Dryer having gas heater

Abstract

A dryer includes a nozzle communicated with a gas pipe for supplying gas; a gas injection passage which is provided in the nozzle and through which the gas is injected; and an air intake passage provided in the nozzle so as to be communicated with the gas injection passage, wherein a cross section of the gas injection passage is smaller than a cross section of the air intake passage.

1 . A dryer, comprising:
 a nozzle communicated with a gas pipe for supplying gas;   a gas injection passage which is provided in the nozzle and through which the gas is injected; and   an air intake passage provided in the nozzle so as to be communicated with the gas injection passage,   wherein a cross section of the gas injection passage is smaller than a cross section of the air intake passage.   
   
   
       2 . The dryer of  claim 1 , wherein a diameter of the gas injection passage is smaller than a diameter of the air intake passage. 
   
   
       3 . The dryer of  claim 2 , further comprising a fastening part provided in the nozzle to mount the nozzle. 
   
   
       4 . The dryer of  claim 3 , wherein the length of the fastening part is greater than the diameter of the air intake passage. 
   
   
       5 . The dryer of  claim 3 , wherein the nozzle includes a nozzle for a first gas and a nozzle for a second gas. 
   
   
       6 . The dryer of  claim 5 , wherein the nozzle for a first gas includes a nozzle for Liquefied Petroleum Gas (LPG) and the nozzle for a second gas includes a nozzle for Liquefied Natural Gas (LNG) and the diameter of the gas injection passage of the LPG nozzle is smaller than the diameter of the gas injection passage of the LNG nozzle. 
   
   
       7 . The dryer of  claim 6 , wherein the diameter of the air intake passage of the LPG nozzle is smaller than the diameter of the air intake passage of the LNG nozzle. 
   
   
       8 . The dryer of  claim 6 , wherein, in the LPG nozzle, the diameter of the gas injection passage is 1.2 to 1.6 mm and the diameter of the air intake passage is 1.8 to 2.2 mm. 
   
   
       9 . The dryer of  claim 8 , wherein the length of the fastening part is 3.8 to 4.2 mm. 
   
   
       10 . The dryer of  claim 6 , wherein, in the LNG nozzle, the diameter of the gas injection passage is 1.8 to 2.2 mm and the diameter of the air intake passage is 2.8 to 3.2 mm. 
   
   
       11 . The dryer of  claim 10 , wherein the length of the fastening part is 3.8 to 4.2 mm. 
   
   
       12 . The dryer of  claim 1 , wherein the nozzle has a shape of a polygonal prism and the air intake passage is formed on a face which forms the polygon. 
   
   
       13 . The dryer of  claim 1 , wherein the cross section of the gas injection passage is the smallest of cross sections of the flow path of the gas injection passage and the cross section of the air intake passage is the smallest of cross sections of the flow path of the air intake passage. 
   
   
       14 . A dryer, comprising:
 a gas pipe for supplying gas;   a valve to which the gas pipe is connected;   a nozzle provided in the valve;   a gas injection passage which is provided in the nozzle and through which the gas is injected;   an air intake passage provided in the nozzle so as to be communicated with the gas injection passage; and   a fastening part provided in the nozzle to mount the nozzle in the valve,   wherein a diameter of the gas injection passage is smaller than a diameter of the air intake passage.   
   
   
       15 . The dryer of  claim 14 , wherein the nozzle includes a nozzle for Liquefied Petroleum Gas (LPG) and a nozzle for Liquefied Natural Gas (LNG) which are detachably mounted in the valve. 
   
   
       16 . The dryer of  claim 15 , wherein the diameter of the gas injection passage of the LPG nozzle is smaller than the diameter of the gas injection passage of the LNG nozzle. 
   
   
       17 . The dryer of  claim 15 , wherein the diameter of the air intake passage of the LPG nozzle is smaller than the diameter of the air intake passage of the LNG nozzle. 
   
   
       18 . The dryer of  claim 14 , wherein the diameter of the gas injection passage is the smallest of diameters of the flow path of the gas injection passage and the diameter of the air intake passage is the smallest of diameters of the flow path of the air intake passage.