FI120246B - The swirl - Google Patents

Description

BACKGROUND OF THE INVENTION The present invention relates to a vortex diffuser having two separate, one-piece overlapping planes at the neck portion, each of which is 5 bent into wings, and wherein the upper plane remains in place over the fold of the lower level outer periphery.

The technology of vortex diffusers is based on the placement of air deflector vents in the outlet opening, for example in the supply air diffuser, which allows the supply air to be rotated in order to efficiently mix the air entering the room. Thus, with a good mixing ratio, the supply air temperature can be lowered without causing any draft in the seating area. In addition, various solutions aim to control the blowing patterns from horizontal to vertical, for example, controlled by the supply air temperature. The cooled cold supply air is directed horizontally and the heated supply air vertically, respectively. It is possible to add to this all the angles of the blowing angle and the various temperatures of the supply air.

All known vortex diffusers consist of guide vanes of varying shapes and can be fixed or adjustable. Further, the angle of the guide vanes with respect to each other may be adjustable or the vanes may be orientable.

• Vortex flow can also be achieved with a plastic nozzle diffuser, but its problem is • M · · * ;; ·: The problem is that the airflow is too small in relation to the supply air diameter.

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In the above-described prior art vortex diffusers, the wings are. ***. can be rotated, either one at a time or simultaneously. Changing this technique from manual to actuator is either impossible or extremely expensive. Manually turning one wing at a time is laborious and time consuming.

• · · • · ·

The blow angle can also be influenced by positioning the cylinder or alignment ring% ·% ·% on the outer edges of the blades to move the supply air either horizontally or vertically: *} *: by moving the cylinder or alignment ring in the vertical direction. The problem with this solver # ·· 30 is that the energy required for the vertical blowing pattern *: * ·: disappears into the vortex movement.

2

Stacking two blade planes is also a known solution where it is easy to reduce vortex flow by increasing the free surface area, whereby the blowing pattern becomes vertical without consuming energy in the vortex flow.

One such vortex diffuser is disclosed in DE 29919753 U1. The vortex diffuser of the present 5 publications is formed by two overlapping planar plates, each with guide surfaces for controlling the flow. The plates are supported at their centers and rotate the plates relative to one another to produce a modified flow pattern. In such a solution, the attachment of the plates to the tubular flow channel detaches the flow from the edge of the channel, making it impossible to substantially reverse the direction of flow. This solution only makes the flow turn turbulent.

It is an object of the present invention to provide a vortex diffuser which avoids the above-mentioned drawbacks and enables the blowing patterns to be easily and time-saving modified.

The tubular vortex diffuser according to the invention is characterized in that the lower plane is fixed to the outer jacket and that the outer edges of the planes are at most 5 mm.

An advantage of the vortex diffuser according to the invention is that its peripheral edges ·: ··· are so narrow that they do not interfere with the supply air flowing along the inner surface of the jacket.

:. ·. 20 When the layers are spread, the supply air turns horizontally due to the Coanda phenomenon.

Similarly, when the levels are interlaced, a vertical blowing pattern is achieved with the supply air flowing directly through the vortex diffuser.

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In the following, the invention will be described in detail with reference to the accompanying drawings, which are not intended to be limiting in any way.

. . Figure 1 shows a vortex diffuser obliquely viewed from below, and

Figure 2 is a long sectional view taken along line II-II in Figure 1.

The invention relates to a vortex diffuser 1 having at its neck part two separate planes 2, 3 consisting of one piece, each of which is ♦ bent to blades 4, characterized in that only the lower plane 2 is secured to the outer jacket 5 while the upper plane 3 remains in place over the fold 6 of the outer edge of the lower plane 2.

• · 3

The outer edge a of the planes 2, 3 is at most 5 mm. The movement of the planes 2, 3 relative to each other is adjustable and lockable by a knob 7 or by an actuator mounted on a vortex diffuser.

It will be apparent to one skilled in the art that various embodiments of the invention are not limited to the above examples, but may vary within the scope of the appended claims. Thus, within the scope of the invention, even more complex vortex diffusers can be prepared, where necessary, for the examples provided.

• · t ··! ·; ·. s • · · • ♦. · • n · ···: ·: • M * • »r f ...; ··· • ♦ • · ♦ ♦♦ • • • ♦ ‘‘ ‘K:: | | | | | | | | | | · • · · ♦ ···· * «* ·! «··: ·: ♦ · · ♦ • i ♦ • ··· • · · · ·

Claims (2)

1. Vvelspridare (1) i stalk halsdel finns tva separata, frän et stycke bestaende pa varandra belägna ytor (2, 3), dud det i de bäda en del är vikta account vingar (4), and där den övre ytan (3) halls pa ovanpä den undre ytans (2) kantvikning (6), rotation deck av att den undre ytan (2) og att yttermanteln (5) och att ytornas (2, 3) ytterkant är högst 5 mm. A vortex diffuser (1) having two separate, one-piece, overlapping planes (2, 3) at its neck, each of which is bent into wings (4), and wherein the upper plane (3) stays at the outer edge of the lower plane (2); -5 over a shank (6), characterized in that the lower plane (2) is fixed to the outer jacket (5) and that the outer edge of the planes (2, 3) is at most 5 mm. The vortex diffuser (1) according to claim 1, characterized in that the movement of the planes (2, 3) relative to one another is controlled by an actuator. Patentrav 2. The cord spring (1) enligt patentkrav 1, kännetecknad av att ytornas (2, 3) rörelse i förhallande account for styrs med en ställmotor. • · s' · * • · · · · · · ······································································· · · · · · ## · »· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·ward ·wardshoodwards LEmission · · «·: ·:% ·· · • i · • · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · b · b Back % · · I · «• · # • 0 * 0 · • · • ·