JP2740387B2 - Environmental test equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an environmental test apparatus,
Particularly, for example, an environmental test apparatus suitable for use in tests of performance and strength against environmental changes, such as constant temperature and humidity tests, rapid temperature cycle tests, and thermal shock tests of electrical and electronic devices, their components, and various materials. It is about.

[0002]

2. Description of the Related Art Conventionally, electric and electronic devices, their components,
In order to test the test object such as various materials in accordance with the environment, a constant temperature and humidity test machine for examining heat resistance and moisture resistance, and a rapid temperature cycle test machine capable of giving a temperature change in a short time. And a thermal shock tester capable of giving a temperature change in a very short time.

[0003] A constant temperature / humidity tester generally includes a test tank provided with a heat exchanger for changing the temperature in the tank, a heater, and a humidifier for changing the humidity. One or more DUTs (samples) are placed in the test chamber, and the temperature and humidity are changed relatively slowly in a predetermined temperature and humidity range, so that the heat resistance of the DUT is improved. This test is for moisture resistance.

The rapid temperature cycle tester has the same structure as the above constant temperature / humidity tester, but changes the cooling and heating capacities to rapidly raise and lower the temperature between two predetermined temperatures. Then, the heat resistance of the test object is tested.

[0005] A thermal shock tester generally has a high-temperature heat storage tank (hereinafter referred to as a high-temperature tank) and a low-temperature heat storage tank (hereinafter referred to as a low-temperature tank) adjacent to one test tank, and is provided between the two tanks and the test tank. When the test tank is connected to a high-temperature tank with the damper open and a high-temperature tank is provided, an openable and closable damper is provided. It has become hot. By operating these dampers in a very short time, the temperature of one or more test objects contained in the test tank is changed within a very short time, and the test It can test the heat resistance of the body (so-called heat shock test).

[0006]

In recent years, in response to demands for higher performance and higher quality of electric and electronic devices and their components, various materials, etc., there has been a demand for increasing the capacity of environmental test equipment and conducting various tests. Are increasing.

On the other hand, since the test tank is surrounded on all sides by walls that are sufficiently insulated, in order to rapidly change the temperature inside the tank, the heat capacity of these four peripheral walls (insulated side walls) must be rapidly increased. It has to be removed, which requires a much larger amount of heat than that required to change the temperature of the device under test, which has been a problem with the demand for increased capacity of the environmental test equipment. Further, as the types of tests increase, test devices adapted to the respective types are required, and the number of test devices increases, and there is a problem that excessive electric equipment is required in combination with the above-mentioned demand for increased capacity.

The present invention has been made in order to solve the above-mentioned problems of the prior art. By changing the structure in a test tank, the heat capacity of the heat insulating side wall can be reduced, and the heating heater, refrigerator, etc. Reduce the capacity of heat source equipment,
In addition to saving space and energy ,
It is an object of the present invention to provide an environmental test apparatus that can be used efficiently as a multipurpose test apparatus capable of simultaneously performing two types of tests on a device under test.

Another object of the present invention is to provide a separate spot heating and cooling source by utilizing a space in a high temperature section and a low temperature section of a test tank, and to apply a local temperature shock to a test object. It is an object of the present invention to provide an environmental test device that enables the above.

[0010]

To achieve the above object, according to the Invention The, configuration of the environment test apparatus according to the present invention, a test chamber for storing the test object, the high-temperature portion having a heat source device, respectively and the low-temperature portion provided a heat-insulating wall for partitioning the bets, the heat insulating wall, comprising comprising means for enabling rotation of said test chamber center as a fulcrum
In an environmental test apparatus, a heat insulating side wall constituting the test tank
And the heat insulating wall rotating in the test tank.
The rotatable insulating wall shall be in contact with each other via a step
The test object can be attached so as to penetrate this heat insulating wall.
An opening is provided .

In order to achieve the above and other objects, an environmental test apparatus according to the present invention includes a rotatable heat insulating wall provided with a holder capable of holding a DUT, and a space in a test tank. A local heat source device is provided in the area .

[0012]

The function of the above technical means is as follows. The DUT mounted on the holder of the rotating insulation wall in the test tank responds to the conditions of the set test conditions in the low-temperature section, high-temperature section, low-temperature constant-humidity section, and constant-temperature constant-humidity section in a very short time. , For a specified time.

In particular, through the opening of the rotating heat insulating wall, it is located on both sides of the rotating heat insulating wall (both parts of the low temperature constant humidity section and the constant temperature constant humidity section).
And equipped with a device under test, and the tests at the test condition set to each of which the can be carried out similar tests to driving as if two test device, in particular the test object
To conduct two types of tests simultaneously (bipolar test)
Can be.

[0014]

FIG. 1 shows a related art and an embodiment of the present invention.
This will be described with reference to FIG. FIG. 1 relates to the present invention.
Partial cross-sectional side view showing an example of an environmental test apparatus to be
FIG. 3 is a top view of FIG. 1 and FIG. 3 is a partially enlarged perspective view showing an example of a thermal shutdown of the low-temperature constant-humidity section and the constant-temperature constant-humidity section. Figure 1 or
The environmental test apparatus shown in FIG. 3 develops the present invention shown in FIG.
It is a related technology that forms the basis.

As shown in the figure, in the environmental test apparatus, a test tank surrounded by a heat insulating side wall 5 is formed by a rotary heat insulating wall 6 by a low temperature and constant humidity section 1 relating to a low temperature section and a constant temperature and constant humidity section 2 relating to a high temperature section. It is divided into and. The rotary heat insulating wall 6 is supported by a lower fulcrum 7 located at the center of the test tank, and is configured to be rotatable by a motor 8 and a motor shaft 19 provided at an upper portion. Here, it is natural that the fulcrum 7, the electric motor 8, and the electric motor shaft 19 constituting the support shaft and the driving means may be arranged upside down. Also, the rotary heat insulating wall 6 is
It is desirable to provide a stopper (not shown) in order to rotate and stop at the localization value.

A shelf 9 is built in the rotary heat insulating wall 6 as a holder on which a test object can be placed. In addition,
The holder may be a table. In addition, a packing 18 which acts as a heat-insulating sealing means is provided at a contact portion between the heat-insulating side wall 5 and the rotary heat-insulating wall 6 constituting the test tank. The heat-insulating sealing means may be a mechanism such as a labyrinth. Thereby, the contact between the heat insulating side wall 5 and the rotary heat insulating wall 6 is achieved.
Section is reliably protected and the test environment in the test chamber is reliable.
Is secured. 10 (general term for 10-1 and 10-2) is
10-1 is a door on the low temperature and humidity section 1 side, and 10-2 is a door on the constant temperature and humidity section 2 side.

The low-temperature constant-humidity section 1 and the constant-temperature constant-humidity section 2 are equipped with a low-temperature adjuster 3 and a high-temperature adjuster 4 for a heat source device for independently adjusting the temperature and humidity. FIG. 1 shows a cross section of the low-temperature regulator 3. The low-temperature refrigerator 15 forms a refrigeration cycle by connecting a compressor 31, a condenser 32, an expansion mechanism 33, and a heat exchanger 11 inside the tank by a refrigerant pipe, and performs a cooling function. In addition, it has a heat capacity sufficient to exhibit a refrigeration effect as required. Further, an electric heater 12, a fan 14, and a fan motor 13 necessary for adjusting the temperature are provided to adjust the temperature in the low-temperature constant humidity section 1. Although not shown, a humidifier is provided as needed to adjust the humidity.

The high temperature controller 4 is provided with a humidity control refrigerator 16 and a compressor 41 and a condenser 4 outside the tank.
2. A refrigeration cycle is configured by connecting the expansion mechanism 43 and a heat exchanger (not shown) in the tank with a refrigerant pipe,
The humidity in the constant temperature / humidity section 2 is adjusted. Although not shown, an electric heater is built-in, and the inside of the constant temperature / humidity section 2 (high temperature section)
Temperature is adjusted appropriately, and a humidifier is used to adjust the humidity.
These operations are performed by the fan 20 and the fan motor 17.
This is performed by flowing the gas in the thermo-hygrostat 2.

As described above, the low temperature constant humidity section 1 and the constant temperature constant humidity section 2
, Temperature and humidity can be controlled independently of each other, and can be used as a single testing machine, and a plurality of tests can be performed by one environmental test apparatus. Hereinafter, the operation of such an environmental test apparatus will be described. The test object is placed on the shelf 9 of the rotary heat insulating wall 6 from one of the doors 10-1 and 10-2 depending on the purpose of the test.

In each test such as a constant temperature / humidity test, a rapid temperature cycle test, and a thermal shock test,
Each part of the constant temperature and humidity section 2 is maintained at the temperature and humidity set by the test program, and the rotary insulation wall 6 on which the test object is mounted is rotated by 180 ° in accordance with the program, and the test is performed on the test object. A required test is carried out by placing the heat source device in one of the low-temperature constant-humidity section 1 and the constant-temperature constant-humidity section 2. After completing the necessary test, the door 10 of the test tank is opened and the test object is taken out.

In such an environmental test apparatus, when a temperature test is performed on a test object, the heat insulating wall 6 of the test tank (the heat insulating side) is used.
In the wall 5 surface and the rotating heat insulating wall 1 side), it is only providing a temperature change of only rotating the insulating wall 6 is one side of the insulating wall, the cross-sectional
The amount of heat required to change the temperature of the hot wall can be extremely reduced
This means that the capacity is smaller than that of a conventional testing machine with the same specifications.
Heat source equipment (electric heater, refrigeration equipment, etc.)
Shape, small capacity, and space saving can be achieved. Ma
In addition, the test time can be reduced and energy can be saved.
Wear.

[0022] Also, rotation since it carried the insulating wall 6 to the test object space is secured in the test chamber, the appropriate spatial region of the test vessel, for example a far local heating device and the spot of the infrared lamp or the like It is possible to provide a local cooling device such as an air cooler or the like to further perform local heating and cooling while performing a temperature and humidity test on the test object. In addition, the rotary insulation wall 6
The supporting shaft and the driving means for supporting and rotating the shaft are not limited to the present embodiment.

Next, based on the above-mentioned related technologies,
One embodiment of the developed invention will be described with reference to FIG.
You. FIG. 4 is a top view of the environmental test apparatus according to one embodiment of the present invention. In the figure, those of Figure 2 and the same reference numerals, related previous
The description is omitted because it is equivalent to the technology . Ma
The side view of the environmental test apparatus of this embodiment is the same as FIG.
is there. The environmental test apparatus of the embodiment shown in FIG.
Related technology where different as shown in 3, the rotational insulating wall 6
A, the test object 2 is inserted through the rotating heat insulating wall 6A.
3 is provided with an opening 6b to which the device 3 can be attached. Further, only one door 10A is provided, for example, on the constant temperature / humidity part 2 side.

The door 10A is opened and the device under test 23 is put into the test tank, and the test object 23 is inserted through the opening 6b of the rotary heat insulating wall 6A, and the door 10A is closed. A part of the test piece 23 is located on the constant temperature and humidity section 2 side, and the other part is located on the low temperature and humidity section 1, and heat shielding between the rotary heat insulating wall 6 </ b> A and the test piece 23 is performed. Thereafter, by performing a test on both the low-temperature constant-humidity section 1 and the constant-temperature constant-humidity section 2 according to the necessary programs, the bipolar test can be simultaneously performed on the device under test 23. After completing the necessary test, the door 10A of the test tank is opened and the test object is taken out.

According to the embodiment of FIG. 4, FIG.
In addition to the effect similar to that of the related art shown in FIG. 3, there is an effect unique to the present embodiment that two types of tests (bipolar test) can be performed on the device under test 23 at the same time.

[0026]

As described above in detail, according to the present invention, the heat capacity of the heat source equipment such as the heater and the refrigerator can be reduced by changing the structure in the test tank to reduce the heat capacity of the heat insulating side wall. reduces, miniaturization, space saving, with energy saving, in particular, simultaneous to the test object
In addition, it is possible to provide an environmental test apparatus that can be efficiently used as a multipurpose test apparatus capable of performing two types of tests.

Further, according to the present invention, the high temperature portion of the test tank,
By using the space in the low temperature area, separate spot heating and cooling sources can be provided to provide an environmental test apparatus that can apply a local temperature shock to the device under test.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view showing an example of an environmental test apparatus related to the present invention.

FIG. 2 is a top view of FIG.

FIG. 3 is a partially enlarged perspective view showing an example of thermal insulation of a low-temperature constant-humidity section and a constant-temperature constant-humidity section.

FIG. 4 is a top view of an environmental test apparatus according to one embodiment of the present invention.

[Explanation of symbols]

Reference numeral 1 denotes a low-temperature and constant-humidity section, 2 denotes a constant-temperature and constant-humidity section, 3 denotes a low-temperature adjuster, and 4
... High-temperature regulator, 5 ... Insulated side wall, 6 ... Rotated heat insulating wall, 6b ...
Opening, 7: Lower fulcrum, 8: Electric motor, 9: Shelf, 10, 10
-1, 10-2, 10A: door, 11: heat exchanger, 12:
Electric heaters, 13, 17 ... electric motors for fans, 14, 20
... Fan, 15 ... Refrigerator for low temperature, 16 ... Refrigerator for humidity adjustment, 18 ... Packing, 23 ... Test object, 31, 41 ...
Compressors, 32, 42 ... condensers, 33, 43 ... expansion mechanisms.

Claims (2)

(57) [Claims] 1. A test tank for storing a test object, respectively
In the environmental test apparatus comprising: a heat insulating wall provided with a heat source device, a heat insulating wall for dividing into a high temperature part and a low temperature part, and the heat insulating wall is provided with a means capable of rotating around the center of the test tank as a fulcrum. Heat insulation side wall and rotating inside the test tank
The heat insulation wall is in contact with the heat insulation wall through heat insulation sealing means.
So that the rotatable heat insulating wall penetrates the heat insulating wall.
An environmental test apparatus having an opening to which a test object can be attached . 2. A test object is held on a rotatable heat insulating wall.
In a test tank equipped with a rotatable heat insulating wall and a rotatable insulating wall,
The environment according to claim 1, further comprising a heat source device.
Testing equipment.