JPH10274619A - Weather resistance tester - Google Patents

Abstract

(57) [Problem] To provide a weather resistance tester that can obtain an accurate test result without dew condensation on a sample after a test by relatively simple means. I do. A xenon lamp (13) and a sample frame (14) are arranged inside a test chamber (12) of a weather resistance tester main body (11), and a humidifier (16) is provided separately from the test chamber in communication with the test chamber. The humidifier has a water storage tank 17 and a heater 23 disposed inside the water storage tank. Then, immediately after the device stops, the temperature inside the water storage tank is lowered.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an improvement of a weather resistance tester.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 2, as a weather resistance tester for accelerating a test in which a coated plate, plastic, film or the like is mainly deteriorated by light, as shown in FIG. A sample frame 2 is rotatably arranged, and a humidifier 3 is provided inside the test chamber 1. The humidifier 3 includes, for example, a water storage tank 4, a heater 5 disposed inside the water storage tank 4, and a steam outlet 6. The humidifier 3, water inlet 7, and drain 8 are provided. Further, inside the test chamber 1, an ultraviolet light source of about 5 kilowatts is arranged to irradiate the sample with ultraviolet light.

[0003]

However, according to the weather resistance tester having the above-mentioned structure, while the ultraviolet light source is turned on, it is usually 5 times.
Although the humidity is controlled at about 0%, when the test is completed and the ultraviolet light source is turned off, steam is generated from the humidifier due to residual heat, and the humidity in the test chamber becomes about 98%, causing dew condensation on the sample. If condensation occurs on the sample, the sample will change, resulting in adverse effects on the test.
In particular, the test results may be left for several days after the test is completed if a holiday or the like intervenes, so that accurate test results may not be obtained.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has a relatively simple device and is capable of obtaining an accurate test result without causing dew condensation in a sample after the test. It is intended to provide a testing machine.

[0005]

The weather resistance tester according to the present invention comprises an ultraviolet light source and a sample table arranged inside a test room of a main body of the weather resistance tester. Further, separately from the test chamber, a humidifier is provided in communication with the test chamber, and a humidifier is provided inside the humidifier, and a water storage tank and a heater arranged inside the water storage tank are provided. It is configured to immediately lower the temperature inside the water storage tank. According to the same weather resistance tester, after the test is completed, steam can be generated by the residual heat from the humidifying device, and dew condensation does not occur on the sample, so that an accurate test can be performed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIG. In FIG. 1, reference numeral 11 denotes a weather resistance tester main body,
It has a test chamber 12 inside. Reference numeral 13 denotes, for example, a xenon lamp of about 4 kW to 7.5 kW, which is mounted inside the test chamber 12. Reference numeral 14 denotes a sample frame which is rotatably arranged around a xenon lamp, and is configured to be able to hang a large number of samples. 1
Reference numeral 5 denotes a sample placed on the sample frame 14, which is, for example, a painted plate, plastic or film. Numeral 16 denotes a humidifier constructed in a box separate from the test chamber 12, and is provided with a water supply port 18 provided above a water storage tank 17. Reference numeral 19 denotes a water supply solenoid valve arranged close to the water supply port 18. Reference numeral 21 denotes a drain port provided in the water storage tank 17, which is configured to be automatically drained when the water in the water storage tank 17 exceeds 15 cm. Reference numeral 22 denotes a drainage solenoid valve which operates when draining the water inside the water storage tank 17 after the test. Reference numeral 23 denotes a heater provided at the inner bottom of the water storage tank 17, which boil water at a set temperature during the test to generate steam. Reference numeral 24 denotes a door for opening and closing the weather resistance tester main body 11.

Next, a description will be given of a test of a coated plate by the above-mentioned weather resistance tester. A sample of, for example, a painted plate is engaged with a sample frame 14 inside the weather resistance tester main body 11. Next, pure water is injected into the water storage tank 17, the xenon lamp 13 is turned on, and the temperature inside the water storage tank 17 is raised to about 50 degrees by the heater 23. Under the same test conditions, the test is continuously performed, for example, for 1,000 hours. Immediately after the test, drain hot water and inject cooling water into the water tank. According to this test, warm water is drained simultaneously with the end of the test, so that the sample is not affected by moisture after the end of the test, and an accurate weather resistance test can be performed.

Next, a description will be given of a plastic test by the above-mentioned weather resistance tester. A sample of, for example, a painted plate is engaged with a sample frame 14 inside the weather resistance tester main body 11. Next, pure water is injected into the water storage tank 17, the xenon lamp 13 is turned on, and the temperature inside the water storage tank 17 is raised to about 63 degrees by the heater 23. Under the same test conditions, the test is continuously performed, for example, for 1,000 hours. Immediately after the test, inject cooling water into warm water,
Cool to about 5 degrees. According to the same test, the hot water is cooled at the same time as the end of the test, so that the sample is not affected by moisture after the end of the test, and accurate weather resistance can be performed.

[0009]

According to the above-mentioned weather resistance tester of the present invention, after the test is completed, the humidifier does not generate steam due to residual heat and does not cause dew condensation on the sample. effective.

[Brief description of the drawings]

FIG. 1 is a side view of a weathering tester of the present invention.

FIG. 2 is a side view of a conventional weather resistance tester.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Weather resistance tester main body 12 Test room 13 Xenon lamp 14 Sample frame 15 Sample 16 Humidifier 17 Water storage tank 18 Water supply port 19 Electromagnetic valve for water supply 21 Drain port 22 Electromagnetic valve for drainage 23 Heater 24 Opening / closing door

Claims (1)

[Claims] An ultraviolet light source and a sample frame are arranged inside a test chamber of a weather resistance tester main body, and a humidifier is provided separately from the test chamber in communication with the test chamber. A weather resistance tester comprising: a water storage tank; and a heater disposed inside the water storage tank, and further configured to immediately lower the temperature inside the water storage tank after the device is stopped.