ES2239903B1 - VARIABLE PRESSURE REGULATOR FOR GAS BRACKET. - Google Patents

Abstract

Variable pressure regulator for gas torch, the regulator being integrated in the handle consisting of inner body (4) and housing (6), and the regulator consisting of a membrane (1) prepared by means of two springs (2), (3), which press it in contrast to let a small flow of gas under pressure (P); characterized in that one of the springs (3) is housed in an adjustable manner in a pocket (51) formed by a screw (5), threaded directly or indirectly to the inner body (4) of the torch and said screw (5) being operable from the exterior by means of an access hole (61) formed in the housing (6). Application in gas torches.

Description

Variable pressure regulator for torch gas.

The present invention relates to a regulator of variable pressure for gas torch.

In gas torches, pressure regulating devices are already known to allow a small flow of pressurized gas to pass from a primary gas inlet chamber (in communication with the supply cylinder) to a secondary gas outlet chamber (in communication with the torch burner). It is also known to have these regulators factory inside the torch itself, which means that the regulation is of constant pressure and determined at the source without the possibility of subsequent regulation " in situ " by the user according to their real needs of each concrete work.

The object of the invention is an integrated regulator in the torch itself and that allows the user to vary the pressure of the small flow of gas supplied from the primary chamber of gas inlet to the secondary gas outlet chamber.

The regulator according to the invention, integrated in the own torch, consists of a pre-tared membrane by means of two springs, which press it in contrast to let a small flow of pressurized gas from a chamber primary gas inlet to a secondary outlet chamber of gas when the closing forces and the forces of opening. In its operation:

a) the membrane is pressed in one direction (from opening) by the action of a first spring housed in a fixed way in a pocket formed in the inner body of the torch gas;

b) the membrane is pressed in one direction opposite (closing) by the action of a second spring housed from adjustable shape in a pocket shaped on a screw;

c) the screw is directly threaded or indirectly to the torch body and is rotatable from the outside through an access hole formed in the housing of the gas torch;

d) the screw has a limiter path that establishes the minimum and maximum pressures between which is included the outlet pressure.

In particular, the gas flow pressure is between O ≤ P ≤ 4 Bar and, preferably, between 2 ≤ P ≤ 3 Bar.

To better understand the purpose of this invention, a preferred form of practical realization, susceptible to accessory changes that do not distort its foundation.

Figure 1 represents a partial section Detailed of a gas torch with variable pressure regulator object of the invention integrated in the torch itself.

This figure shows the structuring and components as well as their arrangement in the torch body itself for a non-limiting example of
practical realization.

An example of practical, non-limiting embodiment of the present invention.

The object of the invention is a pressure regulator variable for gas torch.

The regulator object of the invention is integrated in the torch itself and consists of a membrane (1) pre-tared by means of two springs (2), (3) that the they press in contrast to let a small flow of gas under pressure from a primary chamber (C 1) of gas inlet to a secondary chamber (C2) of gas outlet when balance closing forces and opening forces.

According to the embodiment shown -see figure 1- the spring (2) that presses the membrane (1) in a direction of opening is fixedly housed in a pocket (41) formed in the inner body (4) of the gas torch.

This spring (2) continuously presses the membrane (1) in one direction (opening) with interposition of a pusher (7a).

The spring (3) that presses the membrane (1) into opposite direction is housed, in an adjustable way, in a pocket (51) formed in a screw (5).

This screw (5), which has a conformation (52) to act from outside (by conventional screwdriver, star screwdriver, wrench Allen or any other similar manual tool), it is threaded directly or indirectly to the inner body (4) of the torch gas.

The screw (5) is accessible and manipulable from the outside with the appropriate tool and has a travel limiter that establishes two extreme stops beyond which it cannot move forward / backward.
yield the screw (5). These extreme stops correspond to and establish the maximum and minimum force of the spring (3) and, respectively, the maximum (P_ {)} and (P_ {)) minimum pressures of the spring (3), which always include the gas outlet pressure.

In the embodiment shown, the screw (5) thread (50) in a retainer (8) which, in turn, holds the membrane (1) threading (80) into the inner body (4) of the gas torch.

The spring (3) continuously presses the membrane (1) in one direction (closure) with interposition of a pusher (7b).

To enable the action on the screw (5) a hole (61) formed in the housing (6) is provided of the torch and axially facing the conformation (52) of said screw (5). The minimum and maximum spring force (3) determines the minimum and maximum pressure between which is always included the gas outlet pressure. In general, this pressure P is always between P_ {1} (minimum) and P_ {2} (maximum): P_ {1} \ leq P \ {P2}; where P_ {1} = O Bar and P_ {2} = 4 Bar

More particularly, this pressure P is always between P_ {1} (minimum) and P_ {2} (maximum): P_ {1} \ leq P \ leq
P2; where P_ {1} = 2 Bar and P_ {2} = 3 Bar.

Claims (4)

1. Variable pressure regulator for gas torch, the regulator being integrated in the handle consisting of inner body (4) and housing (6), and the regulator consisting of a membrane (1) pre-tared by means of two springs (2 ), (3), which press it in contrast to let a small flow of gas under pressure (P); characterized in that one of the springs (3) is housed in an adjustable manner in a pocket (51) formed by a screw (5), threaded directly or indirectly to the inner body (4) of the torch and said screw (5) being operable from the exterior by means of an access hole (61) formed in the housing (6). 2. Variable pressure regulator for gas torch, according to the preceding claim, characterized in that the screw (5) has a travel limiter that establishes the minimum (P_ {}) and (P_ {}) maximum pressures between which the output pressure P_ {1} \ leq P \ leq P2} is included. 3. Variable pressure regulator for gas torch, according to previous claims, characterized in that in particular, the pressure (P) of the gas flow is between O ≤ P ≤ 4 Bar and, preferably, between 2 ≤ P ≤ q 3 bar 4. Variable pressure regulator for gas torch, according to previous claims, characterized in that the membrane (1) is pressed in one direction (opening) by the spring (2) and in the opposite direction (closing) by the spring (3) to allow a small flow of pressurized gas to pass from a primary chamber (C_ {{}}) of gas inlet to a secondary chamber (C_ {}}) of gas when the closing forces and the opening forces are balanced .