JP2014224742A - High-temperature environment formation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high-temperature environment formation device capable of reducing effect on adhesion means provided between a device main body and a door body, the effect being caused by an environment formed in predetermined space, and capable of restraining the progress of deterioration of the adhesion means.SOLUTION: An environmental test device (a high-temperature environment formation device) comprises: a device main body 4 having a test chamber 5 and a device opening 11; and a door body 6 attached to the device main body 4 in an openable/closable manner. The door body 6 comprises a door main body 13, a sealing part 15, and a shielding member 17. The door main body 13 has a protruded portion 35 in such a shape as to fit in the device opening 11. The sealing part 15 has an inner seal 37 and an outer seal 38 to form a double-sealing structure. The shielding member 17 is disposed in a gap s formed between the door main body 13 and an edge portion of the device opening 11 when the door body 6 is in a closed attitude, and shields most of the gap s.

Description

  The present invention relates to a high temperature environment forming apparatus capable of adjusting a predetermined space to a target temperature and / or humidity, and in particular, an apparatus main body having a predetermined space, and the apparatus main body can be freely opened and closed. It relates to the structure between the attached door body.

  There is an environmental test device as a device for testing the performance, durability, etc. of products, materials, etc. (hereinafter simply referred to as sample bodies). An environmental test apparatus has a test chamber (predetermined space) in which a specimen to be tested is placed, and has a function of adjusting the temperature and humidity in the test chamber to a desired test environment (high temperature environment formation) Device). That is, the inside of the test chamber is controlled to a low temperature environment or, conversely, to a high temperature environment in order to evaluate the performance and durability of the sample body. At the same time, the test chamber may be placed in a high humidity environment or a low humidity environment (hereinafter, such an operation is referred to as an environmental test).

  Therefore, in the environmental test apparatus, when an environmental test is performed, a significant difference in temperature and humidity occurs between the test chamber and the outside. For example, the test chamber is excessively hot (200 to 300 degrees Celsius) or excessively cold (minus 10 to 40 degrees Celsius), but outside is at room temperature (approximately 10 to 20 degrees Celsius). Occurs. In addition, since the test room can be said to be a remarkably narrow space compared to the external environment, it is easily affected by the external environment. In other words, if there is a situation where gas can come and go unintentionally between the test room and the outside (except when gas is intentionally sent and received for the purpose of adjusting the pressure inside the test room), the environment inside the test room is There is a risk that the reliability of the test will be greatly reduced due to a large disturbance.

  On the other hand, the environmental test apparatus is provided with an opening for taking in and out the sample body in the apparatus main body provided with the test chamber. That is, the environmental test apparatus has a structure in which gas can pass between the test chamber and the outside through the opening. And in this kind of environmental test apparatus, the door body which can be opened and closed with respect to an apparatus main body is provided, and it has the structure which can close the said opening with a door body.

  In view of such circumstances, in the environmental test apparatus, the opening is surely closed by the door body in order to prevent unintended gas traffic between the test chamber and the outside during the environmental test. There is a need to. Therefore, in the environmental test apparatus, it has been required to form a sufficient seal structure between the apparatus main body and the door body.

  Therefore, conventionally, in an environmental test apparatus, a gasket is arranged between the apparatus main body and the door body, and the gasket is designed to achieve airtightness in the test chamber. For example, Patent Document 1 discloses a technique of an environmental test apparatus in which a gasket is provided on a door body, the gasket is brought into close contact with the apparatus body side, and a seal structure is formed between the apparatus body and the door body. .

JP 2012-63018 A

  However, in the conventional environmental test apparatus, the gasket provided between the apparatus main body and the door body is easily affected by a high temperature atmosphere or a low temperature atmosphere in the test chamber, and the deterioration is accelerated at an accelerated speed. There was a bug. That is, in this type of environmental test apparatus, a part of the gasket is exposed to the test chamber side, and the exposed portion is exposed to the gas flowing in the test chamber. For this reason, the gasket was greatly affected by the environment in the test room, and its life was significantly shortened from the original design life. Along with this, the gasket replacement cycle has been significantly shortened, leading to an increase in maintenance costs in the environmental test apparatus.

  In addition, the same problem is caused by a thermostatic device (or a constant temperature and humidity device), a liquid crystal display (LCD), a plasma display (PDP), an organic EL display (FPD: Flat Panel Display). It is also exposed in a heat treatment apparatus (high temperature environment forming apparatus) used for manufacturing the above.

  Therefore, in the present invention, the formation of a high-temperature environment that can suppress the influence of the gasket (contact means) provided between the apparatus main body and the door body from the environment of a predetermined space and suppress the progress of the deterioration. It is an object to provide an apparatus.

  The invention according to claim 1, which is provided to solve the above-described problem, includes a heated object placing chamber for placing an object to be heated, an opening for communicating the heated object placing chamber and the outside thereof, In a high temperature environment forming apparatus having a door capable of opening and closing an opening, a test chamber is provided between the heated object placement chamber and the door when the opening is closed. A close contact means is provided in close contact with the door or the door body side, and a shielding portion that inhibits the gas in the test chamber from flowing into the close contact means side in the vicinity of the close contact means with reference to a state in which the opening is closed. Is a high temperature environment forming apparatus.

  In the high-temperature environment forming apparatus of the present invention, a close contact means for forming a seal structure is provided between the heated object placement chamber and the door body, and a shielding portion is provided in the vicinity of the close contact means. And the shielding part has inhibited that the gas in a to-be-heated material mounting chamber flows into the contact | adherence means side. In other words, the situation where the heated object placement chamber is controlled to a high temperature atmosphere or the low temperature atmosphere is controlled so that the gas in the heated object placement chamber flows into the contact means side (the flow of gas toward the contact means). Even in the situation where the is facing, the flow is obstructed by the shielding part. As a result, in the present invention, there is no situation in which high-temperature or low-temperature gas in the object-to-be-heated object placement chamber is directly blown against the contact means, so the environment in the object-to-be-heated object placement chamber in the contact means Thus, it is possible to suppress the acceleration deterioration of the close contact means as in the prior art. As a result, shortening of the replacement cycle of the close contact means is suppressed, and an increase in maintenance cost of the high temperature environment forming apparatus can be prevented.

The invention according to claim 2 is characterized in that the close contact means and the shielding portion are arranged in a ring shape along the edge of the opening with reference to a state in which the opening is closed by the door body. The high-temperature environment forming apparatus described in 1.
The term “annular” as used herein includes not only a circular shape but also a concept of a closed shape other than a circular shape such as a rectangle.

  In the high-temperature environment forming apparatus of the present invention, the contact means is arranged along the edge of the opening, and the shielding portion is arranged along the edge of the opening as well as the contact means. While a reliable sealing structure is formed between the heated object placing chamber and the door body, it is possible to more reliably prevent deterioration of the close contact means forming the sealing structure.

  According to a third aspect of the present invention, the door body has a convex shape in which a part of the door is fitted into the opening when the opening is in a closed state. It is an environment forming device.

  In the high temperature environment forming apparatus of the present invention, the door body is provided with a convex part, and the part is fitted into the opening. The convex portion of the door body can be arranged so as to be shielded from the object-to-be-heated object mounting chamber. This makes it difficult for the gas in the heated object placement chamber to reach the close contact means side. In the present invention, as described above, since the shielding portion is provided in the vicinity of the close contact means, the close contact means is directly exposed to the gas flowing in the heated object placement chamber by their synergistic effect. It is possible to more effectively prevent such a phenomenon.

  In the invention according to claim 4, the door body has a fitting portion that fits into the opening and a non-fitting portion that does not fit into the opening, and a gap is formed between the fitting portion and the opening. The high-temperature environment forming apparatus according to claim 3, wherein the shielding portion is positioned in the gap in a state where the door closes the opening.

Here, the gap formed between the fitting portion and the opening (opening edge) is a structurally necessary gap in order to perform the opening / closing operation of the door body. The structural gap is formed by making the size of the fitting portion of the door body slightly smaller than the size of the opening. Specifically, when the door is opened and closed, the fitting portion is set to a size such that the locus of the fitting portion does not collide with the opening edge.
On the other hand, when the close contact means is arranged on the extension, the structural gap can be a gas path connected to the close contact means.

Therefore, the invention according to claim 4 has a configuration in which a shielding plate is arranged at any position of a gap formed in a state where the opening is closed by the door body. With this configuration, the gas in the heated object placement chamber is prevented from flowing into the gap, so that the progress of deterioration of the contact means can be suppressed more effectively.
As described above, the gap formed between the door body and the opening edge is structurally necessary, and is formed according to the locus of the fitting portion when the door body is opened and closed. Is. Therefore, it is necessary to consider the installation position of the shielding plate so as not to obstruct the opening and closing of the door body even if it is on the gap.

  The invention according to claim 5 is characterized in that the close contact means includes a plurality of seal portions, and the plurality of seal portions seals the space between the object-to-be-heated object placement chamber and the door body in a multiple manner. The high-temperature environment forming apparatus according to any one of claims 1 to 4.

  The high-temperature environment forming apparatus of the present invention can seal the space between the object-to-be-heated object mounting chamber and the door body by the plurality of seal portions of the close contact means. The sealing performance between the two can be improved. In addition, if a multiple seal structure is formed by a plurality of seal portions and an air layer is interposed between adjacent seal portions, the heat in the heated object placement chamber becomes difficult to transfer to the outside, so that the device It is possible to prevent a problem that the exterior of the battery becomes excessively hot or excessively cold. In addition, when the exterior of the apparatus becomes excessively low in temperature, condensation may occur on the exterior surface or frost formation may occur, so that such problems can be suppressed.

  In the invention according to claim 6, the contact means includes a plurality of seal portions and an abutting portion with which the seal portion abuts when the opening is closed by the door body. The high-temperature environment forming apparatus according to claim 1, wherein the high-temperature environment forming apparatus is formed of a metal.

  Here, in addition to the conventional abutting portion, conventionally, a heat-resistant resin has been employed for the abutting portion with which the seal portion abuts. This is to prevent heat in the heated object placement chamber from being transferred to the exterior of the apparatus through the contact portion (so-called heat cutting), and is common knowledge in this technical field. However, in recent years, the environment to which the sample body is exposed tends to be higher or lower, and therefore, it has been necessary to select a more expensive heat-resistant resin as the resin used for the contact portion. Yes. That is, this type of resin contact portion has become one of the causes for increasing the manufacturing cost of the entire apparatus. Therefore, the resin contact portion is configured to increase the yield in order to reduce the cost as much as possible. Specifically, as shown in FIG. 12, the resin contact portion 101 has a configuration in which four linear plates 102 to 105 are combined.

  Moreover, since the main part of the high-temperature environment forming apparatus is made of metal, the contact portion is fixed to the metal. However, metals and resins not only have different thermal conductivities, but also have different thermal expansion coefficients. That is, even if it is a case where a metal and resin are exposed to the same temperature environment, each elongation rate differs. In particular, the difference in elongation between metals and resins tends to increase as they are exposed to a high temperature environment. Therefore, when the heated object placement chamber is controlled to a high temperature environment, the resin contact portion may be damaged due to the difference in elongation.

Therefore, in order to solve such a problem, the high temperature environment forming apparatus according to claim 6 employs a contact portion formed of metal. Thereby, in this invention, there is no possibility that a contact part will be damaged by the difference in the elongation rate of a raw material like the past.
In addition, as a metal used for the contact portion, for example, if the same metal as the portion (fixed portion) to which the contact portion is fixed is adopted, both the contact portion and the fixed portion have the same thermal expansion coefficient. It can be.

  Furthermore, in the present invention, the contact portion is formed of metal, thereby succeeding in cost reduction and improvement in work efficiency during assembly. That is, as described above, conventionally, it has been necessary to select a resin that can withstand a high-temperature environment. Accordingly, the resin contact portion has a four-member configuration as described above in order to increase the yield even a little. On the other hand, if the contact portion is formed of a metal (for example, stainless steel), the unit price of the material can be suppressed. Therefore, the cost can be significantly reduced as compared with the case where the resin is used regardless of whether the yield is good or bad. It becomes possible. At the same time, according to the present invention, it is not necessary to consider the yield, and what is configured with four members can be made into one member, so that work efficiency at the time of assembly can be improved.

  The high-temperature environment forming apparatus according to the present invention is an environmental test apparatus capable of exposing a test object as an object to be heated to a desired environment, and the object to be heated mounting chamber is a test chamber for mounting the object to be tested. It is recommended that a desired temperature and / or humidity environment can be created therein, and that the opening is an opening for taking in and out the test object from the test room. (Claim 7)

  The high-temperature environment forming apparatus of the present invention is a heat treatment apparatus, the object to be heated mounting chamber is a heat treatment chamber for heat treating a work as an object to be heated, and the opening is an opening for taking in and out the work from the heat treatment chamber It is recommended that (Claim 8)

  The high-temperature environment forming apparatus of the present invention is provided with a shielding portion in the vicinity of a close contact means provided between a predetermined space (test room or heat treatment chamber) and a door body, and the predetermined space in the close contact means is provided in the predetermined space. Since it is possible to suppress the influence received from the environment to be formed, it is possible to suppress the progress of deterioration of the contact means.

It is a perspective view which shows the environmental test apparatus which concerns on embodiment of this invention. It is a perspective view which shows the state which open | released the door body of the environmental test apparatus of FIG. It is a conceptual diagram which shows the internal structure of the environmental test apparatus of FIG. It is sectional drawing which paid its attention to the apparatus opening vicinity of an apparatus main body. It is a front view which shows a frame member. It is the perspective view which paid its attention to the back side of a door. It is sectional drawing which shows a door body. It is a disassembled perspective view which shows a shielding member. It is sectional drawing which shows the state which closed the apparatus opening with the door body. It is sectional drawing which shows the modification of a shielding member, (a) shows the state in which the shielding member was installed in the door main body, (b) shows the state in which the shielding member was installed in the apparatus main body. It is sectional drawing which shows the modification of a door body. It is explanatory drawing which shows the resin-made contact parts in the conventional environmental test apparatus.

Below, the environmental test apparatus which concerns on embodiment of this invention is demonstrated.
An environmental test apparatus (high temperature environment forming apparatus) 1 according to the present embodiment is a so-called cold shock test apparatus, and applies hot air or cold air to a sample body (object to be heated) such as an electronic component or an electronic device in a predetermined cycle. It is an apparatus that has a function of sending a thermal stress to the sample body. In this embodiment, as shown in FIGS. 1 and 2, as a main configuration, a rectangular parallelepiped device body 4 and a door body 6 that can be opened and closed with respect to the device body 4 are provided.
In addition, both the apparatus main body 4 and the door body 6 have a structure provided with heat insulation.

  As shown in FIG. 3, the apparatus main body 4 has a test chamber (a heated object mounting chamber) 5 in which a sample body is placed and a high-temperature chamber capable of sending hot air to the test chamber 5. 2 and a low temperature chamber 3 capable of sending cold air to the test chamber 5. In the present embodiment, the high temperature chamber 2 is disposed at the upper portion and the low temperature chamber 3 is disposed at the lower portion with the test chamber 5 as a reference. In addition, vents 20 communicating with each other are provided between the test chamber 5 and the high temperature chamber 2 and between the test chamber 5 and the low temperature chamber 3. Each vent 20 is provided with a damper 21 that restricts the passage of gas between the chambers.

  The test chamber (object-to-be-heated object mounting chamber) 5 is a portion where a desired environment is formed, and a plurality of (two in the present embodiment) mounting shelves 24 on which the sample body is mounted, and the test chamber 5. It has a test chamber side temperature sensor 34 for detecting the ambient temperature inside.

  The high greenhouse 2 is a part having a function of heating the gas in the room to a preset temperature on the high temperature side, and circulating the heated gas between the test room 5 and the main structure. A heater 22 for heating, a high-temperature side fan 23 for circulating gas, and a high-temperature side temperature sensor 25 for detecting the atmospheric temperature in the high-temperature chamber 2 are provided.

The low greenhouse 3 is a part having a function of cooling the indoor gas to a preset temperature on the low temperature side and circulating the cooled gas between the test chamber 5 and the main structure. A cooler 26 that circulates the gas, a low-temperature blower 27 that circulates the gas, an adjustment heater 28 that finely adjusts the temperature of the cooled gas, and a low-temperature-side temperature sensor 30 that detects the ambient temperature in the low-temperature chamber 3.
The cooler 26 is a part of a known refrigerator 29 having a refrigeration cycle, and is specifically an evaporator.

Further, as shown in FIG. 2, the apparatus main body 4 is provided with an apparatus opening 11 for taking a sample body into and out of the test chamber 5 on the front side thereof. The device opening 11 is disposed at a position where the inside and the outside of the test chamber 5 communicate with each other, and the shape when viewed from the front is a substantially rectangular shape (a rectangular shape whose length in the width direction of the device body 4 is long). . The size of the device opening 11 is approximately the same as that of one surface (one surface on the front side) of the substantially rectangular parallelepiped test chamber 5.
Note that the opening edge of the device opening 11 is subjected to hemming bending (brushed fold) processing, and the portion protrudes outward from the device main body 4.

Further, as shown in FIGS. 2 and 4, the apparatus main body 4 is provided with a frame member (contact part) 12 on which a seal part to be described later comes into contact with a part along the opening edge of the apparatus opening 11. The frame member (part of the close contact means) 12 is a frame-like plate body formed of a predetermined metal (for example, stainless steel). More specifically, as shown in FIG. 5, the frame member 12 is processed by punching a part of one rectangular metal plate in the member thickness direction, and the planar frame-shaped portion 31. And a frame opening 32 which is a punched portion.
In the present embodiment, the frame opening 32 has substantially the same size and shape as the device opening 11.

On the other hand, as shown in FIGS. 1 and 2, the door body 6 is a hinged door attached to the apparatus main body 4 via a hinge 40, and the main structure is as shown in FIG. 6. A main body 13, a seal part (a part of the close contact means) 15, and a shielding member 17 are provided.
In the following, the direction based on the apparatus main body 4 is used unless otherwise specified.

  The door main body 13 has a shape whose external appearance protrudes in one direction, and has a rectangular parallelepiped convex portion 35 as shown in FIGS. Specifically, in this embodiment, a base portion (non-fitting portion) 36 is provided on the front side of the door body 13, and a convex portion (fitting portion) that fits into the device opening 11 on the back side of the base portion 36. 35 is provided. More specifically, as shown in FIG. 7, the door main body 13 has a stepped cross-sectional shape and exposes an edge side on the back side of the base portion 36 (hereinafter referred to as a base edge portion 43). In this state, the convex portion 35 is superposed in the thickness direction of the door body 13 (the direction from the front side to the back side). That is, the door body 13 has a structure in which the thickness on the center side (the portion where the convex portion 35 is located) is increased compared to the edge side (the portion where the base edge portion 43 is located).

The convex portion 35 includes a back wall 41 that forms a protruding side surface from the base portion 36, and side walls 42 a to 42 d that protrude from the sides (each of the four sides) of the back wall 41 to the front side. It is formed with. Then, as shown in FIG. 9, the convex portion 35 is a periphery of the convex portion 35 in a state where the convex portion 35 is fitted into the device opening 11, and the side walls 42 a to 42 d of the convex portion 35 and the edge portion of the device opening 11. It is designed in such a size that a substantially uniform gap s is formed between the two.
On the other hand, the base portion 36 is a portion exposed to the front side of the apparatus main body 4 and is provided with a lever 45 (FIG. 1) for opening and closing the door body 6.

The seal portion (a part of the close contact means) 15 is a so-called gasket, and is a portion that is provided on the door main body 13 and improves the sealing performance between the door main body 13 and the apparatus main body 4. Specifically, as shown in FIG. 6, the seal portion 15 is attached to the base edge portion 43 of the door body 13, and when the device opening 11 is closed by the door body 6, the frame member 12 of the device body 4. This is a portion in close contact with the frame-shaped portion 31.
In addition, in this embodiment, although the structure which provided this seal | sticker part 15 in the door main body 13 was shown, you may provide in the apparatus main body 4 side.

In the present embodiment, the seal portion 15 is configured by two seal forming members 37 and 38. Each of the seal forming members 37 and 38 is a long and flexible member. As shown in FIGS. 6 and 7, one seal forming member (hereinafter referred to as an inner seal) 37 is convex. At a position close to the shape portion 35, it is fixed in an annular shape so as to surround the periphery thereof, and the other seal forming member (hereinafter referred to as an outer seal) 38 is positioned on the outer peripheral side of the inner seal 37. And fixed in a ring-like state. That is, the seal portion 15 forms a double seal structure by the two inner seals 37 and the outer seals 38, and is arranged so as to be separated from each other by a certain distance.
In the present embodiment, both the inner seal 37 and the outer seal 38 are made of silicon.

  The shielding member 17 is provided in the door main body 13 and suppresses the gas in the test chamber 5 from flowing into the gap s formed between the door main body 13 and the edge of the device opening 11. . On the other hand, since the shielding member 17 can also block the opening / closing operation of the door main body 13 with respect to the apparatus main body 4, the door main body 13 can be opened / closed with respect to the apparatus main body 4 and the gap is as much as possible. It is preferable to install so as to shield s. Therefore, in this embodiment, as shown in FIG. 9, when the shielding member 17 is attached to the convex portion 35 of the door body 13 and the device opening 11 is closed by the door body 6 as shown in FIG. 6. It is installed so as to shield approximately 50% or more of the opening area of the gap s, and more preferably 60 to 80% of the opening area of the gap s.

  And in this embodiment, this shielding member 17 is comprised by the elongate L-shaped metal fitting 45 which exhibited the "L" -shaped cross section shown in FIG. That is, the shielding member 17 closes the gap s with the other surface (shielding surface q) while fixing one surface (fixed surface p) of the L-shaped metal fitting 45 to the side walls 42a to 42d. More specifically, the shielding member 17 has four L-shaped brackets 45 a to 45 d, and the L-shaped brackets 45 a to 45 d are arranged and fixed so as to surround the side walls 42 a to 42 d of the convex portion 35. Is done. That is, the shielding member 17 is a frame structure formed by fixing the four L-shaped metal fittings 45 a to 45 d to the convex portion 35.

Next, the operation | movement at the time of the environmental test of the environmental test apparatus 1 of this embodiment is demonstrated.
In the following description, a thermal shock test (environmental test) in which a series of test cycles are repeated a predetermined number of times in the order of a high temperature exposure test and a low temperature exposure test will be described.

  When the thermal shock test is started, the environmental test apparatus 1 of the present embodiment first starts the first cycle high-temperature exposure test. That is, in the environmental test apparatus 1, the inside of the high temperature chamber 2 is heated to a preset target temperature with the damper 21 closed. Thereafter, when the atmospheric temperature in the high temperature chamber 2 reaches the target temperature, the damper 21 between the high temperature chamber 2 and the test chamber 5 is opened, and hot air is circulated between the high temperature chamber 2 and the test chamber 5. Let As a result, an air flow is generated in the test chamber 5 by the high-temperature gas sent from the high-temperature chamber 2. Thus, the inside of the test chamber 5 is rapidly heated, and a high temperature thermal shock is given to the sample body. The high temperature exposure test is performed for a predetermined time set in advance.

When a predetermined time elapses after the high temperature exposure test is started, the damper 21 between the high temperature chamber 2 and the test chamber 5 is closed to end the high temperature exposure test, and the low temperature exposure test of the same cycle is started.
Here, when the low-temperature exposure test is executed, a pre-cooling operation for cooling the inside of the low-temperature chamber 3 in advance is performed before the test operation is started. That is, the inside of the low temperature chamber 3 is cooled to a preset target temperature simultaneously with the start of the high temperature exposure test or at a different timing. And in the state which cooled the inside of the low temperature chamber 3 in this way, completion | finish of a high temperature exposure test is waited.
That is, when the high temperature exposure test is completed and the low temperature exposure test is started, the damper 21 between the low temperature chamber 3 and the test chamber 5 is opened, and the cold air generated in the low temperature chamber 3 is transferred to the low temperature chamber 3. Circulate with test chamber 5. As a result, an air flow is generated in the test chamber 5 by the low-temperature gas fed from the low-temperature chamber 3. Thus, the inside of the test chamber 5 is rapidly cooled, and a low temperature thermal shock is given to the sample body. This low temperature exposure test is performed for a predetermined time set in advance.

  When the low-temperature exposure test of the first cycle is completed in such a flow, the next cycle is entered, and the high-temperature exposure test and the low-temperature exposure test are performed as described above. The thermal shock test is repeated until a predetermined number of cycles set in advance is reached.

Next, characteristic functions of the environmental test apparatus 1 of the present embodiment will be described.
As described above, in the environmental test apparatus, in order to maintain a certain airtightness in the test chamber, the sealability between the apparatus main body and the door body is important. Therefore, conventionally, the environmental test apparatus has provided a gasket (seal part) between the apparatus main body and the door body to ensure airtightness in the test chamber. On the other hand, since this gasket is partially exposed to the test chamber, when an environmental test is performed, the gasket is directly exposed to the test environment formed in the test chamber and deteriorates at an accelerated rate. I had it.

Therefore, in the present embodiment, as described above, the shielding member 17 is provided on the door body 13 so that the seal portion 15 is not directly exposed to the environment of the test chamber 5. Moreover, in this embodiment, the convex part 35 is provided in the door main body 13 from the same viewpoint. That is, in this embodiment, the function (shielding function) which shields the seal part 15 from the area | region where the test environment in the test chamber 5 is formed by both the shielding member 17 and the convex-shaped part 35 is provided.
This will be described in detail below.

  As described above, the environmental test apparatus 1 has a function of performing a thermal shock test as an environmental test. And when implementing a thermal shock test, as shown in FIG. 9, the door body 6 is the state which closed the apparatus opening 11 of the apparatus main body 4. As shown in FIG. In a state where the device opening 11 is closed, the convex portion 35 of the door body 13 is inserted into the device opening 11 of the device body 4. That is, when the convex portion 35 is inserted into the device opening 11, the side walls 42 a to 42 d of the convex portion 35 are arranged to face the edge of the device main body 11. A gap s of a predetermined size is formed between the convex portions 35 arranged in opposition and the edge of the device opening 11, and the shielding member 17 is disposed. At this time, the shielding member 17 is in such a posture that the shielding surface q closes most of the gap s.

  On the other hand, the base 36 side of the door main body 13 is disposed outside the apparatus main body 4 and at a position deviating from the apparatus opening 11. Then, the seal portion 15 provided at the base edge portion 43 of the base portion 36 is in close contact with the frame-like portion 31 of the frame member 12 provided in the apparatus main body 4. Further, at this time, a gap t of a predetermined size is formed between the base edge portion 43 and the frame member 12 in a portion other than the seal portion 15 on the test chamber 5 side (inner side). . The gap t on the base portion 36 side communicates with the gap s on the convex portion 35 side. That is, the seal portion 15 is positioned on the extension of the gap s on the convex portion 35 side.

  Therefore, in the present embodiment, the seal portion 15 is positioned on the extension of the gap s by providing the convex portion 35 on the back side of the door body 13. That is, in the present embodiment, the seal portion 15 is not exposed to the test chamber 5 side as in the prior art, and the seal portion 15 is substantially isolated from the test chamber 5 by the convex portion 35. Yes. On the other hand, since the seal portion 15 is disposed at a position communicating with the test chamber 5 via the gap s, the test chamber 5 is heated or cooled in the gap s by the air flow generated in the test chamber 5. However, as described above, the shielding member 17 that blocks the inflow of gas is provided in the gap s.

  Thus, in this embodiment, since the seal portion 15 is arranged on the extension of the gap s and the shielding member 17 is provided in the gap s, the influence of the test environment in the test chamber 5 is greatly reduced. Can do. As a result, in this embodiment, since the seal part 15 is suppressed from being directly exposed to the high-temperature or low-temperature gas in the test chamber 5, the seal part 15 may be accelerated and deteriorated. It is suppressed.

Moreover, in this embodiment, since the metal frame member 12 was adopted instead of the resin frame member that has conventionally performed the heat cutting function, the exterior of the apparatus main body 4 is excessively heated or increased due to the improvement in heat conductivity. Although there is a concern that the temperature becomes low, such a concern is eliminated by providing the seal portion 15 that forms a double seal structure. That is, the seal portion 15 includes two seal forming members 37 and 38, which are arranged in parallel so as to be separated from each other by a predetermined distance. Therefore, when the seal portion 15 is in close contact with the frame member 12, an air layer v is formed between the seal forming members 37 and 38 as shown in FIG. That is, the air layer v performs a heat cutting function. Moreover, the above-mentioned convex part 35 of the door body 6 and the action of the shielding member 17 also work, and an excessive temperature change of the exterior that can occur in the apparatus main body 4 can be suppressed more effectively.
Therefore, in this embodiment, even if the metal frame member 12 is used, there is no possibility that the exterior of the apparatus body 4 becomes excessively hot or cold.

And in order to demonstrate the effect of this embodiment, the experiment shown below was conducted.
The environmental test apparatus (example) 1 of the present embodiment and the conventional environmental test apparatus (comparative example) are subjected to the above-described environmental test under the same test conditions (target temperature to be set, etc.), and the high temperature exposure test The measured temperatures of the inner seal 37 and the outer seal 38 at the time were compared.

The test conditions of the conducted tests are as follows.
The high temperature exposure test was conducted continuously for 4 hours.
High temperature exposure test set temperature: 300 degrees Celsius High temperature exposure test duration: 4 hours

  In the example, the measured temperature of the inner seal 37 was about 40 degrees lower than the comparative example, and a temperature drop of about 16% was observed. Further, the outer seal 38 was substantially the same in both the comparative example and the example. Thereby, compared with resin, it became possible to use the metal (for example, stainless steel) with high heat conductivity as a material of the frame member 12. FIG.

  In the above embodiment, a configuration is shown in which a shielding member 17 having an L-shaped cross section is provided in a gap s formed between the apparatus main body 4 and the door main body 13 and the gap s is generally shielded. However, the present invention is not limited to this. That is, another configuration that can substantially shield the gap s without providing the shielding member in the gap s may be used. For example, as shown in FIG. 10A, a flat shield member 51 is provided on the rear end side of the door body 13 (the test chamber 5 side), that is, on the rear wall 41 to substantially shield the gap s. As shown in FIG. 10B, a flat shielding member 51 is provided at a position on the inner side of the apparatus main body 4 and closer to the inner side (test chamber 5 side) than the apparatus opening 11. There are those that generally shield s.

  In the said embodiment, although the convex part 35 was provided in the door main body 13 and the structure which fits the door main body 13 in the apparatus opening 11 was shown, this invention is not limited to this, The convex part 35 is provided. There may be a configuration in which a door body is not used. However, when this configuration is adopted, as shown in FIG. 11, the gap s is not formed between the door main body 50 and the apparatus opening 11, so that the shielding member 17 is the base 36 of the door main body 13. It is necessary to provide in the place corresponding to.

  Moreover, in the said embodiment, although the structure which made the shielding member 17 the 4 member structure was shown, this invention is not limited to this, The 4 members may be integrally molded previously.

  In the above-described embodiment, the seal portion 15 in which the double seal structure is formed by the two seal forming members 37 and 38 is shown. However, the present invention is not limited to this, and the seal structure having a single layer or a triple layer or more is used. You may employ | adopt the formed seal part.

  In the said embodiment, although the structure which provided the shielding member 17 in the door main body 13 was shown, this invention is not limited to this, The structure provided in the apparatus main body 4 may be sufficient. That is, the shielding member 17 is provided at the edge of the device opening 11.

  In the said embodiment, although the structure provided with the apparatus opening 11 which exhibited the rectangular shape in the apparatus main body 4 was shown, this invention is not limited to this, For example, circular, square, other polygons, etc. It may be an opening having a shape. Accordingly, it is preferable to match the shape of the seal portion 15 to the shape of the device opening 11.

In the above embodiment, the environment test apparatus 1 has been described as an example of the high temperature environment forming apparatus. It may be a device. That is, in general, a heat treatment apparatus has a heat treatment chamber (object to be heated) for heat treating a workpiece, and the apparatus main body and the door body are arranged to adjust the heat treatment chamber to a predetermined temperature environment. In the meantime, the same structure as the environmental test apparatus is formed. Therefore, even if this heat treatment apparatus is provided with the same configuration as that of the above-described embodiment, the same effect can be expected.
Similarly, the high-temperature environment forming device may not be a device for the purpose of the thermal shock test, but may be another environmental test device such as a temperature cycle test device, a constant temperature device or a constant temperature and humidity device.

1 Environmental test equipment (high temperature environment forming equipment)
2 High greenhouse 3 Low greenhouse 4 Device body 5 Test room 6 Door body 11 Device opening 12 Frame member (contact part, contact means)
13 Door body 15 Sealing part (contacting means)
17 Shielding member 37 Inner seal (seal forming member)
38 Outer seal (seal forming member)
40 Hinge s Clearance

Claims (8)

A high temperature having a heated object placement chamber for placing an article to be heated, an opening communicating the heated object placement chamber and the outside thereof, and a door capable of opening and closing the opening. In environment forming equipment,
When the opening is in a closed state, a close contact means is provided between the object-to-be-heated object placement chamber and the door body, and the opening is closed. As a reference, a high-temperature environment forming apparatus characterized in that a shielding portion is provided in the vicinity of the close contact means to prevent the gas in the test chamber from flowing into the close contact means.   The high-temperature environment forming apparatus according to claim 1, wherein the close contact means and the shielding portion are annularly arranged along an edge of the opening with reference to a state in which the opening is closed by the door body.   3. The high-temperature environment forming apparatus according to claim 1, wherein when the opening is in a closed state, a part of the door has a convex shape that fits into the opening. The door body has a fitting portion that fits into the opening and a non-fitting portion that does not fit into the opening, and a gap is formed between the fitting portion and the opening.
The high-temperature environment forming apparatus according to claim 3, wherein the shielding portion is located in the gap in a state where the door closes the opening.   The close contact means includes a plurality of seal portions, and the plurality of seal portions seals the space between the object-to-be-heated object placement chamber and the door body in multiple. The high-temperature environment forming apparatus described in 1.   The contact means includes a plurality of seal portions and a contact portion with which the seal portion comes into contact when the opening is closed by the door body, and the contact portion is formed of metal. The high-temperature environment forming apparatus according to any one of claims 1 to 5,   The high-temperature environment forming apparatus is an environmental test apparatus capable of exposing a test object as a heated object to a desired environment, and the heated object mounting chamber is a test chamber for mounting the test object, 7. A desired temperature and / or humidity environment can be created therein, and the opening is an opening for taking in and out a test object from a test room. High temperature environment forming device.   The high-temperature environment forming device is a heat treatment device, the heated object mounting chamber is a heat treatment chamber for heat-treating a workpiece as a heated object, and the opening is an opening for taking in and out the workpiece from the heat treatment chamber. The high-temperature environment forming apparatus according to any one of claims 1 to 6.

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