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Vortex tube

Inactive Publication Date: 2009-10-15
SILVENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0005]The present invention relates to a vortex tube for the generation of cold air. The vortex tube comprises a tube body with a wall, the inner wall surface of which forms an inner channel with a circular-cylindrical cross section. A vortex generator is located in a first end of the channel and a flow limiting body (a resistance) is located in a second end of the channel, and an outlet for hot air is also arranged at the second end of the channel. The vortex generator has an op

Problems solved by technology

However, embodiments are conceivable, where this is not the case.

Method used

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Embodiment Construction

[0039]With reference to FIG. 1, a vortex tube T according to prior art is shown. In FIG. 1 it is schematically shown how air from a source, not shown, of compressed air, is fed into the tube T via an inlet 1. The inlet I is arranged perpendicularly in relation to the longitudinal axis of the tube T. From the inlet I air passes to a vortex generator V, which may comprise vanes or channels (not shown) to put the air into rotation. A vortex of air moves from the vortex generator V and in a direction to the right in the figure. In the right end of the tube T the air vortex meets a resistance M. At the resistance M the air vortex will be divided into a hot air flow leaving the vortex tube through an outlet H and into a cold air flow turning back and leaving the vortex tube through an outlet K for cold air. Vortex tubes of this kind are today used in industrial applications such as e.g. for cooling of tools.

[0040]In FIGS. 2 to 25 a first embodiment of a vortex tube I for the generation of...

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Abstract

The invention relates to a vortex tube (1) for the generation of cold air. The vortex tube comprises a tube body (2) with a wall (5), the inner wall surface (6) of which forms a channel (7) with a circular-cylindrical cross section. A vortex generator (8) is arranged in a first end (9) of the channel (7) and a flow limiting body (10) is arranged in a second end (11) of the channel (7). One or several outlet / s (12) for hot air is / are arranged at the second end (11) of the channel (7). The vortex generator (8) has an opening (13) through which cold air may leave the channel. A conduit (14) for the supply of compressed air to the vortex generator (8) runs through the wall (5) of the tube body (2) in parallel with the inner channel (7) from a rear end (3) of the tube body (2) up to an inlet (15) to the vortex generator (8).

Description

[0001]This application claims priority to Swedish Patent Application No. 0800805-4, filed on 10 Apr. 2008, the complete disclosure of which is incorporated herein by reference.TECHNICAL FIELD[0002]The present invention relates to a vortex tube designed to generate cold air.BACKGROUND OF THE INVENTION[0003]A vortex tube, also known as Ranque-Hilsch tube, is a device which is used in such cases where one wants to generate a flow of cold air. A field of application for vortex tubes may be cooling of tools, for example grinding discs. Other fields of application comprise cooling of coatings within the plastic industry, for example. In a vortex tube a flow of air is sent through a vortex generator that causes the air to rotate and a vortex of air to move inside a tube. In a second end of the tube the air vortex meets a resistance and the air flow is divided into two parts, one flow of cold air and one flow of hot air. The cold air flow moves backwards in a direction towards the vortex ge...

Claims

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Application Information

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IPC IPC(8): F25B9/02F25D19/00
CPCF25B9/04
Inventor TIBELL, RASMUS ERIK
Owner SILVENT