JP5049599B2 - Room pressure control method and apparatus - Google Patents

Description

  The present invention relates to a room pressure control method and apparatus, and more particularly to a room pressure control method and apparatus for controlling the atmospheric pressure of at least two chambers communicating with each other through an opening opened and closed by a door to a predetermined atmospheric pressure.

  The internal pressure (room pressure) of the internal chamber in semiconductor manufacturing or research building, pharmaceutical manufacturing or research building, food processing or research building, etc. is higher than the external pressure for the purpose of preventing the entry of dust and bacteria from the outside. For the purpose of preventing leakage of bacteria and the like to the outside, the atmospheric pressure is set lower than the outside, and the rooms communicating with each other through the opening opened and closed by the door are also set to different atmospheric pressures. The chamber pressure (target chamber pressure) set for such a purpose is managed by the chamber pressure control device. In the prior art, the chamber pressure control for adjusting the chamber pressure of each chamber to the set target chamber pressure is generally set to the chamber pressure of the chamber (target chamber) in which the chamber pressure varies. In order to reduce the difference from the target chamber pressure, for example, the air supply amount to the target chamber or the exhaust amount from the target chamber is changed via a damper device.

  However, if the door connecting the target room and the adjacent room or corridor that has an air pressure different from the target room pressure of the target room is opened, if the conventional room pressure control is performed, the damper device The target chamber pressure is changed to the maximum or minimum adjustment position that can be adjusted so that the atmospheric pressure becomes the target chamber pressure, and the chamber pressure of the target chamber does not become the target chamber pressure. Wake up.

  Furthermore, even if the door is closed and the chamber pressure in the target chamber can be adjusted to the target chamber pressure by the chamber pressure control, control is performed from a state in which the balance of the air amount in the target chamber remains significantly disturbed. In addition, since the control is performed from a state in which the initial value of the control is significantly deviated from the target position, a large disturbance of the chamber pressure or hunting occurs immediately after the door is closed. In order to solve such a problem, the room pressure control device disclosed in Patent Document 1 includes a sensor that detects the opening and closing of the door, detects the opening and closing of the door with this sensor, and outputs an opening signal and a closing signal, Based on these signals, the damper opening degree of the damper device, which is the air volume adjusting means, is to be controlled.

That is, in the room pressure control device of Patent Document 1, the damper is fixed at the opening degree just before the door is opened based on the open signal supplied from the sensor when the door is opened. After that, when the door is closed, based on the closing signal supplied from the sensor, the damper that was fixed at the opening just before the door is opened is moved again from that state to follow the fluctuation of the atmospheric pressure in the room. The room pressure is controlled to the set pressure.
Japanese Patent No. 1842965

  In general, it is very important to maintain a certain environment for the target room for performing such room pressure control. Therefore, even if the room pressure control is performed, the opening door that connects the two rooms is opened. As a result, it may be impossible to temporarily maintain each chamber at the target chamber pressure. Even in such a case, it is necessary to prevent at least one of the two chambers having different environments from being mixed with the air in the other chambers. However, in the room pressure control device of the invention disclosed in Patent Document 1, Although the damper control is performed following the change in the chamber pressure immediately after the closure of the chamber, there is a problem in that the mixing with the air in the other chamber is incomplete.

  An object of the present invention is to maintain different indoor air pressures in at least two chambers that communicate with each other through an opening that is opened and closed by a door at a target chamber pressure, and the door of the opening that communicates these chambers from an open state to a closed state When it becomes, the movement range of the damper device is reduced to quickly return each room to the target room pressure, and at least one of the two rooms having different environments when the door of the opening is open is another room. Provided is a room pressure control method and apparatus for preventing room air mixing and ensuring cleanliness of the room.

The room pressure control method of the present invention is configured as follows in order to solve the technical problems described above. In other words, the first invention according to the chamber pressure control method provides at least one of an air supply device and an exhaust device including an air supply pipe and an exhaust pipe connected to each of at least two chambers that communicate with each other through an opening opened and closed by a door. on the other hand with a modifiable damper device passing air volume which is attached to a said chamber pressure control method to adjust the damper opening degree of the damper device to keep the different target chamber pressure was preset pressure in each chamber, The feature is that, when the door is closed, a first chamber pressure control that feedback-controls each damper opening to maintain the atmospheric pressure in each chamber at the preset target chamber pressure; When the door is opened or opened, a second chamber pressure control for controlling the damper opening of each damper device with respect to each chamber with a content different from the first chamber pressure control; and When it is closed between stomach condition, wherein and a that the damper opening back to the control the first chamber pressure of each damper device, the second chamber control the pressure, the opening degree from the opening operation of the door in a predetermined Until the damper opening of the damper device is set to a constant air volume value opening substantially intermediate between the maximum damper opening position and the minimum damper opening position in the slight fluctuation of the damper opening during the first chamber pressure control. It is changed, while the door exceeds the opening degree of the predetermined damper opening degree of the damper device is to be changed to the Teikazeryouchi predetermined increase and decrease the opening degree than the opening degree.

The room pressure control method according to the first invention comprises the above-described essential components. As one embodiment of the first invention, in the room pressure control method, the door is closed from the predetermined opening degree. The second chamber pressure control is executed until the door is closed from the predetermined opening degree, and the damper opening degree of the damper device is the first chamber until the door is closed from the predetermined opening degree. The air flow is changed to a constant air flow value opening that is substantially intermediate between the maximum damper opening position and the minimum damper opening position in the slight fluctuation of the damper opening during the pressure control .
As another embodiment of the room pressure control method according to the first invention, the change to the constant air volume value opening degree in the second chamber pressure control is to open the door and open to the predetermined opening degree. The second chamber pressure control is executed by a first detection signal supplied when detected, or a first detection signal supplied when opening until the door is closed from the predetermined opening degree is detected. The change to the damper opening degree, which is increased or decreased by a predetermined amount from the constant air volume value opening degree, is executed by the second detection signal supplied when the movement of the door exceeding the predetermined opening degree is detected.

According to a second aspect of the present invention, there is provided at least one of an air supply apparatus and an exhaust apparatus including an air supply pipe and an exhaust pipe connected to each of at least two chambers communicating with each other through an opening opened and closed by a door. It is a chamber pressure control method comprising a damper device that can change the amount of passing air attached to one side, adjusting the damper opening of the damper device to maintain the air pressure in each room at a different target chamber pressure set in advance, The feature is that, when the door is closed, a first chamber pressure control that feedback-controls each damper opening to maintain the atmospheric pressure in each chamber at the preset target chamber pressure; A second chamber pressure control for controlling the damper opening of each damper device with a content different from the first chamber pressure control when the door is opened or opened; and a state in which the door is opened. Closed The damper opening of each damper device is returned to the first chamber pressure control, and in the second chamber pressure control, from the opening operation of the door to a predetermined opening degree, The damper opening of the damper device is changed to a constant air flow amount opening that is substantially intermediate between the maximum damper opening position and the minimum damper opening position in the slight fluctuation of the damper opening during the first chamber pressure control, While the opening degree of the damper device exceeds the predetermined opening degree, the damper opening degree of the damper device causes the chamber pressure of each chamber to reach the target chamber pressure within the range of the adjustment range set in advance from the constant air volume value opening degree. The feedback control is performed so as to approach.

The room pressure control method of the second invention comprises the above-described essential components. As one embodiment according to the second invention, in the room pressure control method, the door is closed from the predetermined opening degree. The second chamber pressure control is executed until the door is closed from the predetermined opening degree until the door opening degree of the damper device is the first chamber pressure control. It is changed to a constant air flow value opening degree that is substantially intermediate between the maximum damper opening position and the minimum damper opening position in the slight fluctuation of the damper opening degree during the chamber pressure control.
As another embodiment of the room pressure control method according to the second aspect of the present invention, the change to the constant air volume value opening degree in the second chamber pressure control is to open the door and open to the predetermined opening degree. The second chamber pressure control is executed by a first detection signal supplied when detected, or a first detection signal supplied when opening until the door is closed from the predetermined opening degree is detected. Feedback control within a range of adjustment range set in advance from the constant air volume value opening degree so that the chamber pressure of each of the chambers approaches the target chamber pressure, the movement of the door exceeding the predetermined opening degree It is executed by the second detection signal supplied when it is detected.
As another embodiment of the first and second aspects of the invention, in the chamber pressure control method, a maximum damper opening position and a minimum damper opening position in a slight fluctuation of the damper opening during the first chamber pressure control, Is stored in the damper device while being updated.

As another embodiment of the first and second inventions, the first chamber pressure control and the second chamber pressure control are stored in a storage device of a damper controller provided in each damper device. It is executed by the program.

The present invention is also a room pressure control device, and is configured as follows in order to solve the technical problem described above. That is, the chamber pressure control device according to the third invention is connected to each of the air supply devices each having an air supply pipe connected to at least two chambers that communicate with each other through an opening that is opened and closed by a door. An exhaust device including an exhaust pipe, a damper attached to at least one of the air supply device and the exhaust device, and a damper for adjusting a flow rate of air supply or exhaust for each of the chambers and a damper for controlling movement of the damper A damper device including a controller, and a detection unit that detects an opening operation and an opening degree of the door and supplies a detection signal to the damper controller, and each of the damper controllers is configured such that when the door is closed, First chamber pressure control means for feedback-controlling the damper opening of the damper device so as to maintain the atmospheric pressure in each room at a preset target chamber pressure, and the detection supplied from the detection means Second chamber pressure control means for controlling the damper opening of each damper device with respect to each chamber with a content different from the first chamber pressure control when the door is opened or opened based on the number And a maximum damper opening position in a slight fluctuation of the damper opening when the damper opening of the damper device is adjusted as needed to control the atmospheric pressure of each chamber to the target chamber pressure when the door is closed. A storage device for storing a minimum damper opening position, and in the second chamber pressure control means, the damper opening degree of the damper device from the opening operation of the door to a predetermined opening degree It is changed to a constant air flow value opening degree that is almost intermediate between the maximum damper opening position and the minimum damper opening position in the slight fluctuation of the damper opening degree during execution of the chamber pressure control means, and the door exceeds the predetermined opening degree. While the damper device is Pa opening, characterized in that it is changed to the Teikazeryouchi predetermined increase and decrease the opening degree than the opening degree.

The room pressure control device of the third invention is composed of the essential components described above. As one embodiment of the third invention, in each of the damper controllers, the door is closed from the predetermined opening degree. Until the door is closed from the predetermined degree of opening, the damper opening degree of the damper device is the second chamber pressure control means. It is changed to a constant air flow value opening degree that is substantially intermediate between the maximum damper opening position and the minimum damper opening position in the slight fluctuation of the damper opening degree during the one-chamber pressure control.
As another embodiment of the room pressure control device according to the third aspect of the present invention, the change to the constant air volume value opening degree in the second room pressure control means is that the opening operation of the door and the opening to the predetermined opening degree are performed. The second chamber pressure is executed by a first detection signal that is supplied when the door is detected, or a first detection signal that is supplied when opening is detected until the door is closed from the predetermined opening degree. The change to the damper opening degree, which is increased or decreased by a predetermined amount from the constant air volume value opening degree in the control means, is executed by a second detection signal supplied when the movement of the door exceeding the predetermined opening degree is detected. .
According to a fourth aspect of the present invention, there is provided an air supply device including an air supply pipe connected to at least two chambers communicating with each other through an opening opened and closed by a door, and connected to each of the chambers. An exhaust device including an exhaust pipe, a damper attached to at least one of the air supply device and the exhaust device, and a damper for adjusting a flow rate of air supply or exhaust for each of the chambers and a damper for controlling movement of the damper A damper device including a controller, and a detection unit that detects an opening operation and an opening degree of the door and supplies a detection signal to the damper controller, and each of the damper controllers is configured such that when the door is closed, First chamber pressure control means for feedback-controlling the damper opening of the damper device so as to maintain the atmospheric pressure in each room at a preset target chamber pressure, and the detection signal supplied from the detection means When the door is opened or opened based on the second chamber pressure control means for controlling the damper opening of the damper device for each chamber with a content different from the first chamber pressure control; The maximum damper opening position and the minimum damper when the damper opening of the damper device is adjusted as needed to control the atmospheric pressure of each chamber to the target chamber pressure when the door is closed. A storage device that stores an opening position, and in the second chamber pressure control means, the damper opening degree of the damper device is the first chamber pressure from the opening operation of the door to a predetermined opening degree. While the control means is being executed, the air flow is changed to a constant air flow amount opening degree that is substantially intermediate between the maximum damper opening position and the minimum damper opening position in the slight fluctuation of the damper opening, and the door exceeds the predetermined opening degree. The damper of the damper device Degrees, characterized in that the feedback control so as to come close to the target chamber pressure the chambers of the chamber pressure in the range of a preset adjustment range from the Teikazeryouchi opening.
The room pressure control device according to the fourth invention comprises the above-described essential components. As one embodiment of the fourth invention, in each of the damper controllers, the door is closed from the predetermined opening degree. Until the door is closed from the predetermined degree of opening, the damper opening degree of the damper device is the second chamber pressure control means. It is changed to a constant air flow value opening degree that is substantially intermediate between the maximum damper opening position and the minimum damper opening position in the slight fluctuation of the damper opening degree during the one-chamber pressure control.
As another embodiment of the room pressure control device according to the fourth invention, the change to the constant air volume value opening degree in the second room pressure control means is the opening operation of the door and the opening to the predetermined opening degree. The second chamber pressure is executed by a first detection signal that is supplied when the door is detected, or a first detection signal that is supplied when opening is detected until the door is closed from the predetermined opening degree. Feedback control within the range of the adjustment range set in advance from the constant air volume value opening degree so that the chamber pressure of each chamber in the control approaches the target chamber pressure is the movement of the door exceeding the predetermined opening degree. This is executed by the second detection signal supplied when the signal is detected.
As another embodiment of the third and fourth aspects of the invention, in the room pressure control device, the maximum damper opening position and the minimum damper opening degree in the slight fluctuation of the damper opening during execution of the first chamber pressure control means. The position is updated and stored in the storage device of the damper device.

  According to the chamber pressure control method and apparatus of the present invention, when a change occurs in the chamber pressure by opening a door that opens and closes the opening that communicates the two chambers, the damper opening of the damper device is set to a predetermined constant air flow value. The damper opening is controlled by feedback within a predetermined adjustment range so that the opening becomes close to the target chamber pressure, and when the door is closed, the damper of the damper device maintains the target chamber at the target chamber pressure. As the air flow passing through the damper device is adjusted at any time by changing the opening to a constant air flow value opening degree, the damper adjustment position in the damper device when the door is opened is not disturbed. The air pressure in the target chamber can be quickly returned to the target chamber pressure when the door is closed, and the flow of air flowing from the high chamber pressure target chamber to the low chamber pressure target chamber is maintained while the door is open. So you can Air had chamber pressure internal can be prevented from mixing with air in the other space.

  In the chamber pressure control method and apparatus of the present invention, the first detection signal is supplied when the door attached to the opening communicating at least two chambers opens from the opening operation to the predetermined opening degree, and the damper device is based on the first detection signal. Because the damper opening of the damper is set to the predetermined constant air flow value opening, the damper variation width of the damper device can be reduced even when the door is slightly opened, thereby controlling the appropriate damper opening thereafter. be able to.

  Furthermore, in the room pressure control method and apparatus of the present invention, after the damper opening of the damper device is changed to a predetermined constant air volume value opening based on the first detection signal, the damper pressure of the damper device is changed based on the second detection signal. Since either the adjustment to increase or decrease the damper opening by a predetermined amount or the control to approach the target chamber pressure within a predetermined range is performed, there is no need to perform complicated calculation for the selection of the damper opening of the damper device . Therefore, since it is not necessary to use a central control device (main controller), and processing can be performed by the control unit of the damper controller provided in the damper device itself in order to move the damper, this room pressure control method and device Can be formed at low cost.

  Hereinafter, a preferred embodiment shown in the accompanying drawings will be further described for the room pressure control method and apparatus of the present invention. FIG. 1 is a conceptual diagram of an air conditioning system using a room pressure control device according to a first embodiment of the present invention. In this air conditioning system, two chambers 10 and 11 adjacent to each other are taken as an example. However, the number of chambers is not limited to two, and there may be three or more chambers. In the air conditioning system shown in FIG. 1, the chamber pressures of the first chamber 10 having the highest target chamber pressure (target chamber pressure) and the second chamber 11 having the target chamber pressure lower than that of the first chamber 10 are set according to the present invention. It is controlled by the room pressure control method and its apparatus. In addition, each target chamber pressure in the first chamber 10 and the second chamber 11 is higher than the outdoor atmospheric pressure.

  The first and second chambers 10 and 11 are partitioned by a side wall 12 and further partitioned from the outside by a ceiling (not shown), a floor 13, and a peripheral wall 14 surrounding the chambers 10 and 11. As shown in FIG. 2, an entrance / exit (opening) K that connects the first chamber 10 and the second chamber 11 is formed in the side wall 12, and the opening K can be opened and closed by a door 15. In addition, an entrance / exit that connects the second chamber 11 and the outside is formed (opening), and this opening can also be opened and closed by the door 16.

  In the former door 15, one side portion extending in the vertical direction is attached to the frame member of the side wall 12 defining the opening K with a hinge, and the first chamber 10 is centered on the one side portion extending in the vertical direction. This is a swing-type, single-open door that turns from 0 to 180 degrees toward the second chamber 11. Therefore, the door 15 cannot be opened so as to enter the first chamber 10 from the second chamber 11 side. When the door 15 is opened, the first and second chambers 10 and 11 communicate with each other through an opening K that is opened and closed by the door 15, and the both chambers 10 and 11 can be moved through the opening K. Two open / close sensors 17a and 17b are attached to the door frame in which the door 15 is accommodated when the door 15 is closed. Each open / close sensor 17a, 17b is connected to a damper controller, which will be described later, via an interface 18.

  The latter door 16 is a swing-type single-open door that is attached to the door frame in the same manner as the door 15 and turns in the range of 0 to 180 degrees with respect to the peripheral wall 14. When the door 16 is opened, the second chamber 11 communicates with the outside through the door that is opened and closed by the door 16, and the second chamber 11 and the outdoor can be communicated through the door. An air supply duct 20 (air supply pipe) for supplying a predetermined amount of air to each of the chambers 10 and 11 is connected to the first and second chambers 10 and 11, and a predetermined amount of air is supplied from the first and second chambers 10 and 11. An exhaust duct 26 (exhaust pipe) for discharging air is connected. The air supply duct 20 is formed of a main duct 21 and branch ducts 22 a and 22 b that branch from the main duct 21 and extend toward the chambers 10 and 11. An air supply fan 23 is attached to the main duct 21, and one constant air volume unit 24, 25 is attached to each branch duct 22a, 22b. Each of the branch ducts 22a and 22b is connected to an air supply port (not shown) provided on the ceiling of each of the rooms 10 and 11, and is individually communicated with the rooms 10 and 11. The constant air volume units 24 and 25 adjust the amount of air passing through the constant air volume units 24 and 25 in response to fluctuations in the internal air pressure of the air supply duct 20, and the amount of air supplied to the chambers 10 and 11 is always constant. Hold on.

  On the other hand, the exhaust duct 26 is formed of a main duct 27 and branch ducts 28 a and 28 b that branch from the main duct 27 and extend toward the chambers 10 and 11. Each of the branch ducts 28a and 28b is connected to an exhaust port 32 provided on the ceiling of each of the rooms 10 and 11, and is individually connected to each of the rooms 10 and 11. An exhaust fan 29 is attached to the main duct 27, and one damper device 30, 31 is attached to each branch duct 28a, 28b. These damper devices 30 and 31 rotate dampers (opening and closing blades) arranged in the air flow path as air volume adjusting means by the rotational force of the modular roll motors (rotating machines) 30a and 31a to open and close the air flow paths. Adjust the amount of air flowing through the air flow path. Moreover, each damper apparatus 30 and 31 is provided with damper controllers 30b and 31b which control the motion of the modular roll motors 30a and 31a.

  As the operation of the damper devices 30 and 31, when the modular roll motors 30a and 31a are rotated by the control signals from the damper controllers 30b and 31b, the dampers are rotated and set to a predetermined angle. The opening degree is adjusted, and as a result, the flow rate of air passing through the air flow path is adjusted. In addition, a parallel blade | wing damper or a counter blade | wing damper can be used for a damper.

  The first and second chambers 10 and 11 are provided with pressure sensors 33 and 34 for continuously measuring the atmospheric pressures of the respective chambers 10 and 11 in time series. The pressure sensor 33 is connected to the damper of the damper device 30 by an interface 35. Connected to the controller 30 b, the pressure sensor 34 is connected to the damper controller 31 b of the damper device 31 through the interface 35. The target chamber pressure in the first and second chambers 10 and 11 is not particularly limited, and the target chamber pressure can be set as appropriate within a predetermined range depending on the use and volume of each chamber 10 and 11. Further, the target chamber pressure of the second chamber 11 may be higher than that of the first chamber 10, and the target chamber pressure of each of the chambers 10 and 11 may be lower than the outdoor atmospheric pressure. The constant air volume units 24 and 25, the damper devices 30 and 31, the open / close sensors 17a and 17b, and the pressure sensors 33 and 34 are supplied with predetermined power via wiring (not shown).

  By the way, air tight is used for the doors 15 and 16 in order to maintain the airtightness of the chambers 10 and 11. Further, the door knob is a gremon handle, and when the doors 15 and 16 are closed, the gremon handle is locked to enhance the airtightness of the doors 15 and 16. A limit switch (trigger sensor) is used for the open / close sensor 17a. The limit switch converts the dead bolt movement of the doors 15 and 16 into a contact signal and outputs an ON / OFF signal. The open / close sensor 17a detects an operation of rotating the gremon handle before and after the doors 15 and 16 are opened.

  A magnet switch is used for the open / close sensor 17b attached to the door 15, and the magnet switch detects the degree of opening of the door 15 by magnetic force. Specifically, the open / close sensor 17a is attached to a door frame that faces the door knob when the door 15 is closed as shown in FIG. The open / close sensor 17b is attached to a door frame at a position where the magnet switch reacts when the door 15 has a predetermined opening degree. By using the play (stroke) until the magnet switch reacts, the degree of opening (opening angle) of the door to which the open / close sensor 17b responds can be set to a predetermined value. By appropriately selecting the position, the degree of opening of the door to which the sensor 17b responds can be freely set. When the door 15 is opened, if the knob of the door 15 is turned, the dead bolt moves, so that the open / close sensor 17a reacts at that time, and then the air tightness of the door 15 is released and reacts in the order of the open / close sensor 17b. On the contrary, when the door 15 is closed, the open / close sensor 17b reacts, and then the open / close sensor 17a reacts.

  In the air conditioning system using this room pressure control device, as shown by F in FIG. 1, a predetermined amount of air sent by the air supply blower 23 is supplied to each of the rooms 10 and 11 through the air supply duct 20. On the other hand, a predetermined amount of air is exhausted from the chambers 10 and 11 through the exhaust duct 26 to the outside by the exhaust fan 29. Further, in the air conditioning system using this room pressure control device, even if a pressure fluctuation occurs in the air flowing inside the air supply duct 20, the air flow rate of the branch ducts 22a and 22b is reduced by the constant air volume units 24 and 25. A constant amount of air that is constantly maintained is supplied to the chambers 10 and 11. The amount of air exhausted from the chambers 10 and 11 through the exhaust duct 26 to the outside is adjusted by damper devices 30 and 31. When the doors 15 and 16 are closed, the chamber pressure in the first and second chambers 10 and 11 is set to the target chamber pressure set for each chamber, and the constant air volume units 24 and 25 and the damper device 30. , 31.

  The damper controllers 30b and 31b of the damper devices 30 and 31 are computers configured by a microprocessor (not shown) having a central processing unit (CPU) that performs predetermined calculations and a storage device that stores predetermined conditions. It is. The central processing unit of each damper controller 30b, 31b starts an application program stored in the storage device, and according to a predetermined operating system, stores an initial condition storage means for storing a predetermined condition, An indoor pressure adjustment control (first chamber pressure control) means for holding the atmospheric pressure at the target chamber pressure is executed. Here, “the actual opening degree of the door 15” means an angle θ (door opening angle θ) formed by the side wall 12 and the door 15 when the door 15 is opened as shown in FIG. . Further, the central processing unit of each damper controller 30b, 31b starts an application program stored in the storage device, and according to a predetermined operating system, opens and closes the door 15 and an initial condition storage means for storing a predetermined condition. A door opening / closing identifying means for storing and identifying the degree of actual opening of the door 15 in a plurality of stages, and a damper opening adjustment control for adjusting the damper opening in the damper devices 30 and 31 to a predetermined state (second) (Chamber pressure control) means. Here, the first chamber 10 and the second chamber 11 communicated through the opening K when the door 15 is opened are referred to as “target chambers”.

  During activation of the air conditioning system using this room pressure control device, the measured room pressures of the first and second chambers 10 and 11 are constantly input from the pressure sensors 33 and 34 to the storage devices of the damper controllers 30b and 31b. Moreover, the opening / closing information of the door 15 is always input from the opening / closing sensors 17a, 17b to the storage devices of the damper controllers 30b, 31b. The opening / closing information includes the actual opening degree of the door 15 as well as whether the door 15 is in an open state or a closed state. When each damper controller 30b, 31b determines that the door 15 is in a closed state, it continuously executes the indoor pressure adjustment control (first chamber pressure control) for the first and second chambers 10, 11. To do. Next, when the door 15 is opened, the indoor pressure adjustment control (first chamber pressure control) for the first and second chambers 10 and 11 connected through the opening K is temporarily suspended. When the indoor pressure adjustment control is temporarily suspended, the damper controllers 30b and 31b in the damper devices 30 and 31 adjust the damper opening degree of the damper devices 30 and 31 according to predetermined control contents (second chamber pressure control). Then, the amount of air passing through the damper devices 30 and 31 is changed. Further, when the damper controllers 30b and 31b determine that the door 15 in the opened state is closed, the damper controllers 30b and 31b end the second chamber pressure control that has been performed so far, and then the first and second chambers 10 and 11 are performed. Then, the indoor pressure adjustment control (first chamber pressure control) is executed again.

  The details of the process of this system executed by each damper controller 30b, 31b will be described based on the flowchart of FIG. A user of the first and second chambers 10 and 11 opens the door 16 to enter the second chamber 11, closes the door 16, and then a main power switch (not shown) of the room pressure control device in this air conditioning system. To turn on the chamber pressure control device. It is assumed that the door 16 is not opened or closed during the activation of the room pressure control device. Further, it is assumed that various conditions necessary for executing the process of this system are input in advance to the damper controllers 30b and 31b via an input device or the like. Necessary conditions include a target indoor pressure, and a virtual opening degree (virtual opening angle of the door 15) when it is assumed that the door 15 is opened. These input conditions are stored in the storage devices of the damper controllers 30b and 31b (initial condition storage means).

  The storage devices of the damper controllers 30b and 31b store the correspondence between the actual opening degree of the door 15 and the virtual opening degree of the door 15. The damper controllers 30b and 31b identify the opening / closing of the door 15 based on the ON / OFF signals of the opening / closing sensors 17a and 17b. When the open / close sensors 17a and 17b are OFF, the door 15 is closed with the actual opening degree of the door 15 being 0 degrees. More specifically, the knob of the door 15 is not turned by the user. When the open / close sensor 17a is ON and the open / close sensor 17b is OFF, the knob of the door 15 is turned, or the actual opening degree of the door 15 is in the range of more than 0 degree and 30 degrees or less. The open / close sensor 17b is attached to a door frame position that is turned on when the opening angle of the door 15 reaches 30 degrees. Therefore, when the two open / close sensors 17a and 17b are both ON, the actual opening degree of the door 15 is in a range exceeding 30 degrees.

  Therefore, when the chamber pressure control device is activated, each damper controller 30b, 31b determines whether the door 15 is in a closed state (S-1). When the damper controllers 30b and 31b determine that the door 15 is in a closed state based on the opening / closing information from the opening / closing sensors 17a and 17b, the first chamber pressure control is performed on the first and second chambers 10 and 11, respectively. That is, the room pressure adjustment control is continuously executed (S-2), and it is determined whether the room pressures in the first and second chambers 10 and 11 are within the target room pressure range (S-3). In the indoor pressure adjustment control, each damper controller 30b, 31b converts the target chamber pressure (target value) of each chamber 10, 11 into a reference input signal (setting), and the control target performs a predetermined operation based on the deviation. Make a control signal to adjust (adjust). Furthermore, the control signal is converted into an operation signal (operation amount) necessary for the operation (operation), and the control amount when the fluctuation occurs is detected and converted into a physical quantity (main feedback amount) of the same type as the reference input signal. Conversion (detection), and the physical quantity is fed back and compared with the reference input signal. In the indoor pressure adjustment control, each damper controller 30b, 31b performs feedback control in which each element of setting, adjustment, operation, and detection forms a closed loop. Here, the operation amount is the voltage, current, and frequency for controlling the rotation of the modular roll motors 30a and 31a, the controlled object is the motor damper of the damper devices 30 and 31, and the control amount is the rotation angle of the motor damper (the blade opening degree). Is the amount of air passing through the air flow path). The deviation is an operation signal that corrects the control amount by the difference between the target chamber pressure and the main feedback amount. Note that the control operation of the feedback control is PID control.

  In the indoor pressure adjustment control which is the first chamber pressure control, the actually measured indoor pressures of the chambers 10 and 11 measured by the pressure sensors 33 and 34 are input to the damper controllers 30b and 31b, and the input measured indoor pressure and A predetermined angle control amount is created by constantly comparing the set target chamber pressures of the first and second chambers 10 and 11. The damper controllers 30b and 31b change the rotation angle by rotating the motor damper based on the angle control amount, and narrow or widen the air flow path, thereby reducing the amount of air passing through the damper devices 30 and 31. Adjust (S-4). The damper controllers 30b and 31b hold the rotation angle of the motor damper at that time when the measured indoor pressure falls within the range of the target chamber pressure. The variation of the opening degree of the motor damper when such first chamber pressure control (room pressure adjustment control) is being executed is shown in the characteristic diagram of FIG. 4 (the damper of the damper device 30 that controls the first chamber 10 to the target chamber pressure). (Characteristic diagram showing opening degree fluctuation together with room pressure fluctuation and door opening / closing operation) is shown as a line portion 36. In the characteristic diagram shown in FIG. 4, the fluctuation of the indoor pressure in the first chamber 10 is indicated by a characteristic line 40, and the opening / closing operation of the door 15 is indicated by ON / OFF signals.

  When the first chamber pressure control is being executed, when the handle of the door 15 is turned and the door 15 is opened as shown in FIG. 2, the damper controllers 30b and 31b are set in step 1 (S-1). Determines that the door 15 has been opened based on the open / close information from the open / close sensors 17a and 17b, identifies the opened door 15 (S-5), and communicates through the opening K that the door 15 opens and closes. The first chamber pressure control is temporarily interrupted for the chambers to be set, and for each of these chambers, the door opening degree (angle) is set to 0 degrees (when the door knob is rotated) to 30 degrees. When the air volume value (first constant air volume value) is changed (first operation of the second chamber pressure control) and the door opening degree (angle) exceeds 30 degrees, the predetermined air volume value is increased or decreased by a predetermined amount. The set air volume value (second air volume value) is changed (second operation of the second chamber pressure control) (S-6). . This second chamber pressure control will be described more specifically later. Thereafter, when the opened door 15 is closed, the second chamber pressure control is terminated and the process returns to the first chamber pressure control again (S-7). When the user ends the use of the first and second chambers 10 and 11 and goes out of the room, the main power switch (not shown) of the room pressure control device in the air conditioning system is turned off to turn off the room pressure control device. After ending (S-8), the door 16 is opened to leave the room.

Here, the specific content of the second chamber pressure control will be described below. While the first chamber pressure control is being executed, the damper opening degree of the damper devices 30 and 31 slightly fluctuates, and the state in which the atmospheric pressure in each chamber 10 and 11 is adjusted to the target chamber pressure is shown in FIG. This is apparent from the line portion 36 in the characteristic diagram. Thus, when the first chamber pressure control is being executed, if the handle of the door 15 is turned (position t ₁ on the horizontal axis (time) in the characteristic diagram of FIG. 4), the open / close sensor 17a is turned on. The detection signal (first detection signal) is supplied to the damper controllers 30b and 31b. As a result, the damper controllers 30b and 31b determine that the door 15 is opened and the first and second chambers 10 and 11 communicate with each other through the opening K, and temporarily interrupt the first chamber pressure control. To do.

By the way, when only the open / close sensor 17a is ON and the open / close sensor 17b is OFF, the degree of opening of the door 15 is in the range of 0 to 30 degrees, and the door 15 is about to be opened. Or slightly open. Therefore, after that, it is not known whether the door 15 is fully opened or closed again. Therefore, each damper controller 30b, 31b changes the damper opening of the damper device 30, 31 to a set value (constant air volume value opening) . The “set value of the damper opening” refers to the maximum opening position (maximum damper opening position) and the minimum in the minute fluctuation of the damper opening in the damper devices 30 and 31 while the first chamber pressure control is being executed. This means an opening approximately in the middle of the opening position (minimum damper opening position) . Therefore, when the first chamber pressure control is being executed, the position at which the damper is opened to the maximum (maximum opening position) and the position at which the damper is closed to the minimum (minimum opening position) are the positions of the damper controllers 30b and 31b. It is stored while being updated sequentially in the storage unit.

  Thus, when the opening degree of the door 15 is 0 degree-30 degree | times, while changing the damper of the damper apparatuses 30 and 31 to a setting opening degree, the damper opening degree is maintained (line part 37a in the characteristic view of FIG. 4). As a result, the airflow value passing through the damper devices 30 and 31 (first constant airflow value) is changed. As a result, the hunting of the damper opening as described above does not occur. Therefore, when the door is closed, the damper opening can be quickly returned to an appropriate state convenient for controlling the damper opening to the target chamber pressure. Can do.

Next, when the user opens the door 15 continuously and the degree of opening exceeds 30 degrees, the open / close sensor 17b is turned on and the detection signal (second detection signal) is supplied to the damper controllers 30b and 31b. (Position t ₂ on the horizontal axis (time) in the characteristic diagram of FIG. 4). When each damper controller 30b, 31b receives a signal from the open / close sensor 17b, the open / close sensor 17a is also ON, so it is determined that the door 15 has been opened beyond 30 degrees. Thereby, damper controller 30b, 31b changes to the damper opening degree increased / decreased 10%-30% on the basis of the opening degree of the damper maintained at the predetermined opening degree.

  By the way, when the door 15 is largely opened, in the first chamber 10 having a high chamber pressure, the internal air passes through the opening K and flows into the second chamber 11 having a low chamber pressure, so that both chamber pressures fluctuate. . That is, the chamber pressure decreases in the first chamber 10 having a high chamber pressure, and the chamber pressure increases in the second chamber 11 having a low chamber pressure. In such a case, if the first chamber pressure control that sequentially controls the target chamber pressure is maintained, a severe disturbance (hunting) of the damper opening occurs, and the damper opening is controlled to the target chamber pressure when the door is closed. It is not possible to quickly return to an appropriate state convenient for the above. In addition, when the hunting of the damper opening as described above occurs, it is considered that the inflow of air from the second chamber 11 to the first chamber 10 occurs depending on the position of the damper. This means that the air in the first chamber 10 is mixed with the air in the external space and the environment in the first chamber changes, and the significance of maintaining the chamber pressure in the first chamber 10 high is lost. Become.

  Therefore, in this chamber pressure control method, specifically, the first chamber 10 is exhausted in order to maintain the flow of air from the first chamber 10 having a high chamber pressure to the second chamber 11 having a low chamber pressure. The damper opening degree of the damper device 30 is reduced (squeezed) by 10% to 30% so as to reduce the air volume (the line portion 37b in the characteristic diagram of FIG. 4), and the air volume value passing through the damper apparatus 30 is set to the second constant air volume value. And On the other hand, for the second chamber 11, the damper opening of the damper device 31 is increased (opened) by 10% to 30% in order to increase the amount of air exhausted through the damper device 31. In any case, the chamber pressures of the first chamber 10 and the second chamber 11 deviate from the target chamber pressure, but the second fixed air volume value obtained by increasing or decreasing the air volume passing through the damper devices 30 and 31 by a predetermined amount from the first constant air volume value, respectively. By changing the damper opening so as to reduce the decrease in the chamber pressure of the first chamber 10 having a high chamber pressure, the flow of air from the first chamber 10 to the second chamber 11 having a low chamber pressure is prevented. In addition, the dampers of the damper devices are fixed at the damper opening so that the air volume passing through the damper devices is increased or decreased by a predetermined amount from the constant air volume value. Since an air flow passing through the opening K toward the second chamber 11 having a low pressure is formed, it is possible to prevent the air in the second chamber 11 having a low chamber pressure from flowing into the first chamber 10 having a high chamber pressure.

  In addition, the increase / decrease of the damper opening degree in each damper apparatus 30 and 31 mentioned above is a case where damper apparatus 30 and 31 is installed in each branch duct 28a, 28b of the exhaust duct 26, and damper apparatus 30,31 is When installed in the branch ducts 22a and 22b in the air supply duct 20, the airflow values passing through the damper devices 30 and 31 are opposite to each other. That is, when the damper devices 30 and 31 are installed in the air supply duct 20, the damper opening degree of the damper device 30 installed in the branch duct 22 a supplying air to the first chamber 10 is increased to increase the damper On the other hand, the amount of air supplied through the damper device 31 is increased by decreasing the damper opening of the damper device 31 installed in the branch duct 22b that supplies air to the second chamber 11 while increasing the amount of air supplied through the device 30. Will be reduced.

Next, when the door 15 is turned in the closing direction and the open / close sensor 17b is turned off (position t ₃ on the horizontal axis (time) in FIG. 4), detection signals from the open / close sensor 17b to the damper controllers 30b and 31b are sent. Stopped. However, since the open / close sensor 17a is in an ON state, the detection signal is continuously supplied from the open / close sensor 17a. As a result, each damper controller 30b, 31b determines that the door 15 is in a closed state, and the amount of air passing through the damper devices 30, 31 is determined as indicated by the line portion 37c in the characteristic diagram of FIG. The damper opening is changed so that the constant air flow value (constant air flow value opening) is the same as when the door is opened up to 30 degrees from the opening operation. Thereafter, when the door 15 is completely closed and the open / close sensor 17a is turned off (position t ₄ on the horizontal axis (time) in FIG. ₄ ), the detection signal from the open / close sensor 17a is also stopped. Thereby, at the same time as the second chamber pressure control for the damper devices 30 and 31 is completed, the first controller of each of the damper controllers 30b and 31b executes the first chamber pressure control (room pressure adjustment control) again.

  As described above, in the second chamber pressure control, when the opening operation of the door 15 is detected and subsequently, when the door 15 is opened to a predetermined opening degree (30 degrees), the first chamber pressure control that has been performed until then is performed. (Indoor pressure regulation control) is interrupted, and the damper opening degree of the damper devices 30 and 31 is set to the maximum opening degree in the minute fluctuation of the damper opening amount in the damper devices 30 and 31 while the first chamber pressure control is being executed. And the air flow value passing through the damper devices 30 and 31 is changed to the first constant air flow value by changing the opening to approximately the intermediate opening between the opening and the minimum opening (the first operation in the second chamber pressure control). When it is opened beyond 30 degrees, the airflow value passing through the damper devices 30 and 31 is changed to the opening degree increased or decreased by 10% to 30% from the intermediate opening degree (second operation in the second chamber pressure control). Is changed to the second air flow value and the door 15 starts to close 0 degree intermediate degree of opening as described above again when it is determined that it is now less, when the door 15 is fully closed and then those returning to your first chamber pressure. Therefore, even if it returns to 1st chamber pressure control after the door 15 is closed, a damper opening degree can be adjusted rapidly and the object chamber in which the fluctuation | variation occurred in the chamber pressure can be quickly returned to the target chamber pressure. At the same time, since the air in the second chamber 11 communicating with the first chamber 10 having a high chamber pressure flows into the first chamber 10 while the door 15 is opened, the mixing of the air can be prevented. The environment can be maintained.

  In the above-described chamber pressure control method according to the first embodiment of the present invention, the content differs from the first chamber pressure control until the door 15 is opened beyond the predetermined opening degree after the opening operation until the door is closed. However, in the room pressure control method of the present invention, the second room pressure control can be executed with another control content described below as the second embodiment. That is, in the first operation in the second chamber pressure control according to the chamber pressure control method according to the second embodiment, the damper devices 30 and 31 between the opening operation of the door 15 and a predetermined opening degree (30 degrees). The damper opening is exactly the same as that of the first embodiment described above, and the maximum opening and the minimum opening in the minute fluctuation of the damper opening in the damper devices 30 and 31 while the first chamber pressure control is being executed. The air flow value passing through the damper devices 30 and 31 is changed to the first constant air flow value by changing the opening to an approximately middle degree (first operation of the second chamber pressure control).

  Thereafter, in the second operation when the door 15 is opened beyond a predetermined opening degree (30 degrees), unlike the case of the first embodiment, the damper controllers 30b and 31b are provided in the first and second chambers. Feedback control is performed within a predetermined adjustment range so that the chamber pressures 10 and 11 approach the target chamber pressure. Specifically, the first chamber 10 will be described. As shown in the characteristic diagram of FIG. 5 showing the indoor pressure in the first chamber 10 and the damper opening degree of the damper device 30 together with the opening / closing operation of the door 15, the damper opening of the damper device 30 is opened. Since the chamber pressure in the first chamber 10 decreases when the door 15 is largely opened (second detection signal ON), the target chamber pressure is within a predetermined adjustment range (range indicated by reference numeral 38 in FIG. 5). As a result of feedback control as shown by a curved line portion 39 in the characteristic diagram of FIG. As a result, the amount of air exhausted is reduced, so that the chamber pressure in the first chamber 10 maintains a high chamber pressure in relation to the chamber pressure of the second chamber 11 even if it does not reach the target chamber pressure. Therefore, an air flow toward the second chamber 11 continues to be formed through the opening K, mixing of air in the first chamber 10 is prevented, and even if the door 15 is closed and the first chamber pressure control is resumed. In addition, the damper opening can be quickly adjusted, and the target chamber in which the chamber pressure fluctuates can be quickly returned to the target chamber pressure.

  4 and FIG. 5, the characteristic lines 36a, 37a, 37b, and 37c showing the fluctuations in the damper opening degree are related to the damper device 30 for the first chamber 10 having a high chamber pressure as described above. In the case of the damper device 31 for the second chamber 11 having a lower chamber pressure than the first chamber 10, the air from the first chamber 10 opens the opening K as already described. As a result, the amount of air supplied to the second chamber 11 is the same as that of the second chamber 11, so that the damper opening is increased in contrast to the damper device 30 for the first chamber 10. As a result, the exhaust amount is increased and adjusted so as to approach the target chamber pressure of the second chamber 11.

  With respect to the chamber pressure control method and apparatus according to the present invention, the above-described embodiment has been described with respect to the case where there are two chambers as an example in which these chambers communicate with each other by opening the door. Needless to say, the present invention can also be applied to the case where the chambers can communicate with each other by opening and closing the doors.

It is a conceptual diagram of the air-conditioning system using the room pressure control apparatus which concerns on one Embodiment of this invention. It is a perspective view which shows the attachment state of the door which opens and closes the doorway which connects the two chambers in the air-conditioning system conceptual diagram of FIG. 1, and the opening-and-closing sensor provided in this. It is a flowchart figure about an example of the room pressure control method which concerns on this invention. It is a characteristic view which shows the damper opening degree fluctuation | variation of a damper apparatus with one embodiment of the room pressure control method which concerns on this invention with the room pressure fluctuation | variation and the opening / closing operation | movement of a door. It is a characteristic view which shows the damper opening degree fluctuation | variation of a damper apparatus with other room pressure fluctuation | variation and door opening / closing operation | movement about other embodiment of the room pressure control method which concerns on this invention.

DESCRIPTION OF SYMBOLS 10 1st chamber 11 2nd chamber 12 Side wall 13 Floor 14 Perimeter wall 15,16 Door 17a, 17b Open / close sensor 18, 35 Interface 20 Air supply duct 21 Core duct 22a, 22b Branch duct 23 Air supply fan 24, 25 Constant air volume unit 26 Exhaust duct 27 Main duct 28a, 28b Branch duct 29 Exhaust blower 30, 31 Damper device 30a, 31b Modular roll motor 30b, 31b Damper controller 32 Exhaust port 33, 34 Pressure sensor 36 Damper opening by first chamber pressure control Change 37a, 37b, 37c, 39 Damper opening change by second chamber pressure control 39 Damper opening characteristic line during second chamber pressure control in second embodiment 40 Characteristic line of chamber pressure fluctuation in target chamber

Claims (15)

An air supply device having an air supply pipe and an exhaust pipe connected to each of at least two chambers that communicate with each other through an opening that is opened and closed by a door, and a damper device that can change a passing air amount attached to at least one of the exhaust devices A pressure control method for adjusting the damper opening of the damper device to maintain the atmospheric pressure in each room at a different target room pressure set in advance,
When the door is closed, a first chamber pressure control that feedback-controls each damper opening to maintain the atmospheric pressure in each chamber at the preset target chamber pressure, and when the door is opened or When opened, the second chamber pressure control for controlling the damper opening of each damper device with a content different from the first chamber pressure control for each chamber, and the door is closed from the opened state Occasionally, and a returning the said damper opening degree control the first chamber pressure of each damper device,
In the second chamber pressure control, the damper opening degree of the damper device is a maximum damper opening degree in a slight fluctuation of the damper opening degree during the first chamber pressure control from the opening operation of the door to a predetermined opening degree. The damper opening of the damper device is changed to the constant air flow value opening while the door is over the predetermined opening degree, and is changed to a constant air flow opening that is substantially between the position and the minimum damper opening position. The room pressure control method is characterized in that the opening is changed to an opening degree increased or decreased by a predetermined amount. In the chamber pressure control method, the second chamber pressure control is executed until the door is closed from the predetermined opening degree. In the second chamber pressure control, the door is closed from the predetermined opening degree. The damper opening of the damper device is a constant air flow value opening that is substantially intermediate between the maximum damper opening position and the minimum damper opening position in the slight fluctuation of the damper opening during the first chamber pressure control. The room pressure control method according to claim 1, which is changed to The first detection signal supplied when the change to the constant air volume value opening in the second chamber pressure control detects the opening operation of the door and the opening to the predetermined opening degree, or the door To the damper opening degree that is executed by the first detection signal supplied when the opening from the predetermined opening degree until it is closed is detected and is increased or decreased by a predetermined amount from the constant air amount value opening degree in the second chamber pressure control. The room pressure control method according to claim 2, wherein the change is executed by a second detection signal supplied when movement of the door exceeding the predetermined opening degree is detected. An air supply device having an air supply pipe and an exhaust pipe connected to each of at least two chambers that communicate with each other through an opening that is opened and closed by a door, and a damper device that can change a passing air amount attached to at least one of the exhaust devices A pressure control method for adjusting the damper opening of the damper device to maintain the atmospheric pressure in each room at a different target room pressure set in advance,
When the door is closed, a first chamber pressure control that feedback-controls each damper opening to maintain the atmospheric pressure in each chamber at the preset target chamber pressure, and when the door is opened or When opened, the second chamber pressure control for controlling the damper opening of each damper device with a content different from the first chamber pressure control, and when the door is closed from the open state, Returning the damper opening of each damper device to the first chamber pressure control,
In the second chamber pressure control, the damper opening degree of the damper device is a maximum damper opening degree in a slight fluctuation of the damper opening degree during the first chamber pressure control from the opening operation of the door to a predetermined opening degree. The damper opening degree of the damper device is changed to a room pressure of each chamber while the door is over the predetermined opening degree while the door is over the predetermined opening degree. Is controlled so as to approach the target chamber pressure within a preset adjustment range from the constant air volume value opening degree. In the chamber pressure control method, the second chamber pressure control is executed until the door is closed from the predetermined opening degree. In the second chamber pressure control, the door is closed from the predetermined opening degree. The damper opening of the damper device is a constant air flow value opening that is substantially intermediate between the maximum damper opening position and the minimum damper opening position in the slight fluctuation of the damper opening during the first chamber pressure control. The room pressure control method according to claim 4, which is changed to The first detection signal supplied when the change to the constant air volume value opening in the second chamber pressure control detects the opening operation of the door and the opening to the predetermined opening degree, or the door The first detection signal is supplied when detecting opening from the predetermined opening degree until it is closed, and the chamber pressure in each chamber in the second chamber pressure control is made closer to the target chamber pressure. The feedback control within the range of the adjustment range set in advance from the constant air flow value opening degree is executed by a second detection signal supplied when the movement of the door exceeding the predetermined opening degree is detected. 5. The room pressure control method according to 5. In the room pressure control method, the maximum damper opening position and the minimum damper opening position in a minute fluctuation of the damper opening during the first chamber pressure control are updated and stored in the damper device. The room pressure control method according to claim 6. The first chamber pressure control and the second chamber pressure control are executed by an application program stored in a storage device of a damper controller provided in each damper device. The room pressure control method described in 1. An air supply device including an air supply pipe connected to at least two chambers communicating with each other via an opening opened and closed by a door; an exhaust device including an exhaust pipe connected to each of the chambers; and the air supply A damper device that is attached to at least one of the device and the exhaust device, and includes a damper that adjusts the air supply or exhaust air volume for each chamber, and a damper controller that controls the movement of the damper, and an opening operation of the door; Detecting means for detecting a degree of opening and supplying a detection signal to the damper controller;
Each damper controller is configured to feedback control the damper opening of the damper device so as to maintain the air pressure in each chamber at a preset target chamber pressure when the door is closed; and When the door is opened or opened based on the detection signal supplied from the detection means, the damper opening degree of each damper device is different from the first chamber pressure control for each chamber. A second chamber pressure control means for controlling, and a small amount of the damper opening when the damper opening of the damper device is adjusted as needed to control the atmospheric pressure of each chamber to the target chamber pressure when the door is closed. A storage device for storing the maximum damper opening position and the minimum damper opening position in the fluctuation,
In the second chamber pressure control means, the damper opening of the damper device is the maximum in the slight fluctuation of the damper opening during execution of the first chamber pressure control means from the opening operation of the door to a predetermined opening degree. While the damper opening position and the minimum damper opening position are changed to a constant air volume value opening approximately in the middle, and the door exceeds the predetermined opening degree, the damper opening of the damper device is the constant air volume opening. The room pressure control device is characterized by being changed to an opening that is increased or decreased by a predetermined amount from the value opening. In each of the damper controllers, the second chamber pressure control means is executed until the door is closed from the predetermined opening degree. In the second chamber pressure control means, the door is opened to the predetermined opening degree. The damper opening of the damper device is a constant air volume approximately in the middle between the maximum damper opening position and the minimum damper opening position in the slight fluctuation of the damper opening during the first chamber pressure control. The room pressure control device according to claim 9, wherein the room pressure control device is changed to a value opening degree. A first detection signal supplied when the change to the constant air volume value opening in the second chamber pressure control means detects the opening operation of the door and the opening to the predetermined opening degree, or the door The damper opening is executed by a first detection signal that is supplied when opening is detected from the predetermined opening degree until it is closed, and is increased or decreased by a predetermined amount from the constant air amount value opening in the second chamber pressure control means. The room pressure control device according to claim 10, wherein the change to the degree is executed by a second detection signal supplied when the movement of the door exceeding the predetermined opening degree is detected. An air supply device including an air supply pipe connected to at least two chambers communicating with each other via an opening opened and closed by a door; an exhaust device including an exhaust pipe connected to each of the chambers; and the air supply A damper device that is attached to at least one of the device and the exhaust device, and includes a damper that adjusts the air supply or exhaust air volume for each chamber, and a damper controller that controls the movement of the damper, and an opening operation of the door; Detecting means for detecting a degree of opening and supplying a detection signal to the damper controller;
Each damper controller is configured to feedback control the damper opening of the damper device so as to maintain the air pressure in each chamber at a preset target chamber pressure when the door is closed; and When the door is opened or opened based on the detection signal supplied from the detection means, the damper opening degree of each damper device is different from the first chamber pressure control for each chamber. A second chamber pressure control means for controlling, and a small amount of the damper opening when the damper opening of the damper device is adjusted as needed to control the atmospheric pressure of each chamber to the target chamber pressure when the door is closed. A storage device for storing the maximum damper opening position and the minimum damper opening position in the fluctuation,
In the second chamber pressure control means, the damper opening of the damper device is the maximum in the slight fluctuation of the damper opening during execution of the first chamber pressure control means from the opening operation of the door to a predetermined opening degree. While the damper opening position and the minimum damper opening position are changed to a substantially constant air volume value opening degree, and while the door exceeds the predetermined opening degree, the damper opening degree of the damper device is set to each chamber. The chamber pressure control device is characterized in that feedback control is performed so that the chamber pressure approaches the target chamber pressure within a preset adjustment range from the constant air volume value opening degree. In each of the damper controllers, the second chamber pressure control means is executed until the door is closed from the predetermined opening degree. In the second chamber pressure control means, the door is opened to the predetermined opening degree. The damper opening of the damper device is a constant air volume approximately in the middle between the maximum damper opening position and the minimum damper opening position in the slight fluctuation of the damper opening during the first chamber pressure control. The room pressure control device according to claim 12, wherein the room pressure control device is changed to a value opening degree. A first detection signal supplied when the change to the constant air volume value opening in the second chamber pressure control means detects the opening operation of the door and the opening to the predetermined opening degree, or the door Is executed by a first detection signal that is supplied when opening is detected from the predetermined degree of opening until it is closed, so that the chamber pressure in each chamber in the second chamber pressure control approaches the target chamber pressure. Feedback control within a range of adjustment range set in advance from the constant air volume value opening is executed by a second detection signal supplied when the movement of the door exceeding the predetermined opening degree is detected. Item 14. The room pressure control device according to Item 13. In the chamber pressure control device, the maximum damper opening position and the minimum damper opening position in the slight fluctuation of the damper opening during execution of the first chamber pressure control means are updated and stored in the storage device of the damper device. The room pressure control device according to any one of claims 9 to 14.

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