JP3389296B2 - Constant temperature and humidity chamber - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant temperature and humidity chamber for forming an environmental test chamber for performing a durability test of electronic parts and new materials. 2. Description of the Related Art A conventional general thermo-hygrostat has a main body having a thermo-hygrostat storage room therein and a door for opening and closing the opening of the main body. The materials are stored, and the storage room is circulated with a heater for heating, a cooling unit for cooling and defrosting, a humidifier, a blower, etc., so that the temperature is -40C to 150C and the humidity is 20% to 95%. Let
And to perform a durability test under environmental of the constant temperature and humidity (for example, see the actual fair 5-21030 JP). [0003] However, in the conventional constant temperature / humidity bath, since the constant temperature air circulating in the storage chamber is blown forward and forward by the blower during operation, when the door is opened during high temperature operation, There was a problem that the high-temperature air blown from the blower directly hit the face of the worker who opened the door. The present invention solves the above problem,
A shield plate is provided on the upper wall of the main body facing the blower outlet,
It is an object of the present invention to provide a constant temperature / humidity chamber in which air blown by a blower is directed downward by the shielding plate when a door is opened. According to the present invention, a storage room is provided in a main body having a door on a front surface, a storage room in a main body having a door on a front surface,
It has a suction port at the bottom and an outlet at the top to blow forward ,
In a thermo-hygrostat provided with a temperature-humidity control device and a blower for making the air in the storage chamber constant temperature and humidity, an upper part of the storage room is opposed to an outlet of the blower.
And a shield plate attached by a hinge so that it can rotate freely.
You. According to the present invention having the above-described structure,
The air blown upward and forward by the blower is directed downward by a shielding plate attached to the upper part of the storage room so as not to blow forward when the door is opened. The present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a thermo-hygrostat showing an embodiment of the present invention. FIG. 2 is an enlarged view of a main part showing a mounting state of the shielding plate of the present invention. 1 is a thermo-hygrostat formed of a main body 5 filled with a heat insulating material 4 between an outer box 2 and an inner box 3 made of stainless steel, and a door 6 for opening and closing the opening of the main body. It is.
Inside the inner box 3 of the main body 5, a constant temperature / humidity environmental test chamber 7 for maintaining durability at a predetermined temperature and humidity and performing an endurance test of electronic components and new materials is formed. The environmental test chamber 7 is provided with a heater 8 for heating the test chamber, a humidifier 9 for humidification, and a partition plate 13 for forming a space 12 for accommodating a temperature and humidity controller 11 having a freezing unit 10 for cooling and dehumidifying. . Above the temperature and humidity control device 11, a blower 14 for supplying air with constant temperature and humidity into the environmental test chamber 7 is provided.
The upper part of the partition plate 13 is formed with an outlet 15 for blowing forward, and the lower part thereof is formed with a suction port 16. The blower 14 is used to connect the environmental test chamber 7 and the space 12 containing the temperature and humidity controller 11 to a constant temperature and humidity condition. Air is circulating. Reference numeral 17 denotes a shielding plate provided on the door 6 side of the upper inner wall 18 of the inner box 3, and this shielding plate is provided to face the outlet 15. The shielding plate 17 is rotatably attached by a hinge 19. An environmental test chamber 7 for performing a durability test on electronic components, new materials, etc., in a thermo-hygrostat configured as described above.
Is a temperature of −40 ° C. to 150 ° C., a humidity of 20% to It is set in the range of 95%. The air that has been made constant in temperature and humidity by the temperature / humidity controller 11 is blown out of the environmental test chamber 7 from an outlet 15 by a blower 14. For example, when an electronic component is subjected to a durability test at a high temperature of 80 ° C. or higher, hot air is circulating in the environmental test chamber 7. If the door 6 is opened during the durability test, there is a risk that hot air may blow out. That is, by providing the shielding plate 17 on the upper inner wall 18 facing the outlet 15, the hot air blown forward from the blower 14 can be directed downward, and the operator can open the door 6 during the durability test. Do not directly hit this worker. Further, the shield plate 17 allows the air blown from the blower 14 to flow downward, thereby suppressing a decrease in the temperature and humidity in the environmental test chamber 7 when the door 6 is opened. Since the shield plate 17 is rotatably mounted by the hinge 19, it does not hinder the placement of a large test apparatus in the environmental test chamber 7. According to the present invention as described above, according to the present invention, in a body having a door on the front, and the storage chamber, a suction port at the bottom, front
Have outlet for blowing the upper part, the in temperature and humidity control device with constant temperature and humidity bath which is provided a blower for the storage compartment air to constant temperature and humidity, said the upper part of the storage chamber of the blower blowing Opposite to the exit and pivotally hinged
Since the shield plate is attached, even if the operator opens the door during the high-temperature endurance test, the hot air can be directed downward by the shield plate to prevent the hot air from directly hitting the operator. Further, according to the present invention, since the shielding plate is rotatably mounted on the upper portion of the storage room by the hinge, the opening of the storage room can be widened by folding the shielding plate by the hinge, and a large test apparatus can be inserted. It is like that.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a thermo-hygrostat showing an embodiment of the present invention. FIG. 2 is an enlarged view of a main part of the shielding plate of the present invention. [Description of Signs] 1 constant temperature / humidity chamber 5 main body 6 door 7 environmental test chamber 8 heater 9 humidifier 10 refrigeration unit 11 temperature / humidity controller 13 partition plate 14 blower 15 outlet 16 suction port 17 shielding plate 19 hinge

Claims (1)

(57) [Claim 1] A storage room in a main body having a door on a front surface,
It has a suction port at the bottom and an outlet at the top to blow forward ,
In a thermo-hygrostat provided with a temperature-humidity control device and a blower for making the air in the storage chamber constant temperature and humidity, an upper part of the storage room is opposed to an outlet of the blower.
In addition, a shield plate is attached by a hinge so that it can rotate freely
And a constant temperature and humidity chamber.