JP7356323B2 - environmental test equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to an environmental testing device that performs testing by placing a test object in a predetermined environment.

2. Description of the Related Art Environmental testing devices are known as devices for testing the performance and durability of products, materials, and the like. One of the environmental test devices is a thermal shock test device as disclosed in Patent Document 1. The thermal shock test device disclosed in Patent Document 1 includes a high temperature exposure operation in which a gas adjusted to a high temperature is introduced into the test chamber and the test specimen is exposed to a high temperature atmosphere, and a gas adjusted to a low temperature is introduced into the test chamber. A thermal shock can be applied to the test object by sequentially performing two or more of the following: a low-temperature exposure operation in which the test object is exposed to a low-temperature atmosphere, and a room-temperature exposure operation in which the test object is maintained at room temperature.

Japanese Patent Application Publication No. 2000-88730

The environmental test device described in Patent Document 1 includes a cold storage device in a low-temperature chamber serving as a precooling chamber, and can store cold heat of cold air in the cold storage device during precooling operation. Therefore, when the test chamber is switched to low-temperature exposure operation, the temperature inside the test chamber can be quickly lowered to the desired temperature, making it possible to shorten the temperature return time. However, there is a need to shorten the time required for precooling and to further shorten the time required for temperature recovery in the test chamber. This also applies to the case where the technology of Patent Document 1 is applied and a heat storage device is disposed within the high temperature tank.

An object of the present invention is to provide an environmental test device that can shorten the time required for preheating or precooling, and also shortens the time required to return the temperature of the test chamber.

The environmental test apparatus of the present invention includes a test chamber in which a sample is placed, and a temperature-controlled room that supplies hot air or cold air to the test chamber. One or more metal molded bodies having a plurality of through holes are arranged in the temperature control chamber as a heat storage device or a cold storage device.

Since the metal molded body is provided with multiple through holes, there is less heat or cold accumulation in the metal molded body, and less heat and cold storage from the metal molded body, compared to when the metal molded body does not have multiple through holes. The rate of heat radiation or cooling is very fast. Therefore, by arranging a metal molded body having a plurality of through holes as a regenerator or regenerator in a temperature control chamber, the time required for preheating or precooling can be shortened, and the time required for temperature return of the test chamber can be shortened. Significant shortening is possible. The magnitude of the effect of using a metal molded body with multiple through holes depends on the angle between the direction of gas flow and the direction in which the through holes extend. Even if there are through holes, the effect will be greater than when a metal molded body without a plurality of through holes is used as a heat storage device or a cold storage device.

In the present invention, it is preferable that a plurality of metal molded bodies each having a plate shape are arranged in the temperature control chamber. Since each of the plurality of metal molded bodies is plate-shaped, the surface area per unit weight is increased, and the efficiency of heat storage or cold storage in the metal molded body and heat radiation or cooling from the metal molded body is improved. The time required for preheating or precooling can be further shortened, and the temperature return time can be further shortened.

In the present invention, it is preferable that at least one of the plurality of metal molded bodies is provided such that the through hole penetrates in the thickness direction. A through hole extends in the thickness direction of the plate-shaped metal molded body. Therefore, the efficiency of heat storage or cold storage and heat radiation or cold radiation is further improved, the time required for preheating or precooling can be further shortened, and the temperature return time can be further shortened significantly. Note that all of the plurality of metal molded bodies may have a plurality of through holes penetrating in the thickness direction.

In the present invention, at least one of the plurality of metal molded bodies may be provided such that the through hole penetrates in a surface direction. A through hole extends in the surface direction of the plate-shaped metal molded body. Note that all of the plurality of metal molded bodies may have a plurality of through holes penetrating in the surface direction. Further, a part of the plurality of metal molded bodies has a plurality of through holes penetrating in the surface direction, and a part or all of the plurality of metal molded bodies has a plurality of through holes penetrating in the thickness direction. You may do so.

In the present invention, it is preferable that the plurality of through holes of each of the plurality of metal molded bodies have a common penetrating direction. Since all the through-holes in each of the plurality of metal molded bodies are arranged in the same direction, a gas rectification effect can be obtained.

During operation of the environmental test apparatus, the gas may mainly flow in a direction intersecting the surface direction of the plurality of metal molded bodies. Here, the operation of the environmental test apparatus means the time when hot air or cold air is supplied from the temperature-controlled room to the test chamber, and the time when the temperature-controlled room is precooled or preheated. In the present invention, "air mainly flows in the A direction" means that 50% or more of the entire air flow flows in the A direction.

During operation of the environmental test device, the gas may mainly flow in a direction along the surface of the plurality of metal molded bodies. Since the pressure loss due to the metal molded body is reduced, the difference in gas flow velocity between the upstream end and the downstream end becomes relatively small. Therefore, it is possible to reduce the maximum output and downsize the blower.

The plurality of metal molded bodies may be arranged in a fan shape. This allows the gas to be rectified in a desired direction.

Further, in the case where the plurality of metal molded bodies are arranged in a fan shape, each of the plurality of metal molded bodies is provided with the through hole in the thickness direction, and when the environmental test device is operated, gas However, the liquid may mainly flow in a direction intersecting the surface direction of the plurality of metal molded bodies. By causing gas to flow through the through holes that penetrate each metal molded body in the thickness direction, it is possible to change the direction in which the gas flows.

The time required for preheating or precooling can be shortened, and the time required for temperature recovery in the test chamber can be significantly shortened.

1 is a perspective view showing the appearance of an environmental test device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of a heat insulating casing placed in the environmental test device shown in FIG. 1. FIG. 3 is a cross-sectional view of the heat storage unit shown in FIG. 2. FIG. 3 is a cross-sectional view of the cold storage unit shown in FIG. 2. FIG. FIG. 4 is a perspective view of a plurality of lotus-type porous metal molded bodies shown in FIG. 3; FIG. 7 is a perspective view of a plurality of lotus-shaped porous metal molded bodies in the environmental test device of the first modification. FIG. 7 is a perspective view of a plurality of lotus-shaped porous metal molded bodies in the environmental test device of a second modification. FIG. 7 is a perspective view of a plurality of lotus-shaped porous metal molded bodies in the environmental test device of a third modification. It is a top view of several lotus-type porous metal molded bodies in the environmental test apparatus of a 4th modification. It is a top view of several lotus type|mold porous metal molded bodies in the environmental test apparatus of a 5th modification. FIG. 7 is a side view of a plurality of lotus-shaped porous metal molded bodies in the environmental test device of the sixth modification.

(overall structure)
DESCRIPTION OF THE PREFERRED EMBODIMENTS An environmental test device according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an environmental test device 1 according to this embodiment, which is a thermal shock test device. Inside a casing 13 that constitutes the outer shell of the environmental test device 1, a heat insulating casing 2 indicated by a broken line is disposed. The inside of the heat insulating case 2 is divided into three rooms as shown in FIG. Specifically, the inside of the insulated housing 2 includes a test chamber 3 in which the sample is placed, a high temperature chamber 5 which is a temperature-controlled room that sends hot air to the test chamber 3, and a temperature control room that sends cold air to the test chamber 3. It is divided into a cold room 6 which is a cooking room. In this embodiment, as shown in FIG. 2, a high temperature chamber 5 is arranged in the upper part of the test chamber 3, and a low temperature chamber 6 is arranged in the lower part. The test chamber 3 is accessible via an opening/closing door 50 attached to the front of the housing 13.

Two vents 7a and 7b are provided between the test chamber 3 and the high temperature chamber 5 to communicate them with each other. Similarly, two vents 8a and 8b are provided between the test chamber 3 and the cold room 6 to communicate them with each other. Dampers 10a, 10b, 11a, and 11b are installed near the vents 7a, 7b, 8a, and 8b of the test chamber 3, respectively, to restrict the flow of gas between the chambers. By opening the dampers 10a and 10b, a high temperature side air circulation path is formed between the test chamber 3 and the high temperature chamber 5. By opening the dampers 11a and 11b, a low temperature side air circulation path is formed between the test chamber 3 and the low temperature chamber 6.

The test chamber 3 is a space in which two or more environments selected from a room temperature environment, a high temperature environment, and a low temperature environment are repeatedly reproduced. A normal temperature environment is generated during normal temperature exposure operation, a high temperature environment is generated during high temperature exposure operation, and a low temperature environment is generated during low temperature exposure operation. A test room temperature sensor 12 is arranged inside the test room 3 to detect the ambient temperature.

The high temperature chamber 5 is a portion having a function of heating the gas in the room to a preheating temperature set in advance and circulating the heated gas between the test chamber 3 and the test chamber 3 . In the high temperature chamber 5, a heater 15 that heats the gas, a high temperature side blower 16 that circulates the gas, a heat storage unit 18, and a high temperature side temperature sensor 17 that detects the ambient temperature inside the high temperature chamber 5 are arranged. There is.

The heat storage unit 18 includes a plurality of lotus-type porous metal molded bodies 18a (an example of a metal molded body, see FIG. 3), which will be described later.

The cold room 6 is a part that has a function of cooling the gas in the room to a pre-cooling temperature set in advance and circulating the cooled gas between the test chamber 3 and the test chamber 3 . The cold room 6 includes a cooler 20 that cools the gas, a low temperature side blower 21 that circulates the gas, an adjustment heater 23 that finely adjusts the temperature of the cooled gas, a cold storage unit 24, and a cooler 20 that cools the gas. A low-temperature side temperature sensor 25 is arranged to detect the ambient temperature.

The cool storage unit 24 includes a plurality of lotus-type porous metal molded bodies 24a (an example of a metal molded body, see FIG. 4) made of the same material as the lotus-type porous metal molded body 18a.

(heat storage unit)
As shown in FIG. 3, the heat storage unit 18 has five lotus-shaped porous metal molded bodies 18a as heat storage units. Each of the five lotus-shaped porous metal molded bodies 18a is a plate-shaped member made of aluminum or copper, and the five lotus-shaped porous metal molded bodies 18a are arranged so that their surface directions are parallel to the surface directions of the adjacent lotus metal molded bodies 18a. The porous metal molded bodies 18a are arranged in a straight line in a direction perpendicular to the surface direction (indicated by arrow A in FIG. 3).

Each lotus-shaped porous metal molded body 18a has a plurality of pores H (an example of through holes) extending in direction A, which is the thickness direction thereof. In this embodiment, the five lotus-shaped porous metal molded bodies 18a are located in a straight line so that the end surfaces where the openings of the pores H are located face each other. Lotus-type porous metal (or lotus metal) is defined in JIS H 7009 as a type of porous metal, and has many elongated pores arranged in the same direction. Each pore H functions as a heat reservoir, and the gas within the pore H can be quickly moved as wind, so each lotus-shaped porous metal molded body 18a has a large amount of heat storage, and the heat storage and heat dissipation rate are very high. fast. For example, when compared to an aluminum block, the amount of heat storage is several tens to several hundred times higher, and the heat storage and heat dissipation rate is several hundred times higher.

Although a very large number of pores H are actually formed, in the drawings of the present application, only a few pores H are schematically enlarged. Note that among the many pores H formed in each lotus-type porous metal molded body 18a, there may be some that do not actually penetrate through the lotus-type porous metal molded body 18a along the direction A, but in FIG. , all the pores H are depicted as passing through the lotus-shaped porous metal molded body 18a along the direction A.

(cold storage unit)
As shown in FIG. 4, the cold storage unit 24 includes five lotus-shaped porous metal molded bodies 24a as cold storage units. Each of the five lotus-shaped porous metal molded bodies 24a is a plate-shaped member made of aluminum or copper, and the five lotus-shaped porous metal molded bodies 24a are arranged so that their surface directions are parallel to the surface directions of the adjacent lotus metal molded bodies 24a. The porous metal molded bodies 24a are arranged in a straight line in a direction (indicated by arrow A in FIG. 4) orthogonal to the surface direction.

Each lotus-shaped porous metal molded body 24a has a plurality of pores H (an example of through holes) extending in direction A, which is the thickness direction thereof. In this embodiment, the five lotus-shaped porous metal molded bodies 24a are located in a straight line so that the end surfaces where the pores H are present are opposite to each other. Since each pore H functions as a heat reservoir and the gas within the pore H can be quickly moved as wind, each lotus-shaped porous metal molded body 24a has a large amount of cold storage, and the rate of cold storage and cooling is extremely high. fast. For example, when compared to an aluminum block, the amount of cool storage is several ten to several hundred times, and the cold storage and cooling rate is several hundred times faster. Note that, as in FIG. 3, a very large number of pores H are actually formed, but in FIG. 4, only a few pores H are schematically enlarged. Moreover, in FIG. 4, all the pores H are depicted as penetrating the lotus-shaped porous metal molded body 24a along the direction A.

(High temperature exposure operation)
During high temperature exposure operation, the high temperature side dampers 10a, 10b are opened and the low temperature side dampers 11a, 11b are closed. Then, the gas in the high temperature chamber 5 is introduced into the test chamber 3, and the heating heater 15 And the high temperature side blower 16 is driven to circulate the gas to the high temperature side air circulation path. At this time, within the heat storage unit 18, the gas mainly flows in the thickness direction of the lotus-shaped porous metal molded body 18a. As shown by thick arrows in FIG. 5, a relatively large amount of gas passes through the pores H and flows through the lotus-shaped porous metal molded body 18a in the thickness direction. Note that the lotus-type porous metal molded body 18a is preheated as described later. Thereafter, the heater 15 and the high-temperature blower 16 are controlled to maintain the temperature of the gas in the test chamber 3 near the high-temperature test temperature until the high-temperature exposure operation period ends. Note that immediately before the high-temperature exposure operation, a low-temperature exposure operation may be performed, or a room-temperature exposure operation may be performed. In the room temperature exposure operation, the high temperature side dampers 10a, 10b and the low temperature side dampers 11a, 11b are closed, and the room temperature exposure damper (not shown) is opened to introduce outside air.

When the high-temperature exposure operation period starts, precooling of the plurality of lotus-shaped porous metal molded bodies 24a in the cold storage unit 24 begins in the cold room 6. Specifically, the cooler 20 and the low-temperature blower 21 are driven to circulate the gas in the low-temperature chamber 6 until the gas in the low-temperature chamber 6 reaches a predetermined precooling temperature detected by the low-temperature sensor 25. Do it like this. At this time, within the cool storage unit 24, the gas mainly flows in the thickness direction of the lotus-shaped porous metal molded body 24a. As shown in FIG. 5, a relatively large amount of gas passes through the pores H and flows through the lotus-shaped porous metal molded body 24a in the thickness direction. Thereafter, the cooler 20, adjustment heater 23, and low-temperature side blower 21 are controlled, and the temperature of the gas in the low-temperature chamber 6 is maintained near the predetermined pre-cooling temperature until the high-temperature exposure operation period ends.

In this embodiment, since the lotus-type porous metal molded body 18a is used as a heat storage device, the time from when the high-temperature exposure operation is started until the gas in the test chamber 3 reaches the high-temperature side test temperature, that is, the temperature return time. For example, the length is much shorter than when using a simple metal (aluminum) lump or a simple porous metal molded body in which a plurality of pores have no directionality as a heat accumulator. This is because the rate of heat radiation from the preheated lotus-type porous metal molded body 18a is very fast. Furthermore, the gas in the test chamber 3 quickly reaches the high-temperature test temperature, and there is no need to constantly drive the heater 15 early, so energy can be saved.

In this embodiment, since the lotus-type porous metal molded body 24a is used as a regenerator, the time from the start of the high temperature exposure operation period until the gas in the low temperature chamber 6 reaches a predetermined precooling temperature is, for example, a regenerator. The length is much shorter than when using a simple metal (aluminum) lump or a metal molded body without a plurality of through holes. This is because the rate of cool storage in the lotus-type porous metal molded body 24a is very fast. Furthermore, the gas in the cold room 6 quickly reaches the pre-cooling temperature, and there is no need to constantly drive the cooler 20, adjustment heater 23, and low-temperature side blower 21, so energy can be saved.

(Low temperature exposure operation)
During low temperature exposure operation, the low temperature side dampers 11a and 11b are opened and the high temperature side dampers 10a and 10b are closed. Then, the cooler 20 and the low-temperature blower 21 are driven so that the temperature of the gas in the test chamber 3 detected by the test chamber temperature sensor 12 becomes the low-temperature test temperature (for example, -60°C), and the gas is transferred to the low-temperature side. Circulate into the air circulation path. At this time, within the cool storage unit 24, the gas mainly flows in the thickness direction of the lotus-shaped porous metal molded body 24a. At this time, as well as shown in FIG. 5, a relatively large amount of gas passes through the pores H and flows through the lotus-shaped porous metal molded body 24a in the thickness direction. Note that, as described above, the lotus-type porous metal molded body 24a is pre-cooled. Thereafter, the cooler 20, adjustment heater 23, and low-temperature blower 21 are controlled to maintain the temperature of the gas in the test chamber 3 near the low-temperature test temperature until the low-temperature exposure operation period ends. Note that immediately before the low-temperature exposure operation, there may be a high-temperature exposure operation or a room-temperature exposure operation.

When the low-temperature exposure operation period starts, preheating of the plurality of lotus-shaped porous metal molded bodies 18a in the heat storage unit 18 starts in the high-temperature room 5. That is, the heater 15 and the high temperature blower 16 are driven to circulate the gas in the high temperature chamber 5 until the gas in the high temperature chamber 5 detected by the high temperature sensor 17 reaches a predetermined preheating temperature. . At this time, within the heat storage unit 18, air mainly flows in the thickness direction of the lotus-shaped porous metal molded body 18a. As shown in FIG. 5, a relatively large amount of gas passes through the pores H and flows through the lotus-shaped porous metal molded body 18a in the thickness direction. Thereafter, the heater 15 and the high temperature blower 16 are controlled to maintain the temperature of the gas in the high temperature chamber 5 near the predetermined preheating temperature until the low temperature exposure operation period ends.

In this embodiment, since the lotus-type porous metal molded body 24a is used as a regenerator, the time from the start of the low-temperature exposure operation until the gas in the test chamber 3 reaches the low-temperature side test temperature, that is, the temperature return time. For example, the length is much shorter than when a simple metal (aluminum) lump or a simple porous metal molded body with a plurality of pores without directionality is used as a regenerator. This is because the cooling rate from the pre-cooled lotus-type porous metal molded body 24a is very fast. Furthermore, since the gas in the test chamber 3 quickly reaches the low-temperature test temperature, there is no need to constantly drive the cooler 20 early, and energy can be saved.

In this embodiment, since the lotus-type porous metal molded body 18a is used as a heat storage device, the time from the start of the low temperature exposure operation period until the gas in the high temperature chamber 5 reaches a predetermined preheating temperature is, for example, the heat storage device. The length is much shorter than when using a simple metal (aluminum) lump or a metal molded body without a plurality of through holes. This is because the rate of heat accumulation in the lotus-type porous metal molded body 18a is very fast. Furthermore, the gas in the high temperature chamber 5 quickly reaches the predetermined preheating temperature, and there is no need to constantly drive the heating heater 15 and the high temperature side blower 16 early, so that energy can be saved.

(Other effects)
Other effects of the environmental test device 1 according to this embodiment will be explained. As described above, in this embodiment, by using the lotus-type porous metal molded body 18a, the time required for the gas in the test chamber 3 to reach the high-temperature test temperature during high-temperature exposure operation and the time required for the gas in the test chamber 3 to reach the high-temperature side test temperature during low-temperature exposure operation can be reduced. The time required for the gas in the high temperature chamber 5 to reach the predetermined preheating temperature can be extremely shortened. Therefore, even if the maximum output of the heater 15 is reduced, the gas in the test chamber 3 can be brought to the high-temperature test temperature within a desired time, and the gas in the high-temperature chamber 5 can be brought to a predetermined preheating temperature within a desired time. This makes it possible to save energy. Accordingly, it is also possible to downsize the heater 15 and the environmental test device 1.

In addition, as described above, by using the lotus-type porous metal molded body 24a, the time required for the gas in the test chamber 3 to reach the low-temperature side test temperature during low-temperature exposure operation, and the time required for the gas in the test chamber 3 to reach the low-temperature side test temperature during high-temperature exposure operation can be reduced. The time it takes for the gas inside 6 to reach a predetermined precooling temperature can be extremely shortened. Therefore, even if the maximum output of the cooler 20 is lowered, the gas in the test chamber 3 can be brought to the low-temperature test temperature within a desired time, and the air in the cold room 6 can be brought to a pre-cooled temperature within a desired time. This makes it possible to save energy. Accordingly, it is also possible to downsize the cooler 20 and the environmental test device 1.

Moreover, the rectified air is discharged by passing the gas through the pores H of the lotus-type porous metal molded bodies 18a and 24a, so that the flow of air supplied to the heating heater 15 and the cooler 20 becomes uniform. Therefore, the heat exchange efficiency in the heater 15 and the cooler 20 can be improved.

Furthermore, in this embodiment, each of the plurality of lotus-shaped porous metal molded bodies 18a, 24a is plate-shaped, so the surface area per unit weight is larger than that in a case where the lotus-shaped porous metal molded bodies 18a, 24a are not plate-shaped. Therefore, the efficiency of storing heat or cold in the lotus-type porous metal molded bodies 18a, 24a, and of heat radiation or cooling from the lotus-type porous metal molded bodies 18a, 24a is improved. Therefore, it is possible to further shorten the time required for preheating or precooling, and it is also possible to significantly shorten the temperature return time.

In this embodiment, the thickness direction of the five lotus-type porous metal molded bodies 18a is common, and these are located in a straight line in the thickness direction so that the end surfaces with the openings of the pores H face each other. , the proportion of air flowing through all five lotus-shaped porous metal molded bodies 18a increases. The same applies to the five lotus-shaped porous metal molded bodies 24a. This further significantly improves the efficiency of heat storage or cold storage and heat radiation or cold radiation. It is also excellent in terms of air rectification.

(First modification)
Next, a first modification of the above-described embodiment will be described. Since the first modification differs from the above-described embodiment only in the heat storage unit and the cool storage unit, the following description will focus on the differences from the above-described embodiment.

In the first modification, as shown in FIG. 6, five lotus-shaped porous metal molded bodies 31a are provided as heat storage devices. Each of the five lotus-type porous metal molded bodies 31a is a plate-shaped member made of aluminum or copper, and the five lotus-type porous metal molded bodies 31a are arranged so that their surface directions are mutually parallel to the surface directions of the adjacent lotus-type porous metal molded bodies 31a. The lotus-shaped porous metal molded bodies 31a are arranged in a straight line in a direction perpendicular to the surface direction (direction indicated by arrow A in FIG. 6). A plurality of pores H extending in the thickness direction are formed in each lotus-shaped porous metal molded body 31a. Therefore, in the first modification, the five lotus-shaped porous metal molded bodies 31a are located in a straight line so that the end surfaces where the openings of the pores H are located face each other. Although not shown, the five lotus-type porous metal molded bodies in the cold storage unit are also arranged in the same orientation as the five lotus-type porous metal molded bodies 31a, and a plurality of pores H are similarly formed. .

During high-temperature exposure operation or low-temperature exposure operation of the environmental test device according to the first modification, gas flows in the surface direction of the lotus-shaped porous metal molded body 31a (as indicated by arrow B in FIG. 6), as indicated by the thick arrow in FIG. flows mainly in the direction shown). Also at this time, some of the gas passes through the pores H and flows through the lotus-shaped porous metal molded body 31a in the thickness direction. This also applies to the cold storage unit.

Even in the first modification, at least some of the effects obtained in the embodiment described above can be obtained. Furthermore, since the gas mainly flows in the surface direction of the lotus-type porous metal molded body 31a, the pressure loss due to the lotus-type porous metal molded body 31a is reduced. Therefore, the difference in air flow velocity between the upstream end and the downstream end within the heat storage unit becomes relatively small, making it possible to reduce the maximum output and downsize the blowers 16 and 21. Note that the direction A shown in FIG. 6 may be the same as or different from the direction A shown in FIGS. 3 to 5.

(Second modification)
Next, a second modification of the above-described embodiment will be described. Since the second modification differs from the above-described embodiment only in the heat storage unit and the cool storage unit, the following description will focus on the differences from the above-described embodiment.

In the second modification, as shown in FIG. 7, five lotus-shaped porous metal molded bodies 32a are provided as heat storage devices. Each of the five lotus-type porous metal molded bodies 32a is a plate-shaped member made of aluminum or copper, and the five lotus-type porous metal molded bodies 32a are arranged so that their surface directions are mutually parallel to the surface directions of the adjacent lotus-type porous metal molded bodies 32a. The lotus-shaped porous metal molded bodies 32a are arranged in a straight line in a direction perpendicular to the surface direction (direction indicated by arrow A in FIG. 7). That is, in the second modification, the five lotus-type porous metal molded bodies 32a are located on a straight line so that their main surfaces perpendicular to the thickness direction face each other. Each lotus-shaped porous metal molded body 32a has a plurality of pores H extending in a horizontal direction B, which is one of its surface directions. Although not shown, the five lotus-type porous metal molded bodies in the cold storage unit are also arranged in the same orientation as the five lotus-type porous metal molded bodies 32a, and similarly have a plurality of pores H formed therein. .

During high-temperature exposure operation or low-temperature exposure operation of the environmental test device according to the second modification, gas mainly flows in the surface direction (direction B) of the lotus-shaped porous metal molded body 32a, as shown by the thick arrow in FIG. . Also at this time, some of the gas passes through the pores H and flows through the lotus-shaped porous metal molded body 32a in the thickness direction. This also applies to the cold storage unit.

The second modification also provides at least some of the effects obtained in the embodiment described above. In the second modification, gas flows through both the space between two adjacent lotus-type porous metal molded bodies 32a and the pores H that penetrate in the surface direction of the lotus-type porous metal molded bodies 32a. . Therefore, excellent efficiency of heat storage or cold storage and heat radiation or cooling can be obtained. Further, since the gas mainly flows in the surface direction of the lotus-type porous metal molded body 32a, the pressure loss due to the lotus-type porous metal molded body 32a is reduced. Therefore, the difference in air flow velocity between the upstream end and the downstream end within the heat storage unit becomes relatively small, making it possible to reduce the maximum output and downsize the blowers 16 and 21. Note that the direction A shown in FIG. 7 may be the same as or different from the direction A shown in FIGS. 3 to 5.

(Third modification)
Next, a third modification of the above-described embodiment will be described. Since the third modification differs from the above-described embodiment only in the heat storage unit and the cool storage unit, the following description will focus on the differences from the above-described embodiment.

In the third modification, as shown in FIG. 8, five lotus-shaped porous metal molded bodies 33a are provided as heat storage devices. Each of the five lotus-type porous metal molded bodies 33a is a plate-shaped member made of aluminum or copper, and the five lotus-type porous metal molded bodies 33a are arranged so that their surface directions are mutually parallel to the surface directions of the adjacent lotus-type porous metal molded bodies 33a. The lotus-shaped porous metal molded bodies 33a are arranged in a straight line in a direction perpendicular to the surface direction (direction indicated by arrow A in FIG. 8). That is, in the third modification, the five lotus-type porous metal molded bodies 33a are located in a straight line so that their main surfaces perpendicular to the thickness direction face each other. Each lotus-shaped porous metal molded body 33a has a plurality of pores H extending in a direction B that is obliquely (for example, 45°) in the surface direction (the upstream side of the gas flow is up and the downstream side of the gas flow is down). It is formed. In FIG. 8, which is a schematic diagram, the openings of the pores H drawn on the top surface of the molded body and the openings of the pores H drawn on the side surface of the molded body may be connected. Further, although not shown, the five lotus-type porous metal molded bodies in the cold storage unit are also arranged in the same orientation as the five lotus-type porous metal molded bodies 33a, and similarly have a plurality of pores H formed therein. .

In the third modification, during high-temperature exposure operation or low-temperature exposure operation of the environmental test device, gas mainly flows obliquely from the upper left to the lower right, as shown by the thick arrow in FIG. Also at this time, some air passes through the pores H and flows through the lotus-shaped porous metal molded body 33a in the thickness direction. This also applies to the cold storage unit.

The third modification also provides at least some of the effects obtained in the second modification described above. Note that the direction A shown in FIG. 8 may be the same as or different from the direction A shown in FIGS. 3 to 5.

(Fourth modification)
Next, a fourth modification of the above-described embodiment will be described. Since the fourth modification differs from the above-described embodiment only in the heat storage unit and the cold storage unit, the following description will focus on the differences from the above-described embodiment.

In the fourth modification, the heat storage unit has five lotus-shaped porous metal molded bodies 34a as heat storages, as shown in FIG. 9 which is a top view. Each of the five lotus-shaped porous metal molded bodies 34a is a plate-shaped member made of aluminum or copper. The five lotus-shaped porous metal molded bodies 34a are arranged upright on one plane. In other words, the thickness direction of the five lotus-shaped porous metal molded bodies 34a is all parallel to one plane. Further, the five lotus-shaped porous metal molded bodies 34a are arranged in a fan shape. In other words, the amount of angular change in the thickness direction of the two adjacent lotus-type porous metal molded bodies 34a is the same for both adjacent two, including the direction.

In this embodiment, as can be seen from FIG. 9, five lotus-type porous metal molded bodies 34a are arranged so that the left ends of two adjacent lotus-type porous metal molded bodies 34a are separated from each other and the distance is smaller than the distance between the right ends. The orientation of the molded body 34a in the thickness direction is determined. In the example shown in FIG. 9, only the center lotus-shaped porous metal molded body 34a is moved in the direction shown by arrow A in FIG. ) is included as the plane direction.

A plurality of pores H extending in the thickness direction as shown in FIGS. 3 and 5 are formed in each lotus-type porous metal molded body 34a. Although not shown, the five lotus-type porous metal molded bodies in the cold storage unit are also arranged in the same orientation as the five lotus-type porous metal molded bodies 34a, and a plurality of pores H are similarly formed. . As another modification, each lotus-shaped porous metal molded body 34a may have a plurality of pores H extending in the plane direction as shown in FIG. 7 or 8.

During high-temperature exposure operation or low-temperature exposure operation of the environmental test device according to the fourth modification, gas is vented along the surface of each of the five lotus-shaped porous metal molded bodies 34a, as shown by thick arrows in FIG. It mainly flows toward the heating heater 15 from the port 7b. In this embodiment, the gas flow can be expanded as it goes downstream. Also at this time, some of the gas passes through the pores H and flows through the lotus-shaped porous metal molded body 34a. This also applies to the cold storage unit.

The fourth modification also provides at least some of the effects obtained in the first modification described above.

(Fifth modification)
Next, a fifth modification of the above-described embodiment will be described. Since the fifth modification differs from the above-described embodiment only in the heat storage unit and the cool storage unit, the following description will focus on the differences from the above-described embodiment.

In the fifth modification, the heat storage unit has five lotus-shaped porous metal molded bodies 35a as heat storages, as shown in FIG. 10 which is a top view. Each of the five lotus-shaped porous metal molded bodies 35a is a plate-shaped member made of aluminum or copper. The five lotus-shaped porous metal molded bodies 35a are arranged upright on one plane. That is, the thickness direction of the five lotus-type porous metal molded bodies 35a is all parallel to one plane. Further, the five lotus-shaped porous metal molded bodies 35a are arranged in a fan shape. In other words, the amount of angular change in the thickness direction of two adjacent lotus-type porous metal molded bodies 35a is the same for any two adjacent lotus-type porous metal molded bodies 35a, including the direction.

In this embodiment, as can be seen from FIG. 10, five lotus-type porous metal molded bodies 35a are arranged so that the right ends of two adjacent lotus-type porous metal molded bodies 35a are separated from each other and the distance is smaller than the distance between the left ends. The orientation of the molded body 35a in the thickness direction is determined. In the example shown in FIG. 10, only the center lotus-shaped porous metal molded body 35a is in the direction shown by arrow A in FIG. 10 (the same direction as direction A shown in FIGS. 3 to 5, but it may be ) is included as the plane direction.

A plurality of pores H extending in the thickness direction as shown in FIGS. 3 and 5 are formed in each lotus-type porous metal molded body 35a. Although not shown, the five lotus-type porous metal molded bodies in the cold storage unit are also arranged in the same orientation as the five lotus-type porous metal molded bodies 35a, and a plurality of pores H are similarly formed. . As another modification, each lotus-shaped porous metal molded body 35a may have a plurality of pores H extending in the plane direction as shown in FIG. 7 or 8.

During high-temperature exposure operation or low-temperature exposure operation of the environmental test device according to the fifth modification, gas is vented along the surface of each of the five lotus-shaped porous metal molded bodies 35a, as shown by thick arrows in FIG. It mainly flows toward the heating heater 15 from the port 7b. In this embodiment, the gas flow can be narrowed as it goes downstream. Also at this time, some of the gas passes through the pores H and flows through the lotus-shaped porous metal molded body 35a. This also applies to the cold storage unit.

The fifth modification also provides at least some of the effects obtained in the first modification described above.

(Sixth variation)
Next, a sixth modification of the above-described embodiment will be described. Since the sixth modification differs from the above-described embodiment only in the heat storage unit and the cold storage unit, the following description will focus on the differences from the above-described embodiment.

In the sixth modification, the heat storage unit has ten lotus-shaped porous metal molded bodies 36a as heat storages, as shown in FIG. 11 which is a side view. Each of the ten lotus-shaped porous metal molded bodies 36a is a plate-shaped member made of aluminum or copper. The ten lotus-shaped porous metal molded bodies 36a are arranged upright on one plane. That is, the thickness direction of each of the ten lotus-type porous metal molded bodies 36a is parallel to one plane. Furthermore, the ten lotus-shaped porous metal molded bodies 36a are arranged in a fan shape. In other words, the amount of angular change in the thickness direction of two adjacent lotus-type porous metal molded bodies 36a is the same for both adjacent two, including the direction.

Furthermore, in this embodiment, as can be seen from FIG. 11, the ten lotus-type porous metal molded bodies 36a are oriented in the thickness direction so that the right ends of two adjacent lotus-type porous metal molded bodies 36a are in contact with each other. It has been decided. In the example shown in FIG. 11, only the lotus-shaped porous metal molded body 36a disposed at the lower end closest to the vent 7b is moved in the direction shown by arrow A in FIG. 9 (the same direction as direction A shown in FIGS. 3 to 5). (but may be different) is included as the plane direction.

A plurality of pores H extending in the thickness direction as shown in FIGS. 3 and 5 are formed in each lotus-type porous metal molded body 36a. Although not shown, the ten lotus-type porous metal molded bodies in the cold storage unit are also arranged in the same direction as the ten lotus-type porous metal molded bodies 36a, and a plurality of pores H are similarly formed. ing.

During high-temperature exposure operation or low-temperature exposure operation of the environmental test device according to the sixth modification, the gas flows through the lotus-shaped porous metal molded body disposed at the lower end closest to the vent 7b, as shown by the thick arrow in FIG. 36a in the thickness direction, successively passes through the adjacent lotus-type porous metal molded bodies 36a in the thickness direction, and mainly flows from the lotus-type porous metal molded body 36a at the upper end toward the heating heater 15. Therefore, in this embodiment, the direction of the gas flow can be changed approximately at right angles. This also applies to the cold storage unit.

Even in the sixth modification, at least some of the effects described in the above-described embodiment can be obtained.

(Modified example)
Although a preferred embodiment and some modifications of the present invention have been described above, the present invention is not limited to the above-described embodiments and modifications, and various modifications can be made as long as they are within the scope of the claims. is possible.

The environmental test device according to the embodiment described above has both a heat storage device and a cold storage device, but in the present invention, the environmental test device has only one of the heat storage device and the cold storage device, and it has only one of the heat storage device and the cold storage device. It may be composed of a plurality of lotus-shaped porous metal molded bodies. Moreover, only one of the high temperature chamber and the low temperature chamber, which are temperature controlled rooms, may be provided.

In the above-described embodiments and modified examples, a lotus-type porous metal molded body is used as the "metal formed body having a plurality of through holes," but any other metal molded body other than this may be used as long as it has a plurality of through holes. may also be used. For example, a foamed metal (porous metal) with through holes may be used. The through-hole is not limited to one made using air bubbles like a lotus-type porous metal, but may be made by a mechanical method such as a drill. Further, all of the plurality of through holes do not need to extend in the same direction, and through holes may be provided with different extending directions.

The heat storage unit and the cold storage unit may be located anywhere other than the positions shown in FIG. 2 as long as the gas flows in the high temperature room and the low temperature room. A plurality of lotus-shaped porous metal molded bodies may be arranged randomly instead of in a straight line. Only one lotus-type porous metal molded body may be used. Moreover, the lotus-type porous metal molded body does not have to be plate-shaped. Further, the direction in which gas flows within the heat storage unit or the cold storage unit may be not only the surface direction and the thickness direction of the lotus-type porous metal molded body, but also any direction intersecting the surface direction. When using a plurality of lotus-type porous metal molded bodies, they may not be arranged on one plane, but may be arranged with steps.

- The plurality of lotus-shaped porous metal molded bodies do not need to have the same shape, and may have different sizes and thicknesses.
- The metal molded body may be housed in a housing provided with one or more openings. The opening may or may not have a current plate.
・The plurality of pores H extending in the thickness direction as shown in FIGS. 3 to 6 do not have to penetrate horizontally to the thickness direction. It may be angled and penetrate through.
・The plurality of pores H extending in the plane direction as shown in FIG. It is also possible to pass through it.
- The plurality of pores H extending in the plane direction as shown in FIG. 8 do not have to penetrate perpendicularly to the thickness direction (they may penetrate at an angle in the thickness direction).
- The angle of penetration of the pores H in FIGS. 9 to 11 may be in any direction.
・In the modified examples explained in FIGS. 9 to 11, the amount of angular change in the thickness direction of two adjacent metal molded bodies is the same for any two adjacent metal molded bodies, including the direction, but the angular change in the thickness direction The amounts may be different.
・In the examples up to FIG. 8, the direction of all the through-holes in the plurality of metal molded bodies is the same, but only the penetration direction of the through-holes in each of the plurality of metal molded bodies is the same, and a certain metal molding The penetrating direction common to the body and the penetrating direction common to another metal molded body may be different directions.

1 Environmental test device 2 Insulated housing 3 Test chamber 5 High temperature room 6 Low temperature room 7a, 7b, 8a, 8b Vent 10a, 10b, 11a, 11b Damper 12 Test room temperature sensor 15 Heater 16 High temperature side blower 17 High temperature side temperature Sensor 18 Heat storage unit 18a, 31a, 32a, 33a, 34a, 35a, 36a Lotus type porous metal molded body (metal molded body)
20 Cooler 21 Low temperature side blower 23 Adjustment heater 24 Cold storage unit 25 Low temperature side temperature sensor 24a Lotus type porous metal molded body (metal molded body)
H Pore (through hole)

Claims (9)

a test chamber in which the sample body is placed;
A temperature - controlled room that supplies hot air or cold air to the test chamber,
One or more plate-shaped metal molded bodies having a plurality of through holes are arranged in the temperature control chamber as a heat storage device or a cold storage device ,
An environmental test device, wherein at least one of the one metal molded body or the plurality of metal molded bodies is provided with the through hole passing through the metal molded body in a surface direction. a test chamber in which the sample body is placed;
A temperature-controlled room that supplies hot air or cold air to the test chamber,
One or more plate-shaped metal molded bodies having a plurality of through holes are arranged in the temperature control chamber as a heat storage device or a cold storage device,
At least one of the one metal molded body or the plurality of metal molded bodies is provided such that the through hole penetrates in a thickness direction intersecting a surface direction,
The one metal molded body or the plurality of metal molded bodies are configured so that gas mainly flows in a direction intersecting the surface direction of the one metal molded body or the plurality of metal molded bodies during operation of the environmental test apparatus. An environmental test device characterized by being located at . The environmental test apparatus according to claim 1, wherein a plurality of metal molded bodies are arranged in the temperature-controlled chamber. The environmental test apparatus according to claim 2, wherein a plurality of metal molded bodies are arranged in the temperature-controlled chamber. 4. The environmental testing device according to claim 3 , wherein during operation of the environmental testing device, the gas mainly flows in a direction intersecting the surface direction of the plurality of metal molded bodies. The environmental testing device according to claim 3, wherein during operation of the environmental testing device, the gas mainly flows in a direction along the surface of the plurality of metal molded bodies. The environmental test device according to any one of claims 3 to 6 , wherein the plurality of metal molded bodies are arranged in a fan shape. The plurality of metal molded bodies are arranged in a fan shape,
Each of the plurality of metal molded bodies is provided with the through hole in the thickness direction,
4. The environmental testing device according to claim 3 , wherein during operation of the environmental testing device, the gas mainly flows in a direction intersecting the surface direction of the plurality of metal molded bodies. The environmental test device according to any one of claims 3 to 8, wherein the plurality of through holes of each of the plurality of metal molded bodies have a common penetrating direction.

Images