FR2615502A1 - AUTOMATIC DISPENSING GUN FOR THE FUEL DISPENSER PIPE OF A FUEL DISPENSER - Google Patents

Abstract

IN THIS AUTOMATIC DISTRIBUTION GUN FOR THE FUEL DISTRIBUTOR HOSE OF A GASOLINE DISTRIBUTOR, IN PARTICULAR FOR THE DISTRIBUTION OF DIESEL FUEL, CONSISTING OF A CASE, A DISTRIBUTOR TUBE ENGAGED IN A BOOTS TUBING AND A CAPTURE OUTSIDE, THE CHUTE FOR THE COLLECTION OF THE OUTER RETURN IS COMPLIED WITH AN ANNULAR ELEMENT WHICH SURROUND THE DISTRIBUTOR TUBE IN THE REGION OF THE CASING TUBING. THE COLLECTOR CHUTE FOR THE EXTERNAL RETURN 8 IS COMPLIED WITH THE FRONT FACE 9 OF A SLEEVE 5 WHICH INCLUDES A PERIPHERAL RECEPTION CHAMBER 10. THE COLLECTOR CHUTE FOR THE EXTERNAL RETURN 8 COMMUNICATES WITH THE RECEPTION CHAMBER 10 THROUGH THE INTERMEDIATE RECESSES OR BALLS 11.

Description

The invention relates to an automatic dispensing gun for the hose.

  fuel dispenser of a petrol dispenser, especially for dispensing

  Diesel fuel, including a case, a distribution tube

  stopper engaged in a boot pipe and a collecting chute for the external return, the chute for collecting the external return being shaped on an annular element which surrounds the distributor tube in the region

  housing tubing. By guns of dis-

  automatic dispensing of pistols including the dispensing tube

  teur is engaged in the fuel tank of a motor vehicle to be refueled and which ensure the automatic interruption of the dispensing operation as soon as the fuel level inside the tank reaches the mouth of the dispensing tube. The term external return designates the

  fuel residue flowing back over the fuel tube

  wet damper during the refueling operation when the dispensing gun is raised, with the dispensing tube, towards the petrol dispenser and / or

hung up on it.

  In the well known automatic dispensing gun, the annular element is a chute which is threaded or shaped on the dispensing tube, which represents a drawback. The chute collects, of course, the outside return but it drips at least partially when the

  dispensing gun is taken over for a new operation-

  that the distributor tube is direct

  downwards for engagement in the inlet manifold of a motor vehicle fuel tank. Dripping fuel is annoying, especially when it comes to diesel fuel, because

  it does not evaporate and fouls the soil. But the foul-

  This also affects the housing of the dispensing gun.

  bution when the chute overflows.

  The phenomena described above and apparently simple are complex: When the supply of a

  motor vehicle is terminated by automatic disconnection

  than the dispensing gun, the dispensing tube is wetted outside, over a height of approximately 3 to 5 cm, by the fuel and by fuel foam. The

  no one carrying out refueling generally leaves-

  drip the dispensing valve only during

  seconds before returning then, with the tube available

  tributor raised, towards the petrol distributor. Here, the dispensing valve is usually hung with the dispensing tube facing up. She stays in this

  position until a new customer removes it again.

  During this time, the external return accumulates and flows slowly along the distributor tube. In addition to the installation of external return chutes, other measures

  have already been tried for the capture of the external return.

  Thus, it has been proposed to thread over the distributor tube drip screens in the form of annular discs produced

  in a particularly absorbent material. Such barriers

  drops work very well at first. But they soak quickly. In the saturated state, they are not only ineffective, but annoying because the operator can get dirty

  in contact with such a drip stopper. Replacement of shields

  soaked drops is unpleasant work. Since the external return has not been controlled so far, we have

  started processing at great expense, in particular the distributors

  Diesel fuel stopers so that the distribution valve must be engaged with the distributor tube

  directed downward in a valve suspension

  quiver in the form of a quiver. In this way, the tube

  Tributor can drip completely inside as well as outside. The system is complicated. Added to this is the fact that the quiver-shaped container must be freed from time to time from the internal return and the external return which accumulate therein. User is embarrassed

by unusual handling.

  The object of the present invention is to improve a dispensing valve of the aforementioned kind in such a way that, when the dispensing gun is hooked with the dispensing tube raised, the external return is not only recovered in a certain manner, but that it also returns to the tank. motor vehicle when the dispensing gun is handled in the way

  usual during the next refueling.

  According to the invention, this object is achieved by the fact

  that the chute for collecting the external return is con-

  formed on the front face of a sleeve which includes a peripheral receiving chamber, and which the chute for collecting the external return communicates with the

  reception via recesses and bores.

  In the simplest case, the chute for collecting the external return consists of a peripheral notch and the associated surface of the distributor tube. The reception chamber can also be shaped in different ways. It goes without saying that its volume is much greater than that of the collecting chute. The receiving chamber may be constituted, for example, by a peripheral external flaring surrounding the dispensing tube so that said tube somehow forms the other

  wall of the reception room. The sleeve can be part of

  tie of the shoemaker and it can also be secured to the tube

  tributor. Within the framework of the invention, provision is made for

  subsequently mount the sleeve on the distributor tube.

  This allows to equip dispensing guns already

  installed and thus transform them into pistols for

  tribution according to the invention. In this context, a preferred embodiment of the invention is characterized in that the seal between the sleeve and the housing pipe is produced by a seal disposed between the sleeve and the dispensing tube. The sleeve can be provided, at its

  front side, a disc of protection against projections

  attached to the outside which protects the operator from the

  distribution tolet against projections during the operation

supply ration.

  In the dispensing gun according to the invention, the chute for collecting the external return and the

  reception room are interconnected by a plu-

  reality of bores or recesses. In this way, the external return flows into the receiving chamber. The layout and design have been chosen in such a way that the fuel accumulated in the receiving chamber requires a considerable time to flow from the receiving chamber when the distribution tube of the distribution gun is directed downwards, to run along the distributor tube and to drip from it. When

  the distributor tube is pointing upwards or that the

  distribution tolet is hung in a suitable way,

  the fuel collected first in the cap chute

  tage of the external return flows slowly, through the

  holes or holes in the reception room. For this, the time available is sufficient since there is always a certain

  time between two refueling operations.

  The same applies to self-service petrol stations where, regularly, the end of the refueling operation

  is first followed by the regulation of the quantity of car-

  debit billed. The invention takes advantage of the fact that gas station attendants and also customers of self-service stations normally go to the motor vehicle to be refueled by holding the dispensing tube more or less directed upwards and that they do not tilt the tube

  distributor only afterwards in order to be able to introduce it into the

  vehicle tank filler neck. For the pis-

  distribution tolet according to the invention, it is only when

  the distributor tube is tilted downward as the carbu-

  rant begins to flow from the bore holes or recesses

  tively small which connect the receiving chamber to the collecting trough of the external return. Fuel in

  flowing is distributed more or less in the lower part

  of the catchment trough and then flows along the

  distributor tube in the tank of the motor vehicle.

  The time necessary for a regular refueling always allows a sufficiently complete evacuation of the reception room. It is recommended that the dimensions of the

  chute for collecting the external return and hollow

  elements or bores establishing communication between said chute and the receiving chamber take account of the

  viscosity of the fuel for which the dispensing gun

  tion is planned. For Diesel fuel, we will choose

  generally larger dimensions.

  The following description, next to the drawings

  appended as nonlimiting examples, will allow

  understand how the invention can be put into practice.

  Figure 1 shows, partially in section, a side view of an automatic dispensing gun according to the invention. FIG. 2 represents the detail A of FIG. 1,

  with the sleeve and the dispensing tube fully cut.

  The automatic dispensing gun shown

  in the figures is intended for the fuel distributor tube

  from a gas station distributor. It's about

  including a diesel fuel dispensing gun.

  It basically includes a shoemaker 1 and the distri-

  stopper 3 mounted in a housing tube 2. The tube

  tributor 3 is surrounded by an annular element 5 on the front face of which is formed a chute 4. The element

  5 surrounds the distributor tube 3 in the region of the tube

  bootmaker lure 2. Inside the bootmaker 1 is an automatic control system 6 designed so well

  known per se which therefore does not require a description here

  particular. The automatic control system 6 comprises a filling tube 7 inside the distributor tube 3. It is apparent in particular from FIG. 2 that a chute for collecting the external return 8 is formed on the front face 9 of a sleeve 5 which includes a peripheral receiving chamber 10. The collecting chute for the external return 8 communicates with the receiving chamber by means of recesses or bores 11 .. In the embodiment and according to the preferred embodiment of the invention, the chute for collecting the

  external return 8 is constituted by a peripheral notch

  risk 8 and through the associated surface 12 of the distributor tube

  3. The reception chamber 10 consists of a small flare

  peripheral and also of the associated wall of the dis-

  tributor 3. The seal between the sleeve 5 and the casing pipe 2 is ensured by a seal 13 placed between the sleeve 5 and the distributor tube 3. It appears from FIG. 1 that the sleeve 5 can have on its front face a splash protection disc 14 attached externally. The chute for collecting the external return 8 has, for example a chute width of only about 1 mm. On this point, it consists of a slit and contributes to the increase in the time interval which must pass before the fuel accumulated in the receiving chamber 10 flows along the distributor tube 3 and s 'drip when said distributor tube is tilted downward. It is surprising to note that the fuel no longer drips on the external return collection spout 8. The spout 4 also contributes to the fuel

  leaving the collecting chute 8 does not drip

  uncontrolled flow or does not flow towards the case 1 before the distributor tube 3 has been engaged in the

  motor vehicle tank filler neck.

  When the connection between the collecting chute for the re

  exterior tower 8 and the receiving chamber 10 is constituted

  killed by bores 11 and in the case of diesel fuel, it is recommended to provide bores 11 with a passage section of 1 to 2 mm. Preferably, the passage section is approximately 1.3 mm2. Four holes can then be provided in a distributed manner on the periphery. In the event that the flow of fuel accumulated in the receiving chamber 10 requires too much time, the above-mentioned bores 11 or the recesses as well as

  the width of the trough 8 for collecting the external return

  laughing. For too rapid flow, it is advisable to reduce the diameter of the elements mentioned. When the dispensing gun is hooked into the manifold

  filling a motor vehicle tank, the con-

  flow conditions are always such that the fuel accumulated in the receiving chamber 10 can flow because the receiving chamber 10 is also ventilated by one or more bores 11 or recesses which connect the collecting chute 8 for the external return and an

reception room 10.

Claims (5)

  1. Automatic dispensing gun for the fuel dispensing pipe of a petrol dispenser, in particular for dispensing diesel fuel, comprising a housing, a dispensing tube engaged in a   housing tubing and a collection chute for the re   external tower, the chute for collecting the external return being formed on an annular element which surrounds the distributor tube in the region of the casing pipe, characterized in that the collecting chute for the external return (8) is conformed to the front face (9) of a sleeve (5) which comprises a peripheral receiving chamber (10), and that the collecting chute   of the external return (8) communicates with the receiving chamber   tion (10) by recesses or bores (11).   2. Dispensing gun according to claim 1, characterized in that the collecting chute of the   external return (8) is constituted by a peripheral notch   risk and by the associated surface (12) of the distributor tube (3).   3. Dispensing gun according to one of the claims   cations 1-or 2, characterized in that the   reception (10) consists of a peripheral flare.   4. Dispensing gun according to any one   claims 1 to 3, characterized in that the sealant   cheity between the sleeve (5) and the housing manifold (2) is ensured by a seal (13) disposed between the sleeve (5) and the distributor tube (3).   5. Dispensing gun according to any one   of claims i to 4, characterized in that the   sleeve (5) has, on the front face, a pro-   protection against projections (14) attached externally.