JP5509169B2 - Environmental test equipment - Google Patents

Description

  The present invention relates to an environmental test apparatus capable of exposing a device under test to a predetermined environment.

Environmental testing is known as a measure for examining the performance and durability of products and parts. Environmental tests are performed using equipment called environmental test equipment. The environmental test apparatus artificially creates, for example, a high temperature environment, a low temperature environment, a high humidity environment, and the like.
The environmental test apparatus includes an environmental adjustment system as shown in FIG. An environmental test apparatus 100 shown in FIG. 18 includes a test chamber 3, a cooler 5, a heater 6, a humidifier 7, and a blower 8. The test chamber 3 is a space covered with the heat insulating material 2. There is an air flow path 10 communicating with the test chamber 3, and the air flow path 10 is provided with the evaporator 11 of the cooler 5, the heater 6, the humidifier 7, and the blower 8. Further, a temperature sensor 12 and a humidity sensor 13 are provided on the outlet side of the air flow path 10. In the environmental test apparatus 100, the air conditioning apparatus 15 is configured by the members in the air flow path 10 described above, the temperature sensor 12, and the humidity sensor 13.

  The environmental test apparatus 100 creates a desired temperature / humidity environment in the test chamber 3 by the air conditioner 15.

In the environmental test, the DUT 16 is placed in the test chamber 3 described above, and the DUT 16 is exposed to a harsh environment and its change is observed.
In the environmental test, a sensor 17 may be attached to the DUT 16 in order to observe the progress of the change of the DUT 16 during the test. For example, a strain gauge for observing a change in external shape may be attached, or an electrode for measuring a resistance change may be attached. Alternatively, a temperature sensor may be attached to measure the surface temperature of the DUT 16. Furthermore, an electric wire for energizing the DUT 16 may be attached.

On the other hand, since the environment in the test room 3 is harsh and narrow, measuring instruments such as testers, recorders, and personal computers must be placed outside the test room 3. Therefore, it is necessary to connect the inside and outside of the test chamber 3 with the signal line 18 and the power line.
Therefore, in the environmental test apparatus 100, the test chamber 3 is provided with a hole 101 that communicates inside and outside, and the signal line 18 is inserted through the hole 101.

  In the environmental testing apparatus 100 of the prior art, as shown in FIGS. 15 and 16, the hole 101 is provided only on one side surface 102 of the environmental testing apparatus 100. In other words, a door member 20 is provided on the front of the environmental test apparatus 100 in order to load and remove the DUT 16 from the test chamber 3, but the left side 102 faces the test chamber 3 toward the door member 20. There is a hole 101 for communicating with each other. The position of the hole 101 is limited to one of the left and right side surfaces toward the test chamber 3, and there is no environmental test apparatus in which the hole 101 is provided on both the left and right side surfaces.

JP 2007-271551 A

Hereinafter, the reason why the communication hole 101 is provided only on one side surface of the environmental test apparatus 100 will be described.
The actual appearance of the environmental test apparatus 100 is as shown in FIGS. 15 and 16 and has a rectangular parallelepiped shape as a whole.
Looking at the housing structure of the environmental test apparatus 100, it is roughly divided into five areas as will be described later. That is, there are partitions and walls (not shown) inside the environmental test apparatus 100. As shown in FIGS. 3 to 7, the test room arrangement unit 22, the pedestal unit 23, the operation equipment installation unit 25, the electrical component arrangement unit 26, and the piping It is divided into the arrangement part 27.
Here, the test chamber arrangement section 22 has an independent outer casing 103 as shown in FIG. 17, and an inner casing 105 constituting the test chamber 3 is arranged therein.
A heat insulating material (heat insulating layer) 2 is built in between the outer housing 103 and the inner housing 105.

The electrical component placement unit 26 is an area adjacent to the side surface of the test chamber placement unit 22, and is provided on the right side surface toward the test chamber placement unit 22 in each drawing.
There is a space in the electrical component placement unit 26, and a power supply circuit, a control circuit, a relay, and the like are placed in this space. That is, a power supply circuit such as a transformer, a diode, and a capacitor, a substrate, a substrate on which a CPU, a transistor, an IC, and the like are mounted, and other electrical components are installed in the electrical component placement unit 26.

  As described above, the environmental test apparatus 100 needs to insert the signal line 18 and the power line inside and outside the test chamber 3. When the periphery of the test chamber 3 is viewed here, the side surface 102 on the left side toward the test chamber 3 has only the heat insulating layer 2 formed of the heat insulating material 2 and the side wall portion of the outer housing 103, Even if an opening is provided, there are few harmful effects.

On the other hand, on the right side surface 104 toward the test chamber 3, there is an electrical component placement unit 26, and electrical components such as a power supply circuit, a control circuit, and a relay are placed.
For this reason, if a hole is provided on the electrical component placement portion 26 side of the test chamber 3, cold air, hot air, wet air, etc. in the test chamber 3 leaks and enters the electrical component placement portion 26. As a result, the electrical component breaks down or malfunctions.
In particular, the environmental test apparatus 100 has many functions for creating a low-temperature environment. However, when low-temperature air leaks into the electrical component placement unit 26, it collides with the outside air in the electrical component placement unit 26, and the interior of the electrical component placement unit 26. Will cause condensation. As a result, electrical components get wet and fatal failures occur.
Therefore, in the prior art, a hole 101 communicating with the test chamber 3 is provided only on one side of the environmental test apparatus 100, and no hole is provided on the other side.

However, the conventional environmental testing apparatus 100 is not convenient because the hole 101 for drawing out the signal line 18 and the like is provided only on one side of the environmental testing apparatus 100.
For example:
Since the signal line 18 drawn from the test chamber 3 takes data from the device under test 16, it is often connected to a personal computer. Moreover, the personal computer currently marketed is multifunctional, and can input and process data obtained from a plurality of environmental test apparatuses 100. On the other hand, in order to install a personal computer, a predetermined installation location is required. However, there are restrictions on the floor area of the building, and there are many cases where it is not possible to secure a location for installing a large number of personal computers.
Therefore, there is a strong demand for users to install and use the environmental test apparatuses 100a and 100b and the personal computer 106 with the layout as shown in FIG.
That is, the two environmental test apparatuses 100a and 100b are set apart from each other, and the personal computer 106 is placed between them.

  However, since the holes for drawing out the signal lines 18 and the like are provided only on one side of the conventional environmental testing apparatuses 100a and 100b, the distance between the hole of the environmental testing apparatus 100a on the left side of the drawing and the personal computer 106. However, the signal line 18 must be routed long. Therefore, the wiring is troublesome. If the signal line 18 is long, noise may be picked up on the way. Furthermore, some sensors, such as thermistors, have a limited length of the signal line 18, and it may be assumed that the signal line 18 cannot be substantially connected to the personal computer 106.

  Therefore, the present invention pays attention to the above-described problems of the prior art, and an object of the present invention is to provide an environmental test apparatus that can draw out signal lines and the like from the left and right side surfaces.

  Invention of Claim 1 for solving an above-mentioned subject has a test chamber arrangement | positioning part in which the test chamber was provided in the inside and the door member which opens and closes a test chamber in the front side was provided, and toward the door member. There is an electrical component arrangement part on the left side or right side of the test room arrangement part, and the test room arrangement part is an inner case constituting part or all of the inner wall of the test room, and part or all of the inner case. A heat-insulating layer covering the test chamber from the outside of the heat-insulating layer, and the electrical component placement unit has an electrical component built-in housing having a space part in which the electrical components are arranged, In an environmental test apparatus having an electrical equipment side wall portion that closes the space portion of the electrical equipment built-in housing and constitutes a side surface of the entire apparatus, the inner housing, the heat insulating layer, the space portion of the electrical equipment placement portion, and the electrical equipment side wall And a communication tube portion that communicates between the test chamber and the outside of the environmental test apparatus. Preparative an environmental test apparatus according to claim.

  The invention according to claim 2 for solving the same problem is an environmental test apparatus having a test chamber inside and a door member for opening and closing the test chamber on the front side. The outer shell member is divided into at least a test chamber arrangement portion and an electrical component arrangement portion arranged on the side of the test chamber arrangement portion, and the test chamber arrangement portion includes a test chamber. An inner casing that constitutes part or all of the inner wall, and a heat insulating layer that covers part or all of the inner casing, and the electrical component placement portion includes a space portion in which electrical components are disposed. Yes, in an environmental test apparatus having an electrical equipment side wall portion that is a part of the outer member and closes the space portion of the electrical component placement section and constitutes a side surface of the entire environmental test apparatus. The test passes through the space part of the electrical component placement part and the side wall part on the electrical equipment side, and An environmental test apparatus characterized by having a cylindrical communicating portion communicating with the outside of the environmental tester with.

The inventions described in claims 1 and 2 both have an electrical component arrangement section on the side surface side of the test chamber, and this point is common to the environmental test apparatus 100 of the prior art. Also, the electrical component placement portion has a space portion, and the electrical component is built in this space portion, and is not different from the environmental test apparatus 100 of the prior art. That is, the layout of the environmental test apparatus according to claims 1 and 2 is substantially the same as that of the conventional environmental test apparatus 100.
The environmental test apparatus according to any one of claims 1 and 2 may be configured such that both the inner casing, the heat insulating layer, the space part of the electrical component placement unit, and the electrical equipment side wall part pass through the test chamber and the outside of the environmental test apparatus. It has a “communicating tube portion”.
Therefore, according to the environmental test apparatus described in claims 1 and 2, the signal line and the like can be drawn from the side surface on the side where the electrical component arranging portion is provided by inserting the signal line and the like into the communicating tube portion. Therefore, even if there is a measuring device or the like on the electrical component placement portion side of the environmental test apparatus, the sensor or the like in the test chamber can be easily connected to the measuring device or the like.
Further, since the inside of the electrical component placement part and the part through which the signal line and the like are inserted are shielded by the communication tube part, cold air and hot air in the test chamber do not leak into the electrical component placement part. That is, in the present invention, the inside of the test chamber and the outside of the environmental test apparatus communicate directly with each other via the communication tube portion, and the test chamber and the electrical component placement portion do not communicate with each other. Therefore, the electrical component placement section is not exposed to a high temperature environment, a low temperature environment, or a high humidity environment, and the electrical component is not damaged.

  The invention described in claim 3 is an environmental test apparatus according to claim 1 or 2, wherein a saucer member is provided under the communicating cylinder part, and a drain pipe is provided on the saucer member. is there.

Since the communication tube portion communicates with the test chamber, the temperature in the communication tube may decrease when the test chamber is in a low temperature environment. Therefore, there is a concern that the temperature of the outer peripheral surface of the communication tube portion decreases, and condensation occurs on the outer peripheral surface of the communication tube portion.
In view of this, the invention according to claim 3 is provided with a tray member under the communicating tube portion in preparation for the occurrence of condensation, thereby preventing the condensation from falling into the electrical component placement portion.
That is, in the environmental test apparatus according to the third aspect, since the dew generated in the communicating tube portion can be received by the tray member, the equipment in the electrical component placement portion is not wetted.
In addition, since the drain pipe is provided in the tray member, the drain received by the tray member can be drained to an appropriate place.

  According to a fourth aspect of the present invention, there is an electrical equipment side back wall portion on the inner surface side of the electrical equipment arrangement portion and facing the inner surface of the electrical equipment side wall portion across the space portion, and supports the communicating cylinder portion. The environmental test apparatus according to any one of claims 1 to 3, wherein a support member projects in a cantilevered manner from the electrical equipment-side back wall.

The electrical equipment-side back wall portion may be a wall surface that covers the test chamber via a heat insulating material, or may be a member different from the member that covers the test chamber.
In the environmental test apparatus according to the present invention, the communication tube portion is supported by the support member. For this reason, the communication tube portion does not wobble and is stabilized.
Moreover, since the support member is cantilevered from the electrical equipment side back wall part side, the electrical equipment side wall part which is an outer wall of the environmental test apparatus and the support member can be separated. Further, for the same reason, the communicating cylinder part and the electrical equipment side wall part can be separated from each other, and therefore, the electrical equipment side wall part can be easily removed at the time of inspection or the like.

  The invention according to claim 5 is characterized in that the support member has a frame shape or a box shape having members in at least two directions among the four directions of the top side, the ground side, and both side surfaces of the communication tube portion. Item 5. The environmental test apparatus according to Item 4.

  Since the support member employed in the present invention is frame-shaped or box-shaped, it has high rigidity.

  According to a sixth aspect of the present invention, the electrical equipment side wall has an opening larger than the end of the communicating cylinder part, and the support member has a sealing wall in the vicinity of the electrical equipment side wall part of the communicating cylinder part. The environmental test apparatus according to claim 4, wherein the wall seals the opening from the space side.

In the environmental test apparatus of the present invention, since there is an opening in the electrical equipment side wall, the end of the communication cylinder portion is looked into the opening of the electrical equipment side wall, or the end of the communication cylinder portion is projected from the opening of the electrical equipment side wall. be able to.
Moreover, since the opening described above is larger than the end portion of the communication cylinder portion, when removing the electrical equipment side wall for inspection and reattaching the electrical equipment side wall, the end portion of the communication cylinder portion is adjusted to the position of the opening. It is easy to project the end portion of the communication tube portion from the opening of the electrical equipment side wall.
Further, the supporting member has a blocking wall in the vicinity of the electrical equipment side wall portion of the communicating cylinder portion, and the sealing wall blocks the opening from the space side, so that the inside of the electrical component placement portion cannot be seen from the outside.

  The environmental test apparatus of the present invention is easy to use because the signal line and the like can be drawn out from the test room from both the left and right sides of the apparatus.

It is the perspective view which observed the environmental test apparatus of embodiment of this invention from the right diagonal direction. It is the perspective view which observed the environmental test apparatus shown in FIG. 1 from the right diagonal direction by opening a front door member. It is a perspective view which shows the area | region of the test chamber arrangement | positioning part of the environmental test apparatus of FIG. It is a perspective view which shows the area | region of the base part of the environmental test apparatus of FIG. It is a perspective view which shows the area | region of the operation equipment installation part of the environmental test apparatus of FIG. It is a perspective view which shows the area | region of the electrical equipment arrangement | positioning part of the environmental test apparatus of FIG. It is a perspective view which shows the area | region of the piping arrangement | positioning part of the environmental test apparatus of FIG. It is a perspective view which shows the arrangement | positioning relationship of the housing | casing which comprises the environmental test apparatus of FIG. It is the perspective view which fractured | ruptured and displayed part of the outer side housing | casing of the environmental test apparatus of FIG. It is the perspective view which removed the electrical equipment side wall part of the environmental test apparatus of embodiment of this invention, and observed the inside of the space part of an electrical equipment arrangement | positioning part. It is a partially broken perspective view of the electrical equipment arrangement part of the environmental test apparatus of the embodiment of the present invention. It is an electrical equipment arrangement | positioning part of the environmental test apparatus of embodiment of this invention, Comprising: It is a perspective view of a communication cylinder part vicinity. It is a disassembled perspective view of the communication cylinder part vicinity of the environmental test apparatus of embodiment of this invention. It is sectional drawing of the communication cylinder part vicinity of the environmental test apparatus of embodiment of this invention. It is the perspective view which observed the environmental testing apparatus of the prior art from the right diagonal direction. It is the perspective view which observed the environmental testing apparatus of the prior art from the left diagonal direction. It is a perspective view of the outer housing | casing of the environmental test apparatus of a prior art. It is a block diagram of the environmental test apparatus of this invention and a prior art. It is a front view which shows the layout in the case of installing two environmental test apparatuses.

Embodiments of the present invention will be further described below. In addition, the overlapping description is abbreviate | omitted about the member same as the environmental testing apparatus 100 of a prior art.
The air conditioner 15 of the environmental test apparatus 1 according to the embodiment of the present invention is the same as the environmental test apparatus 100 of the prior art.
That is, the environmental test apparatus 1 includes a test chamber 3, a cooler 5, a heater 6, a humidifier 7, and a blower 8 as shown in FIG. The test chamber 3 is a space covered with a heat insulating material (heat insulating layer) 2. There is an air flow path 10 communicating with the test chamber 3, and the air flow path 10 is provided with the evaporator 11 of the cooler 5, the heater 6, the humidifier 7, and the blower 8.
Further, a temperature sensor 12 and a humidity sensor 13 are provided on the outlet side of the air flow path 10. In the environmental test apparatus 1, an air conditioner 15 is configured by the above-described members in the air flow path 10, the temperature sensor 12, and the humidity sensor 13.

  The appearance of the environmental test apparatus 1 is as shown in FIGS. 1 and 2 and has a rectangular parallelepiped shape as a whole. That is, the environmental test apparatus 1 has an outer member 30 made of stainless steel or the like. The inside of the outer member 30 has a partition wall (not shown) and is roughly divided into five regions. That is, the interior of the environmental test apparatus 1 is substantially divided into five sections. As shown in FIGS. 3 to 7, the test room arrangement section 22, the pedestal section 23, the operation equipment installation section 25, and the electrical equipment arrangement section 26 And the piping arrangement portion 27.

  The layout of each section is as shown in FIG. 3 to FIG. The test room arrangement part 22 and the pedestal part 23 are considered as one lump, and there are an operation equipment installation part 25 and an electrical equipment arrangement part 26 on the right side. The operation device installation unit 25 and the electrical component placement unit 26 are located in the front and rear (front and back) positions, the operation device installation unit 25 is located on the front side (front side), and the electrical component placement unit 26 is located on the back side. Yes. The piping arrangement part 27 is on the entire back surface side.

The function of each section will be briefly described as follows.
The test chamber arrangement part 22 incorporates the test chamber 3 and is provided with a door member 20 on the front side thereof. That is, the door member 20 is provided in front of the test chamber arrangement portion 22. In addition, there is a heat insulating layer composed of the heat insulating material 2 around the test chamber 3. The specific structure of the test chamber arrangement unit 22 will be described later.

  The pedestal portion 23 has a function of holding the test chamber 3 at a predetermined height. Moreover, in this embodiment, the compressor (not shown) etc. of the above-mentioned cooler 5 and the water supply tank (not shown) for supplying water to the humidity sensor 13 are incorporated.

  The operating device installation unit 25 is a part to which the operation panel 33 and the display screen 35 are attached, and these operation unit and display unit are exposed to the front side.

  The electrical component placement unit 26 has a space 32 therein, and electrical components such as a power supply circuit, a control circuit, and a relay are placed in the space 32. The specific structure of the electrical component placement unit 26 will also be described later.

  A water supply pipe, a refrigeration pipe, and the like are arranged in the pipe arrangement portion 27 (not shown).

It can be said that the outer member 30 of the environmental test apparatus 1 is formed by joining approximately four casings as shown in FIG.
That is, the outer member 30 of the environmental test apparatus 1 includes a test chamber built-in housing (outer housing) 40, a lower housing 41, an electrical component built-in housing 43, and a back housing 44.

The test chamber built-in housing (outer housing) 40 constitutes all the portions of the test chamber arrangement portion 22.
Inside the test chamber built-in housing (outer housing) 40, an inner housing 45 constituting the test chamber 3 is built in as shown in FIG.
Further, between the test chamber built-in housing (outer housing) 40 and the inner housing 45, there is the above-described heat insulating layer (heat insulating material 2). Therefore, the test chamber arrangement portion 22 has an inner housing 45 that constitutes the inner wall of the test chamber 3, and a heat insulating layer (heat insulating material 2) that covers the surface of the inner housing 45 excluding the door member 20 side, There is a test chamber built-in housing (outer housing) 40 that covers the test chamber 3 from the outside.

The inner casing 45 has an opening on the surface on the door member 20 side, and inner walls on the other five surfaces. That is, as shown in FIG. 9, the inner housing 45 includes a top wall 49, a bottom wall 50, a back wall 51, a left side wall 52, and a right side wall 53.
Openings 55 and 56 are provided in the left side wall 52 and the right side wall 53.
The opening 55 provided in the left side wall 52 communicates with the left side surface of the test chamber built-in housing (outer housing) 40 as in the conventional technique. In the figure, a state in which a lid 59 is attached to the opening 55 is shown.

On the other hand, the end of the communication tube 60 is attached to the opening 56 provided in the right side wall 53.
Here, the communication cylinder 60 is made of a resin having heat resistance and low temperature resistance such as neoprene rubber and epoxy resin, and having a low water absorption, and is a cylinder having a circular cross-sectional shape.
The length of the communication cylinder 60 has a length from the test chamber 3 to the side surface of the environmental test apparatus 1 via the electrical component placement unit 26. The length of the communication tube 60 is approximately 30 cm to 70 cm. The inner diameter of the communication tube 60 is about 20 mm to 150 mm, and is usually about 40 mm to 100 mm.

One end of the communication tube 60 is fixed to the opening end of the opening 56 provided in the right side wall 53 of the test chamber 3 with a fastener 74 (FIG. 14). The communication tube 60 passes through the right side wall 53 of the inner housing 45 and the heat insulating layer (the heat insulating material 2) surrounding the outer peripheral side of the inner housing 45 as shown in FIGS. It penetrates through the side wall 62 of the body (outer housing) 40, protrudes toward the adjacent electrical equipment housing 43, and enters the electrical equipment housing 43 side.
In this embodiment, the side wall 62 of the test chamber built-in housing (outer housing) 40 faces the inner surface of the electrical component side wall portion 61 on the inner surface side of the electrical component placement portion 26 with the space portion 32 therebetween. It is located and functions as the electrical equipment side wall.

  The electrical component built-in housing 43 constitutes all of the operating device installation unit 25, all of the electrical component arrangement unit 26, and part of the pipe arrangement unit 27. The electrical component built-in housing 43 constitutes a part of the outer shell of the environmental test apparatus 1 (a part of the outer shell member 30). In particular, the side plate of the electrical component built-in housing 43 is the electrical equipment side wall 61 that constitutes the right side wall of the environmental test apparatus 1 (the right side wall of the outer member 30). In this embodiment, as shown in FIGS. 10 and 12, a square opening 65 is provided in the electrical equipment side wall 61. The electrical equipment side wall 61 can be removed for inspection.

The electrical component placement unit 26 includes the outer surface of the right side wall (electrical component side inner wall) 62 of the test chamber built-in casing (outer casing) 40, the electrical component side wall 61, and the operation device mounting unit 25. This is a rectangular parallelepiped region surrounded by the inner wall and the inner wall of the piping arrangement portion 27, and has a space portion 32 inside.
In the space 32, electrical components 38 and 39 such as a substrate and a transformer are built. In the present embodiment, the electrical components 38 and 39 are arranged at positions close to the piping arrangement portion 27 side and the lower side, and are closer to the operation device installation unit 25 and are located on the upper side. There is no. That is, the electrical components 38 and 39 are gathered on the back side and the lower side of the electrical side wall portion 61, and there are no electrical components 38 and 39 on the upper portion on the front side.
In other words, there are no electrical components 38 and 39 around the communication tube 60.

  In addition, as a configuration unique to the present embodiment, a support member 70 is provided in the electrical component placement unit 26. The support member 70 supports the communication tube 60 described above, and is provided on the side wall side inside the electrical component arranging portion 26. That is, it protrudes from the wall surface facing the electrical equipment side wall 61. More specifically, in the present embodiment, the support member 70 protrudes in a cantilever manner from the outer surface of the right side wall 62 of the test chamber built-in housing (outer housing) 40.

As shown in FIGS. 12 and 13, the support member 70 is a combination of a tray member 71 and an upper cover member 72.
To explain sequentially, the tray member 71 has a plate-like appearance and has a shallow recess 73 on the top surface. And the hole 75 is provided in the bottom part of the hollow part 73, and the said hole 75 is connected to the lower surface side. Further, the lower surface side of the hole 75 is a protruding portion 76 (FIG. 14) protruding like a nozzle.

The upper covering member 72 is a member having a substantially “L” shape, and includes a top surface portion 77 and a closing wall forming portion (blocking wall) 78 bent vertically from the top surface portion 77.
The closing wall forming portion 78 has a larger area than the rectangular opening 65 provided in the electrical equipment side wall portion 61 described above.
The closing wall forming portion 78 is provided with a circular opening 80. The opening diameter of the opening 80 is substantially equal to the outer diameter of the communication tube 60.

The support member 70 is obtained by joining the end surface of the closing wall forming portion 78 of the upper cover member 72 to the upper surface near the end portion of the tray member 71 with a screw (not shown) or the like. It is a substantially “U” -shaped frame composed of a surface portion 77), a bottom surface (receiving tray member 71), and one vertical wall (closing wall forming portion 78) that connects the surface portion.
The support member 70 has a side wall on the right side of the test chamber built-in housing (outer housing) 40 in a state where the vicinity of the free end of the communication tube 60 is inserted into the opening 80 provided in the closing wall forming portion 78. 62 is attached with a screw 64 or the like. That is, the support member 70 projects in a cantilever manner from the side wall (electric component side rear wall portion) 62 of the test chamber built-in housing (outer housing) 40.

  Further, a drain discharge hose 81 is connected to the protrusion 76 (FIG. 14) to form a drain pipe.

A retaining ring member 85 is mounted near the free end of the communication tube 60. The retaining ring member 85 is a member for protecting the end portion of the communication tube 60 and fixing the free end side of the communication tube 60 to the support member 70.
The retaining ring member 85 includes a ring-shaped portion 86 and a flange portion 87. The ring-shaped portion 86 has a cylindrical shape, and the inner diameter thereof is substantially equal to the outer diameter of the communication cylinder 60. The flange portion 87 is provided with a screw insertion hole (not shown).

  The vicinity of the free end of the communication tube 60 is inserted into the ring-shaped portion 86 of the retaining ring member 85. The flange portion 87 is fixed to the outer surface side of the closing wall forming portion 78 with screws (not shown).

  As described above, one end of the communication tube 60 is fixed to the inner housing 45. The other end of the communication tube 60 is supported by a closing wall forming portion 78 of the support member 70 via a retaining ring member 85. Therefore, the communication tube 60 protrudes vertically from the inner housing 45 and is stable without wobbling.

A rectangular opening 65 provided in the electrical equipment side wall 61 is provided at a position on the other end side of the communication cylinder 60, and the other end side of the communication cylinder 60 protrudes from the opening 65 of the electrical equipment side wall 61. Further, in the support member 70, only the distal end portion of the tray member 71 protrudes outward from the opening 65, the closing wall forming portion 78 remains in the electrical component arrangement portion 26, and the opening 65 of the electrical component side wall portion 61 is located inside. Close from.
Therefore, in the state in which the support member 70 is mounted, the opening 65 of the electrical equipment side wall 61 is closed by the closing wall forming part (blocking wall) 78 and the inside of the electrical equipment side wall 61 cannot be seen from the outside. .

  As described above, one end of the communication tube 60 is fixed to the opening end of the opening 56 provided in the right side wall 53, and the right side wall 53 of the inner housing 45 and the inner case as shown in FIGS. Through the heat insulating layer (heat insulating material 2) surrounding the outer peripheral side of the body 45, and further through the side wall 62 of the test chamber built-in housing (outer housing) 40 to the adjacent electrical component built-in housing 43 side. It protrudes. Further, it passes through the space portion 32 of the electrical component arrangement portion 26 and the electrical equipment side wall portion 61. Therefore, the inside of the test chamber 3 and the outside of the environmental test apparatus 1 communicate directly with each other via the communication tube 60.

A lid 83 can be attached to the tip of the communication tube 60, and when the signal line or the like is not inserted through the communication tube 60, the communication tube 60 can be closed with the cover 83.
A lid (not shown) can also be attached to the test chamber 3 side of the communication tube 60.

In the environmental test apparatus 1 of the present embodiment, the signal line 18 and the like can be inserted into the communication tube 60 described above, and the signal line 18 and the like can be pulled out from both the left and right sides of the environmental test apparatus 1.
In use, it is desirable to pad the communication tube 60 so as not to disturb the environment in the test chamber 3. For example, the signal line 18 is inserted into the communication tube 60, and a heat-insulating material such as glass wool and easily deformable is packed to fill a gap between the inner wall of the communication tube 60 and the signal line 18.

  Further, when the test is performed in a low temperature environment in the test chamber 3, condensation may occur around the communication tube 60. The condensed water falls and accumulates in the tray member 71, and a drain discharge hose 81 is provided. It is discharged to the outside via. Therefore, the equipment in the electrical equipment side wall 61 is not wetted.

In the present embodiment, the communication tube 60 has a circular cross-sectional shape, but may have a polygonal shape.
In the present embodiment, the resin communication tube 60 is used, but it may be made of ceramic. When the communication cylinder 60 is, for example, metal and has sufficient rigidity, the support member 70 is not necessarily required.

Further, in order to prevent dew condensation from occurring around the communication tube 60, the periphery of the communication tube 60 may be surrounded by a heat insulating material.
In the present embodiment, the support member 70 is a frame having only three surfaces, but may be a housing having four or more surfaces.
In the present embodiment, the support member 70 is attached to the outer side surface of the right side wall 53 of the test chamber built-in housing (outer housing) 40. However, the electrical component built-in housing 43 is provided with a wall surface parallel to the test chamber 3. The support member 70 may be attached to this wall surface.

1 Environmental test equipment 2 Heat insulation material (heat insulation layer)
3 Test Chamber 20 Door Member 22 Test Chamber Arrangement Unit 26 Electrical Component Arrangement Unit 30 Outer Member 32 Space Unit 40 Test Chamber Built-in Case (Outside Case)
43 Electrical component built-in housing 45 Inner housing 60 Communicating tube 61 Electrical side wall 62 Side wall (electrical side rear wall)
65 opening 70 support member 71 saucer member 75 hole 78 closing wall forming part (blocking wall 81 hose (drain pipe)
85 Retaining ring member

Claims (6)

  There is a test chamber placement section with a test chamber inside and a door member that opens and closes the test chamber on the front side, and there is an electrical equipment placement section on the left or right side of the test chamber placement section toward the door member. The test chamber arrangement section includes an inner casing that constitutes part or all of the inner wall of the test chamber, a heat insulating layer that covers part or all of the inner casing, and an outer casing that covers the test chamber from the outside of the heat insulating layer. The electrical component placement unit has an electrical component built-in housing having a space portion in which the electrical components are arranged, and closes the space portion of the electrical component built-in housing and In an environmental test apparatus having an electrical equipment side wall portion that constitutes a side surface, the inner casing, the heat insulating layer, the space of the electrical equipment placement section, and the electrical equipment side wall section are penetrated, and the test chamber and the outside of the environmental test equipment are connected. An environmental test apparatus comprising a communicating tube portion that communicates.   An environmental test apparatus having a test chamber inside and a door member that opens and closes the test chamber on the front side, and has an outer member that forms an outer shell of the environmental test device, and at least the test chamber is arranged in the outer member And an electrical component placement section disposed on the side surface side of the test chamber placement section. The test chamber placement section includes an inner housing that forms part or all of the inner wall of the test chamber, and the inner housing. A heat insulating layer covering a part or all of the body is disposed, and the electrical component placement portion has a space portion in which the electrical component is disposed, and is a part of the outer member and the space of the electrical component placement portion In the environmental test apparatus having the electrical equipment side wall portion that closes the part and constitutes the side surface of the entire environmental test apparatus, the inner casing, the heat insulating layer, the space portion of the electrical equipment placement portion, and the electrical equipment side wall section penetrate, Having a communication tube that communicates the test chamber with the outside of the environmental test equipment Environmental testing apparatus characterized.   The environmental test apparatus according to claim 1 or 2, wherein a saucer member is provided under the communicating cylinder part, and a drain pipe is provided on the saucer member.   There is an electrical equipment side back wall portion on the inner surface side of the electrical equipment arrangement portion and facing the inner surface of the electrical equipment side wall portion across the space portion, and the support member that supports the communication tube portion is the electrical equipment side back wall The environmental test apparatus according to claim 1, wherein the environmental test apparatus projects in a cantilevered manner from the portion.   The environmental test apparatus according to claim 4, wherein the support member has a frame shape or a box shape having members in at least two directions among the four directions of the top side, the ground side, and both side surfaces of the communication tube portion.   The electrical equipment side wall has an opening larger than the end of the communicating cylinder part, the support member has a sealing wall in the vicinity of the electrical equipment side wall part of the communicating cylinder part, and the sealing wall opens the opening from the space side. The environmental test apparatus according to claim 4, wherein the environmental test apparatus is sealed.

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