Constant-temperature air bath device and method for detecting temperature controller thereof and testing aging of temperature controller

Abstract

The invention discloses a constant-temperature air bath device and a method for detecting a temperature controller thereof and testing the aging of the temperature controller. The device comprises an outer box body, an upper cover, a heating cavity and an air feed and discharge mechanism, wherein the outer box body is internally provided with the heating cavity, the side of the outer box body is provided with an air feed and discharge fan, the top part of the outer box body is provided with a control switch, the air feed and discharge mechanism is arranged below the upper cover, the side of the upper cover is provided with an air discharge fan, the side and the upper of the upper cover are respectively provided with a heat-preservation layer, the heating cavity is connected with the outer box body through a supporting column, and the air feed and the discharge mechanism is clung to a protective cover in the heating cavity through a sealing ring. Compared with the prior art, in the invention, the heating cavity is circular, air flow ring-shaped circulation and sample circumferential positioning are combined, and the accurate temperature control is realized by an air heat-conduction mode. Simultaneously, in the invention, the temperature in the heating cavity is uniformly distributed, and can be quickly raised and reduced, and the heat-preservation and heat-dissipation effects are good.

Description

technical field [0001] The invention relates to the technical field of automatic detection, in particular to a constant temperature air bath device and its temperature controller detection and aging test methods. Background technique [0002] The constant temperature air bath device is used in the electronic product production industry or in the testing center to determine product quality, stability and life; it can also be used in other occasions that require temperature and need to be tested in a constant temperature environment. [0003] At present, the domestic constant temperature air bath device usually uses a rectangular box, and the parts are scattered in the box for detection. Due to the structure of the box, the temperature uniformity in the box is not good, and the temperature of the air field is unstable. When the temperature controller is tested, the simultaneous detection of multiple parts of the temperature controller will cause a large error in the on-off tem...

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Problems solved by technology

[0003] At present, the domestic constant temperature air bath device usually uses a rectangular box, and the parts are scattered in the box for detection. Due to the structure of the box, the temperature uniformity in the box is not good, and the temperature of the air field is unstable. When the temperature controller is tested, the simultaneous detection of multiple parts of the temperature controller will cause a large error in the on-off temperature of the temperature controller, which will affect the product quality and detection accuracy.

In addition, because the temperature controller has no fixed position, multiple temperature controllers are prone to collisions when they are detected at the same time, and electrical short circuits occur from time to time, and because the device is required to achieve rapid temperature rise and fall during the life test of the product, so the current domestic production industry , The testing center does product quality, stability testing and product life testing by two sets of devices

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