Device and method for low temperature production testing of optical communication module based on vortex tube

Abstract

The invention belongs to the technical field of optical communication production testing, and specifically provides a device and method for low temperature production testing of an optical communication module based on a vortex tube. The device comprises a controller, a vortex tube, a gas thermometer, an auxiliary gas passage and a control valve; in a low-temperature mode, when the required gas outlet temperature is high, the auxiliary gas passage is opened, the controller controls the opening degree of the proportional flow control valve according to the gas temperature at a target gas outletto get the gas temperature of the target gas outlet and achieve a certain gas flow rate; and when the vortex tube needs defrosting, the auxiliary gas passage is opened, the proportional flow controlvalve is closed, and a heating tube is opened to defrost or deice. The device has the advantages of simple structure, no moving parts, low use cost and maintenance-free; accurate and automatic controlof the gas outlet temperature and the gas outlet volume at the cold end of the vortex tube is achieved, so that the control accuracy reaches + / - 1 DEG C; and the flow rate of the cold gas in a low-temperature range from 0 DEG C to 9 DEG C is increased, so that the cooling speed requirement of the production testing of the optical communication module is met.

Description

technical field [0001] The invention belongs to the technical field of optical communication production and testing, and in particular relates to a device and method for low-temperature production and testing of an optical communication module based on a vortex tube. Background technique [0002] During the production and testing process of optical communication modules, it is necessary to use high and low temperature equipment to reduce the ambient temperature of the product to the set high and low temperature environment. Currently, most of the high and low temperature equipment used is a heat flow meter, but its purchase and use costs are high. [0003] The vortex tube is also a commonly used cooling device, but it has the following problems when it is applied to high-precision and various low-temperature occasions: [0004] 1. The temperature and air output of the cold end cannot be automatically controlled. [0005] 2. The cooling curve of the outlet air temperature at...

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Problems solved by technology

[0009] The purpose of the present invention is to overcome the problems of low precision and slow speed of high and low temperature cooling in the production and testing of optical communication modules in the prior art

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