Refrigerant injection device for refrigerant destruction facility

Abstract

Featured is a refrigerant injection device which is particularly suitable for use in a refrigerant destruction facility using an incinerator. Such an injection device includes a storage device which stores the refrigerant and a decompressor fluidly coupled to the storage device. The injection device further includes two flow meters and a cutoff-valve that are fluidly coupled to the decompressor. The cutoff valve is configured to cut off the injection of refrigerant. The injection device further includes bypass flow members that are fluidly coupled to the two flow meters. The bypass flow members and flow meters are configured and arranged to selectively measure the flow rate and to perform flow meter calibration without stopping the feeding of refrigerant to the injection device.

1 . A refrigerant injection device for a refrigerant destruction facility, the refrigerant injection device comprising:
 a refrigerant container storing refrigerant;   a decompressor connected to the refrigerant container and decompressing the refrigerant to be easily evaporated; and   a flowmeter measuring the flow rate of the refrigerant decompressed by the decompressor.   
     
     
         2 . The refrigerant injection device of  claim 1 , further comprising:
 an oil filter and a mist filter removing oil and mist contained in the refrigerant decompressed by the decompressor; and   a drain box storing the oil and mist filtered by the oil filter and the mist filter.   
     
     
         3 . The refrigerant injection device of  claim 1 , further comprising a sampling port for analyzing the purity of the refrigerant provided in a pipe at the rear of the oil filter and the mist filter. 
     
     
         4 . The refrigerant injection device of  claim 1 , wherein the flowmeter comprises a first flowmeter and a second flowmeter, which are connected in series, such that the flow rates measured by the first and second flowmeters are compared and corrected to obtain a more precise flow rate of the refrigerant. 
     
     
         5 . The refrigerant injection device of  claim 1 , wherein the first flowmeter and the second flowmeter are connected to a first bypass pipe and a second bypass pipe, respectively, and wherein, during calibration of the first flowmeter, the first flowmeter is closed such that the refrigerant passes through the first bypass pipe and is then injected into the refrigerant destruction facility through the second flowmeter for measuring the flow rate of the refrigerant and, during calibration of the second flowmeter, the second flowmeter is closed such that the refrigerant passes through the first flowmeter for measuring the flow rate of the refrigerant and is then injected into the refrigerant destruction facility through the second bypass pipe, thus performing the calibration of the flowmeter without stopping the operation of the device. 
     
     
         6 . A refrigerant injection device for a refrigerant destruction facility, the refrigerant injection device comprising:
 a refrigerant container in which is stored refrigerant; and   a decompressor fluidly coupled to the refrigerant container, the decompressor being configured to decompress the refrigerant being stored in the refriferant container. to be easily evaporated   
     
     
         7 . The refrigerant injection device of  claim 6 , further comprising:
 a flowmeter operably coupled to the decompressor for measuring the flow rate of the decompressed refrigerant from decompressor.   
     
     
         8 . The refrigerant injection device of  claim 6 , further comprising:
 an oil filter and a mist filter being configured so as to remove oil and mist that is contained in the decompressed refrigerant; and   a drain box operably coupled to the oil and mist filters and being configured so as to store the oil and mist filtered by the oil filter and the mist filter.   
     
     
         9 . The refrigerant injection device of  claim 6 , further comprising a sampling port for analyzing the purity of the refrigerant, the port being located in piping downstream of the oil filter and the mist filters. 
     
     
         10 . The refrigerant injection device of  claim 6 , further comprising a first flowmeter and a second flowmeter that are connected in series. 
     
     
         11 . The refrigerant injection device of  claim 10 , wherein:
 the first flowmeter and the second flowmeter are connected to a first bypass pipe and a second bypass pipe, respectively,   wherein, during calibration of the first flowmeter, the first flowmeter is closed such that the refrigerant passes through the first bypass pipe and is then injected into the refrigerant destruction facility through the second flowmeter for measuring the flow rate of the refrigerant and, during calibration of the second flowmeter, the second flowmeter is closed such that the refrigerant passes through the first flowmeter for measuring the flow rate of the refrigerant and is then injected into the refrigerant destruction facility through the second bypass pipe, thus performing the calibration of the flowmeter without stopping the operation of the device.