat source 5 of the fire can be specified. Therefore, the accuracy of specifying the position of the heat source 5 of the fire can be improved. Moreover, since the several refrigeration air conditioning equipment 2 has always detected the temperature change of the object area, the centralized management apparatus 10a can confirm the condition of each area in detail. As a result, it is possible to obtain information necessary for fire fighting activities performed in the event of a fire, such as whether or not an initial fire extinguishing is possible using a fire extinguisher and securing an evacuation route.

Embodiment 3 FIG.
FIG. 8 is a schematic diagram showing the display unit 7 according to Embodiment 3 of the present invention. The third embodiment is different from the first embodiment in that it includes a display unit 7 that displays the installation position of the refrigeration and air conditioning equipment 2. In the third embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted. The description will focus on differences from the first embodiment.

As shown in FIG. 8, the display unit 7 displays a plan view of the first floor and the second floor of the building 8. The display unit 7 displays a room, a door, and a staircase, and the refrigeration and air conditioning equipment 2 is displayed as an icon based on the internal shape of the building 8 and the arrangement information of the refrigeration and air conditioning equipment 2 input in advance. . The display unit 7 may be integrated with the notification unit 6.

FIG. 9 is a block diagram showing the centralized management apparatus 10b according to the third embodiment of the present invention. As shown in FIG. 9, the centralized management apparatus 10 b has display control means 15. The display control means 15 emphasizes and displays the position specified by the position specifying means 12. For example, the display control means 15 colors and displays the position specified by the position specifying means 12. When the temperature rise as shown in FIG. 2 occurs, the icon of the refrigeration air-conditioning equipment 102 that is at the alarm level exceeding the second alarm threshold temperature is colored orange, and the temperature is the first alarm threshold temperature. The icons of the refrigeration and air conditioning equipments 101 and 103 that are beyond the warning level are colored yellow. Further, when the temperature exceeds the abnormal threshold temperature and becomes an abnormal level, the icon is colored red.

According to the third embodiment, the display unit 7 that displays the installation position of the refrigeration air conditioner 2 further includes the display control means 15 that changes the display according to the room temperature at the position of the refrigeration air conditioner 2. Specifically, the display control means 15 is colored to emphasize the icon display. Thereby, it becomes easier to specify the position where the temperature abnormality has occurred. Moreover, since the visibility of the position where the temperature abnormality has occurred is improved, it is easy to visually recognize the state of damage expansion.

Further, for example, as a route for evacuating from the room B to the outside, it is possible to avoid the door 204 immediately above the refrigeration air conditioner 102 and determine that the route for evacuating in the order of the door 205 → the door 304 → the door 306 is safe. . Furthermore, it can be determined that when entering the room A to perform fire fighting activities, it is less dangerous to enter the room through the door 106 located closer to the refrigerating and air-conditioning equipment 104. In this way, information necessary for actions to be taken when a fire occurs can be acquired accurately.

Embodiment 4 FIG.
FIG. 10 is a block diagram showing a centralized management apparatus 10c according to Embodiment 4 of the present invention. The fourth embodiment is different from the third embodiment in that the central management device 10c includes a calculation unit 17. In the fourth embodiment, the same parts as those in the first to third embodiments are denoted by the same reference numerals, and the description thereof will be omitted. The description will focus on the differences from the first to third embodiments.

As shown in FIG. 10, the calculation means 17 calculates the distance between the position specified by the position specification means 12 and the installation positions of the plurality of refrigeration air conditioners 2 stored in the storage means 18. FIG. 11 is a table showing the position of the refrigerating and air-conditioning apparatus 2 according to Embodiment 4 of the present invention. As shown in FIG. 11, the coordinates of a plurality of refrigeration air conditioners 2 are stored in the storage unit 18. Then, the calculation means 17 calculates the distance between the position specified by the position specifying means 12 and the installation position of the refrigeration air conditioner 2. In addition, the stop determination unit 14 determines to stop the refrigeration and air conditioning equipment 2 when the distance calculated by the calculation unit 17 is less than the threshold distance.

When the temperature rise as shown in FIG. 2 occurs, the distance between the refrigeration air conditioning equipment 102 whose temperature exceeds the second alarm threshold temperature and is at the alarm level and the other refrigeration air conditioning equipment 2 is calculated. When the temperature exceeds the abnormal threshold temperature and shifts to an abnormal level, the refrigerating and air conditioning devices 101, 102, and 104 in the same room A as the refrigerating and air conditioning device 102 are stopped. Furthermore, the refrigeration air conditioning equipment 2 whose distance from the refrigeration air conditioning equipment 102 is less than the threshold distance is also urgently stopped. The threshold distance is 10 m, for example, and the refrigeration and air-conditioning equipment 201, 202, 203, 302 is urgently stopped by an emergency stop signal from the centralized management device 10c. The calculating means 17 may be configured to calculate the distance for each zone as in the second embodiment.

FIG. 12 is a flowchart showing the operation of the centralized management apparatus 10c according to the fourth embodiment of the present invention. Next, the operation of the management system 1c according to the fourth embodiment will be described. As shown in FIG. 12, first, the room temperature is detected by the temperature detector 3 (step ST1). Next, it is determined by the threshold determination means 11 whether or not the difference exceeds the abnormal threshold temperature (step ST2). When the difference is equal to or lower than the abnormal threshold temperature (No in step ST2), the process returns to step ST1. On the other hand, when the difference is larger than the abnormal threshold temperature (Yes in step ST2), the position specifying unit 12 specifies the position where the abnormal temperature has occurred (step ST3).

Thereafter, the calculating means 17 calculates the distance between the position specified by the position specifying means 12 and the installation position of the refrigerating and air-conditioning equipment 2 (step ST31). Then, it is determined whether or not the distance calculated by the calculation means 17 is less than the threshold distance (step ST32). If the distance calculated by the calculation means 17 is equal to or greater than the threshold distance (No in step ST32), the process returns to step ST1. On the other hand, when the distance calculated by the calculation means 17 is less than the threshold distance (Yes in step ST32), the stop determination means 14 determines that the refrigeration / air conditioning equipment 2 is stopped and stops (step ST4).

According to the fourth embodiment, the centralized management device 10c calculates the distance between the position specified by the position specifying means 12 and the installation positions of the plurality of refrigeration air conditioners 2 stored in the storage means 18. The stop determination unit 14 determines to stop the refrigeration / air conditioning equipment 2 when the distance calculated by the calculation unit 17 is less than the threshold distance. Thereby, the refrigerating and air-conditioning equipment 2 installed at a position where there is a risk of fire spread when a fire occurs is preferentially stopped. Therefore, it is possible to prevent the spread of fire due to the circulation of air, and to suppress the amount of toxic gas generated due to leakage of the refrigerant gas. That is, the spread of damage can be suppressed.

Embodiment 5 FIG.
FIG. 13 is a schematic diagram showing a management system 1d according to Embodiment 3 of the present invention. The fifth embodiment is different from the fourth embodiment in that the management system 1d includes a refrigeration / air conditioning device 2 having a different application. The centralized management apparatus 10c is the same as the centralized management apparatus 10c of the fourth embodiment. In the fifth embodiment, the same parts as those in the first to fourth embodiments are denoted by the same reference numerals, and the description thereof will be omitted. The description will focus on the differences from the first to fourth embodiments.

As shown in FIG. 13, the building 8 is a low-temperature warehouse, the room A is an employee office, the room B is a frozen food storage room, and the room C is a server room. In the room A, four coolers that are indoor side devices of the refrigerating and air-conditioning equipment 2 are installed, and a heat-sensitive fire alarm 4 is also installed. The device numbers of the four refrigeration and air conditioning devices 2 in the room A are 401, 402, 403, and 404, respectively. In the room B, three indoor units that are indoor side devices of the refrigeration air conditioner 2 are installed. The device numbers of the three refrigeration air conditioners 2 in the room B are set to 501, 502, and 503, respectively. In the room C, three indoor units that are indoor side devices of the refrigeration air conditioner 2 are installed. The device numbers of the three refrigeration air-conditioning devices 2 in the room C are 601, 602, and 603, respectively.

FIG. 14 is a table showing the uses of the refrigeration air conditioning equipment 2 stored in the storage means 18 in the fifth embodiment of the present invention. As shown in FIG. 14, in the fifth embodiment, the storage unit 18 of the centralized management device 10d stores whether the plurality of refrigeration / air-conditioning apparatuses 2 are for people or objectives. And the stop judgment means 14 judges that the refrigerating air-conditioning equipment 2 is stopped when the refrigerating air-conditioning equipment 2 is for people. Furthermore, when the refrigerating and air-conditioning equipment 2 is for the objective, the stop judging means 14 judges that the refrigerating and air-conditioning equipment 2 is stopped when the distance calculated by the calculating means 17 is less than the threshold distance.

In Pattern 1, the usage is for offices and people, and when a fire occurs in another room, all the refrigerating and air-conditioning devices 2 are forcibly stopped. In the pattern 2, the usage is for a refrigerator and an objective, and when a fire occurs in another room, the refrigeration air-conditioning equipment 2 that is less than a predetermined distance from the heat source 5 is forcibly stopped. In pattern 3, the usage is for server rooms and objectives, and when a fire occurs in another room, the operation of the refrigerating and air-conditioning apparatus 2 is continued until the fire expands and the fire is detected in the own room.

FIG. 15 is a flowchart showing the operation of the centralized management apparatus 10d according to the fifth embodiment of the present invention. Next, the operation of the management system 1d according to the fifth embodiment will be described. As shown in FIG. 15, first, the room temperature is detected by the temperature detector 3 (step ST1). Next, it is determined by the threshold determination means 11 whether or not the difference exceeds the abnormal threshold temperature (step ST2). When the difference is equal to or lower than the abnormal threshold temperature (No in step ST2), the process returns to step ST1. On the other hand, when the difference is larger than the abnormal threshold temperature (Yes in step ST2), the position specifying unit 12 specifies the position where the abnormal temperature has occurred (step ST3).

Thereafter, the calculation means 17 calculates the distance between the position specified by the position specifying means 12 and the installation position of the refrigerating and air-conditioning equipment 2 (step ST41). And it is determined by the stop determination means 14 whether the refrigeration air conditioning apparatus 2 is for people, or for objectives (step ST42). When the refrigerating and air-conditioning equipment 2 is for people, the stop judging means 14 judges that the refrigerating and air-conditioning equipment 2 is to be stopped, and is stopped (step ST4). On the other hand, when the refrigerating and air-conditioning equipment 2 is for an objective, it is further determined whether or not the distance calculated by the calculating means 17 is less than the threshold distance (step ST43). If the distance calculated by the calculation means 17 is equal to or greater than the threshold distance (No in step ST43), the process returns to step ST1. On the other hand, when the distance calculated by the calculation means 17 is less than the threshold distance (Yes in step ST43), the stop determination means 14 determines that the refrigeration / air conditioning equipment 2 is stopped and stops (step ST4).

In the fifth embodiment, the room A is set to the pattern 1, the room B is set to the pattern 2, and the room C is set to the pattern 3. In the room A, when the temperature detected by the temperature detection unit 3 of any of the refrigeration air conditioners 2 exceeds the abnormal threshold temperature, the room A is set to the pattern 1, and thus the refrigeration air conditioners installed in the room A 401, 402, 403, 404 are urgently stopped. Thereby, the spread of fire is suppressed.

Here, since the room B is set to the pattern 2, only the refrigeration air-conditioning equipment 2 whose distance from the heat source 5 is less than a predetermined distance is stopped as in the fourth embodiment, and the other refrigeration air-conditioning equipment. 2 continues operation. Thereby, the temperature fall of frozen food can be suppressed as much as possible. In addition, since the room C is set to the pattern 3, the operation of the refrigeration and air conditioning equipment 2 is continued until a fire is detected in the room. That is, when the distance from the room to the heat source becomes zero, the operation of the refrigerating and air-conditioning equipment 2 is stopped. Thereby, since the server provided in the server room C is cooled as much as possible, an increase in the amount of damage due to the failure of the server can be suppressed.

According to the fifth embodiment, the storage unit 18 stores whether or not the plurality of refrigeration air conditioning devices 2 are for people or objectives, and the stop determination unit 14 is for the refrigeration air conditioning device 2 for people. In some cases, it is determined that the refrigerating and air-conditioning equipment 2 is stopped. In addition, when the refrigerating and air conditioning equipment 2 is for an objective, the stop judging means 14 judges that the refrigerating and air conditioning equipment 2 is stopped when the distance calculated by the calculating means 17 is less than the threshold distance. Thereby, when a small-scale fire occurs, it does not stop to the refrigerating and air-conditioning equipment 2 which does not need to stop. Thereby, like the refrigeration air conditioner 2 for objectives, it is suppressed that the stored item which needs cooling deteriorates, and it also suppresses that the apparatus which requires cooling fails.

Conventionally, in areas where temperature management of installed items and stored items such as server rooms and chemical storages is necessary, if the refrigeration and air-conditioning equipment 2 stops due to a fire, the room temperature rises, causing damage to the equipment, There is a risk of secondary damage such as deterioration. On the other hand, according to the fifth embodiment, as described above, the operation of the refrigerating and air-conditioning equipment 2 can be continued as much as possible. In addition, the range where the other refrigeration air conditioning equipment 2 stops at the time of fire detection may be registered in advance. The range in which the refrigerating and air-conditioning equipment 2 stops is, for example, the same room, the same floor, or the like. The refrigeration and air conditioning equipment 2 that is out of the range to be stopped continues to operate until a fire is detected within the range in which the own unit stops.

1, 1a, 1b, 1c, 1d management system, 2 refrigeration and air conditioning equipment, 3 temperature detection unit, 4 fire alarm, 5 heat source, 6 notification unit, 7 display unit, 8 building, 10, 10a, 10b, 10c, 10d Central control device, 11 threshold determination means, 12 position specifying means, 13 notification control means, 14 stop determination means, 15 display control means, 16 estimation means, 17 calculation means, 18 storage means, 101, 102, 103, 104, 201 202, 203, 301, 302, 303, 401, 402, 403, 404, 501, 502, 503, 601, 602, 603 Refrigeration and air conditioning equipment.

Claims (10)

In a centralized management device that controls the operation of a plurality of refrigeration and air-conditioning equipment having a temperature detection unit that detects a room temperature,
The centralized management device is:
Storage means for storing the installation position of the refrigerating and air-conditioning equipment;
Threshold determination means for determining whether or not the difference between the room temperature detected by the temperature detection unit and the set room temperature set in the refrigeration air conditioner exceeds an abnormal threshold temperature;
A position specifying means for specifying a position where a temperature abnormality has occurred based on an installation position of the refrigeration air conditioner stored in the storage means when the threshold determination means determines that the difference exceeds the abnormality threshold temperature; ,
Centralized management device comprising The centralized management device according to claim 1, further comprising a stop determination unit that determines whether or not to stop the plurality of refrigeration and air conditioning devices based on the position specified by the position specifying unit. A calculation means for calculating a distance between the position specified by the position specifying means and the installation positions of the plurality of refrigeration air conditioners stored in the storage means;
The stop determination means is
The centralized management device according to claim 2, wherein when the distance calculated by the calculating means is less than a threshold distance, it is determined that the refrigeration / air-conditioning equipment is to be stopped. The storage means
Storing whether the plurality of refrigerating and air-conditioning devices are for people or for an object;
The stop determination means is
The centralized management apparatus according to claim 2 or 3, wherein when the refrigeration / air-conditioning equipment is for people, the refrigeration / air-conditioning equipment is determined to be stopped. The stop determination means is
The subordinate to claim 3, wherein when the refrigerating and air-conditioning equipment is for an objective, it is determined to stop the refrigerating and air-conditioning equipment when the distance calculated by the calculating means is less than the threshold distance. Centralized management device. The storage means
It stores area information that divides the room into multiple areas.
Based on each area, the distance to the refrigeration and air conditioning equipment and the indoor temperature of the position of the refrigeration and air conditioning equipment, further comprising an estimation means for estimating the temperature of each area stored in the storage means,
The threshold determination means includes
6. The method according to claim 1, wherein it is determined whether or not a difference between the temperature estimated by the estimating means and a set room temperature set in the refrigeration / air-conditioning equipment exceeds an abnormal threshold temperature. Centralized management device. The information control means which makes the information part which notifies the operation state of the refrigerating and air-conditioning equipment that the temperature abnormality has occurred when the difference is determined to be higher than the abnormality threshold temperature by the threshold determination means. The centralized management apparatus according to any one of 1 to 6. The threshold determination means includes
Whether the difference exceeds an alarm threshold temperature lower than the abnormal threshold temperature,
The notification control means includes
8. The centralized management apparatus according to claim 7, wherein when the difference is determined to be higher than the alarm threshold temperature by the threshold determination means, the notification unit is notified that the room temperature has increased. The centralized management device is:
The concentration according to any one of claims 1 to 8, further comprising display control means for changing a display in accordance with a room temperature at the position of the refrigerating and air-conditioning equipment in a display unit that displays an installation position of the refrigerating and air-conditioning equipment. Management device. The temperature detector is
The centralized management device according to any one of claims 1 to 9, wherein the centralized management device is provided in an indoor side device of the refrigeration air conditioner and detects a temperature of the sucked indoor air.

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