JPS6328621B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shower device used when entering a facility that requires a clean atmosphere (hereinafter referred to as a clean room).

Clean rooms are used in hospital operating rooms, sterile animal rooms, microbial culture rooms, biohazard facilities in research institutions,
Alternatively, it is used in facilities where pathogens and dust are averse, such as semiconductor manufacturing factories. In a clean room, sterile and dust-free clean air is usually circulated to maintain the cleanliness of the room at a predetermined level. Pathogens and dust emitted from the body surfaces and clothes of persons entering the room are removed in advance using a shower device before entering the room. As the shower device, an air shower device that sprays clean air is generally employed. In clean rooms where cleanliness is strictly required, water shower means for spraying clean water is used in addition to air shower means.

The above-mentioned shower device equipped with a water shower means and an air shower means has a spray nozzle for the water shower and a spray nozzle for the air shower in a shower chamber that has an entrance and exit and is isolated from the outside when in use. These shower means are installed in the necessary locations, and these shower means are used in appropriate combinations. However, this device has a drawback that water droplets tend to drip from the spray nozzle after using the water shower, which becomes an obstacle when performing the air shower.
Furthermore, since the tip of the water spray nozzle is always moist, bacteria and mold can grow in this area, reducing the effectiveness of the water shower.

The present invention solves the above-mentioned drawbacks of the prior art, and provides a shower device for clean rooms in which water droplets do not drip from the spray nozzle even after using a water shower, and bacteria and gases do not breed at the tip of the spray nozzle. Our goal is to provide the following.

In order to achieve the above object, the shower device for a clean room according to the present invention includes a water shower means equipped with a nozzle for spraying clean water, and a nozzle of the water shower means that is used in common to supply clean air from the nozzle. It is characterized by comprising an air shower means for spraying, and an operating means for automatically operating the air shower means when the water shower means is activated.

Embodiments of the present invention will be described below based on the drawings.
FIG. 1 is a plan view showing the overall configuration of a clean room to which the present invention is applied. In the figure, a dressing room 12, a shower room 14, and a dressing room 16 are arranged adjacent to a clean room 10. Each of these rooms has door 1
8, 20, 22, 24 provide access to adjacent chambers. Spray nozzles 26 and 28 are provided in the shower chamber 14 to face the room. A person entering the clean room 10 first enters the changing room 12 from arrow A, takes a shower in the shower room 14 after undressing, and puts on clothes that have been treated to be sterile or dust-free in the changing room 16. Thereafter, the user enters the clean room 10 through the door 24 (arrow B). When exiting the clean room 10, exit in the reverse order to the above,
The user may simply pass through the changing room 16 and the shower room 14 and change clothes in the undressing room 12. In the above configuration, in the prior art, spray nozzles for a water shower and an air shower are provided separately. For example, the spray nozzle 26 is for a water shower,
The spray nozzle 28 was intended for an air shower.
In the present invention, these spray nozzles are commonly used for water showers and air showers without distinction.

That is, as shown in FIG.
The spray nozzle 30 provided at 4 communicates with both a water pipe 32 that supplies clean water and an air pipe 34 that supplies clean air. This pipe line 32,3
By switching the opening and closing of the control valves 36, 38, and 40 provided in the spray nozzle 30, either clean water or clean air can be sprayed from the spray nozzle 30. Switching operations of these control valves 36, 38, and 40 are automatically performed by output signals from the controller 42. First, a signal indicating that a person entering the clean room enters the shower room 14 and the door 20 is closed is input to the controller 42 by the detector 44 provided on the door 20 . As a result, the controller 42 outputs a signal to open only the control valve 32, and clean water from the water pipe 32 is sprayed from the spray nozzle 30. When showering with clean water is performed for a predetermined period of time according to the settings of a timer built into the controller 42, a control valve switching command is then output, and only the control valve 38 is opened. Therefore, clean air from the air pipe line 34 is transferred to the shared pipe line 4.
After extruding the clean water present in 6, it is sprayed from the spray nozzle 30. The clean air that is blown out allows the person entering the room to dry off the wetness caused by the water shower without using a towel or the like. After the air shower continues for a predetermined period of time, a control valve switching command is output, and only the control valve 40 is opened.
This control valve 40 has the same function as the control valve 38 in that it causes clean air from the air pipe line 34 to be discharged from the spray nozzle 30, but it has significance in that it restricts the flow rate of the clean air. That is, the amount of clean air discharged from the spray nozzle via the control valve 40 is set to a level that maintains the inside of the shower chamber 14 at a slight positive pressure. As a result of maintaining the positive pressure in the shower chamber 14, even at night when the shower chamber 14 is not used, entry of outside air containing many germs and dust is prevented, and the cleanliness inside the shower chamber is maintained.

Moreover, since the humidity in the room caused by the water shower is removed by the circulation of this clean air, the humidity in the room can be maintained at a predetermined value or less. Therefore, it is possible to prevent bacteria and mold from growing inside the shower room.

The present invention is not limited to the manner of use described in the above embodiments, but may be such that first an air shower is performed, then a water shower is performed, and then an air shower is performed. Further, the air shower may include an air shower of a separate system that injects only clean air, in addition to the air shower shared with the nozzle of the water shower, so as to shorten the drying time by the air shower. The clean air introduced into the air shower is heated appropriately to speed up the drying process.
Preferably, it is dehumidified. Further, the clean air released from the nozzle via the control valve 40 is mixed with disinfecting gas for a certain period of time when not in use, such as at night, to prevent fungi from growing on the inner walls, floor, etc. of the shower room 14. You can do it like this. Said first
It is preferable that the indoor pressures of the dressing room 12, the shower room 14, the dressing room 16, and the clean room 10 shown in the figure are maintained and controlled on the positive pressure side with a slight differential pressure in the listed order. By maintaining the pressure within each chamber in this manner, the clean chamber 10 is always maintained at the highest positive pressure side. Therefore, when entering and exiting adjacent rooms, there is a clean room 10, a changing room 16, and a shower room 1.
4. Indoor air flows in the order of the changing room 12, and it is possible to reliably prevent contaminated air from flowing into the clean room 10.

As described above, in the present invention, the spray nozzle for the water shower and the air shower is shared, and when the water shower is performed, the air shower is automatically operated, so that the shared pipe No clean water remains in the spray nozzle 46 or the spray nozzle 30. Therefore, no water droplets drip from the spray nozzle 30. Moreover, since the tip of the spray nozzle 30 is dried by the air shower means after the water shower is completed, various bacteria and molds do not grow therein.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the overall configuration of a clean room to which the present invention is applied, and FIG. 2 is a system diagram showing an apparatus according to an embodiment of the present invention. 10...Clean room, 12...Dressing room, 14...Shower room, 16...Dressing room, 30...Spray nozzle, 32...Water pipe, 34...Air pipe, 36, 38, 40...Control valve, 42...Controller, 44 ...detector, 46...
Shared conduit.

Claims (1)

[Scope of Claims] 1. A water shower means equipped with a nozzle that sprays clean water, an air shower means that shares the nozzle of the water shower means and sprays clean air from the nozzle, and the water shower means is operated. and operating means for automatically operating the air shower means when the air shower is performed. 2. According to claim 1, the air shower means is switchable by a control valve between a system that sprays a large amount of clean air and a system that sprays a small amount of clean air. Shower device for clean rooms as described.