JP6363453B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner capable of introducing outdoor air into a room.

  For example, the air conditioner described in Patent Document 1 supplies outdoor air toward the upper side of a room during heating operation, and compares the temperature of outdoor air with the temperature of room air during cooling operation. Determine the supply direction (blowing direction).

JP-A-6-249785

  An object of the present invention is to provide an efficient outdoor air supply method in an air conditioner capable of introducing outdoor air into a room.

  In order to achieve the above object, the present invention provides at least one device (hereinafter referred to as a heat generating device (hereinafter referred to as heat generating device)) among information communication technology devices (hereinafter referred to as ICT devices) and power supply devices for supplying power to the ICT devices. 1).) An indoor air conditioner (6) having an intake port (6A) for sucking indoor air and cooling the sucked air and supplying it to the room. And an air direction adjusting section (7) provided in the outside air introducing section (4) for introducing the outdoor air and for blowing the outdoor air toward the intake port (6A).

  Thereby, in this invention, outdoor air is supplied to an air-conditioning object area | region via an indoor air conditioner (6). Therefore, compared with the case where outdoor air is supplied directly to an air-conditioning target area without going through the indoor air conditioner (6), it is possible to suppress the occurrence of uneven temperature distribution in the air-conditioning target area.

  Incidentally, the reference numerals in parentheses for each of the above means are examples showing the correspondence with the specific means described in the embodiments described later, and the present invention is indicated by the reference numerals in the parentheses of the above respective means. It is not limited to specific means.

1 is a conceptual diagram of an air conditioner according to a first embodiment of the present invention. A and B are operation | movement explanatory drawings of the air conditioner which concerns on 1st Embodiment of this invention. It is a flowchart which shows the action | operation of the air conditioning apparatus which concerns on 1st Embodiment of this invention. A and B are graphs showing temperature changes of the air conditioner according to the first embodiment of the present invention. A and B are graphs showing temperature changes of the air conditioner according to the first embodiment of the present invention. A and B are operation | movement explanatory drawings of the air conditioner which concerns on 1st Embodiment of this invention. A and B are graphs showing temperature changes of the air conditioner according to the first embodiment of the present invention. It is a figure which shows the action | operation of the wind direction guide plate 7A. It is a conceptual diagram of the air conditioning apparatus which concerns on 2nd Embodiment of this invention.

  The “embodiment of the invention” described below shows an example of the embodiment. In other words, the invention specific items described in the claims are not limited to the specific means and structures shown in the following embodiments.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that at least one member or part described with at least a reference numeral is provided, except for cases where “plural”, “two or more” and the like are omitted.

(First embodiment)
1. Configuration of Air Conditioner In the present embodiment, the present invention is applied to an air conditioner that performs air conditioning in a room such as a server room or a communication equipment room.

  That is, the air conditioner according to the present embodiment supplies cold air to information communication technology equipment (hereinafter referred to as ICT equipment) and power supply equipment (hereinafter referred to as heat generating equipment) installed in a server room or the like. To cool the heat generating devices.

  The power supply device refers to a storage battery or an uninterruptible power supply for supplying power to the ICT device. In the present embodiment, ICT equipment is mainly assumed as the heat generating equipment. In the following description, the ICT device is described as a heat generating device.

  As shown in FIG. 1, the plurality of ICT devices 1 are installed in a room such as a data center room in a state assembled to the rack 3. The rack 3 is configured by a frame-shaped storage shelf in which a metal shelf frame and a column wall are combined.

  One side of the rack 3 is provided with a cold air passage (cold aisle) 3A to which cold air is supplied. After the cool air is supplied to the rack 3 side from a duct space (not shown) provided under the floor of the cool air passage 3A, the cool air passage 3A is supplied from a plurality of cold air outlets (not shown) provided on the floor. To be supplied.

  A cold air outlet is not provided in the passage 3B opposite to the cold air passage 3A across the rack 3. For this reason, the air that has been supplied to the plurality of ICT devices 1 from the cold air passage 3A and has increased in temperature after heat exchange with the ICT devices 1 flows through the passage 3B. That is, the passage 3B is a hot air passage (hot aisle) through which heated air (hot air) flows.

  The indoor air conditioner 6 sucks air in the server room and cools the air, and then supplies the cooled air to the cool air passage 3A as cooling air. On the upper side in the vertical direction of the indoor air conditioner 6, an air inlet 6 </ b> A for sucking room air is provided. For this reason, the indoor air conditioner 6 sucks air from the indoor upper side and cools the air.

  The indoor air conditioner 6 constitutes a vapor compression refrigerator together with an outdoor unit (not shown) disposed outside the room. In the indoor air conditioner 6, an expansion valve, an evaporator, a compressor, a blower, and the like are accommodated. The outdoor unit contains a radiator such as a condenser.

  Incidentally, the number of indoor air conditioners 6 installed in the same room is the number corresponding to the total amount of heat generated in the room estimated by the number of ICT devices 1 and the like. The indoor air conditioner 6 is also referred to as an “ambient (ambient) type air conditioner”.

  The server room is provided with an outside air introduction section 4 for introducing outside air. The outside air introduction unit 4 has a communication port 4A that allows communication between the room and the outside. A filter 4B is provided at the communication port 4A. The filter 4B captures foreign matters such as dust contained in the outdoor air.

  An outside air adjustment unit 5 is provided in the outside air introduction unit 4. The outdoor air adjustment unit 5 adjusts the supply state of outdoor air supplied to the room. The outside air adjusting unit 5 includes a wind direction adjusting unit 7 and a blower 9. The blower 9 sucks air from outside the room and blows it out into the room.

  The wind direction adjusting unit 7 adjusts the supply direction of air introduced from the outside. The wind direction adjusting unit 7 includes at least one (in this embodiment, a plurality of) wind direction guide plates 7A, an actuator 7B, and the like.

  The wind direction guide plate 7A guides the flow direction of the airflow blown by the blower 9. The actuator 7B controls the operation of each wind direction guide plate 7A, that is, the flow direction of the airflow. The operation of the outside air adjustment unit 5 (actuator 7B and blower 9) is controlled by an air volume control unit provided in the control device 20.

The air volume control unit (control device 20) according to the present embodiment can control each of the plurality of wind direction guide plates 7A independently.
2. 2.1 Control Device The control device 20 includes an indoor air conditioner control unit, a temperature change monitoring unit, an air volume control unit, an outdoor unit control unit, and the like. The indoor air conditioner control unit controls the operation of the indoor air conditioner 6. The outdoor unit controller controls the operation of the outdoor unit.

  The temperature change monitoring unit monitors the temperature distribution state of the air-conditioning target area by the indoor air conditioner 6, that is, the cold air passage 3A. For this reason, the control device 20 is provided with a plurality of sensor input units 20A. Output signals from a plurality of room temperature sensors St1 to Stn for detecting the temperature of room air are input to each sensor input unit 20A.

  In the present embodiment, each of the room temperature sensors St1 to Stn uses a room temperature sensor provided in each intake port 6A as the room temperature sensors St1 to Stn. That is, in the present embodiment, the indoor air conditioner 6 on the right side of the drawing draws air mainly from the region on the right side of the drawing among the air-conditioning target area (cold air passage 3A).

  The indoor air conditioner 6 on the left side of the drawing draws air mainly from the left side of the drawing in the air conditioning target area (cold air passage 3A). For this reason, the temperature detected by the room temperature sensor St1 provided in the intake port 6A on the right side of the drawing changes in conjunction with the air temperature on the right side of the drawing in the cold air passage 3A.

  The detection temperature of the room temperature sensor St2 provided in the intake port 6A on the left side of the paper changes in conjunction with the air temperature on the left side of the paper in the cold air passage 3A. Therefore, the temperature change monitoring unit monitors the temperature distribution state of the cold air passage 3A using the detected temperatures of the room temperature sensors St1 to Stn.

  The air volume control unit adjusts the air volume of the outdoor air supplied to the cold air passage 3A according to the temperature of the cold air passage 3A and the temperature distribution state. Specifically, the angles of the blower 9 and the wind direction guide plate 7A are adjusted using the monitoring result of the temperature change monitoring unit.

  The control device 20 (air volume control unit) has a sensor input unit 20B to which a detection signal of the outdoor temperature sensor ST1 is input. The outdoor temperature sensor ST1 outputs a signal indicating the temperature of the outdoor air introduced from the outdoor air introduction unit 4.

  The control device 20 is configured by a microcomputer having a CPU, a ROM, a RAM, and the like. And in this embodiment, an indoor air conditioner control part, a temperature change monitoring part, an air volume control part, an outdoor unit control part, etc. are implement | achieved by running a program with CPU. The program is stored in advance in a nonvolatile storage unit such as a ROM.

2.2 Outline of Control The control device 20 controls the operation of the indoor air conditioner 6 and the outside air introduction unit 4 so that the temperature of each ICT device 1 falls within a preset temperature range. In the present embodiment, the temperature of each ICT device 1 is indirectly measured using the detected temperatures of the room temperature sensors St1 to Stn.

  That is, in the present embodiment, the operations of the indoor air conditioner 6 and the outside air introduction unit 4 are controlled so that the detected temperatures of the room temperature sensors St1 to Stn fall within a preset temperature range. This is because the temperature detected by the room temperature sensors St1 to Stn can be regarded as a parameter that changes in conjunction with the temperature of each ICT device 1.

<First control mode>
The temperature change monitoring unit monitors the temperature distribution of the cold air passage 3A, and has a region where the absolute value (| dT / dt |) of the temperature increase rate is larger than a preset value (hereinafter referred to as a first specific monitoring region A1). The presence or absence of is detected.

  The air volume control unit supplies the first specific monitoring region A1 when the first specific monitoring region A1 is detected by the temperature change monitoring unit and the temperature of the outdoor air is lower than the temperature of the first specific monitoring region A1. The air volume of the outdoor air to be increased is increased compared to before the first specific monitoring area A1 is detected.

  At this time, the temperature change monitoring unit sets the first specific monitoring area A1 to a temperature difference that is higher than that of the other areas and that has a preset temperature difference (hereinafter, temperature difference ΔT1). Select from the larger areas.

  Specifically, as shown in FIG. 2A, the area AR on the right side of the drawing in the cold air passage 3A has a higher temperature than the area AL on the left side of the drawing, and the temperature difference between the area AR and the area AL is the temperature difference ΔT1. If larger, the temperature change monitoring unit selects the area AR as the first specific monitoring area A1.

  In the present embodiment, each area such as the area AR and the area AL coincides with the air-conditioning target area of each indoor air conditioner 6. That is, the area AR is an air conditioning target area of the indoor air conditioner 6 on the right side of the drawing. An area AL is an air conditioning target area of the indoor air conditioner 6 on the left side of the drawing.

  Hereinafter, when the temperature difference between different air-conditioning target areas is equal to or less than the temperature difference ΔT1, it is referred to as “uniform temperature distribution”. When the temperature difference between different air-conditioning target areas is larger than the temperature difference ΔT1, it is said that “the temperature distribution is not uniform”.

  In addition, the temperature change monitoring unit monitors the temperature distribution in the cold air passage 3A while the absolute value of the temperature decrease rate (| −dT / dt |) is larger than a preset value (hereinafter, the second specific monitoring region A2). )) Is detected.

  The air volume control unit supplies the second specific monitoring region A2 when the second specific monitoring region A2 is detected by the temperature change monitoring unit and the temperature of the outdoor air is equal to or lower than the temperature of the second specific monitoring region A2. The air volume of the outdoor air to be reduced is reduced compared to before the second specific monitoring area A2 is detected.

  At this time, the temperature change monitoring unit selects the second specific monitoring region A2 from regions where the temperature is lower than the other regions and the temperature difference from the other regions is larger than the preset temperature difference. select.

  Specifically, as shown in FIG. 2A, when the region AL in the cold air passage 3A has a lower temperature than the region AR and the temperature difference between the region AR and the region AL is larger than the temperature difference ΔT2, the temperature change The monitoring unit selects the area AL as the second specific monitoring area A2.

  Note that the temperature difference ΔT1 and the temperature difference ΔT2 may be any of the same temperature difference and different temperature differences. When the temperature difference ΔT1 and the temperature difference ΔT2 are different, either the temperature difference ΔT1 or the temperature difference ΔT2 may be a larger temperature difference.

  As described above, when the control device 20 determines that the temperature distribution in the cold air passage 3A is not uniform, the control device 20 executes the first control mode. Then, the air volume control unit according to the present embodiment operates the air direction guide plate 7A while keeping the rotation speed (air flow) of the blower 9 constant, so that the first specific monitoring area A1 and the second specific monitoring area A2 are operated. Change and control outdoor air supply.

  Specifically, when the outside air supply amount to the first specific monitoring area A1 is increased, the air volume control unit guides the introduced outdoor air to the first specific monitoring area A1, as shown in FIG. 2B. Then, the wind direction guide plate 7A is operated. For this reason, the supply amount of outdoor air supplied to areas other than the first specific monitoring area A1 decreases.

  When reducing the amount of outside air supplied to the second specific monitoring area A2, the air volume control unit operates the wind direction guide plate 7A so that the introduced outdoor air is guided to an area other than the second specific monitoring area A2. Let For this reason, the supply amount of outdoor air supplied to areas other than the second specific monitoring area A2 increases.

  At this time, the airflow direction adjustment unit 7 does not directly supply outdoor air to the air conditioning target area (area other than the second specific monitoring area A2), but intake air of the indoor air conditioner 6 responsible for air conditioning of the air conditioning target area. Outdoor air is blown out toward the mouth 6A. For this reason, most of the supplied outdoor air is supplied to the air-conditioning target area via the indoor air conditioner 6.

<Second control mode>
The temperature change monitoring unit monitors the temperature distribution state of the cold air passage 3A, and in the cold air passage 3A, a region where the rate of temperature increase (dT / dt) is greater than a preset first threshold value θ1 (hereinafter, specific monitoring). It is detected whether or not there is a region Bo).

  Then, the air volume control unit changes the outside air adjusting unit 5 as follows when the plurality of specific monitoring regions Bo are detected by the temperature change monitoring unit and the temperature of the outdoor air is lower than the temperatures of the specific monitoring regions Bo. Operate.

  That is, the air volume control unit supplies the air volume of outdoor air to be supplied to a specific monitoring area (hereinafter, referred to as a high increase area BH) having a temperature increase rate larger than a preset second threshold value θ2 among the plurality of specific monitoring areas Bo. , It is reduced compared to before the high rise region BH is detected.

  Further, the air volume control unit detects the air volume of outdoor air supplied to a specific monitoring area (hereinafter referred to as a low rising area BL) other than the high rising area BH among the plurality of specific monitoring areas Bo. Increase compared to before being done.

  At this time, the wind direction adjusting unit 7 does not directly supply outdoor air to the air-conditioning target area (low rise area BL), but toward the air intake 6A of the indoor air conditioner 6 responsible for air-conditioning of the air-conditioning target area. Blow outdoor air. For this reason, most of the supplied outdoor air is supplied to the low ascending region BL via the indoor air conditioner 6.

  And when the area | region (henceforth high temperature area | region BHT) in which the temperature of air exceeded preset temperature among the cold air | gas channel | paths 3A generate | occur | produced, an indoor air conditioner control part makes refrigerating capacity to the indoor air conditioner 6. And the air cooled by the refrigerating capacity is supplied to the high temperature region BHT.

  As described above, when the temperature distribution in the cold air passage 3A is uniform, the control device 20 reduces the blowing of outdoor air to the high ascending region BH and blows outdoor air to the low ascending region BL. While increasing, the 2nd control mode which supplies the cold air produced | generated with the indoor air conditioner 6 to the high temperature area | region BHT is performed.

  Then, the air volume control unit according to the present embodiment operates the air direction guide plate 7A while keeping the rotation speed (air flow) of the blower 9 constant, so that the outdoor air to the high ascending region BH, the low ascending region BL, etc. Change and control the supply amount.

  Specifically, when the outside air supply amount to the low ascending region BL is increased, the air volume control unit operates the wind direction guide plate 7A so that the introduced outdoor air is guided to the low ascending region BL. For this reason, the supply amount of the outdoor air supplied to areas other than the low rise area BL decreases.

  When the outside air supply amount to the high ascending region BH is decreased, the air amount control unit operates the air direction guide plate 7A so that the introduced outdoor air is guided to a region other than the high ascending region BH. For this reason, the supply amount of the outdoor air supplied to areas other than the high ascending area BH increases.

2.3 Details of First Control Mode and Second Control Mode When the air conditioner is activated, a program for executing the control flow shown in FIG. 3 is read and executed by the CPU. The program is stored in advance in a nonvolatile storage unit such as a ROM.

  When this control flow is activated, it is determined whether or not the temperature distribution of the cold air passage 3A, which is the air conditioning target area, is uniform (S1). As described above, “uniform temperature distribution” refers to “when the temperature difference between different air-conditioning target areas is equal to or less than the temperature difference ΔT1”.

  If it is determined that the temperature distribution is uniform (S1: YES), the second control mode is executed. That is, it is determined whether or not the temperature increase rate (dT / dt) is within the first threshold θ1 in the cold air passage 3A, that is, whether or not the specific monitoring region Bo exists (S5).

  When it is determined that the temperature increase rate (dT / dt) is within the first threshold θ1, that is, the specific monitoring area Bo does not exist (S5: YES), the control device 20 changes the outdoor air blowing direction. The current state is maintained without controlling (S20).

  When it is determined that the temperature increase rate is greater than the first threshold θ1, that is, the specific monitoring area Bo exists (S5: NO), the temperature of the specific monitoring area Bo exceeds the upper limit temperature within a preset time. That is, it is determined whether or not there is a specific monitoring region (high rising region BH) having a temperature increase rate larger than the second threshold θ2 among the plurality of specific monitoring regions Bo (S10).

  When it is determined that the high ascending region BH does not exist (S10: NO), S20 is executed. When S20 is executed, S1 is executed again. When it is determined that the high ascending region BH exists (S10: YES), the control device 20 directs the outdoor air blowing direction to other than the high ascending region BH, that is, the low ascending region BL (S15), S30. Execute.

  When it is determined in S1 that the temperature distribution of the cold air passage 3A is not uniform (S1: NO), the first control mode is executed. That is, the control device 20 performs S30 after directing the blowing direction of the outdoor air to a region where the temperature is high (S25).

  In S30, it is determined whether or not the absolute value (| dT / dt |) of the temperature change rate of the cold air passage 3A that is the monitoring target region is within a preset value (S30). When it is determined that the absolute value (| dT / dt |) of the temperature change rate of the cool air passage 3A is within a preset value (S30: YES), S1 is executed again.

  If it is determined that the absolute value (| dT / dt |) of the temperature change rate of the cool air passage 3A is larger than a preset value (S30: NO), whether or not the temperature change rate is a positive value. That is, it is determined whether or not the area is the first specific monitoring area A1 (S35).

  When it is determined that the region is the first specific monitoring region A1 (S35: YES), the control device 20 directs the outdoor air blowing direction to the first specific monitoring region A1 (S45), and then S30. Execute.

  When it is determined that the area is not the first specific monitoring area A1, that is, the second specific monitoring area A2 (S35: NO), the control device 20 changes the blowing direction of the outdoor air to the second specific monitoring area A2. (S40 in this embodiment) (S40), S30 is executed.

3. Features of the Air Conditioner According to the Present Embodiment In the first control mode, since the outdoor air blowing direction is directed to the first specific monitoring area A1, the air volume of outdoor air supplied to the first specific monitoring area A1 is the first control mode. It increases compared to before the specific monitoring area A1 is detected (see FIGS. 2A and 2B).

  That is, in the present embodiment, when the temperature increase rate is large, the outdoor air supplied to the first specific monitoring region A1 having a large temperature increase rate increases, so as shown in FIGS. 4A and 4B, The temperature rise can be efficiently suppressed.

  2A and 4A show a case where the wind direction control in the first control mode is not performed. 2B and 4B show a case where the wind direction control is performed in the first control mode. Air conditioner-1 indicates the indoor air conditioner 6 on the left side in FIG. 2A, and air conditioner-2 indicates the indoor air conditioner 6 on the right side in FIG. 2A.

  “Thermo-on” means “the steam compressor type refrigerator is in operation”, and “Thermo-off” means “the steam compressor type refrigerator is stopped”. As can be seen from these figures, the temperature increase in the room, that is, the temperature increase of each ICT device 1 can be suppressed while suppressing the operation of the vapor compressor refrigerator.

  In the first control mode, since the outdoor air blowing direction is directed to a direction other than the second specific monitoring area A2, the second specific monitoring area A2 detects the air volume of the outdoor air supplied to the second specific monitoring area A2. Can be reduced compared to before.

  That is, in this embodiment, when the temperature decrease rate is large, the outdoor air supplied to the second specific monitoring region A2 having a large temperature decrease rate is reduced, so that the indoor temperature can be efficiently reduced. It can suppress (refer FIG. 5A and FIG. 5B).

  FIG. 5A shows a case where the wind direction control in the first control mode is not performed. FIG. 5B shows a case where the wind direction control is performed in the first control mode. As is clear from these figures, it is possible to efficiently suppress an excessive decrease in the indoor temperature.

  In the second control mode, when a plurality of specific monitoring areas Bo are generated, outdoor air is preferentially supplied to an area where the temperature is unlikely to rise early (low increase area). For this reason, the indoor air conditioner 6 preferentially blows “cold air cooled by the refrigerator” preferentially to an area (high rise area) where the temperature is likely to rise early (see FIGS. 6A and 6B). ).

  Therefore, the indoor air conditioner 6 blows “cold air cooled by the refrigerator” to the low rise region, that is, “cold air cooled by the refrigerator” is blown to all the specific monitoring regions. Can be suppressed. As a result, since it is possible to suppress an increase in the thermal load of the air conditioner, power consumption can be reduced (see FIGS. 7A and 7B).

  6A and 7A show a case where the wind direction control in the second control mode is not performed. 6B and 7B show a case where the wind direction control is performed in the second control mode. As is clear from these figures, it is possible to suppress an increase in the indoor temperature, that is, an increase in the temperature of each ICT device 1 while suppressing the operation of the vapor compressor refrigerator.

  The present embodiment is characterized in that the air volume is changed by operating the wind direction adjusting unit 7. Thereby, the power consumption of an air conditioner can be reduced compared with the case where ventilation volume is changed with an air blower.

  In the present embodiment, outdoor air is supplied to the air-conditioning target area via the indoor air conditioner 6. Therefore, compared with the case where outdoor air is supplied directly to the air-conditioning target area without passing through the indoor air conditioner 6, it is possible to suppress the occurrence of non-uniform temperature distribution in the air-conditioning target area.

  In addition, when adjusting a wind direction, as shown in FIG. 8, you may control each wind direction guide plate 7A independently, and may control a wind direction. According to such wind direction control, it becomes possible to control the air volume more precisely than when the plurality of wind direction guide plates 7A are all directed in the same direction.

(Second Embodiment)
As shown in FIG. 9, the wind direction adjusting unit 7 according to the present embodiment includes a wind direction guide plate 7 </ b> A capable of changing the elevation angle and the depression angle. And in this embodiment, it is set as the structure which can adjust the air volume of the outdoor air supplied to each of the several inlet 5A by controlling the action | operation of the wind direction adjustment part 7. FIG.

  That is, in the above-described embodiment, the wind direction adjusting unit 7 directs the wind direction to the first specific monitoring region A1 or the low ascending region BL. On the other hand, this embodiment supplies outdoor air toward the inlet 6A of the indoor air conditioner 6 responsible for air conditioning in the first specific monitoring area A1 or the low ascending area BL.

And the wind direction adjustment part 7 which concerns on this embodiment becomes a structure which can change an elevation angle and a depression angle, in order to supply outdoor air reliably to each inlet port 6A opened toward the upper side.
If the wind direction guide plate 7A has a configuration in which the elevation angle and depression angle cannot be changed and can be swung only in the left-right direction, the room responsible for air conditioning of the first specific monitoring area A1 or the low ascending area BL. It is difficult to supply outdoor air toward the air inlet 6A of the air conditioner 6.

  Thereby, in this embodiment, outdoor air is reliably supplied to an air-conditioning object area | region via the indoor air conditioner 6. FIG. Therefore, compared with the case where outdoor air is supplied directly to the air-conditioning target area without passing through the indoor air conditioner 6, it is possible to suppress the occurrence of non-uniform temperature distribution in the air-conditioning target area.

(Other embodiments)
Although the control device 20 according to the above-described embodiment can execute the first control mode and the second control mode, the present invention is not limited to this. For example, the first control mode and the second control mode At least one of the modes may be abolished.

  In the above-described embodiment, the air volume of the outdoor air supplied by swinging the wind direction guide plate 7A is controlled, but the present invention is not limited to this. For example, the outdoor air introduction unit 4 may be provided for each indoor air conditioner 6, and the air volume of the outdoor air to be supplied may be controlled by controlling the rotational speed of the blower 9 provided in the outdoor air introduction unit 4.

  Each of the room temperature sensors St1 to Stn according to the above-described embodiment uses a room temperature sensor provided in each intake port 6A. However, the present invention is not limited to this, and for example, a room temperature sensor is provided in each region. May be.

  The indoor air conditioner control unit, the temperature change monitoring unit, the air volume control unit, the outdoor unit control unit, and the like according to the above-described embodiment are configured by software, but the present invention is not limited to this, For example, it may be configured with dedicated hardware.

  In the above-mentioned embodiment, although it was an air conditioner provided with the refrigerator which cools the air which blows off indoors, such as a vapor compression refrigerator, this invention is not limited to this. That is, an air conditioner that cools the room with outside air without operating the refrigerator may be used.

  In the above-described embodiment, the second control mode is executed when the temperature distribution is uniform, and the first control mode is executed when the temperature distribution is non-uniform. However, the present invention is not limited to this. For example, the first control mode may be executed regardless of the state of the temperature distribution.

  Further, the present invention is not limited to the above-described embodiment as long as it matches the gist of the invention described in the claims.

DESCRIPTION OF SYMBOLS 1 ... ICT apparatus 3 ... Rack 3A ... Cold wind passage 3B ... Passage 4 ... Outside air introduction part 4A ... Communication port 4B ... Filter 5 ... Outside air adjustment part 5A ... Inlet 6 ... Indoor air conditioner 6A ... Inlet 7 ... Airflow direction adjustment part 7A ... Wind direction guide plate 7B ... Actuator 9 ... Blower 20 ... Control device 20A ... Sensor input unit 20B ... Sensor input unit

Claims (3)

Air conditioning for server room in which at least one device (hereinafter referred to as heat generating device) among information communication technology devices (hereinafter referred to as ICT devices) and power supply devices for supplying power to the ICT devices is installed. In the device
An indoor air conditioner that has an air inlet for sucking indoor air, cools the sucked air, and supplies the air to the room;
An air conditioner comprising: an air direction adjusting unit that is provided in an outdoor air introduction unit that introduces outdoor air and that blows outdoor air toward the intake port. A plurality of the indoor air conditioners are provided, and an air conditioning target area controlled by each indoor air conditioner is set,
The air conditioner according to claim 1, further comprising: an air volume control unit that adjusts an air volume supplied to each of the plurality of air inlets by controlling an operation of the air direction adjusting unit. The plurality of air inlets are open upward.
The air conditioner according to claim 2, wherein the wind direction adjusting unit includes a wind direction guide plate capable of changing an elevation angle and a depression angle.