JP3720170B2 - Ventilation method and ventilation device for air shower room - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for ventilating an air shower room disposed adjacent to a sterile room.
[0002]
[Prior art]
The air shower room is maintained in a sterile state by performing formalin fumigation or the like at regular intervals as in the sterile room. After formalin fumigation, the air shower room is well ventilated until entering the room to exhaust the formalin odor. However, since the air shower room is always closed, the formalin odor is trapped inside. For this reason, when passing through an air shower room in order to enter the aseptic room, the formalin odor is strong, making the worker extremely unpleasant. The air shower room has a very high airtightness and cannot be ventilated in a normal state, and the internal state deteriorates with time, so that there is a disadvantage that it cannot pass comfortably.
[0003]
[Problems to be solved by the invention]
In order to eliminate this drawback, a method of neutralizing formalin odor with aqueous ammonia has been developed. However, the method of using ammonia water is to prepare sterile ammonia water, and furthermore, the method of use for efficiently contacting the air in the air shower room with this is cumbersome and time-consuming, and the formalin odor is easily removed. There was a drawback that could not be done.
[0004]
The present invention has been developed for the purpose of solving such drawbacks. An important object of the present invention is an air shower that has a very simple structure, maintains the air shower chamber in a sterile condition, and efficiently removes malodorous chemicals used for sterilization in a short time and can be used comfortably. It is in providing the ventilation method and ventilation apparatus of a room.
[0005]
[Means for Solving the Problems]
Ventilation method of the air shower of the present invention, the suction filter 6 via sucks air in the sterile chamber 2 and a ventilator for removing the ventilator and foreign matter sterile air shower 1, further The air shower chamber 1 is evacuated to the sterilization chamber 2 through the discharge filter 7 to ventilate the air shower chamber 1 into the sterilization chamber 2.
[0006]
Further, the ventilator for the air shower room according to the present invention sucks the air in the air shower room 1 and injects it into the air shower room 1, the suction side of the circulation fan 3, and a sterile ventilator. And a suction filter 6 connected between the sterilization chamber 2 provided with a ventilation device for removing foreign matter, and a discharge filter 7 connected between the discharge side of the circulation fan 3 and the sterilization chamber 2. .
[0007]
When the circulation fan 3 is operated, the air in the sterilization chamber 2 is sucked together with the air in the air shower chamber 1 through the suction filter 6, and a part of the air injected into the air shower chamber 1 is By being branched and discharged to the sterilization chamber 2, the air in the sterilization chamber 2 is ventilated to the air shower chamber 1 by the circulation fan 3. The circulation fan 3 is operated intermittently by a timer other than when a person passes to promote ventilation.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. However, the embodiment shown below exemplifies the ventilation method and ventilation device of the air shower room for embodying the technical idea of the present invention, and the present invention provides the ventilation method and ventilation device of the air shower room. Not specified below.
[0009]
Further, in this specification, in order to facilitate understanding of the scope of claims, the numbers corresponding to the members shown in the embodiments are referred to as “claims” and “means for solving the problems”. It is added to the member shown by. However, the members shown in the claims are not limited to the members in the embodiments.
[0010]
Prior to detailed description of embodiments of the present invention, a conventional air shower room and a sterile room will be described to clarify the difference from the ventilator of the present invention. FIG. 1 is a cross-sectional view showing a conventional air shower chamber 1 and a sterilization chamber 2. In the air shower chamber 1 shown in this figure, the suction side and the discharge side of the circulation fan 3 are connected to the air shower chamber 1. A pre-filter 4 is connected to the suction side of the circulation fan 3, and a circulation filter 5 is connected to the discharge side. When the circulation fan 3 is operated, the air in the air shower chamber 1 passes through the pre-filter 4, the circulation fan 3, and the circulation filter 5, is circulated, and is supplied to the workers who enter the air shower chamber 1 at a high speed. Spray to remove adhering dust.
[0011]
When the air shower room 1 shown in this figure is sterilized with formalin or the like together with the sterilization room 2, the bad odor cannot be quickly exhausted. FIG. 2 shows a ventilator according to an embodiment of the present invention that quickly exhausts the formalin odor.
[0012]
In the ventilation device of this figure, the suction side of the circulation fan 3 is connected to the sterilization chamber 2 via a suction filter 6. The discharge side of the circulation fan 3 is connected to the circulation filter 5. The discharge side of the circulation filter 5 is branched, and one is connected to the air shower chamber 1 and the other is connected to the sterilization chamber 2 via the discharge filter 7. are doing. Further, the circulation fan 3 is connected to the air shower chamber 1 via a prefilter 4 on the suction side.
[0013]
In the apparatus shown in FIGS. 3 to 6, the sterilization chamber 2 is provided adjacent to the air shower chamber 1, and the circulation chamber 8 provided adjacent to the air shower chamber 1 is adjacent to the sterilization chamber 2. A door 9 that can be opened and closed is provided between the air shower chamber 1 and the sterilization chamber 2. The operator opens the door 9 and enters the sterilization chamber 2 from the air shower chamber 1. The air shower room 1 is provided with a changing room 10 on the opposite side of the aseptic room 2, and a door 11 is also provided between the changing room 10 and the air shower room 1. An operator changes clothes in the changing room 10, enters the air shower room 1, and enters the sterilization room 2 from the air shower room 1.
[0014]
The circulation chamber 8 contains a prefilter 4, a circulation fan 3, a circulation filter 5, a suction filter 6, and a discharge filter 7. The circulation chamber 8 includes a first chamber 8A provided at a lower portion for sucking air from the air shower chamber 1 and the sterilization chamber 2, a second chamber 8B from which the circulation fan 3 sucks and blows out air in the first chamber 8A, The second chamber 8B is partitioned into a third chamber 8C connected via the circulation filter 5. The first chamber 8A is provided in the lower part of the circulation chamber 8, the third chamber 8C is provided in the upper part, and the second chamber 8B is provided in the middle.
[0015]
The first chamber 8 </ b> A is connected to the air shower chamber 1 through the pre-filter 4 and is connected to the sterilization chamber 2 through the suction filter 6. The first chamber 8 </ b> A is connected to the suction side of the circulation fan 3, and air is forcibly sucked from the air shower chamber 1 and the sterilization chamber 2 by the circulation fan 3. As shown in FIGS. 4 and 5, the prefilter 4 is provided in the lower part of the air shower chamber 1. The suction filter 6 is also connected to the lower part of the sterilization chamber 2 as shown in FIG.
[0016]
The second chamber 8B is connected to the blowing side of the circulation fan 3, and the circulation filter 5 is disposed between the second chamber 8B and the third chamber 8C. The third chamber 8C is connected to the air shower chamber 1 through a plurality of jet nozzles 12, and is connected to the sterilization chamber 2 through a discharge filter 7. The jet nozzle 12 ejects air forcedly blown by the circulation fan 3 to the operator of the air shower chamber 1 to remove adhering foreign matter. As shown in FIG. 6, the discharge filter 7 is disposed above the boundary between the air shower chamber 1 and the sterilization chamber 2, and supplies the air in the third chamber 8 </ b> C to the sterilization chamber 2.
[0017]
The prefilter 4 removes large foreign matters contained in the air sucked from the air shower chamber 1. As the pre-filter 4, for example, a filter that can remove foreign matters of 2 to 3 μm or more is used.
[0018]
As the circulation filter 5, the suction filter 6, and the discharge filter 7, for example, a filter that removes extremely fine foreign matters of 0.3 μm or less is used. These filters are formalin fumigated at the same time as the sterile room and can always be kept sterile.
[0019]
The air shower chamber 1 and the sterilization chamber 2 having this structure ventilate the air shower chamber 1 by the following operation.
(1) After sterilizing the air shower room 1 and the sterile room 2 by formalin fumigation, the sterile room 2 is ventilated to remove the formalin odor. The sterilization chamber 2 is provided with an aseptic ventilation device (not shown) and a ventilation device for removing foreign substances because an operator enters and works.
[0020]
(2) The circulation fan 3 is operated with the door of the air shower chamber 1 closed and sealed. The circulation fan 3 sucks air from both the air shower chamber 1 and the sterilization chamber 2 into the first chamber 8A. This is because the pressure in the first chamber 8A connected to the suction side of the circulation fan 3 is lower than that in the air shower chamber 1 and the sterilization chamber 2.
[0021]
(3) The air sucked into the first chamber 8A passes through the circulation fan 3 and is blown out into the second chamber 8B. Air is blown to increase the pressure in the second chamber 8B, and the air in the second chamber 8B passes through the circulation filter 5 and flows into the third chamber 8C.
[0022]
(4) The third chamber 8C is also supplied with air to increase the internal pressure, passes through the jet nozzle 12 to the air shower chamber 1, and passes through the discharge filter 7 to be supplied to the sterilization chamber 2.
[0023]
In this state, the air in the air shower room 1 is ventilated in the aseptic room 2, and malodor such as formalin odor is exhausted.
[0024]
In the above embodiment, the suction side of the circulation fan 3 is connected to the sterilization chamber 2 via the suction filter 6, and the discharge side is connected to the sterilization chamber 2 via the discharge filter 7. In this structure, the air in the sterile chamber 2 is circulated through the suction filter 6, the circulation filter 5, and the discharge filter 7. Therefore, there is a feature that the air in the sterilization chamber 2 can be maintained most clearly. However, a suction filter can be connected to the suction side of the circulation fan, and the discharge side can be connected to the sterilization chamber without being connected to the discharge filter. Further, the discharge side of the circulation fan can be connected to the sterilization chamber via a discharge filter, and the suction side can be connected to the sterilization chamber without passing through the suction filter.
[0025]
Further, the method and apparatus for circulating the air in the air shower chamber 1 to the sterilization chamber 2 with the circulation fan 3 for circulating the air in the air shower chamber 1 circulates the air between the air shower chamber 1 and the sterilization chamber 2. A dedicated circulation fan 3 is not required. For this reason, there exists the feature which can circulate the air of the air shower chamber 1 to the aseptic chamber 2 with the simplest structure. However, the air shower room ventilation method and ventilation apparatus of the present invention can circulate the air in the air shower room to the aseptic room with a dedicated circulation fan.
[0026]
As shown in FIG. 7, the method and apparatus using the dedicated circulation fan connect the suction side of the dedicated circulation fan 13 to the aseptic chamber 2 through the suction filter 6. The dedicated circulation fan 13 opens on the discharge side to the air shower chamber 1, and connects the air shower chamber 1 and the sterilization chamber 2 via the discharge filter 7. In the air shower chamber 1 having this structure, when the dedicated circulation fan 13 is operated, the air in the sterile chamber 2 passes through the suction filter 6 and is sucked into the air shower chamber 1. Since the internal pressure of the air shower chamber 1 is increased by the sucked air, the air is supplied from the air shower chamber 1 to the sterilization chamber 2 through the discharge filter 7. Therefore, the air shower room 1 can ventilate the air in the sterile room 2 to the air shower room 1 with the dedicated circulation fan 13.
[0027]
【The invention's effect】
The air shower chamber ventilation method and apparatus of the present invention has an extremely simple structure, maintains the air shower chamber in a sterile state, and efficiently removes the odors of chemicals used for sterilization in a short time, and is aseptic. There is a feature that can be used comfortably. This is because the air shower room ventilation method and ventilator of the present invention ventilate the air in the aseptic room, rather than ventilating the air in the air shower room to the outside. An air shower room that circulates air into a sterile room has a feature that it can efficiently remove malodors such as formalin odor from the upper and lower surfaces in combination with a ventilator that keeps the sterile room in a sterile state. For this reason, the air shower room ventilation method and ventilator of the present invention require a device for ventilating the air shower room in an aseptic condition, although it can quickly remove malodors such as formalin odor from the air shower room. Therefore, the facility cost can be significantly reduced and the features that can be used comfortably are realized.
[0028]
In addition, a device that uses a circulation fan that circulates air in the air shower chamber for spraying from the jet nozzle to circulate air between the air shower chamber and the sterilization chamber has a simpler structure, and the air in the air shower chamber is circulated. It has the feature that it can be ventilated in a sterile room.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view showing a conventional ventilation device for an air shower chamber. FIG. 2 is a schematic cross-sectional view showing a ventilation device for an air shower chamber according to an embodiment of the present invention. FIG. 4 is a sectional view taken along the line AA of the ventilator of the air shower room shown in FIG. 3. FIG. 5 is a sectional view taken along the line BB of the ventilator of the air shower room shown in FIG. FIG. 6 is a cross-sectional view taken along line CC of the ventilator of the air shower chamber shown in FIG. 3. FIG. 7 is a schematic cross-sectional view showing the ventilator of the air shower chamber according to another embodiment of the present invention. ]
DESCRIPTION OF SYMBOLS 1 ... Air shower room 2 ... Aseptic room 3 ... Circulation fan 4 ... Pre filter 5 ... Circulation filter 6 ... Intake filter 7 ... Discharge filter 8 ... Circulation room 8A ... 1st chamber 8B ... 2nd chamber
8C ... 3rd chamber 9 ... Door 10 ... Changing room 11 ... Door 12 ... Jet nozzle 13 ... Dedicated circulation fan

Claims (4)

Via the suction filter (6), the air in the sterile room (2) equipped with a sterile ventilation device and a ventilation device for removing foreign substances is sucked into the air shower chamber (1) and the discharge filter (7) is The air shower room (1) is exhausted to the sterile room (2) to ventilate the air shower room (1).   A circulation fan (3) that circulates the air in the air shower chamber (1) from the jet nozzle (12) to the air shower chamber (1) and circulates the air in the air shower chamber (1) to the sterilization chamber (2) The ventilation method of the air shower room of Claim 1 used together with the fan to make. A circulation fan (3) that draws air in the air shower chamber (1) and injects it into the air shower chamber (1), a suction side of the circulation fan (3), a sterile ventilation device, and ventilation that removes foreign matter A suction filter (6) connected between a sterilization chamber (2) equipped with a device, and a discharge filter connected between the discharge side of the circulation fan (3) and the sterilization chamber (2) ( 7) and equipped with a,
When the circulation fan (3) is operated, the air in the sterilization chamber (2) is sucked together with the air in the air shower chamber (1) through the suction filter (6), and the air shower chamber (1) A part of the air injected into the air is branched into the aseptic chamber (2) through the discharge filter (7) and discharged , so that the air in the aseptic chamber (2) is aired by the circulation fan (3). A ventilation device for an air shower room configured to be ventilated in the shower room (1). A circulation fan (3) that circulates the air in the air shower chamber (1) from the jet nozzle (12) to the air shower chamber (1) and circulates the air in the air shower chamber (1) to the sterilization chamber (2) The ventilator for an air shower room according to claim 3, which is used in combination with a fan to be operated.

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