FLOW RATE CONTROL MECHANISM AND GAS CHROMATOGRAPH INCLUDING FLOW RATE CONTROL MECHANISM

摘要

One end of carrier gas channel, purge gas channel and split gas channel is connected to sample gasification chamber. The other end of carrier gas channel, purge gas channel, and split gas channel is connected to a flow rate control mechanism in the form of carrier gas flow rate control block, purge gas flow rate control block and split gas flow rate control block respectively. Carrier gas flow rate control block, purge gas flow rate control block and split gas flow rate control block constitute a flow rate control unit. This reduces the possibility of leakage of gas to the outside and admixture of impurities from the outside in the flow rate control mechanism.

主权项

1. A flow rate control mechanism comprising a single block in which are integrally joined:
a first connection unit for connecting a gas supply source which supplies gas; a second connection unit for connecting a gas channel for guiding gas from said gas supply source to a predetermined part; an internal channel which connects said first connection unit to said second connection unit; and a flow rate control valve which controls the flow rate of gas flowing between said first connection unit and said second connection unit by adjusting the channel width of said internal channel.