JP7450438B2 - environmental test equipment - Google Patents

Description

The present invention relates to an environmental test device that creates a desired environment inside a test chamber.

The environmental test device has a test chamber and can artificially create a predetermined environment such as a temperature environment (e.g. high temperature or low temperature) or a humidity environment (e.g. high humidity or low humidity) in the test chamber. It is something.

Some environmental test equipment has an air conditioning section and a test chamber. Here, the air conditioning section is a part in which air conditioning equipment such as a heater and a cooler is built in, and the test chamber is a space in which a specimen (under test object) is placed.
Some environmental test devices include a blower that circulates air between the air conditioning section and the test chamber to adjust the environment within the test chamber to a desired environment.

JP2014-66593A

When performing an environmental test, there are cases where it is desired to bring the temperature of the specimen to the test temperature within a short time by blowing air directly onto the specimen.
On the other hand, if the specimen is large, for example, if air is blown directly onto the specimen, temperature variations may occur on the surface of the specimen. In preparation for such a situation, it may be desirable to surround the specimen with air adjusted to a predetermined temperature or the like.
Further, as a general performance required for an environmental test device, it is required that temperature variations within the test chamber be small.

When it is desired to blow air directly onto the specimen, it may be desirable to have the blower blow the air in a straight direction toward the center of the test chamber.
On the other hand, if you want to surround the specimen with air adjusted to a predetermined temperature, or if you want to reduce temperature variations in the room where the items are placed, you can reduce the amount of air blown into the test room from the blower. Sometimes it's better to spread it out.
The purpose of the present invention is to provide an environmental testing device that can meet the above-mentioned requirements. The objective is to develop an environmental testing device that can be changed.

Another object of the present invention is to develop an environmental testing device that is equipped with a unique blower and serves as a basic form for solving the above-mentioned problems.

A mode for solving the above problems is an environment that includes a test chamber in which a specimen is installed, an air conditioning means, and a blower, and in which air conditioned by the air conditioning means is blown into the test chamber by the blower. In the test device, the blower includes a blade member, a wind direction changing member, and a rotating shaft, and the blade member rotates to apply a centrifugal force to the intake air, and the rotating shaft rotates. The air direction changing member is a centrifugal rotary blade that blows out the air in a direction crossing the axial direction, and the wind direction changing member has a cylindrical portion that is open at both ends, and the cylindrical portion has a cylindrical portion around the blade member. It is possible to cover at least a portion of the air, and the flow direction of part or all of the air blown out from the blade member is changed by the cylindrical portion, and the air is blown out from one opening of the cylindrical portion. This is an environmental testing device characterized by:
A specific embodiment for solving the above problems includes a test chamber in which a specimen is installed, an air conditioning means, and an air blower, and the air conditioned by the air conditioning means is blown into the test chamber by the blower. The blower includes a blade member, a wind direction changing member, and a rotating shaft, and the blade member applies centrifugal force to the intake air by rotating, and The air direction changing member is a centrifugal rotary blade that blows out the air in a direction intersecting the axial direction of the shaft, and the wind direction changing member has a cylindrical portion that is open at both ends, and one end of the cylindrical portion is connected to the blade. The cylindrical portion serves as a suction side opening located on the suction side of the member, and the other end of the cylindrical portion serves as a blowout side opening, and the cylindrical portion is capable of covering at least a part of the periphery of the blade member, and the cylindrical portion is capable of covering at least a part of the periphery of the blade member. At least a part of the periphery of the member can be exposed in the test chamber, and the flow direction of part or all of the air blown out from the blade member in the intersecting direction is changed by the cylinder part. The flow direction is changed so that the air is blown out from the blow-out side opening, and the air is blown out from the blade member exposed from the cylindrical portion in a direction crossing the axial direction. The environmental testing device is characterized in that it has an operating means for changing the position and/or form of the cylindrical portion .

The blower employed in the environmental test device of this embodiment has a blade member similar to that of a sirocco fan or the like. That is, the blade member employed in the environmental test device of this embodiment is a centrifugal rotary blade that applies centrifugal force to the intake air by rotating and blows it out in the outward direction (direction that intersects with the rotation axis). It is.
The blower of this embodiment has a wind direction changing member as a characteristic configuration. The wind direction changing member may have a cylindrical portion that is open at both ends, and at least a portion of the periphery of the blade member may be covered by the cylindrical portion.
Therefore, at least a part of the air blown outward by the blade member is blocked by the cylinder and cannot be diffused, and the flow direction changes and flows along the wall of the cylinder, and is blown out from the tip of the cylinder. be done.
In the environmental test device of this aspect, at least a portion of the air blown out from the blade member in the direction of outward diffusion is forcibly oriented in the axial direction by the wind direction changing member and blown out from one opening of the cylindrical portion.
Therefore, by making some changes, it is possible to adjust the ratio of the amount of air blown in the straight direction and the amount of air blown in the diffusion direction.

For example, by changing the rotational speed of the blower, it is possible to adjust the ratio of the amount of air blown in the straight direction to the amount of air blown in the diffusion direction.

In the above aspect, it is desirable that the wind direction changing member is movable 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 cylindrical portion changes, and the ratio between the amount of air blown in the straight direction toward the test chamber and the amount of air in the diffusion direction changes.

In each of the above aspects, the wind direction changing member is capable of changing its position and/or shape, and a part or all of the blade member is exposed from the cylindrical part, and/or a part or the whole of the blade member is exposed from the cylinder part. It is desirable that all of the parts can be visually observed from the circumferential side of the cylindrical part.

By setting "a state in which part or all of the blade member is exposed from the cylindrical part", a state in which the cylindrical part does not exist around part or all of the blade member, and the air generated by the blade member is transferred to the cylindrical part. It is blown out in the circumferential direction (direction that intersects with the axial direction of the rotating shaft) from the part where there is no.
Therefore, by changing the amount of exposure of the blade member, it is possible to adjust the ratio of the amount of air blown in the straight direction toward the test chamber and the amount of air blown out in the diffusion direction.
The same applies to "a state in which part or all of the blade member is visible from the circumferential side of the cylindrical part", and there is no obstacle around part or all of the blade member, and the air is blown by the blade member. is blown outward from the visible part.

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

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

In each of the above-described aspects, it is desirable that the cylindrical portion is provided with an opening in its circumferential portion, and that the area of the opening can be changed.
An embodiment having this configuration is an environmental test device that includes a test chamber in which a specimen is installed, an air conditioning means, and a blower, and blows air conditioned by the air conditioning means into the test chamber with the blower. The blower includes a blade member, a wind direction changing member, and a rotating shaft, and the blade member rotates to apply a centrifugal force to the intake air, and the blade member applies centrifugal force to the intake air in the axial direction of the rotating shaft. The wind direction changing member is a centrifugal rotary blade that blows out the air in a direction crossing the airflow direction, and the wind direction changing member has a cylindrical part that is open at both ends, and one end of the cylindrical part is located on the intake side of the blade member. The other end of the cylindrical portion serves as a suction side opening, and the cylindrical portion is capable of covering at least a portion of the periphery of the blade member, and the cylindrical portion is capable of covering at least a part of the periphery of the blade member, and The flow direction of a part or all of the air blown toward the direction is changed by the cylindrical part, and the air whose flow direction has been changed is blown out from the blow-out side opening, and the cylindrical part is , an environmental test characterized in that an opening is provided in the peripheral part, a fixed side cylinder and a movable side cylinder are provided, and the area of the opening in the peripheral part can be changed by the movable side cylinder and the fixed side cylinder. It is a device.

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

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

"Central" is a concept that includes not only the "center" but also its surroundings. Specifically, it refers to a situation where there is a gap between the blower outlet and the ceiling, bottom, and side walls of the test chamber. According to this aspect, since there are spaces above and below the blower and on the left and right sides , it is easy to diffuse the air blown out from the blower.

In each of the above-described aspects, it is desirable to have an operating means for moving the cylinder portion.
An embodiment having this configuration is an environmental test device that includes a test chamber in which a specimen is installed, an air conditioning means, and a blower, and blows air conditioned by the air conditioning means into the test chamber with the blower. The blower includes a blade member, a wind direction changing member, and a rotating shaft, and the blade member rotates to apply a centrifugal force to the intake air, and the blade member applies centrifugal force to the intake air in the axial direction of the rotating shaft. The wind direction changing member is a centrifugal rotary blade that blows out the air in a direction crossing the airflow direction, and the wind direction changing member has a cylindrical part that is open at both ends, and one end of the cylindrical part is located on the intake side of the blade member. The other end of the cylindrical portion serves as a suction side opening, and the cylindrical portion is capable of covering at least a portion of the periphery of the blade member, and the cylindrical portion is capable of covering at least a part of the periphery of the blade member, and The flow direction of a part or all of the air blown toward the air is changed by the cylindrical portion, and the air whose flow direction has been changed is blown out from the blow-off side opening, and the air direction changing member is capable of changing the position and/or form, and is in a state where part or all of the blade member is exposed from the cylindrical part, and/or part or all of the blade member is visually visible from the circumferential side of the cylindrical part. The environmental testing apparatus is characterized in that it has an operating means for changing the position and/or form of the cylindrical part.

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

According to the environmental test device of the present invention, it is possible to change the ratio between the amount of air blown in the straight direction toward the test chamber and the amount of air blown in the diffusion direction.

FIG. 1 is a sectional view of an environmental test device according to an embodiment of the present invention. 2 is a sectional view taken along line AA in FIG. 1. FIG. FIG. 2 is a perspective view of a blower employed in the environmental test device of FIG. 1. FIG. (a) is a perspective view of a blade member of a blower employed in the environmental test device of FIG. 1 observed from the front side, and (b) is a perspective view of the blade member observed from the back side. 2 is a cross-sectional view conceptually showing the vicinity of the blower of the environmental test equipment in FIG. 1, in which (a) the wind direction changing member is moved to the air conditioning unit side and the amount of air blown in the straight direction toward the test room is changed; (b) shows the case where the air direction changing member is moved to the test chamber side and the proportion of air volume in the diffusion direction is increased. It is a sectional view conceptually showing the vicinity of the blower of the environmental test device in other embodiments of the present invention, in which (a) the wind direction changing member is moved toward the air conditioning unit side and is moved straight toward the test room. This shows the case where the amount of air blown is increased, and (b) shows the case where the air direction changing member is moved to the test chamber side and the proportion of the air amount in the diffusion direction is increased. It is a cross-sectional view conceptually showing the vicinity of the blower of the environmental test device in still another embodiment of the present invention, and (a) is a sectional view showing the direction in which the wind direction changing member is moved to the air conditioning unit side and the direction is straight toward the test room. (b) shows the case where the airflow direction change member is moved to the test room side and the proportion of the airflow in the diffusion direction is increased. It is a sectional view conceptually showing the vicinity of the blower of the environmental testing device in still another embodiment of the present invention, and (a) closes the opening on the side of the cylindrical part and blows air in a straight direction toward the test chamber. (b) shows the case where the opening on the side surface of the cylindrical portion is opened to increase the proportion 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 with the side opening closed, and (c) is a perspective view thereof. This shows the state where the side opening is open. It is a sectional view conceptually showing the vicinity of the blower of the environmental testing device in still another embodiment of the present invention, and (a) closes the opening on the side of the cylindrical part and blows air in a straight direction toward the test chamber. (b) shows the case where the opening on the side surface of the cylindrical portion is opened to increase the proportion of the air volume in the diffusion direction.

The environmental test device 1 according to the embodiment of the present invention will be further described below.
As shown in FIG. 1, the environmental test device 1 of this embodiment has a casing 3 formed of a heat insulating wall 2. As shown in FIG. There is an opening 5 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 chamber 8.

In this embodiment, a heat insulating tank 10 is formed by the casing 3 and the door 6. There is a partition wall (partition) 11 inside the heat insulating tank 10, and the partition wall 11 largely divides the inside of the heat insulating tank 10 into a test chamber 8 and an air conditioning section 15.
The partition wall 11 is provided with intake openings 16 and 17 at its upper and lower ends, that is, near the upper and lower sides of the partition wall 11 .
Further, in the center of the partition wall 11, there is a ventilation opening 20.

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

In this embodiment, the blower 30 is arranged at a position corresponding to the center of the partition wall 11.
The blower 30 will be explained below. In the following description, the test chamber 8 side will be referred to as the front, and the air conditioning unit 15 side will be referred to as the rear. Based on the air blowing direction, the suction side is at the rear, and the blowing side is at the front.
As shown in FIGS. 3 and 4, the blower 30 includes 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. The blade member 31, similar to the multi-blade blades of a known centrifugal blower, rotates around the rotating shaft 40 to apply a centrifugal force to the air taken in, and blows out the air in a direction intersecting the rotating shaft 40. It is a rotating blade of the formula.
Hereinafter, the "direction intersecting the rotating shaft 40" may be referred to as the "outward direction." That is, the blade member 31 is a centrifugal rotary blade that applies centrifugal force to the air taken in by rotating and blows the air outward.

The blade member 31 employed in this embodiment is a multi-blade-shaped blade in which a plurality of blade 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, has substantially no ventilation openings, and is not breathable. The sealing plate 35 has a function of preventing air from being sucked in from the test chamber 8 side.

The wing member 36 is a rectangular plate. The wing member 36 employed 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 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 that of a plate fan, and the blade member 36 may have a curved surface, for example, like a sirocco fan. Further, it may be inclined in a 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 is penetrated at the front and back and whose periphery is covered. That is, the wind direction changing member 33 has a cylindrical portion 48 , and has an outlet 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.
Thus, in this embodiment, the inner diameter of the suction side opening 56 is smaller than the inner diameter of the blowout side opening 55. Therefore, the cylindrical portion 48 includes a parallel region A, which is a cylindrical region having a substantially constant diameter, and a bottom portion 38, the diameter of which gradually decreases. In this embodiment, the external shape of the wind direction changing member 33 is bell-shaped. The inner peripheral surface of the bottom portion 38 is arcuate.
The wind direction changing member 33 is provided with an operating rod 45 . Note that the operating rod 45 is omitted in FIG. 3 for convenience of drawing.

The wind direction changing member 33 covers the outer periphery of the blade member 31, as shown in FIGS. 3 and 5. That is, the blade member 31 is partially or entirely accommodated within 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, radial direction) by the blade member 36. That is, air is blown out in a direction intersecting the rotating shaft 40.

As described above, the blower 30 employed in this embodiment includes the wind direction changing member 33 (cylindrical portion 48) that covers the blade member 31.
When the cylindrical portion 48 of the wind direction changing member 33 is positioned to cover most of the blade member 31 as shown in FIG. The blowing air collides with the inner wall of the member 33 and is prevented from spreading in the circumferential direction. The air flows along the inner wall of the cylindrical portion 48 . In particular, in the wind direction changing member 33 employed in this embodiment, the inner circumferential surface of the bottom portion 38 is arcuate, so that the air blown out in the diffusion direction caused by the blade member 31 smoothly changes its direction in the forward direction. Therefore, the air generated by the blade member 31 flows along the inner wall of the air direction changing member 33 and is blown out from the air outlet side opening 55 of the air direction changing member 33.
That is, when the cylindrical portion 48 of the wind direction changing member 33 is positioned to cover most of the blade member 31 as shown in FIG. 5(a), the air is blown out linearly.

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

Next, the positional relationship of each member constituting the environmental test apparatus 1 will be explained.
In this embodiment, the blower 30 is attached to the heat insulating tank 10 so as to be located in the center of the partition wall 11 described above.
In this embodiment, the blower 30 is installed at the center of the partition wall (partition) 11, but even if the position of the blower 30 is slightly shifted from the center, there is no major effect.

The two coolers 25a and 25b are located above and below the blower 30, as shown in FIGS. 1 and 2.
The heater 26 is provided at a position surrounding the intake side of the blower 30.
The humidifying tray 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 and near 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 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 ventilation opening 20 provided in the partition wall 11, and the wind direction changing member 33 covers the periphery of the blade member 31 at this position.
The motor 32 is located outside the heat insulating tank 10, and the motor 32 and the blade member 31 are connected by a shaft 57.
The operating rod 45 penetrates the air conditioning unit 15 and projects out of the heat insulating tank 10.
Therefore, by moving the operating rod 45 from the outside in the front-back direction manually or by power, the wind direction changing member 33 moves back and forth within 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 this embodiment, the air direction changing member 33 can be moved from the outside in the front and back direction with the door 6 closed to change the flow of air in the test chamber 8.

Next, the functions of the environmental test device 1 of this embodiment will be explained.
In the environmental test apparatus 1 of this 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, air in the test chamber 8 is introduced into the air conditioning section 15 through the upper and lower intake openings 16 and 17. As a result, the air conditioning unit 15 enters a ventilation state, and air comes into contact with the air conditioner 22 to perform heat exchange and humidity adjustment, and is sucked into the blower 30 as described later.
Then, air whose temperature and humidity have been adjusted is blown into the test chamber 8 from the tip of the blower 30. That is, air is blown out from the center of the partition wall 11 toward the test chamber 8.
When using the environmental test device 1, the blower 30 is operated and the air conditioner 22 is controlled so that the detected values of the temperature sensor 52 and humidity sensor 53 approach the temperature and humidity of the set environment.

Hereinafter, focusing on the blower 30, the functions of the blower 30 will be explained.
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 forced to move to the surroundings. As a result, the central portion of the blade member 31 tends to have a negative pressure.
Here, in this embodiment, a sealing plate 35 is provided on the blade member 31, and the sealing plate 35 is arranged on the test chamber 8 side. Therefore, the space between the test chamber 8 and the center side of the blade member 31 is blocked by the sealing plate 35, and no air flows from the test chamber 8 side to the center side of the blade member 31.
As a result, air is supplied to the blower 30 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, if you want to apply wind directly to the specimen from the blower 30, operate the operating rod 45 to move the wind direction changing member 33 backward as shown in FIG. is covered with a cylindrical portion 48. As a result, the air blown by the blade member 31 and having an outward vector collides with the inner wall of the wind direction changing member 33 and is prevented from diffusing in the circumferential direction, changing its direction and moving along the inner wall of the wind direction changing member 33. The air flows and is blown out into the test chamber 8 from the blowout side opening 55 at the tip of the wind direction changing member 33.
Therefore, all the air generated by the blade member 31 is blown into the test chamber 8 from the air outlet side opening 55 of the air direction changing member 33, and is directly applied to the specimen, for example.

On the other hand, if you want to cover the area around the specimen with air whose temperature etc. have been adjusted, move the cylindrical part 48 of the wind direction changing member 33 forward and remove the blade member 31 from the wind direction changing member 33, as shown in FIG. 5(b). A part of the motor 32 side is exposed.
As a result, out of the wind generated by the blade member 31, the air having an outward vector is blown out from the portion of the wind direction changing member 33 where the cylindrical portion 48 does not exist, and flows, for example, along the partition wall 11.
On the other hand, in the portion of the blade member 31 covered by the cylindrical portion 48 of the wind direction changing member 33, as described above, the blast of air collides with the inner wall of the wind direction changing member 33 and is prevented from spreading in the circumferential direction. The air changes direction, flows along the inner wall of the air direction changing member 33, and is blown out into the test chamber 8 from the air outlet side opening 55 at the tip of the air direction changing member 33.
Therefore, by changing the position of the wind direction changing member 33, it is possible to change the ratio of the amount of air blown in the straight direction toward the test chamber 8 and the amount of air blown in the diffusion direction.

Next, other embodiments of the present invention will be described. In the following embodiments, components that are the same as those in the above-described embodiments are designated by the same numbers, and redundant explanations will be omitted.
In the blower 60 employed 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, if you want to apply wind directly to the specimen from the blower 60, operate the operating rod 45 to move the wind direction changing member 61 backward as shown in FIG. The side opening 56 is pressed against the partition wall 11 to close the suction side opening 56.
As a result, the air blown by the blade member 31 collides with the inner wall of the wind direction changing member 61 and is prevented from diffusing in the circumferential direction and changes direction, flows along the inner wall of the wind direction changing member 61, and The air is blown into the test chamber 8 from the blow-out side opening 55 at the tip.

On the other hand, if you want to cover the area around the specimen with air whose temperature etc. have been adjusted, as in the embodiment described above, move the wind direction changing member 61 forward as shown in FIG. 6(b). A part of the blade member 31 on the motor 32 side is exposed away from the partition wall 11.
As a result, among the wind generated by the vane member 31, the air having an outward vector is blown out from the portion where the wind direction changing member 61 is not present, 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 air is blown into the test chamber 8 from the blowing side opening 55 at the tip of the wind direction changing member 61.

FIG. 7 shows an example in which the wind direction changing member 58 has a tapered shape so that the opening diameter changes overall.

FIG. 8 shows that by providing an opening 62 on the circumference of the wind direction changing member 65 and changing the opening area of the opening 62, the amount of air blown in the straight direction toward the test chamber 8 and the amount of air in the diffusion direction can be changed. This is an example of a configuration for changing the ratio of .
That is, in the blower 67 employed in the environmental test device 66 shown in FIG. 8, an opening 62 is provided around the wind direction changing member 65. A sealing member 78 is provided at the opening 62, and the opening area can be increased or decreased.
When the opening 62 is open, part or all of the blade member 31 is visible from the circumferential side of the wind direction changing member 65. In other words, ventilation is possible.
When the opening area of the opening 62 is small, the amount of air blown out in the diffusion direction is small, and when the opening area is large, the amount of air blown out in the diffusion direction is large.

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

The wind direction changing member 70 has a movable side tube 72 rotatably attached to the outside of a fixed side tube 71.
The movable side tube 72 is rotatable with respect to the fixed side tube 71.
As shown in FIG. 9(b), when the position of the opening 75 on the side surface of the movable side tube 72 and the position of the opening 73 on the side surface of the fixed side tube 71 are not aligned, the opening 73 on the side surface of the fixed side tube 71 is closed. The state will be as follows.

On the other hand, as shown in FIG. 9(c), when the movable side tube 72 is in another fixed rotational posture, the position of the opening 75 on the side surface of the movable side tube 72 and the position of the opening 73 on the side surface of the fixed side tube 71 are different. ,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 are communicated with each other.
The opening ratio of the opening 73 can be changed depending on the rotational attitude of the movable side cylinder 72.

The environmental test device 80 shown in FIG. 10 has an opening 62 provided around the wind direction changing member 65, and a damper 81 provided in the opening 62. In the environmental test apparatus 80 shown in FIG. 10, by changing the opening area of the damper 81, it is possible to change the ratio of the amount of air blown in the straight direction toward the test chamber 8 and the amount of air blown in the diffusion direction. can.

In the embodiment described above, the intake openings 16 and 17 are provided near the upper and lower sides of the partition wall 11, and the two coolers 25a and 25b are installed between the intake openings 16 and 17 and the blower 30. However, intake openings may be provided near the left and right sides of the partition wall 11, and the two coolers 25a and 25b may be arranged between each intake opening and the blower 30.
Furthermore, intake openings may be provided near the upper and lower sides of the partition wall 11 and near the left and right sides, respectively, and the cooler may be arranged in an annular manner 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 in a position surrounding the blower 30, but like the coolers 25a and 25b, it is divided into a plurality of parts and installed between the air intake openings 16, 17, etc. and the blower 30. You can.

Although it is recommended that the blower 30 be located at a position where it can blow air toward the center of the test chamber 8, the position of the blower 30 is not limited and may be at any other position.

In the embodiment described above, 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 member 38 Bottom portion 40 Rotating shaft 45 Operating rod 48 Cylindrical portion 62 Opening 73 Opening 75 Opening

Claims (9)

An environmental test device comprising a test chamber in which a specimen is installed, an air conditioning means, and a blower, and in which air conditioned by the air conditioning means is blown into the test chamber by the blower,
The blower includes a blade member, a wind direction changing member, and a rotating shaft,
The blade member is a centrifugal 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 cylindrical portion that is open at both ends,
One end of the cylindrical portion serves as a suction side opening located on the suction side of the blade member,
The other end of the cylindrical portion serves as a blowout side opening,
The cylindrical portion can cover at least a portion of the periphery of the blade member,
The flow direction of part or all of the air blown out from the blade member in the intersecting direction is changed by the cylinder part, and the air whose flow direction has been changed is blown out from the blowout side opening. It is a thing,
The position and/or shape of the wind direction changing member can be changed, and a part or all of the blade member is exposed from the cylindrical part, and/or a part or all of the blade member is exposed from the cylindrical part. It is possible to become visible from the circumferential side,
An environmental testing device characterized by having an operating means for changing the position and/or shape of the cylinder part. An environmental test device comprising a test chamber in which a specimen is installed, an air conditioning means, and a blower, and in which air conditioned by the air conditioning means is blown into the test chamber by the blower,
The blower includes a blade member, a wind direction changing member, and a rotating shaft,
The blade member is a centrifugal 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 cylindrical portion that is open at both ends,
One end of the cylindrical portion serves as a suction side opening located on the suction side of the blade member,
The other end of the cylindrical portion serves as a blowout side opening,
The cylindrical portion is capable of covering at least a portion of the periphery of the blade member, and is capable of exposing at least a portion of the periphery of the blade member into the test chamber,
The flow direction of part or all of the air blown out from the blade member in the intersecting direction is changed by the cylinder part, and the flow direction is changed and the air is blown out from the blowout side opening. Wind and wind blown out from the blade member exposed from the cylindrical portion in a direction intersecting the axial direction ,
An environmental testing device characterized by having an operating means for changing the position and/or shape of the cylinder part . An environmental test device comprising a test chamber in which a specimen is installed, an air conditioning means, and a blower, and in which air conditioned by the air conditioning means is blown into the test chamber by the blower,
The blower includes a blade member, a wind direction changing member, and a rotating shaft,
The blade member is a centrifugal 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 cylindrical portion that is open at both ends,
One end of the cylindrical portion serves as a suction side opening located on the suction side of the blade member,
The other end of the cylindrical portion serves as a blowout side opening,
The cylindrical portion can cover at least a portion of the periphery of the blade member,
The flow direction of part or all of the air blown out from the blade member in the intersecting direction is changed by the cylinder part, and the air whose flow direction has been changed is blown out from the blowout side opening. It is a thing,
The cylindrical part has an opening in the peripheral part, and has a fixed side cylinder and a movable side cylinder,
An environmental testing device characterized in that the area of the opening in the peripheral portion can be changed by the movable side tube and the fixed side tube. The environmental testing apparatus according to any one of claims 1 to 3, wherein the wind direction changing member is movable in the axial direction. The position and/or shape of the wind direction changing member can be changed, and a part or all of the blade member is exposed from the cylindrical part, and/or a part or all of the blade member is exposed from the cylindrical part. The environmental testing device according to any one of claims 2 to 4, wherein the environmental testing device can be made visible from the circumferential side. 6. The environmental testing device according to claim 1, wherein the cylindrical portion has a bottom portion that narrows the suction side opening. The environmental test device according to claim 1 or 2, wherein the cylinder portion has an opening provided at its circumference, and the area of the opening can be changed. The environmental test apparatus according to any one of claims 1 to 7, wherein the blower is installed so as to be located in a central part of a wall surface of the test chamber. 4. The environmental testing device according to claim 3, further comprising an operating means for changing the position and/or shape of the cylindrical portion.

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