JP2021162428A - Environmental testing device - Google Patents

Abstract

To provide an environmental testing device which can change the amount of blowing-out wind sent straight to a test room and the amount of wind which blows out in a diffusion direction.SOLUTION: An environmental test device 1 includes a test room 8 in which a sample is set, air conditioning means 22, and an air sending machine 30. Air is adjusted by the air conditioning means 22 and is sent into the test room 8 by the air sending means 30. The air sending machine 30 has a blade member 31 and a wind direction changing member 33. The blade member 31 is a centrifugal rotary blade which causes a centrifugal force to act on air taken in by rotation and blows the air out into an outer direction. The wind direction changing member 33 has a cylinder part 48 with an opening in both ends, and the cylindrical part 48 covers at least a part of the region around the blade member 31, and also changes at least a part of the direction of flow of wind blown out from the blade member 31 so that the wind is blown out of one of the openings of the cylindrical part 48.SELECTED DRAWING: Figure 5

Description

The present invention relates to an environmental test apparatus that forms a desired environment inside a test room.

The environmental test apparatus has a test chamber, and can artificially create a predetermined environment such as a temperature environment (for example, high temperature or low temperature) or a humidity environment (for example, high humidity or low humidity) in the test chamber. It is a thing.

Some environmental test equipment has an air conditioner and a test room. Here, the air-conditioning unit is a portion in which air-conditioning equipment such as a heater and a cooler is built, and the test room is a space in which a specimen (test object) is arranged.
Some environmental test devices are provided with a blower, and the blower circulates air between the air-conditioning unit and the test room to adjust the environment in the test room to a desired environment.

Japanese Unexamined Patent Publication No. 2014-66593

When conducting an environmental test, it may be desired to blow air directly onto the specimen to bring the temperature of the specimen to the test temperature within a short period of time.
On the other hand, for example, when the specimen is large, if air is blown directly onto the specimen, temperature variation may occur on the surface of the specimen. In preparation for such a situation, it may be desirable to wrap the circumference of the specimen with air adjusted to a predetermined temperature or the like.
Further, as a general performance required for an environmental test apparatus, it is required that the temperature variation in the test chamber is small.

If it is desired to blow air directly onto the specimen, it may be desirable to blow the air straight from the blower toward the center of the test chamber.
On the other hand, if it is desired to wrap the surroundings of the specimen with air adjusted to a predetermined temperature or the like, or if it is desired to reduce the temperature variation in the article placement room, the air blown from the blower to the test room is blown to some extent. Sometimes it is better to spread it.
An object of the present invention is to provide an environmental test apparatus capable of meeting the above-mentioned requirements, and to determine the ratio of the blown air volume blown straight toward the test room to the air volume in the diffusion direction. The subject is to develop an environmental test device that can be changed.

Another object of the present invention is to develop an environmental test apparatus provided with a unique blower and which is a basic form for solving the above-mentioned problems.

An aspect for solving the above-mentioned problems is an environment in which a test room in which a specimen is installed, an air conditioning means, and a blower are provided, and air adjusted by the air conditioning means is blown into the test room by the blower. The blower is a test device, and the blower has a blade member, a wind direction changing member, and a rotating shaft. The blade member applies centrifugal force to the air taken in by rotating to apply centrifugal force to the rotating shaft. A centrifugal rotary vane that blows out the air in a direction intersecting the axial direction, the wind direction changing member has a tubular portion that opens at both ends, and the tubular portion is around the vane member. It is possible to cover at least a part, and the tubular portion changes the flow direction of a part or all of the air blown out from the blade member, and the air is blown out from one opening of the tubular portion. It is an environmental test apparatus characterized in that it is used.

The blower adopted by the environmental test apparatus of this embodiment has a blade member similar to a blade member such as a sirocco fan. That is, the blade member used in the environmental test apparatus of this embodiment is a centrifugal rotary blade that applies a centrifugal force to the intake air by rotating and blows out in the outward direction (direction intersecting the rotation axis). Is.
The blower of this embodiment has a wind direction changing member as a characteristic configuration. The wind direction changing member has a tubular portion that opens at both ends, and the tubular portion may cover at least a part of the periphery of the blade member.
Therefore, at least a part of the air blown out by the blade member cannot be diffused because it is blocked by the cylinder portion, and the flow direction changes and flows along the wall surface of the cylinder portion, and is blown out from the tip of the cylinder portion. Will be done.
In the environmental test apparatus of this embodiment, at least a part of the air blown out from the blade member in the outward diffusion direction is forcibly directed in the axial direction by the wind direction changing member and blown out from one opening of the cylinder portion.
Therefore, the ratio of the blown air volume blown in the straight direction and the air volume in the diffusion direction can be adjusted by adding some change.

For example, by changing the rotation speed of the blower, it may be possible to adjust the ratio of the blown air volume blown in the straight direction to the air volume in the diffusion direction.

In the above aspect, it is desirable that the wind direction changing member can move in the axial direction.

When the wind direction changing member is moved in the axial direction, the positional relationship between the blade member and the cylinder portion changes, and the ratio of the blown air volume blown straight toward the test chamber and the air volume in the diffusion direction changes.

In each of the above aspects, the position and / or form of the wind direction changing member can be changed, and a part or all of the blade member is exposed from the cylinder portion, and / or a part or a part of the blade member. It is desirable that all of them can be seen from the peripheral side of the tubular portion.

By setting "a state in which a part or all of the blade member is exposed from the cylinder portion", the cylinder portion does not exist around a part or all of the blade member, and the air blown by the blade member is generated by the cylinder portion. It is blown out in the circumferential direction (the direction that intersects the axial direction of the rotation axis) from the part where there is no.
Therefore, by changing the exposure amount of the blade member, the ratio of the blown air amount blown straight toward the test chamber and the air blown out in the diffusion direction can be adjusted.
The same applies to "a state in which a part or all of the blade member can be seen from the peripheral side of the cylinder portion", and there is no obstacle around a part or all of the blade member, and the air blown by the blade member. Is blown out from the visible part.

In each of the above aspects, it is desirable that the tubular portion has a bottom portion that narrows the other opening of the tubular portion.

According to this aspect, the air blown from the blade member in the direction of diffusing outward can be efficiently directed in the straight direction toward the test room.

In each of the above aspects, it is desirable that the tubular portion is provided with an opening at the peripheral portion and the area of the opening can be changed.

By changing the area of the opening, the amount of air blown out in the diffusion direction can be changed.

In the above aspect, it is desirable that the blower is installed so as to be located at the center of the wall surface of the test room.

The "central part" is a concept that includes not only the "central part" but also its surroundings. Specifically, it refers to a state in which there is a gap between the blower outlet and the ceiling, bottom, and side wall of the test room.
According to this aspect, since there are spaces above and below and to the left and right of the blower, it is easy to diffuse the air blown out from the blower.

In each of the above aspects, it is desirable to have an operating means for moving the tubular portion.

According to this aspect, the position of the tubular portion can be changed by operating from the outside, and the ratio of the blown air volume blown straight toward the test room and the air blown out in the diffusion direction can be changed.

According to the environmental test apparatus of the present invention, the ratio of the air volume blown out in the straight direction toward the test room and the air volume blown out in the diffusion direction can be changed.

It is sectional drawing of the environmental test apparatus of embodiment of this invention. FIG. 1 is a cross-sectional view taken along the line AA of FIG. It is a perspective view of the blower adopted in the environmental test apparatus of FIG. (A) is a perspective view of a blade member of a blower used in the environmental test apparatus of FIG. 1 observed from the front side, and (b) is a perspective view of the blade member observed from the back surface side. It is a cross-sectional view conceptually showing the vicinity of the blower of the environmental test apparatus of FIG. The case where the number is increased is shown, and (b) shows the case where the wind direction changing member is moved to the test room side to increase the ratio of the air volume in the diffusion direction. It is sectional drawing which conceptually showed the vicinity of the blower of the environmental test apparatus in another embodiment of this invention, (a) is moving the wind direction changing member to the air-conditioning part side, and moving straight toward the test room. The case where the air volume to be blown is increased is shown, and (b) shows the case where the wind direction changing member is moved to the test room side to increase the ratio of the air volume in the diffusion direction. It is sectional drawing which conceptually showed the vicinity of the blower of the environmental test apparatus in still another embodiment of this invention, (a) is moving the wind direction changing member to the air-conditioning part side, and going straight toward the test room. (B) shows a case where the air volume to be blown to is increased, and (b) shows a case where the wind direction changing member is moved to the test room side to increase the ratio of the air volume in the diffusion direction. It is sectional drawing which conceptually showed the vicinity of the blower of the environmental test apparatus in still another embodiment of this invention, (a) is the opening of the side surface of a cylinder part, and blows straight toward the test room. The case where the air volume is increased is shown, and (b) shows the case where the opening on the side surface of the cylinder is opened to increase the ratio of the air volume in the diffusion direction. The wind direction changing member of the blower shown in FIG. 8 is shown, (a) is an exploded perspective view thereof, (b) is a perspective view thereof, and a state in which a side opening is closed is shown, and (c) is a perspective view thereof. It shows a state where the side opening is opened. It is sectional drawing which conceptually showed the vicinity of the blower of the environmental test apparatus in still another embodiment of this invention, (a) is the opening of the side surface of a cylinder part, and blows straight toward the test room. The case where the air volume is increased is shown, and (b) shows the case where the opening on the side surface of the cylinder is opened to increase the ratio of the air volume in the diffusion direction.

Hereinafter, the environmental test apparatus 1 according to the embodiment of the present invention will be described.
As shown in FIG. 1, the environmental test apparatus 1 of the present embodiment has a housing 3 formed of a heat insulating wall 2. An opening 5 is provided on the front surface of the housing 3, and a door 6 is provided in the opening 5. Inside the housing 3, there is a space that functions as a test room 8.

In the present embodiment, the heat insulating tank 10 is formed by the housing 3 and the door 6. A partition wall (partition) 11 is provided inside the heat insulating tank 10, and the inside of the heat insulating tank 10 is largely divided into a test chamber 8 and an air conditioner 15 by the partition wall 11.
The partition wall 11 is provided with intake openings 16 and 17 near the upper and lower ends, that is, the upper and lower side portions of the partition wall 11.
Further, there is a ventilation opening 20 in the center of the partition wall 11.

The environmental test device 1 has an air conditioner (air conditioner means) 22.
The air conditioner 22 includes a humidifier 23, a cooling device, and a heater 26.
The cooling device has coolers 25a and 25b which are evaporators. The cooling device of the present embodiment has a configuration in which the downstream side of the condenser (not shown) is branched and two coolers 25a and 25b are connected in parallel to supply a refrigerant to each of them.
The heating heater 26 is an electric heater and is formed in a substantially annular shape. The humidifying device 23 is composed of a humidifying dish 27 for storing water and a humidifying heater 28.
In the present embodiment, the humidifying dish 27, the humidifying heater 28, the coolers 25a and 25b, and the heating heater 26 are built in the air conditioning unit 15.

In the present embodiment, the blower 30 is arranged at a position corresponding to the center of the partition wall 11.
Hereinafter, the blower 30 will be described. In the following description, the test room 8 side is referred to as the front, and the air conditioning unit 15 side is referred to as the rear. With reference to the blowing direction, the suction side is the rear and the blow side is the front.
As shown in FIGS. 3 and 4, the blower 30 is composed of a blade member 31, a motor 32, and a wind direction changing member 33.

The blade member 31 has substantially the same structure as the impeller of a known centrifugal blower. Similar to the multi-blade blades of a known centrifugal blower, the blade member 31 rotates around the rotation shaft 40 to apply a centrifugal force to the intake air and blows out in a direction intersecting the rotation shaft 40. It is a rotary blade of the formula.
Hereinafter, the "direction intersecting the rotation axis 40" may be referred to as an "outward direction". That is, the blade member 31 is a centrifugal rotary blade that blows out outward by applying a centrifugal force to the air taken in by rotating.

The blade member 31 used in the present embodiment is a multi-blade-shaped blade in which a plurality of blade piece members 36 are provided on a plate (hereinafter referred to as a sealing plate 35), and is a centrifugal rotary blade.
The sealing plate 35 is a circular plate, which has substantially no ventilation opening and is not breathable. The sealing plate 35 has a function of preventing air from being sucked from the test chamber 8 side.

The wing piece member 36 is a quadrangular plate. The blade piece member 36 used in this embodiment has a flat plate shape. The blade member 31 has a structure similar to a plate fan, and as shown in FIG. 4, the blade piece member 36 faces toward the center of the sealing plate 35.
The structure of the blade member 31 is not limited to a structure similar to a plate fan, and the blade piece member 36 may form a curved surface like, for example, a sirocco fan. Further, the posture may be inclined in the direction opposite to the rotation direction like a turbo fan.

As shown in FIG. 5, the wind direction changing member 33 is a cylinder that penetrates the front and rear and covers the periphery. That is, the wind direction changing member 33 has a tubular portion 48, a blowout side opening 55, and a suction side opening 56.
The opening diameter of the blowout side opening 55 is sufficiently larger than the outer diameter of the blade member 31. On the other hand, the opening diameter of the suction side opening 56 is slightly larger than the outer diameter of the blade member 31.
As described above, in the present embodiment, the inner diameter of the suction side opening 56 is smaller than the inner diameter of the blowout side opening 55. Therefore, the tubular portion 48 is composed of a parallel region A which is a cylindrical region having a substantially constant diameter, and a bottom portion 38 whose diameter gradually decreases. In the present embodiment, the external shape of the wind direction changing member 33 is a bell shape. The inner peripheral surface of the bottom 38 is arcuate.
The wind direction changing member 33 is provided with an operating rod 45. For the sake of drawing, the operation rod 45 is omitted in FIG.

The wind direction changing member 33 covers the outer circumference of the blade member 31 as shown in FIGS. 3 and 5. That is, a part or all of the blade member 31 is housed in the cavity of the wind direction changing member 33.
Further, the wind direction changing member 33 is movable in the axial direction.

When the blade member 31 of the blower 30 is rotated by the motor 32, the air is urged in the centrifugal direction (diffusion direction, radiation direction) by the blade piece member 36. That is, air is blown out in a direction intersecting the rotation axis 40.

As described above, the blower 30 used in the present embodiment has a wind direction changing member 33 (cylinder portion 48) that covers the blade member 31.
When the tubular portion 48 of the wind direction changing member 33 is in a positional relationship that covers most of the periphery of the blade member 31 as shown in FIG. 5A, the blowing air generated by the blade member 31 in the centrifugal direction changes the wind direction. It is prevented from colliding with the inner wall of the member 33 and diffusing the blast in the circumferential direction. The blast flows along the inner wall of the tubular portion 48. In particular, since the inner peripheral surface of the bottom 38 of the wind direction changing member 33 used in the present embodiment is arcuate, the air blown out in the diffusion direction caused by the blade member 31 smoothly changes the direction in the forward direction. Therefore, the blown air generated by the blade member 31 flows along the inner wall of the wind direction changing member 33 and is blown out from the blowout side opening 55 of the wind direction changing member 33.
That is, when the tubular portion 48 of the wind direction changing member 33 is in a positional relationship that covers most of the periphery of the blade member 31 as shown in FIG. 5A, the blown air is blown out linearly.

On the other hand, as shown in FIG. 5B, the wind direction changing member 33 moves forward, and the wind direction changing member 33 moves to a position where a part of the blade member 31 is exposed from the tubular portion 48 of the wind direction changing member 33. If there is, the blown air generated by the blade member 31 is blown out in the circumferential direction from the portion where the tubular portion 48 is not provided.
If the wind direction changing member 33 is located at a position where all of the blade members 31 are exposed from the tubular portion 48 of the wind direction changing member 33, all the blown air generated by the blade member 31 is blown out in the diffusion direction.

Next, the positional relationship of each member constituting the environmental test apparatus 1 will be described.
In the present embodiment, the blower 30 is attached to the heat insulating tank 10 so as to be located at the center of the partition wall 11 described above.
In the present embodiment, the blower 30 is installed at the center of the partition wall (partition) 11, but the position of the blower 30 does not have a great influence even if it is slightly deviated from the center.

The two coolers 25a and 25b are located above and below the blower 30 as shown in FIGS. 1 and 2.
The heating heater 26 is provided at a position surrounding the intake side of the blower 30.
The humidifying plate 27 is installed below the air conditioning unit 15.
Further, a temperature sensor 52 and a humidity sensor 53 are provided in the test chamber 8 in the vicinity of the ventilation opening 20. The positions of the temperature sensor 52 and the humidity sensor 53 are arbitrary and are not limited to the vicinity of the ventilation opening 20.

The blower 30 is installed in the middle portion of the partition wall 11 as shown in FIGS. 1 and 2.
That is, the blade member 31 of the blower 30 is located at a position corresponding to the blower opening 20 provided in the partition wall 11, and the wind direction changing member 33 covers the periphery of the blade member 31 at that position.
The motor 32 is outside the heat insulating tank 10, and the motor 32 and the blade member 31 are connected by a shaft 57.
The operation rod 45 penetrates the air conditioning unit 15 and projects to the outside of the heat insulating tank 10.
Therefore, by moving the operation rod 45 in the front-rear direction from the outside manually or by power, the wind direction changing member 33 moves in the front-rear direction in the housing 3, and the relative positional relationship between the wind direction changing member 33 and the blade member 31. Changes. Therefore, in the environmental test apparatus 1 of the present embodiment, the wind direction changing member 33 can be moved in the front-rear direction from the outside with the door 6 closed, and the air flow in the test chamber 8 can be changed.

Next, the function of the environmental test apparatus 1 of the present embodiment will be described.
In the environmental test apparatus 1 of the present embodiment, when the blower 30 is started, air circulates between the air conditioning unit 15 and the test chamber 8, and the temperature and humidity in the test chamber 8 are adjusted to a desired environment.
When the blower 30 is started, the air in the test chamber 8 is introduced into the air conditioning unit 15 from the upper and lower intake openings 16 and 17. As a result, the air-conditioning unit 15 is in a ventilation state, air comes into contact with the air-conditioning device 22, heat exchange and humidity adjustment are performed, and the air is sucked into the blower 30 as described later.
Then, air after adjusting the temperature and humidity is blown into the test chamber 8 from the tip of the blower 30. That is, air is blown from the central portion of the partition wall 11 toward the test chamber 8.
When the environmental test device 1 is used, the blower 30 is operated, and the air conditioner 22 is controlled so that the detected values of the temperature sensor 52 and the humidity sensor 53 approach the temperature and humidity of the set environment.

Hereinafter, the blower 30 will be focused on, and the functions of the blower 30 will be described.
When the blower 30 is started and the blade member 31 is rotated, a centrifugal force acts on the air inside, and the air is urged to move to the surroundings. As a result, the central portion of the blade member 31 tends to have a negative pressure.
Here, in the present embodiment, the blade member 31 is provided with a sealing plate 35, and the sealing plate 35 is arranged on the test chamber 8 side. Therefore, the space between the test chamber 8 and the central portion side of the blade member 31 is blocked by the sealing plate 35, and there is no inflow of air from the test chamber 8 side to the central portion side of the blade member 31.
As a result, the blower 30 is supplied with air only from the air conditioning unit 15 side. That is, the blower 30 sucks air from the air conditioning unit 15 side and blows it out to the test chamber 8 side.

For example, when it is desired to blow the wind directly from the blower 30 to the specimen, the operation rod 45 is operated to retract the wind direction changing member 33 as shown in FIG. 5A, and most of the blade members 31 are retracted. The circumference of the cylinder is covered with the cylinder 48. As a result, the blown air having the vector toward the outside generated by the blade member 31 collides with the inner wall of the wind direction changing member 33, is prevented from diffusing in the circumferential direction, changes the direction, and is along the inner wall of the wind direction changing member 33. The flow is blown into the test chamber 8 from the blowout side opening 55 at the tip of the wind direction changing member 33.
Therefore, all the blown air generated by the blade member 31 is blown out to the test chamber 8 from the blowout side opening 55 of the wind direction changing member 33, and is directly applied to, for example, the specimen.

On the contrary, when it is desired to cover the circumference of the specimen with air whose temperature or the like is adjusted, the tubular portion 48 of the wind direction changing member 33 is advanced as shown in FIG. 5B, and the wind direction changing member 33 to the blade member 31 A part of the motor 32 side is exposed.
As a result, of the wind generated by the blade member 31, the air having a vector toward the outside is blown out from the portion of the wind direction changing member 33 where the tubular portion 48 does not exist, and flows along the partition wall 11, for example.
On the other hand, in the portion of the blade member 31 covered by the tubular portion 48 of the wind direction changing member 33, as described above, the blower collides with the inner wall of the wind direction changing member 33 and is prevented from diffusing in the circumferential direction. It changes direction, flows along the inner wall of the wind direction changing member 33, and is blown out to the test chamber 8 from the blowout side opening 55 at the tip of the wind direction changing member 33.
Therefore, by changing the position of the wind direction changing member 33, the ratio of the blown air volume blown in the straight direction toward the test chamber 8 and the air volume in the diffusion direction can be changed.

Next, other embodiments of the present invention will be described. Of the following embodiments, the same constituent members as those in the above-described embodiment are assigned the same numbers, so that duplicate description will be omitted.
In the blower 60 used in the environmental test apparatus 50 shown in FIG. 6, the wind direction changing member 61 has a parallel cylindrical shape and does not have a bottom.
For example, when it is desired to blow the wind directly from the blower 60 to the specimen, the operation rod 45 is operated to retract the wind direction changing member 61 and suck the wind direction changing member 61 as shown in FIG. 6A. The side opening 56 is pressed against the partition wall 11 to close the suction side opening 56.
As a result, the blown air generated by the blade member 31 collides with the inner wall of the wind direction changing member 61, is prevented from diffusing in the circumferential direction, changes the direction, and flows along the inner wall of the wind direction changing member 61, and the wind direction changing member 61 It is blown out to the test chamber 8 from the blowout side opening 55 at the tip.

On the contrary, when it is desired to cover the periphery of the specimen with air whose temperature or the like is adjusted, the wind direction changing member 61 is advanced as shown in FIG. 6B as in the above embodiment, and the wind direction changing member 61 is moved forward. A part of the blade member 31 on the motor 32 side is exposed apart from the partition wall 11.
As a result, among the wind generated by the blade member 31, the air having a vector toward the outside is blown out from the portion where the wind direction changing member 61 does not exist, and flows along the partition wall 11, for example.
On the other hand, in the portion of the blade member 31 covered by the wind direction changing member 61, the blown air is blown out to the test chamber 8 from the blowout side opening 55 at the tip of the wind direction changing member 61.

FIG. 7 shows an example in which the shape of the wind direction changing member 58 is tapered so that the opening diameter changes as a whole.

FIG. 8 shows the amount of blown air blown straight toward the test chamber 8 and the amount of air blown in the diffusion direction by providing an opening 62 at the peripheral portion of the wind direction changing member 65 and changing the opening area of the opening 62. This is an example of a configuration in which the ratio of the above is changed.
That is, the blower 67 used in the environmental test apparatus 66 shown in FIG. 8 is provided with an opening 62 at the peripheral portion of the wind direction changing member 65. Then, there is a sealing member 78 in the opening 62 portion, and the opening area can be increased or decreased.
When the opening 62 is open, part or all of the blade member 31 can be seen from the circumferential side of the wind direction changing member 65. That is, it is in a state where ventilation is possible.
When the opening area of the opening 62 is small, the amount of air blown in the diffusion direction is small, and when the opening area is large, the amount of air blown in the diffusion direction is large.

FIG. 9 shows an example of a wind direction changing member capable of changing the opening area.
The wind direction changing member 70 shown in FIG. 9 is composed of a fixed side cylinder 71 and a movable side cylinder 72.
A quadrangular opening 73 is provided on the side surface of the fixed side cylinder 71.
A quadrangular opening 75 is provided on the side surface of the movable side cylinder 72.

The wind direction changing member 70 is formed by rotatably mounting the movable side cylinder 72 on the outside of the fixed side cylinder 71.
The movable side cylinder 72 is rotatable with respect to the fixed side cylinder 71.
Then, as shown in FIG. 9B, when the position of the opening 75 on the side surface of the movable side cylinder 72 and the position of the opening 73 on the side surface of the fixed side cylinder 71 do not match, the opening 73 on the side surface of the fixed side cylinder 71 is closed. It will be in a state of being.

On the other hand, as shown in FIG. 9C, when the movable side cylinder 72 is in another constant rotational posture, the position of the opening 75 on the side surface of the movable side cylinder 72 and the position of the opening 73 on the side surface of the fixed side cylinder 71 are ,Match. As a result, the opening 73 on the side surface of the fixed side cylinder 71 is opened, and the inside and outside of the wind direction changing member 70 communicate with each other.
Then, the opening ratio of the opening 73 can be changed depending on the rotational posture of the movable side cylinder 72.

The environmental test apparatus 80 shown in FIG. 10 has an opening 62 provided at the peripheral portion of the wind direction changing member 65, and a damper 81 provided at the opening 62. In the environmental test apparatus 80 shown in FIG. 10, the ratio of the blown air volume blown straight toward the test chamber 8 and the blown air volume in the diffusion direction can be changed by changing the opening area of the damper 81. can.

In the embodiment described above, as described above, the intake openings 16 and 17 are provided in the vicinity of the upper and lower sides of the partition wall 11, and the two coolers 25a and 25b are provided between the intake openings 16 and 17 and the blower 30. However, intake openings may be provided in the vicinity of the left and right side portions of the partition wall 11, and two coolers 25a and 25b may be arranged between the intake openings and the blower 30.
Further, intake openings may be provided in the vicinity of the upper and lower side portions of the partition wall 11 and in the vicinity of the left and right side portions, and coolers may be arranged in an annular shape around the intake side of the blower 30.

The shape of the intake opening is arbitrary and may be composed of a large number of small holes. Further, a filter or the like may be attached.

In the embodiment described above, the heater 26 is installed at a position surrounding the blower 30, but like the coolers 25a and 25b, it is divided into a plurality of heaters 26 and provided between the intake openings 16 and 17 and the blower 30. You may.

It is recommended that the blower 30 be in a position where it can blow air toward the center of the test chamber 8, but the position of the blower 30 is not limited and may be another position.

In the above-described embodiment, only one blower 30 is installed on the partition wall 11, but a plurality of blowers 30 may be installed.

1,50, 66, 80 Environmental test equipment 6 Door 8 Test room 22 Air conditioning equipment (air conditioning means)
30, 60, 67 Blower 31 Blade member 32 Motor 33, 58, 61, 65, 70 Wind direction changing member 35 Sealing plate 36 Wing piece member 38 Bottom 40 Rotating shaft 45 Operating rod 48 Cylinder 62 Opening 73 Opening 75 Opening

Claims (7)

An environmental test apparatus having a test room in which a specimen is installed, an air-conditioning means, and a blower, and blowing air adjusted by the air-conditioning means into the test room by the blower.
The blower has a blade member, a wind direction changing member, and a rotating shaft.
The blade member is a centrifugal type rotary blade that applies centrifugal force to the intake air by rotating and blows out the air in a direction intersecting the axial direction of the rotation shaft.
The wind direction changing member has a tubular portion that opens at both ends.
The tubular portion can cover at least a part of the periphery of the blade member, and the tubular portion can cover at least a part thereof.
An environmental test apparatus characterized in that the flow direction of a part or all of the air blown out from the blade member is changed by the tubular portion, and the air is blown out from one opening of the tubular portion. The environmental test apparatus according to claim 1, wherein the wind direction changing member is movable in the axial direction. The position and / or form of the wind direction changing member can be changed, and a part or all of the blade member is exposed from the cylinder portion, and / or a part or all of the blade member of the cylinder portion. The environmental test apparatus according to claim 1 or 2, wherein the environmental test apparatus can be visually observable from the peripheral side. The environmental test apparatus according to any one of claims 1 to 3, wherein the tubular portion has a bottom portion that narrows the other opening of the tubular portion. The environmental test apparatus according to any one of claims 1 to 4, wherein the tubular portion is provided with an opening at a peripheral portion and the area of the opening can be changed. The environmental test apparatus according to any one of claims 1 to 5, wherein the blower is installed so as to be located at a central portion of a wall surface of the test chamber. The environmental test apparatus according to any one of claims 1 to 6, further comprising an operating means for moving the tubular portion.

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