JPH0465974U

JPH0465974U -

Info

Publication number: JPH0465974U
Application number: JP10773890U
Authority: JP
Priority date: 1990-10-15
Filing date: 1990-10-15
Publication date: 1992-06-09

Description

[Brief explanation of drawings]

第１図は本考案の一実施例であるトロコイドポ
ンプを示す分解斜視図、第２図は第１図の−
線に沿う矢視図、第３図はそのトロコイドポンプ
を示す正面断面図、第４図はその側面断面図、第
５図は燃料温度と燃料の吐出量との関係を示す温
度特性線図、である。１……ハウジング、２……カムリング、３……
端板、４……支軸、５……外側歯車回転子、６…
…凹部、７……内側歯車回転子、８……凸部、９
……圧力室、１０……デツド部、１１……吸入口
、１２……導出口、１３……ウエアプレート、１
４……バイアス手段、２４……脱気口、２５……
脱気通路。 Fig. 1 is an exploded perspective view showing a trochoid pump which is an embodiment of the present invention, and Fig. 2 is a -
3 is a front sectional view showing the trochoid pump, FIG. 4 is a side sectional view thereof, and FIG. 5 is a temperature characteristic diagram showing the relationship between fuel temperature and fuel discharge amount. It is. 1...Housing, 2...Cam ring, 3...
End plate, 4... Support shaft, 5... Outer gear rotor, 6...
...Concave portion, 7...Inner gear rotor, 8...Protrusion, 9
...Pressure chamber, 10...Dead part, 11...Suction port, 12...Outlet port, 13...Wear plate, 1
4... Bias means, 24... Deaeration port, 25...
Deaeration passage.

Claims

[Scope of claim for utility model registration] An outer gear rotor and an inner gear rotor having different numbers of teeth, an end plate that rotatably supports the inner gear rotor, and an end plate sandwiched between the end plate and both rotors. The pressure chamber is formed by the space between adjacent teeth of both rotors, the end plate, and the wear plate, and whose volume increases or decreases as the rotors rotate. In a trochoid pump, the end plate and the wear plate are formed with an inlet communicating with a pressure chamber whose volume gradually increases, and an outlet communicating with a pressure chamber whose volume decreases, A trochoid pump, characterized in that the end plate has a degassing passage, and the wear plate has a degassing port communicating with the degassing passage.