ES1271691U - AIR CONDITIONING SUPPLY DEVICE (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Air conditioning supply device, characterized in that it is made up of two isothermal concentric tubes that can be telescopically displaced, an inner tube (1) and an outer tube (2), so that the sliding between the two concentric tubes is It performs by means of two sets of wheels, a set of convex wheels (3) linked to the inner tube (1) close to one of its ends through a box (6) and that roll on the inner face of the outer tube (2), and a set of concave wheels (4) linked to the outer tube (2) near its opposite end through a box (5), rolling on the outer surface of the inner tube (1). (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

Air conditioning supply device

TECHNICAL SECTOR

The present invention relates to a displacement device for concentric tubes in air conditioning installations, specifically auxiliary installations for supplying air conditioning to aircraft.

The object of the invention is to provide a system that allows the air conditioning supply conduit to be easily adapted, as well as its retraction towards a position of minimum volumetric occupation when this is not necessary, all this with the minimum head losses in the flow of blown air.

BACKGROUND OF THE INVENTION

As is known, when the planes are docked for the boarding of passengers, they keep their engines stopped and the air conditioning inside the plane is carried out through external equipment, which is brought closer to the plane and through appropriate conduits are connected. to the air conditioning installation of the plane itself.

This type of equipment must present a structuring of variable geometry, so that the usual thing is to opt for bellows type ducts, which although they can be folded with a minimum volumetric occupation in an inoperative situation, said structure with multiple folds causes multiple losses of load in the incoming flow, so that either this flow ends up being insufficient or it is necessary to use much more powerful compression equipment, with the negative impact at the cost level that this entails.

At the same time, these types of systems cannot be automated in terms of their deployment and replication.

EXPLANATION OF THE INVENTION

The device that is advocated solves in a fully satisfactory way the problems previously exposed, based on a simple but effective solution.

For this, the device of the invention is embodied in a pair of concentric isothermal tubes that can be moved between them, that is to say with a telescopic nature, to adapt from the compression machine to the room that provides service at the required temperature, a maneuver that can be automated in virtue of its structure.

More specifically, in correspondence with one of the ends of the inner tube, sliding wheels are mounted on the inner surface of the outer tube, while sliding wheels are arranged on the outer surface of the inner tube at the opposite end of the outer tube.

The wheels that support / rotate on the inner face of the outer tube will be concave, while the wheels that support / rotate on the outer face of the inner tube will be convex, the wheels being mounted on bearings and the whole assembly on special boxes that are fixed. to the corresponding boarding platform, to achieve that the relative displacement between the tubes leads to the lengthening or shortening of the air supply conduit, according to the distance between the air generator equipment and the aircraft.

Preferably, the wheels will be made of nylon, supported by oscillating ball bearings, so that friction is minimal when sliding.

In this way, a mechanism is achieved in which, by virtue of the minimum internal roughness of its tubes, the pressure losses in the injected air flow are minimal, not requiring powerful air conditioning supply equipment.

BRIEF DESCRIPTION OF THE DRAWINGS

To complement the description that is going to be made below and with the aim of helping a better understanding of the characteristics of the invention, according to a preferred example of a practical embodiment thereof, a set of drawings is attached as an integral part of said description. where, with an illustrative and non-limiting nature, the following has been represented:

Figure 1.- Shows a longitudinal section view of a displacement device for concentric tubes in air conditioning installations made in accordance with the object of the present invention.

Figure 2.- Shows a sectional view of the assembly of the previous figure, according to the cut line A-A 'shown in said figure.

Figure 3.- Shows a sectional view of the assembly of figure 1, according to the cut line B-B 'shown in said figure.

Figure 4.- Shows an exploded detail of a convex wheel in the situation of being mounted in the corresponding box.

Figure 5.- Shows the assembly of figure 4 duly assembled.

Figures 6 and 7.- They show views similar to figures 4 and 5, but corresponding to the concave wheel.

PREFERRED EMBODIMENT OF THE INVENTION

In view of the figures outlined, it can be seen how the device of the invention is made up of two concentric isothermal tubes, an inner tube (1) and an outer tube (2), so that the sliding between both concentric tubes is It is carried out by means of two sets of convex (3) and concave (4) wheels, so that the convex wheels (3) linked to the inner tube (1) near one of its ends roll on the inner face of the outer tube (2), while the concave wheels (4) linked to the tube outer (2) close to its opposite end, roll on the outer surface of the inner tube (1).

Both the concave wheels (4) and the convex wheels (3) are mounted in respective boxes (5-6), boxes equipped with holes (5'-5 '', 6 '') for passage of the corresponding screws (7) of fixing to the corresponding tubes (1-2) that will include a hole for partial passage of said boxes.

The wheels, preferably made of nylon, rotate by means of ball bearings (8), their axes resting on supports (9) internal to the box.

Finally, it only remains to point out that, optionally, the mechanism could be motorized, so that its deployment and retraction is carried out in a fully automated way.

Claims (4)

1a.- Air conditioning supply device, characterized in that it is made up of two isothermal concentric tubes that can be telescopically moved between them, an inner tube (1) and an outer tube (2), so that the sliding between both tubes concentric It is made by means of two sets of wheels, a set of convex wheels (3) linked to the inner tube (1) close to one of its ends through a box (6) and that roll on the inner face of the outer tube (2) , and a set of concave wheels (4) linked to the outer tube (2) near its opposite end through a box (5), rolling on the outer surface of the inner tube (1). 2nd.- Air conditioning supply device, according to claim 1, characterized in that the boxes (5-6) are linked to the tubes (1-2) through holes made in them, internally having a support (9 ) for the axle of the wheels (3-4) by means of ball bearings. 3 a.- Air conditioning supply device, according to claim 1, characterized in that the wheels (3 and 4) are made of nylon. 4 a.- Air conditioning supply device, according to claim 1, characterized in that the wheels (3-4) are motorized.