JP2009300358A - Heat accumulator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat accumulator making an exchange heat quantity variable, and an environmental testing device capable of preventing an excessive load from being applied to a heater and a cooler. <P>SOLUTION: A driving shaft 54 is attached to a heat accumulating plate 51 positioned in one end out of the heat accumulating plates 51-53 opposedly arranged to each other. The driving shaft 54 is movable along an opposed direction of the heat accumulating plates 51-53. The fellow heat accumulating plates 51, 52 opposed each other are connected by a stopper 55, and the fellow heat accumulating plates 52, 53 are connected by a stopper 56. The heat accumulating plates 51-53 can take a separate state (Fig.2(a)) opposed with a prescribed space, and a contact state (Fig.2(b)) with fellow opposed faces contacting each other, by driving the driving shaft 54. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a regenerator that stores hot or cold energy.

  As one of environmental test apparatuses, a thermal shock test apparatus is known that tests characteristics of a test object against a thermal shock by applying a rapid temperature change to the test object such as an electric / electronic component (for example, Patent Document 1). Such a test apparatus has a test room and a high temperature room and a low temperature room respectively disposed above and below the test room. Then, with the test object stored in the test chamber, open the damper between the high temperature chamber and the test chamber, expose the test object to high temperature air for a predetermined time, and between the low temperature chamber and the test chamber. The low temperature exposure in which the damper is opened and the test object is exposed to the low temperature air for a predetermined time is alternately repeated a predetermined number of times.

Each of the high temperature chamber and the low temperature chamber of the test apparatus of Patent Document 1 is provided with a heat accumulator. High-temperature greenhouse heat accumulators store heat while low-temperature exposure is being performed, and release heat when switching to high-temperature exposure. On the other hand, the regenerator in the low-temperature chamber stores cold heat while high-temperature exposure is performed, and radiates the cold heat when switched to low-temperature exposure. Thereby, in the test apparatus, the temperature recovery time when switching from high temperature exposure to low temperature exposure or switching from low temperature exposure to high temperature exposure can be shortened.
JP 2001-83058 A

  From the viewpoint of shortening the temperature recovery time, the regenerator provided in the cold shock test apparatus as described above preferably has a large exchange heat amount. On the other hand, a heat accumulator having a large exchange heat amount gives an excessive load to a heater that generates high-temperature air in a high-temperature chamber and a cooler that generates low-temperature air in a low-temperature chamber except when the temperature is restored.

  Accordingly, one object of the present invention is to provide a heat accumulator that can change the amount of heat exchanged. Another object of the present invention is to provide an environmental test apparatus that can prevent an excessive load from being applied to a heater or a cooler.

  The heat storage device of the present invention stores hot or cold heat, and a plurality of heat storage plates arranged to face each other and at least one of the plurality of heat storage plates are opposed to the heat storage plate. A moving mechanism that moves the heat storage plate toward and away from the heat storage plate, and the heat storage plate is moved by the movement mechanism so that the plurality of heat storage plates are separated from each other at a predetermined interval. A separated state and a proximity state in which the interval between at least one of the plurality of heat storage plates and the heat storage plate facing the heat storage plate is narrower than the predetermined interval may be adopted.

  In the present invention, the “proximity state narrower than the predetermined interval” includes a case where opposing heat storage plates are in contact with each other.

  According to the above-described configuration, by reducing the interval between the heat storage plates, the air flow between the heat storage plates is hindered, and the heat exchange capacity of the heat storage device is reduced. Further, when the heat storage plates are in contact with each other, the heat transfer area, which is an area that contacts the outside air of the heat storage plates, is reduced. Therefore, the amount of exchange heat proportional to the heat transfer area is reduced. Therefore, it becomes possible to change the amount of exchange heat.

  The heat storage device of the present invention preferably further includes a connecting member that connects the two heat storage plates facing each other. According to this configuration, when the heat storage plate is moved away from the opposing heat storage plate, the connecting member functions as a stopper. Moreover, a several thermal storage board can be moved with respect to the opposing thermal storage board only by moving the thermal storage board located in an end with a moving mechanism. That is, it is not necessary to provide a moving mechanism for the plurality of heat storage plates.

  In the heat storage device of the present invention, it is preferable that the moving mechanism moves the heat storage plate so that an angle formed by the two heat storage plates facing each other changes. According to this configuration, when the heat storage plates are brought into contact with each other, they are not in contact with each other. Therefore, it is possible to prevent the heat storage plates from freezing and becoming separated.

  In the heat storage device of the present invention, the plurality of heat storage plates are three or more, and a pair of springs and a repulsive force are generated between at least one of the plurality of heat storage plates and the heat storage plate facing the heat storage plates. Any of these magnets may be arranged. According to this configuration, for example, when the space between the heat storage plates is narrowed by applying an equal force to each heat storage plate, first, the space between the heat storage plates where no springs or magnets are arranged is narrowed, and then The space | interval of the thermal storage plates with which a spring and a magnet are arrange | positioned becomes narrow. Therefore, the amount of exchange heat can be changed in stages.

  The heat storage device of the present invention may further include a guide for guiding the heat storage plate in a moving direction by the moving mechanism. According to this configuration, the heat storage plate can be moved smoothly.

  The environmental test apparatus of the present invention is an environmental test apparatus having a heater that generates high-temperature air or a cooler that generates low-temperature air, and further includes the above-described heat accumulator.

  According to this configuration, the exchange heat quantity of the heat accumulator arranged in the test apparatus can be changed. Therefore, it is possible to prevent an excessive load from being applied to the heater and the cooler disposed in the test apparatus.

  In the environmental test apparatus of the present invention, it is preferable that the heat accumulator is brought into a proximity state corresponding to a predetermined heat exchange amount before starting the test. According to this configuration, it is possible to reliably prevent an excessive load from being applied to the heater and the cooler.

  In the environmental test apparatus of this invention, it is preferable to make the said thermal storage device into the said separation state at the time of a test start, and to make it into the said proximity state after that. Overshoot occurs when the amount of heat exchanged by the regenerator is large with respect to the temperature difference before and after the temperature change. According to the above-described configuration, the occurrence of overshoot can be prevented. Moreover, it can prevent that an excessive load is added to a heater and a cooler by making the exchange heat quantity of a thermal storage device small.

  The “test start” in the present invention may be during a temperature change period until the test condition is reached, or may be when the test condition is reached.

  According to another aspect, the environmental test apparatus of the present invention is a test chamber and a preparation chamber that can communicate with the test chamber, and includes a heater that generates high-temperature air or a cooler that generates low-temperature air. An environmental test apparatus including at least one preparation room, wherein the above-described heat accumulator is disposed in at least one of the preparation rooms.

  According to this configuration, the exchange heat amount of the heat accumulator arranged in the preparation room can be changed. Therefore, it is possible to prevent an excessive load from being applied to the heater and the cooler disposed in the preparation chamber.

  In the environmental test apparatus of the present invention, when the test chamber and the preparation chamber where the heat accumulator is arranged are not in communication, the heat accumulator arranged in the preparation chamber corresponds to a predetermined heat exchange amount. It is preferable to be in the proximity state. According to this configuration, it is possible to reliably prevent an excessive load from being applied to the heater and the cooler.

  In the environmental test apparatus according to the present invention, when the test chamber and the preparation chamber in which the heat accumulator is disposed are communicated and air is supplied to the test chamber to supply the air in the preparation chamber, the preparation chamber is initially set. It is preferable that the heat accumulator arranged in is placed in the separated state and then brought into the proximity state. According to this configuration, the occurrence of overshoot can be prevented. Moreover, it can prevent that an excessive load is added to a heater and a cooler by making the exchange heat quantity of a thermal storage device small.

  As described above, the heat accumulator of the present invention can increase or decrease the heat transfer area and the heat exchange capacity, which are areas in contact with the outside air of the heat storage plate, by moving the heat storage plate. Therefore, it becomes possible to change the amount of exchange heat. Moreover, the environmental test apparatus of the present invention can change the exchange heat amount of the heat accumulator arranged in the preparation room. Therefore, it is possible to prevent an excessive load from being applied to the heater and the cooler disposed in the preparation chamber.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic side view showing an overall configuration of a thermal shock test apparatus including a heat accumulator according to an embodiment of the present invention. As shown in FIG. 1, the thermal shock test apparatus 1 of this Embodiment is provided with the housing | casing 10 which has heat insulation. The interior of the housing 10 is located in the test chamber 2 in which the test object is stored, the high temperature chamber 3 in which the high temperature air is generated above the test chamber 2, and the low temperature in the test chamber 2. It is divided into three spaces of the low temperature chamber 4 where air is generated.

  In addition, air flow holes 11 and 12 are formed in the partition wall that separates the test chamber 2 and the high temperature chamber 3, and air flow holes 13 and 14 are formed in the wall that separates the test chamber 2 and the low temperature chamber 4, respectively. Yes. The air circulation holes 11 to 14 are provided with dampers 11a to 14a for switching between a state of opening and sealing the air circulation holes 11 to 14, respectively.

  When performing high-temperature exposure in which the test object stored in the test chamber 2 is exposed to high-temperature air, the dampers 11a and 12a are opened and the dampers 13a and 14a are closed. At this time, hot air in the high temperature chamber 3 is sent out from the air circulation hole 11 to the test chamber 2, and air in the test chamber 2 is sucked into the high temperature chamber 3 from the air circulation hole 12. On the other hand, when performing the low temperature exposure which exposes the test object accommodated in the test chamber 2 to low temperature air, the dampers 11a and 12a are closed and the dampers 13a and 14a are opened. At this time, the low temperature air in the low temperature chamber 4 is sent out from the air circulation hole 13 to the test chamber 2, and the air in the test chamber 2 is sucked into the low temperature chamber 4 from the air circulation hole 14.

  The high greenhouse 3 is provided with a heater 31 that generates high-temperature air, and a stirring fan 32 that is rotationally driven by a motor installed outside the housing 10. The low temperature chamber 4 is provided with a cooler 41 that generates low temperature air, a stirring fan 42 that is rotationally driven by a motor installed outside the housing 10, and a regenerator 50 that stores cold heat. Yes.

  Here, the configuration of the heat accumulator 50 will be described with reference to FIG. As shown in FIG. 2, the heat accumulator 50 mainly includes three heat storage plates 51 to 53. The heat storage plates 51 to 53 are arranged so that the heat storage plates facing each other in this order are parallel to each other. In the following description, the facing direction of the heat storage plates 51 to 53 (the direction from the diagonally upper right to the diagonally lower left in FIG. 2) is simply referred to as “opposing direction”. And the drive shaft 54 which can move along an opposing direction is attached to the heat storage board 51 located in one end (left end in FIG. 2) among the heat storage boards 51-53.

  A pair of guides 57 are provided below the heat storage plates 51 to 53 so as to extend in the opposite direction and support the heat storage plates 51 and 52 in a slidable manner. Therefore, the heat storage plates 51 and 52 can be translated in the opposing direction along the guide 57. That is, the heat storage plates 51 and 52 can move while keeping the heat storage plates facing each other in parallel.

  Furthermore, projections 51 a and 52 a are formed at the same height on the side surfaces of the heat storage plates 51 and 52. A stopper 55 having an elliptical opening is fitted in the protrusions 51a and 52a. Similarly, projections 52b and 53a are formed at the same height position on the side surfaces of the heat storage plates 52 and 53, and a stopper 56 is fitted to these projections 52b and 53a. The tips of the protrusions 51a, 52a, 52b, 53a are thick so that the stoppers 55, 56 that are fitted cannot be removed. That is, the heat storage plates 51 and 52 facing each other are connected by the stopper 55, and the heat storage plates 52 and 53 are connected by the stopper 56.

  With the configuration as described above, the three heat storage plates 51 to 53 of the heat accumulator 50 are separated from each other at a predetermined interval as shown in FIG. 2A and in FIG. As shown, a contact state where the opposing surfaces are in contact with each other may be employed.

  Specifically, when the heat storage plates 51 to 53 are in contact with each other, the drive shaft 54 attached to the heat storage plate 51 is moved to the side opposite to the heat storage plate 53 in the opposing direction (left diagonally lower side in FIG. 2). Then, the heat storage plate 51 moves along the guide 57 to the side opposite to the heat storage plate 53. When the distance between the heat storage plate 51 and the heat storage plate 52 becomes equal to the length of the opening of the stopper 55, the heat storage plate 52 is also moved along the guide 57 to the opposite side of the heat storage plate 53. When the distance between the heat storage plate 52 and the heat storage plate 53 becomes equal to the length of the opening of the stopper 56, the movement of the heat storage plates 51 and 52 is stopped by the stoppers 55 and 56. Thereby, the thermal storage plates 51-53 will be in a separated state.

  In addition, when the heat storage plates 51 to 53 are in the separated state, when the drive shaft 54 attached to the heat storage plate 51 is moved to the heat storage plate 53 side (upper right side in FIG. 2) in the opposite direction, the heat storage plate 51 is guided. It moves along the heat storage plate 53 side along 57. When the heat storage plate 51 and the heat storage plate 52 come into contact with each other, the heat storage plate 51 is pushed to move the heat storage plate 52 along the guide 57 toward the heat storage plate 53. The heat storage plates 51 and 52 move until the heat storage plate 52 contacts the heat storage plate 53 and the heat storage plates 51 to 53 are in contact.

  As shown in FIG. 2A, the heat accumulator 50 is between the entire surface of the heat accumulator plates 51 to 53 and the atmosphere in the low temperature chamber 4 when the heat accumulator plates 51 to 53 are in a separated state. Heat exchange takes place. That is, the area of the entire surface of the heat storage plates 51 to 53 is the heat transfer area. Moreover, as shown in FIG.2 (b), when the thermal storage plates 51-53 are in a contact state, the exposed surface which is not in contact with the other plates of the thermal storage plates 51-53 and the inside of the low temperature chamber 4 Heat exchange is performed with the atmosphere. That is, the area of the exposed surface of the heat storage plates 51 to 53 is the heat transfer area. Here, the exchange heat quantity of the heat accumulator 50 is proportional to the heat transfer area of the heat storage plates 51 to 53. Therefore, in the heat accumulator 50, when the heat storage plates 51 to 53 are in a contact state, the exchange heat amount is smaller than that in the separation state.

  Even if the heat storage plates 51 to 53 are not in contact with each other, when these pitches are narrowed, the flow of wind between the plates is deteriorated, so that the heat exchange capability is reduced. Therefore, the heat exchange capability can be reduced by narrowing the pitch of the heat storage plates 51 to 53 from the separated state shown in FIG. In this case, it can be prevented that the heat storage plates 51 to 53 come into contact with each other and freeze up.

  Next, an impact test performed in the thermal shock test apparatus 1 will be described with further reference to FIG. FIG. 3 is a diagram illustrating a temperature change in the test chamber when the impact test is performed.

  In the high greenhouse 3, during the time other than the high temperature exposure, a preheating operation is performed by the heater 31 to set the temperature in the high temperature chamber 3 to a preheating temperature higher than the high temperature exposure temperature. Note that such preheating operation does not need to be performed without interruption during periods other than high temperature exposure as long as the temperature in the high temperature chamber 3 can be raised to a predetermined preheating temperature before high temperature exposure is started. At the time of high temperature exposure, the heater 31 is operated and the stirring fan 32 is driven to open the dampers 11a and 12a, and the high temperature air in the high temperature chamber 3 is sent into the test chamber 2. At this time, as shown in FIG. 3, the temperature in the test chamber 2 gradually rises to a predetermined high temperature exposure temperature.

  In the low greenhouse 4, during the period other than the low temperature exposure, a precooling operation is performed by the cooler 41 to set the temperature in the low temperature chamber 4 to a precooling temperature lower than the low temperature exposure temperature. Similar to the preheating operation, the precooling operation does not need to be performed continuously during periods other than low temperature exposure. At this time, the heat storage plates 51 to 53 of the heat storage device 50 are in the contact state shown in FIG. That is, the exchange heat quantity of the heat accumulator 50 is relatively small. Therefore, it is possible to prevent an excessive load from being applied to the cooler 41 by the heat accumulator 50.

  At the time of low temperature exposure, the cooler 41 is operated and the stirring fan 42 is driven to open the dampers 13 a and 14 a, and low temperature air in the low temperature chamber 4 is sent into the test chamber 2. At this time, as shown in FIG. 3, the temperature in the test chamber 2 gradually decreases to a predetermined low temperature exposure temperature. The heat storage plates 51 to 53 of the heat accumulator 50 are in the separated state shown in FIG. 2A from the start of low temperature exposure until the temperature in the test chamber 2 decreases to the low temperature exposure temperature. That is, the exchange heat quantity of the heat accumulator 50 is relatively large. Therefore, the temperature in the test chamber 2 can be rapidly reduced. Moreover, after the temperature in the test chamber 2 becomes the low temperature exposure temperature, the contact state shown in FIG. That is, the exchange heat quantity of the heat accumulator 50 is relatively small. Thereby, the load added to the cooler 41 can be reduced.

  When the difference between the high temperature exposure temperature and the low temperature exposure temperature is relatively small, after the low temperature exposure is started, before the temperature in the test chamber 2 reaches the low temperature exposure temperature, the regenerator 50 in the separated state is installed. A contact state is preferred. Thereby, overshoot can be prevented. Further, from the viewpoint of preventing overshoot, the interval between the heat storage plates 51 to 53 may be reduced stepwise before reaching the low temperature exposure temperature so that the heat storage capacity gradually decreases.

  As shown in FIG. 3, the impact test is performed by alternately repeating the above-described high temperature exposure and low temperature exposure a plurality of times. In FIG. 3, when switching from low temperature exposure to high temperature exposure, the high temperature recovery time, which is the time required for the temperature in the test chamber 2 to rise from the low temperature exposure temperature to the high temperature exposure temperature, is indicated by T1. Yes. Further, when switching from high temperature exposure to low temperature exposure, T2 indicates a low temperature recovery time which is a time required for the temperature in the test chamber 2 to decrease from the high temperature exposure temperature to the low temperature exposure temperature.

  In the present embodiment, when switching from high temperature exposure to low temperature exposure, the amount of exchange heat of the heat accumulator 50 is changed and increased, so that the low temperature recovery time T2 can be shortened. Thereby, a rapid temperature change can be applied to the test object.

  In the present embodiment, the heat accumulator 50 is provided only in the low temperature chamber 4 and the high temperature chamber 3 is not provided with an equivalent to the heat accumulator 50 because the heating power by the heater 31 is sufficiently large. Because. When the heating power by the heater 31 is insufficient, it is preferable to provide the high temperature chamber 3 corresponding to the heat accumulator 50.

  As described above, the regenerator 50 of the present embodiment includes the heat storage plates 51 to 53 arranged so as to face each other. The heat storage plates 51 to 53 are mounted on the heat storage plate 51 and are separated by a predetermined distance from each other by driving a drive shaft 54 that is movable in the opposite direction (FIG. 2A), and the opposing surfaces. The contact state (Fig. 2 (b)) in which can contact can be taken. Therefore, by moving the heat storage plates 51 to 53, the heat transfer area, which is the area in contact with the outside air of the heat storage plates 51 to 53, can be increased or decreased. Therefore, it becomes possible to change the exchange heat amount of the regenerator 50 proportional to the heat transfer area.

  Further, in the heat storage device 50 of the present embodiment, the heat storage plates 51 and 52 facing each other are connected by a stopper 55, and the heat storage plates 52 and 53 are connected by a stopper 56, respectively. Therefore, when the heat storage plates 51 and 52 are moved away from the opposing heat storage plates, the movement of the heat storage plates 51 and 52 can be stopped at a predetermined position by the stoppers 55 and 56. Moreover, the heat storage plates 51 and 52 can be moved in the facing direction only by moving only the heat storage plate 51 located at one end of the heat storage plates 51 to 53 by the drive shaft 54. That is, it is not necessary to provide a moving mechanism for each of the heat storage plates 51 and 52.

  Furthermore, in the heat accumulator 50 of the present embodiment, a guide 57 that extends in the opposite direction and supports the heat storage plates 51 and 52 so as to be slidable is provided below the heat storage plates 51 and 52. Therefore, the heat storage plates 51 and 52 can be moved smoothly.

<Second Embodiment>
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 4 is a view of the heat accumulator according to the present embodiment as viewed from above. The heat accumulator 150 according to the present embodiment is provided in the low temperature chamber 4 of the thermal shock test apparatus 1 and stores cold energy, similarly to the heat accumulator 50 according to the first embodiment described above.

  The main difference between the heat storage device 50 of the first embodiment and the heat storage device 150 of the present embodiment is that the heat storage plates 51 and 52 of the heat storage device 50 are kept parallel to each other. However, in the heat storage device 150 of the present embodiment, the heat storage plates 151 to 153 are rotationally moved so that the angle formed by the heat storage plates facing each other changes.

  As shown in FIG. 4, the heat accumulator 150 of the present embodiment mainly includes four heat storage plates 151 to 154. The heat storage plates 151 to 154 are arranged to face each other in this order. The heat storage plates 151 to 153 are configured to be rotatable about a rotation axis extending in the vertical direction. More specifically, the heat storage plates 151 and 153 can rotate around the rotation shafts 151a and 153a located near the lower end in FIG. On the other hand, the heat storage plate 152 is rotatable around a rotation shaft 152a located near the upper end in FIG. That is, the heat storage plates 151 to 153 are movable so that the angle formed by the two heat storage plates facing each other changes. Further, drive shafts 155, 156, and 157 for rotating the heat storage plates 151 to 153 around the rotation shafts 151a to 153a are attached to the upper surfaces of the heat storage plates 151 to 153, respectively.

  With the above-described configuration, the four heat storage plates 151 to 154 included in the heat storage device 150 are separated from each other at a predetermined interval as shown in FIG. As shown, the heat storage plates 151 and 153 rotate clockwise around the rotation shafts 151a and 153a and the heat storage plate 152 rotates counterclockwise around the rotation shaft 152a from the separated state, and the opposing heat storage plates are partially It is possible to adopt a contact state in contact with.

  As described above, in the present embodiment, it is possible to increase or decrease the heat transfer area, which is an area that touches the outside air of the heat storage plates 151 to 154, substantially as in the first embodiment. Therefore, it is possible to change the exchange heat quantity of the heat accumulator 150.

  Moreover, in this Embodiment, the thermal storage plates 151-153 move so that the angle which the thermal storage plate which mutually opposes changes. Therefore, in the contact state, the heat storage plates 151 to 154 are in partial contact and do not come into contact with each other. Therefore, it can prevent that the thermal storage board freezes and cannot leave | separate.

<Third Embodiment>
Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 5 is a view of the heat accumulator according to the present embodiment as viewed from above. The heat accumulator 250 according to the present embodiment is provided in the low temperature chamber 4 of the thermal shock test apparatus 1 and stores cold energy, similarly to the heat accumulator 50 according to the first embodiment described above.

  The heat accumulator 250 according to the present embodiment has substantially the same configuration as the heat accumulator 50 according to the first embodiment except that a spring 260 is disposed between the heat accumulator plates 251 and 252. In the following description, components having the same configurations as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted as appropriate.

  As shown in FIG. 5, two springs 260 are arranged between the heat storage plates 251 and 252 facing each other. Therefore, as shown in FIG. 5A, when the heat storage plates 251 to 253 are in the separated state, the drive shaft 54 attached to the heat storage plate 251 is placed on the heat storage plate 253 side (right side in FIG. 5) in the facing direction. When moved, the heat storage plate 251 moves to the heat storage plate 253 side. At this time, the heat storage plate 252 is also moved to the heat storage plate 253 side by the urging force of the spring 260, and the heat storage plate 252 and the heat storage plate 253 come into contact with each other as shown in FIG. Thereby, since the area of the exposed surface of the heat storage plates 251 to 253 is smaller than that in the separated state, the exchange heat amount of the heat storage device 250 is reduced.

  Thereafter, by further moving the drive shaft 54 toward the heat storage plate 253, as shown in FIG. 5C, the heat storage plate 251 and the heat storage plate 252 come into contact with each other, and the heat storage plates 251 to 253 come into contact with each other. At this time, since the area of the exposed surface of the heat storage plates 251 to 253 is further reduced, the exchange heat amount of the heat storage device 250 is further reduced.

  As described above, in the present embodiment, similarly to the first embodiment, the heat transfer area, which is the area that contacts the outside air of the heat storage plates 251 to 253, can be increased or decreased. Therefore, it becomes possible to change the exchange heat amount of the heat accumulator 250.

  In the present embodiment, the spring 260 is disposed between the heat storage plates 251 and 252. Therefore, when the heat storage plates 251 to 253 are brought into the contact state from the separated state, the heat storage plate 252 and the heat storage plate 253 are first contacted, and then the heat storage plate 251 and the heat storage plate 252 are contacted. Therefore, the exchange heat quantity can be changed stepwise.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various design changes can be made as long as they are described in the claims. Is.

  For example, in the above-described first and third embodiments, the case where the heat storage plates facing each other are connected to each other by the stoppers 55 and 56 is described. However, what connects the heat storage plates to the stoppers 55 and 56 is described. Is not limited. That is, like the heat accumulator 350 shown in FIG. 6, the heat storage plates 51 and 52 facing each other may be connected by a chain 355, and the heat storage plates 52 and 53 may be connected by a chain 356. Moreover, the heat storage plates need not be connected to each other.

  Furthermore, in the above-described third embodiment, the case where the spring 260 is disposed between the heat storage plates 251 and 252 in order to change the exchange heat amount of the heat storage device 250 in stages has been described. A similar effect can be obtained when a pair of magnets that generate a repulsive force between each other is disposed.

  Further, in the first and third embodiments described above, the case where the guide 57 that slidably supports the heat storage plates 51 to 53 and 251 to 253 is described, but the guide 57 is provided. It does not have to be.

  In addition, in the above-described first to third embodiments, the cold accumulator is stored, and the heat accumulator 50 provided in the low temperature chamber 4 of the cold shock test apparatus 1 has been described. However, the present invention stores heat. It can also be applied to vessels.

  In the above first to third embodiments, the case where the present invention is applied to a thermal shock test apparatus capable of applying a rapid temperature change to a test object has been described. It is also possible to apply the present invention to an environmental test apparatus other than an impact test apparatus, that is, for example, a test apparatus that performs a temperature test or a test apparatus that can change humidity in addition to temperature.

It is a schematic side view which shows the whole structure of the thermal shock test apparatus provided with the thermal accumulator concerning the 1st Embodiment of this invention. It is a perspective view which shows the thermal accumulator of FIG. It is a figure which shows the temperature change in a test chamber at the time of the impact test implementation in the thermal shock test apparatus shown in FIG. It is the figure which looked at the heat accumulator concerning the 2nd Embodiment of this invention from upper direction. It is the figure which looked at the heat accumulator concerning the 3rd Embodiment of this invention from upper direction. It is a perspective view of the heat accumulator concerning the modification of 1st Embodiment.

Explanation of symbols

50, 150, 250, 350 Regenerator 51-53, 151-154, 251-253 Heat storage plate 54, 155-157 Drive shaft (drive mechanism)
55, 56 Stopper (connecting member)
57 Guide 260 Spring 355, 356 Chain (connecting member)

Claims (11)

A plurality of heat storage plates that store hot or cold heat and are arranged to face each other;
A moving mechanism that moves at least one of the plurality of heat storage plates in a direction approaching and moving away from the heat storage plate facing the heat storage plate;
By moving the heat storage plate by the moving mechanism, a plurality of the heat storage plates are separated from each other at a predetermined interval, and at least one of the plurality of heat storage plates and the surface facing the same. A heat accumulator characterized by being able to adopt a proximity state in which the distance from the heat storage plate is narrower than the predetermined distance.   The regenerator according to claim 1, further comprising a connecting member that connects the two heat storage plates facing each other.   The regenerator according to claim 1 or 2, wherein the moving mechanism moves the heat storage plate so that an angle formed by the two heat storage plates facing each other changes. A plurality of the heat storage plates are three or more,
The spring or any one of a pair of magnets that generate a repulsive force is disposed between at least one of the plurality of heat storage plates and the heat storage plate facing the heat storage plate. The heat accumulator according to any one of 3.   The heat storage device according to any one of claims 1 to 4, further comprising a guide for guiding the heat storage plate in a moving direction by the moving mechanism. An environmental test apparatus having a heater that generates hot air or a cooler that generates cold air,
An environmental test apparatus, wherein the regenerator according to any one of claims 1 to 5 is further arranged.   The environmental test apparatus according to claim 6, wherein the heat accumulator is brought into a proximity state corresponding to a predetermined heat exchange amount before the test is started.   The environmental test apparatus according to claim 6, wherein the heat accumulator is placed in the separated state at the start of the test and then placed in the proximity state. An environmental test apparatus comprising at least one test chamber and a preparatory chamber capable of communicating with the test chamber, the heater being configured to generate high-temperature air or a cooler generating low-temperature air. ,
An environmental test apparatus, wherein the regenerator according to any one of claims 1 to 5 is arranged in at least one of the preparation chambers.   When the test chamber and the preparation chamber in which the heat accumulator is arranged are not in communication, the heat accumulator arranged in the preparation chamber is brought into a proximity state corresponding to a predetermined heat exchange amount. The environmental test apparatus according to claim 9.   When the test chamber and the preparation chamber in which the heat accumulator is arranged are communicated to supply air to the test chamber in the preparation chamber, the heat accumulator arranged in the preparation chamber is initially The environmental test apparatus according to claim 9, wherein the separation state is set, and then the proximity state is set.

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