JPH10132840A - Jig for measuring velocity of blowoff wind of clean room - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jig for measuring the velocity of blowoff wind of a clean room wherein velocity of blowoff wind can be simply and easily measured without generating irregularity in measured values. SOLUTION: A main shaft 2 is in continuous form. A positioning member 3 is arranged on one end of the main shaft 2. The positioning member 3 is provided with a plurality of abutting members 5 protruding upward which abut against suitable measuring part positions, and a sensor filing member 7 which fixes a sensor S for measuring the wind velocity at a position isolated from the abutting members 5, leaving a specified space. The other end of the main shaft 2 is made a clamping part 8. A bracket 9 for a measuring apparatus on which an anemometer F linked with the sensor S for measuring the wind velocity is fixed is arranged on the clamping part 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for measuring a blown air velocity in a clean room or an air shower room (hereinafter simply referred to as a "clean room") after completion of construction.

[0002]

2. Description of the Related Art Conventionally, after the completion of construction of a clean room or when measuring the blown air velocity during inspection, as shown in FIG.
Using the 0 etc., the measurer M himself / herself to the vicinity of the measurement site anemometer F
And held his hand to measure the blowing wind speed.

[0003]

However, the wind speed measurement is
After completion of construction, it is necessary to check whether the air volume from the multiple outlets in the clean room is constant, and to check the secular change at the time of inspection, the measurement point must be constant. When 50 mm is set from the center of the outlet, 50 mm from the center of the outlet uniformly when measuring.
When the above method is used, it is difficult to keep the anemometer below 50 mm from the outlet and it is difficult to maintain the anemometer. Such fatigue accumulates.

SUMMARY OF THE INVENTION In view of the foregoing, an object of the present invention is to provide a jig for measuring a blowing speed of a clean room, which can easily and easily measure the blowing speed of the clean room without variation in measured values. .

[0005]

According to a first aspect of the present invention, an elongated main shaft and a positioning member are provided at one end of the main shaft, and the positioning member is provided with a plurality of positioning members which abut at appropriate positions of the blowout measurement site. A contact member protruding upward from the contact member and a sensor mounting member for mounting a wind speed measurement sensor at a predetermined distance from the contact member; A bracket for a measuring instrument for mounting an anemometer connected to the measuring instrument is provided.

According to the present invention having the above-described structure, the wind speed measuring sensor connected to the anemometer is positioned at a predetermined distance (for example, 50 m) from the contact member which comes into contact with the blowout measurement site (blowout port).
m) Since it is at the existing position, the measurer can easily perform the measurement simply by applying the contact member to the outlet.

A second invention is characterized in that the distance from the blowout measurement site to the sensor is adjustable so as to be maintained at a predetermined measurement interval distance.

In the present invention having the above configuration, the sensor can be maintained at a predetermined measurement interval distance from the outlet only by contacting the contact member with the outlet which is the outlet measurement site.

A third invention is characterized in that the main shaft and the positioning member are rotatable by a rotation pin.

According to the present invention having the above-described structure, the main shaft is fixed to the positioning member by the rotating pin, so that the abutment member is applied to the air outlet, and then the anemometer is mounted without maintaining the main shaft vertical. The gripped portion can be measured at an arbitrary position away from immediately below the measurement position.

[0011]

1 to 4 show a jig for measuring the blowing air velocity according to the present invention. The jig 1 for measuring the blowing air velocity has a long main shaft 2 and one end of the main shaft 2 has a flat plate portion 10. And a positioning member 3 provided with a rotation pin 11. It is preferable that the length of the main shaft 2 can be freely adjusted.

The positioning member 3 has contact members 5a, 5b (hereinafter, generally referred to as 5) projecting upward from an end of a U-shaped contact bar 4 which is in contact with a wind speed measurement site at an appropriate position. ), And a flat plate-shaped connecting member 6 attached via a flat plate portion 10 of the main shaft 2 and a rotating pin 11 below the positioning member 3 is provided at the center of the contact bar 4 at a connection point X. Are connected by connecting means such as welding. Further, a sensor mounting member 7 for attaching the wind speed measuring sensor S to the connecting member 6 so that the wind speed measuring sensor S is positioned at a predetermined distance L (for example, 50 mm) from the contact member 5 can be adjusted. Attach.

As a means for adjusting the sensor mounting member 7, a long hole 12 is made in the connecting member 6 so that the sensor mounting member 7 can be adjusted.
A more protruding screw thread 13 is passed through the elongated hole, and a distance L from the contact member 5 to the sensor S is set to a necessary distance (for example,
mm), and fixed with a nut 14 (a wing nut is used in the embodiment). The wind speed measuring sensor S is not limited to an electric sensor or a mechanical sensor (for example, a windmill type) capable of measuring the wind speed.

The other end of the main spindle 2 is a gripping portion 8, and a measuring instrument bracket 9 for mounting an anemometer F connected to a wind speed measuring sensor S via a connecting cord C is provided. Stop it. It is preferable that the measuring instrument bracket 9 be attached to any position of the main shaft 2 so as to be movable.

In the above configuration, when measuring the wind speed in the clean room, as shown in FIG. 4, the measurer M holds the gripping portion 8 of the jig 1 for measuring the blow-off wind speed and the surface of the outlet 21 attached to the ceiling 20 of the clean room. Abuts the contact member 5. Since the wind speed measurement sensor S is located at a predetermined distance from the contact member, for example, 50 mm, the measurer M can always measure the wind speed at a specified position without performing the alignment.

[0016]

As described above, according to the present invention, it is possible to easily measure the blowing air velocity at a predetermined distance from the outlet only by pressing the contact member against the outlet with the grip portion. As described above, the measurer can easily and easily measure the blowout wind speed from the floor without measuring the wind speed in an unstable state by climbing on a stepladder or the like, and always measure the measurement location at a predetermined position. Therefore, the measurement results can be reliably compared in the measurement at the time of completion of construction and the measurement of aging during inspection. At this time, by setting the protrusion length of the contact member from the sensor to be adjustable so that the distance from the sensor to the outlet is at a predetermined position, the sensor can be moved to the predetermined distance only by pressing the contact member against the outlet. Can be held. In addition, when the main shaft and the positioning member can be tilted by the rotation pin, the main shaft can be measured at a position where the measurer can easily measure without maintaining the main shaft vertically, and the reading of the anemometer can be accurately read. It has the effect of being able to do so.

[Brief description of the drawings]

FIG. 1 is a front view of a jig for measuring a blown air velocity from a clean room according to the present invention.

FIG. 2 is a side view of a jig for measuring a blown air velocity from a clean room according to the present invention.

FIG. 3 is a rear view of a main part of a jig for measuring a blown air velocity from a clean room according to the present invention.

FIG. 4 is an explanatory view of the use of a jig for measuring a blown air velocity from a clean room according to the present invention.

FIG. 5 is an explanatory view of a conventional measurement of a blown air velocity from a clean room.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Jig for measuring the air velocity of clean room blowout 2 Main shaft 3 Positioning member 5 Contact member 7 Sensor mounting member 8 Holding part 9 Bracket for measuring device 11 Rotating pin S Sensor for measuring wind speed F Anemometer C Connecting cord

Claims (3)

[Claims] An elongated main shaft, and a positioning member provided at one end of the main shaft, the positioning member is provided with a plurality of contact members protruding upward and in contact with an appropriate position of a blowout measurement site and a predetermined distance from the contact member. A sensor mounting member for mounting an anemometer sensor at the set position, the other end of the main shaft as a grip portion, and a grip for a measuring instrument for mounting an anemometer connected to the anemometer sensor is provided on the grip portion. Jig for measuring the speed of air blown out of a clean room. 2. The jig for measuring a wind speed of a clean room blow-off air according to claim 1, wherein the jig is mounted so as to be adjustable to a length that keeps a distance from the blow-out measurement site to the sensor at a predetermined measurement interval. 3. The jig for measuring a blow-out air velocity in a clean room according to claim 1, wherein the main shaft and the positioning member can be tilted by a rotation pin.