JP7217683B2 - Environmental test equipment - Google Patents

Description

The present invention relates to an environmental test apparatus capable of adjusting the environment in which a sample is placed.

Patent Literature 1 describes an environmental test apparatus (a thermal shock test apparatus, a constant temperature and humidity apparatus, etc.) that performs a test by changing the temperature and humidity environment of a space in which a sample is arranged. In the environmental test apparatus described in Patent Document 1, a space in which a sample is placed (test chamber, sample mounting device) communicates with another space (high temperature chamber, low temperature chamber, air flow passage, low temperature air generator). (See FIGS. 1, 3, 5 and 6). In addition, in the environmental test apparatus of Patent Document 1, the test tank in which the sample is placed communicates with the high temperature tank and the low temperature tank (see FIG. 5). Further, in the environmental test apparatus described in Patent Document 1, a damper is provided in a communicating portion between the space in which the sample is arranged and the above-mentioned another space. By moving the damper, the damper can be moved between a position where the communication between the space in which the sample is arranged and the other space is blocked and a position where the communication is not blocked. It's becoming

JP 2013-170956 A

Here, in the environmental test apparatus of Patent Document 1, in a state in which the communication between the space in which the sample is arranged and the other space is cut off by a damper, the temperature, humidity, etc. for the test are maintained in the separate space. After setting the environment, the environment such as the temperature and humidity of the space in which the sample is placed is changed by moving the damper to allow the space in which the sample is placed to communicate with the other space. At this time, dew condensation occurs on the surface of the damper, and water droplets formed by the dew condensation may scatter due to the movement of the damper and adhere to the sample. In particular, when the specimen is an electronic component such as a CPU or an IC, there is a strong need to prevent adhesion.

SUMMARY OF THE INVENTION An object of the present invention is to provide an environmental test apparatus capable of suppressing scattering of water droplets caused by dew condensation.

An environment test apparatus according to a first invention includes a test chamber in which a sample is placed, an environment generation chamber in which an environment generation device for generating an environment including temperature is placed, the test chamber, and the environment generation chamber. a connecting channel, a closed position for blocking communication between the test chamber and the environment generating chamber via the connecting channel, and communication between the test chamber and the environment generating chamber via the connecting channel. and an opening position that does not block the opening and closing member, wherein the opening and closing member is provided with a water absorbing sheet, and the water absorbing sheet is provided with the water absorbing sheet when the opening and closing member is positioned at the closed position. It is arranged at least in a portion of the opening/closing member that is in contact with air having a lower temperature, out of the air in the test chamber and the air in the environment generation chamber.

After generating an environment including temperature in the environment generation chamber with the opening/closing member positioned at the closed position, when the opening/closing member is moved to the open position to create an environment corresponding to the environment generation chamber in the test chamber, opening/closing is performed. Condensation may occur on the part of the member that was in contact with the cooler of the air in the test chamber and the air in the environment generation chamber in the closed position. Then, there is a possibility that water droplets generated by dew condensation may scatter in the test chamber and adhere to the sample in the test chamber. In addition, when water droplets adhere to the sample, there is a possibility that the sample may be damaged, resulting in an inaccurate test result.

In the present invention, the water-absorbing sheet is arranged in a portion of the opening/closing member that is in contact with the lower temperature air of the air in the test chamber and the air in the environment generation chamber when the opening/closing member is in the closed position. As a result, water generated by condensation as described above is absorbed by the water absorbent sheet, and water droplets can be prevented from adhering to the sample.

An environmental test apparatus according to a second invention is the environmental test apparatus according to the first invention, wherein the environment generator includes a heating device for heating air in the environment generator chamber, and the opening/closing member comprises: It is arranged in the test chamber and has a heat insulating member and a packing arranged on the heat insulating member, and the packing is provided on the side of the heat insulating member facing the connection flow path in the closed position. The water absorbent sheet is arranged at least on a portion of the facing side surface of the heat insulating member that is outside the packing.

With the opening/closing member positioned at the closed position, the temperature of the air in the environment generation chamber is raised to a higher temperature than that in the test chamber, and then the opening/closing member is moved to the open position to create an environment corresponding to the environment generation chamber in the test chamber. When the opening and closing member is in the closed position, condensation may occur on the part of the opening and closing member that is in contact with the air in the test chamber. Specifically, when the open/close member is positioned at the closed position, the portion of the facing side surface of the heat insulating member that is outside the packing comes into contact with the air in the test chamber.

Therefore, in the present invention, the water absorbing sheet is arranged at least on the outer side of the packing on the facing side surface of the heat insulating member. As a result, water generated by condensation as described above is absorbed by the water absorbent sheet, and water droplets can be prevented from adhering to the sample.

According to a third aspect of the present invention, there is provided an environmental test apparatus according to the second aspect, wherein the water absorbent sheet protrudes from the opening and closing member .

In the present invention, when water droplets generated by dew condensation on the packing are about to scatter from the packing over the opening/ closing member into the test chamber, the water droplets are captured by the part of the water absorbent sheet protruding from the opening/ closing member . can be done. This can prevent water droplets from adhering to the sample.

An environmental test apparatus according to a fourth aspect is the environmental test apparatus according to the first aspect, wherein the environment generator includes a cooling device for cooling air in the environment generation chamber, and the opening/closing member comprises: It is arranged in the test chamber and has a heat insulating member and a packing arranged on the heat insulating member, and the packing is provided on the side of the heat insulating member facing the connection flow path in the closed position. The water absorbent sheet is arranged at least on a portion of the facing side surface of the heat insulating member, which is located inside the packing.

With the opening/closing member positioned at the closed position, the air inside the environment generation chamber is cooled to a lower temperature than the air inside the test chamber, and then the opening/closing member is moved to the open position to create an environment corresponding to the environment generation chamber in the test chamber. When the open/close member is in the closed position, condensation may occur on the portion of the open/close member that is in contact with the air in the environment generation chamber. Specifically, when the open/close member is positioned at the closed position, a portion of the facing side surface of the heat insulating member, which is located inside the packing, comes into contact with the air in the environment generation chamber.

Therefore, in the present invention, the water absorbing sheet is arranged at least on the inner side of the packing on the facing side surface of the heat insulating member. As a result, water generated by condensation as described above is absorbed by the water absorbent sheet, and water droplets can be prevented from adhering to the sample.

An environmental test apparatus according to a fifth aspect is the environmental test apparatus according to the second or fourth aspect, wherein the water absorbing sheet is arranged over the entire surface of the heat insulating member on the opposite side.

According to the present invention, the water-absorbing sheet can efficiently absorb the water caused by the dew condensation as described above.

An environmental test apparatus according to a sixth aspect is the environmental test apparatus according to any one of the first to fifth aspects, wherein the open/close member is rotatably supported by a rotating shaft and rotates about the rotating shaft. thereby moving between said closed position and said open position.

When the opening/closing member rotates to move between the closed position and the open position, water droplets generated by dew condensation tend to scatter when the opening/closing member rotates. Therefore, in such a case, it is particularly significant to dispose the water absorbent sheet on the above-described portion of the opening/closing member.

According to the present invention, it is possible to prevent water droplets from adhering to a sample by absorbing moisture generated by dew condensation in the water absorbent sheet.

1 is a schematic configuration diagram of a constant temperature and humidity device according to an embodiment of the present invention; FIG. (a) is a cross-sectional view of the damper peripheral portion in the closed position, and (b) is a cross-sectional view of the damper peripheral portion in the open position. It is a figure of the damper seen from the lamination direction. (a) is a diagram corresponding to FIG. 2(a) of Modification 1, and (b) is a diagram corresponding to FIG. 2(b) of Modification 1. FIG. (a) is a diagram corresponding to FIG. 1 of Modification 2, and (b) is an enlarged diagram of the damper of (a).

Preferred embodiments of the present invention are described below.

<Overall Configuration of Constant Temperature and Humidity Device>
As shown in FIG. 1, a constant temperature and humidity apparatus 1 (the "environmental test apparatus" of the present invention) according to the present embodiment includes a test chamber 3 and two constant temperature and constant Wet baths 4 and 5 are provided.

The test chamber 3 is provided in the central portion of the housing 2 in the vertical direction. The test tank 3 has a test chamber 11 in which the sample body W is arranged. The sample W is, for example, an electronic component such as a CPU or an IC. In addition, the test chamber 3 is provided with an opening (not shown) for loading and unloading for communicating the test chamber 11 with the outside. In addition, a door (not shown) that can be opened and closed is provided in the loading/unloading opening.

The constant temperature and humidity chamber 4 is arranged above the test chamber 3 . The constant temperature and humidity bath 4 has an environment generation chamber 21 . The upper left end of the test chamber 11 in FIG. 1 and the lower left end of the environment generation chamber 21 in FIG. 1 are connected via a connecting channel 16 extending vertically. The upper right end of the test chamber 11 in FIG. 1 and the lower right end of the environment generation chamber 21 in FIG. 1 are connected via a connecting channel 17 extending vertically.

A constant temperature and humidity chamber 5 is arranged below the test chamber 3 . The constant temperature and humidity bath 5 has an environment generation chamber 26 . The lower left end of the test chamber 11 in FIG. 1 and the upper left end of the environment generation chamber 26 in FIG. 1 are connected via a connecting channel 18 extending vertically. 1 of the test chamber 11 and the upper right end of the environment generation chamber 26 in FIG. 1 are connected via a connection channel 19 extending in the vertical direction.

Also, in the test chamber 11, four dampers 31-34 corresponding to the four connecting channels 16-19 are arranged.

A damper 31 is provided for the connection flow path 16 . A rotary shaft 31a extending in a direction perpendicular to the paper surface of FIG. 1 is provided at the upper left end of the test chamber 11 in FIG. 1, and a damper 31 is rotatably supported by the rotary shaft 31a. The damper 31 can move between a closed position indicated by a solid line in FIG. 1 and an open position indicated by a broken line in FIG. 1 by rotating about the rotating shaft 31a. When the damper 31 is positioned at the closed position, the damper 31 closes the opening 16a at the lower end (test chamber 11 side) of the connection channel 16, and the test chamber 11 and the environment generation chamber 21 are connected via the connection channel 16. communication is interrupted. When the damper 31 is in the open position, the damper 31 does not close the opening 16 a of the connection channel 16 , and the test chamber 11 and the environment generation chamber 21 communicate with each other through the connection channel 16 .

The damper 32 is provided for the connection flow path 17 . A rotating shaft 32a extending in a direction perpendicular to the paper surface of FIG. 1 is provided at the upper right end of the test chamber 11 in FIG. 1, and a damper 32 is rotatably supported by the rotating shaft 32a. The damper 32 can move between a closed position indicated by a solid line in FIG. 1 and an open position indicated by a dashed line in FIG. 1 by rotating around the rotating shaft 32a. When the damper 32 is positioned at the closed position, the damper 32 closes the opening 17a at the lower end (test chamber 11 side) of the connection channel 17, and the test chamber 11 and the environment generation chamber 21 are connected via the connection channel 17. communication is interrupted. When the damper 32 is in the open position, the damper 32 does not block the opening 17 a of the connection channel 17 , and the test chamber 11 and the environment generation chamber 21 communicate with each other through the connection channel 17 .

A damper 33 is provided for the connection flow path 18 . A rotating shaft 33a extending in a direction perpendicular to the paper surface of FIG. 1 is provided at the lower left end of the test chamber 11 in FIG. 1, and a damper 33 is rotatably supported by the rotating shaft 33a. The damper 33 can move between the closed position shown in FIG. 1 and the open position shown by the dashed line in FIG. 1 by rotating around the rotating shaft 33a. When the damper 33 is positioned at the closed position, the damper 33 closes the opening 18a at the upper end (test chamber 11 side) of the connection channel 18, and the test chamber 11 and the environment generation chamber 26 are connected via the connection channel 18. communication is interrupted. When the damper 33 is in the open position, the damper 33 does not close the opening 18 a of the connection channel 18 , and the test chamber 11 and the environment generation chamber 26 communicate with each other through the connection channel 18 .

A damper 34 is provided for the connection flow path 19 . A rotating shaft 34a extending in a direction perpendicular to the paper surface of FIG. 1 is provided at the lower right end of the test chamber 11 in FIG. 1, and a damper 34 is rotatably supported by the rotating shaft 34a. The damper 34 can move between the closed position indicated by the solid line in FIG. 1 and the open position indicated by the broken line in FIG. 1 by rotating around the rotating shaft 34a. When the damper 34 is located at the closed position, the damper 34 closes the opening 19a at the upper end (test chamber 11 side) of the connection channel 19, and the test chamber 11 and the environment generation chamber 26 are connected via the connection channel 19. communication is interrupted. When the damper 34 is in the open position, the damper 34 does not block the opening 19 a of the connection channel 19 , and the test chamber 11 and the environment generation chamber 26 communicate with each other through the connection channel 19 .

The environment generation chamber 21 is provided with a humidifier 41a, a cooling dehumidifier 42a, a heater 43a (the "heating device" of the present invention), and a blower 44a. In the environment generation chamber 26, a humidifier 41b, a cooling dehumidifier 42b (the "cooling device" of the present invention), a heater 43b, and a blower 44b are arranged. In this embodiment, the humidifier 41a, the cooling dehumidifier 42a and the heater 43a arranged in the environment generation chamber 21, and the humidifier 41b, the cooling dehumidifier 42b and the heater 43b arranged in the environment generation chamber 26 corresponds to the "environment generator" of the present invention.

The humidifier 41a, the cooling dehumidifier 42a, and the heater 43a are positioned between the connection flow path 16 and the connection flow path 17 in the horizontal direction of FIG. They are in order. The humidifier 41b, the cooling dehumidifier 42b, and the heater 43b are positioned between the connection flow path 18 and the connection flow path 19 in the horizontal direction of FIG. They are in order.

The humidifiers 41a and 41b are for humidifying the air in the environment generation chambers 21 and 26, respectively. The cooling dehumidifiers 42a, 42b are for cooling and dehumidifying the air in the environment generating chambers 21, 26, respectively. The heaters 43a and 43b are for heating air in the environment generating chambers 21 and 26, respectively.

The blower 44 a is positioned above the connection flow path 17 . The blower 44a is connected to the motor 45a. When the motor 45 a is driven, the air blower 44 a sends the air inside the environment generation chamber 21 toward the connection flow path 17 . The blower 44b is connected to the motor 45b. When the motor 45 b is driven, the air blower 44 b sends the air inside the environment generation chamber 26 toward the connection flow path 19 .

In the constant temperature and humidity apparatus 1, the dampers 31 to 34 are positioned at the closed position described above, and in the constant temperature and humidity chamber 4, the environment is generated by the humidifier 41a, the cooling dehumidifier 42a, and the heater 43a while driving the air blower 44a. In chamber 21, an environment of temperature and humidity necessary for the test is created. The environment generated in the environment generation chamber 21 has a temperature higher than that of the test chamber 11 .

After the generation of the temperature and humidity environment in the environment generation chamber 21 is completed, the dampers 31 and 32 are moved to the open position while the dampers 33 and 34 are kept at the closed position. Then, the air in the environment generation chamber 21 is sent to the test chamber 11 through the connection flow path 17 by the air blower 44a. Also, along with this, the air in the test chamber 11 flows into the environment generation chamber 21 via the connection flow path 16 . As a result, air circulates between the test chamber 11 and the environment generation chamber 21 , and the test chamber 11 becomes an environment with the same temperature and humidity as those generated in the environment generation chamber 21 .

At this time, in the constant temperature and humidity chamber 5, the humidifier 41b, the cooling dehumidifier 42b, and the heater 43b are operated while driving the air blower 44b to maintain the temperature and humidity necessary for the test in the environment generation chamber 26. Generate an environment. The environment generated in the environment generation chamber 26 has a temperature lower than that of the test chamber 11 .

After a predetermined time has elapsed, the dampers 31 and 32 are moved to the closed position, and then the dampers 33 and 34 are moved to the open position. Then, the air in the environment generation chamber 26 is sent to the test chamber 11 through the connection channel 19 by the blower 44b. Also, along with this, the air in the test chamber 11 flows into the environment generation chamber 26 via the connection flow path 18 . As a result, air circulates between the test chamber 11 and the environment generation chamber 26 , and the test chamber 11 becomes the same temperature and humidity environment as that generated in the environment generation chamber 26 .

At this time, in the constant temperature and humidity chamber 4, the humidifier 41a, the cooling dehumidifier 42a, and the heater 43a are used to set the temperature and humidity necessary for the test in the environment generating chamber 21 in the same manner as described above. Generate an environment.

After a predetermined time has elapsed, the dampers 33 and 34 are moved to the closed position, and then the dampers 31 and 32 are moved to the open position. Then, air circulates between the test chamber 11 and the environment generation chamber 21 in the same manner as described above, and the test chamber 11 becomes an environment with the same temperature and humidity as those generated in the environment generation chamber 21 .

After generating the temperature and humidity environment in the environment generation chamber 21 as described above, a state in which air is circulated between the test chamber 11 and the environment generation chamber 21, and a temperature and humidity environment in the environment generation chamber 26 are created. After generation, the state of circulating air between the test chamber 11 and the environment generation chamber 26 is alternately repeated a predetermined number of times. As a result, the sample body W placed in the test chamber 11 alternates between the temperature and humidity environment generated in the environment generation chamber 21 and the temperature and humidity environment generated in the environment generation chamber 26. It is possible to perform a test against environmental changes in temperature and humidity of the sample W exposed and placed in the test chamber 11 .

<Damper>
Next, the dampers 31-34 will be described in detail. The damper 31 includes a heat insulating unit 51 (the “heat insulating member” of the present invention), a water absorbing sheet 52 and a packing 53, as shown in FIGS. When the damper 31 is described below, the direction in which the heat insulating unit 51, the water absorbing sheet 52, and the packing 53 are stacked is defined as the stacking direction, and the damper 31 is positioned at the above-described closed position. The connection channel 16 side and the side opposite to the connection channel 16 will be described as one side in the stacking direction and the other side in the stacking direction, respectively. The same applies to the dampers 32-34.

The heat insulating unit 51 includes a frame portion 56 and heat insulating material 57 . The frame portion 56 is a substantially rectangular parallelepiped hollow member. The heat insulating material 57 fills the entire internal space of the frame portion 56 . Moreover, the heat insulating unit 51 is supported by the rotating shaft 31a. The rotating shaft 31a extends through the frame 56 and the heat insulating material 57 in the direction perpendicular to the paper surface of FIGS. there is

The water-absorbing sheet 52 is made of a material having water-absorbing properties such as non-woven fabric and sponge, and is arranged over the entire area of the facing surface 51a of the heat insulating unit 51, which is one surface in the stacking direction. The facing surface 51a is a surface formed by one surface of the frame portion 56 in the stacking direction. Furthermore, the water absorbing sheet 52 is larger in size than the heat insulating unit 51 when viewed in the stacking direction, and protrudes from the heat insulating unit 51 over the entire circumference.

The packing 53 is arranged on one side of the water absorbent sheet 52 in the stacking direction (the side opposite to the heat insulating unit 51 ) and extends along the edge of the heat insulating unit 51 . The packing 53 is made of rubber or the like.

The water absorbing sheet 52 is fixed to the frame portion 56 while being sandwiched between the packing 53 and the heat insulation unit 51 .

When the damper 31 is in the closed position described above, the facing surface 51a of the heat insulation unit 51 faces the upper inner wall surface 11a of the test chamber 11, as shown in FIG. 2(a) . The packing 53 arranged on the facing surface 51a is pressed against the portion of the upper inner wall surface 11a of the test chamber 11 surrounding the opening 16a of the connecting channel 16, and is elastically deformed to be in close contact. As a result, the opening 16a of the connecting channel 16 is blocked by the damper 31, and communication between the test chamber 11 and the environment generating chamber 21 via the connecting channel 16 is blocked.

In this state, the damper 31 has a portion outside the packing 53 of the facing surface 51 a of the heat insulating unit 51 in contact with the air inside the test chamber 11 , and a portion inside the packing 53 inside the environment generating chamber 21 . of air.

Further, as shown in FIG. 2(b), the damper 31 is separated from the upper inner wall surface 11a of the test chamber 11 and does not block the opening 16a of the connection channel 16 in the open position. . In this state, the test chamber 11 and the environment generation chamber 21 communicate with each other through the connection channel 16 .

The damper 32 has the same structure as the damper 31, and is arranged symmetrically with the damper 31 in the horizontal direction of FIG. The rotating shaft 32a extends through the frame portion 56 and the heat insulating material 57 of the damper 32, thereby rotatably supporting the damper 32 on the rotating shaft 32a.

When the damper 32 is in the closed position described above, the packing 53 is pressed against the inner wall surface 11 a of the test chamber 11 surrounding the opening 17 a of the connecting channel 17 . As a result, the opening 17a of the connecting channel 17 is blocked by the damper 32, and communication between the test chamber 11 and the environment generating chamber 21 via the connecting channel 17 is cut off, as described above. In this state, the damper 32 is in contact with the air in the test chamber 11 at the portion outside the packing 53 of the facing surface 51a of the heat insulating unit 51, and at the portion inside the packing 53 of the environment generating chamber 21. contact with the air inside.

In addition, the damper 32 is separated from the upper inner wall surface 11 a of the test chamber 11 and does not close the opening 17 a at the lower end of the connection channel 17 in the open position described above. In this state, the test chamber 11 and the environment generation chamber 21 communicate with each other through the connection channel 17 .

The damper 33 has the same structure as the dampers 31 and 32, and is arranged symmetrically with the damper 31 in the vertical direction of FIG. The rotating shaft 33a extends through the frame portion 56 of the damper 33 and the heat insulating material 57, thereby rotatably supporting the damper 33 on the rotating shaft 33a.

When the damper 33 is positioned at the above-described closed position, the packing 53 is pressed against a portion of the lower inner wall surface 11 b of the test chamber 11 surrounding the opening 18 a of the connecting channel 18 . As a result, the opening 18a of the connecting channel 18 is blocked by the damper 33, and communication between the test chamber 11 and the environment generating chamber 26 via the connecting channel 18 is cut off, as described above. Further, in this state, the damper 33 has a portion of the facing surface 51a of the heat insulating unit 51 that is in contact with the air in the test chamber 11 outside the packing 53, and a portion inside the packing 53 that generates the environment. contact with the air in the chamber 26;

In addition, the damper 33 is separated from the inner wall surface 11b of the test chamber 11 and does not close the opening 18a at the upper end of the connection channel 18 when it is positioned at the above-described open position. In this state, the test chamber 11 and the environment generation chamber 26 communicate with each other through the connection channel 18 .

The damper 34 has the same structure as the dampers 31 to 33, and is arranged symmetrically with the damper 33 in the horizontal direction of FIG. The rotating shaft 34a extends through the frame portion 56 and the heat insulating material 57 of the damper 34, thereby rotatably supporting the damper 34 on the rotating shaft 34a.

When the damper 34 is in the closed position described above, the packing 53 is pressed against the inner wall surface 11 b of the test chamber 11 surrounding the opening 19 a of the connecting channel 19 . As a result , the opening 19a of the connecting channel 19 is blocked by the damper 34, and communication between the test chamber 11 and the environment generating chamber 26 via the connecting channel 19 is cut off, as described above. In this state, the damper 34 is in contact with the air in the test chamber 11 at the portion outside the packing 53 of the facing surface 51 a of the heat insulation unit 51 , and at the portion inside the packing 53 . contact with the air inside.

In addition, the damper 34 is separated from the lower inner wall surface 11 b of the test chamber 11 and does not block the opening 19 a at the upper end of the connection channel 19 in the open position described above. In this state, the test chamber 11 and the environment generation chamber 26 communicate with each other through the connection channel 19 .

<effect>
Here, in the constant temperature and humidity apparatus 1, as described above, with the dampers 31 and 32 positioned at the closed position, an environment having a temperature higher than that of the test chamber 11 is generated in the environment generation chamber 21, and then the dampers When the dampers 31 and 32 are moved to the open position, dew condensation may occur on the parts of the dampers 31 and 32 that have been in contact with the air in the test chamber 11 until then.

When such condensation occurs, when the dampers 31 and 32 are moved from the closed position to the open position, the water droplets generated by the condensation scatter inside the test chamber 11, and the sample body in the test chamber 11 There is a possibility that it will adhere to W. Then, when water droplets adhere to the sample W, there is a possibility that the sample W may be damaged, and an accurate test result cannot be obtained.

Therefore, in the present embodiment, when the dampers 31 and 32 are in the closed position, the portion of the facing surface 51a of the heat insulating unit 51 outside the packing 53 is in contact with the air in the test chamber 11. A water-absorbent sheet 52 is arranged in the portion. As a result, when the dampers 31 and 32 are opened, moisture condensed on the relevant portions is absorbed by the water absorbing sheet 52, and water droplets can be prevented from adhering to the sample body W. FIG. In addition, even if condensation occurs when the dampers 31 and 32 are opened in the parts of the packing 53 that are in contact with the air in the test chamber 11 while the dampers 31 and 32 are in the closed position, the condensed water will be absorbed by the water absorbing sheet. It flows down to 52 and is absorbed by the water absorbent sheet 52 .

In addition, when the dampers 31 and 32 are in the closed position, the outer portion of the surface of the packing 53 that is in contact with the inner wall 11a is in contact with the air inside the test chamber 11 . Then, when the dampers 31 and 32 are moved from the closed position to the open position, water droplets generated by dew condensation on this portion of the packing 53 may fly over the heat insulating unit 51 into the test chamber 11 . On the other hand, in the present embodiment, in the dampers 31 and 32 , the water absorbing sheet 52 protrudes from the heat insulating unit 51 . As a result, when water droplets generated by dew condensation on the packing 53 are about to scatter into the test chamber 11 beyond the heat insulation unit 51, the water droplets are captured by the part of the water absorbing sheet 52 protruding from the heat insulation unit 51, It is possible to prevent water droplets from adhering to the sample W in the test chamber 11 .

Further, in the constant temperature and humidity apparatus 1, as described above, with the dampers 33 and 34 positioned at the closed position, after generating an environment with a lower temperature than the test chamber 11 in the environment generating chamber 26, the damper 33 , 34 to the open position, dew condensation may occur on the portions of the dampers 33 and 34 that have been in contact with the air in the environment generation chamber 26 until then.

When such condensation occurs, when the dampers 33 and 34 are moved from the closed position to the open position, water droplets generated by the condensation scatter inside the test chamber 11, There is a possibility that it will adhere to the sample body W. Then, when water droplets adhere to the sample W, there is a possibility that the sample W may be damaged, and an accurate test result cannot be obtained.

Therefore, in the present embodiment, when the dampers 33 and 34 are in the closed position, the inner side portion of the facing surface 51a of the heat insulating unit 51 than the packing 53 is in contact with the air in the environment generating chamber 26. On the other hand, a water absorbing sheet 52 is arranged in this portion. As a result, water generated by dew condensation on the dampers 33 and 34 is absorbed by the water absorbing sheet 52, and water droplets can be prevented from adhering to the sample W. FIG.

In this embodiment, the dampers 31-34 move between the closed position and the open position by rotating about the rotation shafts 31a-34a, respectively. Therefore, when the dampers 31 to 34 rotate, water droplets generated on the dampers 31 to 34 due to dew condensation tend to scatter. Therefore, it is particularly significant to provide the water absorbing sheet 52 to prevent water droplets generated by condensation from adhering to the sample W. FIG.

<Modification>
Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims.

In the above-described embodiment, in the dampers 31 to 34, the water absorbing sheet 52 protrudes from the heat insulating unit 51, but the present invention is not limited to this. The water absorbent sheet may be arranged only within the range of the heat insulation unit 51 when viewed from the stacking direction.

In the above-described embodiment, in the dampers 31 to 34, the water absorption sheet 52 is arranged over the entire area of the facing surface 51a of the heat insulation unit 51, but the present invention is not limited to this. In the dampers 31 and 32, the water absorbing sheet is arranged only on the part of the facing surface 51a of the heat insulating unit 51 outside the packing 53 (the part that comes into contact with the air inside the test chamber 11 in the closed position). may Alternatively, in the dampers 33 and 34, the water absorbing sheet is provided only on the portion of the facing surface 51a of the heat insulating unit 51 that is inside the packing 53 (the portion that contacts the air inside the environment generation chamber 26 in the closed position). may be placed.

In the above-described embodiment, the air in the environment generation chamber 21 is set to a higher temperature than the air in the test chamber 11, and the air in the environment generation chamber 26 is set to a lower temperature than the air in the test chamber 11. is not limited. Contrary to the above embodiment, the air in the environment generation chamber 21 may be lower in temperature than the air in the test chamber 11, and the air in the environment generation chamber 26 may be higher in temperature than the air in the test chamber 11. .

In this case, in the dampers 31 and 32, the water-absorbing sheets of the facing surface 51a of the heat insulation unit 51 are at least the inner side of the packing 53 (when the dampers 31 and 32 are positioned in the closed position, the water-absorbing sheets come into contact with the air in the environment generation chamber 21). part). Also, in the dampers 33 and 34, the water absorbing sheet is arranged at least in the portion outside the packing 53 (the portion in contact with the air in the test chamber 11 in the closed position) of the facing surface 51a of the heat insulating unit 51. It is good if it is.

In the above-described embodiment, the environment in the test chamber 11 is set to a high temperature first, and then the environment is switched to a low temperature environment.

Moreover, the constant temperature and humidity apparatus 1 may be such that the environment generating chambers 21 and 26 can be set to either a higher temperature environment or a lower temperature environment than the test chamber 11 . In this case, the water-absorbing sheet is attached to a portion of the facing surface 51 a of the heat insulating unit 51 outside the packing 53 (a portion that is in contact with the air in the test chamber 11 in the closed position) and It suffices if it is arranged over the inner part (the part in contact with the air inside the environment generating chamber 21 in the closed position). Also, in the dampers 33 and 34, the water absorbing sheet is located inside the packing 53 (the portion in contact with the air in the environment generation chamber 26 in the closed position) of the facing surface 51a of the heat insulation unit 51, and It suffices if it is arranged over the portion outside the packing 53 (the portion that is in contact with the air in the test chamber 11 in the closed position).

In the above-described embodiment, the damper moves between the open position and the closed position by rotating, but the present invention is not limited to this. For example, in the above-described embodiment, the damper translates vertically or horizontally to communicate and block communication between the test chamber 11 and the environment generation chamber 21 via the connecting channels 16 and 17, Also, communication between the test chamber 11 and the environment generation chamber 26 via the connecting channels 18 and 19 and disconnection thereof may be switched.

In the above-described embodiment, the dampers 31-34 are arranged inside the test chamber 11. FIG. When the dampers 31 and 32 are in the closed position, the packing 53 is in close contact with the portions surrounding the openings 16a and 17a at the lower ends of the connecting channels 16 and 17 of the upper inner wall surface 11a of the test chamber 11. be. When the dampers 33 and 34 are positioned at the closed position, the packing 53 is in close contact with the portions surrounding the openings 18a and 19a at the upper ends of the connecting channels 18 and 19 of the lower inner wall surface 11b of the test chamber 11. is. However, it is not limited to this.

For example, in Modification 1, as shown in FIGS. 4A and 4B, a damper 61 provided for the connection channel 16 is arranged in the environment generation chamber 21 . The damper 61 rotates around a rotating shaft 61a arranged in the environment generation chamber 21 and moves between the closed position shown in FIG. 4(a) and the open position shown in FIG. 4(b). It is possible. The damper 61 has a structure similar to that of the damper 31 and is arranged vertically symmetrical to the damper 31 . When the damper 61 is in the closed position, the packing 53 surrounds the opening 16b at the upper end of the connection channel 16 (on the environment generation chamber 21 side) in the inner wall surface 21a on the lower side of the environment generation chamber 21. adhere to the part.

The damper provided for the connection flow path 17 is also arranged in the environment generating chamber 21 in the same manner as described above, and the packing 53 is positioned inside the lower side of the environment generating chamber 21 in the closed position. The wall surface 21a may be in close contact with the portion surrounding the opening of the upper end of the connection channel 17 (on the side of the environment generation chamber 21).

Also, the dampers provided for the connection channels 18 and 19 are arranged in the environment generating chamber 26, and when the packing 53 is positioned at the closed position, the packing 53 is The lower end (environment generation chamber 26 side) of the connecting channels 18 and 19 may be in close contact with the portion surrounding the opening.

In the case of Modification 1, when the damper 61 is positioned at the closed position, the portion of the facing surface 51a of the heat insulating unit 51 inside the packing 53 has a lower temperature than the air in the environment generating chamber 21. Contact with the air in the test chamber 11 . Therefore, in the damper 61 , the water absorbing sheet 52 should be arranged at least in a portion inside the packing 53 of the facing surface 51 a of the heat insulating unit 51 . The same applies to the case where a damper for the connection channel 17 is provided inside the environment generation chamber 21 .

Further, when the dampers for the connecting channels 18 and 19 are provided in the environment generating chamber 26, the portion of the facing surface 51a of the heat insulating unit 51 outside the packing 53 is placed in the closed position. It comes into contact with the air in the environment generation chamber 26 which is cooler than the air in the chamber 11 . Therefore, in these dampers, the water absorbing sheet 52 may be arranged at least on the outer side of the packing 53 on the facing surface 51 a of the heat insulating unit 51 .

In Modified Example 2, as shown in FIG. 5A, in the constant temperature and humidity device 70, the vertical lengths of the connection channels 16 to 19 are longer than in the above-described embodiment. Dampers 71 to 74 are arranged in the connecting channels 16 to 19, respectively.

As shown in FIGS. 5A and 5B, the damper 71 includes a heat insulating member 81, a packing 82, and a water absorbing sheet 83. As shown in FIGS. The heat insulating member 81 is a plate-shaped member made of a heat insulating material. The heat insulating member 81 is rotatably supported by a rotary shaft 81a extending in the direction perpendicular to the paper surface of FIG. The packing 82 is made of a rubber material or the like, and is provided on the edge of the heat insulating member 81 .

The damper 71 can move between the closed position indicated by the solid line in FIG. 5 and the open position indicated by the broken line in FIG. 5 by rotating about the rotating shaft 81a. When the damper 71 is positioned at the closed position, the packing 82 is in close contact with the inner wall surface 16 c of the connecting channel 16 , and the connecting channel 16 is blocked by the damper 71 . As a result, communication between the test chamber 11 and the environment generation chamber 21 via the connection channel 16 is blocked by the damper 71 . When the damper 71 is located at the open position, the damper 71 does not block the connection channel 16 and the test chamber 11 and the environment generation chamber 21 communicate with each other through the connection channel 16 .

The water absorbing sheet 83 is arranged on the surface of the heat insulating member 81 that faces downward when the damper 71 is in the closed position. This face of the insulating member 81 contacts the air within the test chamber 11 with the damper 71 in the closed position.

The dampers 72 to 74 also have a structure similar to that of the damper 71, and are movable between the closed position and the open position by rotating around the rotating shaft 81a. When the damper 72 is located at the closed position, the packing 82 is in close contact with the inner wall surface 17c of the connecting channel 17, and the connecting channel 17 is closed by the damper 72. As shown in FIG. As a result, communication between the test chamber 11 and the environment generation chamber 21 via the connection channel 17 is blocked by the damper 72 . When the damper 72 is in the open position, the damper 72 does not block the connecting channel 17 and the test chamber 11 and the environment generating chamber 21 communicate with each other through the connecting channel 17 .

When the damper 73 is located at the closed position, the packing 82 is in close contact with the inner wall surface 18c of the connection channel 18, and the connection channel 18 is blocked by the damper 73. As a result, communication between the test chamber 11 and the environment generation chamber 26 via the connection channel 18 is blocked by the damper 73 . When the damper 73 is positioned at the open position, the damper 73 does not block the connection channel 18 and the test chamber 11 and the environment generation chamber 26 communicate with each other through the connection channel 18 .

When the damper 74 is located at the closed position, the packing 82 is in close contact with the inner wall surface 19c of the connecting channel 19, and the connecting channel 19 is blocked by the damper 74. As shown in FIG. As a result, communication between the test chamber 11 and the environment generation chamber 26 via the connection channel 19 is blocked by the damper 74 . When the damper 74 is in the open position, the damper 74 does not block the connecting channel 19 and the test chamber 11 and the environment generating chamber 26 communicate with each other through the connecting channel 19 .

Also, in the dampers 72 to 74, a water absorbing sheet 83 is arranged on the surface of the heat insulating member 81 which is located on the lower side when the damper 71 is in the closed position. Specifically, in the damper 72 , the water absorbing sheet 83 is arranged at a portion of the heat insulating member 81 that contacts the air inside the test chamber 11 when the damper 71 is positioned at the closed position. Moreover, in the dampers 73 and 74, the water absorbing sheet 83 is arranged in a portion of the heat insulating member 81 that is in contact with the air inside the environment generating chamber 26 when the damper 71 is positioned at the closed position.

The constant temperature and humidity apparatus of Modification 2 may also be one in which the environment generating chambers 21 and 26 can be set to either a higher temperature environment or a lower temperature environment than the test chamber 11 . In this case, in the dampers 71 to 74, water absorbing sheets may be arranged on both sides of the heat insulating member 81, which are located on the upper side and the lower side when the dampers 71 to 74 are in the closed position.

Moreover, in the above-described embodiment, the environment generation chambers 21 and 26 are arranged above and below the test chamber 11, respectively, but the present invention is not limited to this. For example, the constant temperature and humidity device may have only one environment generating chamber. Also, the test chamber and the environment generation chamber may be arranged in a direction other than the vertical direction, such as a horizontal direction.

Moreover, although the example in which the present invention is applied to a constant temperature and humidity device has been described above, the present invention is not limited to this. For example, it is possible to apply the present invention to an environmental test apparatus other than a constant temperature and humidity apparatus, such as a thermal shock test apparatus that abruptly changes the space in which the sample is placed between high and low temperatures. In this case, an appropriate environment generation device necessary for environment generation is arranged in the environment test room.

1 constant temperature and humidity device 11 test chamber 16 to 19 connection channel 21, 26 environment generation chamber 41a, 41b humidifier 42a, 42b cooling dehumidifier 43a, 43b heater 31 to 34 damper 51 heat insulating member 51a facing surface 52 water absorbing sheet 53 Packing 61 Damper 70 Constant temperature and humidity device 71 to 74 Damper W Sample body

Claims (6)

a test chamber in which the sample body is placed;
an environment generation room in which an environment generation device for generating an environment including temperature is arranged;
a connection channel connecting the test chamber and the environment generation chamber;
a closed position that blocks communication between the test chamber and the environment generation chamber via the connection channel, and an open position that does not block communication between the test chamber and the environment generation chamber via the connection channel; an opening/closing member movable between
A water absorbing sheet is provided on the opening and closing member,
The water absorbing sheet is disposed at least on a portion of the opening/closing member that is in contact with the lower temperature air of the air in the test chamber and the air in the environment generation chamber when the opening/closing member is positioned at the closed position. An environmental test device characterized by: wherein the environment generation device includes a heating device that heats the air in the environment generation chamber;
The opening/closing member is
placed in the test chamber,
a heat insulating member;
a packing disposed on the heat insulating member;
The packing is arranged on a surface of the heat insulating member facing the connection flow path in the closed position,
2. The environmental test apparatus according to claim 1, wherein the water absorbing sheet is arranged at least on a portion of the facing side surface of the heat insulating member that is outside the packing. 3. The environmental test apparatus according to claim 1, wherein the water-absorbing sheet protrudes from the opening/closing member. wherein the environment generation device includes a cooling device that cools the air in the environment generation chamber;
The opening/closing member is
placed in the test chamber,
a heat insulating member;
a packing disposed on the heat insulating member;
The packing is arranged on a surface of the heat insulating member facing the connection flow path in the closed position,
2. The environmental test apparatus according to claim 1, wherein the water absorbing sheet is arranged at least on a portion of the facing side surface of the heat insulating member that is located inside the packing. 5. The environmental test apparatus according to claim 2 , wherein the water absorbing sheet is arranged over the entire surface of the heat insulating member on the opposite side. 6. The opening/closing member according to any one of claims 1 to 5, wherein the opening/closing member is rotatably supported by a rotating shaft and moves between the closed position and the open position by rotating about the rotating shaft. The environment generator according to any one of the above.

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