JPH10253525A - Heat aging test device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the effective recovery of volatile constituents contained in air discharged from each cell, to effectively prevent volatile constituents from adhering to the inner walls of exhaust pipes, a flaw rate regulating means, etc., by the recovery of volatile constituents to obtain a favorable flow of exhaust air, and to enable aging tests to be performed in stable flow rates of air without affecting air displacement ratio, wind velocity, or temperature distribution. SOLUTION: An exhaust pipe (exhaust air passage) is connected via a one- touch joint 24 to an outlet 19 provided at the center of the upper surface of each tubular cell 10. The exhaust pipe is sequentially provided with an exhaust pipe insulating means, an exhaust air cooling means 27, a PTFE filter 28, an active carbon filter 29, a flow rate regulating means 30, and an exhaust pipe temperature-insulating means 26b from the side of a heating tank 1. The collecting pipe 31 of the exhaust pipe is connected to an exhaust pump via a buffer tank provided at the upper part of the heating tank 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a rubber test piece (vulcanized rubber), which is a main component of a product, which is affected by heat and oxygen.
The present invention relates to a heat aging test device for testing a phenomenon in which physical properties of rubber change (deteriorate) with time. More specifically, a vulcanized rubber physical test method (for example, JIS K6257, JIS K6301 and ISO 188)
When a rubber test piece is heated at a specified temperature for a specified time and tested using a cellular thermal aging test device specified in, the volatile components generated from the test piece are efficiently removed before flowing into the exhaust passage side. The present invention relates to a heat aging test apparatus capable of performing an aging test at a stable air flow rate even during long-time continuous operation.

[0002]

2. Description of the Related Art Conventionally, a device for testing a phenomenon in which a rubber test piece (vulcanized rubber), which is a main component of a product, changes (deteriorates) the physical properties of the rubber over time due to the influence of heat or oxygen, that is, heat aging. As a test device, for example, JIS K6257, JIS K6301
And ISO 188 regulate the type of device.

[0003] The types of devices regulated by the above JIS K6257, JIS K6301 and ISO 188 include a gear type heat aging test device, a test tube type heat aging test device, a cell type heat aging test device, a pressurized oxygen type heat aging test device. It is an aging test device. These heat aging test devices have characteristics as test methods, but have problems on the other hand.

[0004] For example, in a gear type thermal aging test apparatus, it is easily affected by volatile components (anti-aging agent, oil, wax, plasticizer, etc.) generated from each other, and in a test tube type thermal aging test apparatus. In addition, the replacement of air is not accurate, and the temperature of the air entering the tube is room temperature, and the measurement accuracy is poor. The test tube type heat aging test device, the cell type heat aging test device, and the pressurized oxygen type heat aging test device have poor workability in measurement. However, the conventional thermal aging test apparatus had some problems.

A so-called heat aging test apparatus is described in, for example, JI
The structure is roughly defined in S K6257, JIS K6301 and ISO 188.For example, in a cell type thermal aging test device,
Consisting of a cylindrical vertical cell and a heating device, the cell in which the specimen is to be placed must be at least 300 mm in height and the size of the specimen to be placed in the cell must be 10% or less of the cell volume. .

[0006] Further, the heating device surrounds the cell with a medium having good heat conductivity, and heats and regulates the temperature so that the temperature of the test piece in the cell is kept uniform within a specified temperature range of 70 ° C to 200 ° C. And a temperature measuring device. In addition, the air inside the cell must be gently replaced at a rate of 3 to 10 times per hour, so that the temperature of the incoming air must be within ± 1 ° C of the specified temperature at the cell inlet. .

[0007] Further, air passing through one cell must not enter another cell, and copper and a copper alloy must not be used for producing these tanks. The volume of the cell is generally defined by JIS K6257 and ISO 188, and the air replacement rate is a small amount even when used at a maximum of 10 times per hour. In order to solve the above-mentioned problem of the conventional heat aging test apparatus, the applicant of the present application has adopted JIS K6.
While observing the configuration of the cellular heat aging test device specified in 301, JIS K6257, and ISO 188, it can improve the measurement accuracy while improving the defects of the conventional cellular heat aging test device. Has filed a thermal aging test apparatus that can significantly improve the workability of measurement (Japanese Patent Application No. 4-28).
No. 8880, JP-A-6-138016, filing date, 1992 (1992)
2) October 27).

However, the applicant of the present invention has conducted a test using the above-mentioned heat aging test apparatus, and has found that there is a new problem. That is, in a thermal aging test using a cell-type oven, stability of air flow is a major factor affecting test accuracy. That is, the air exhausted from each cell contains volatile components generated from the test piece, such as an antioxidant, oil, wax, and plasticizer, and the volatile component generated from the test piece is usually at room temperature. Solid or liquid, for example during a heat aging test at 100 ° C.
It is discharged as a gas, and this volatile component adheres to the inner wall of the exhaust pipe connected to each cell and the flow control means, etc., and deteriorates the flow of exhaust air, adversely affecting the air replacement rate, wind speed, and temperature distribution. And deteriorated the accuracy of the deterioration test of the test piece.

As a method for purifying the dirt of the exhaust air, a method of providing a filter or the like in an exhaust pipe has been proposed. However, in a cell-type thermal aging test apparatus, since the cells are independent from each other, they contain volatile components. The contamination of air rarely affects each other's test pieces, and the inside of the cell is cleaned after each test, so that contamination is small. However, as described above, the volatile component generated from the test piece after the outlet of the cell adheres to the exhaust passage, the flow rate adjusting means, and the like as described above, and affects the accuracy of the deterioration test of the test piece. was there.

[0010]

In order to further solve the above-mentioned problems, the applicant of the present invention cools the air discharged from each cell to room temperature, so that the volatile components contained in the air are solid or Focusing on the fact that it can be recovered as a liquid, volatile components can be recovered by providing exhaust cooling means in the exhaust passage connected after the outlet of the cell, so that the inner wall of the exhaust pipe, the flow rate adjusting means, etc. A heat that can effectively prevent volatile components from adhering, improve the flow of exhaust air, and improve the accuracy of deterioration test of test pieces without affecting the air replacement rate, wind speed, and temperature distribution. Application for aging test device (Japanese Patent Application No. Hei 6-26265)
0, filing date: October 26, 1994, JP-A-8-122
No. 243).

However, in the heat aging test apparatus described above,
When increasing the number of cells or conducting long-term continuous operation experiments, the exhausted air was in a state of insufficient cooling, that is, it contained volatile components such as antioxidants, oils, waxes, and plasticizers in rubber. When the contaminated air is exhausted, it is confirmed that the pores of the pipes are clogged and the air flow for air replacement is reduced, and the conventional thermal aging test equipment has sufficient measures to stabilize the flow. Turned out not to have been taken.

The present invention has been devised in view of such a conventional problem. Even when the number of cells is increased or continuous operation is performed for a long time, volatilization contained in air discharged from each cell is considered. The components can be efficiently recovered, thereby effectively preventing the volatile components from adhering to the inner wall of the exhaust pipe, the flow rate adjusting means, and the like, improving the flow of the exhaust air, improving the air replacement rate, and the wind speed. , Without affecting the temperature distribution
It is an object of the present invention to provide a thermal aging test device capable of performing an aging test at a stable air flow rate.

[0013]

According to the present invention, in order to achieve the above object, an exhaust pipe warming means is provided on an exhaust pipe outside a heating tank.
Exhaust cooling means, wherein the exhaust cooling means is provided with a plurality of exhaust air circulation holes in a box-shaped casing provided with an inlet and an outlet of an exhaust passage provided with the exhaust pipe heat retaining means. A plurality of cooling chambers are defined and formed through a plurality of highly conductive metal plates, a metal filter is detachably mounted in each of the cooling chambers, and a forced cooling means is provided outside the casing. Is what you do.

[0014] Further, in the exhaust passage connecting the exhaust port outside the heating tank and the exhaust means, from the heating tank side, an exhaust pipe warming means, an exhaust cooling means, a Teflon filter, an activated carbon filter, a flow rate adjusting means, and an exhaust pipe. The gist is that the heat retaining means is sequentially provided. As the metal plate having high thermal conductivity,
A lightweight and inexpensive aluminum plate is used, and a plurality of exhaust air circulation holes are formed in the aluminum plate with a phase difference.

Further, the metal filter may be constructed by collecting and collecting string-shaped stainless steel scraps, or a plurality of metal rods or a plurality of wire nets may be arranged in parallel in a cooling chamber. Further, the forced cooling means provided outside the casing includes a cooling fin provided on an outer wall surface of the casing, and a cooling fan for blowing cooling air to the outer wall surface of the casing and the cooling fin.

The present invention is configured as described above, and the exhaust air is in a state of insufficient cooling, that is, contaminated air containing volatile components such as an antioxidant, oil, wax, and plasticizer in rubber is exhausted. When this is done, the piping between the heating tank and the exhaust cooling means is shortened and a tape heater etc. And a plurality of cooling chambers are formed in a box-shaped casing through a plurality of highly heat-conductive metal plates provided with a plurality of exhaust air circulation holes as exhaust cooling means. However, by installing a metal filter in each of the cooling chambers in a detachable manner and providing forced cooling means outside the casing, the number of cells can be increased, and even when continuous operation is performed for a long time, the cells can be discharged from each cell. Included in the air Volatile components can be efficiently collected, thereby effectively preventing the volatile components from adhering to the inner wall of the exhaust pipe, the flow control means, and the like, improving the flow of the exhaust air, improving the air replacement rate, The aging test can be performed at a stable air flow rate without affecting wind speed and temperature distribution.

In addition, in the exhaust passage connecting the exhaust port outside the heating tank and the exhaust means, from the heating tank side, a pipe insulation means, an exhaust cooling means, a Teflon filter, an activated carbon filter, a flow control means, and an exhaust pipe insulation means. By sequentially providing the means, the volatile components contained in the air discharged from each cell can be recovered more efficiently.

[0018]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 is a partially cutaway front view of a heat aging test device embodying the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a schematic configuration diagram of the heat aging test device. An opening / closing door 1a is provided on one side of a heating tank 1 having a box-shaped cross section and having a predetermined space volume, and a plurality of cell support holes 2 are provided at substantially the center in the heating tank 1. Through a partition plate 3, a cell heating tank 4 is formed at an upper part and a replacement air heating tank 5 is formed at an upper part and a lower part.

On the side of the cell heating tank 4 and the replacement air heating tank 5, a compartment 8 containing a heater 6 as a heating means and a circulating blower 7 for stirring the air in the tank is provided. 9, the heated exhaust air A in the cell heating tank 4 and the replacement air heating tank 5 circulates in the direction of the arrow, and is heated in the replacement air heating tank 5. A portion of A flows into a plurality (six in this embodiment) of cylindrical cells 10 erected on the cell support holes 2 of the partition plate 3.

As shown in FIG. 2, an outside air intake means 11 is connected to the side of the compartment 8, and the outside air intake means 11 includes an air cleaning filter 12, which cleans outside air X taken from outside the tank. The outside air X, which is constituted by the supply pipe 13 and the preheating device 14 and is taken in from the outside of the tank,
It is configured to be once taken into the compartment 8 containing the heater 6 and the circulating blower 7 and then sent into the replacement air heating tank 5.

That is, the air sent into the replacement air heating tank 5 needs to be cleaned so as not to adversely affect the measurement accuracy. The vaporized additives, decomposition products, etc. are purified through a plurality of layers of air purifying filters 12 composed of a physical adsorbent, a neutralizing absorbent, a catalytic absorbent, etc., and the purified air is supplied to the circulation blower 7. After being sucked into the compartment 8 and further adjusted to the set temperature by the heater 6,
It is sent into the replacement air heating tank 5.

Further, by installing a preheating device 14 behind the air purifying filter 12, the outside air X taken in from the outside of the tank is preheat-adjusted to a predetermined temperature, and the preheated air is replaced with a replacement air heating tank. By sending it into the chamber 5, the temperature accuracy in the tank can be further improved. The air sent into the replacement air heating tank 5 is the air in which the outside air X has passed through the air purification filter 12, the oxygen or nitrogen blended air which has passed through the oxygen supply valve 18a or the nitrogen supply valve 18b, and the air amount adjusting section 18c. Can be sent through.

As shown in FIG. 3, an air collection pipe 15 in the tank is connected to the replacement air heating tank 5, and an opening / closing valve 16 and a filter 17 are provided in the middle of the air collection pipe 15 in the tank. Are provided so that the oxygen concentration in the cell heating tank 4 and the replacement air heating tank 5 is always measured to be a constant reference. The air is exhausted out of the tank by an exhaust pipe 15a.

That is, according to the present invention, the oxygen concentration meter 1 having the heating tank 1 provided with the oxygen supply valve 18a, the nitrogen supply valve 18b and the air amount adjusting section 18c as the oxygen concentration adjusting means.
8 and exhaust cooling means 27 described later are provided,
Automatic mixing of air A and nitrogen gas by solenoid valve
This is a heat aging test device that is capable of performing a heat aging test at a set low oxygen concentration (0 to 21%) by turning off the N and OFF. A heat aging test at an oxygen concentration (21 to 70%) can be performed.

Next, as shown in FIG. 1, a plurality of cylindrical cells 10 which are detachably engaged with the cell support holes 2 formed in the partition plate 3 and are erected are made of glass or stainless steel. Formed in a cylindrical shape with a corrosion-resistant material of
a is open, and an exhaust port 19 is provided at the center of the upper surface 10b. A door 20 for opening and closing the test piece W into and out of the cell 10 is attached to the side surface of the cell 10 so as to be openable and closable, and a predetermined number of test pieces W are respectively placed on the inner wall surface of the door 20 or inside the cell 10. Suspension means 2 such as hanging pins
1 is provided.

At the symmetrical position on the upper side surface of the cell 10, a hook 23 for supporting the cell 10 on the rack 22 is attached. An exhaust pipe 25 (exhaust passage) is connected to an exhaust port 19 provided at the center of the upper surface of each of the cylindrical cells 10 via a one-touch joint 24 as shown in FIG. From the hot tub 1 side, the exhaust pipe warming means 26a, the exhaust cooling means 27, the Teflon filter 28,
An activated carbon filter 29, a flow rate adjusting means 30, and an exhaust pipe warming means 26b are sequentially provided. The collecting pipe 31 of the exhaust pipe 25 is evacuated through buffer tanks 32a, 32b provided above the heating tank 1. The buffer tanks 32a and 32b are connected to a pump 33 to buffer the pulsation of the exhaust pump 33 from being transmitted to the flow rate adjusting means 30, and to discharge the purified air to the outside of the tank sequentially. Have been.

The exhaust pipe 25 between the exhaust cooling means 27 protruding from the upper part of the heating tank 1 is formed shorter than the conventional exhaust pipe 25, and the exhaust pipe 25 is provided with volatilization from the test piece W. In order to effectively prevent the components from condensing or adhering to the inner wall surface of the exhaust pipe 25, exhaust pipe warming means 26a such as a band heater is wound. The exhaust cooling means 27
Indicates that each cell 1 during the heat aging test, as shown in FIGS.
Volatile components (anti-aging agent, oil, wax, plasticizer, etc.) generated from test pieces contained in air exhausted from 0
Is recovered by cooling the exhaust air, and is configured as follows.

That is, as shown in FIGS. 4 and 5, the exhaust cooling means 27 provided in the exhaust pipe 25 of each cell 10 is provided with an inlet 34a and an outlet 34b of the exhaust pipe 25 provided with the exhaust pipe warming means 26. Via a plurality of metal plates 37 (for example, a lightweight and inexpensive aluminum plate or the like) having high heat conductivity and having a plurality of exhaust air circulation holes 36 provided in a box-shaped casing 35 having To form a plurality of cooling chambers 38, and a metal filter 39 is provided in each of the cooling chambers 38.
Is detachably mounted, and outside the casing 35,
A forced cooling means 40 is provided.

The aluminum plate used as the metal plate 37 having high thermal conductivity has a plurality of exhaust air circulation holes 36.
Is formed so as to have a phase difference in order to change the flow path inside the cooling chamber 38, and as the metal filter 39, as shown in FIG. Alternatively, it is also possible to arrange a plurality of metal rods or a plurality of wire nets in parallel in the cooling chamber 38.

The forced cooling means 40 provided outside the casing 35 includes a cooling fin 42 provided on the outer wall surface of the casing, a cooling fin 42 provided on the outer wall surface of the casing and the cooling fin 42.
And a cooling fan 43 for sending cooling air (forced air cooling) to the cooling fan. In this way, by providing the forced cooling means 40 in the exhaust cooling means 27, the cooling efficiency is further increased, the volatile components from the test piece W are completely condensed by the metal filter 39, and the flow rate adjustment as the downstream of the exhaust gas is performed. This is to prevent adhesion to the means 30.

Volatile components from the test piece W that could not be completely condensed by the exhaust cooling means 27 are removed from the Teflon filter 2.
8 and an activated carbon filter 29 as shown in FIG. As shown in FIG. 6, the activated carbon filter 29 accommodates and encloses a commercially available activated carbon 45 in a bottomed activated carbon box 44, and an exhaust inlet 46 a provided at a lower portion of the activated carbon box 44. From the test piece W, which has not been completely condensed by the exhaust cooling means 27 and the Teflon filter 28, is adsorbed by the activated carbon 45 and discharged from the outlet 46b to the flow rate adjusting means 30. .

As shown in FIG. 7, the flow rate adjusting means 30 is composed of a flow meter 47 and a needle part 48, and an exhaust pipe 49 connected to the needle part 48 is provided with exhaust pipe warming means 26b such as a band heater. Is wound to prevent the volatile components from the test piece W from adhering to the needle portion 48. The embodiment of the present invention is configured as described above. As a test method, a cell 10 accommodating a plurality of test pieces W so as to be 10% or less of the volume in the cell 10 is added via a rack 22 to the cell. The test is set in the warm bath 4, the door 1a is closed, and the test is started.

The air sent into the replacement air heating tank 5 is purified through an air purifying filter 12, and the purified air is preheated by a preheating device 14, and then is heated to a set temperature by the heater 6. After being adjusted, it is sent into the replacement air heating tank 5. The supplied heated air circulates in the direction of the arrow, and a part of the heated air is supplied to the cylindrical cell 10 erected on the cell supporting hole 2 of the partition plate 3.
To heat the plurality of test pieces W in the cell 10 at a specified temperature for a specified time.

The temperature of the heater 6 is controlled so that the temperature of the air flowing into the cell 10 becomes ± 1 ° C. of a specified temperature at the inlet of the cell 10. On the other hand, cell 1
0 itself is controlled while being heated to a specified temperature by the heated air circulating in the cell heating tank 4. Cell 10
The air inside is 3 to 10 per hour depending on the number of test pieces W.
The operations of the needle part 42 and the flow meter 29 are set so that the needle parts 42 and the flow meter 29 are gradually replaced at the rate of the number of times.

Exhaust air A exhausted from each of the cells 10
x is heated while passing through the short exhaust pipe 25 around which the exhaust pipe warming means 26a such as a band heater is wound, so that the volatile components from the test piece W do not condense or adhere to the inner wall surface of the exhaust pipe 25. And flows into each exhaust cooling means 27. The exhaust air flowing into the casing 35 of each exhaust cooling means 27 is forcibly cooled by the forced cooling means 40 and the like while flowing through the cooling chamber 37, the metal filter 39, and the circulation holes 36 of the metal plate 37, and the exhaust air is exhausted. The volatile components contained in the air adhere to the metal filter 39, the metal plate 37, and the like, and the volatile components are collected together with the metal filter 39.

As described above, this recovery method is as follows.
This is performed by opening the door of the casing 35 of the exhaust cooling means 27 and replacing or cleaning the metal filter 39.
Volatile components that could not be recovered by the exhaust cooling means 27 are adsorbed by a Teflon filter 28 and an activated carbon filter 29 provided on the downstream side, so that the volatile components adhere to the flow rate adjusting means 30. Is prevented. At the same time, the exhaust pipe 49 connected to the needle portion 48 is wrapped around the exhaust pipe warming means 26b such as a band heater and heated to prevent the volatile components from the test piece W from further adhering to the needle portion 48. doing.

As described above, the volatile components are measured by the flow meter 47.
And the recovery in the previous step of the needle portion 48, it is possible to effectively prevent volatile components from adhering to the inner wall of the exhaust pipe 25, the flow meter 47, the flow rate adjusting means 30 of the needle portion 48, and the like. It is intended to improve the flow of air and to improve the accuracy of the deterioration test of the test piece without affecting the air exchange rate, wind speed and temperature distribution.

That is, the temperature distribution, the wind speed, and the air exchange rate in the cell 10 can be accurately performed by periodically replacing or cleaning the internal components mainly by using the exhaust cooling means 27. is there. For example, in the actual measurement value,
Temperature distribution ± 0.5 ° C, wind speed ± 0.1m / sec, replacement rate ± 1 time / 1
Can be performed in a short time (standard ± 1 ° C, ± 0.1m / sec, 3
-10 times / 1 hour).

The air exhausted from the flow meter 47 is
It is sent to the buffer tanks 32 a and 32 b via the collecting pipe 31 and is sequentially discharged to the outside of the tank via the exhaust pump 33. At this time, the pulsation of the exhaust pump 33 is transmitted to the flow rate adjusting means 30. The buffer tanks 32a and 32b
Buffer. When the heating test of the test piece W is completed, the door 1a is opened, the one-touch joint 24 supporting the plurality of cells 10 is removed, and the cell 10 is opened.
At the same time, the door 20 of the cell 10 is opened, the test piece W is taken out, and the test is completed.

The heated test piece W taken out is to be tested for various properties such as tensile strength, elongation at break, tensile stress, hardness and the like by using another testing machine. Performing the test by the method as described above can improve the measurement accuracy and perform the measurement work efficiently.

[0041]

According to the present invention, the exhaust pipe keeping means and the exhaust cooling means are provided in the exhaust pipe outside the heating tank as described above, and the exhaust cooling means comprises the exhaust pipe keeping means. In a box-shaped casing having an inlet and an outlet of an exhaust passage, a plurality of cooling chambers are defined and formed through a plurality of highly thermally conductive metal plates provided with a plurality of exhaust air circulation holes. Since a metal filter is detachably mounted in each of the cooling chambers and a forced cooling means is provided outside the casing, even in the case of continuous operation for a long time, the volatilization contained in the air discharged from each cell is reduced. The components can be efficiently recovered, thereby effectively preventing the volatile components from adhering to the inner wall of the exhaust pipe, the flow rate adjusting means, and the like, improving the flow of the exhaust air, improving the air replacement rate, and the wind speed. Stable sky without affecting the temperature distribution There is an effect that it is possible to carry out the aging test at a flow rate.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a heat aging test apparatus embodying the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a schematic configuration diagram of a heat aging test device embodying the present invention.

FIG. 4 is an exploded perspective view of an exhaust cooling unit.

FIG. 5 is a perspective view of a metal plate that partitions a cooling chamber of the exhaust cooling unit.

FIG. 6 is an exploded perspective view of the activated carbon filter.

FIG. 7 is a perspective view of a flow rate adjusting means and a pipe warming means.

[Explanation of symbols]

Reference Signs List 1 heating tank 2 cell support hole 3 partition plate 4 cell heating tank 5 replacement air heating tank 10 cell 10a bottom of cell 11 outside air intake means 18 oxygen concentration meter 18a oxygen supply valve 18b oxygen concentration control unit 19 exhaust port 25 Exhaust passages 26a, 26b Pipe insulation means 27 Exhaust cooling means 28 Teflon filter 29 Activated carbon filter 30 Flow rate adjusting means 31 Collecting pipe 32a, 32b Buffer tank 33 Exhaust pump 34a Inlet 34a Outlet 35 Casing 36 Flow hole 37 Metal plate 38 Cooling chamber 39 Metal filter 40 Forced cooling means 42 Cooling fin 43 Cooling fan 44 Activated carbon box 45 Activated carbon 46a Exhaust inlet 46b Exhaust outlet 47 Flow meter 48 Needle part 49 Exhaust pipe W Test piece A Air

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Kenpachi Mihashi 2-1 Oiwake, Hiratsuka-shi, Kanagawa Prefecture Inside the Hiratsuka Factory of Yokohama Rubber Co., Ltd. (72) Inventor Oo Suga 5-4-114 Shinjuku, Shinjuku-ku, Tokyo Suga Test Machine Co., Ltd.

Claims (6)

[Claims] 1. A plurality of cylindrical cells in which a plurality of test pieces are suspended in a heating tank, and an exhaust port provided at the center of the upper surface of each cell is connected to an exhaust means. In a heat aging test apparatus comprising an exhaust cooling means for cooling air exhausted from each cell, a filter, and a flow rate adjusting means in the middle of an exhaust pipe outside the heating tank, the exhaust gas outside the heating tank is provided. In the pipe, exhaust pipe warming means and exhaust cooling means are provided, and the exhaust cooling means is provided in a box-shaped casing having an inlet and an outlet of an exhaust passage provided with the exhaust pipe warming means, A plurality of cooling chambers are partitioned and formed through a plurality of metal plates having high heat conductivity provided with a plurality of exhaust air circulation holes, and a metal filter is detachably mounted in each of the cooling chambers, and is provided outside the casing. A heat aging test device comprising forced cooling means. 2. A plurality of cylindrical cells in which a plurality of test pieces are suspended in a heating tank, and an exhaust port provided at the center of the upper surface of each cell is connected to an exhaust means. In a heat aging test apparatus comprising an exhaust cooling means for cooling air exhausted from each cell, a filter, and a flow rate adjusting means in the middle of an exhaust pipe outside the heating tank, the exhaust gas outside the heating tank is provided. The exhaust pipe connecting the port and the exhaust means is provided with an exhaust pipe warming means, an exhaust cooling means, a Teflon filter, an activated carbon filter, a flow rate adjusting means, and an exhaust pipe warming means sequentially from the heating tank side. Heat aging test equipment. 3. An aluminum plate is used as said metal plate having high thermal conductivity, and a plurality of exhaust air circulation holes are formed in said aluminum plate with a phase difference.
Or the heat aging test apparatus according to claim 2. 4. The heat aging test apparatus according to claim 1, wherein the metal filter is formed by collecting string-shaped stainless steel scraps. 5. The heat aging according to claim 1, wherein a plurality of metal rods or a plurality of wire meshes are arranged in a cooling chamber in parallel as the metal filter. Testing equipment. 6. A cooling fin provided on an outer wall surface of the casing as a forced cooling means provided outside the casing,
A cooling fan for sending cooling air to the casing outer wall surface and the cooling fins.
The heat aging test device according to claim 4.