Gas idling transition passage structure for oil and gas dual-purpose carburetor

1. A gas idling transition passage structure for oil and gas dual-purpose carburetor comprises a carburetor body 1 and a mixing chamber 4 ;

a choke valve 5 and a throttle valve 9 disposed in the mixing chamber 4 in the order of the air flow direction;

a gas intake pipe 2 for supplying gas to the mixing chamber 4 disposed on the carburetor body 1 ;

a first air inlet pipe 7 and a second air inlet pipe 8 disposed in the carburetor body 1 in parallel;

when in use, an opening of an outlet end of the second air inlet pipe 8 is located in the mixing chamber 4 and the position of the outlet end of the second air inlet pipe 8 is at the intersection of an outer circle and the mixing chamber 4 when the throttle valve 9 is closed;

an outlet opening of the first air inlet pipe 7 located in front of the second air inlet pipe 8 in the mixing chamber 4 ;

the first air inlet pipe 7 and the second air inlet pipe 8 communicated with the gas intake pipe 2 through a bypass passage 3 .

2. The gas idling transition passage structure for oil and gas dual-purpose carburetor as defined in claim 1 , wherein a distribution chamber 6 is disposed between the bypass passage 3 and the first air inlet pipe 7 and the second air inlet pipe 8 .