JP2018185267A - Environmental test device and environmental test method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an environmental test device capable of driving even a test article having a risk of generating scattering objects, in the state in which the test article is installed in a laboratory.SOLUTION: The environmental test device includes a laboratory 5 in which a test article is disposed, and an air conditioning unit (air conditioning space) 15 having a built-in air conditioning apparatus 10. The laboratory 5 includes an air introduction port 16 and an air exhaust port 18. The air in the laboratory 5 is exhausted through the air exhaust port 18 and is introduced to the air conditioning unit 15. The temperature and/or humidity of the air is conditioned in the air conditioning unit 15. The conditioned air is returned to the laboratory 5 through the air introduction port 16, and conditions the temperature and/or humidity in the laboratory 5. Insulating means 30 and 31 for insulating the air introduction port 16 and the air exhaust port 18 are disposed.SELECTED DRAWING: Figure 7

Description

  The present invention relates to an environmental test apparatus capable of creating a specific environment in a test chamber and exposing a device under test to a desired environment. The present invention also relates to an environmental test method using a motor as a test object.

Environmental tests are known as tests for examining the performance and durability of products and parts. Environmental tests are performed using equipment called environmental test equipment.
Generally, an environmental test apparatus has a test room and an air conditioning unit. The air conditioning unit includes air conditioning equipment such as a blower, a heating device, and a cooling device.
The test chamber and the air conditioning unit form a series of circulation air passages. The air in the test chamber is introduced into the air conditioning unit, the temperature and humidity are adjusted, and the adjusted air is returned to the test chamber. Thus, a desired temperature environment and humidity environment are created.
The test chamber is a substantially hermetically sealed space except for the connecting portion with the air conditioning unit.

A general environmental test is performed by placing a test object (also referred to as a specimen) in a test chamber of an environmental test apparatus and exposing the test object to the environment in the test chamber.
In addition, the environmental test may not only place the test object in a predetermined environment but also perform some operation by energization or the like.
For example, there is a case where a predetermined test is performed in a state where the device under test is exposed to a high temperature environment, and the device is further energized and driven to evaluate the performance.

JP 2013-72648 A

Some of the DUTs scatter liquids and solids such as oils and fats when driven. When such a DUT is installed and driven in the test chamber, the scattered object may scatter in the test chamber and further enter the air conditioning unit.
The air-conditioning unit generally has a built-in heat exchanger, and if scattered objects adhere to the fins, it may be difficult to remove it.
In addition, when there is a heating device in the air-conditioning unit, fats and oils or the like may adhere to the heating device and be burnt, producing a strange odor or smoke. Further, for example, combustible oil may be scattered.
In any case, if the scattered material enters the air conditioning unit, it may be quite troublesome.

As a measure for preventing scattered objects from entering the air-conditioning unit, it is conceivable to temporarily remove the test object from the test chamber when driving the test object.
In other words, the DUT is placed in the test chamber and exposed to the desired environment. In this state, for example, the DUT is heated from the outside to raise the temperature, and then the DUT is taken out from the test chamber and the DUT is energized. And drive.

However, this method has a problem that it is troublesome to take in and out the DUT from the test room.
In particular, when the DUT is hot or cold, the worker may be exposed to the risk of burns or frostbite.
In addition, as described above, when a predetermined test is performed even when the DUT is not driven, various sensors may be attached to the DUT in the test chamber. It is pulled out from the hole provided in the side wall of the test chamber.
When taking the device under test out of the test chamber, it may be necessary to attach and detach the signal line as described above, which is troublesome.

Therefore, the present invention pays attention to the above-mentioned problems of the prior art, and an environmental test apparatus that can be driven in a state where it is installed in a test chamber even if there is a test object that is likely to generate scattered objects. The issue is to provide.
Another object of the present invention is to provide an environmental test method in which a motor that is likely to generate scattered objects is used as a device under test, and the motor can be installed and driven in a test chamber. To do.

  The invention according to claim 1 for solving the above-described problem has a test chamber in which a device under test is arranged, and an air-conditioning unit in which air-conditioning equipment is built, and the test chamber has a ventilation inlet and a ventilation. There is a discharge port, air in the test chamber is discharged from the blower discharge port and introduced into the air conditioning unit, and air whose temperature and / or humidity has been adjusted by the air conditioning unit is returned from the blower introduction port to the test chamber for testing In the environmental test apparatus in which the temperature and / or humidity in the room is adjusted, the environmental test apparatus is characterized by being provided with shielding means for shielding the air blowing inlet and the air outlet.

  The environmental test apparatus of the present invention has shielding means for shielding the air inlet and the air outlet. In the environmental test apparatus according to the present invention, the air blowing inlet and the air outlet are shielded by the shielding means, thereby preventing the scattered matter generated from the test object from entering the air conditioning unit.

  According to a second aspect of the present invention, the test chamber has an open portion on at least one surface, and another test auxiliary device can be connected to the open portion, and the test chamber can move relative to the test auxiliary device. The open part is provided by attaching a test object to the test auxiliary device and connecting the test auxiliary device to the open part of the test chamber by relatively moving at least one of the test chamber and the test auxiliary device in the proximity direction. The environmental test apparatus according to claim 1, wherein the test chamber is substantially sealed and the device under test is placed in the test chamber.

  The invention according to claim 3 is operated from outside the test chamber to operate the shielding means, and is switched between an open state in which the air inlet and the air outlet are opened and a shield state in which the air inlet and the air outlet are shielded. The environmental test apparatus according to claim 1 or 2, characterized in that

  According to the present invention, the open state and the shielded state can be switched without opening the door of the test chamber or the like. Therefore, the continuity of the environmental test can be ensured.

  In the above-described configuration, there is an open / close detection means for detecting that the shielding means shields the air inlet and the air outlet, or that the shielding means does not shield the air inlet and the air outlet. It is desirable that any or all of the air conditioners cannot be driven or any or all of the air conditioners can be driven depending on the detection status of the open / close detection means.

  The structure which has a heat insulation tank, the said heat insulation tank is partitioned off, and the said test chamber and an air-conditioning part are formed may be sufficient (Claim 5).

  A test room and an air-conditioning part are separate apparatuses, and both may be combined with the ventilation path (Claim 6).

  The invention relating to the environmental test method is an environmental test method performed using the environmental test apparatus according to any one of claims 1 to 6 with a motor as a test object, wherein the test object is disposed in a test chamber. The air conditioner is operated with the air introduction port and the air discharge port opened to make the environment in the test room the desired environment, and the test object is made to conform to the environment of the test room. And the motor which is a to-be-tested object is driven, shielding a ventilation discharge port.

  According to the present invention, even if something is scattered from the motor, the shielding means prevents the scattered matter from entering the air conditioning unit.

According to the environmental test apparatus of the present invention, even a DUT having a fear of generating scattered objects can be driven while installed in a test chamber.
In the environmental test method of the present invention, a motor can be installed and driven in the test chamber.

It is a perspective view of an environmental test device and a test auxiliary device of an embodiment of the present invention. It is sectional drawing which represented notionally the environmental test apparatus and test auxiliary | assistance apparatus of embodiment of this invention. It is a perspective view of the shielding means employ | adopted with the environmental test apparatus of FIG. FIG. 4 is a perspective view employed in the environmental test apparatus of FIG. 1, in which the observation direction is different from that in FIG. 3, and a part thereof is omitted. FIG. b) shows the state where the ventilation inlet is shielded. It is explanatory drawing which shows a part of side surface of the environmental test apparatus of FIG. 1, (a) shows the case where a ventilation introduction port is open | released, (b) shows the case where the ventilation introduction port is shielded. It is sectional drawing which shows the state at the time of use of the environmental test apparatus of FIG. FIG. 7 is a cross-sectional view showing a state following FIG. 6 when the environmental test apparatus of FIG. 1 is used. It is sectional drawing which shows a state following FIG. 7 at the time of use of the environmental test apparatus of FIG. It is sectional drawing which represented notionally the environmental test apparatus and test auxiliary | assistance apparatus of other embodiment of this invention. It is sectional drawing which represented notionally the environmental test apparatus and test auxiliary | assistance apparatus of other embodiment of this invention, (a) shows the state which opened the ventilation introduction port and the ventilation discharge port, (b) shows ventilation. The state which shielded the inlet and the ventilation outlet is shown. It is sectional drawing which represented notionally the environmental test apparatus of other embodiment of this invention, (a) shows the state which opened the ventilation inlet and the ventilation outlet, (b) shows the ventilation inlet and ventilation. The state where the discharge port is shielded is shown. It is sectional drawing which represented notionally the environmental test apparatus of other embodiment of this invention, (a) shows the state which opened the ventilation inlet and the ventilation outlet, (b) shows the ventilation inlet and ventilation. The state where the discharge port is shielded is shown.

Embodiments of the present invention will be further described below.
The environmental test apparatus 1 of the present embodiment is used in combination with a test auxiliary apparatus 100 as shown in FIGS.
First, the basic structure of the environmental test apparatus 1 of the present embodiment will be described. The environmental test apparatus 1 of this embodiment has the heat insulation tank 3 and the air conditioner 10 which exhibits an air-conditioning function like FIG.
That is, the environmental test apparatus 1 of the present embodiment has a heat insulating tank 3 covered with a heat insulating wall 2 as shown in FIG.
Inside the heat insulating tank 3, there is a partition wall 7, and the inside of the heat insulating tank 3 is divided into a test chamber 5 and an air-conditioned space (air-conditioning unit) 15 by the partition wall 7.
The test chamber 5 is a space for installing a device under test. The test chamber 5 is a space surrounded by six surfaces by the inner wall of the heat insulating tank 3 and the partition wall 7.
In the present embodiment, as shown in FIGS. 1 and 2, the front side of the test chamber 5 is wide open and an opening 20 is formed.

An air conditioning device 10 is built in the air conditioned space 15 of the environmental test apparatus 1. The air conditioner 10 includes a cooler 6, a heating device 17, a humidifying device 8, and a blower 11.
The cooler 6 is an evaporator of a cooling device (not shown), in which a phase-change refrigerant flows.
The cooling device is composed of a compressor, a condenser, an expansion means, and a cooler (evaporator) 6 connected in an annular shape, and compresses, condenses, expands and evaporates the refrigerant, and cools the cooler (evaporator). 6 can reduce the surface temperature.
The heating device 17 is a known electric heater.
The humidifier 8 releases steam.

  The air-conditioned space 15 constitutes an air-conditioning ventilation path that communicates with the test chamber 5 in a ring shape, and includes an air-conditioning device 10 (including the blower 11).

The partition wall 7 is provided with openings at the top and bottom. The opening on the upper side of the partition wall 7 is for introducing air from the air-conditioned space 15 into the test chamber 5, and functions as an air inlet 16.
The lower opening serves to send air from the test chamber 5 to the air-conditioned space 15 and functions as a blower outlet 18.
That is, the air-conditioned space 15 is formed in a part of the heat insulating tank 3 and communicates with the test chamber 5 at two locations, the air introduction port 16 and the air discharge port 18.

Therefore, when the blower 11 is activated, the air in the test chamber 5 is introduced into the air-conditioned space 15 from the blower outlet 18. The air-conditioned space 15 is in a ventilated state, air contacts the air-conditioning device 10 to perform heat exchange and humidity adjustment, and the adjusted air is blown into the test chamber 5 from the air blowing inlet 16.
Further, a temperature sensor 12 and a humidity sensor 13 are provided in the vicinity of the air inlet 16 in the air-conditioned space 15.
When the environmental test apparatus 1 is used, the air conditioner is operated so that the blower 11 is operated to bring the air conditioned space 15 into ventilation, and the detected values of the temperature sensor 12 and the humidity sensor 13 approach the temperature and humidity of the set environment. 10 is controlled.
As a result, a desired environment is created in the test chamber 5.

Next, a characteristic configuration of the present embodiment will be described.
In the present embodiment, shielding members (shielding means) 30 and 31 are provided at the ventilation introduction port 16 and the ventilation discharge port 18, respectively.
In the present embodiment, the air introduction port 16 is opened in a slightly inclined downward posture. As shown in FIGS. 3 and 4, a square frame 33 that surrounds the opening 32 is fitted in the air introduction port 16. A packing 35 is provided on the surface side of the frame 33 (the test chamber 5 side).

The shielding member 30 is a plate having an area that completely covers the opening 32 of the air introduction port 16. In this embodiment, one side of the shielding member 30 is pivotally fixed to the lower side portion of the air introduction port 16 and swings in a direction for sealing and opening the air introduction port 16.
Further, the swing shaft 36 of the shielding member 30 is extended as shown in FIG. 3, passes through the heat insulating wall 2, and protrudes to the outside of the heat insulating tank 3. A small outer box 27 is provided outside the heat insulating tank 3.
As shown in FIGS. 1, 3, and 4, the swing shaft 36 passes through the heat insulating wall 2 and the outer box 27 and protrudes to the outside of the heat insulating tank 3. Further, a manual handle 37 is provided at the end of the swing shaft 36.
Therefore, when the manual handle 37 outside the heat insulating tank 3 is rotated, the shielding member 30 swings in the test chamber 5, the shielding posture for sealing the air introduction port 16, and the opening for opening the air introduction port 16. Can take posture.

In the present embodiment, the manual handle 37 includes an arm portion 40 and a hand-held portion 41, and the arm portion 40 is provided with a protruding pin 42.
The protruding pin 42 is urged toward the outer box 27 by a spring (not shown). Further, the protruding pin 42 has a knob 45, and by pulling the knob 45, the protruding pin 42 can be pulled toward the arm portion 40 side.

The outer box 27 is provided with hole forming members 46 and 47 as shown in FIGS.
The hole forming members 46 and 47 are formed with holes 50 and 51 with which the protruding pins 42 are engaged.
In the present embodiment, the hole 50 of one hole forming member 46 is at a position where the protruding pin 42 of the manual handle 37 is inserted when the shielding member 30 is in the open posture. The hole 51 of the other hole forming member 47 is at a position where the protruding pin 42 of the manual handle 37 is inserted when the shielding member 30 assumes the shielding posture.

In the present embodiment, a detection sensor 55 is provided inside the outer box 27 as shown in FIG. The detection sensor 55 is, for example, a photoelectric sensor or a proximity sensor. Further, in the present embodiment, there is a dog member 56 at an intermediate portion of the swing shaft 36 as shown in FIG. The dog member 56 rotates together with the swing shaft 36. When the shielding member 30 is in the open position, the dog member 56 reaches the vicinity of the detection sensor 55.
That is, the detection sensor 55 detects that the shielding member 30 has moved away from the air introduction port 16 and the air introduction port 16 has been fully opened.
In the present embodiment, there is an electrical lock circuit, and the air conditioner 10 including the blower 11 can be driven on condition that the detection sensor 55 detects that the shielding member 30 is in the open posture.

The air introduction port 16 has been described above, but the lower air discharge port 18 has the same configuration.
In other words, a rectangular frame surrounding the opening is fitted in the blower outlet port 18, and packing is provided on the surface side of the frame.

The shielding member 31 is a plate having an area that completely covers the opening of the blower discharge port 18, and one side of the shield member 31 is pivoted to the upper side of the blower discharge port 18 to seal the blower discharge port 18. Oscillate in the direction to open and the direction to open.
Further, the swing shaft 60 of the shielding member 31 is extended, passes through the heat insulating wall 2, and protrudes to the outside of the outer box 27.
As shown in FIG. 1, the swing shaft 60 passes through the heat insulating wall 2 and protrudes outside the heat insulating tank 3. Further, a manual handle 61 is provided at the end of the swing shaft 60.
Therefore, when the manual handle 61 outside the heat insulating tank 3 is rotated, the shielding member 31 swings in the test chamber 5, the shielding posture for sealing the air blowing outlet 18, and the opening for opening the air blowing outlet 18. Can take posture.

In the present embodiment, the arm portion also has a protruding pin or the like on the lower air discharge port 18 side, and the outer box 27 is provided with hole forming members 62 and 63 as shown in FIG. .
In the present embodiment, one hole forming member 62 is at a position where the protruding pin of the manual handle 61 is inserted when the shielding member 31 is in the open posture. The hole of the other hole forming member 63 is at a position where the protruding pin of the manual handle 61 is inserted when the shielding member 31 assumes the shielding posture.
A detection sensor 55 is also provided on the lower air discharge port 18 side, and detects that the shielding member 31 is in the open posture.
In the present embodiment, there is an electrical lock circuit, and the air conditioner 10 including the blower 11 can be driven on condition that the detection sensor detects that the shielding member 31 is in the open posture.

Next, the test auxiliary device 100 will be described.
The test auxiliary device 100 has a contact plate 70 on the front surface, and the contact plate 70 is provided with an opening 21. The test auxiliary device 100 supports a motor 71 as a test object. The motor 71 protrudes from the opening 21 of the contact plate 70.
Here, the motor 71 as a device under test is a motor that generates, for example, driving power of an automobile.
Inside the test auxiliary device 100, a power supply device for supplying power to the motor 71 and various sensors are incorporated.

Next, the positional relationship between the environmental test apparatus 1 and the test auxiliary apparatus 100 will be described.
The environmental test apparatus 1 has wheels 72 attached to the lower part and is placed on a rail 73 laid on the floor surface.
Accordingly, the test chamber 5 of the environmental test apparatus 1 moves linearly along the rail 73 while being held at a constant height.
On the other hand, the test auxiliary device 100 is fixed to the floor and is held at a certain height. Here, the outer front surface of the heat insulating tank 3 in the test chamber 5 is at the same height as the contact plate 70 of the test auxiliary device 100, and the contact plate 70 is parallel to the end surface of the opening 20 of the test chamber 5. It is. The height of the motor 71 attached to the test auxiliary device 100 matches the height of the opening 21 formed in the contact plate 70.

Next, the function of the environmental test apparatus 1 of the present embodiment will be described along the procedure of the environmental test.
As a preparatory stage for the environmental test, as shown in FIG. 6, the environmental test apparatus 1 is joined to the test auxiliary apparatus 100, and a motor 71 as a test object is disposed in the test chamber 5.
Specifically, the environmental test apparatus 1 is moved linearly along the rail 73 manually or by power, and relatively close to the test auxiliary apparatus 100, and the end face of the opening 20 of the heat insulating tank 3 of the test chamber 5 is auxiliary to the test. Surface contact is made with the contact plate 70 of the apparatus 100. Then, the test chamber 5 is fixed to the test auxiliary device 100 by a lock mechanism (not shown).
As a result, the opening 20 of the test chamber 5 is sealed by the contact plate 70 of the test auxiliary device 100, and the inside of the test chamber 5 becomes a substantially sealed space.
In addition, the motor 71 as a test object enters the test chamber 5.

In this state, the manual handles 37 and 61 are rotated from the outside of the test chamber 5 and the shielding members 30 and 31 are rotated in the test chamber 5 so that the shielding members 30 and 31 in the test chamber 5 as shown in FIG. Is opened, and both the air inlet 16 and the air outlet 18 are opened to allow the air-conditioned space 15 and the test chamber 5 to communicate in an annular shape.
Further, the detection sensor 55 detects that the air introduction port 16 and the air discharge port 18 are in an open state, the electrical lock of the air conditioner 10 including the blower 11 is released, and the air conditioner 10 can be driven. Become.
And after this state is prepared, the air conditioner 10 is driven.

  As a result, the blower 11 is activated and the air in the test chamber 5 is introduced into the conditioned space 15 from the blower outlet 18. Then, as shown in FIG. 6, the air-conditioned space 15 is in a ventilated state, air contacts the air-conditioning device 10 to perform heat exchange and humidity adjustment, and the adjusted air is blown out into the test chamber 5 from the air introduction port 16. The detection signals of the temperature sensor 12 and the humidity sensor 13 are fed back, and the inside of the test chamber 5 becomes a desired environment.

A motor 71 as a device under test is in the test chamber 5 and is exposed to the environment of the test chamber 5. And get accustomed to the environment for a predetermined time.
In many cases, some information is obtained from various sensors (not shown) attached to the motor 71 during this period.
Then, when a certain time has elapsed and the temperature of the motor 71 becomes substantially equal to the temperature in the test chamber 5, the drive test preparation is started.

Specifically, as shown in FIG. 7, the air conditioner 10 is stopped. Then, the manual handles 37 and 61 are rotated from the outside of the test chamber 5, and the shielding members 30 and 31 are rotated in the test chamber 5 to obtain a shielding posture as shown in FIG. Are closed together to shield between the air-conditioned space 15 and the test chamber 5.
Then, after this state is prepared, the motor 71 is driven as shown in FIG.

When the motor 71 is driven, as shown in FIG. 8, lubricating oil and cooling water may scatter from the motor. However, since the openings 32 and 43 of the air introduction port 16 and the air discharge port 18 are both closed by the shielding members 30 and 31 and the blower 11 is stopped, the scattered liquid is stored in the test chamber 5. It is prevented from entering the air-conditioned space (air-conditioning unit) 15. For this reason, scattered objects are prevented from adhering to the cooler 6 and the heating device 17, and the air-conditioned space (air-conditioning unit) 15 is maintained in a clean state. Therefore, it is suppressed that a scattered matter burns or generates a strange odor.
Further, since the scattered matter stops in the test chamber 5, the cleaning work is easy.

  In addition, when repeating the above-mentioned test, since the scattered matter may be diffused in the test chamber 5 in the form of a mist, the shielding members 30 and 31 are kept closed for a certain time, and then the air conditioner 10 It is desirable to restart.

In the embodiment described above, the test chamber 5 and the air-conditioned space (air-conditioning unit) 15 are provided in the common heat insulation tank 3, but both are separated like the environmental test apparatus 80 shown in FIG. It may be a device.
In the environmental test apparatus 80 shown in FIG. 9, the heat insulation tank 81 which comprises the test chamber 5, and the heat insulation housing | casing 82 which comprises the air-conditioning space (air-conditioning part) 15 are physically separate apparatuses.
A large opening 20 is provided on the front side of the heat insulating tank 81 constituting the test chamber 5. In addition, an opening functioning as the air inlet 16 and an opening functioning as the air outlet 18 are provided in the back wall of the heat insulating tank 81.
Further, shielding members 30 and 31 are provided on the test chamber 5 side of the air blowing inlet 16 and the air outlet 18.

An air conditioner 10 is built in a heat insulating casing 82 that constitutes the air conditioned space 15.
The air-conditioned space 15 and the test chamber 5 are connected in an annular shape by a duct 83, and air circulates between them.

In the embodiment described above, the shielding member 30 is provided in the air blowing inlet 16 and the shielding member 31 is provided in the air blowing outlet 18, and both are opened and closed independently.
On the other hand, the two shielding members 30 and 31 may be interlocked.
In the above-described embodiment, the shielding members 30 and 31 are plate-shaped and swing, but the present invention is not limited to this configuration. Moreover, although the shielding members 30 and 31 existed in the vicinity of the ventilation inlet 16 and the ventilation outlet 18, and closed the opening directly, this invention is not limited to this structure. .

For example, like the environmental test apparatus 85 shown in FIG. 10, the moving partition plate 86 that moves linearly is used as a shielding member, and the moving partition plate (shielding means) 86 is inserted into the test chamber 5 to move back and forth in the test chamber 5. The air supply inlet 16 and the air outlet 18 may be substantially blocked.
Further, like the environmental test apparatus 87 shown in FIG. 11, a sheet (shielding means) 88 wound in a roll shape is provided, and the sheet 88 is fed out from the roll as shown in FIG. The opening 16 and the air outlet 18 may be shielded.
Furthermore, as in the environmental test apparatus 90 shown in FIG. 12, a horizontal curtain-like shielding means 91 may be adopted.

In each of the above-described embodiments, the shielding members (shielding means) 30 and 31 are operated by human power. However, power using a motor or the like may be used.
In each of the above-described embodiments, the detection sensor 55 detects that the shielding members 30 and 31 are in the open state, but may conversely detect that the shielding member 30 and 31 are in the shielding state. .
For example, if the shielding members 30 and 31 are in a shielding state, it is also recommended that the circuit does not drive the blower 11.

In the first embodiment described above, the frame 33 is fitted into the air inlet 16 and the like, and the packing 35 is further provided on the frame 33. According to this configuration, it is possible to prevent the scattered matter from entering the air-conditioned space 15 almost perfectly.
However, the present invention is not limited to this configuration, and the presence or absence of the packing 35 is arbitrary.
For example, if a circuit that stops the blower 11 is employed when the shielding members 30 and 31 are in a shielding state, it can be said that scattered objects rarely enter the conditioned space 15 without the packing 35. Rather, if there is packing 35, cleaning may be difficult.

It is also recommended to add a function for automatically operating the shielding members 30 and 31 depending on the condition of the DUT. For example, when the motor 71 which is a device under test is placed in the test chamber 5 and familiarized with the environment of the test chamber 5, the shielding members 30 and 31 are automatically set when there is some trouble in the device under test. Shielded. For example, when the sensor detects that the lubricating oil system or the cooling system of the motor has been destroyed, the shielding members 30 and 31 are put in a shielding state.
Alternatively, when the test object is operated with the shielding members 30 and 31 open, and the sensor detects that an abnormality has occurred in the test object, the shielding members 30 and 31 are immediately put into the shielding state, and the scattered objects are in the conditioned space. (Air conditioning unit) 15 is prevented from entering.

DESCRIPTION OF SYMBOLS 1 Environmental test apparatus 3 Thermal insulation tank 5 Test room 10 Air conditioning equipment 11 Blower 21 Opening 15 Air-conditioned space (air-conditioning part)
16 Air inlet 18 Air outlet 30 and 31 Shielding member (shielding means)
32 Opening 33 Frame 36, 60 Oscillating shaft 37, 61 Manual handle 55 Detection sensor (opening / closing detection means)
70 Contact plate 71 Motor (DUT)
80, 85, 87, 90 Environmental test device 81 Heat insulation tank 82 Heat insulation housing 86, 88, 91 Shielding means 100 Test auxiliary device

Claims (7)

It has a test room where the DUT is placed and an air conditioning unit with built-in air conditioning equipment.
The test chamber has an air inlet and an air outlet. Air in the test chamber is exhausted from the air outlet and introduced into the air conditioning unit, and air whose temperature and / or humidity is adjusted by the air conditioning unit is blown. In an environmental test apparatus in which the temperature and / or humidity in the test chamber is adjusted by returning the sample from the inlet to the test chamber.
An environmental test apparatus characterized in that a shielding means for shielding the air inlet and the air outlet is provided. The test chamber has an open part on at least one surface, and other test auxiliary devices can be connected to the open part,
The test chamber can be moved relative to the test auxiliary device,
An object to be tested is attached to the test auxiliary device, and the open portion is sealed by connecting the test auxiliary device to the open portion of the test chamber by relatively moving at least one of the test chamber and the test auxiliary device in the proximity direction. The environmental test apparatus according to claim 1, wherein the test chamber is in a substantially hermetically sealed state, and the DUT is placed in the test chamber.   It is possible to operate from the outside of the test chamber to operate the shielding means, and to switch between an open state in which the air inlet and the air outlet are opened and a shield state in which the air inlet and the air outlet are shielded. The environmental test apparatus according to claim 1 or 2.   An opening / closing detection means for detecting that the shielding means shields the ventilation inlet and the ventilation outlet, or that the shielding means does not shield the ventilation inlet and the ventilation outlet; The environmental test apparatus according to any one of claims 1 to 3, wherein any or all of the air conditioners cannot be driven or any or all of the air conditioners can be driven depending on a detection state.   5. The environmental test apparatus according to claim 1, further comprising an insulating tank, wherein the inside of the insulating tank is partitioned to form the test chamber and the air conditioning unit.   The environmental testing apparatus according to claim 1, wherein the test chamber and the air conditioning unit are separate apparatuses, and the two are connected by an air passage. An environmental test method carried out using the environmental test apparatus according to any one of claims 1 to 6, wherein the motor is a test object,
Place the DUT in the test chamber, operate the air conditioner with the air inlet and the air outlet open, and make the environment in the test chamber the desired environment,
Familiarize the DUT with the laboratory environment,
Thereafter, the air introduction port and the air discharge port are shielded by the shielding means, and the motor which is the object to be tested is driven.

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