JP2009257679A - Heat-insulating panel and environmental test device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress degradation in the heat insulation properties of a heat-insulating panel, by relieving the pressure fluctuation in the heat-insulating panel. <P>SOLUTION: The body 40a of this heat-insulating panel are provided with the body 40a formed with a communication hole 42b and partitioned into a heat-insulating chamber SI with a heat-insulating material 40b arranged and a buffer chamber SB for communicating with the outside through the communicating hole 42b, and is provided with a bag 50a for relieving the pressure variation in the heat-insulating chamber SI, by changing volume in the buffer chamber SB according to the pressure variation in the heat-insulating chamber SI. The bag 50a may be arranged, in order to be in contact with the heat-insulating material 40b or may be arranged so as not to be in contact with the heat-insulating material 40b, by partitioning the body 40a by means of a partitioning plate 55. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a heat insulation panel and an environmental test apparatus.

Conventionally, as disclosed in Patent Documents 1 and 2 below, a heat insulating panel in which a plurality of panel materials such as sheet metal are assembled in a hollow shape and a heat insulating material is provided therein is known. This heat insulation panel has a configuration in which panel members are joined together at their ends. More specifically, the end portions of the panel material are bent, the bent end portions are overlapped and fastened with rivets, thereby forming a hollow shape. This heat insulation panel is used as the outer wall of the cooling storage. When the pressure inside the box surrounded by the heat insulation panel fluctuates, a pressure difference is generated inside and outside the heat insulation panel. obtain. And when the pressure in a store | warehouse | chamber falls, external air may infiltrate into the heat insulation panel from the outside of the store | warehouse | chamber, and the water | moisture content contained in external air may condense and accumulate in a heat insulation panel. In Patent Document 2, as a countermeasure, a seal material having a low water vapor transmission rate is provided at the joint portion of the panel material on the outside of the warehouse, while an opening is provided at the joint portion of the panel material on the inside of the warehouse. Thereby, intrusion of outside air from the outside of the cabinet is suppressed, and even if outside air has entered, the outside air is discharged to the inside of the cabinet and dew condensation in the heat insulating panel is suppressed. In addition, even the thing of patent document 1 is made to discharge | release the external air which penetrate | invaded in the heat insulation panel to the warehouse inner side by providing an opening part in the panel material inside a warehouse.
JP 2007-17144 A JP 2007-17145 A

  In the conventional heat insulation panels disclosed in Patent Documents 1 and 2, the outside air that has entered from the outside of the cabinet through the joint portion of the panel material is discharged to the inside of the cabinet, so that the outside air passes through the inside of the heat insulation panel. For this reason, it is inevitable that moisture remains in the heat insulation panel, although it is easy to release the outside air to the inside by providing an opening in the joint portion of the inside panel material. . In particular, if the temperature inside the warehouse is low, it is inevitable that condensation occurs in the heat insulation panel. Therefore, there is a problem that heat insulation performance of the heat insulation panel deteriorates due to repeated moisture accumulation.

  Therefore, the present invention has been made in view of the above points, and the object of the present invention is to reduce the condensation in the heat insulation panel and reduce the heat insulation performance by relaxing the pressure fluctuation in the heat insulation panel. And to prevent the occurrence of water leakage.

  In order to achieve the above-mentioned object, the present invention is a heat insulation panel comprising a hollow main body configured to be assembled with a plurality of panel members, and a heat insulating material provided inside the main body. The body portion is provided with a communication hole, and the inside of the body portion is partitioned into a heat insulating chamber in which the heat insulating material is disposed and a buffer chamber communicating with the outside through the communication hole, and according to a pressure change in the heat insulating chamber. The heat insulation panel includes a pressure adjustment unit that reduces the pressure change in the heat insulation chamber by changing the volume in the buffer chamber.

  In the present invention, when the air in the heat insulation chamber becomes hot and expands, the pressure in the heat insulation chamber rises, and the pressure adjustment unit functions so that the volume in the buffer chamber decreases accordingly. At this time, the air in the buffer chamber is released to the outside of the heat insulating panel through the communication hole according to the degree of expansion of the air in the heat insulating chamber. That is, the volume occupied by the buffer chamber in the heat insulation panel decreases and the volume occupied by the heat insulation chamber increases. Therefore, even when the temperature in the heat insulation chamber rises, pressure fluctuations in the heat insulation chamber can be reduced. On the other hand, when the air in the heat insulation chamber becomes low temperature and contracts, the pressure adjusting unit functions so that the volume in the buffer chamber increases accordingly. That is, air (outside air) outside the heat insulation panel flows into the buffer chamber through the communication hole according to the degree of contraction of the air in the heat insulation chamber. At this time, the outside air apparently flows into the heat insulating panel, but the heat insulating chamber is partitioned from the buffer chamber in an airtight manner, so that the outside air does not enter the heat insulating chamber. As a result, the volume occupied by the buffer chamber in the heat insulating panel increases and the volume occupied by the heat insulating chamber decreases. For this reason, even when the temperature in the heat insulation chamber falls, the pressure change in the heat insulation chamber can be reduced. Therefore, in this heat insulation panel, it is possible to suppress the outside air from entering the heat insulation chamber through a joint portion or a seal portion between the panel members constituting the main body portion, so that dew condensation can be suppressed in the heat insulation chamber, Wetting of the heat insulating material and accumulation of moisture can be suppressed. Thereby, deterioration of heat insulation performance and generation | occurrence | production of water leakage can be suppressed.

  Here, the said pressure adjustment part may be comprised by the deformable bag body. In this aspect, the bag body deforms easily following the pressure change in the main body. That is, when the pressure in the heat insulation chamber rises, a pressure difference is generated between the buffer chamber and the bag body is deformed so that the volume of the buffer chamber is reduced by the pressure difference. The bag body is deformed so that the volume of the buffer chamber increases due to the differential pressure. Therefore, even when the temperature change amount in the heat insulation chamber is small, the pressure fluctuation in the heat insulation chamber can be suppressed.

  The pressure adjusting unit may be configured by a deformable film body. In this aspect, the film body naturally deforms following the pressure change in the main body easily. That is, when the pressure in the heat insulation chamber rises, a pressure difference is generated between the buffer chamber and the film body is deformed so as to reduce the volume of the buffer chamber due to the pressure difference. The film body is deformed so that the volume of the buffer chamber increases due to the differential pressure. Therefore, even when the temperature change amount in the heat insulation chamber is small, the pressure fluctuation in the heat insulation chamber can be suppressed.

  In the aspect in which the pressure adjusting unit is configured by a bag body or a film body, when a through portion that penetrates the heat insulating panel in the thickness direction is provided, the through portion is inserted through the bag body or the film body. A through-hole that is disposed at the periphery and whose peripheral edge is sealed may be provided. In this aspect, it is possible to wire a cable or the like through the penetrating portion of the heat insulating panel while ensuring prevention of outside air from entering the heat insulating chamber.

  In this aspect, it is preferable that a large number of the communication holes are provided. In this aspect, the film body can be freely deformed. However, since a large number of communication holes are provided in the main body, the situation where the film body blocks the communication holes and obstructs the air flow is avoided. be able to.

  The pressure adjusting unit may be disposed in contact with the heat insulating material. In this aspect, since the pressure adjusting unit can be pressed by the restoring force of the heat insulating material, the air in the buffer chamber can be pushed out using the restoring force of the heat insulating material.

  A partition plate having a through hole is disposed in the heat insulation chamber, and the heat insulation chamber includes a first chamber in which the heat insulation material is disposed, and the pressure adjusting unit without the heat insulation material disposed. You may partition with the arrange | positioned 2nd chamber. In this aspect, even when the pressure adjusting unit functions so that the air in the heat insulating chamber contracts and the volume in the buffer chamber increases, the pressure adjusting unit does not directly receive the force of the heat insulating material due to the presence of the partition plate. It is possible to easily follow the pressure change in the room.

  The buffer chamber may be formed in a shape that is long in the vertical direction, and may be disposed along the inner surface of the side wall of the main body. In this aspect, when the heat insulation panel is arranged and used in a vertically long posture, the pressure adjusting unit is arranged along the longitudinal direction of the heat insulation panel. For this reason, since the thickness of a heat insulating material becomes equal in the longitudinal direction of a heat insulation panel, the bias of the heat insulation performance of a heat insulation panel can be prevented.

  In this aspect, the communication hole may be located at a lowermost portion of the pressure adjusting unit. In this aspect, the dew condensation water in the buffer chamber can be drained through the communication hole.

  A blower capable of blowing air toward the buffer chamber may be provided, and the communication hole may be formed by a blower passage of the blower. In this aspect, since the buffer chamber communicates with the outside through the blower air passage, air flows between the buffer chamber and the outside through the air passage when the blower is not driven. When the air in the heat insulation chamber contracts, the air is forced to flow into the buffer chamber by the blower and pressure is applied to increase the volume in the buffer chamber. Thereby, the pressure in a heat insulation chamber increases and it can make it difficult for air to penetrate | invade into a heat insulation chamber.

  The present invention is an environmental test apparatus that can apply a thermal load to a sample in a test chamber by changing the temperature in the test chamber, and includes a wall body constituted by the heat insulation panel, and the buffer chamber of the heat insulation panel is insulated. It is an environmental test apparatus arrange | positioned so that it may be located in the outer wall side of the said wall body with respect to a chamber.

  In the present invention, when the temperature in the test chamber rises, the heat is transferred to the heat insulation chamber through the panel material, and the air in the heat insulation chamber is heated to expand. As a result, the pressure in the heat insulation chamber rises, and the pressure adjustment unit functions so that the volume in the buffer chamber decreases accordingly. At this time, since the air in the buffer chamber is released to the outside of the heat insulating panel through the communication hole according to the degree of expansion of the air in the heat insulating chamber, the pressure fluctuation in the heat insulating chamber can be reduced even when the temperature of the heat insulating chamber is increased. it can. On the other hand, when the temperature in the test chamber becomes low, the air in the heat insulation chamber becomes low temperature and contracts. Accordingly, a pressure difference between the heat insulation chamber and the buffer chamber is generated, and the pressure adjusting unit functions so that the volume in the buffer chamber is increased. As a result, the volume occupied by the buffer chamber in the heat insulating panel increases and the volume occupied by the heat insulating chamber decreases. For this reason, even when the temperature in the heat insulation chamber falls, the pressure change in the heat insulation chamber can be reduced. Therefore, according to this environmental test apparatus, it is possible to suppress the outside air from entering the heat insulation chamber through the joint portion or the seal portion between the panel members constituting the main body portion of the heat insulation panel. It is possible to suppress wetness of the heat insulating material and accumulation of moisture. Thereby, deterioration of heat insulation performance and generation | occurrence | production of water leakage can be suppressed.

  Here, at least a part of the panel material of the heat insulation panel that becomes the inner wall of the test chamber may be provided with a moisture desorption layer made of a hygroscopic material. In this aspect, when condensation occurs in the heat insulation chamber, moisture is adsorbed at a low temperature by the moisture desorption layer to suppress the occurrence of condensation, while when the test chamber becomes hot, the moisture adsorbed on the moisture desorption layer is reduced. Will be withdrawn. For this reason, the moisture desorption layer is refreshed, and moisture can be newly adsorbed. Therefore, the hygroscopic action of the hygroscopic material can be prolonged by using the high temperature and low temperature in the test chamber. Examples of the hygroscopic material include silica gel, zeolite, molecular sieve, and activated alumina.

  As described above, according to the present invention, the pressure fluctuation in the heat insulation panel can be reduced, so that the condensation in the heat insulation panel can be suppressed, thereby deteriorating the heat insulation performance of the heat insulation panel. The occurrence of water leakage can be suppressed.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the environmental test apparatus 10 according to this embodiment includes a test chamber 12 that can store a sample W, and can apply a thermal load to the sample W stored in the test chamber 12. Is. In other words, this environmental test apparatus 10 is a thermal shock test apparatus that applies a thermal stress to the sample W by alternately exposing the sample W to a low temperature and a high temperature, or continuously exposes the sample W to an atmosphere of a predetermined condition and applies a thermal load to the sample W. It is configured as a constant temperature bath or a constant temperature and humidity chamber. Examples of the sample W include a printed board on which a semiconductor chip is mounted.

  The environmental test apparatus 10 includes a heating chamber 14, a cooling chamber 16, a wall 18 that defines the test chamber 12, and an open / close door 22 attached to the wall 18. The heating chamber 14 is a room for heating the air that circulates between the test chamber 12 and is used for raising the temperature in the test chamber 12. A heater 24 and a blower 26 are disposed in the heating chamber 14. The cooling chamber 16 is a room for cooling the air circulating between the test chamber 12 and is used for lowering the temperature in the test chamber 12. In the cooling chamber 16, a cooler 28, a blower 30, and an auxiliary heater 32 are disposed. The auxiliary heater 32 is driven when the air supplied to the test chamber 12 becomes lower than the target temperature.

  The high-temperature side partition wall 35 between the test chamber 12 and the heating chamber 14 is provided with a suction port 35a and a blow-out port 35b, and an open / close damper 35c is provided in each of the suction port 35a and the blow-out port 35b. ing. The suction port 35 a is an opening for introducing the air in the test chamber 12 into the heating chamber 14. The outlet 35 b is an opening through which high-temperature air heated in the heating chamber 14 flows into the test chamber 12. The open / close damper 35c opens the suction port 35a and the blowout port 35b when the temperature inside the test chamber 12 is raised, and closes the suction port 35a and the blowout port 35b when the temperature inside the test chamber 12 is lowered.

  The low-temperature side partition wall 36 between the test chamber 12 and the cooling chamber 16 is provided with a suction port 36a and a blow-out port 36b, and an open / close damper 36c is disposed in each of the suction port 36a and the blow-out port 36b. ing. The suction port 36 a is an opening for introducing the air in the test chamber 12 into the cooling chamber 16. The outlet 36 b is an opening through which low-temperature air cooled in the cooling chamber 16 flows into the test chamber 12. The open / close damper 36c opens the inlet 36a and the outlet 36b when the temperature in the test chamber 12 is lowered, and closes the inlet 36a and the outlet 36b when the temperature in the test chamber 12 is increased.

  The wall body 18 is composed of a wall body 20 constituting the test chamber 12, a wall body 19 constituting the heating chamber 14, and a wall body 21 constituting the cooling chamber 16. In either case, as shown in FIG. The heat insulating panel 40 includes a hollow main body 40a having a configuration in which a plurality of panel members 42 are assembled, and a heat insulating material 40b provided inside the main body 40a. The panel material 42 is made of, for example, a sheet metal such as a stainless steel plate, and the main body portion 40a of the heat insulating panel 40 is formed into a hollow shape by joining edges of the panel material 42 that is bent or a flat panel material 42, for example. Is formed. Specifically, for the panel material 42 on the outdoor side, the edge of the panel material 42 is bent, and the bent edges are overlapped and welded to form a joint 42a. The welding here may be spot welding, for example. A sealing material 45 is applied to the joint portion 42a between the panel members 42 so that external air does not enter the main body portion 40a through the joint portion 42a as much as possible. On the other hand, with respect to the panel material 42 on the indoor side, the edges are bent and the bent edges are overlapped and welded. The welding at this weld 42c can be, for example, argon welding. All-around seal is made by argon welding. The heat insulating material 40b is a fibrous heat insulating material 40b such as glass wool. Since the panel material is made of metal such as sheet metal, the heat in the room is easily transmitted through the panel material 42, and the air in the main body 40 a is easily expanded and contracted due to the influence. In addition, you may comprise the heat insulating material 40b of the heat insulation panel 40 which comprises the cooling chamber 16 with resin which has open cells, such as a urethane foaming agent.

  The opening / closing door 22 is provided so as to be able to open / close a sample W entrance / exit provided in the wall body 20 constituting the test chamber 12. The opening / closing door 22 also has a heat insulating property like the wall body 20. That is, the open / close door 22 has a configuration in which a plurality of panel members 44 are assembled in a hollow shape and a heat insulating material 22a is disposed therein. The heat insulating material 22a is a fibrous heat insulating material 22a such as glass wool.

  The wall body 20 constituting the test chamber 12 is provided with a communication hole 42b in the panel member 42 constituting the outer wall 20a. The communication hole 42b allows the internal space ST of the wall body 20 to communicate with the outside of the wall body. Further, the wall body 20 is provided with a pressure adjusting unit 50 for relaxing the pressure change in the internal space ST.

  In this embodiment, the pressure adjustment part 50 is comprised by the deformable bag 50a comprised with soft materials, such as polyethylene and a vinyl resin. The bag body 50a is formed in a shape that is long in the vertical direction, and is disposed in the internal space ST along the inner surface of the panel member 42 that constitutes the outer wall 20a. In this state, the bag body 50a is in contact with the heat insulating material 40b.

  The mouth of the bag body 50 a is attached to the panel member 42 in an airtight manner so as to surround the communication hole 42 b of the wall body 20. Therefore, the internal space ST of the wall 20 of the test chamber 12 is partitioned into a buffer chamber SB formed by the inner space of the bag body 50a and a heat insulating chamber SI that is an outer space of the bag body 50a. And the heat insulating material 40b is arrange | positioned in this heat insulation room SI. Since the communication hole 42b is located at the lowermost part of the bag body 50a, when the inside of the bag body 50a is condensed, the condensed water can be discharged to the outside through the communication hole 42b.

  The operation of the environmental test apparatus 10 configured as described above will be described. The operation described below is an operation for performing a thermal shock test in which the sample W in the test chamber 12 is alternately and repeatedly exposed to a high temperature atmosphere and a low temperature atmosphere.

  When the sample W is set in the test chamber 12 and exposed to a high temperature atmosphere, the inlet 35a and the outlet 35b of the high temperature side partition wall 35 are opened, while the inlet 36a and the outlet 36b of the low temperature side partition wall 36 are opened. close. Then, the heater 24 and the blower 26 are driven to heat the air in the heating chamber 14 and circulate the air heated to this high temperature between the heating chamber 14 and the test chamber 12. As a result, the inside of the test chamber 12 is heated to a predetermined temperature, maintained at this predetermined temperature for a certain period of time, and the sample W is exposed to a high temperature.

  During this high temperature exposure, the inner wall 20b of the wall body 20 constituting the test chamber 12 is heated by the high temperature air, and the heat is transferred to the heat insulation chamber SI in the wall body 20 (heat insulation panel 40). Along with this, the air in the heat insulating chamber SI rises in temperature and expands, but the bag body 50a is compressed in accordance with the pressure change. That is, the bag body 50a is disposed so as to sandwich the heat insulating material 40b between the inner wall 20b and the inner space (buffer chamber SB) of the bag body 50a communicates with the outside through the communication hole 42b. When a force is applied from the outside, the air in the inner space SB is discharged to the outside through the communication hole 42b, and the bag body 50a contracts. Thereby, the pressure rise in the wall 20 is relieved. As a result, the air in the heat insulation chamber SI is prevented from leaking outside through the joint portion 42a between the panel members 42.

  When a certain time has elapsed, the suction port 35a and the blowout port 35b of the high temperature side partition wall 35 are closed, while the suction port 36a and the blowout port 36b of the low temperature side partition wall 36 are opened. Then, the cooler 28 and the blower 30 are driven to cool the air by the cooler 28 and to circulate the air cooled to the low temperature between the cooling chamber 16 and the test chamber 12. As a result, the inside of the test chamber 12 is lowered to a predetermined temperature, and is maintained at the predetermined temperature for a predetermined time, so that the sample W is exposed to low temperature. Thereafter, thermal stress can be applied to the sample W by alternately repeating high temperature exposure and low temperature exposure.

  During the low temperature exposure, the inner wall 20b of the wall body 20 is cooled by the low temperature air, the heat is transferred to the heat insulating chamber SI in the wall body 20 (heat insulating panel 40), and the air in the heat insulating chamber SI is cooled. Shrink. Accordingly, a differential pressure between the pressure in the heat insulation chamber SI and the external air pressure is generated, whereby the bag body 50a expands while sucking in the outside air, and the volume of the buffer chamber SB expands. The decline is alleviated. For this reason, it is suppressed that outside air flows in into the wall body 20 through the junction part 42a of the panel materials 42 of the outdoor side.

  As described above, in the present embodiment, when the air in the heat insulation chamber SI becomes hot and expands, the pressure adjustment unit 50 functions so that the volume in the buffer chamber SB decreases accordingly. At this time, the air in the buffer chamber SB is released to the outside of the heat insulation panel 40 through the communication hole 42b according to the degree of expansion of the air in the heat insulation chamber SI. That is, the volume occupied by the buffer chamber SB in the heat insulating panel 40 is reduced and the volume occupied by the heat insulating chamber SI is increased. Therefore, even when the temperature in the heat insulating chamber SI rises, the pressure fluctuation in the heat insulating chamber SI can be reduced. On the other hand, when the air in the heat insulation chamber SI becomes low temperature and contracts, the pressure adjusting unit 50 functions so that the volume in the buffer chamber SB increases accordingly. That is, air (outside air) outside the heat insulation panel flows into the buffer chamber SB through the communication hole 42b according to the degree of contraction of the air in the heat insulation chamber SI. At this time, the outside air is apparently flowing into the heat insulating panel 40, but since the heat insulating chamber SI is partitioned from the buffer chamber SB in an airtight manner, the outside air does not enter the heat insulating chamber SI. As a result, the volume occupied by the buffer chamber SB in the heat insulating panel 40 increases and the volume occupied by the heat insulating chamber SI decreases. For this reason, even when the temperature in the heat insulation chamber SI falls, the pressure change in the heat insulation chamber SI can be relieved. Therefore, in this heat insulation panel 40, since it can suppress that external air penetrate | invades in heat insulation room SI through the junction part 42a of the panel materials 42 which comprise the main-body part 40a, it suppresses dew condensation in the heat insulation room SI. It is possible to suppress wetting of the heat insulating material 40b and accumulation of moisture. Thereby, deterioration of heat insulation performance and generation | occurrence | production of water leakage can be suppressed.

  Moreover, in this embodiment, since the pressure adjustment part 50 is comprised by the deformable bag 50a, the bag 50a deform | transforms easily following the pressure change in the main-body part 40a. That is, when the pressure in the heat insulation chamber SI rises, a pressure difference is generated between the buffer chamber SB and the bag body 50a is deformed by the differential pressure so as to reduce the volume of the buffer chamber SB. When the pressure decreases, the bag body 50a is deformed so that the volume of the buffer chamber SB increases due to the differential pressure with the buffer chamber SB. Therefore, even when the amount of temperature change in the heat insulation chamber SI is small, the pressure fluctuation in the heat insulation chamber SI can be suppressed.

  Furthermore, in this embodiment, since the bag body 50a is disposed in the internal space ST in a state of being in contact with the heat insulating material 40b, the bag body 50a can be pressed by the restoring force of the heat insulating material 40b in a low temperature atmosphere. . That is, the air in the buffer chamber SB can be pushed out using the restoring force of the heat insulating material 40b.

  In the present embodiment, the bag body 50 a has a shape that is long in the vertical direction, is disposed along the inner surface of the outer wall 20 a of the wall body 20, and is disposed along the longitudinal direction of the heat insulating panel 40. For this reason, since the thickness of the heat insulating material 40b can be made substantially uniform in the longitudinal direction (vertical direction) of the heat insulating panel 40, the bias of the heat insulating performance of the heat insulating panel 40 can be prevented.

  In the present embodiment, since the communication hole 42b is positioned at the lowermost part of the bag body 50a, the dew condensation water in the buffer chamber SB can be drained through the communication hole 42b.

  Note that the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made without departing from the spirit of the present invention. For example, in the embodiment, the internal space S of the wall body 18 includes the internal space SH of the wall body 19 constituting the heating chamber 14, the internal space ST of the wall body 20 constituting the test chamber 12, and the cooling chamber 16. Although shown about the structure partitioned off into the interior space SL of the wall 21 to comprise, it is not restricted to this structure. That is, the internal space S of the wall body 18 includes the internal space SH of the wall body 19 constituting the heating chamber 14, the internal space ST of the wall body 20 constituting the test chamber 12, and the wall body 21 constituting the cooling chamber 16. The structure formed as one space over the internal space SL may be used. In this case, the pressure adjusting unit 50 is not limited to the internal space ST of the wall body 20 of the test chamber 12, but the internal space SH of the wall body 19 constituting the heating chamber 14 and the internal space of the wall body 21 constituting the cooling chamber 16. You may make it provide in the range over SL. Then, the buffer chamber SB as large as possible can be obtained.

  Moreover, you may arrange | position so that the bag body 50a may be folded in the right and left over the left and right side walls which comprise the test chamber 12. FIG.

  Further, as shown in FIG. 3A, when the wall body 20 constituting the test chamber 12 has a through portion 20c penetrating in the thickness direction, the bag body 50a is shown in FIG. Thus, the through hole 50b may be provided. The through hole 50b has a size that allows the through portion 20c of the wall body 20 to be inserted, and the peripheral edge thereof is sealed. Therefore, even if the through hole 50b is provided in the bag body 50a, the air in the bag body 50a (in the buffer chamber SB) does not flow into the heat insulating chamber SI. In this aspect, it is possible to wire a cable or the like through the through portion 20c of the wall body 20 (the heat insulating panel 40) while ensuring the prevention of the outside air from entering the heat insulating chamber SI.

  Moreover, since the lower end part of the bag body 50a is inclined and the lowermost part is connected to the communication hole 42b, the dew condensation water in the bag body 50a can be reliably discharged. In addition, although the bag body 50a is shown in FIGS. 3A and 3B, an embodiment using a film body 50c as described later is also possible.

In the said embodiment, it was set as the structure arrange | positioned in the interior space ST of the wall 20 in the state in which the bag body 50a contact | connected the heat insulating material 40b, However, instead of this, as shown in FIG. It is good also as a structure by which the bag body 50a is arrange | positioned in the state partitioned off by the board 55 and not contacting the heat insulating material 40b directly. That is, the heat insulating chamber SI is provided with the first chamber SI _{1 in} which the heat insulating material 40b is disposed and the bag body 50a without the heat insulating material 40b by the partition plate 55 having the through hole 55a. It is partitioned into a second chamber SI _2. It is preferable that a large number of through-holes 55a are provided, and for example, a mesh plate or the like can be used. Second chamber SI ₂ is bag 50a has a volume that can be inflated in accordance with the contraction of the air in the heat insulating chamber SI. In this aspect, even when the pressure adjusting unit 50 functions so that the air in the heat insulating chamber SI contracts and the volume in the buffer chamber SB increases, the bag body 50a is made to have the force of the heat insulating material 40b due to the presence of the partition plate 55. Since (restoring force) is not directly received, it is possible to easily follow the pressure change in the heat insulating chamber SI.

Moreover, as shown in FIG. 5, the pressure adjustment part 50 may be comprised by the deformable film body 50c. The peripheral edge of the film body 50c is connected to the inner surface of the panel member 42 constituting the outer wall 20a of the wall body 20 in an airtight manner. The communication hole 42b is disposed in the panel member 42 so as to be surrounded by the connection portion of the film body 50c. Thus, the second chamber SI ₂ is divided into a buffer chamber SB and the heat insulating chamber SI (part of). In this aspect, since the film body 50c deforms easily following the pressure change in the main body 40a, the pressure fluctuation in the heat insulation chamber SI is suppressed even when the temperature change amount in the heat insulation chamber SI is small. Can do.

  There may be one communication hole 42b, or a plurality of communication holes 42b. In the case of the film body 50c, unlike the bag body 50a, many communication holes 42b can be provided. Since the film body 50c is freely deformable, if a large number of communication holes 42b are provided, there is no concern that the communication holes 42b are blocked by the film body 50c and the air flow is obstructed.

  In addition, as shown in FIG. 6, a blower 57 capable of blowing air toward the buffer chamber SB may be provided, and a communication hole 42 b may be formed by the blower passage of the blower 57. In this aspect, since the inside of the buffer chamber SB communicates with the outside of the wall body 20 through the air passage of the blower 57, air is passed between the buffer chamber SB and the outside through the air passage when the blower 57 is not driven. Circulate at. When the air in the heat insulating chamber SI contracts, the air is forced to flow into the buffer chamber SB by the blower 57 and pressure is applied to increase the volume in the buffer chamber SB. Thereby, the pressure in the heat insulation chamber SI is slightly higher than the outside air, and it is possible to make it difficult for air to enter the heat insulation chamber SI from the joint 42a or the like. Although FIG. 6 shows the case of using the film body 50c, the blower 57 can be provided even in the case of using the bag body 50a.

  Further, as shown in FIG. 7, a moisture desorbing layer 59 composed of a hygroscopic material such as silica gel, zeolite, molecular sieve, activated alumina or the like is provided on the panel material 42 which becomes the inner wall 20 b of the wall body 20. Also good. In this aspect, when condensation occurs in the heat insulation chamber SI, moisture is adsorbed by the moisture desorption layer 59 at a low temperature, while when the test chamber 12 is in a high temperature atmosphere, moisture adsorbed in the moisture desorption layer 59 is absorbed. Will be withdrawn. For this reason, the moisture desorption layer 59 is refreshed, and moisture can be newly adsorbed. Therefore, the hygroscopic action of the hygroscopic material can be prolonged by using the high temperature and low temperature in the test chamber 12, thereby further suppressing the accumulation of moisture in the heat insulating chamber SI. Although FIG. 7 shows the case using the bag body 50a, the present invention can also be applied to the case using the film body 50c.

  Moreover, in the said embodiment, although it was set as 3 zone structure by which the indoor space divided by the wall 18 was divided into three spaces (the test chamber 12, the heating chamber 14, and the cooling chamber 16) by the heat insulation walls 35 and 36, It is not limited to this. For example, as shown in FIG. 8, it is good also as the environmental test apparatus 70 of the 1 tank structure where the indoor space divided by the wall 18 is not partitioned off with the heat insulation wall. In this environmental test apparatus 70, the indoor space is configured as the test chamber 12, and the test chamber 12 is configured to heat or heat the sample chamber 12 a in which the sample W is set and the air in the test chamber 12 by the partition plate 72. It is partitioned into an air conditioning chamber 12b to be cooled. The partition plate 72 is provided with a communication hole that allows the sample chamber 12a and the air conditioning chamber 12b to communicate with each other. A blower 26, a heater 24, a cooler 28, and the like are disposed in the air conditioning chamber 12b. By driving the blower 26, air circulates between the sample chamber 12a and the air conditioning chamber 12b. By driving the heater 24, the air in the test chamber 12 is heated while the cooler 28 is driven. By doing so, the air in the test chamber 12 is cooled. The bag body 50a is disposed inside the wall body 18 constituting the test chamber 12 (indoor space). Also in this environmental test apparatus 70, a differential pressure between the pressure in the heat insulation chamber SI and the pressure in the buffer chamber SB is generated by the temperature increase or decrease in the heat insulation chamber SI accompanying the heating or cooling of the air in the test chamber 12. Thus, the bag body 50a contracts or expands. Therefore, similarly to the environment test apparatus 10 having a three-zone configuration, it is possible to suppress the deterioration of the heat insulation performance and the occurrence of water leakage. It should be noted that the above-described various forms can also be employed in the one-tank structure environmental test apparatus 70.

It is sectional drawing which shows roughly the whole structure of the environmental test apparatus which concerns on embodiment of this invention. It is sectional drawing which shows a part of wall body of the said environmental test apparatus roughly. (A) It is sectional drawing which shows a part of environmental test apparatus in case a penetration part is provided in a wall body, (b) It is a schematic front view of the bag provided in this environmental test apparatus. It is sectional drawing which shows roughly a part of environmental test apparatus of the aspect with which the interior space of a wall body is partitioned off with a partition plate. It is sectional drawing which shows roughly a part of environmental test apparatus of the aspect with which a pressure adjustment part is comprised with a film | membrane body. It is sectional drawing which shows schematically a part of environmental test apparatus of the aspect provided with the blower. It is sectional drawing which shows roughly a part of environmental test apparatus of the aspect provided with the moisture desorption layer. It is sectional drawing which shows schematically the environmental test apparatus of the aspect of one tank structure.

Explanation of symbols

SB buffer room SI heat insulation room W sample 10 environmental test apparatus 12 test room 18 wall body 19 wall body 20 wall body 20a outer wall 20b inner wall 20c penetration part 21 wall body 40 heat insulation panel 40a main body part 40b heat insulation material 42 panel material 42b communication hole 44 Panel material 50 Pressure adjusting portion 50a Bag body 50b Through hole 50c Film body 55 Partition plate 55a Through hole 57 Blower 59 Moisture desorption layer

Claims (12)

A heat-insulating panel comprising a hollow main body having a structure in which a plurality of panel members are assembled, and a heat insulating material provided inside the main body,
The body portion is provided with a communication hole,
The inside of the main body is partitioned into a heat insulating chamber in which the heat insulating material is disposed and a buffer chamber communicating with the outside through the communication hole, and the volume of the buffer chamber is changed according to a pressure change in the heat insulating chamber. A heat insulating panel that includes a pressure adjustment unit that relieves pressure changes in the room.   The said pressure adjustment part is a heat insulation panel of Claim 1 comprised by the deformable bag body.   The heat insulation panel according to claim 1, wherein the pressure adjusting unit is configured by a deformable film body. A penetration part that penetrates the heat insulation panel in the thickness direction is provided,
The heat insulation panel according to claim 2 or 3, wherein the bag body or the film body is provided with a through hole that is disposed so as to be inserted through the through portion and whose peripheral edge is sealed.   The heat insulation panel according to claim 3 provided with many said communicating holes.   The said pressure adjustment part is a heat insulation panel of any one of Claim 1 to 5 arrange | positioned in the state which contact | connected the said heat insulating material. In the heat insulation chamber, a partition plate having a through hole is disposed,
The said heat insulation chamber is divided into the 1st chamber in which the said heat insulating material was arrange | positioned, and the 2nd chamber in which the said pressure regulation part was arrange | positioned without the said heat insulating material being arrange | positioned. The heat insulation panel of any one of these.   The heat insulation panel according to any one of claims 1 to 7, wherein the buffer chamber is formed in a shape that is long in a vertical direction, and is disposed along an inner surface of a side wall of the main body.   The heat insulation panel according to claim 8, wherein the communication hole is located at a lowermost portion of the pressure adjusting unit.   The heat insulation panel according to any one of claims 1 to 9, further comprising a blower capable of blowing air toward the buffer chamber, wherein the communication hole is formed by a blower passage of the blower. An environmental test apparatus capable of applying a heat load to a sample in the test room by changing the temperature in the test room,
A wall comprising the heat insulating panel according to any one of claims 1 to 10,
The environmental test apparatus arrange | positioned so that the buffer chamber of the said heat insulation panel may be located in the outer wall side of the said wall body with respect to a heat insulation chamber.   The environmental test apparatus according to claim 11, wherein a moisture desorbing layer made of a hygroscopic material is provided on at least a part of the panel material of the heat insulation panel that becomes an inner wall of the test chamber.

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