JPH09222389A - Inner vessel sealed type environment-testing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To promptly cool the inside of vessel without changing the atmosphere except for the temperature of an inner vessel by providing a forced air-cooled device along the outside wall of the inner vessel. SOLUTION: This device comprises an air blower mechanism 32 which, having a blower-sucker, is provided on the bottom surface of a constant-temperature device main body 20, and a forced air-cooled box 33 wherein its bottom end communicates with the air blower mechanism 32, its intermediate part contacts to one side of an inner vessel 20a, and its top part opens upward. If the inside of inner vessel is desired to-be-cooled promptly after the environment test with a sample is finished, a blower-sucker is driven by operating a switch. With this, the outside air of normal temperature is, through the air blower mechanism 32 provided on the bottom surface of the main body 20, introduced from an introduction opening 33, then, allowed to pass a cooling box 33, and after heat exchange with a fin, etc., is done, it is discharged from an discharge opening 33b at the top part of the cooling box 33 through a chimney 33C at the upper part of a casing. As a result, cooling of the inside of inner vessel 20a is accelerated, so that cooling time is significantly shortened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner tank closed type environmental tester for promoting cooling of a closed inner tank.

[0002]

2. Description of the Related Art In a conventional environmental tester for sealed inner tank, a cooling method by natural cooling is used because it is necessary to seal the inner tank, and no cooling mechanism is provided. However, with this conventional cooling method, it is difficult to cool, and it takes time to cool, so work efficiency is poor. Further, in the case of an incubator having an N ₂ substitution device, the high temperature atmosphere that promotes oxidation is also continued for a long time, so that the delay in cooling has a large effect on the sample. Therefore, in order to forcibly cool the inside of the incubator, there is no choice but to open the door, but this method destroys the non-oxidizing atmosphere created in the incubator having an N ₂ replacement device, and in the case of a clean oven There is a problem that the cleanliness inside the tank cannot be maintained.

[0003]

SUMMARY OF THE INVENTION Therefore, according to the present invention, an inner tank closed type environmental test capable of rapidly cooling the inside of the environmental tester without changing the atmosphere other than the temperature of the inner tank of the environmental tester. The purpose is to provide a container.

[0004]

In order to solve the above-mentioned problems, the invention of claim 1 is an environmental tester in which an inner tank is sealed, and a forced air cooling device is provided along the outer wall of the inner tank. Therefore, technical measures are taken to promote cooling inside the tank. Further, in the invention of claim 2, the forced air cooling device is formed of a box type having an opening on a surface contacting with an outer wall of the inner tank, and a casing provided with an inlet and an outlet, and provided in the casing. Therefore, the technical means is adopted, which is composed of a plurality of fins interposed in the passage of the cooling air to be introduced into the casing, and a blower connected to the inlet of the casing to introduce the outside air.

According to the present invention, in an environmental tester such as an incubator equipped with a gas replacement device such as an N ₂ replacement device or a clean oven, it is necessary to seal the inner tank with a forced air cooling device including a forced cooling box in the inner tank. It is possible to cool the inside of the tank by providing it with a cooling blower (blower) to blow air into the compulsory box to exchange heat with the inner tank immediately after completion of the high temperature test such as high temperature exposure.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment using a thermostatic chamber as an inner chamber closed type environmental tester of the present invention will be described below with reference to the drawings. Here, FIG. 1 is a front view of the inner vessel closed environment tester of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a plan view thereof, FIG. 4 is a rear view thereof, and FIG. FIG. 6 is a side view of a cooling box attached to the inner vessel closed type environmental tester shown in FIG. 6, and FIG. 6 is a sectional view of the cooling box.

[0007] In this inner vessel closed type environmental tester, a thermostat main body 20 in which a forced air cooling device is provided on the outer wall surface 20b of the inner vessel 20a in the casing of the tester and which is built in the housing, and supports this. It consists of a gantry 10. Incubator body 2
0 is a sheath heater 21 provided at the bottom for raising the inside of the inner tank 20a to a predetermined temperature, and a temperature controller 22 for controlling the inside of the inner tank to a predetermined temperature.
A fan 24 that is operated by a motor 23 to equalize the temperature in the inner tank, and an operation display plate 25 provided with a pressure gauge, a flow meter, a timer, an operation panel, a gas (nitrogen) flow meter, and the like. It is provided with a gas replacement device including a gas (nitrogen) exhaust hole 26 protruding and opening from the upper surface of the tank, a gas (nitrogen) inlet 27, a gas (nitrogen) pressure adjusting valve 28, and the like.

On the other hand, the forced air cooling device has an air blowing mechanism 32 provided on the bottom surface of the thermostat main body 20 and provided with a blower 31, a lower end thereof communicates with the air blowing mechanism 32, and an intermediate portion thereof contacts one side of the inner tank 20a. , And a forced cooling box 33 having a top opening upward. The forced cooling box 33 has a box shape having an opening on the surface that contacts the outer wall 20b of the inner tank 20a. In this embodiment, as shown in FIG. 5, one outer wall 20b of the inner tank 20a is almost covered. Has a rectangular cross section. An inlet 33a is formed in the center of the lower end of the forced cooling box 33, and an outlet 33b is formed in the center of the upper end.
A cooling air passage is formed between the inlet 33a and the outlet 33b, and in order to lengthen the cooling air passage, a large number of fins 34 alternately project from the left and right sides toward the inside of the passage. It is set up.

In the inner vessel closed type environmental tester having the above construction, when it is desired to immediately cool the inside of the inner vessel after the environmental test of the sample is completed, the switch is operated to drive the blower 31. As a result, the outside air at room temperature is introduced from the inlet 33a through the air blowing mechanism 32 on the bottom surface of the incubator body 20, and then the forced cooling box 33 is passed through the fin 3
After heat exchange with 4th grade, forced cooling box 33
It is discharged from the discharge port 33b at the top of the. In the illustrated example, an exhaust pipe 33c is provided on the upper part of the casing of the environmental tester, is connected to the exhaust port 33b, and exhausts to the outside. As a result, the cooling of the inside of the inner tank 20a is accelerated, and the cooling time can be significantly shortened (for example, about 1/3) as compared with the conventional natural cooling by the outside air.

The present invention is not limited to the above-mentioned embodiments, and needless to say, various design changes can be made without changing the gist of the present invention. For example, in the above-described embodiment, the example in which the forced cooling box 33 is provided only on one side of the constant temperature tank has been described, but naturally, the forced cooling box 33 is provided in contact with other outer walls of the constant temperature tank (including the side surface, the top surface and the bottom surface). May be. Further, the forced cooling box 33 may have a shape and a configuration in which the surface area for heat exchange is further increased as necessary.
Further, as the environmental tester, any environmental tester such as a constant temperature and constant humidity tank may be used in addition to the above constant temperature tank.

[0011]

As described in detail above, according to the inner tank closed type environmental tester of the present invention, cooling is performed as compared with the conventional natural cooling without changing the atmosphere other than the temperature inside the inner tank. The time can be significantly shortened.

[Brief description of drawings]

FIG. 1 is a front view of an inner tank closed type environmental tester according to an embodiment of the present invention.

FIG. 2 is a side view of the inner tank closed type environmental tester shown in FIG.

FIG. 3 is a plan view of the inner tank closed type environmental tester shown in FIG.

FIG. 4 is a rear view of the inner tank closed type environmental tester shown in FIG.

5 is a side view of a cooling box attached to the inner tank closed environment tester shown in FIG. 1. FIG.

FIG. 6 is a cross-sectional view of a cooling box attached to the inner tank closed environment tester shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Box-shaped mount, 20 ... Thermostat main body, 20a ... Inner tank 20b ... Outer wall 21 ... Sheath heater, 22 ... Temperature controller, 23 ... Motor, 24 ... Fan, 25 ... Operation display board, 26 ... Gas (nitrogen) exhaust hole , 27 ... Gas (nitrogen) inlet, 28 ... Gas (nitrogen) pressure adjusting valve, 31 ... Blower, 32 ... Blower mechanism, 33 ... Forced cooling box, 34 ... Fins.

Claims (3)

[Claims] 1. An environmental tester in which an inner tank is sealed,
An inner tank closed type environmental tester, characterized in that a forced air cooling device is provided along the outer wall of the inner tank to promote cooling of the inner tank. 2. The forced air cooling device is a box type having an opening on the surface that contacts the outer wall of the inner tank, and a casing having an inlet and an outlet, and a casing provided in the casing for introduction. 2. The inner vessel hermetically sealed environment according to claim 1, comprising a plurality of fins interposed in the cooling air passage and a blower connected to the inlet of the casing to introduce outside air. Tester. 3. The inner vessel closed type environmental tester according to claim 1, wherein the inner vessel closed type environmental tester comprises a thermostat having a nitrogen gas replacement device or a clean oven. .