JPH0228350Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to the structure of an air shower room in a clean room.

An air shower room is installed at the entrance to the clean room to prevent dust from being brought in by people entering and leaving the room. Air showers are used to remove dust by blowing clean air onto the human body and clothes.

Conventional relief dampers are generally installed directly on the partition wall between the clean room and the outside.
The clean air discharged to maintain the set pressure difference is not used to clean the clean room, and the amount cannot be called a small amount depending on the set pressure in the clean room and the set operating pressure of the relief damper. This cannot be ignored from the point of view of effective energy use. In addition, the structure of the air shower room is such that air is simply circulated between the air shower room and a high-performance filter using a blower, so when a large number of people pass by in a short period of time, such as at the start or end of work, the blown air is Odors accumulated significantly, and users continued to complain.

In view of the above, the present invention provides an air shower room having a structure that reduces the concentration of dust and odor in the air shower room by guiding the clean air discharged outside from the relief damper to the air shower room in order to pressurize the clean room. The purpose is to

The present invention provides a relief damper 9 on the outer wall of the clean room 1 between the lower part of the ceiling filter 2 of the clean room 1 and the upper part of the air shower room 8, and connects the relief damper 9 and the upper part of the air shower room 8 to the air supply duct 4. and an exhaust duct 5 at the bottom facing the outside of the air shower chamber 8.
The clean air in the clean room 1 is guided to the upper part of the air shower chamber 8 through the relief damper 9 and the air supply duct 4, and the surplus air in the air shower chamber 8 is transferred to the air shower chamber by utilizing the pressure difference between the clean room 1 and the air shower chamber 8. This is the structure of an air shower room in a clean room, which is characterized in that the air is discharged to the outside through an exhaust duct 5 installed at the bottom of the clean room 1. Clean air is guided to the air shower chamber 8 via the relief damper 9 by the air supply duct 4 at the top of the air shower chamber 8, and dirty air from the air shower chamber 8 is guided to the exhaust duct 5 provided at the bottom facing the outside of the air shower chamber 8. This system prevents the accumulation of odors and removes dust and odors by expelling the air to the outside and replacing it with clean air.

An embodiment of the present invention will be described below in detail with reference to the drawings (FIG. 2). Clean air supplied to a clean room 1 is sent into the room through a filter 2 on the ceiling. Of the clean air that has passed through the filter 2, that which is discharged outside from the relief damper 9 during pressure adjustment is taken into the air shower chamber 8 from the upper part of the air shower chamber 8 through the air supply duct 4 or the like. This clean air enters under the floor through the gap in the floor grating 7, passes through the filter 2 by the blower 3, and is blown out from each outlet 6,...6 into the air shower room 8, removing dust adhering to the clothes of people passing through. In addition, as the air enters under the floor and circulates, clean air comes in from the top, so the surplus air that is not circulated is discharged outside through the exhaust duct 5 at the bottom along with odor etc., and the air in the air shower room 8 is exchanged with clean air. This is how it was done.

It is better to install the relief damper as close to the air shower room as possible.

As described above, the present invention is an air shower room having the structure described above, in which surplus air discharged from the clean room is guided to the air shower room via the relief damper, and dirty air is exchanged with clean air due to the pressure difference with the clean room. Although the device is simple in terms of equipment, it has the great effect of providing an air shower room that is odor-free, hygienic, and uses energy effectively.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a conventional air shower chamber, and FIG. 2 is a cross-sectional view of the air shower chamber of the present invention. 1... Clean room, 2... Filter, 3... Blower, 4... Air supply duct, 5... Exhaust duct, 6... Air outlet, 7... Floor grating, 8... Air shower room, 9... Relief damper.

Claims (1)

[Scope of utility model registration request] A relief damper 9 is provided on the outer wall of the clean room 1 between the lower part of the ceiling filter 2 of the clean room 1 and the upper part of the air shower room 8, and the relief damper 9 and the upper part of the air shower room 8 are directly connected by an air supply duct 4. , an exhaust duct 5 is provided at the lower part facing the outside of the air shower chamber 8,
The clean air in the clean room 1 is guided to the upper part of the air shower chamber 8 via the relief damper 9 and the air supply duct 4, and the surplus air in the air shower chamber 8 is guided to the lower part of the air shower chamber 8 by using the pressure difference between the clean room 1 and the air shower chamber 8. Exhaust duct 5 installed in
A structure of an air shower chamber in a clean room, characterized in that air is discharged to the outside.