- 14 -
7
6
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7. Description of operation
In the refrigeration compressed air dryer warm, moisture saturated
compressed air is cooled down to +3°C.
The first step is the pre-cooling of the inlet air flow by heat exchange
with the cold outlet compressed air flow. In the second step the
cooling is effected by evaporation refrigerant.
The internal separator system separates the condensed water drops
from the compressed air stream.
Condensate is drained via an automatic drain system. After warming
up within the air/air-heatexchanger the compressed air leaves the
device dry and warm with a temperature of abt. 7°C less than the
inlet temperature.
The refrigeration circuit is hermetically sealed. The refrigerant
compressor takes in evaporated refrigerant and compresses it to a
higher pressure. In the refrigerant condenser the compressed
refrigerant is being liquefied. Via an injection instrument the liquid
refrigerant is reduced in pressure and injected into the refrigerant/
air-heatexchanger.
7. Îïèñàíèå ðàáîòû
 îñóøèòåëå îõëàæäåííîãî ñæàòîãî âîçäóõà òåïëàÿ âëàãà,
íàñûùåííàÿ ñæàòûì âîçäóõîì, îõëàæäàåòñÿ äî +3°C.
Ïåðâûé ýòàï — ýòî ïðåäâàðèòåëüíîå îõëàæäåíèå ïîñòóïàþùåãî
âîçäóøíîãî ïîòîêà ïðè ïîìîùè òåïëîîáìåíà ñ õîëîäíûì
âûõîäÿùèì âîçäóøíûì ïîòîêîì ñæàòîãî âîçäóõà. Íà âòîðîì
ýòàïå îõëàæäåíèå ïðîèñõîäèò âñëåäñòâèå èñïàðåíèÿ õëàäàãåíòà.
Âíóòðåííÿÿ ñèñòåìà ñåïàðèðîâàíèÿ îòäåëÿåò êîíäåíñàò èç ïîòîêà
ñæàòîãî âîçäóõà.
Êîíäåíñàò óäàëÿåòñÿ ïîñðåäñòâîì àâòîìàòè÷åñêîé ñèñòåìû
óäàëåíèÿ êîíäåíñàòà. Ïîñëå ðàçîãðåâà â âîçäóøíîì
òåïëîîáìåííèêå ñæàòûé âîçäóõ âûõîäèò èç óñòðîéñòâà ñóõèì è
òåïëûì ïðè òåìïåðàòóðå îêîëî 7°C íèæå, ÷åì òåìïåðàòóðà íà
âõîäå.
Öèêë îõëàæäåíèÿ ãåðìåòè÷åí. Õîëîäèëüíûé êîìïðåññîð âáèðàåò
èñïàðèâøèéñÿ õëàäàãåíò è ñæèìàåò åãî ñ áîëüøèì äàâëåíèåì. â
êîíäåíñàòîðå ñæàòûé õëàäàãåíò ñæèæàåòñÿ.
Âåðîÿòíî, «ïîñëå ïðîõîæäåíèÿ ÷åðåç äðîññåëü äàâëåíèå
õëàäàãåíòà ñíèæàåòñÿ è îí ïîñòóïàåò â èñïàðèòåëü.
Îáâîäíîé ðåãóëÿòîð ãîðÿ÷åãî ãàçà àâòîìàòè÷åñêè ðåãóëèðóåò
íåîáõîäèìóþ îõëàæäàþùóþ ñïîñîáíîñòü â ñåêöèè
òåïëîîáìåííèêà, ñòð.21.
