Downhole dustproof mask

The utility model provides an underground dustproof mask which comprises a mask body, an air constant temperature system and an air inlet pipe used for connecting an air outlet of the air constant temperature system and an air inlet of the mask body. A breathing box with a one-way exhalation valve i...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	LIU XINGQUAN, QU YACHEN, CHEN KEXU, ZHAO HONGKAI, WANG WENSHAO, LI GUILIN, WU QINZHENG, AHN JI-HAE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING FIRE-FIGHTING HEAT EXCHANGE IN GENERAL HEAT PUMP SYSTEMS HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT HEATING HUMAN NECESSITIES LIFE-SAVING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Schreiben Sie den ersten Kommentar!