JP6080202B2 - Drive - Google Patents

Description

  The present invention relates to a drive source used for maintaining only a limited atmosphere at a predetermined low humidity state in a place where various operations such as assembly of electronic parts and experiments are performed.

Conventionally, in a place where various operations such as assembly of electronic parts and experiments are performed, the booth space is separated from the external space by a synthetic resin sheet in order to keep only a limited atmosphere in a predetermined state. The booth that has been used is widely used.
Furthermore, in order to improve the airtightness and heat insulation of a booth space, what made the sheet | seat a double structure is proposed (for example, refer patent documents 1-2).

Japanese Patent Laid-Open No. 11-83104 JP 2008-275233 A

  By the way, the above-mentioned conventional booth is formed between the curtains of the booth space (and the double structure) by keeping the booth space at a positive pressure so as to eliminate the influence of the atmosphere of the external space and the entrance and exit of people as much as possible. Air) was designed to flow out to the outside space.

  For this reason, the amount of air supplied to the booth space is increased, energy costs are increased, and particularly when handling substances that are not preferable to flow out to the external space, such as solvents and fine particles, There were problems such as the need for local forced exhaust equipment nearby and restrictions on booth use.

  In view of the problems of the above-described conventional booth, the present invention provides a drive source that can reduce the amount of air-conditioned air supplied to the booth space and suppress the outflow of substances in the booth space to the external space. With the goal.

In order to achieve the above object, the drive source of the present invention has a double structure for the curtain that constitutes the peripheral wall of the booth body, and the exhaust section is disposed in the space formed between the curtains of the double structure. The booth space partitioned by the inner curtain of the double structure curtain and the double structure of the double structure curtain by dehumidifying the exhausted air while forcibly exhausting from the exhaust section The space formed between the curtains of the double structure is maintained at a negative pressure with respect to the booth space and the external space , and the booth space is set to a positive pressure with respect to the external space. characterized in that a dehumidifying unit for supplying to so that is retained.

In this case, it is possible to dispose the exhaust part at the bottom of the plurality of positions of the space formed between the double structure curtains.

  According to the drive source of the present invention, the curtain constituting the peripheral wall of the booth main body has a double structure, and the exhaust air is forcibly exhausted from the space formed between the curtains of the double structure. The space formed between the double-structure curtains is divided into the booth space partitioned by the inner curtain of the double-structure curtain and the space formed between the double-structure curtains through a dehumidifying unit. By supplying the booth space and the external space so as to be maintained at a negative pressure, compared to the case where the booth space is simply maintained at a positive pressure, the influence of the atmosphere of the external space and the entrance and exit of people is reduced. It is difficult to receive, can reduce the amount of air-conditioned air supplied to the booth space, can reduce the energy cost, and has a double structure that is maintained at a negative pressure with respect to the booth space and the external space. By intervening space formed between Ten, can prevent the material within the booth space flows out to the external space aboard the air, it is possible to use the booth in a safe and low cost.

  In addition, by exhausting air from a plurality of locations below the space formed between the double-structured curtains, it is possible to reduce the pressure deviation of the space formed between the curtains, and to the booth space. It is possible to reliably prevent the air in the space from flowing in and stably maintain the atmosphere of the booth space in a predetermined state.

One Example of the drive source of this invention is shown, (a) is front sectional drawing, (b) is XX sectional drawing of (a). It is explanatory drawing which shows an example of the driving | running state of the drive source of this invention.

  Embodiments of the drive source of the present invention will be described below with reference to the drawings.

1 to 2 show an embodiment of the drive source of the present invention.
In this drive source 1, the curtain 3 constituting the peripheral wall of the booth body 2 has a double structure of an inner curtain 3a and an outer curtain 3b, and is forced from a space 5 formed between the double curtains 3a and 3b. While exhausting, the exhausted air is separated into the booth space 4 partitioned by the inner curtain 3a through the dehumidifying unit 6 and the space 5 formed between the double-structured curtains 3a and 3b. The space 5 formed between the curtains 3a and 3b is supplied to the booth space 4 and the external space 9 so as to be maintained at a negative pressure.

  The booth main body 2 has a chamber 20 disposed on the top of the booth main body 2 and four support columns 23 erected on the floor surface FL, and the four corners of the chamber 20 are upper ends of the four support columns 23. Are connected to each other.

The chamber 20 is formed by combining an upstream chamber 21 connected from the dehumidifying unit 6 via the duct 7 and a downstream chamber 22 disposed downstream thereof.
The upstream chamber 21 includes an air filter unit 21 a, and cleans the air sent from the dehumidifying unit 6 through the duct 7 and supplies it to the downstream chamber 22.
The downstream chamber 22 includes a diffusion plate 22a, a blow-out face plate 22b in which vent holes such as a screen mesh and punching metal are formed, and a blow-out face plate 22c in which vent holes are formed. The booth space 4 partitioned by the curtain 3a and the space 5 formed between the curtains 3a and 3b having a double structure are supplied uniformly.
In addition, the ratio of the air supplied to both the spaces 4 and 5 can be arbitrarily determined by adjusting the vent holes formed in the blowout face plate 22b and the blowout face plate 22c and the opening area of the vent holes with a closing plate (not shown). Can be adjusted.

Further, the dehumidifying unit 6 introduces air forcedly exhausted from the exhaust section 8 disposed in the outer curtain 3b from the space 5 formed between the double-structured curtains 3a and 3b, and supplies dry air. If it can discharge | release, the system will not be specifically limited, A conventionally well-known dehumidification unit can be used.
The dehumidifying unit 6 may be provided with a temperature control unit, or a unit having a dehumidifying function and a temperature control function as necessary.

By the way, in this embodiment, in order to exhaust the air in the space 5 formed between the curtains 3 a and 3 b having the double structure, the exhaust portion 8 is positioned below the outer curtain 3 b at the diagonal position of the booth body 2. It arranges to.
In this way, by exhausting air from a plurality of locations below the space 5 formed between the double-structured curtains 3a and 3b, the pressure in the space 5 formed between the curtains 3a and 3b is biased. Therefore, it is possible to reliably prevent the air in the external space 9 from flowing into the booth space 4 and stably maintain the atmosphere of the booth space 4 in a predetermined state.
In addition, the position and the number of the exhaust units 8 can be arbitrarily set.

The curtains 3a and 3b are connected to the upstream chamber 21 at their upper ends, and are set to a length such that their lower ends are substantially in contact with the floor surface FL, thereby enabling the booth space 4 and the double structure partitioned by the inner curtain 3a. The airtightness of the space 5 formed between the curtains 3a and 3b is maintained to some extent with respect to the space 5 and the external space 9 formed between the curtains 3a and 3b having a double structure.
The distance between the inner curtain 3a and the outer curtain 3b can be arbitrarily set in the range of several centimeters to several tens of centimeters, but the distance between the places where people enter and exit is the double curtains 3a, 3b. It is preferable to set the dimension once retained in the space 5 formed between them, specifically, 50 cm or more.
Thereby, when a person goes in and out, it is not necessary to open the inner curtain 3a and the outer curtain 3b at the same time, and the atmosphere of the space 5 formed between the double curtains 3a and 3b is stable. Since the inner curtain 3a can be opened, the influence of people coming and going can be eliminated as much as possible.
The curtains 3a and 3b can be made of a synthetic resin sheet such as a vinyl chloride resin or a polyolefin resin, or can be made of any material having no air permeability, such as a cloth laminated with a synthetic resin film.

The atmospheric pressure in the booth space 4 is slightly higher than the atmospheric pressure in the external space 9 (usually atmospheric pressure), specifically, the atmospheric pressure in the external space 9 + several Pa, more specifically, a positive pressure of about +2 to +3 Pa. It is preferable to be held in the area.
For this reason, the dehumidifying unit 6 is set so that the atmospheric pressure condition in each space satisfies the condition of the atmospheric pressure of the space 5 formed between the double curtains 3a and 3b <the atmospheric pressure of the external space 9 <the atmospheric pressure of the booth space 4. Operate the equipment that constitutes the circulation path of the air that contains it.
Thereby, air flows from the booth space 4 and the external space 9 into the space 5 formed between the curtains 3a and 3b having a double structure through the gap between the lower ends of the curtains 3a and 3b and the floor surface FL. Become.

FIG. 2 shows the balance of air inflow and outflow and the booth space 4 of the drive source using the double curtains 3a and 3b (example) and the drive source using the single curtain (comparative example). An example of the dew point temperature and atmospheric pressure of the air inside is shown.
As is clear from this, it was confirmed that in the example, the dew point temperature of the air in the booth space 4 can be kept lower and the inside of the booth space 4 can be kept at a positive pressure than the comparative example.

  As described above, according to the drive source 1, the space 5 formed between the curtains 3a and 3b having the double structure is held at a negative pressure with respect to the booth space 4 and the external space 9. Compared to the case where the booth space 4 is simply held at a positive pressure or a negative pressure, it is less affected by the atmosphere of the external space 9 and the entry / exit of people, for example, the dew point temperature of the air in the booth space 4 is kept low. Therefore, the amount of air-conditioned air supplied to the booth space 4 can be reduced, the energy cost can be reduced, and the curtain 3a having a double structure that is held at a negative pressure with respect to the booth space 4 and the external space 9. By interposing the space 5 formed between 3b, it can suppress that the substance in the booth space 4 rides on air, and flows out into the external space 9, and can use a booth safely and at low cost.

  The drive source of the present invention has been described above based on the embodiments thereof. However, the present invention is not limited to the configurations described in the above embodiments, and the configurations are appropriately changed without departing from the spirit of the present invention. It is something that can be done.

  Since the drive source of the present invention has the characteristics of reducing the amount of air-conditioned air supplied to the booth space and suppressing the substance in the booth space from flowing out to the external space, the assembly of electronic components, In a place where various operations such as experiments are performed, it can be suitably used for a booth used for maintaining only a limited necessary atmosphere in a predetermined state.

DESCRIPTION OF SYMBOLS 1 Drive source 2 Booth main body 20 Chamber 21 Upstream side chamber 22 Downstream side chamber 23 Support | pillar 3 Curtain 3a Inner curtain 3b Outer curtain 4 Booth space 5 Space formed between curtains of double structure 6 Dehumidification unit 7 Duct 8 Exhaust part 9 External space

Claims (2)

The curtain that constitutes the peripheral wall of the booth body has a double structure, and the exhaust part is arranged as the only exhaust part of the booth body in the space formed between the curtains of the double structure, and the exhaust part is forcibly exhausted. And performing dehumidification of the exhausted air so that the double structure is divided into a booth space partitioned by an inner curtain of the double structure curtain and a space formed between the double structure curtains. the space formed between the curtain is held in a negative pressure relative to the booth space and outer space, and that the booth space provided dehumidifying unit for supplying to so that is held in positive pressure relative to the external space A featured drivehose. 2. The drive source according to claim 1 , wherein exhaust portions are disposed at a plurality of positions below a space formed between the curtains having a double structure.

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