JP2012234364A - Rack apparatus, rack system and housing structure - Google Patents

Abstract

A rack device capable of controlling the internal temperature of a housing is provided.
A rack apparatus 1 includes a housing 2 on which an electronic device 8 is mounted, and a normal door 4 having a mechanism that is attached to an end of the housing 2 on each opening 22 side so as to be freely opened and closed and locked by locking. And have. Further, the rack device 1 is formed on the surface portion of the normal door 4 facing the intake port 8A of the electronic device 8 and can be opened and closed at the end of the housing 2 on the side of the circulation port 23 through which outside air flows to the housing 2. Has an emergency door 5 attached to the. Furthermore, the rack device 1 has a control unit 17 that automatically opens the emergency door 5 while the normal door 4 is locked when the internal temperature of the housing 2 exceeds the set temperature.
[Selection] Figure 1

Description

  The present invention relates to a rack device, a rack system, and a housing structure.

  There is a technology equipped with an air conditioning function in a rack apparatus in which electronic equipment is mounted. The air conditioning function of the rack device can stabilize the operation of the mounted electronic device by stabilizing the internal temperature of the rack device. However, in the rack device, when the air conditioning function is stopped due to a power failure or the like, the internal temperature of the rack device rises and the limit temperature of the mounted electronic device may be exceeded. In this case, the electronic device mounted in the rack apparatus may be considered to have an unstable operation function due to exceeding the limit temperature.

  Therefore, there is a technology in which an uninterruptible power supply is mounted on a rack device in order to cope with such a situation. A rack device equipped with an uninterruptible power supply can stabilize the internal temperature by continuing the operation of the air-conditioning function by feeding the uninterruptible power supply even during a power failure. As a result, the operation of the mounted electronic device is stabilized because the temperature rise to the limit temperature is suppressed.

  However, mounting uninterruptible power supplies in all rack devices in this way leads to an increase in product cost. In addition, the rack apparatus equipped with the uninterruptible power supply loses power supply to the air-conditioning function when the power outage is prolonged, so that the internal temperature rises. Even if an uninterruptible power supply is installed, if the air conditioning function itself fails, the internal temperature rises.

  Therefore, in a rack apparatus equipped with an air conditioning function, it may be possible to manually open the rack apparatus door when the internal temperature rises due to a power failure or the like. In this case, since the outside of the rack device is taken into the interior when the door is opened, an increase in the internal temperature of the rack device can be suppressed.

Special table 2010-524074 gazette

  However, the manager is not always resident depending on the working hours such as nights and holidays. Moreover, in recent years, it is also required to secure security for the electronic equipment mounted on the rack device. Therefore, a situation where a third party other than the administrator opens the rack device door without permission should be avoided.

  In addition, in a data center in which rack devices on which electronic devices such as servers are mounted are arranged, the number of rack devices to be arranged becomes enormous. Therefore, an administrator spends a great deal of time opening the door for each rack device. Cost. Therefore, in the rack apparatus, there is a high possibility that the internal temperature of the housing cannot be controlled.

  An object of one aspect is to provide a rack device, a rack system, and a housing structure that can control the internal temperature of the housing.

  In one aspect, the disclosed device includes a housing in which an electronic device is mounted, and a mechanism that is attached to the housing and that faces the access surface when the electronic device is installed and operated, and is locked by locking. And having a first door. Furthermore, the disclosed apparatus is configured such that the second door for taking in outside air of the electronic device formed on the inner side surface portion of the first door, and the state inside the housing when the state inside the housing becomes a predetermined state. And a control unit that controls to open the second door in a state where the one door is locked.

  The internal temperature of the housing can be controlled.

FIG. 1 is a perspective view illustrating an example of a rack apparatus according to the present embodiment. FIG. 2 is a front view of a normal door and an emergency door on the front side. FIG. 3 is a plan view of a normal door and an emergency door on the front side. FIG. 4 is a side view of the normal door on the front side. FIG. 5 is a front view of the normal door and the emergency door on the back side. FIG. 6 is a block diagram showing the configuration of the control box of the rack apparatus. FIG. 7 is a perspective view of the rack device when the normal door is opened. FIG. 8 is a flowchart illustrating an example of the processing operation of the control unit related to the power failure release process. FIG. 9 is an explanatory diagram showing an example of an operation transition related to the emergency door opening. FIG. 10 is an explanatory diagram showing an example of airflow related to the emergency door opening. FIG. 11 is a flowchart illustrating an example of a processing operation of a control unit related to an air conditioning failure release process.

  Hereinafter, embodiments of a rack device, a rack system, and a housing structure disclosed in the present application will be described in detail based on the drawings. The disclosed technology is not limited by the present embodiment.

  FIG. 1 is a perspective view illustrating an example of a rack apparatus according to the present embodiment. A rack apparatus 1 shown in FIG. 1 includes a housing 2, an air conditioning unit 3, a normal door 4, an emergency door 5, a display lamp 6, a control box 7, and a thermostat 9. The housing 2 has a mounting portion 21, an opening portion 22, and a circulation port 23. The housing 2 is a sealed type. The mounting unit 21 is arranged in a plurality of stages inside the housing 2 and mounts the electronic device 8 such as a server for each stage. The outside air intake port 8 </ b> A of the electronic device 8 is provided, for example, in the front portion of the electronic device 8. The mounting unit 21 mounts each electronic device 8 so that the surface portion on the front side of the housing 2 and the intake port 8A of the electronic device 8 face each other.

  The opening 22 includes a front-side opening 22 </ b> A formed on the front-side surface of the housing 2 and a back-side opening (not shown) formed on the back-side surface of the housing 2. . The normal door 4 is attached to the end of the housing 2 on the opening 22 side so as to be freely opened and closed, and enables the electronic device 8 in the housing 2 to be taken out. Furthermore, the normal door 4 enables operation on the electronic device 8 in the housing 2.

  Further, the normal door 4 has a mechanism for locking the opening / closing operation by the lock of the manager. The normal door 4 includes a front-side normal door 4A attached to the end on the opening 22A side so as to be openable and closable, and a back-side normal door attached to the end on the back-side opening side. 4B (see FIG. 5).

  The distribution port 23 is formed on the inner side surface portion of the normal door 4 facing the intake port 8A of the electronic device 8 mounted inside the housing 2. The distribution port 23 has a front-side distribution port 23A formed in the surface portion of the normal door 4A and a back-side distribution port (not shown) formed in the surface portion of the normal door 4B. In addition, the opening area of the circulation port 23 is set to an area ratio that allows the predetermined strength of the normal door 4 to be maintained with respect to the normal door 4, for example, about 40% to 50% of the area of the normal door 4. Have.

  The emergency door 5 is attached to the end of the normal door 4 on the flow port 23 side so as to be openable and closable, and allows the outside air to flow from the flow port 23 to the inside of the housing 2. The emergency door 5 is attached to the front-side emergency door 5A that can be freely opened and closed at the end of the normal door 4A on the flow outlet 23A side, and to the end of the normal door 4B on the side of the flow outlet 23B. And an emergency door 5B on the back side. The distribution port 23 has a dimensional configuration in which the electronic device 8 mounted inside the housing 2 cannot be taken out even when only the emergency door 5A and the emergency door 5B are opened with the normal door 4 closed. ing. Furthermore, the size of the emergency door 5 is the size that covers all the mounted electronic devices 8 in the height direction so that the outside air is evenly sucked into the mounted electronic devices 8, and the width of the electronic device 8 in the width direction. Narrower size. In addition, although not shown, the emergency door 5 is for cooling by introducing outside air, and a large number of small openings through which only the outside air can pass for crime prevention (for example, a net or a lattice structure). You may comprise.

  The air conditioning unit 3 is disposed at the upper part of the main body of the housing 2, for example, allows cooling air to flow from the upper side to the lower side on the front side of the housing 2, and further passes the cooling air from the lower side to the upper side on the back side of the housing 2 And circulating the cooling air inside the housing 2 (see FIG. 10A), the internal temperature of the housing 2 can be stabilized. In addition, when circulating the cooling air by the air-conditioning part 3, the cooling air is a housing | casing by installing the shielding plate which suppresses passage of the cooling air to the back side in the opening part 22 in which the electronic device 8 is not mounted. 2 can be circulated in the main body without any deviation. Thereby, the electronic device 8 can cool each electronic device 8 by taking in the necessary cooling air from the intake port 8A and exhausting it to the back side. Further, the thermostat 9 is arranged in a passage in the upper part on the front side inside the housing 2 through which the cooling air of the air conditioning unit 3 passes. The thermostat 9 outputs a detection signal when the internal temperature of the housing 2, for example, the internal temperature in the passage exceeds a set temperature. The display lamp 6 is for reporting and outputting various information related to the rack device 1.

  2 is a front view of the normal door 4A and the emergency door 5A on the front side, FIG. 3 is a plan view of the normal door 4A and the emergency door 5A on the front side, and FIG. 4 is a side view of the normal door 4A on the front side. is there. The normal door 4 </ b> A on the front side shown in FIGS. 2 and 4 has a handle 41 and a lock mechanism 42. The handle 41 is normally used for opening / closing operation, locking operation, and unlocking operation of the door 4A. The lock mechanism 42 has upper and lower rod bars 42A that move in the vertical direction of the normal door 4A in conjunction with the operation of the handle 41. The locking mechanism 42 is interlocked with the locking operation of the handle 41 in the closed position where the door 4A is completely closed, so that the tip of the rod bar 42A interferes with the inner end of the housing 2 on the opening 22A side. Moving. As a result, the tip of the rod rod 42A interferes with the inner end of the housing 2, thereby locking the normal door 4A at the closed position of the normal door 4A. Further, the lock mechanism 42 locks the operation of the handle 41 itself by the manager's locking operation while the normal door 4A is locked in the closed position. As a result, the operation of the handle 41 itself is locked by the administrator's locking operation, so that the opening / closing operation of the normal door 4 is locked. Further, the administrator can release the lock of the operation of the handle 41 according to the unlocking operation of the handle 41.

  Further, the lock mechanism 42 returns to the original position so that the tip of the rod bar 42 </ b> A does not interfere with the inner end of the housing 2 in conjunction with the unlocking operation of the handle 41. As a result, the tip of the rod rod 42A does not interfere with the inner end of the housing 2, so that the normal door 4A can be opened. Then, as shown in FIG. 7, the administrator can open and close the electronic device 8 mounted inside the housing 2 by opening the normal door 4A.

  Further, a viewing window 51 made of a transparent acrylic material is provided on the surface portion of the emergency door 5A so that the state inside the housing 2 can be visually recognized. The emergency door 5A is attached to the end of the normal door 4A on the side of the distribution port 23A, for example, by two hinge mechanisms 52 so as to be opened and closed. The hinge mechanism 52 has a spring portion 52A that urges the emergency door 5A in the opening direction with a spring restoring force. Further, for example, when the emergency door 5A is about 12 kg, the spring portion 52A has an opening angle of about 2.5 seconds to about 5 seconds from 0 degree to 90 degrees as shown in FIG. It has a spring return force so that the emergency door 5A opens so that it can be reached. Further, the spring portion 52A has a spring return force so that the emergency door 5A can be opened so that the opening angle of the emergency door 5A exceeds 90 degrees and reaches about 180 degrees within a range of about 4 seconds to about 10 seconds. Have The opening time of the emergency door 5A up to 90 degrees or the opening time from 90 degrees to 180 degrees is set so as not to pose a danger to the person working in the vicinity of the rack apparatus 1 due to the sudden opening. It's time. Therefore, for the purpose of only the fundamental temperature control, it is only necessary to be able to open 90 degrees or more regardless of the set time.

  Further, a lock mechanism 53 that locks the opening / closing operation of the emergency door 5A at the closed position where the emergency door 5A is completely closed is provided on the back surface of the normal door 4A. The lock mechanism 53 includes an operation part 53A and a base part 53B. The base part 53B is attached to the upper part and the lower part of the back part of the emergency door 5A, respectively, and has lock holes 532 that fit into the lock pieces 531 of the operating part 53A. Furthermore, the operation part 53A is attached to the upper part and the lower part of the back part of the normal door 4A, respectively, and operates the lock piece 531 in the vertical direction of the normal door 4 according to the electromagnetic action caused by energization. The lock mechanism 53 locks the emergency door 5 in the closed position because the lock piece 531 is fitted in the lock hole 532 when there is no energization to the operating portion 53A, that is, when there is no electromagnetic action.

  On the other hand, the lock mechanism 53 pulls the lock piece 531 according to the electromagnetic action by energization to the operating portion 53A, so that the lock piece 531 is detached from the lock hole 532 and the emergency door 5A in the closed position is moved. unlock. As a result, the emergency door 5A is automatically opened by the spring return action of the spring portion 52A of the hinge mechanism 52 according to the unlocking.

  FIG. 5 is a front view of the normal door 4B and the emergency door 5B on the back side. The same components as those of the normal door 4A and the emergency door 5A in FIGS. 2 to 4 are denoted by the same reference numerals, and the description of the overlapping configuration and operation is omitted. Since the rear side emergency door 5B shown in FIG. 5 is not provided with the visual recognition window 51, its weight also increases. For example, the weight of the emergency door 5A is about 12 kg, while the weight of the emergency door 5B is about 14 kg. Further, the back side normal door 4B shown in FIG. 5 is heavier than the front side normal door 4A. For example, the weight of the normal door 4A is about 23 kg, whereas the weight of the normal door 4B is about 25 kg.

  Further, the spring portion 52A of the emergency door 5B has a different spring restoring force compared to the spring portion 52B of the emergency door 5A. For example, even when the emergency door 5B is about 15 kg, the spring portion 52A of the emergency door 5B can reach its opening angle from 0 degrees to about 90 degrees within a range of about 2.5 seconds to about 5 seconds. The emergency door 5B has a spring return force that opens. Further, the spring portion 52A of the emergency door 5B has a spring return that opens the emergency door 5B so that the opening angle of the emergency door 5B can reach about 180 degrees exceeding 90 degrees within a range of about 4 seconds to about 10 seconds. Have power.

  FIG. 6 is a block diagram showing the configuration of the control box 7 of the rack apparatus 1. The control box 7 shown in FIG. 6 includes an operation unit 11, an air conditioning control unit 12, a lock control unit 13, a power failure detection unit 14, an external notification unit 15, a memory 16, and a control unit 17. The operation unit 11 changes a set time and a set temperature to be described later according to a user operation. The user can set and change the setting time of the instantaneous power failure prevention timer, the setting temperature for detecting the abnormal temperature of the thermostat 9, the stable temperature of the air conditioning unit 3, and the like through the operation unit 11. The set temperature for detecting the abnormal temperature is set to 32 ° C., for example.

  The air conditioning control unit 12 controls the air conditioning unit 3 to adjust the internal temperature of the housing 2 to a stable temperature. The lock control unit 13 controls the lock mechanism 53 of the emergency door 5. The power failure detection unit 14 detects a power failure. The external notification unit 15 outputs various alarms such as power failure and air conditioning failure to an external device (not shown). The external notification unit 15 notifies and outputs an alarm to an external device and controls the display lamp 6 in response to the alarm. The memory 16 stores various information such as set time and set temperature. The control unit 17 controls the entire control box 7.

  When the power failure detection unit 14 detects a power failure, the control unit 17 starts an instantaneous power failure prevention timer. When the set time of the momentary power stop prevention timer has elapsed, the control unit 17 notifies the external device of a power failure occurrence alarm through the external notification unit 15. The control part 17 determines whether the detection signal of the thermostat 9 arrange | positioned in the housing | casing 2 was detected after the power failure detection. The thermostat 9 notifies the control unit 17 of a detection signal when the internal temperature of the housing 2 exceeds the set temperature.

  When the detection signal of the thermostat 9 is detected, the control unit 17 notifies the external device of an alarm of temperature abnormality inside the housing 2 through the external notification unit 15. Further, when detecting the detection signal of the thermostat 9, the control unit 17 instructs the lock control unit 13 to unlock the emergency door 5. The lock control unit 13 energizes the operation unit 53A of the lock mechanism 53 in response to an unlock instruction. Then, the operating portion 53A pulls in the lock piece 531 according to the electromagnetic action caused by energization, and the lock piece 531 is released from the lock hole 532 to unlock the emergency door 5 in the closed position. As a result, the emergency door 5 is automatically opened by the spring return action of the spring portion 52A of the hinge mechanism 52 according to the unlocking.

  Further, when the control unit 17 detects a failure of the air conditioning unit 3 through the air conditioning control unit 12, the control unit 17 outputs an alarm of air conditioning failure to an external device through the external notification unit 15. The control part 17 determines whether the detection signal of the thermostat 9 was detected after detecting the failure of the air-conditioning part 3. FIG.

  Next, the operation of the rack apparatus 1 of the present embodiment will be described. FIG. 7 is a perspective view of the rack device 1 when the normal door is opened. The administrator unlocks the handle 41 itself according to the unlocking operation, and operates the unlocking of the normal door 4 using the handle 41. The locking mechanism 42 unlocks the door 4 at the closed position of the normal door 4 and opens it because the tips of the upper and lower rod bars 42A do not interfere with the inner end of the housing 2 in conjunction with the unlocking operation of the handle 41. Operation becomes possible. As a result, the administrator can open the normal door 4, that is, the normal door 4A on the front side or the normal door 4B on the back side, as shown in FIG. Then, when the normal door 4 </ b> A or the normal door 4 </ b> B is opened, the administrator can put the electronic device 8 in and out of the housing 2.

  FIG. 8 is a flowchart illustrating an example of the processing operation of the control unit 17 related to the power failure release processing. FIG. 9 is an explanatory diagram showing an example of an operation transition related to the emergency door opening. The power failure opening process shown in FIG. 8 is a process of automatically opening the emergency door 5 when an abnormality in the internal temperature of the housing 2 is detected during a power failure. The control unit 17 shown in FIG. 8 determines whether or not a power failure is detected through the power failure detection unit 14 in the closed position where the normal door 4 and the emergency door 5 are completely closed as shown in FIG. Step S11). When the power failure is detected (Yes at Step S11), the control unit 17 uses a power failure battery (not shown) and starts an instantaneous power failure prevention timer (Step S12). When the set time of the momentary power stop prevention timer has elapsed, the control unit 17 notifies the external device of a power failure occurrence alarm through the external notification unit 15 (step S13). As a result, the administrator of the external device can recognize the occurrence of a power failure according to the alarm.

  The control unit 17 determines whether or not a detection signal indicating that the internal temperature of the housing 2 has exceeded the set temperature is detected from the thermostat 9 (step S14). When the control unit 17 detects a detection signal from the thermostat 9 (Yes at Step S14), the control unit 17 determines that the internal temperature of the housing 2 is abnormal. And the control part 17 alert | reports and outputs the alarm of temperature abnormality generation to the external apparatus through the external alerting | reporting part 15 using the battery for power failure (step S15). As a result, the administrator of the external device can recognize the occurrence of the temperature abnormality inside the housing 2 according to the alarm.

  Further, the control unit 17 instructs the lock control unit 13 to unlock the emergency door 5 (step S16), and ends the processing operation shown in FIG. That is, the lock control unit 13 energizes the operation unit 53A of the lock mechanism 53 in accordance with the lock release instruction using the power failure battery. The operating portion 53A pulls in the lock piece 531 according to the electromagnetic action caused by energization, and the lock piece 531 is released from the lock hole 532 to unlock the emergency door 5 in the closed position. As a result, the emergency door 5, that is, the emergency door 5 </ b> A on the front side and the emergency door 5 </ b> B on the rear side are automatically opened by the spring return action of the spring portion 52 </ b> A of the hinge mechanism 52 according to the unlocking while the normal door 4 is locked. Is done.

  At this time, the spring portion 52A of the hinge mechanism 52 has an spring return action, so that the opening angle is 0 to 90 degrees as shown in FIG. Open the door 5. Further, the spring portion 52A opens the emergency door 5 within a range of about 4 seconds to about 10 seconds, with an opening angle exceeding 90 degrees to about 180 degrees as shown in FIG. To do. As a result, the emergency door 5, that is, the emergency door 5 </ b> A on the front side and the emergency door 5 </ b> B on the back side can realize safe and smooth automatic opening.

  Further, the power source for energizing the operating portion 53A of the lock mechanism 53 in response to the unlocking instruction can be provided separately from the power failure battery. In this case, the above-described operation by the battery for power failure and the unlock control of the emergency door 5 by the thermostat 9 are not linked (detected with a delay from the power failure control due to a gradual rise in temperature in the housing 2). However, even when functioning separately, both functions can be controlled by separate power sources, so that the temperature management of the electronic device 8 can be performed more reliably.

  FIG. 10 is an explanatory diagram showing an example of airflow related to the emergency door opening. The rack apparatus 1 shown in FIG. 10 can circulate outside air into the housing 2 through the front-side circulation port 23A and the rear-side circulation port 23B by opening the emergency door 5A and the emergency door 5B 180 degrees. As a result, the rack apparatus 1 cannot use the air conditioning unit 3 due to a power failure, and even when the internal temperature of the housing 2 becomes abnormal, as shown in FIG. By taking in (thick arrow), an increase in internal temperature can be suppressed.

  FIG. 11 is a flowchart showing an example of the processing operation of the control unit 17 related to the air conditioning failure release process. The air conditioning failure opening process shown in FIG. 11 is a process of automatically opening the emergency door 5 when an abnormality in the internal temperature of the housing 2 is detected when the air conditioning unit 3 fails. The control unit 17 shown in FIG. 11 determines whether or not a failure of the air conditioning unit 3 is detected through the air conditioning control unit 12 in the closed position where the normal door 4 and the emergency door 5 shown in FIG. 9A are completely closed. (Step S21). When the control unit 17 detects a failure of the air conditioning unit 3 (Yes at Step S21), the control unit 17 notifies the external device of an alarm indicating the occurrence of the failure of the air conditioning unit 3 through the external notification unit 15 (Step S22). As a result, the administrator of the external device can recognize the occurrence of the failure of the air conditioning unit 3 according to the alarm. Moreover, the control part 17 lights the display lamp 6 from blue to red, when the failure of the air conditioning part 3 is detected.

  Further, the control unit 17 determines whether or not a detection signal indicating that the internal temperature of the housing 2 has exceeded the set temperature is detected from the thermostat 9 (step S23). When the control unit 17 detects a detection signal from the thermostat 9 (Yes at Step S23), the control unit 17 determines that the internal temperature of the housing 2 is abnormal, and notifies the external device of the occurrence of the temperature abnormality through the external notification unit 15. A notification is output (step S24). As a result, the administrator of the external device can recognize the occurrence of the temperature abnormality inside the housing 2 according to the alarm.

  Furthermore, the control unit 17 instructs the lock control unit 13 to unlock the emergency door 5 (step S25), and ends the processing operation shown in FIG. That is, the lock control unit 13 energizes the operation unit 53A of the lock mechanism 53 in response to the lock release instruction. The operating portion 53A pulls in the lock piece 531 according to the electromagnetic action by energization, and the lock piece 531 is released from the lock hole 532 to release the lock at the closed position of the emergency door 5. As a result, the emergency door 5, that is, the emergency door 5 </ b> A on the front side and the emergency door 5 </ b> B on the rear side are automatically opened by the spring return action of the spring portion 52 </ b> A of the hinge mechanism 52 according to the unlocking while the normal door 4 is locked. Is done.

  Therefore, even when the internal temperature of the housing 2 becomes abnormal due to a failure of the air conditioning unit 3, the rack device 1 draws outside air (thick arrows) from the front-side circulation port 23A as shown in FIG. By taking in, an increase in internal temperature can be suppressed.

  In the embodiment, for example, even when the internal temperature of the housing 2 exceeds the set temperature due to a power failure or an air conditioning failure, the emergency door 5 (5A, 5B) is automatically opened while the normal door 4 is locked, The internal temperature of the housing 2 can be controlled by taking outside air into the circulation port 23 by opening the door 5 (5A, 5B). As a result, the rack apparatus 1 can continue the stable operation of the electronic device 8 mounted therein even during a power failure or air conditioning failure.

  Moreover, in the above embodiment, since the emergency door 5 is automatically opened while the door 4 is normally locked, the electronic device 8 mounted inside the housing 2 cannot be taken out. The internal temperature of the housing 2 can be controlled.

  Further, in the above embodiment, the locking mechanism 53 opens and closes the emergency door 5 in the closed position of the emergency door 5 while constantly biasing the emergency door 5 in the opening direction by the spring restoring force of the spring portion 52A of the hinge mechanism 52. Locked. In the above embodiment, when the internal temperature of the housing 2 exceeds the set temperature, the lock is released by the electromagnetic action of the operating part 53A of the lock mechanism 53, and the emergency door 5 is automatically restored by the spring return action of the spring part 52A. Opened. As a result, the emergency door 5 can be easily opened simply by releasing the lock at the closed position of the emergency door 5.

  In the above embodiment, the spring door 52A of the hinge mechanism 52 of the emergency door 5 has a spring return action so that the opening angle of the emergency door 5 is in the range of about 2.5 seconds to about 5 seconds from 0 degrees to 90 degrees. The emergency door 5 opens to reach. Furthermore, the emergency door 5 is opened by the spring return action so that the opening angle exceeds 90 degrees and reaches about 180 degrees within a range of about 4 seconds to about 10 seconds. As a result, the emergency door 5 can realize safe and smooth automatic opening.

  In the above-described embodiment, the thermostat 9 is disposed inside the housing 2, and the control unit 17 determines whether or not the set temperature of the internal temperature has been exceeded based on whether or not the detection signal of the thermostat 9 is detected. However, the control unit 17 arranges a temperature sensor inside the housing 2, measures the internal temperature of the housing 2 through the temperature sensor, and determines whether or not the measured internal temperature exceeds the set temperature. good.

  In addition, after the emergency temperature of the emergency door 5 is automatically opened when the internal temperature of the housing 2 exceeds 32 ° C., the control unit 17 holds the lock piece 531 until the internal temperature of the housing 2 becomes, for example, 30.5 ° C. or less. The lock mechanism 53 may be controlled so that the emergency door 5 cannot be locked in the closed position while being retracted.

  Moreover, in the said Example, although the emergency door 5A and the emergency door 5B were two pieces, it is not limited to these, When facing 8 A of intake ports of the electronic device 8 mounted in the housing | casing 2 May provide one or three or more emergency doors 5.

  Further, in this embodiment, the lock mechanism 42 of the normal door 4 and the lock mechanism 53 of the emergency door 5 are illustrated. However, the present invention is not limited to these lock mechanisms, and the normal door 4 remains locked while the case 2 is locked. Any configuration that can automatically open the emergency door 5 when the internal temperature exceeds the set temperature may be used.

  In the above embodiment, the emergency door 5A and the emergency door 5B are automatically opened. However, the emergency door 5A and the emergency door 5B may be automatically opened at the same time or after a time difference.

  In the above embodiment, the spring return action of the spring portion 52A of the hinge mechanism 52 is used to automatically open the emergency door 5, but an elastic return force other than the spring may be used. Furthermore, in the said Example, you may make it open the emergency door 5 automatically by electric power feeding of an uninterruptible power supply.

  Moreover, in the said Example, although the base part 53B was attached to the back surface of the emergency door 5 as the locking mechanism 53 of the emergency door 5, and the action part 53A was attached to the back surface of the normal door 4, the action part 53A, The base portion 53 </ b> B may be attached to the back surface of the door 4.

  Moreover, in the said Example, although the setting temperature of the thermostat 9 was changed using the operation part 11, you may make it adjust a setting temperature using the temperature adjustment knob not shown of the thermostat 9. FIG. .

  In the above embodiment, the emergency door 5 is automatically opened when the internal temperature of the housing 2 exceeds the set temperature due to a power failure or an air conditioning failure. Even when the internal temperature 2 exceeds the set temperature, the emergency door 5 may be automatically opened.

  In addition, each component of each part illustrated does not necessarily need to be physically configured as illustrated. In other words, the specific form of distribution / integration of each part is not limited to the one shown in the figure, and all or a part thereof may be functionally or physically distributed / integrated in arbitrary units according to various loads and usage conditions. Can be configured.

  Furthermore, various processing functions performed in each device are performed on a CPU (Central Processing Unit) (or a microcomputer such as an MPU (Micro Processing Unit), MCU (Micro Controller Unit), etc.) in whole or in part. You may make it perform. Various processing functions may be executed entirely or arbitrarily on a program that is analyzed and executed by a CPU (or a microcomputer such as an MPU or MCU) or hardware based on wired logic. Needless to say.

DESCRIPTION OF SYMBOLS 1 Rack apparatus 2 Case 4,4A, 4B Normal door 5,5A, 5B Emergency door 8 Electronic device 8A Intake port 17 Control part 52 Hinge mechanism 52A Spring part 53 Lock mechanism 53A Actuation part 53B Base part

Claims (7)

A housing in which electronic devices are mounted;
A first door having a mechanism that is attached to a surface facing an access surface when performing installation and operation of the electronic device in the housing and has a mechanism that is locked by locking;
A second door for taking in the outside air of the electronic device, formed on the inner surface of the first door;
And a control unit that controls to open the second door in a state where the first door is locked when the inside of the housing becomes a predetermined state. .   The second door is formed to have a size that covers all the electronic devices mounted in the height direction with respect to the electronic devices mounted on the housing, and is narrower than the width of the electronic device in the width direction. The rack apparatus according to claim 1, wherein:   The rack device according to claim 1 or 2, further comprising a third door having the same shape as the second door on a surface in an exhaust direction of the electronic device. A spring portion that constantly urges the second door in the opening direction by a spring return force;
A locking portion that locks the opening and closing operation of the second door at the closed position of the second door;
The controller is
The said 2nd door is open | released by the spring return force of the said spring part according to the unlocking | release of the said lock part when predetermined conditions are satisfy | filled. The rack apparatus as described in. The spring portion is
The second door is opened so that the opening angle of the second door reaches from 0 to 90 degrees within a range of 2.5 to 5 seconds, and the opening angle of the second door is 90 degrees. The rack apparatus according to claim 4, wherein the rack apparatus has an elastic return force that opens the second door so that the second door reaches 180 degrees within a range of 4 to 10 seconds. A rack system having a casing in which an electronic device is mounted, a first door having a mechanism that is attached to a predetermined surface of the casing and locked by locking, and an air conditioning unit that adjusts the internal temperature of the casing. And
A second door attached to a surface of the housing facing the outside air intake port of the electronic device;
A spring portion that constantly urges the second door in the opening direction by a spring return force;
A lock portion that locks the opening and closing operation of the second door at the closed position of the second door;
And a control unit that, when the internal temperature exceeds a predetermined temperature, opens the second door by a spring return force of the spring part in response to unlocking of the lock part. . A housing in which the device is mounted;
A first door attached to a predetermined surface of the housing and having a mechanism for locking by locking;
A second door for taking in outside air of the device, formed on the inner side surface of the first door;
The housing structure characterized in that the second door can be opened in a state where the first door is locked when a state inside the sealed housing becomes a predetermined state.

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