JP5048113B2 - Sealed structure and thermal shock device - Google Patents

Description

  The present invention relates to a configuration of a sealed structure suitable for a thermal shock device that includes a high-temperature bath and a low-temperature bath and applies a thermal shock to a sample for testing or the like. Moreover, it is related with the thermal shock apparatus provided with such a sealing structure.

  With regard to this type of sealed structure and thermal shock device, Patent Document 1 discloses a thermal shock that includes a low-temperature space and a high-temperature space surrounded by a heat insulating wall, and the sample container is configured to be movable between both spaces by a moving device. A test apparatus is disclosed. The low-temperature space and the high-temperature space are arranged side by side in the vertical direction, and the opening (opening portion) formed toward the outside is configured to be closeable by a heat-insulating door that can be opened and closed. In addition, although there is no clear description in patent document 1, it is usual that a heat insulation door or a heat insulation wall is provided with a packing, and is configured so that low temperature or high temperature air does not leak when the heat insulation door is closed. It is.

JP 2002-323423 A (FIG. 3, low temperature space 1, high temperature space 2, sample container 5, heat insulating door 34, heat insulating wall 35)

  In such a thermal shock device, the edge of the opening may be deformed due to various circumstances such as temperature difference, etc., and if this exceeds the allowable limit of the packing, the adhesion of the packing is lost, causing air leakage. End up. The present invention has been made in view of the above circumstances, and its main purpose is to provide a sealed structure that can satisfactorily prevent air leakage even when the edge of the opening is deformed.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  According to the 1st viewpoint of this invention, the sealing structure of the following structures is provided. A door provided so that the opening of the container can be opened and closed, a first packing that protrudes from the door and can be in close contact with the edge of the opening, and protrudes from the edge of the opening And a second packing capable of being in close contact with the door body side, and a flexible film body. In the closed state of the door body, the film body is configured to come into contact with the first packing and the second packing while being elastically deformed.

  With this configuration, even if a gap is generated between the first packing and the second packing and the edge of the opening or the door due to deformation of the edge of the opening of the container, etc., the container is elastically deformed. Since the film body closes this gap by the restoring force, it is possible to satisfactorily prevent air leakage.

  The sealed structure is preferably configured as follows. The base of the film body is fixed to the edge of the opening or the inner surface side of the door body. In the closed state of the door body, the other packing is brought into contact between the base portion and the portion where the film body is in contact with one of the two packings.

  With this configuration, the film body is elastically deformed so as to draw an S-shaped curve in the closed state of the door body, so that the film body is closely adhered to both the first packing and the second packing without a gap. Therefore, the gap between the two packings and the partition plate or the door body can be effectively blocked and air leakage can be prevented.

  In the sealed structure, the film body is attached to the edge of the opening through a pressing body, and the film body can be replaced by separating or removing the pressing body from the edge of the opening. It is preferable that it is comprised.

  According to this configuration, even if the film body is damaged due to long-term use, it can be easily replaced with a new film body, and the maintenance work can be simplified.

  According to a second aspect of the present invention, there is provided a cold shock apparatus comprising a high temperature bath and a low temperature bath, and having the sealing structure in at least one of the high temperature bath and the low temperature bath.

  With this configuration, air leakage from the high temperature tank or the low temperature tank can be well prevented by the film body.

  The above-described thermal shock device is preferably configured as follows. The low-temperature bath includes a partition plate provided at an edge of the opening so as to partition the opening of the low-temperature bath into a plurality of regions. The door body is provided so as to be able to open and close one of a plurality of regions of the opening. The second packing is configured to protrude from the partition plate. The film body is provided on the partition plate.

  With this configuration, the low temperature chamber door (door body) for closing the low temperature chamber can be made small, and the opening / closing operation can be easily performed. In addition, even if the partition plate is bent by the influence of cold air and a gap is generated between the first packing and the second packing and the partition plate or the low-temperature tank door, the elastically deformed film body causes this gap by the restoring force. Since it closes, the leak of cold air can be prevented satisfactorily.

The perspective view which showed the whole structure of the thermal shock apparatus which concerns on one Embodiment of this invention. II-II cross-sectional arrow view of FIG. Sectional drawing which shows a mode that the cryogenic tank door was closed from the state of FIG. Sectional drawing which shows the state which closed the low-temperature tank door in the state in which the partition plate curved. Explanatory drawing which shows the 1st example which attaches a film body to the four sides of opening. Explanatory drawing which shows the 2nd example which attaches a film body to the four sides of opening. Explanatory drawing which shows the 3rd example which attaches a film body to the four sides of opening.

  Next, embodiments of the invention will be described. FIG. 1 is a perspective view showing the overall configuration of a thermal shock device according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line II-II in FIG. FIG. 3 is a cross-sectional view showing a state in which the cryogenic bath door is closed from the state of FIG. FIG. 4 is a cross-sectional view showing a state in which the cryogenic bath door is closed in a state where the partition plate is curved.

  FIG. 1 shows an overall configuration of a thermal shock device 1, which is a main body (container) having a heat insulating box structure in which a high temperature bath (high temperature space) 2 and a low temperature bath (low temperature space) 3 are formed. 4 is provided. Specifically, the internal space of the main body 4 is partitioned into upper and lower parts, and the upper half part is a high temperature tank 2 and the lower half part is a low temperature tank 3.

  The thermal shock device 1 includes a heating device and a cooling device (not shown), and is configured such that high-temperature air circulates inside the high-temperature tank 2 and low-temperature air circulates inside the low-temperature tank 3. In the thermal shock device 1 of the present embodiment, the temperature in the high temperature bath 2 can be kept at a maximum of about 200 ° C., and the temperature in the low temperature bath 3 can be kept at a minimum of about −80 ° C.

  A sample container 5 is supported inside the main body 4, and the sample container 5 is configured to be movable up and down between the high-temperature tank 2 and the low-temperature tank 3 by an appropriate moving mechanism (not shown). As a result, a sample such as an electronic component arranged inside the sample container 5 is exposed to high-temperature air or low-temperature air, and a thermal shock can be applied to the sample. As a moving mechanism for moving the sample container 5 up and down, a known mechanism can be adopted as appropriate.

  An opening 6 of the high temperature tank 2 and an opening 7 of the low temperature tank 3 are formed on the front surface of the main body 4 side by side. Each opening part 6 and 7 is comprised by the rectangular shape. In addition, the left and right edges of the opening 7 of the low-temperature tank 3 are fixed to both ends of a partition plate 8 having an elongated shape and a thickness of about 30 mm. The partition plate 8 is arranged so as to divide the opening 7 of the low-temperature tank 3 into approximately two equal parts in the vertical direction so as to form a rectangular upper region 7u and a lower region 7b.

  And the low temperature tank cover 9 provided with the heat insulation structure is fixed with a screw (not shown) so as to close the region 7b below the partition plate 8 suspended in the opening 7 (FIG. In order to show the state of the opening 7 of the low-temperature tank 3 in an easily understandable manner, the low-temperature tank cover 9 is removed). A packing 11 projects from the edge of the inner surface of the low-temperature tank cover 9, and a packing 12 projects from the edge of the lower region 7b. These two packings 11 and 12 prevent the leakage of cold air from the lower region 7b.

  In addition, a low temperature bath door (door body) 10 having a heat insulating structure is pivotally supported on the main body 4 via a hinge 13 so that the region 7u above the partition plate 8 can be opened and closed. A packing (first packing) 21 projects from the edge of the inner surface of the cryogenic bath door 10, and a packing (second packing) 22 projects from the edge of the upper region 7u. These two packings 21 and 22 are for preventing the leakage of cold air from the upper region 7u.

  As described above, in this embodiment, the opening 7 of the low-temperature tank 3 is divided into the upper region 7u and the lower region 7b by the partition plate 8, and the upper region 7u is divided by the low-temperature chamber door 10 into the lower region 7b. Are closed by a low-temperature tank cover 9. As a result, compared to a so-called single door configuration, the cryogenic bath door 10 is lighter and can be easily opened and closed.

  Here, for the thermal shock apparatus 1 as in the present embodiment, in order to be able to test a large sample, or to stabilize the temperature distribution in the space, the low temperature bath 3 and the high temperature bath 2 are used. There is a need to secure a wide range. However, for example, if the cryogenic bath 3 is secured large, the opening 7 also becomes large, and the door body that closes it also becomes large. As a result, the door body becomes heavier and the opening / closing force may be as high as 30 kg, for example, and the door opening / closing operation becomes heavy labor. In this respect, in the present embodiment, the opening 7 is partitioned by the partition plate 8 as described above, whereby the low-temperature tank door 10 can be reduced in weight and easily opened and closed.

  Furthermore, in order to be able to open and close the opening 6 of the high-temperature tank 2, a high-temperature tank door 15 having a heat insulating structure is pivotally supported on the main body 4 via a hinge 14. A packing 16 projects from the edge of the opening 6, and when the high-temperature tank door 15 is closed, the packing 16 comes into close contact with the inner surface of the high-temperature tank door 15, and high-temperature air leaks from the opening 6. There is no such thing.

  As shown in FIG. 2 as a sectional view taken along the line II-II in FIG. 1, the partition plate 8 located on the edge (one of the four sides) of the upper region 7u has a flat front surface (vertical surface). The packing 12 and 22 are installed on the front surface. As shown in FIGS. 1 and 2, a dew receptacle (presser body) 17 is fixed to the front surface of the partition plate 8 with screws 18, and this dew receptacle 17 adheres to the low temperature bath door 10 as dew. It is designed to be able to receive and collect water drops.

  As shown in FIG. 2, a flexible film body 19 is installed on the front surface of the partition plate 8. The film body 19 is a polyester film configured in a sheet shape having a thickness of about 0.1 mm, and is formed in a rectangular shape having a long side as long as the length of the partition plate 8. . One end side (base end side, lower end side) of the film body 19 in the short direction is sandwiched between the dew receiver 17 and the partition plate 8 and is sandwiched between the screws 18. The base end side of the film body 19 is fixed in a state of being pressed down by the dew receiver 17 so as to be in close contact with the front surface of the partition plate 8 throughout the longitudinal direction without any gap.

  The base end side of the film body 19 is attached in contact with the front surface of the partition plate 8 and is directed in the vertical direction. The film body 19 is bent forward from the clamping part between the dew receiver 17 and the partition plate 8 toward the upper side (the other end side in the short side direction of the film body 19 and the free end side). The free end side is in contact with the packing 22 protruding forward from the front surface of the partition plate 8.

  FIG. 2 shows the open state of the low temperature bath door 10. When the low temperature bath door 10 is closed from this state, the packing 21 of the low temperature bath door 10 pushes the film body 19 toward the partition plate 8 as shown in FIG. 3. The packing 21 is in close contact with the partition plate 8 so as to sandwich the film body 19. Further, the packing 22 on the side of the partition plate 8 is in close contact with the low temperature tank door 10 so as to sandwich the film body 19. That is, in the closed state of the low temperature tank door 10 of FIG. 3, the film body 19 is elastically deformed into an S shape and contacts both the two packings 21 and 22 between the partition plate 8 and the low temperature tank door 10. It is supposed to be.

  As shown in FIG. 1, the partition plate 8 is formed to be considerably elongated so as to have a length approximately equal to the width of the opening 7 of the low-temperature tank 3, but the thickness in the front-rear direction is increased too much. (If the partition plate 8 protrudes to the inside of the low temperature tank 3, the circulation of the low temperature air in the low temperature tank 3 is hindered, and the low temperature tank 3 cannot be cooled well). Further, the partition plate 8 is exposed to the cold air in the low-temperature tank 3, and thus, for example, the central portion in the longitudinal direction of the partition plate 8 is easily bent so as to be recessed about several millimeters when viewed from the front side. If the degree of curvature exceeds the allowable limit of the packings 21, 22, the packings 21, 22 cannot be brought into close contact with the partition plate 8 side or the low temperature bath door 10 side, and between the partition plate 8 and the low temperature bath door 10. There will be a gap.

  However, in this embodiment, when the low-temperature tank door 10 is closed, a gap is generated between the packing 21 and the partition plate 8 as shown in FIG. The film body 19 fixed to the plate 8 is curved in an S shape and closes to the two packings 21 and 22 and the inner surface of the low temperature chamber door 10 to close the gap. It is possible to prevent a large amount of condensation from leaking and the temperature of the low temperature tank 3 from rising.

  In the state of FIG. 4, in the vicinity of the portion of the film body 19 that contacts the packing 22 (at the free end side), the film body 19 is exposed to cold air, so its elasticity is considered to decrease considerably. However, the vicinity of the base portion of the film body 19 has many portions that are exposed to the outside air and is not exposed to much cold air, so that the elasticity is not lost so much and the gap between the packings 21 and 22 is satisfactorily filled by the restoring force of the film body 19 itself. be able to.

  As described above, the thermal shock device 1 of the present embodiment includes the high-temperature tank 2 and the low-temperature tank 3, and the partition plate 8 provided so as to partition the opening 7 of the low-temperature tank 3 into a plurality of regions 7u and 7b. A low temperature bath door 10 provided so as to be able to open and close one of the plurality of divided areas of the opening 7 (upper region 7u), and protruding from the low temperature bath door 10 and the partition plate 8 side A first packing 21 that can be in close contact with each other, a second packing 22 that protrudes from the partition plate 8 and can be in close contact with the low-temperature tank door 10 side, and a flexible film body 19. As shown in FIGS. 3 and 4, the film body 19 is configured to come into contact with the two packings 21 and 22 while being elastically deformed in the closed state of the low temperature bath door 10.

  Therefore, the low temperature chamber door 10 for closing the low temperature chamber 3 can be made compact and light, and the opening / closing operation can be easily performed. Further, even if the partition plate 8 is bent by the influence of cold air and a gap is generated between the packings 21 and 22 and the partition plate 8 or the low temperature bath door 10 as shown in FIG. Since this gap is closed by the restoring force, leakage of cold air can be satisfactorily prevented.

  Further, the base portion of the film body 19 is fixed to the partition plate 8, and the free end side (upper end side) of the film body 19 is connected to the second packing 22 in the open state of the low temperature bath door 10 (FIG. 2). In contact. And in the closed state of the low-temperature tank door 10, as shown in FIG.3 and FIG.4, the said 1st packing 21 is between the contact part with the said 2nd packing 22 of the said film body 19, and the said base. It comes to contact. Therefore, since the film body 19 is elastically deformed so as to surely draw an S-shaped curve in the closed state of the low temperature bath door 10, the film body 19 adheres well to the two packings 21, 22 without any gap, and the packings 21, 22 And the gap between the partition plate 8 and the low-temperature tank door 10 can be effectively blocked. Further, since the vicinity of the base portion of the film body 19 is not exposed to much cold air, the elasticity of the film body 19 itself can be effectively exhibited and the gap can be satisfactorily closed.

  The base of the film body 19 is sandwiched between the dew receiving tray 17 that receives dew dripping from the low temperature bath door 10 on the lower side and the partition plate 8. Therefore, a special member for fixing the film body 19 is not necessary, and the number of parts can be reduced.

  Moreover, in this embodiment, since the polyester film is employ | adopted as the said film body 19, it does not become brittle even in a severe low-temperature environment, and has the favorable airtightness, the low-temperature-tank door 10, the partition plate 8, and the packing 21. 22 can be surely prevented from leaking cold air from the gap.

  In addition, since the said film body 19 is comprised by the thickness of about 0.1 millimeter, the opening and closing of the low temperature tank door 10 is smooth, and it can prevent the leak of the cold air from a clearance gap reliably. In addition, since the elasticity of the film body 19 will fall when the film body 19 is too thin, the clearance gap produced like FIG. 4 cannot be closed reliably, and it is not preferable. On the other hand, if the film body 19 is too thick, the elasticity of the film body 19 is too strong, and a large force is required when closing the low-temperature tank door 10, which is not preferable from the viewpoint of ease of opening and closing operations.

  Further, the film body 19 is attached to the partition plate 8 via a dew receiver 17, and the dew receiver 17 is removed by removing the screw 18 and removing the dew receiver 17 or by simply loosening the screw 18. The film body 19 can be exchanged by being separated from 8. Accordingly, even when the film body 19 is settling due to long-term use, the film body 19 can be easily replaced with a new film body 19, so that the maintenance work can be simplified.

  Although the preferred embodiment of the present invention has been described above, the above configuration can be changed as follows, for example.

  The thermal shock device 1 has a configuration in which the high-temperature tank 2 and the low-temperature tank 3 are arranged one above the other. However, the present invention is not limited to this and may be arranged in the lateral direction, for example.

  A plurality of partition plates 8 may be provided so that the opening 7 of the low-temperature tank 3 is partitioned into three or more regions. Alternatively, the partition plate 8 may be omitted, but a so-called single door structure may be used, and the film body 19 may be fixed to the edge of the opening 7.

  In the above embodiment, the second packing 22 is arranged inside the first packing 21 when the cryogenic bath door 10 is closed. However, the inside of the first packing 21 is reversed, and the first packing 22 is arranged inside the second packing 22. You may comprise so that the packing 21 may be located. In the above embodiment, the film body 19 is in contact with the second packing 22 when the door is opened (FIG. 2). However, the present invention is not limited to this. It is good also as a structure which does not contact.

  The film body 19 is not limited to a polyester film, and other thin plate-like members having flexibility can be appropriately employed. Further, the thickness of the film body 19 may be changed. However, as described above, it is preferable to use a polyester film of about 0.1 millimeter.

  The film body 19 is configured to be simply sandwiched and fixed between the dew receiver 17 and the partition plate 8, but a hole is formed in the film body 19 so that the screw 18 is passed through the hole. Also good.

  The structure for fixing the film body 19 is not limited to the structure using the dew receiver 17, and a pressing body for fixing the film body 19 may be provided separately from the dew receiver 17. However, it is preferable that the pressing body is configured to be in close contact with the partition plate 8 without a gap over the entire longitudinal direction of the film body 19.

  You may make it the structure which fixes the base end of the film body 19 not to the partition plate 8 but to the inner surface side of the low-temperature tank door 10. Moreover, the film body 19 is not limited to the case where it is attached only to the lower edge (lower side) of the opening (upper region 7u) as the object to be sealed as described above. For example, the film body 19 is attached to the upper side, attached to two opposite sides, It can be attached to two sides that fit or over the entire circumference of the opening edge. Examples of the case where the film body is fixed over the entire circumference of the four sides of the rectangular opening 7u are shown in FIGS. 5 to 7. FIG. 5 shows an example in which a separate film body 19 is attached to each of the four sides, and FIG. 7 is an example in which a rectangular frame-shaped film body 19 is attached, and FIG. 7 is an example in which an oblique cut of 45 ° is formed inside the corner portion of the film body 19 in FIG. In the case of FIG. 6 and FIG. 7, the corner portion is kinked when the film body 19 is bent, and in the case of FIG. 7, there is a possibility that the cut portion opens and air leaks, but in the case of FIG. Even if it is kinked, the film bodies 19 are overlapped with each other, so that there is an advantage that air hardly leaks.

  The sealed structure including the film body 19 can be provided not on the low temperature tank 3 side of the thermal shock apparatus 1 but on the high temperature tank 2 side. In this case, the material of the film body 19 needs to have heat resistance. For example, it is conceivable to use polyimide, Teflon (registered trademark), carbon film, glass cloth, or the like.

  Further, the above-described sealed structure for preventing air leakage can be applied not only to a thermal shock test apparatus but also to other types of test apparatuses.

DESCRIPTION OF SYMBOLS 1 Cold shock apparatus 2 High temperature tank 3 Low temperature tank 4 Main body (container)
7 Opening part of low-temperature tank 7u Upper region (one of the regions partitioned into a plurality of openings)
8 Partition plate 10 Low temperature bath door (door body)
17 Dew tray (presser)
19 Film body 21 First packing 22 Second packing

Claims (3)

A thermal shock device comprising a high-temperature tank and a low-temperature tank,
The cryostat is
A door provided so that the opening of the container can be opened and closed, a first packing that protrudes from the door and can be in close contact with the edge of the opening, and protrudes from the edge of the opening And a second packing capable of being in close contact with the door body side, and a flexible film body having a base fixed to the edge of the opening or the inner surface side of the door body, and the door body in a closed state Then, the film body has a sealing structure in which the other packing is in contact between the portion of the two packings in contact with one packing and the base portion,
The opening of the cryogenic bath is partitioned into a plurality of regions,
The cold shock apparatus according to claim 1, wherein the door of the low-temperature tank is provided so as to be able to open and close one of a plurality of regions of the opening of the low-temperature tank. The thermal shock device according to claim 1,
The low temperature bath includes a partition plate provided at an edge of the opening so as to partition the opening of the low temperature bath into a plurality of regions,
The second packing is configured to protrude from the partition plate,
The thermal shock device according to claim 1, wherein the film body is provided on the partition plate. A door provided to be able to open and close the opening of the container;
A first packing that protrudes from the door and can be in close contact with the edge of the opening;
A second packing that protrudes from the edge of the opening and can be in close contact with the door body;
A flexible film body;
With
The base of the film body is fixed to the inner surface side of the door body,
In the closed state of the door body, the other packing is in contact with the base between the portion where the film body is in contact with one of the two packings and the base.

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