JPH05306990A - Environment tester with air curtain - Google Patents

Abstract

PURPOSE:To obtain an environment tester with an air curtain capable of simply, inexpensively and highly reliably forming the air curtain for the outside air incursion prevention in an opening part of an access window without extreme enlargement of the whole environment tester and worsening of an external appearance thereof in regard to the environment tester having the access window for observation, operation, inspection and the like of goods in a test room or for taking in an out them to and from the test room. CONSTITUTION:An environment tester has an air conditioning part 2 and serves to introduce part of regulation air blown from the air conditioning part 2 to an access window along device internal walls 12, 13 continuing to the access window 4 of an environment test room 1 having the access window 4 and air blowing duct 6 for blowing like a curtain over the whole face of a window opening 41 or almost the whole face thereof is formed. And an air suction duct 7 is formed in order to suck blown air by the action of blowing-in conditioning part 2 and suck it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is an environment in which electric resistance, electronic equipment, parts thereof, etc. are exposed to a predetermined temperature or temperature and humidity, and environmental resistance such as heat resistance, cold resistance, humidity resistance can be tested. Regarding test equipment.

[0002]

2. Description of the Related Art Generally, this type of environmental test apparatus has a test room provided with an air conditioner, and air of a predetermined temperature or temperature / humidity obtained in the air conditioner is circulated in the test room, and the air is supplied to the test room. The installed test object is exposed to the temperature or temperature and humidity. Items are usually installed in the test room by opening and closing the door provided in the test room. Some of them are equipped with an access window for externally observing the articles installed in the test room and for manipulating and inspecting them with a hand. Further, instead of the opening / closing door, there is also a window in which the window also serves as a part for installing and taking out articles in the test chamber.

The access window for the purpose of such operations, whether it is in an open state from the beginning or openable and closable, is in an open state for operating articles in the test chamber. External air enters the test chamber from here, which causes disturbance of the room temperature and temperature / humidity, which causes a decrease in test accuracy and reliability. Therefore, for such a window, it has been proposed to hang a flexible, blind-shaped outside air intrusion prevention member having a vertical cut in a strip shape or to install an air curtain generator.

[0004]

However, the above-mentioned members such as the blinds are not easy to use because they cannot sufficiently prevent the invasion of the outside air and also obstruct the observation, operation and inspection of the articles. Further, the air curtain device usually has a motor for driving a fan that blows out air in a curtain shape, and the motor is subject to severe temperature or temperature / humidity atmosphere because it is restricted by operating temperature and humidity. It is difficult to install inside the test room, but if you install it outside the test room,
The external mounting space is required for that amount, and the external appearance is not good. Furthermore, the installation of the air curtain device itself is costly.

Therefore, the present invention is an environmental test apparatus having an access window for observing, operating, inspecting, etc., an article in a test room, or further for putting an article in and out of a test room, in an opening portion of the access window. An object of the present invention is to provide an environmental test device with an air curtain, which can easily and inexpensively form a highly reliable air curtain for preventing outside air intrusion without inviting a particularly large size of the entire device and deterioration of appearance.

[0006]

An environmental test device with an air curtain according to the present invention has an air conditioner along an inner wall surface of the device which is continuous with the access window of an environmental test room having an air conditioner. A part of the regulated air blown from the air is guided to the access window to form an air blowing duct that blows out in a curtain shape over the entire surface or substantially the entire window opening, and the blown air is supplied to the air conditioning unit with an air blowing force. It is characterized in that an air suction duct is formed so as to act and suck it.

[0007]

According to the environmental test apparatus of the present invention, most of the conditioned air blown out from the air conditioner to bring the environmental test chamber into a predetermined temperature or temperature / humidity environment is guided to the article installation area in the test chamber and is again air conditioned. Cycle back to. Then, a part of the air blown out from the air conditioner is also guided to an air blowout duct continuously formed in the access window, and the curtain blows out from the air blowout port at the tip thereof to cover all or almost all of the access window opening. The air curtain that has blown out in the shape of air flows toward the air suction duct that is also continuously formed with respect to the access window, and part of the air suction force of the air conditioning unit acts on the suction duct. It is sucked into the suction duct and returns from there to the air conditioning unit.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic cross section of an environment test apparatus according to an embodiment. FIG. 2 is a front view of the device. This apparatus is provided with an environmental test room 1, in which an air conditioner 2 is provided at the back of the interior and an entrance / exit opening 11 for an article W to be tested is provided on the front side. The test chamber 1 also has an access booth 3 which covers the opening 11 and is connected to the opening 11. The access booth 3 is provided with an access window 4. Further, a rack 5 facing the opening 11 of the chamber is arranged in the test chamber 1, and an air blow-out duct 6 and an air suction duct 7 are formed along the inner wall surfaces 12 and 13 of the apparatus which are continuous with the access window 4. There is.

The peripheral walls of the main body of the test chamber 1 and the access booth 3 are constructed to contain a heat insulating material. A humidifier 21, a dehumidifying cooler 22, a heater 23, and an air agitation / circulation fan 24 are arranged in this order from bottom to top in the air conditioning unit 2, and a drive motor (not shown) of the fan 24 is provided on the outer surface of the chamber 1. It is fixed.

The air conditioner 2 has an air outlet 25 at the upper end and an air inlet 26 at the lower end, and a space 27 faces the air outlet 25, and a lower end of the space has a rectifying function. A plate 28 is provided. The perforated plate 28 is located at the upper end of the installation area S of the article W. A front end portion 271 of the space 27 on the perforated plate 28, that is, an end portion of the air conditioning unit 2 which is remote from the air outlet 25 communicates with the air outlet duct 6 along the inner wall surface 12 of the apparatus. The duct 6 and the air suction duct 7 will be described in detail later.

The access booth 3 has an upper wall 31 that horizontally projects from the upper edge of the article entrance / exit opening (square opening in this example) 11 of the main body of the test chamber 1, and is horizontally longer than the upper wall 31 from the lower edge of the opening 11. It is composed of a protruding lower wall 32, a front wall 33 extending between the upper and lower walls 31, 32, and side walls 34 closing both sides. The front wall 33 is inclined so as to project from the top to the front toward the front of the booth, and a total of two access windows 4 are formed on the left and right sides of the front wall 33.

Each access window 4 is, but not limited to, a rectangular window opening 41 and a door 42 for opening and closing the window opening 41.
Is included. The door 42 includes an observation window 40 in which a transparent plate 40a made of glass or the like is fitted, and the booth front wall 3
The window 4 can be opened / closed in association with the vertical movement of the guide 44 provided on the front surface of the window 3.

The door 42 of each window 4 is a chain / sprocket device 45 (upper and lower sprockets 45a, 45b and an endless chain 45 wound around the sprockets 45a, 45b) which can be operated in the reverse direction by an electric motor 43 with a brake fixed to the outer surface of the booth 3.
It is connected to the chain 45c of c) and moves up and down by the normal rotation or reverse rotation operation of this chain 45c by the motor 43.

The rack 5 arranged in the test chamber 1 is provided with a plurality of article support parts 51 in order in the vertical direction, and the articles W supported by the respective support parts are discharged from the air conditioning part 2 at a predetermined temperature.
Sufficient clearances are provided at various locations to allow sufficient exposure to humid air. This rack can be easily formed by a rod material, a wire material, a perforated plate body, a combination thereof, or the like so as to obtain such a ventilation gap.

Both ends of the rack 5 are guided by guides 52 provided upright in the test chamber 1 so that the rack 5 can be lifted and lowered, and any supporting portion 51 can face a predetermined position of the test chamber opening 11 by the lifting. .. The lifting and lowering of the rack 5 is performed by the drive device 50. The rack drive device 50 includes an electric motor 501 with a brake mounted on the upper surface of the ceiling wall 14 of the test chamber 1, and the ceiling wall 1.
4 includes a pair of chain and sprocket devices 502 extending through both outer sides of the rack 5 in the test chamber 1 to the bottom of the test chamber 1 and a transmission device 503 connecting the motor 501 and the device 502. Each chain / sprocket device 502 comprises a sprocket 502a on the ceiling wall 14, a sprocket 502b at the bottom of the room, and an endless chain 502c wound around these, and a part of the chain 502c is connected to the rack 5.

Therefore, by rotating the motor 501 in the normal direction or in the reverse direction, the chain 502c is rotated in the normal direction or the reverse direction, whereby the rack 5 is moved up and down, and the arbitrary article supporting portion 51 is opened.
1 can be arranged at a predetermined position. The air outlet duct 6 described above
Is the opening 4 of the access window 4 along the inner surface of the front wall of the test chamber 1, the inner surface of the upper wall 31 of the booth 3, and the inner surface of the front wall 33.
1 is formed of a device inner wall surface 12 extending to the upper inner edge of the device 1, and a plate body 61 provided at a distance from the inner wall surface 12. The air outlet 62 of the duct 6 extends laterally along the upper inner edge of the window opening 41, and the air blown out from the outlet 62 forms an air curtain that covers the entire surface along the window opening 41. The cross section of the nozzle is narrowed down.

Further, the air intake duct 7 has a booth front wall 33 extending downward from a lower edge of the access window 4 of the booth 3.
Inner wall surface 13 including the inner surface of the booth and the upper surface of the booth lower wall 32
And a horizontal plate body 73 spaced apart from the horizontal plate body 73, and the air outlet 62 of the air outlet duct 6
The air suction port 74 that has a large number of ventilation holes
Therefore, the inner wall end portion 75 of the duct 7 has a suction port 26 so that the suction force of the air blowing port 26 of the air conditioning unit 2 is exerted.
It is located close to.

The horizontal plate 73 forming the duct 7 also serves as a table on which articles are placed. The articles W are taken in and out of the rack 5 via the access booth 3, and the articles on the rack are observed, operated and inspected. Is performed by aligning the target article support portion 51 on the rack 5 with the height of the plate body 73. In addition, the plate body further includes the inner surface 7 of the front wall of the test chamber 1 main body.
6 along with the inner end portion 75 of the duct 7
May be brought closer to or connected to the air conditioner suction port 26.

According to the environmental environment device described above, the air conditioner 2 is operated so that the inside of the test chamber 1 is set to a predetermined temperature and humidity atmosphere. Most of the conditioned air blown out from the air conditioning unit 2 during the operation is guided to the article installation area S in the test room 1,
It circulates so as to return to the air conditioning unit again. Thereby, the article W such as the electronic device supported by the rack 5 and the parts thereof is exposed to the temperature and humidity, and a predetermined environment resistance test can be performed.

A part of the air blown out from the air conditioner 2 is also guided to the air blowing duct 6 continuously formed in the access window 4, and the entire surface of the access window opening 41 is covered from the air blowing port 62. Like a curtain,
This blown out air curtain is the same as the access window 4
To the air inlet 74 of the air intake duct 7 which is continuously formed, the air is blown into the air intake duct 7 because a part of the air intake force of the air conditioning unit acts on the air intake duct 7. From there, it returns to the air conditioning unit 2.

The test object article (electronic device, parts thereof, etc.) W is placed in the environmental test room 1 by opening the article entry / exit door 42 of the access window 4 of the access booth 3, and from here the article W is placed in the booth 3. While being inserted from the outside onto the bottom horizontal plate 73, the rack 5 in the test chamber 1 is appropriately moved up and down by the drive device 50 thereof so that a desired one of the article support parts 51 is exposed to the opening 11 of the test chamber 1 main body. No, and the height is aligned with the horizontal plate 73. In this state, the article W inserted into the booth is further inserted further and installed on the support portion 51. After that, the rack 5 may be moved up and down as necessary, and the article W may be placed at an appropriate test position.

When taking out the article W from the rack 5 to the outside of the apparatus, the reverse operation to the above may be performed. Further, when observing the article W on the rack, the target article W on the rack 5 is moved to a position visible from the observation window 40 of the access window door 42, and observed through the window 40 or by opening the door 42. do it.

When the articles on the rack 5 are to be operated or inspected, the door 42 of the access window 4 is opened, the desired article W on the rack 5 faces the horizontal plate 73, and the article W is placed on the rack 5. It may be left as it is, or if necessary, pulled out onto the horizontal plate 73. According to the environment testing device described above, a large number of articles W can be mounted on the rack 5 at a time to efficiently perform a test, and the articles can be easily taken in and out, observation, operation, inspection, and the like. Since a person does not need to enter the test room 1 under harsh conditions, there is an advantage that the physical burden is less and the safety is ensured.

As described above, the article W is taken in and out,
Even if the door 42 of the access window 4 is opened for operation, inspection, etc. of the article W, the window opening 41 blows out from the air conditioning unit 2, and an air curtain is formed by the air having substantially the same temperature and humidity conditions as in the test area S. Since the invasion of the outside air is suppressed by this, the disturbance of the temperature and humidity in the test chamber 1 is suppressed as much, and a highly accurate and highly reliable test can be performed.

Moreover, since the air curtain can be easily formed by utilizing the air blown out from the air-conditioning unit 2, there is no need to make the apparatus as a whole large, complicated or expensive.

[0026]

As described above, according to the present invention, there is provided an environmental test device having an access window for observing, operating, inspecting, etc., an article in a test room, or further for putting an article in and out of the test room. Provide an environmental test device with an air curtain that can easily and inexpensively form a highly reliable air curtain for preventing outside air intrusion in the opening of an access window without increasing the overall size of the device or deteriorating the appearance. be able to.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of an embodiment of the present invention.

2 is a front view of the device shown in FIG. 1. FIG.

[Explanation of symbols]

 1 test room 11 test room opening 12, 13 device inner wall surface S article installation area 2 air conditioner 3 access booth 4 access window 40 observation window 41 access window opening 42 access window door 5 rack 51 article support 50 rack drive 6 air blow Duct 61 Plate 62 Air outlet 7 of duct 6 Air suction duct 73 Plate 74 Air inlet of duct 7 75 Inner end of duct 7 W Test target article

Claims (1)

[Claims] 1. A part of the conditioned air blown out from the air conditioner is guided to the access window along an inner wall surface of the apparatus which has an air conditioner and has an access window and which is continuous with the access window. An air outlet duct for blowing out in a curtain shape over the entire surface or almost the entire surface of the opening is formed, and an air suction duct is formed so as to suck the blown out air by applying the air blowing force of the air conditioning unit. Environmental test equipment with air curtain.