With wide speading of the bottle-type Joule-Thomson miccocryogenic systems used for cooling sensitive elements of the detector devices in the viewing and sighting systems, the vital problem of refilling the emptied bottels with a cryoagent -high-purity gas- has arisen.
   The paper gives the comparison of methods used to produce a cryoagent of the required quality, the analysis of well-known foreign refilling means from the point of view of their circuit solutions and technical characteristics, proposes the concept of arrangement of the home air generator specifying its composition and technical characteristics in adreement with the consumers.
   The basic requirements specified the generator make-up were combination of mobility with sufficient capacity; autonomous operation; simplicity and convenience in use and service.
   The generator consists of power unit based on a combustion engine; compressor; purification system and bottle-filling unit. The expected generator technical characteristics arc as follows:

1	Capacity, nm3/h	1.5
2	Max. outlet pressure, Mpa	40.0
3	Number of bottles being filled simultaneously	2
4	Max. number of bottles of 0.751 capacity filled per hour	5
5	Expected mass, kg	95
6	Expected overall dimensions, mm	700X500X600