GENERAL SAMPLE INJECTOR, GAS CHROMATOGRAPH AND COMBINED SPECTROMETER

摘要

The present invention discloses a general sample injector, comprising a sample injection port mechanism, a sample injector shell, a vaporizing chamber, a heater, a temperature control unit, a carrier gas channel, a septum purge channel, a flow splitting channel, a coolant channel, a multichannel flow control valve and a temperature control unit. The general sample injector, equivalent to a “programmed temperature vaporizer” injector combining splitting/no splitting with cold column head sample injection, gives full play to the advantages of various sample injection modes, overcomes a plurality of disadvantages, and has higher practicability and better flexibility.

主权项

1. A sample injector, comprising a sample injector shell and a vaporizing chamber located in the sample injector shell;
a sample injector shell opening and a detachable end cover are arranged at the top of the sample injector shell, and the end cover seals the sample injector shell opening; a vaporizing chamber opening is arranged at the top of the vaporizing chamber, and a channel for enabling a gas to pass is reserved between the vaporizing chamber opening and the end cover; a carrier gas channel, a septum purge channel and a coolant channel are further arranged in the sample injector shell along the outer circumference of the vaporizing chamber, a carrier gas channel opening portion and a septum purge channel opening portion are respectively arranged at the tops of the carrier gas channel, the coolant channel and the septum purge channel, and both of the carrier gas channel opening portion and the septum purge channel opening portion are communicated with the opening at the top of the vaporizing chamber; the carrier gas channel is provided with a carrier gas inlet, the septum purge channel is provided with a septum purge channel outlet, and the coolant channel is provided with a coolant inlet and a coolant outlet; a capillary column is arranged at the bottom of the vaporizing chamber, one end of the capillary column projects into the vaporizing chamber, and the other end of the capillary column projects out of the sample injector; and a heater is further arranged in the sample injector shell.