JP2009214080A - Constant temperature bath and method of manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten a delivery date while enabling a through-hole 76 to be formed at a required position in a constant temperature bath 1 keeping the interior of a testing chamber 35 at least at a predetermined temperature, the constant temperature bath having a testing chamber 35 for housing a test specimen, and at least one through-hole 76 communicating the outside of the testing chamber 35 with the inside thereof. <P>SOLUTION: The constant temperature bath is formed as an approximately rectangular box by a double wall structure including an inner wall 31, an outer wall 32, and a heat insulating material 33 between the inner wall 31 and the outer wall 32, and at the same time, a main body 2 zoning and forming a test chamber 35 with the inner wall 31 is provided. In a box-shaped main body 2, the inner wall 31 and the outer wall 32 composing at least one plane 23 are respectively constituted by including opening parts 31a, 32a, predetermined parts of which are set as a part capable of forming a through-hole 76, and closing plates 71, 72 attached so as to be able to attach to and detach from the peripheral parts of the opening pats 31a, 32a wherein the through-hole 76 is formed so as to penetrate the closing plates 71, 72. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a thermostat for maintaining at least a predetermined temperature in a test chamber that houses a specimen, and a method for manufacturing the same.

  Conventionally, as a test apparatus used for, for example, evaluation of characteristics of electronic equipment and electronic / semiconductor components, a constant temperature bath for maintaining a test chamber containing a specimen at a predetermined temperature, or a test chamber with a predetermined temperature and There are known constant temperature and humidity chambers (hereinafter collectively referred to simply as a constant temperature chamber) for maintaining humidity.

Such a thermostatic chamber is designed to supply conditioned air into the test chamber by controlling air-conditioning equipment such as a refrigerator and a heater, and the test chamber is sealed so as not to be affected by the external ambient temperature and humidity. It is a space. Specifically, the thermostat is a main body formed in a substantially rectangular box shape by a double wall structure including an inner wall and an outer wall, and a heat insulating material between the inner and outer walls, as disclosed in Patent Document 1, for example. The test chamber is defined by the inner wall of the main body.
JP 2006-29650 A

  By the way, in such a characteristic evaluation test or the like, a sensor or the like may be attached to the specimen in the test chamber. In such a case, the inside or outside of the test chamber that is a sealed space is formed through the side surface of the main body. Wiring or the like connected to the sensor or the like is laid in the conduction hole to be communicated. Here, since such a conduction hole is determined by the customer according to various conditions such as the shape of the specimen, the mounting position of the sensor, and the position where the specimen is placed in the test chamber, the position where the conduction hole is formed. Are in different positions for each thermostat.

  On the other hand, the main body encloses the heat insulating material after assembling an inner tank that partitions and forms a test chamber that is a sealed space by joining a plurality of plate materials together by welding or the like and winding the heat insulating material or the like around it. Thus, a plurality of plates are joined together to assemble a rectangular box-shaped exterior. In this way, after assembling a box-shaped main body having a double wall structure, it is difficult to form a conduction hole on the side surface or the like, for example, due to restrictions on tools and alignment of through holes in the inner wall and outer wall. It is impossible for reasons such as.

  Therefore, when manufacturing a thermostatic chamber, after the position of the conduction hole is determined, the assembly of the main body as described above is started, and thereafter, various internal parts including the air conditioner are attached. Become. That is, until the position of the conduction hole is determined, the manufacture of the thermostatic bath cannot be started, which causes a delay in delivery. Such a problem is a problem peculiar to the thermostatic bath in which a conduction hole must be formed at a position according to a customer's request for a main body having a double wall structure.

  This invention is made | formed in view of this point, The place made into the objective is to shorten the delivery date of a thermostat, enabling the formation of a conduction hole in a desired position.

  According to one aspect of the present invention, there is provided a thermostatic chamber having a test chamber in which a specimen is accommodated and at least one conduction hole for communicating the inside and outside of the test chamber, and maintaining the test chamber at least at a predetermined temperature. The inner wall and the outer wall facing each other at a predetermined interval in the thickness direction and a double wall structure including a heat insulating material between the inner and outer walls are formed into a substantially rectangular box shape, and the test chamber is formed by the inner wall. Is provided with a main body that is partitioned.

  Each of the inner wall and the outer wall constituting at least one surface of the box-shaped main body has an opening in which a predetermined portion is set as a portion where the conduction hole can be formed, and an opening so as to close the opening And a closing plate that is detachably attached to the peripheral edge of the inner wall, and the conduction hole is formed through the closing plates on the inner wall and the outer wall.

  According to this configuration, at least one surface of the box-shaped main body includes an opening as a portion where the conduction hole can be formed, and an inner wall configured to be detachably attached so as to close the opening. And an outer wall. For this reason, after assembling the box-shaped main body, the through-holes can be accurately formed at predetermined positions in each of the removed blocking plates by removing the blocking plates on the inner wall and the outer wall. Then, by reattaching each blocking plate in which the through holes are formed to the peripheral edge portion of the opening, and connecting the through holes of the inner wall and the outer wall with each other, there is a conduction hole that communicates the inside and outside of the test chamber. It will be penetrated.

  In other words, in this configuration, the through hole can be formed through the double wall structure during and after the assembly of the box-type main body. It is possible to start the assembly. Accordingly, the delivery time of the thermostatic chamber is shortened.

  The closing plate of the outer wall and the closing plate of the inner wall constitute a unit by being connected to each other in a state in which a heat insulating material is filled between both closing plates, and the unit can be attached to and detached from the main body. It is good also as being attached to.

  In this way, the outer wall blocking plate and the inner wall blocking plate can be removed at the same time and attached at the same time, and when the through holes are formed in each of the removed blocking plates, There is an advantage that alignment can be performed easily.

  According to another aspect of the present invention, there is provided a constant temperature bath having a test chamber in which a specimen is accommodated and at least one conduction hole for communicating the inside and outside of the test chamber, and maintaining the test chamber at least at a predetermined temperature. In this manufacturing method, a plurality of wall members are fixed to each other to assemble a substantially rectangular box-shaped inner tank, and at least one of the plurality of wall members can be formed with a predetermined part of the conduction hole. A step of forming a specific wall member comprising: an opening that is a part; and a closing plate that is detachably attached to a peripheral edge of the opening so as to close the opening; A process of attaching a heat insulating material to the outer periphery, and assembling a substantially rectangular box-shaped exterior by fixing a plurality of wall members to each other so as to surround the outer periphery of the heat insulating material, and facing the specific wall member of the inner casing The wall member arranged And a step of forming the specific wall member including the closing plate, a step of removing the blocking plate of the specific wall member facing each other in the inner casing and the exterior, and forming a through hole in each of the removed blocking plates A step of forming the conduction hole in which the through-holes communicate with each other by attaching the closing plate in which the through-holes are formed to the peripheral portions of the opening portions of the inner tank and the exterior, including.

  As described above, according to this manufacturing method, since the through hole can be formed through and through the assembly of the double wall structure box-type main body or after the assembly, the position of the through hole is determined. Before the assembly of the main body is started, the delivery time of the thermostatic bath can be shortened accordingly.

  As described above, according to the present invention, even during or after the assembly of the double-walled box-shaped main body, the blocking plate is removed from the main body to form a through-hole, thereby bringing it into a desired position. Since it is possible to form the through holes with high accuracy, the delivery time of the thermostatic bath can be shortened compared to the conventional structure in which the production could not be started until the position of the through holes is determined.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

(Embodiment 1)
1 and 2 show the appearance of the constant temperature and humidity chamber 1 according to the present embodiment. The constant temperature and humidity chamber 1 has a substantially rectangular box shape and has an upper body having a test chamber in which a specimen is accommodated. 2 and a lower main body 6 which is located below the upper main body 2 and supports the upper main body 2 and accommodates a refrigerator or the like therein.

  As shown in FIGS. 1 to 3, the upper body 2 includes an upper surface 21, a lower surface 22, a left side surface 23, a right side surface 24, and a rear surface 25, and is formed in a substantially rectangular box shape having an opening on the front side. Yes. On the front side of the upper body 2, an opening / closing door 26 for opening and closing the opening is attached via hinges 26a and 26a. The open / close door 26 constitutes the front surface of the upper body 2.

  As shown in FIGS. 8 and 9, the upper and lower surfaces 21 to 26 of the upper main body 2 are filled between the inner wall 31 and the outer wall 32 opposed to each other in the thickness direction, and both the walls 31 and 32. The surfaces 21 to 26 of the upper body 2 have a so-called double wall structure. Thus, a substantially rectangular parallelepiped internal space 34 is defined in the upper body 2 by the inner wall 31 of each surface. The internal space 34 is a space including a test chamber 35 as will be described later, and the inside of the test chamber 35 is a sealed space that is not affected by the external ambient temperature and humidity.

  In other words, the configuration of the upper main body 2 is constituted by a substantially rectangular box-shaped inner tub, a substantially rectangular box-shaped outer casing, and a heat insulating material filled between the inner tub and the outer casing. be able to. The inner wall 31 may be formed of, for example, a stainless steel plate, and the outer wall 32 may be formed of, for example, a galvanized steel plate. The heat insulating material 33 may be made of, for example, hard foamed urethane and glass wool.

  As shown in FIGS. 1 to 3, the opening / closing door 26 is formed with an observation window 27 made of a transparent member so that the inside of the test chamber 35 can be observed from the outside. For example, a monitor 28 made of a liquid crystal display is attached. Reference numeral 29 denotes a keyed puller.

  A partition wall 38 is erected in a predetermined position in the front-rear direction of the internal space 34 of the upper main body 2, whereby the internal space 34 is on the front side of the partition wall 38 and is opened by the opening / closing door 26. The chamber is divided into two chambers: a test chamber 35 that is opened and closed, and an air conditioning chamber 36 that is a rear side of the partition wall 38 and serves as a circulation path for conditioned air.

  In the test chamber 35, a pair of adjustment ladders 39a, 39a extending vertically are respectively attached to the left and right side walls of the test chamber 35 with a predetermined interval in the front-rear direction (in FIG. 3, one side adjustment ladder 39a is provided). Only shown). By attaching the shelf 39 to the adjustment ladder 39a, it is possible to place the shelf 39 at a desired height position in the test chamber 35 and place the specimen.

  A suction port 38a for sucking the circulating air in the test chamber 35 is formed at the lower part of the partition wall 38, and a blower outlet 38b for blowing the circulating air into the test chamber 35 is formed at the upper part. . The test chamber 35 and the air conditioning chamber 36 communicate with each other through the suction port 38a and the air outlet 38b, and the air sucked into the air conditioning chamber 36 from the lower part of the test chamber 35 passes through the air conditioning chamber 36. From above and blown to the upper part of the test chamber 35 (see the white arrow in FIG. 3).

  In the air conditioning chamber 36, a humidifier 41 for humidifying the air in order from the lower part to the upper part, a cooler for evaporating the supplied refrigerant as will be described later and cooling the air by the heat of evaporation. 51, a heater 42 made of, for example, a wire strip heater, for heating the air, and a fan (for example, a sirocco fan) 43 for circulating the air are provided. In this constant temperature and humidity chamber 1, the temperature and humidity in the test chamber 35 are set to the set temperature and humidity by appropriately operating the air conditioner composed of the humidifying heater 41, the cooler 51, and the heater 42, respectively. The humidity is constant.

  The humidifying heater 41 includes a pan 41a in which water is stored, and a heater (for example, a sheathed heater) 41b that generates steam by heating the water in the pan 41a. The pan 41a is appropriately supplied with water from a tank (not shown) disposed in the lower main body 6.

  The cooler 51 is a device that constitutes a part of the refrigerator 5, and the refrigerator 5 is further compressed from the outlet side of the cooler 51 in order of the refrigerant flow direction by a compressor 52 that compresses the refrigerant. It includes a condenser 53 that condenses the refrigerant, an electromagnetic on-off valve 54, an expansion valve 55 that expands the refrigerant and supplies the refrigerant to the cooler 51, and a refrigerant pipe 56 that connects them to each other. Among the devices 51 to 55 constituting the refrigerator 5, the cooler 51 is disposed in the air-conditioning chamber 36 as described above to cool the air, and on the other hand, the condensin including at least the compressor 52 and the condenser 53. The group unit 57 is disposed in the lower body 6.

  The condensing unit 57 includes a cooling fan 58 for cooling the condenser 53. In addition, an inlet 61 for introducing air into the lower body 6 is formed on the front surface of the lower body 6, and the air introduced from the inlet 61 is condensed by driving the cooling fan 58. The condenser 53 is cooled by passing through the unit 57. The air that has passed through the condensing unit 57 passes through an exhaust passage 62 that extends in the vertical direction at the back of the lower main body 6 and the upper main body 2, and is an exhaust port that opens upward on the upper surface of the constant temperature and humidity chamber 1. From 63, it is comprised so that it may exhaust outside (refer the white arrow of FIG. 3).

  Thus, as the most characteristic point in the constant temperature and humidity chamber 1, openings 31 a and 32 a communicating with the inside of the test chamber 35 are respectively formed on the left and right side surfaces 23 and 24 and the upper surface 21 of the upper body 2. The closing unit 7 is attached so as to close the openings 31a and 32a. As shown in FIG. 1, the openings 31 a and 32 a are portions that are set as a range in which the conduction hole 76 can be formed. The conduction hole 76 is a hole that communicates the inside and outside of the test chamber in order to lay wiring for sensors and the like connected to the specimen placed in the test chamber 35.

  Specifically, the left and right side surfaces 23 and 24 and the upper surface 21 of the upper body 2 are respectively formed on an inner wall 31 and an outer wall 32 as shown in FIGS. The substantially rectangular opening parts 31a and 32a to be communicated are formed (in FIG. 8, the opening parts 31a and 32a of the left side surface 23 are shown). Flange 31b, 32b for attaching the closure unit 7 is formed in the edge part in each opening part 31a, 32a of the inner wall 31 and the outer wall 32. As shown in FIG.

  In particular, the opening 31a of the inner wall 31 is provided with an intermediate flange 31c that extends in the front-rear direction at an intermediate position in the height direction, and connects the front and rear opening edges to each other. The opening 31a of the inner wall 31 is divided into two vertically by 31c. By doing so, although the outer wall 32 and the inner wall 31 have relatively large openings 31a and 32a, the upper body 2 can ensure a desired strength.

  For example, as shown in FIGS. 6 and 7, the closing unit 7 is a unit for forming a conduction hole 76. Specifically, the closing unit 7 is shown in FIGS. These drawings show the closing unit 7 for the left side surface 23), an inner closing plate 71 for closing the opening 31a of the inner wall 31, an outer closing plate 72 for closing the opening 32a of the outer wall 32, and an inner closing plate. 71, extending from the entire periphery of 71 toward the outer closing plate 72, connecting the inner and outer closing plates 72 to each other, and the inner space 34 surrounded by the inner and outer closing plates 71, 72 and the connecting portion 73. And a heat insulating material 74 filled therein. Here, a slit is formed in the inner closing plate 71 at an intermediate position in the height direction corresponding to the intermediate flange 31c, and the inner closing plate 71 is vertically divided into two by this slit.

  Screw holes 71a for screwing the flanges 31b and 31c are formed in the inner closing plate 71 at substantially equal intervals along the periphery, and the outer closing plate 72 is also the same. In addition, screw holes 72a are formed at substantially equal intervals along the periphery.

  Thus, the closing unit 7 is attached to the left and right side surfaces 23 and 24 and the upper surface 21 of the upper body 2 by being screwed in a state of being fitted in the openings 31 a and 32 a of the upper body 2. It is designed to be mounted and fixed as possible.

  Next, a procedure for manufacturing the constant temperature and humidity chamber 1 having the above-described configuration will be described. Here, it is assumed that the position of the conduction hole 76 has not been determined at the time when the manufacture of the constant temperature and humidity chamber 1 is started.

  First, a rectangular box-shaped inner casing is assembled by joining a plurality of plate materials to each other by welding, for example. At this time, an opening 31a is provided in each of the plate material (inner wall 31) corresponding to the left and right side surfaces and the plate material (inner wall 31) corresponding to the upper surface.

  Next, the heat insulating material 33 is attached to the outer periphery of the inner tank. After attaching a heat insulating material, a board | plate material is arrange | positioned so that the outer periphery may be surrounded, and they are mutually joined, A rectangular box-shaped exterior is assembled. At this time, an opening 32a is provided in each of the plate material (outer wall 32) corresponding to the left and right side surfaces and the plate material (outer wall 32) corresponding to the upper surface.

  Then, the closing unit 7 manufactured by a separate process is prepared, and it is fitted into the openings 31a and 32a, and the closing unit 7 is fixed with screws. It should be noted that the heat insulating material 33 may not be attached in advance to the portions corresponding to the openings 31a and 32a to which the closing unit 7 is attached, or may be removed after the heat insulating material 33 is attached. .

  If the upper body 2 is formed in this way, necessary processes such as a process of attaching the door 26 to the front side of the upper body 2 and a process of attaching internal components such as the humidifying heater 41 in the air conditioning chamber 36 are performed. In an appropriate order.

  Thus, when the position of the conduction hole 76 is determined before the constant temperature and humidity chamber 1 is completed, a process of penetrating the conduction hole 76 at an arbitrary timing is performed.

  In this step, first, the closing unit 7 corresponding to the surface (the left side surface 23, the right side surface 24 and / or the upper surface 21) on which the conduction hole 76 is formed is removed from the upper body 2 by removing a screw. Then, a through hole is formed at a predetermined position (position of the conduction hole 76) in the inner closing plate 71 and the outer closing plate 72 of the removed closing unit 7. As shown in FIG. 9, a through hole 76 that penetrates the closing unit 7 in the thickness direction is formed by fitting and fixing the cylinder 75 to the formed through hole (see FIGS. 6 and 7). In the example shown in the figure, the conduction holes 76 are formed at two locations, ie, an upper position at a substantially central position in the left-right direction of the closing unit 7 and a substantially central position.

  If the conduction hole 76 is formed in the closing unit 7, the closing unit 7 is fitted into the openings 31a and 32a, and the closing unit 7 is attached and fixed to the upper body 2 again with screws.

  Thereafter, as shown in FIG. 9, the inside of the test chamber 35 is sealed from the inside of the test chamber 35 by filling the gap between the inner closing plate 71 and the opening 31 a with a sealing agent 77 for all the closing units 7. enable.

  As described above, the constant temperature and humidity chamber 1 in which the conduction hole 76 is formed at a desired position is completed.

  In the thermo-hygrostat 1 having the above-described configuration, the left and right side surfaces 23 and 24 and the upper surface 21 of the upper body 2 are configured by specific wall members including the openings 31a and 32a and the closing unit 7, respectively. It is not necessary to determine the position of the conduction hole 76 in advance.

  That is, in the conventional constant temperature and humidity chamber that does not have such a specific wall member, the formation of the conduction hole 76 after the upper body 2 is assembled in a rectangular box shape is, for example, a point of restriction on the tool or the positional accuracy of the through hole. From the point of view, it was difficult. For this reason, assembly of the inner tank had to be started after the position of the conduction hole 76 was determined.

  On the other hand, in the above configuration having the specific wall member, as described above, not only during the assembly of the upper body 2 but also after the assembly is completed, the closure unit 7 is removed from the upper body 2 to remove it. It is possible to accurately form the conduction hole 76 at a desired position of the closed unit 7. Therefore, it becomes possible to start the manufacture of the constant temperature and humidity chamber 1 before the position of the conduction hole 76 is determined, and the delivery time of the constant temperature and humidity chamber 1 can be shortened accordingly.

  Further, the inner closing plate 71 and the outer closing plate 72 are connected to each other to constitute the closing unit 7, so that the openings 31a and 32a are opened and closed only by removing and attaching the closing unit 7. In addition, since the positions of the inner closing plate 71 and the outer closing plate 72 are not displaced, it is easy to align the through hole formed in the inner closing plate 71 and the through hole formed in the outer closing plate 72. There is an advantage of becoming.

(Embodiment 2)
FIG. 10 shows a cross-sectional view of the constant temperature and humidity chamber 1 (upper main body 2) according to the second embodiment. In the second embodiment, an inner closing plate 71 for closing the opening 31a of the inner wall 31 and an outer closing plate 72 for closing the opening 32a of the outer wall 32 are connected to each other by a connecting portion to constitute a closing unit. Instead, the inner closing plate 71 and the outer closing plate 72 are separated from each other.

  When manufacturing the constant temperature and humidity chamber 1 according to the second embodiment, the following procedure is performed. That is, first, a plurality of plate members are joined to each other by welding, for example, to assemble a rectangular box-shaped inner casing. At this time, an opening 31a is provided in each of the plate material (inner wall 31) corresponding to the left and right side surfaces and the plate material (inner wall 31) corresponding to the upper surface. The inner closing plate 71 is fixed to the opening 31a with screws.

  Then, a heat insulating material 33 is attached to the outer periphery of the inner tub, and then a plate material is disposed so as to surround the outer periphery of the heat insulating material 33, and they are joined together to assemble a rectangular box-shaped exterior. . At this time, an opening 32a is provided in each of the plate material (outer wall 32) corresponding to the left and right side surfaces and the plate material (outer wall 32) corresponding to the upper surface. The outer closing plate 72 is fixed to the opening 32a with screws. Thus, the upper body 2 is substantially formed.

  When the conduction hole 76 is formed in the upper body 2, the outer closing plate 72 and the inner closing plate 71 are removed from the upper body 2 by removing the screws. And a through-hole is formed in a predetermined position with respect to each of the removed inner and outer closing plates 71 and 72.

  After the through holes are formed in the inner and outer closing plates 71 and 72 as described above, the inner and outer closing plates 71 and 72 are attached to the opening 31a of the inner wall 31 and the opening 32a of the outer wall 32 in the upper main body 2, respectively. And fix with screws. Then, the cylindrical body 75 is attached to the inner and outer closing plates 71 and 72 so that the respective through holes communicate with each other, thereby forming the through holes 76 penetrating. Thereafter, from the inside of the test chamber 35, the gap with the opening 31 a is filled with the sealing agent 77 for all the inner closing plates 71. In this manner, the constant temperature and humidity chamber 1 in which the conduction hole 76 is formed at a desired position is completed.

  Even in the thermo-hygrostat 1 according to the second embodiment, the conduction hole 76 can be formed through the middle of the assembly of the upper body 2 or after the assembly is completed. Therefore, the delivery date of the constant temperature and humidity chamber 1 can be shortened.

(Other embodiments)
In each of the above-described embodiments, the present invention has been described by taking the constant temperature and humidity chamber 1 that keeps the temperature and humidity in the test chamber 35 constant. However, for example, in the constant temperature bath that keeps the temperature in the test chamber 35 constant. The present invention may be applied.

  Further, in each of the above-described embodiments, the conduction holes 76 can be formed on the left and right side surfaces 23, 24 and the upper surface 21 of the upper main body 2, but the conduction holes 76 need to be formed on all these surfaces. There is no. For example, the conduction holes 76 may be formed only on both the left and right side surfaces, only the left and right side surfaces, only the upper surface, and only the upper surface and either the left or right side surface.

  In addition, the internal structure including the refrigerator 5 of the constant temperature and humidity chamber 1 is an example, and is not limited to the above embodiment. An appropriate configuration can be adopted as the internal configuration of the constant temperature and humidity chamber 1.

  Further, in each of the above-described embodiments, the screwing is adopted as a method for attaching the closing plate (closing unit 7), but the present invention is not limited to this. As long as the closing plate (closing unit 7) can be detachably fixed, various known methods can be employed.

  As described above, the present invention can start the production without setting the position of the conduction hole in advance, and accordingly, the delivery time can be shortened. It is useful for tanks and temperature and humidity chambers.

It is a perspective view which shows the whole constant temperature and humidity chamber which concerns on embodiment. It is a perspective view which shows the whole constant temperature and humidity chamber which concerns on embodiment. It is the schematic which shows the internal structure of a constant temperature and humidity chamber. It is a perspective view which shows the outer wall side of the obstruction | occlusion unit. It is a perspective view which shows the inner wall side of an obstruction | occlusion unit. It is a perspective view which shows the outer wall side of the obstruction | occlusion unit which formed the conduction | electrical_connection hole. It is a perspective view which shows the inner-wall side of the obstruction | occlusion unit which formed the conduction | electrical_connection hole. It is a perspective sectional view of a constant temperature and humidity chamber. It is IX-IX sectional drawing of FIG. It is sectional drawing in the constant temperature and humidity chamber which concerns on Embodiment 2 (corresponding figure of FIG. 9).

Explanation of symbols

1 constant temperature and humidity chamber 2 upper body 21 upper surface 23 left side 24 right side 31 inner wall 31a opening 32 outer wall 32a opening 33 heat insulating material 35 test chamber 71 inner closing plate
72 Outer closing plate
76 Conduction hole

Claims (3)

A constant temperature bath having a test chamber in which a specimen is accommodated and at least one conduction hole for communicating the inside and outside of the test chamber, and maintaining the test chamber at least at a predetermined temperature;
The test chamber is formed by a double wall structure including an inner wall and an outer wall facing each other at a predetermined interval in the thickness direction, and a heat insulating material between the inner and outer walls, and the test chamber is formed by the inner wall. It has a compartmented body,
Each of the inner wall and the outer wall constituting at least one surface of the box-shaped main body has an opening in which a predetermined portion is set as a portion where the conduction hole can be formed, and a peripheral edge of the opening so as to close the opening And a closing plate detachably attached to the part,
The conduction hole is a thermostatic bath formed so as to penetrate through the inner wall and the outer wall blocking plate. In the thermostat according to claim 1,
The closing plate of the outer wall and the closing plate of the inner wall constitute a unit by being connected to each other in a state in which a heat insulating material is filled between both closing plates, and the unit can be attached to and detached from the main body. A thermostatic chamber attached to the. A test chamber in which a specimen is accommodated, and at least one conduction hole that communicates the inside and outside of the test chamber, and a method for producing a thermostatic bath that maintains at least a predetermined temperature in the test chamber,
Assembling a substantially rectangular box-shaped inner tub by fixing a plurality of wall members to each other, and at least one of the plurality of wall members has an opening in which a predetermined part can be a portion where the conduction hole can be formed. And a specific wall member configured to include a closing plate that is detachably attached to the peripheral edge of the opening so as to close the opening.
Attaching a heat insulating material to the outer periphery of the inner tank;
Assembling a substantially rectangular box-shaped exterior by fixing a plurality of wall members to each other so as to surround the outer periphery of the heat insulating material, and a wall member disposed relative to the specific wall member of the inner casing, A step of forming the specific wall member including an opening and a blocking plate;
Removing each of the blocking plates of the specific wall member facing each other in the inner casing and the exterior,
Forming a through hole in each of the removed blocking plates; and
A thermostatic bath including a step of forming the through hole in which the through holes communicate with each other by attaching the closing plate in which the through holes are formed to the peripheral portions of the openings of the inner tank and the exterior. Manufacturing method.

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