JP4601767B2 - Air shower equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is an air shower device that is installed between a clean room and an anterior room in a clean room for a semiconductor, a hospital operating room, a food or bio facility, etc., and cleans articles such as occupants and products with jet air. About.
[0002]
[Prior art]
In a conventional air shower apparatus, when a person opens a front room side door and enters the air shower room into a clean room room (CR room), a sensor detects this room entry state and locks the door on the CR room side. Then, the fan is activated and jet air is blown out from the jet nozzle for a certain period of time, after which the door on the CR chamber side is unlocked and a person can enter the CR chamber. In a conventional air shower device, such a series of operations is controlled by a relay system.
Recently, an integrated circuit system has begun to be used in place of the relay system from the viewpoint of improving the appearance of products and reducing costs. However, when an integrated circuit is used, a malfunction may occur due to the influence of an electromagnetic wave or the like. If malfunction occurs, a problem that a person entering the room is confined in the room is also expected.
In addition, when controlling the operation using only the door opening / closing signal, repeated malfunctions afterwards due to an operation pattern different from the normal action pattern, such as "The door on the front room side was opened and closed, but the room did not enter the air shower." The problem that it ends up is expected.
[0003]
[Problems to be solved by the invention]
As a method for avoiding the above problem, there is a method for initializing the state of the integrated circuit. However, the initialization means had to turn off the main power. And since the main power supply is usually disposed inside the side air blower, and the occupant removes the side wall from the room side and turns off the main power supply, the operation for returning is troublesome.
[0004]
Therefore, an object of the present invention is to provide an air shower device that can be avoided automatically or manually when a malfunction occurs or when a malfunction may occur.
[0005]
[Means for Solving the Problems]
An air shower apparatus according to a first aspect of the present invention includes a fan for blowing jet air, a first door provided on the front chamber side, a second door provided on the clean room side, and operation of the fan. Control means for detecting and controlling the stop, the first door, and the door lock of the second door by detecting the open / closed state of the first door or the second door, and the first door Alternatively, a reset function is provided for resetting the control state of the control means when the open / closed state of the second door is not detected for a predetermined time.
Air shower apparatus of the present invention according to claim 2, characterized in that a reset switch for resetting the control state before Symbol control unit on the operation panel.
A control method for an air shower apparatus according to a third aspect of the present invention includes a fan for blowing jet air, a first door provided on the front chamber side, and a second door provided on the clean room side. The control method of the air shower apparatus which controls the operation stop of the fan, the door lock of the first door, and the second door by detecting the open / closed state of the first door or the second door A first step of detecting an open / closed state of the first door and locking the second door when the first door is in an open state; and an open state of the first door. And a second step of starting the operation of the fan after detecting the closed state and locking the first door and the second door, and after a predetermined time has elapsed since the start of the operation of the fan. A third step of stopping operation of the fan, and the fan A fourth step of detecting an open / closed state of the second door after the operation is stopped and locking the first door when the second door is in an open state; The control state is reset to the state before the first step when the open / close state of the second door is not detected within a predetermined time.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The air shower device according to the embodiment of the present invention is provided with a reset function for resetting the control state of the control means when the open / close state of the first door or the second door is not continuously detected for a predetermined time. This is a feature, and even if an irregular operation is performed, it is possible to prevent a malfunction from continuing thereafter.
[0007]
In addition, the air shower apparatus according to the embodiment of the present invention is characterized in that a reset switch for resetting the control state of the control means is provided on the operation panel. For example, when an erroneous operation occurs due to the influence of electromagnetic waves. However, it can be reset artificially, and inconveniences such as being trapped in the shower room can be avoided.
[0008]
Moreover, the control method of the air shower apparatus by embodiment of this invention detects the opening / closing state of a 1st door, and when the 1st door is an open state, the 1st step which door-locks a 2nd door And the second step of starting the operation of the fan after detecting the open state and the closed state of the first door and locking the first door and the second door, and starting the operation of the fan. A third step of stopping the operation of the fan after a lapse of a predetermined time, and detecting the open / closed state of the second door after the operation of the fan is stopped and locking the first door when the second door is open And a control step is reset to a state before the first step when the opening / closing state of the second door is not detected within a predetermined time in the fourth step. If an irregular operation is performed, , It is possible to prevent the subsequent malfunction is continued.
[0009]
【Example】
Hereinafter, an air shower according to an embodiment of the present invention will be described with reference to the drawings.
1 is a perspective view of an air shower device according to the present embodiment, FIG. 2 is a view taken along the line AA of FIG. 1, FIG. 3 is a front view of a seat switch used in the device, and FIG. 4 is a flowchart showing the operation of the device. FIG. 5 and FIG. 5 are block diagrams showing the apparatus as function realizing means.
As shown in FIGS. 1 and 2, a passage 2 through which a human body or an object passes is provided in the shower room 1. The shower room 1 is provided with doors 2a and 2b on the front room side and the CR side, respectively. A side air blower 3a and a side wall 3b are installed on the side of the passage 2, the side air blower 3a is provided with a plurality of side jet air flow outlets 4a, and a return air inlet 5 is provided at the bottom. It has been. Although not shown, for example, a fan such as a jet fan, a filter, a pressure chamber, and the like are provided inside the side air blower 3a. An electromagnetic lock 6 that locks the door 2a and the door 2b is provided inside the side air blower 3a. A panel 7 is provided above the side air blower 3a, and a control panel 8 comprising a sheet switch is provided on the panel 7. A breaker 9 is installed inside the side air blower 3a from which the panel 7 is removed. A ceiling unit 10 is provided on the ceiling of the passage 2, and both ends of the ceiling unit 10 are connected to the side air blower 3 a and the side wall 3 b. Further, a floor unit 11 is provided in the passage 2, and both ends of the floor unit 11 are connected to the side air blower 3 a and the side wall 3 b.
[0010]
Next, the control panel 8 will be described with reference to FIG.
The control panel 8 includes a switch 8a for switching the operation of the fan between manual and automatic, a switch 8b for stopping the operation of the circulation fan for circulating the air in the shower room 1, and a switch 8c for turning on and off the lighting in the shower room 1. The display unit 8d for displaying the operation time of the fan that blows out air from the side jet air flow outlet 4a, the switch 8e for changing the operation time of the fan, the operation of the electromagnetic lock 6 and the fan are stopped, and the control state is changed. And a reset switch 8f for returning to the initial setting.
[0011]
Next, the operation of the air shower apparatus according to the present embodiment will be described with reference to FIGS.
First, when the operator opens the door 2a and enters the shower room 1 in the initial state (S1), the first door open / close detection means 21 detects the open / closed state of the door 2a (S2). When it is detected by the first door opening / closing detection means 21 that the door 2a is open, the electromagnetic lock 6 is operated by the control means 23 to lock the CR side door 2b (S3).
Next, when it is detected by the first door opening / closing detection means 21 that the door 2a is closed (S4), the operation of the fan 24 is started by the control means 23, and air is blown out from the side jet air flow outlet 4a. (S5). At this time, the remaining operation time of the fan 24 is displayed on the display unit 8d. The operation time of the fan 24 can be changed by the switch 8e. When the operation of the fan 24 is started (S5), the electromagnetic lock 6 is operated by the control means 23 to lock the door 2a and the door 2b (S6). When the operation of the fan 24 is started (S5), the operation time is measured by the timer means in the control means 23, and it is determined whether or not the set time has been reached (S7). When the set time has elapsed, the operation of the fan 24 is stopped (S8). At this time, the operation of the fan 24 is stopped and the door locks of the doors 2a and 2b are released. After the operation of the fan 24 is stopped, the open / closed state of the door 2b is detected by the second door open / close detection means 22 (S9). When it is detected by the second door opening / closing detection means 22 that the door 2b is opened, the electromagnetic lock 6 is operated by the control means 23 to lock the door 2a (S10). While the door 2b is open, the door 2a is door-locked. Then, the open / closed state of the door 2b is detected by the second door open / close detecting means 22 (S11), and when the door 2b is closed, the door lock of the door 2a is released (S12). By releasing the door lock of the door 2a (S12), the control state of the control means 23 is returned to the initial state (S1).
When the second door opening / closing detection means 22 cannot detect that the door 2b has been opened in the above step 9, the first door opening / closing detection means 21 detects the opening / closing state of the door 2a (S13), and the door 2a Is detected, the door 2b is locked (S14). Then, the opening / closing state of the door 2a is detected by the first door opening / closing detection means 21 (S15), and when the door 2a is detected to be closed, the door lock of the door 2b is released (S16). The door 2b is returned to the initial state by releasing the door lock (S16) (S1).
In the above step 13, when the first door opening / closing detection means 21 cannot detect that the door 2a has been opened, it is determined whether or not a predetermined time (for example, 1 minute) has elapsed since the stop of the fan operation (S8). (S17) When the predetermined time has elapsed, the control state of the control means 23 is returned to the initial state (S1). Thus, the control means 23 is provided with a reset function for resetting the control state and returning it to the initial state (S1).
[0012]
As described above, according to this embodiment, when there is no opening / closing operation of the door 2a and the door 2b for 1 minute after the operation of the fan is completed, the malfunction can be avoided by automatically resetting to the initial state.
That is, conventionally, when the operator does not enter the shower room 1 even when the door 2a is opened and closed, the waiting state for the next scheduled operation is maintained when the operation of the fan is completed. In this state, when an operator enters the shower room 1 from the door 2b, it is determined that the operator who has taken the jet opens the door 2b and passes through the CR room for the control of the shower room 1. To return to the initial state. Furthermore, when a person entering the room from the CR room side opens and closes the door 2a and passes through the front room, the shower room 1 determines that “there is a newer room than the front room” and starts the fan operation without being attended. . As described above, in the related art, there is a possibility that malfunctions may continue endlessly due to one irregular operation, but according to the present embodiment, such inconvenience can be effectively prevented.
[0013]
In this embodiment, the door 2a and the door 2b are reset to the initial state when there is no opening / closing operation, but the door 2a or the door 2b may be reset to the initial state when there is no door opening / closing operation. Good.
In this embodiment, the control can be returned to the initial state and the electromagnetic lock 6 can be released by simply pressing the reset switch 8f of the control panel 8 without removing the panel 7 and shutting off the breaker 9.
Therefore, if a person enters the shower room 1 and a malfunction occurs in the control when the electromagnetic lock 6 is activated with respect to the doors 2a and 2b, and the electromagnetic lock 6 continues to operate even after the fan stops, The person can easily cope with the case where the person is trapped in the shower room 1.
[0014]
【The invention's effect】
As is apparent from the above description, according to the present invention, even if an irregular operation is performed, it is possible to prevent a malfunction from being continued thereafter.
Further, according to the present invention, for example, even if a malfunction occurs due to the influence of electromagnetic waves, it can be reset artificially, and inconveniences such as being trapped in the shower room can be avoided.
[Brief description of the drawings]
FIG. 1 is a perspective view of an air shower device according to an embodiment of the present invention. FIG. 2 is a view taken along the line AA in FIG. 1. FIG. 3 is a front view of a seat switch used in the device. Flowchart showing the operation [FIG. 5] Block diagram showing the apparatus as a function realization means [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Shower room 2a Door 2b Door 8 Control panel 8f Reset switch 21 1st door opening / closing detection means 22 2nd door opening / closing detection means 23 Control means 24 Fan

Claims (3)

  A fan for blowing jet air; a first door provided on the front chamber side; a second door provided on the clean chamber side; the operation stop of the fan; the first door; and the second door Control means for detecting the door open / close state of the first door or the second door and controlling the door lock, and the open / close state of the first door or the second door continues for a predetermined time. An air shower device provided with a reset function for resetting the control state of the control means when it is not detected. Air shower apparatus according to claim 1, characterized in that a reset switch for resetting the control state before Symbol control unit on the operation panel.   A fan for blowing out jet air; a first door provided on the front chamber side; and a second door provided on the clean room side, the operation stop of the fan, the first door, and the first door 2 is a control method of an air shower device for detecting the open / closed state of the first door or the second door, and detecting the open / closed state of the first door. When the first door is in the open state, the first step of door-locking the second door, and the operation of the fan is started after detecting the open state and the closed state of the first door. A second step of door-locking the first door and the second door; a third step of stopping the fan operation after a predetermined time has elapsed since the start of operation of the fan; and operation of the fan After the stop, the open / close state of the second door is detected and the second door A fourth step of locking the first door when the door is in an open state, and the opening / closing state of the second door is not detected within a predetermined time in the fourth step. A control method for an air shower device, wherein the control state is reset to the state before the first step.

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