JPH029323Y2 - - Google Patents

Description

[Detailed description of the invention] A. Purpose of the invention Industrial application field This invention relates to improvement of an air shower device for a clean room.

BACKGROUND TECHNOLOGY An air shower room is provided at the entrance and exit of a clean room to prevent dust from being brought in by people entering and exiting the room. Air showers are used to remove dust by blowing clean air onto the human body and clothes.

The structure of the conventional air shower room simply uses a blower to circulate air between the air shower room and a high-performance filter, 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 accumulate noticeably,
There were constant complaints from users.

In addition, relief dampers are generally installed directly on the partition wall between the clean room and the outdoors, and the clean air that is exhausted to maintain the set pressure difference between the indoor and outdoor areas is simply exhausted, making efficient use of energy. There was a problem with this. Therefore, as disclosed in Japanese Utility Model Application Publication No. 168644/1983, a system was developed in which clean air discharged from a clean room is supplied to an air shower through a duct.

Problems that the invention aims to solve: In the case of Utility Model Application Publication No. 59-168644, which supplies clean air discharged from a clean room to an air shower room through a duct, the air shower system uses a duct to circulate clean air within the air shower room. The disadvantage was that the cost of remodeling the interior was high.

In consideration of the above, the present invention effectively utilizes the energy by discharging the clean air that was previously discharged from the clean room through the air shower room in order to maintain the set pressure difference between the indoor and outdoor spaces, and reduces the cost of remodeling the air shower room. The object of the present invention is to provide an air shower device with a simple structure.

B. Structure of the invention Means for solving the problem The invention provides relief dampers that are installed above and below the door leading in and out of the air shower room in an air shower room adjacent to a clean room so as to open from the side with higher pressure to the side with lower pressure. This is an air shower device integrated with a relief damper.

Function Relief dampers are installed above and below the doors of the two entrances to the clean room and air shower room, as well as the air shower room and the outside (contaminated area), and the relief dampers are opened from the side with higher pressure to the side with lower pressure. By attaching it to the air shower, dust and odors in the air shower room can be efficiently removed and exhausted, and even if the pressure difference drops due to the opening of the door, the airflow passage is closed due to the way the relief damper opens, preventing backflow of airflow. There's no need to worry about it happening.

Embodiments Hereinafter, preferred embodiments of this invention will be described in detail with reference to the accompanying drawings.

Reference numeral 1 represents the entire air shower device, in which a door 3 is provided between the clean room 4 and the air shower chamber 5, and relief dampers 2, 2 are installed above and below the door 3. It is designed to open so that clean air can enter into the clean room 4, and conversely, the structure is such that airflow does not flow from the air shower chamber 5 toward the clean room 4.

Further, a door 3' is provided at the boundary between the air shower room 5 and the outside 6, that is, the contaminated area side.
Similarly, relief dampers 2' and 2' are installed so that the air flows from the side with the highest pressure difference to the side with the lowest pressure difference between the top and bottom, and when a worker enters the air shower room 5 from the outside 6, Adhering dust, odors, etc. are removed by the clean air coming out from the relief dampers 2, 2 installed above and below the door 3', and contaminated air is removed from the relief dampers 2, 2 installed above and below the door 3' on the outdoor side 6. The air is exhausted from the dampers 2', 2' to the outside 6, and the air shower chamber 5 is always filled with clean air. In this way, by simply installing the relief dampers 2, 2' above and below the existing doors 3, 3', the clean air that was previously only exhausted can be effectively used, and an efficient air shower device 1 can be created with a simple modification. That's what you get.

C. Effects of the invention The clean air in the clean room, which was previously simply exhausted, is taken into the air shower room through a relief damper attached to the door, making it an air shower device.Effective use of energy can be achieved, and the structure of the air shower device has been improved. It is simple and leads to cost reduction.

In addition, by installing relief dampers above and below the entrance/exit door, the incoming clean air is distributed throughout the equipment, making it possible to efficiently remove dust and odors. The upper and lower relief dampers allow efficient exhaust.

In addition, the relief damper is designed to open only from the high pressure side to the low pressure side, so even if the pressure difference drops due to the opening of the door, the relief damper closes the air flow path, so there is no backflow. Since it is a simple modification, an efficient air shower device can be obtained at low cost.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a sectional view showing an air shower chamber, and FIG. 2 is a front view. 1... Air shower device, 2, 2'... Relief damper, 3, 3'... Door, 4... Clean room, 5... Air shower room, 6... Outdoor, arrows in the figure indicate the flow of wind. It is.

Claims (1)

[Scope of utility model registration request] Air shower room 5 adjacent to clean room 4
, a door 3 for entering and exiting the air shower room 5,
An air shower device integrated with a relief damper, characterized in that relief dampers 2 and 2' are installed above and below 3' so as to open from the higher pressure side to the lower pressure side.