JP2016120446A - Dampproofing room - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dampproofing room which can be operated by a backup power source over a long period.SOLUTION: A control panel 5 changes an action mode of a dampproofing room 1 depending upon whether a power supply source is a commercial power supply 6 or a battery 7 that is a backup power supply. If the power supply source is the commercial power supply 6, the dampproofing room is operated in a normal mode in which a heating and regenerating process that dries a desiccant 41 on heating and a dehumidifying process that dehumidifies a room interior 10 are executed. If the power supply source is the battery 7, the dampproofing room is operated in a temporary mode in which the dehumidifying process is executed but the heating and regenerating process is not executed. If the heating and regenerating process is executed in the normal mode upon switching of the power supply source from the commercial power supply 6 into the battery 7, the dehumidifying process is not immediately performed in the emergency mode, but a cooling process that discharges heat of the desiccant out of the room is executed, followed by the dehumidifying process.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a moisture proof storage for storing stored products that require high humidity management, such as precision equipment such as cameras and electronic parts, food, chemicals, etc., in particular, automatically dehumidifying the interior of the storage, The present invention relates to a moisture proof storage capable of storing stored items in a constant humidity state.

  Patent Document 1 discloses a moisture-proof cabinet that can reduce wasteful power consumption and stably maintain the internal environment. In this moisture barrier, the outside shutter of the dehumidifying unit is closed and the inside shutter is opened, and during the dehumidifying process for dehumidifying the inside of the warehouse, the timing of the next heating regeneration process has arrived due to the elapse of the heating regeneration cycle. However, if the internal humidity at that time is lower than the first threshold, it is determined that the desiccant is still maintaining the dehumidifying capacity, and the dehumidification process is continued without starting the heat regeneration process. . When the internal humidity becomes a second threshold value higher than the first threshold value, it is determined that the desiccant has lost its dehumidifying capacity, and the dehumidification process is finished. Then, the internal shutter is closed and the internal storage is closed. The outer shutter is opened, the heater is operated, and the heat regeneration process for heating and drying the desiccant is started. Thereby, unnecessary heat regeneration processing is omitted, and the frequency of the heat regeneration processing is prevented from increasing.

JP 2013-134034 A

  Moisture-proof cabinets that store high-humidity controlled storage products such as cameras, electronic parts and other precision equipment, food, chemicals, etc., are required to operate at all times to store stored products at a certain humidity. Is done. For this reason, if a backup power source such as a battery is prepared and the supply of commercial power is cut off due to a power failure, etc., the power source is automatically switched from the commercial power source to the backup power source, and the moisture barrier is continued. It is preferable to operate. However, the heat regeneration process consumes a lot of electric power because the heater is operated to heat and dry the desiccant. For this reason, if the heat regeneration process is performed while operating on the backup power supply, the power of the backup power supply will be used up in a short period of time, and the moisture barrier cannot be operated continuously until the commercial power supply is restored. There is sex. This point is not taken into consideration in the moisture barrier described in Patent Document 1.

  This invention is made | formed in view of the said situation, The objective is to provide the moisture-proof warehouse which can be operated with a backup power supply for a longer period of time.

  In order to solve the above problems, in the moisture-proof cabinet of the present invention, the power supply source is a commercial power source or a backup power source, and the operation mode is different. If the power supply source is a commercial power source, the desiccant is heated. If the power supply source is a backup power supply, the dehumidification process is performed, and the heat regeneration process is performed in a temporary mode in which the heat regeneration process is not performed. Here, when the power supply source is switched from the commercial power supply to the backup power supply and the heat regeneration process is performed in the normal mode, the dehumidifying process is not immediately performed in the temporary mode, and the heat of the desiccant is discharged outside the chamber. A cooling process may be performed, and then a dehumidifying process may be performed.

For example, the present invention is a moisture-proof storage for managing the humidity in the storage for storing stored goods,
A housing housed in the cabinet;
A desiccant housed in the housing;
A heater for heating the desiccant;
A shutter for selectively performing air circulation between the housing and the interior of the housing, and air circulation between the housing and the exterior;
The shutter causes the inside and outside of the housing to circulate air, operates the heater to heat the desiccant, and discharges moisture inside the housing to the outside of the warehouse to regenerate the desiccant. Control means for controlling the heat regeneration process to be performed, and controlling the execution of a dehumidification process in which air is circulated between the housing and the warehouse by the shutter, and the air in the warehouse is dehumidified by the desiccant;
Power supply switching means for switching the power supply source to either commercial power supply or backup power supply,
The control means includes
When the power source is switched to the commercial power source by the power source switching unit, the power source is operated in a normal mode in which the heating regeneration process and the dehumidifying process are performed. When the mode is switched to, the dehumidification process is performed, and the heating regeneration process is performed in a temporary mode.

  According to the present invention, when the commercial power supply is cut off due to a power failure or the like and the power supply source is switched to the backup power source, the dehumidification process is performed until the commercial power supply is restored, and the heat regeneration process that consumes much power Is not implemented. For this reason, it becomes possible to operate with a backup power source for a longer period of time.

FIG. 1 is a schematic configuration diagram of a moisture barrier 1 according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the dehumidifying unit 4 shown in FIG. FIG. 3 is a flowchart for explaining the operation of the moisture-proof chamber 1. FIG. 4 is a flowchart for explaining the low humidity control mode which is one of the normal modes. FIG. 5 is a flowchart for explaining the medium humidity control mode which is one of the normal modes. FIG. 6 is a flowchart for explaining the temporary mode. FIG. 7 is a diagram for explaining an example of the humidity control result of the moistureproof cabinet 1.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of a moisture barrier 1 according to the present embodiment.

  The moisture-proof storage 1 according to the present embodiment is a storage for storing stored products that require advanced humidity management, such as precision equipment such as cameras and electronic parts, food, chemicals, and the like. Automatically dehumidify and store the product at a constant humidity.

  As shown in the figure, the moisture-proof cabinet 1 includes a casing 15 and an operation panel 2 disposed on the front surface of the casing 15 of the moisture-proof cabinet 1 (the surface on the side where the door 11 for accessing the interior 10 is provided). And a humidity sensor 3, a dehumidifying unit 4, and a control panel 5 disposed in the interior 10.

  The operation panel 2 includes input devices such as buttons and keys for receiving various instructions and setting information from the operator, and a liquid crystal panel and LEDs for notifying the operator of various setting information, operation status, environment information, and the like. And a display device.

  The humidity sensor 3 detects the humidity of the interior 10 (referred to as the interior humidity) and outputs the detection result to the control panel 5.

  The dehumidifying unit 4 dehumidifies the interior 10 according to a control signal from the control panel 5.

  FIG. 2 is a schematic sectional view of the dehumidifying unit 4.

  As shown in the figure, the dehumidifying unit 4 is disposed so as to close the opening 13 formed in the back plate 12 of the housing 15, for example. In FIG. 2, the dehumidifying unit 4 is disposed in the interior 10 so as to close the opening 13 from the interior 10 side, but is disposed in the exterior 14 so as to close the opening 13 from the exterior 14 side. Also good. The dehumidifying unit 4 heats the desiccant (for example, zeolite, silica gel) 41 and the desiccant 41 in a quantity determined according to the space in the chamber 10 and the heat regenerating agent 41 so that the air in the chamber 10 can be sufficiently dehumidified. The heater 42 for carrying out, the fan 43, and the housing 40 which accommodates these 41-43 inside are provided.

  In the housing 40, internal air inlets 441 and 442 for taking in the air B 1 in the internal space 10 into the housing 40, and air in the housing 40, as internal storage air vents that connect the interior of the housing 40 and the internal space 10. In-house exhaust ports 443 and 444 for discharging B2 to the inside 10 are formed. In addition, as an outside ventilation port connecting the inside of the housing 40 and the outside 14, the outside intake ports 445 and 446 for taking in the air A1 outside the warehouse 14 into the housing 40 and the air A2 inside the housing 40 are stored. External exhaust ports 447 and 448 for discharging to the outside 14 are formed. The fan 43 is driven to forcibly circulate the air between the inside of the housing 40 and the inside 10 or the outside 14 through these vent holes 441 to 448.

  Further, the dehumidifying unit main body 4 includes a shutter 451 that exclusively opens and closes the internal intake port 441 and the external intake port 445, and a shutter 452 that exclusively opens and closes the internal exhaust port 443 and the external exhaust port 447. And further.

  The dehumidifying unit 4 is in a state in which the inside of the housing 40 is opened only to the interior 10 according to control of the control panel 5 described later (inside intake port 441: open, outside intake port 445: closed, inside exhaust port 443: Open, outside exhaust port 447: closed), the fan 43 is rotated as necessary. Thereby, after the humid air B1 in the interior 10 is taken into the housing 40 and dehumidified by the desiccant 41, it is discharged into the interior 10 as dry air B2, and the interior 10 is dehumidified. . Further, in the state where the inside of the housing 40 is opened only to the outside 14 (inside the intake port 441: closed, outside the intake port 445: open, inside the exhaust port 443: closed, outside the exhaust port 447: open), While the heater 42 is operated to heat the desiccant 41, the fan 43 is rotated as necessary. As a result, the air A1 outside the refrigerator 14 is taken into the housing 40 and is humidified by the desiccant 41 heated by the heater 42, and then is discharged to the exterior 14 as moist air A2, and the desiccant 41 is discharged. dry.

  Returning to FIG. 1, the description will be continued.

  The control panel 5 controls the dehumidifying unit 4 based on the internal humidity detected by the humidity sensor 3 in accordance with an instruction received from the operator via the operation panel 2 to bring the internal 10 into a desired humidity state. In addition, the control panel 5 changes the operation mode depending on whether the power supply source is the commercial power supply 6 or the battery 7 that is a backup power supply, and suppresses power consumption during operation with the battery 7.

  As illustrated, the control panel 5 includes a humidity sensor IF unit 51, an operation panel IF unit 52, a shutter drive unit 53, a fan drive unit 54, a heater drive unit 55, a power supply switching unit 56, and a main control. Part 50.

  The humidity sensor IF unit 51 is an interface for connecting to the humidity sensor 3.

  The operation panel IF unit 52 is an interface for connecting to the operation panel 2.

  The shutter drive unit 53 controls the operation of the shutters 451 and 452.

  The fan drive unit 54 controls the operation of the fan 43.

  The heater driving unit 55 controls the operation of the heater 42.

  The power source switching unit 56 switches the power supply source to either the commercial power source 6 or the battery 7 and supplies power to the units 50 to 55 of the control panel 5. Specifically, when power can be received from the commercial power source 6, the power source is switched to the commercial power source 6, power is supplied to each part of the moisture barrier 1, and power cannot be received from the commercial power source 6 due to a power failure or the like. In addition, the power supply source is switched to the battery 7 to supply power to each part of the moisture-proof chamber 1. Further, when the power supply switching unit 56 switches the power supply source, the power supply switching unit 56 notifies the main control unit 50 to that effect.

  The main control unit 50 detects the sensor value of the humidity sensor 3 input to the humidity sensor IF unit 51, the user operation information for the operation panel 2 input to the operation panel IF unit 52, and the power notified from the power supply switching unit 56. The shutter drive unit 53, the fan drive unit 54, and the heater drive unit 55 are controlled based on the supply source (commercial power supply 6 or battery 7) to keep the interior 10 in a desired humidity state.

  Next, the operation of the moisture barrier 1 will be described.

  FIG. 3 is a flowchart for explaining the operation of the moisture-proof chamber 1. This flow is started when the moisture-proof storage 1 is turned on.

  First, the main control unit 50 acquires information on the power supply source from the power switching unit 56 and determines the power supply source (S1). If the power supply source is the commercial power source 6 (“commercial power source” in S1), the operation mode of the moistureproof cabinet 1 is shifted to a normal mode described later (S2). Then, switching of the power supply source is monitored based on the notification from the power switching unit 56 (S3), and if the power supply source is switched due to a power failure of the commercial power supply 6 (YES in S3), S1 Return to.

  On the other hand, if the power supply source is the battery 7 in S1 (“battery” in S1), the operation mode of the moistureproof cabinet 1 is shifted to a temporary mode described later (S4). Then, the switching of the power supply source is monitored based on the notification from the power switching unit 56 (S5), and if the switching of the power supply source occurs due to recovery from a power failure of the commercial power supply 6 (YES in S5) ), Return to S1.

  Next, the normal mode (S2 in FIG. 2) will be described. In the present embodiment, the moisture-proof cabinet 1 has two modes, a low humidity control mode and a medium humidity control mode, as normal modes, and these modes are designated by the operator via the operation panel 2. Operate according to the specified mode.

  FIG. 4 is a flowchart for explaining the low humidity control mode which is one of the normal modes.

  The main control unit 50 performs the following heat regeneration process S20 so that the desiccant 41 exhibits its dehumidifying ability to the maximum (S201 to S204).

  That is, the main control unit 50 controls the shutter driving unit 53 to drive the shutter 451 so that the internal intake port 441 is closed and the external intake port 445 is opened, and the internal exhaust port 443 is closed. The shutter 452 is driven so that the outside exhaust port 447 is opened. Thus, the heater drive unit 55 is further controlled to operate the heater 42 in a state where the housing 40 of the dehumidifying unit 4 is cut off from the inside 10 and opened to the outside 14 (S201). Thereby, the desiccant 41 is heated and the moisture contained in the desiccant 41 evaporates. Then, by air circulation A1 and A2 between the housing 40 and the outside 14 (see FIG. 2), high-humidity air containing water vapor evaporated from the desiccant 41 is discharged from the housing 40 to the outside 14 and dried air. Is taken into the housing 40 from the outside 14. Thereby, drying of the desiccant 41 advances.

  Next, the main control unit 50 determines whether or not a predetermined heating time (for example, 25 to 30 minutes) has elapsed since the start of the heat regeneration process S20 (S202). If the predetermined heating time has elapsed (YES in S202), it is considered that the desiccant 41 has been dried to such an extent that the dehumidifying ability can be exhibited to the maximum, so the main control unit 50 controls the heater driving unit 55. The heater 42 is stopped (S203). Then, after a predetermined cooling time (for example, 8 to 10 minutes) elapses (S204), the desiccant 41 is cooled, and the heat regeneration process S20 is ended.

  If heating regeneration process S20 is complete | finished (it is YES at S204), the main control part 50 will implement the following dehumidification processes S21 (S211-S214).

  That is, the main control unit 50 controls the shutter driving unit 53 to drive the shutter 451 so that the internal intake port 441 is opened and the external intake port 445 is closed, and the internal exhaust port 443 is opened. Then, the shutter 452 is driven so that the outside exhaust port 447 is closed. Further, the fan driving unit 54 is controlled to operate the fan 43 (S211).

  As a result, forced air circulation B1 and B2 between the housing 40 and the interior 10 occurs (see FIG. 2). And after air is taken in into the housing 40 from the store | warehouse | chamber 10 and the moisture to contain is removed by the desiccant 41, it is discharged | emitted in the store | warehouse | chamber 10, and the air of the store | chamber interior 10 is dehumidified.

  Next, the main control unit 50 determines whether or not a predetermined heating regeneration period (for example, 6 hours) has elapsed since the start of the dehumidifying process S21 (S212). If the predetermined heating regeneration cycle has elapsed (YES in S212), the dehumidifying capacity of the desiccant 41 may be deteriorated, so the main control unit 50 passes the humidity sensor 3 via the humidity sensor IF unit 51. The internal humidity is acquired from the above, and it is determined whether or not the internal humidity is equal to or higher than a predetermined first threshold (S213). Here, the first threshold value is, for example, a value that is n (where n = 2 to 4)% RH lower than the target value of the humidity inside the cabinet received from the operator via the operation panel 2 (first threshold value = target value− n% RH, where the target value is -n% RH <0, the first threshold = 0% RH).

  When the internal humidity is equal to or higher than the first threshold (YES in S213), it is considered that the dehumidifying capacity of the desiccant 41 is greatly deteriorated and the internal 10 is not sufficiently dehumidified. Therefore, the main control unit 50 ends the dehumidification process S21 and returns to the heating regeneration process S20 (S201).

  On the other hand, if the internal humidity is less than the first threshold (NO in S213) even after the predetermined heating regeneration period has elapsed and the next heating regeneration processing timing has come, the dehumidifying capacity of the desiccant 41 has deteriorated. It is considered that the inside 10 is sufficiently dehumidified. Therefore, the main control unit 50 continues the dehumidification process S21 until the inside humidity detected by the humidity sensor 3 rises to a second threshold value that is higher than the first threshold value (S214). Here, the second threshold value is set to a value (second threshold value = target value + m% RH), for example, m (where m = 2 to 4)% RH higher than the target value of the internal humidity.

  When the internal humidity rises to the second threshold (YES in S214), it is considered that the desiccant 41 has lost its dehumidifying capacity and the internal chamber 10 cannot be sufficiently dehumidified, and thus the main control unit 50 Ends the dehumidification process S21 and returns to the heating regeneration process S20 (S201).

  FIG. 5 is a flowchart for explaining the medium humidity control mode which is one of the normal modes.

  The main control unit 50 performs the heat regeneration process so that the desiccant 41 exhibits its dehumidifying ability to the maximum (S22). This heat regeneration process S22 is the same as the heat regeneration process S20 (S201 to S204) shown in FIG. Thereafter, the main control unit 50 ends the heat regeneration process S22 and performs the following dehumidification process S23 (S231, S232).

  That is, the main control unit 50 controls the shutter driving unit 53 to drive the shutter 451 so that the internal intake port 441 is opened and the external intake port 445 is closed, and the internal exhaust port 443 is opened. Then, the shutter 452 is driven so that the outside exhaust port 447 is closed. Further, the fan driving unit 54 is controlled to operate the fan 43 (S231). Thereby, the interior 10 is dehumidified.

  Next, the main control unit 50 determines whether or not a predetermined heating regeneration period (for example, 6 hours) has elapsed since the start of the dehumidifying process S23 (S232). If the predetermined heating regeneration cycle has elapsed (YES in S232), the interior 10 may be excessively dehumidified, so the main control unit 50 ends the dehumidification process S23, and the interior 10 The following standby process S24 in which neither dehumidification nor heating regeneration of the desiccant 41 is performed is performed (S241, S242).

  That is, the main control unit 50 controls the fan drive unit 54 to stop the fan 43 and controls the shutter drive unit 53 so that the internal intake port 441 is closed and the external intake port 445 is opened. While driving the shutter 451, the shutter 452 is driven so that the internal exhaust port 443 is closed and the external exhaust port 447 is opened (S241). Thereby, the housing 40 of the dehumidifying unit 4 is shut off from the interior 10. The main controller 50 monitors the internal humidity detected by the humidity sensor 3, and the internal humidity is higher than the first threshold value and lower than the second threshold value (for example, the target value of the internal humidity value). It is determined whether or not (S242). If the internal humidity rises above the third threshold (YES in S242), it is considered that the internal 10 is not sufficiently dehumidified, so the main control unit 50 ends the standby process S24. On the other hand, if the internal humidity is less than the third threshold (NO in S242), the main control unit 50 continues the standby process S24 until the internal humidity rises above the third threshold, and then ends the standby process S24. To do.

  When the standby process S24 is completed, the main control unit 50 performs the following dehumidification process S25 (S251 to S253).

  That is, the main control unit 50 controls the shutter driving unit 53 to drive the shutter 451 so that the internal intake port 441 is opened and the external intake port 445 is closed, and the internal exhaust port 443 is opened. Then, the shutter 452 is driven so that the outside exhaust port 447 is closed. Further, the fan driving unit 54 is controlled to operate the fan 43 (S251). Thereby, the interior 10 is dehumidified. Further, the main control unit 50 acquires the internal humidity from the humidity sensor 3 via the humidity sensor IF unit 51, and determines whether or not the internal humidity is equal to or higher than the first threshold value (S252).

  When the internal humidity is less than the first threshold (NO in S252), it is considered that the internal 10 is excessively dehumidified. Therefore, the main control unit 50 ends the dehumidification process S25 and returns to the standby process S24 (S241). On the other hand, if the internal humidity is equal to or higher than the first threshold (YES in S252), the dehumidifying process S25 is just started if the dehumidifying process S25 is started within a predetermined time (for example, 1 hour) (NO in S253). It is considered that the dehumidification of the interior 10 is not sufficiently advanced. In such a case, the main control unit 50 returns to S252, and continues the dehumidification process S25 until the inside humidity becomes less than the first threshold or until a predetermined time has elapsed from the start of the dehumidification process S25. Moreover, when predetermined time passes after starting dehumidification process S25 (it is YES at S253), deterioration of the dehumidification capability of the desiccant 41 progresses and it is thought that the interior 10 is not fully dehumidified. Therefore, the main control unit 50 ends the dehumidification process S25 and returns to the heating regeneration process S22.

  FIG. 6 is a flowchart for explaining the temporary mode.

  The main control unit 50 analyzes the normal mode performed immediately before the power supply unit 400 switches the power supply source from the commercial power source 6 to the battery 7 (S400), and this normal mode is the low humidity control mode (see FIG. 4 (see “Low humidity control mode” in S400), the process proceeds to S410. If the medium humidity control mode (see FIG. 5) (“Medium humidity control mode” in S400), the process proceeds to S420.

  In S410, the main control unit 50 determines whether the power supply source 400 has switched the power supply source from the commercial power supply 6 to the battery 7 during the heat regeneration process in the low humidity control mode (S20 in FIG. 4). Judging. When the power supply source is switched from the commercial power source 6 to the battery 7 during the heat regeneration process in the low humidity control mode (YES in S410), the main control unit 50 is operating the heater 42 (YES in S411). Then, the heater drive unit 55 is controlled to stop the heater 42 (S412). Then, after a predetermined cooling time (for example, 8 to 10 minutes) elapses (S413), the desiccant 41 is cooled. Even when the heater 42 is not operating (NO in S411), there is a possibility that the desiccant 41 is not sufficiently cooled immediately after the heater 42 is stopped. Therefore, wait for a predetermined cooling time to elapse (S413), The desiccant 41 is cooled.

  Then, the main control unit 50 controls the shutter driving unit 53 to drive the shutter 451 so that the internal intake port 441 is opened and the external intake port 445 is closed, and the internal exhaust port 443 is opened. Then, the shutter 452 is driven so that the outside exhaust port 447 is closed. Further, the fan driving unit 54 is controlled to operate the fan 43 (S414). Thereby, a dehumidification process is started and the inside 10 is dehumidified.

  During the temporary mode, that is, until the power supply switching unit 400 switches the power supply source from the battery 7 to the commercial power source 6, the main control unit 50 performs the current state of the dehumidifying unit 4 (inside the intake port 441: open, The external intake port 445: closed, the internal exhaust port 443: open, the external exhaust port 447: closed, the fan 43: on) is maintained, and the dehumidification process is continued.

  On the other hand, in S410, when the power supply source is switched from the commercial power source 6 to the battery 7 during the process other than the heat regeneration process in the low humidity control mode, that is, the dehumidifying process (S21 in FIG. 4) (NO in S410). ), The dehumidifying unit 4 is in a state where the internal intake port 441 and the internal exhaust port 443 are open, the external intake port 445 and the external exhaust port 447 are closed, and the fan 43 is operating (S414). Thereby, the interior 10 is dehumidified. During the temporary mode, that is, until the power supply switching unit 400 switches the power supply source from the battery 7 to the commercial power source 6, the main control unit 50 performs the current state of the dehumidifying unit 4 (inside the intake port 441: open, The external intake port 445: closed, the internal exhaust port 443: open, the external exhaust port 447: closed, the fan 43: on) is maintained, and the dehumidification process is continued.

  In S420, the main control unit 50 has switched the power supply source from the commercial power supply 6 to the battery 7 by the power supply switching unit 400 during the heat regeneration process in the medium humidity control mode (S22 in FIG. 5). Judge whether or not. When the power supply source is switched from the commercial power source 6 to the battery 7 during the heat regeneration process in the medium humidity control mode (YES in S420), the main control unit 50 is operating the heater 42 (YES in S421). Then, the heater drive unit 55 is controlled to stop the heater 42 (S422). Then, after a predetermined cooling time (for example, 8 to 10 minutes) elapses (S423), the desiccant 41 is cooled. Even when the heater 42 is not operating (NO in S421), there is a possibility that the desiccant 41 is not sufficiently cooled immediately after the heater 42 is stopped. Therefore, wait for a predetermined cooling time to elapse (S423), The desiccant 41 is cooled.

  Then, the main control unit 50 controls the shutter driving unit 53 to drive the shutter 451 so that the internal intake port 441 is opened and the external intake port 445 is closed, and the internal exhaust port 443 is opened. Then, the shutter 452 is driven so that the outside exhaust port 447 is closed. Further, the fan driving unit 54 is controlled to operate the fan 43 (S424). Thereby, a dehumidification process is started and the inside 10 is dehumidified.

  Next, the main control unit 50 acquires the internal humidity from the humidity sensor 3 via the humidity sensor IF unit 51, and determines whether or not the internal humidity is equal to or higher than the first threshold (S425). . If the internal humidity is equal to or higher than the first threshold (YES in S425), the main controller 50 may determine whether the dehumidifying unit 4 is in the current state (internal) The intake port 441 is open, the external intake port 445 is closed, the internal exhaust port 443 is open, the external exhaust port 447 is closed, and the fan 43 is on. On the other hand, if the internal humidity is less than the first threshold (NO in S425), the internal controller 10 may be dehumidified too much, so the main control unit 50 controls the shutter drive unit 53 to store the internal humidity. The shutter 451 is driven so that the inner intake port 441 is closed and the external intake port 445 is opened, and the shutter 452 is driven so that the internal exhaust port 443 is closed and the external exhaust port 447 is opened. Further, the fan drive unit 54 is controlled to stop the fan 43 (S426). As a result, the dehumidifying process is completed and the standby process is started, and the housing 40 of the dehumidifying unit 4 is shut off from the interior 10.

  Then, the main control unit 50 monitors the internal humidity detected by the humidity sensor 3, and determines whether the internal humidity is equal to or higher than the above-described third threshold value (S427). When the internal humidity rises above the third threshold (YES in S427), there is a possibility that the internal 10 is not sufficiently dehumidified, so the main control unit 50 returns to S424 and starts the dehumidifying process. On the other hand, if the internal humidity is less than the third threshold (NO in S427), there is a possibility that the internal 10 is still excessively dehumidified, so the main controller 50 determines the current state of the dehumidifying unit 4 (internal The intake port 441 is closed, the external intake port 445 is open, the internal exhaust port 443 is closed, the external exhaust port 447 is open, and the fan 43 is off, and the standby process is continued.

  On the other hand, in S420, the power supply source is switched from the commercial power source 6 during the process other than the heat regeneration process in the medium humidity control mode, that is, the dehumidifying process (S23, S25 in FIG. 5) or the standby process (S24 in FIG. 5). When switched to the battery 7 (NO in S420), the main control unit 50 monitors the internal humidity detected by the humidity sensor 3, and determines whether the internal humidity is equal to or higher than the third threshold ( S428). If the internal humidity is equal to or higher than the third threshold (YES in S428), it is considered that the internal 10 is not sufficiently dehumidified, so the main control unit 50 proceeds to S424 and starts the dehumidifying process. On the other hand, if the internal humidity is less than the third threshold (NO in S428), it is considered that the internal 10 has been dehumidified too much, so the main control unit 50 proceeds to S426 and starts the waiting place process.

  The embodiment of the present invention has been described above.

  In the moisture proof chamber 1 according to the present embodiment, when the power supply source is switched from the commercial power source 6 to the battery 7 due to a power failure or the like, the operation mode of the moisture proof cabinet 1 is shifted from the normal mode to the temporary mode, and the commercial power source 7 Dehumidification processing (S414 and S424 in FIG. 6) or standby processing (S426 in FIG. 6) is performed until recovery, and heating regeneration processing that consumes much power is not performed. For this reason, it becomes possible to operate with the battery 7 for a longer period of time.

  Further, in the moisture-proof chamber 1 according to the present embodiment, the heat regeneration process (S20 in FIG. 4 or FIG. 5) is performed in the normal mode performed when the power supply source is switched from the commercial power supply 6 to the battery 7 due to a power failure or the like. In the temporary mode, the heater 42 is set to a predetermined state in a state where the internal intake port 441 and the internal exhaust port 443 are closed and the external intake port 445 and the external exhaust port 447 are open. The cooling time is stopped, the heat of the desiccant 41 is discharged to the outside of the cabinet 14 and the desiccant 41 is cooled, and then the dehumidifying process is performed. For this reason, it can prevent that the heat | fever and the water | moisture content of the desiccant 41 flow in into the store | warehouse | chamber 10, and it becomes possible to maintain the environment of the store | chamber 10 stably by this.

  Further, in the moisture-proof chamber 1 according to the present embodiment, in the low-humidity control mode of the normal mode, the execution timing of the next heating regeneration process S20 comes due to the elapse of the heating regeneration period during the dehumidification process S21. However, if the internal humidity is lower than the first threshold value, it is considered that the desiccant 41 still maintains the dehumidifying capacity, and thus the dehumidifying process S21 is continued without performing the heat regeneration process S20. When the internal humidity becomes the second threshold value higher than the first threshold value, it is considered that the desiccant 41 has lost the dehumidifying ability, so the dehumidifying process S21 is terminated and the heating regeneration process S20 is started. For this reason, it is possible to prevent unnecessary heating regeneration processing S20 from being performed at the stage where the desiccant 41 maintains the dehumidifying capacity, and to prevent the frequency of performing the heat regeneration processing S20 from increasing. Thereby, useless power consumption can be suppressed.

  Moreover, in the moisture-proof chamber 1 according to the present embodiment, in the middle humidity control mode, during the execution of the dehumidifying process S23, the execution timing of the next heating regeneration process S22 has arrived due to the elapse of the heating regeneration period. When the dehumidification process S25 is performed (continue) without performing the heat regeneration process S22, if the internal humidity is higher than the first threshold and lower than the third threshold, the internal 10 is excessively dehumidified. Therefore, the dehumidifying process S25 is interrupted and the standby process S22 is performed until the internal humidity becomes equal to or higher than the third threshold value. For this reason, since the operation of the fan 43 and the like is also stopped, wasteful power consumption can be further suppressed.

  FIG. 7 is a diagram for explaining an example of the humidity control result of the moistureproof cabinet 1.

  Here, the commercial power supply 6 is turned on for 20 hours after the start of operation to operate in the normal mode “low humidity control mode” (see FIG. 4), and the commercial power supply 6 is disconnected after the lapse of 20 hours. Shows the result when forcedly operating in the temporary mode (FIG. 6). In the figure, the left vertical axis, the right vertical axis, and the horizontal axis represent relative humidity (% RH), temperature (° C.), and elapsed time (hr), respectively. Reference numeral 80 denotes the temperature inside the cabinet 10, reference numeral 81 denotes the humidity inside the cabinet 10, and reference numeral 82 denotes the humidity outside the cabinet. When shifting from the normal mode “low humidity control mode” to the temporary mode, the dehumidification process (S414 in FIG. 6) in which only the fan 43 operates is performed, and the heat regeneration process is not performed. Thus, the consumption of the battery 7 can be suppressed. For this reason, as shown in the drawing, the interior 10 could be kept at a low humidity for a long period of time even after 20 hours from the normal mode to the temporary mode.

  In addition, this invention is not limited to said embodiment, Many deformation | transformation are possible within the range of the summary.

  For example, in the above embodiment, the fan 43 is operated only in the dehumidifying process, but the fan 43 may be operated in other processes. For example, by operating the fan 43 during the cooling process of the desiccant 41 (S204 in FIG. 3, S413, S423 in FIG. 6), the desiccant 41 can be cooled in a shorter time and more quickly. It becomes possible to shift to dehumidification processing.

  In the above embodiment, a battery is used as a backup power source, but the present invention is not limited to this. Other power sources such as a private generator may be used as a backup power source.

  Moreover, in said embodiment, although the case where one dehumidification unit 4 was arrange | positioned in the store | warehouse | chamber 10 was taken as an example and demonstrated, this invention is not limited to this. What is necessary is just to arrange | position the required number of dehumidification units 4 in the chamber 10 according to the size etc. of the chamber 10.

  In the above embodiment, the functional configuration of the control panel 5 shown in FIG. 1 may be realized by an integrated logic IC such as ASIC (Application Specific Integrated Circuit) or FPGA (Field Programmable Gate Array). Alternatively, it may be realized by software by a computer such as a DSP (Digital Signal Processor). Alternatively, in a general-purpose computer having an auxiliary storage device such as a CPU, a memory, and an HDD, the CPU may be realized by loading a predetermined program from the auxiliary storage device onto the memory and executing it.

  1: Moisture-proof warehouse, 2: Operation panel, 3: Humidity sensor, 4: Dehumidification unit, 5: Control panel, 6: Commercial power supply, 7: Battery, 10: Inside, 11: Door, 12: Back plate, 13: Opening, 14: Outside, 15: Housing, 40: Housing, 41: Desiccant, 42: Heater, 43: Fan, 50: Main control unit, 51: Humidity sensor IF unit, 52: Operation panel IF unit, 53: Shutter drive unit, 54: fan drive unit, 55: heater drive unit, 56: power supply switching unit, 441, 442: internal intake port, 443, 444: internal exhaust port, 445, 446: external intake port, 447 448: Exhaust port outside the chamber, 451, 452: Shutter

Claims (2)

It is a moisture-proof storage that manages the humidity in the storage for storing stored items,
A housing housed in the cabinet;
A desiccant housed in the housing;
A heater for heating the desiccant;
A shutter for selectively performing air circulation between the housing and the interior of the housing, and air circulation between the housing and the exterior;
The shutter causes the inside and outside of the housing to circulate air, operates the heater to heat the desiccant, and discharges moisture inside the housing to the outside of the warehouse to regenerate the desiccant. Control means for controlling the heat regeneration process to be performed, and controlling the execution of a dehumidification process in which air is circulated between the housing and the warehouse by the shutter, and the air in the warehouse is dehumidified by the desiccant;
Power supply switching means for switching the power supply source to either commercial power supply or backup power supply,
The control means includes
When the power source is switched to the commercial power source by the power source switching unit, the power source is operated in a normal mode in which the heating regeneration process and the dehumidifying process are performed. When it is switched to, the dehumidification cabinet is operated in a temporary mode in which the dehumidification process is performed and the heating regeneration process is not performed. The moisture barrier according to claim 1,
The control means includes
When the heating regeneration process is performed in the normal mode when the power supply source is switched from the commercial power source to the backup power source by the power source switching unit, the heater is stopped in the temporary mode, The moisture-proof storage, wherein the dehumidification is performed after the cooling process for discharging the heat of the desiccant to the outside of the storage.

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