JPH0318140B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention is designed to perform temperature resistance tests, humidity resistance tests, and equipment operation tests on small precision equipment, equipment parts, electronic parts, products, and other materials in the most natural state, which is influenced by air currents. The present invention relates to a temperature/humidity testing device that can maintain a free atmosphere.

[Conventional technology]

Conventionally, in this type of temperature/humidity test equipment, a heater, humidifier, etc. were installed inside a space formed at the bottom of the test chamber, such as the scheduled temperature/humidity test equipment disclosed in Japanese Patent Publication No. 32-6593. However, in some configurations, air is circulated by a fan, or air whose humidity and temperature are adjusted in a humidity control section, etc., is circulated by a fan, as in the temperature control device of a humidity control device in Japanese Patent Publication No. 57-33492, and is introduced into the test chamber through an inlet slit and an outlet slit. It is known that the configuration is made by circulating the .

[Problems to be solved by the invention]

However, in all of the above conventional configurations, the temperature-controlled and humidity-controlled airflow flows directly into the test chamber.
For example, moisture resistance testing of paper, reliability testing of electronic components,
When conducting tests such as pharmaceutical and bacterial culture tests, plant growth tests, infrared irradiation tests, etc. in which it is desirable for the wind to be in a natural flow state, it is necessary to suppress the wind speed of the circulating air flow. Therefore, if the temperature and humidity inside the test chamber are adjusted only by airflow with a suppressed wind speed, circulation will take time, and it will not be possible to quickly set uniform temperature and humidity conditions in the test chamber. This invention was devised in view of the above circumstances, and its main problem is to adjust the temperature inside the test chamber through the partition wall surrounding the test chamber with the air flowing and circulating in the wind tunnel, and to The purpose is to rectify a portion of the air flowing and circulating in the wind tunnel through the large number of ventilation holes formed, so that it passes through the test chamber in a state close to that of nature.

[Means to solve the problem]

In order to achieve the above-mentioned problems, this invention has the following features: (a) Inside the main body, which is box-shaped and equipped with an insulating door on one side, surrounded by insulating walls, there are Platy partition walls are provided at intervals to form a test chamber surrounded by the partition walls; (b) The test chamber is surrounded by a series of spaces between the partition walls of the test chamber and the inner surface of the heat insulating wall. (c) In the wind tunnel, a low-temperature generating section, a high-temperature generating section, a humidifying section, etc. are installed in the space along one side of the test chamber, and the temperature is controlled or controlled by these devices. A fan is provided to circulate humidified air within the wind tunnel. (d) A number of ventilation holes are provided in a pair of opposing partition walls of the test chamber to rectify a portion of the airflow circulating in the wind tunnel and flow within the test chamber. We are taking technical measures to make this possible.

[Effect]

With the above structure, the air is circulated within the wind tunnel by an air fan whose temperature or humidity is controlled by a low temperature generating section, a high temperature generating section, a humidifying section, or the like. Since this wind tunnel circulates around the test chamber, the temperature inside the test chamber can be adjusted via the plate-shaped partition forming the test chamber. Furthermore, a portion of the airflow circulating in the wind tunnel can be rectified through a large number of ventilation holes provided in the opposing partition walls and can flow within the test chamber. As a result, without having to rectify all of the temperature-controlled or humidity-controlled air flow sent out from the fan, only a portion of it is rectified and passes through the test chamber and comes into contact with the sample, creating a state close to natural. .

【Example】

Preferred embodiments of the temperature/humidity testing device according to the present invention will be described below with reference to the drawings. The temperature/humidity test device shown in Figs. 1 and 2 has a main body 1, which is formed into a box-shaped frame whose main part is surrounded by a heat insulating wall 2 and only the front side is open, and between the inner wall and the main body 1. A test chamber 3 is provided which is surrounded by walls at appropriate intervals. A lower space 7 having a larger volume than other parts is formed between the lower partition plate 4 forming the test chamber 3 and the lower wall surface 2' of the box body. Inside this lower space 7 is an evaporator 11 of a cooler.
The heater 13 and the humidifying tube 14' for humidifying the air are appropriately arranged and installed so that the remaining spaces on both sides and the upper part become the wind tunnel section 9. In this embodiment, among the partition plates forming the test chamber 3, a large number of small ventilation holes 5' are formed in each of the left and right partition plates when viewed from the front, and these are used as the rectifying plates 5, 5. A partition plate 6 is extended in series below one side of the rectifier plate 5 to partition the lower space 7, an air suction port 6' is provided in the partition plate 6, and an inlet port for the fan 8 is provided adjacent to the partition plate 6. The discharge side of the fan 8 is opened to the right side of the wind tunnel section 9 in the figure, and the runner of the fan 8 passes through the heat insulating wall 2 and is connected to a motor 8' arranged outside the heat insulating wall. be. In addition, a shelf holder 15 is attached to the inside of both the rectifier plates 5, 5, that is, on the test chamber 3 side, and this shelf holder 1
A removable shelf board 15' is attached between 5 and 15. In the open part of the front of the heat insulating box of the main body 1,
A door 10 having a heat insulating structure is attached so as to be easily opened and closed. This door 10 may be provided with a peephole if necessary. In addition, the drive unit 12 such as the compressor or condenser of the cooler
Equipment that generates heat, such as the main body of the humidifier 14, is installed at a lower position outside the heat insulating box of the main body 1. The operation of the temperature/humidity testing apparatus configured in this way will be explained. First, the object to be tested, that is, the sample, is placed inside the test chamber 3 by opening the front door 10, and is arranged as it is according to the test conditions for the sample. In addition, in equipment, power should be supplied to the motorized parts from the outside (preferably provide a power outlet (heat- and cold-resistant) on the door or in an appropriate place in the test room, or attach a structure that can be sealed and connect it to the outside. (The lead wire can be pulled out.) When performing a thermal atmosphere test (low constant temperature or constant temperature and humidity, etc.), the inside of the main body 1 is isolated from the outside air by the insulating wall 2 and the insulating door 10, so it is not affected by the outside air at all. , in the case of a low constant temperature test, if the cooler is driven to operate the evaporator 11 and the fan 8 is driven, the cold air flows through the fan 8.
During this period, some of the air flows into the test chamber 3 through a large number of small ventilation holes 5' provided in the rectifier plate 5. At this time, the walls of the test chamber 3 are kept at a constant temperature by the air flowing and circulating in the wind tunnel section 9 through the partitions surrounding the test chamber, and the room temperature is stabilized. The air flow passing through the ventilation holes 5' and flowing into the test chamber 3 has a flow resistance at each ventilation hole 5', and the wind speed is significantly reduced and rectified into a light breeze, which allows the thermoelectric flow to flow without causing any damage to the sample. It is possible to do so. In addition, in the case of a low temperature test, the above is as described above, and in the case of a high temperature, or when testing in a humidified state with increased temperature, the heater 13 is operated instead of driving the cooler, and the humidifier 14 is operated. Then, an appropriate amount of water vapor is released from the humidifying pipe 14', and the fan 8
The heating and humidifying airflow is circulated by the operation of the test chamber 3, and the rectified airflow is sent into the test chamber 3 through the rectifying plates 5, 5. In addition to the above-mentioned method, the air may be introduced into the test chamber in a vertical direction. In this case, both the upper and lower partition walls may be set to act as current plates. The air flow velocity in the test chamber 3 is set to range from very low velocity to the same as air flow in a general atmosphere, and the average value of the flow velocity is 0.18.
m/sec, and it is possible to improve the setting accuracy of temperature and humidity under such conditions. Further, the air volume can be appropriately adjusted by providing a damper (not shown) on the fan's fan side, and all temperature settings and condition settings are performed by a control unit provided outside the main body.

【Effect of the invention】

As described above, according to the present invention, it is possible to quickly and uniformly set the temperature and humidity in the test chamber to constant temperature while maintaining the airflow flowing through the test chamber in a state close to a natural flow. Therefore, it is especially important to effectively conduct tests that require natural wind flow, such as moisture resistance tests for paper, reliability tests for electronic components, culture tests for pharmaceuticals and bacteria, plant growth tests, and infrared irradiation tests. It is possible to conduct tests with high accuracy.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of a preferred embodiment of the temperature/humidity testing device of the present invention, and FIG.
FIG. 1...Main body, 2...Insulating wall, 3...Test chamber,
4... Lower bulkhead plate, 5... Rectifying plate, 5'... Small ventilation hole, 7... Lower space, 8... Fan, 9...
Wind tunnel section.

Claims (1)

[Scope of Claims] 1. A box-shaped main body surrounded by heat-insulating walls and having a heat-insulating door on one side, and inside thereof, plate-shaped partition walls are provided at intervals inside the inner surfaces of the top, bottom, left and right heat-insulating walls. is provided to form a test chamber surrounded by the partition wall, and a wind tunnel section is formed between the partition wall of the test chamber and the inner surface of the heat insulating wall so as to continuously surround the test chamber, and the wind tunnel is A low temperature generating section, a high temperature generating section, a humidifying section, etc. are installed in the space along one side of the test chamber, and a fan is installed to circulate the air whose temperature or humidity has been controlled by these devices into the wind tunnel section. , and characterized in that a large number of ventilation holes are provided in a pair of opposing partition walls of the test chamber to rectify a part of the airflow circulating in the wind tunnel part and cause it to flow inside the test chamber.
Humidity test equipment.