Nitrogen making machine and method

Abstract

The invention relates to a nitrogen making machine and method, belonging to the technical field of nitrogen making. The nitrogen making machine comprises an air compressor, a dryer, an air storage tank, a nitrogen-oxygen separating device and a nitrogen storage tank which are sequentially connected. The nitrogen making machine also comprises a controller and a temperature sensor, wherein the temperature is arranged in an environment, the output end of the temperature sensor is connected with the input end of the controller, the output end of the controller is connected with a compressor of the dryer, and the controller is used for controlling whether to start the compressor of the dryer or not through judging whether the environment temperature is more than 0 DEG C. According to the invention, the compressor of the dryer is closed by the programmable controller when the temperature is lower than 0 DEG C, thus the problem of pipeline blockage caused by condensate freezing because the compressor is started when the dryer carries out freezing drying at a temperature being lower than 0DEG C is avoided; a heating device is arranged in a lubricating system of the air compressor to heat lubricating oil being lower than a set value so that the air compressor is easily started; and the nitrogen is automatically made at a temperature being lower than 0 DEG C, and the useable range of the nitrogen making machine is enlarged.

Description

technical field [0001] The invention relates to a nitrogen making machine and a nitrogen making method, belonging to the technical field of nitrogen production. Background technique [0002] At present, in the process of nitrogen production of known nitrogen generators, the compressor of the dryer is always on when the dryer is refrigerating and drying. The temperature of the compressed air entering the dryer is lower, and the condensed water is easy to freeze and block the pipeline. At the same time, in an environment below 0°C, the temperature of the lubricating oil in the lubrication system of the air compressor is low, which makes it difficult to start the air compressor. Contents of the invention [0003] The purpose of the present invention is to provide a nitrogen making machine and a nitrogen making method to solve the problem of freezing of condensed water and blocking the pipeline due to the opening of the compressor when the dryer is refrigerated and dried in t...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a nitrogen making machine and a nitrogen making method to solve the problem of freezing of condensed water and blocking the pipeline due to the opening of the compressor when the dryer is refrigerated and dried in the current nitrogen production at an environment below 0°C. question

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