JPH05215658A - Environment testing device - Google Patents

Abstract

PURPOSE:To obtain an environment testing device which is reduced in size, occupying space, and energy consumption and, at the same time, can be efficiently used as a multipurpose testing device which can perform two or more kinds of tests with one set by reducing the heat capacity of its heat insulating side wall so that the capacities of the heat source devices of a heater, refrigerator, etc., can be reduced. CONSTITUTION:A rotary heat insulating wall 6 is provided for dividing a testing tank for housing an object to be tested into a low- and high-temperature constant humidity sections 1 and 2 respectively provided with a low- and high- temperature adjusting machines 3 and 4. In addition a fulcrum and a motor are provided for rotating the wall 6 around the center of the testing tank by at least 180 deg..

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, electric and electronic devices, their parts,
To test DUTs such as various materials in accordance with the environment, a constant temperature and humidity tester for investigating heat resistance and humidity resistance, and a rapid temperature cycle tester that can change the temperature in a short time are used. , The thermal shock tester capable of changing the temperature in a very short time, and the different devices were used.

A constant temperature and constant humidity tester generally comprises, in one test tank, a heat exchanger for changing the temperature in the tank, a heater and a humidifier for changing the humidity. One or more test objects (samples) are housed in the test tank, and the heat and humidity of the test object are changed by relatively slowly changing the temperature and humidity within a predetermined temperature and humidity range. The humidity resistance is tested.

The rapid temperature cycle tester has a structure similar to that of the constant temperature and constant humidity tester described above, but the temperature is rapidly raised and lowered between two predetermined temperatures by changing the cooling and heating capacities. Then, the heat resistance of the test object is tested.

The thermal shock tester is generally provided with 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 between the two tanks and the test tank. A damper that can be opened and closed is provided, and when the test tank is open and connected to the high temperature tank, the inside of the tank is in a high temperature state, and when the test tank is open and the damper is connected to the high temperature tank, the inside of the tank is It has become hot. However, by operating these dampers in an extremely short time, the temperature of one or more DUTs stored in the test tank is changed within an extremely short time, and the test subject to thermal strain etc. The heat resistance of the body can be tested (so-called heat shock test).

[0006]

In recent years, in response to demands for high performance and quality of electric and electronic devices and their parts, various materials, etc., demands for increasing the capacity of environmental test equipment and conducting various tests Is increasing.

On the other hand, since the test tank is surrounded by four well-insulated walls, in order to rapidly change the temperature inside the test tank, the heat capacity of these four peripheral walls (insulated side walls) must be rapidly increased. It is necessary to remove it, and this requires a heat amount much larger than the heat amount required to change the temperature of the DUT, which has been a problem for increasing the capacity of the environmental test equipment. Further, as the types of tests increase, there is a problem that a test device adapted to each type is required, the number of test devices is increased, and an excessive electric facility is required in combination with the demand for increasing the capacity.

The present invention has been made to solve the above-mentioned problems of the prior art. By changing the structure in the test tank, the heat capacity of the heat insulating side wall can be reduced, and the heater, refrigerator, etc. Reduces the capacity of heat source equipment, downsizing,
It is an object of the present invention to provide an environmental test device that can save space and save energy and can be efficiently used as a multipurpose test device capable of performing two or more types of tests with one device. ..

Another object of the present invention is to provide separate spot heating and cooling sources by utilizing the space of the high temperature part and the low temperature part of the test tank so as to give a local temperature shock to the DUT. An object of the present invention is to provide an environmental test device that enables the above.

[0010]

In order to achieve the above object, the most basic constitution of the environmental test apparatus according to the present invention is that the test tank for storing the test object is divided into a high temperature part and a low temperature part. A heat insulating wall is provided, and means for making the heat insulating wall rotatable around the center of the test tank as a fulcrum is provided.
More specifically, a heat insulating wall for partitioning the test tank for storing the device under test into a low temperature constant temperature unit and a constant temperature constant temperature unit having a high temperature adjusting unit is provided, and the heat insulating wall is It is provided with a support shaft and a drive means for rotating the test tank center by at least 180 ° as a fulcrum.

More specifically, the heat insulation sealing means is provided at the contact portion between the heat insulation side wall forming the test tank and the heat insulation wall rotating in the test tank. Also, on the rotatable insulation wall,
It is characterized in that it has a holding body on which a device under test can be placed.

Further, in order to achieve the above-mentioned other object, the environmental test apparatus according to the present invention comprises a rotatable heat insulating wall provided with a holding body on which an object to be tested can be placed, and the inside of the test tank. A local heat source device is provided in the space area.

[0013]

The function of the above technical means is as follows. Retainer of rotating insulation wall in test tank (shelf, table, etc.)
The test object mounted on the is stored in one of the low temperature and constant humidity section and the constant temperature and constant humidity section by rotating the rotating heat insulating wall according to the test procedure, and is set in the low temperature and constant humidity section and the constant temperature and constant humidity section. The test conditions are maintained for a very short time and maintained for a specified time.

At this time, the heat insulating wall 6 of the test tank (the heat insulating side wall 5)
Since only one of the surfaces and the rotating insulation wall (1 surface) changes temperature, the amount of heat required to change the temperature of the insulation wall can be extremely reduced, making it possible to use a conventional tester with the same specifications. On the other hand, a heat source device having a small capacity (electric heater, refrigerating device, etc.) can be adopted, and a small size, a small capacity, and a space saving can be achieved. In addition, the test time can be shortened and energy can be saved.

Depending on the contents of the test, the object to be tested is mounted on both sides of the rotating heat insulating wall (both the low temperature and constant humidity part and the constant temperature and constant humidity part), and the test is carried out under the set test conditions, as if It is possible to carry out the same test as when operating the test equipment of the table.

[0016]

Embodiments of the present invention will be described below with reference to FIGS. [Embodiment 1] FIG. 1 is a partial cross-sectional side view of an environmental test apparatus according to an embodiment of the present invention, FIG. 2 is a top view of FIG.
[Fig. 3] is a partially enlarged perspective view showing an embodiment of heat insulation of a low temperature and constant humidity part and a constant temperature and constant humidity part.

As shown in the figure, in the environment testing apparatus, the test tank surrounded by the heat insulating side wall 5 has a rotary heat insulating wall 6 to form a low temperature constant temperature part 1 related to a low temperature part and a constant temperature constant humidity part 2 related to a high temperature part. It is divided into and. The rotating 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 an electric motor 8 and an electric motor shaft 19 provided on the upper portion. Here, it goes without saying that the fulcrum 7, the electric motor 8 and the electric motor shaft 19 which constitute the supporting shaft and the driving means may be arranged upside down. In addition, the rotary insulation wall 6
It is desirable to provide a stopper (not shown) for rotating and stopping at the localization value.

On the rotary heat insulating wall 6, a shelf 9 is built in as a holding body on which an object to be tested can be placed. In addition,
The holder may be a table. In addition, a packing 18 having a heat insulating effect is provided as a heat insulating sealing means at a contact portion between the heat insulating side wall 5 and the rotary heat insulating wall 6 which constitute the test tank. The heat insulation sealing means may be a mechanism such as a labyrinth. Reference numeral 10 (a general term for 10-1 and 10-2) is a door for loading and unloading the DUT, and 10-1 is a low temperature and humidity unit 1
Side doors 10-2 are doors on the side of the constant temperature and constant humidity section 2.

The low temperature and constant humidity unit 1 and the constant temperature and constant humidity unit 2 are equipped with a low temperature adjuster 3 and a high temperature adjuster 4 which are heat source devices 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 the compressor 31, the condenser 32, the expansion mechanism 33 outside the tank, and the heat exchanger 11 inside the tank with a refrigerant pipe to perform a cooling function. At the same time, it has a sufficient heat capacity to exert the refrigerating effect according to the demand. Further, an electric heater 12, a fan 14, and a fan electric motor 13 necessary for temperature adjustment are provided to adjust the temperature inside the low temperature and humidity section 1. Although not shown, a humidifier is installed as necessary to adjust the humidity.

Further, the high temperature controller 4 is provided with a humidity adjusting refrigerator 16, and a compressor 41 and a condenser 4 outside the tank are provided.
2, the expansion mechanism 43, and a heat exchanger (not shown) in the tank are connected by a refrigerant pipe to form a refrigeration cycle,
The humidity in the constant temperature and constant humidity section 2 is adjusted. Although not shown, an electric heater is built in, and the inside of the constant temperature and constant humidity section 2 (high temperature section)
Keep the temperature properly and adjust the humidity by using a humidifier.
These operations are performed by the fan 20 and the fan motor 17
Is performed by causing the gas in the constant temperature and constant humidity section 2 to flow.

As described above, the low temperature and constant humidity section 1 and the constant temperature and constant humidity section 2
The temperature and humidity can be controlled independently of each other and can be used as an independent tester, and a plurality of tests can be performed by one environmental test device. Hereinafter, the operation of the environment test apparatus of this embodiment will be described. The object to be tested 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 of the constant temperature and constant humidity test, the rapid temperature cycle test, the thermal shock test, etc.
Each part of the constant temperature and constant humidity part 2 should be kept at the temperature and humidity set by the test program, and the rotating heat insulating wall 6 on which the test object is mounted should be rotated by 180 ° according to the program to perform the required test on the test object. The test is carried out by locating it in either the low temperature / humidity unit 1 or the constant temperature / humidity unit 2 and activating each heat source device described above. After the required test is completed, the door 10 of the test tank is opened and the device under test is taken out.

In the environment test apparatus of this embodiment, when the temperature test is performed on the object to be tested, it is only necessary to change the temperature of only the rotating heat insulating wall 6, which is one surface of the heat insulating wall. Since the amount of heat required for can be extremely reduced, it is only necessary to use a refrigerator with a small capacity in a test machine of the same specifications, and it is possible to reduce the capacity of electrical equipment and save energy in equipment.

Also, in this embodiment, the rotary heat insulating wall 6 is used.
A space can be secured in the test tank because the device under test can be mounted in the test tank, and a local heating device such as a far-infrared lamp or a local cooling device such as a spot-type cooler can be provided in an appropriate space area in the test tank. It is possible to perform local heating and cooling while performing a temperature and humidity test on the DUT. The support shaft and driving means for supporting and rotating the rotary heat insulating wall 6 are not limited to those in this embodiment.

[Embodiment 2] Next, FIG. 4 is a top view of an environmental test apparatus according to another embodiment of the present invention. In the figure, those having the same reference numerals as those in FIG. 2 are the same parts as those in the previous embodiment, and therefore their explanations are omitted. In the embodiment of FIG. 4, the rotary heat insulating wall 6A is provided with an opening 6b through which the test object 23 can be attached so as to penetrate the rotary heat insulating wall 6A. Further, the door 10A is provided, for example, only on the constant temperature and constant humidity section 2 side.

The door 10A is opened, the device under test 23 is placed in the test tank, the rotary insulating wall 6A is fitted through the opening 6b, and the door 10A is closed. A part of the DUT 23 is located on the constant temperature and constant humidity part 2 side, and the other part is located on the low temperature and constant humidity part 1 to perform heat shielding between the rotary heat insulating wall 6A and the test object 23. Then, the two-pole test can be simultaneously performed on the DUT 23 by performing the test on both the low temperature and constant humidity section 1 and the constant temperature and constant humidity section 2 according to the required programs. After the required test is completed, the door 10A of the test tank is opened and the device under test is taken out.

According to the embodiment of FIG. 4, the same effects as those of the first embodiment can be obtained, and in particular, the bipolar test can be carried out simultaneously on the device under test 23. It has a unique effect.

[0028]

As described above in detail, according to the present invention, the heat capacity of the heat insulating side wall is reduced by changing the structure in the test tank, and the capacity of the heat source equipment such as the heater and the refrigerator is reduced. It is possible to provide an environmental testing device that can be efficiently used as a multipurpose testing device that can perform two or more types of tests with one device while reducing the size, reducing the size, saving the space, and saving the energy. ..

Further, according to the present invention, the high temperature part of the test tank,
It is possible to provide an environmental test apparatus that makes it possible to apply a local temperature shock to a DUT by providing separate spot heating and cooling sources by utilizing the space in the low temperature region.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view of an environmental testing device according to an embodiment of the present invention.

FIG. 2 is a top view of FIG.

FIG. 3 is a partially enlarged perspective view showing an embodiment of heat insulation of a low temperature and constant humidity section and a constant temperature and constant humidity section.

FIG. 4 is a top view of an environmental testing device according to another embodiment of the present invention.

[Explanation of symbols]

 1 Low-temperature constant-humidity part 2 Constant-temperature constant-humidity part 3 Low-temperature regulator 4 High-temperature regulator 5 Heat insulation side wall 6 Rotation heat insulation wall 6b Opening 7 Lower fulcrum 8 Electric motor 9 Shelf 10, 10-1, 10-2, 10A Door 11 Heat exchanger 12 Electric Heater 13,17 Fan Electric Motor 14,20 Fan 15 Low Temperature Refrigerator 16 Humidity Adjusting Refrigerator 18 Packing 23 Test Object 31,41 Compressor 32,42 Condenser 33,43 Expansion Mechanism

Claims (6)

[Claims] 1. A test tank for storing an object to be tested is provided with a heat insulating wall that divides the test tank into a high temperature portion and a low temperature portion, and the heat insulating wall is provided with means capable of rotating about the center of the test tank as a fulcrum. Environmental testing equipment characterized by. 2. A heat insulating wall for partitioning a test tank for storing a device under test into a low temperature adjusting device which is a heat source device, a low temperature constant humidity part and a constant temperature constant humidity part each having a high temperature adjusting device. At least 180 with the center of the test tank as a fulcrum.
An environmental test device comprising a support shaft for rotating and a drive means. 3. The environment according to claim 1, wherein a heat insulating sealing means is provided at a contact portion between a heat insulating side wall forming the test tank and a heat insulating wall rotating in the test tank. Test equipment. 4. The environment test apparatus according to claim 1, wherein the rotatable heat insulating wall is provided with a holder on which a device under test can be placed. 5. The environmental test apparatus according to claim 4, wherein a local heat source device is provided in a space area inside the test tank provided with a rotatable heat insulating wall. 6. The environmental test apparatus according to claim 1, wherein the rotatable heat insulating wall is provided with an opening through which the test object can be attached so as to penetrate the heat insulating wall.