Heater for preventing carburetor from icing up

Abstract

The present invention provides a heater for preventing freezing of a carburetor. The suction passage 2 of the carburetor main body 1 is formed on the side surface, and the float chamber 6 forming a fixed fuel liquid level XX and the float chamber main body 5 are connected. They are arranged together under the carburetor main body 1 . The electric heater 13 is arranged on the main body of the float chamber 5, and the long axis of the electric heater 13 is arranged nearly parallel to the center line YY of the long axis of the suction passage 2 and the liquid level XX of the fuel in the float chamber 6. Line A-A, and arrange the electric heater near the bypass chamber 10 at the same time. Thereby, the bypass hole including the bypass chamber can be effectively heated, and at the same time, the evaporation of the fuel stored in the float chamber can be suppressed.

Description

technical field [0001] The present invention relates to a carburetor that adjusts and controls the amount and concentration of the mixed gas supplied to the engine, and particularly relates to a heater for preventing icing ( Installation of heaters to prevent freezing). Background technique [0002] according to figure 2 A conventional carburetor anti-freezing heater will be described. [0003] 1 is a carburetor main body with an air intake passage 2 installed on the side thereof, and a plate-shaped butterfly throttle valve 3 is used to control the opening and closing of the air intake passage 2 . [0004] The throttle valve 3 is screwed to the throttle valve shaft 4 rotatably supported on the carburetor body 1 , and the operator rotates the throttle valve shaft 4 to open and close the throttle valve 3 to the air intake passage 2 . [0005] The lower recess 1A of the carburetor main body 1 is closed by the cup-shaped float chamber main body 5, thereby forming the float ch...

AI Technical Summary

Problems solved by technology

[0012] And, because of the needs of female screw processing, there must be a space S between the upper end of the heater mounting hole 12 and the upper bottom 13B of the electric heater 13. In order to improve the heat transfer effect of the space S, fill it with lubricant. Grease, thus the assemblability of the electric heater 13 has been greatly hindered

[0013] And, the side portion 13A with the large heating area of ​​the electric heater 13 is arranged along the fuel storage direction (up and down direction in the figure) in the float chamber main body 5, so that the fuel in the float chamber 6 is easily filled by the side wall 5A. temperature, it is not good in suppressing the evaporation of fuel in the float chamber 6

[0014] Moreover, if the electric heating wire harness (not shown) is installed on the electric heater 13, the overall height of the carburetor is actually increased, thereby hindering the load freedom of the engine.

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