Oil filling nozzle with vapor recovery function

Patent metadata

Field	Value
Publication number	US-9394156-B2
Application number	US-201313746107-A
Country	US
Kind code	B2
Filing date	Jan 21, 2013
Priority date	Sep 19, 2012
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

To provide an oil filling nozzle with vapor recovery function capable of controlling opening degree of a vapor passage depending on flow rate and adjusting recovery rate. The oil filling nozzle includes a discharge pipe 3 mounted to a front end of a nozzle; a vapor control valve 21 arranged in a middle of a pipe, which connects a vapor collector 19 mounted so as to cover a circumference of the discharge pipe and a vapor passage 22 , the vapor control valve 21 being opened and closed by liquid pressure in a nozzle main body 2 ; and a means for adjusting vapor recovery rate by adjusting opening degree of the vapor control valve 21.

First claim

The invention claimed is:

1. An oil filling nozzle with a vapor recovery function comprising:
a discharge pipe;
a vapor control valve arranged in a middle of a pipe which connects a vapor collector mounted so as to cover a circumference of the discharge pipe and a vapor passage, said vapor control valve being opened and closed by liquid pressure in a main body of the nozzle, the vapor control valve including:
a valve seat; and
a valve element moveable relative to the valve seat, the valve element being seated against the valve seat when the vapor control valve is closed and being spaced from the valve seat when the vapor control valve is open, the valve element including a first tapered surface associated with a first opening degree of the vapor control valve and a second tapered surface associated with a second opening degree of the vapor control valve; and

an adjuster configured to adjust a vapor recovery rate by adjusting an opening degree of the vapor control valve.

2. The oil filling nozzle with vapor recovery function as claimed in claim 1 , wherein said adjuster comprises:
a spring having one end in contact with the vapor control valve and another end in contact with a spring holder; and an adjustment screw for moving the spring holder in a direction to the one end or the other end of the spring.

3. The oil filling nozzle with vapor recovery function as claimed in claim 1 , wherein a throttle portion of said vapor control valve is formed in multistage.

4. The oil filling nozzle with vapor recovery function as claimed in claim 1 , wherein the adjuster is coupled to the vapor control valve such that movement of the adjuster results in movement of the vapor control valve.

5. The oil filling nozzle with vapor recovery function as claimed in claim 1 , wherein the first tapered surface is angularly offset from the second tapered surface.

Assignees

• Tatsuno Corp

Inventors

• Xia Jianyoung
• Sato Kanan

Classifications

• B67D7/54 Primary

  with means for preventing escape of liquid or vapour or for recovering escaped liquid or vapour (B67D7/44 takes precedence) · CPC title

• B67D7/048 Primary

  Vapour flow control means, e.g. valves, pumps · CPC title

• B67D7/48

  by making use of air suction through an opening closed by the rising liquid · CPC title

• B67D2007/545

  Additional means for preventing dispensing of liquid by incorrect sealing engagement with the tank opening of the vapour recovering means, e.g. bellows, shrouds · CPC title