FR2468012A2 - APPARATUS FOR TRANSPORTING A LIQUID OR GASEOUS FLUID - Google Patents

Abstract

The present invention relates to an apparatus for transporting a liquid or gaseous fluid. Apparatus characterized in that to the body are fixedly attached several heat tubes or elongated elements similar to heat tubes, placed transversely to the fluid stream, the longitudinal direction of which is approximately parallel to the longitudinal direction of the blades, which are each mounted on the body by their ends, and which are each affected, in one of their axial end regions, to the influx fluid stream which is, for example, the incoming air stream or outside air and in their another axial terminal region, to the discharge fluid stream which is, for example, the outgoing air or exhaust air stream.

Description

The main patent relates to an apparatus for transporting a liquid fluid

  or gaseous, having a body for driving

  the fluid and a rotor mounted so that it can rotate,

  dragged by motor, used to carry fluid through the body and carrying, on a tree or element that plays the role

  of trees, a number of blades succeeding each other in the direc-

  rotation and extending, on the one hand, in the appropriate direction

  approximately radially outward, and, on the other hand, on the

  axial length of the rotor, the apparatus in which the volumetric flow-

  the body through the body is subdivided by a layer of

  paration provided inside the rotor in a flow of influx,

  which is, for example, the flow of incoming or outgoing air

  and an evacuation current, which is, for example, the

  outgoing air or exhaust air.

  The main patent is intended to provide an apparatus for

  the species in question, which at the same time serves as a system of

  energy consumption, in particular heat recovery,

  realizing a heat recovery system that is not very

  brant, safe operation, low maintenance, simple and practically advantageous, in which one does not need

  to apply additional energy for the transfer of energy

himself.

  The present invention aims at developing the idea

  which is the basis of the main patent, to provide a

  species in which the energy losses, ie the flow losses, are still avoided more

  and whose manufacture is simpler and cheaper than

  with improved resistance properties.

  For the above purpose, the invention proposes an apparatus

  characterized in that the body is fixedly attached several heat pipes or elongated elements similar to heat pipes, placed transversely to the fluid stream, whose longitudinal direction is approximately parallel to the longitudinal direction of the blades, which are each mounted on the body by their ends, and which are each assigned, in one of their axial end regions, to the inflow fluid stream which is, for example, the incoming air stream or the outside air stream and in their other axial end region, the exhaust fluid stream which is, for example, the outgoing air or exhaust air stream. Heat pipes or elongated elements similar to heat pipes may, for example, be aligned parallel to the axis of rotation

  of the rotor and preferably they are arranged along the

  inner king of the body. In this constitution, a notable advantage is obtained, namely that disturbances are avoided.

  flow in the rotor. Other advantages besides the manufacturer

  simpler and less expensive, are still

  fact that the problems of resistance are reduced or solved.

  If the appliance is in the form of a fan with

  radially or transversely, the heat pipes can

  to be successively spaced equal spacings on the inner wall of the body or they are arranged on this wall, in several rows that succeed one another in the radial direction. In such a case, the heat pipes must not be

  only on one side, because it is not possible to

  completely freeze cold or hot air. However, in another possible arrangement, heat pipes or elongated elements similar to heat pipes are closely

  close together and form the wall of the body which, in

  in this case, is covered externally with a layer of

  heat insulation; to improve heat transfer,

  cooling fins directed radially towards the interior

  may be provided on the inner side of the heat pipes

  or similar elongated elements.

  Advantageously also, the heat pipes are provided in the exit region of the body and preferably, the number of radially successive rows of heat pipes increases towards the outlet or the end of the outlet region. For example, heat pipes may have

  such a relative arrangement within the rows and

  may have between them a relative provision such

  that the heat pipes together form a species of

  positive directional forces that force the outgoing fluid stream to follow a kind of logarithmic trajectories. With this arrangement, in which the heating tubes together form flow-shaped arrangements, the flow losses can be reduced because, on the one hand, the disturbances exist only on a limited part of the circumference of the rotor. , and that, on the other hand, the flow

in itself is improved.

  Advantageously also, the heat pipes are arranged

  concentrically around the rotor - in a single row or in several concentric rows - and preferably

  outer part of the body, which covers the outer heat pipes

  is composed of two halves of bodies succeeding one another

  axial direction, separated in the region of the separating wall.

  ration, which are movably mounted on the other body halves and can be rotated relatively. The advantage of this embodiment is that for each of the air currents, hot and cold, one can rotate a half body volute around the fixed inner part, the two halves can be oriented relatively in any way so that the incoming and outgoing air currents can be directed in opposite directions or

  any angle, depending on the circumstances of the case.

  If the apparatus is in the form of an axial fan, the heat pipes may, for example, be aligned radially and, seen in the direction of flow, they may be

  downstream or upstream of the rotor, for example in the direct

  tor. Examples of embodiment of the object of the invention are represented by the drawings, in which: FIG. 1 schematically shows in side elevation a first embodiment of the invention; Figure 2 is a view similar to Figure 1, showing an alternative embodiment of the invention; Figure 3 schematically shows in side elevation another variant of the invention;

  FIG. 4 is a partial elevation view from the front corresponding to

  laying in Figure 3, on a larger scale; Figure 5 shows the arrangement of Figure 3, on a smaller scale, and at another stage of operation; FIG. 6 shows in side elevation in vertical section, on a larger scale, a detail of a variant of the arrangement of FIG. 1, FIG. 7 is a sectional view along the line VII - VII of FIG. 6, and FIG. 8 is a side elevational view of another variant

of the invention.

  Figure 1 shows a device in the form of a fan

  radial, used to transport a liquid or gaseous fluid,

  carrying a body 1, which serves to conduct the fluid, and a rotor 2 rotatably mounted, driven by motor, and provided with an axis 3, for carrying the fluid through the body

  and carrying, on a tree or on an element playing the role of ar-

  rotational axis 3), a number of blades 4, which succeed each other in the circumferential direction, move, on the one hand, outwards in an approximately radial direction and extend, on the other hand, on the axial length of the rotor. In addition, the arrangement is such that the volumetric flow rate of fluid which passes through the body of the apparatus is subdivided by a separation layer provided inside the rotor, directed perpendicular to the axis of the rotor and therefore parallel to the plane of the drawing in the exemplary embodiment shown, in a stream of inflow fluid, for example the incoming air stream or outside air, and a discharge fluid stream, for example the

  outgoing air or exhaust air. The first few

  gures do not show well the partition but it is indicated

  in Figure 4. Furthermore, the constitution and arrangement

  partition are indicated by the main patent where it is represented at 7 in FIG. 1, at 31 in FIG.

3 and 45 in Figure 5.

  According to the invention, the body is fixedly attached to several heat pipes 6 or similar elongated elements, whose longitudinal direction is approximately parallel to the longitudinal direction of the blades, as can be seen in Figure 1, and which are each arranged on the body by

24680 12

  their ends. In addition, the arrangement is such that at one of the axial end regions of each of the tubes is affected the influx fluid flow, for example incoming air or outside air, and that the other terminal axial region of each is assigned the evacuation fluid stream, for example, exhaust air.

so much or exhaust air.

  As already explained in the main patent, each of the heat pipes is in itself known manner a pipe section hermetically sealed at its two axial ends, internally provided with a lining of a porous material having cavities, which communicate freely between them on all sides, for example of sintered metal, metallic cloths

  or felt-like textile knits, of several

  networks of fine mesh, etc., and filled with a liquid working fluid in exactly dosed amount corresponding to its

  power. As we know, at any operating temperature

  the liquid and vapor phases of the working fluid are

  balanced. When one end of the pipe section, preferably

  In the form of a section of finned tube, is bathed by a stream of hot air, a part of the liquid working fluid which is in equilibrium with its vapor evaporates, the steam then goes to the other end of the tube that is bathed by

  a colder current of air and condenses to it by yielding a

  their evaporation previously absorbed. The temperature level

  of the working fluid, that is to say the temperatures of

  densification and evaporation, are always established in such a way that there is a balance between the heat absorption and the heat flow of the system. In the embodiment of Figure 1, as already described in the main patent, the radial fan preferably double flow begins, during its rotation, by transporting air radially outwardly and, for example, this air, which may be hot, gives heat to the fluid contained in the heat pipes of the body which, in turn, in the manner described above, again give heat to the fluid transported in the second part of the radial fan with double flow. Thus, in a simple and inexpensive way, a good transport and a good exchange of

heat are assured.

  In the variant of Figure 1, the heat pipes are aligned parallel to the axis of rotation of the rotor, they are arranged along the inner wall of the body. Right here,

  the heating tubes follow one another in preference to

  uniform cements on the inner wall of the body; they can

  may be arranged in several rows in succession

  radial or in a single row.

  In the variant of FIGS. 6 and 7, the heat pipes

  are not provided as independent elements

  at the wall of the body, they themselves form the wall of the body.

  These heating tubes 7 or similar elongate elements are closely juxtaposed and form the wall of the body which is coated externally with a layer 8 of heat-insulating material;

  they have a rectangular or square section. These heat tubes

  similar elongated elements or elongated elements

  may be attached to the body by their ends, but

  they can also be interconnected. Depending on the mode of

  In Figure 6a, the body wall is in a nest

  and composed of two halves 9, 10 each having a sec-

  sinuous arrangement, the recesses 11, 12 of which are opposed to those of the other half, and which are assembled so that the recesses 11, 12 of the two halves are opposite each other and

  together form the heating tubes or elongated elements

  Thirteen 13 with rectangular or square section. In all these

  embodiments of FIGS. 6 and 7, the heat pipes

  or similar elongated elements each carry, internally,

  radially directed cooling fins 14

  inward, transverse to the axis, situated in the direction

  circumferential circumference of the rotor and ensuring better

mission of heat.

  If one wants to obtain advantages as to the flow technique in a radial fan or possibly also

  a cross-flow fan, it is possible to adopt the

  FIG. 2, wherein the heat pipes or similar elongate members are provided in the outlet region 16 of the body 17, which surrounds the rotor 18. The number of

  rows of heat pipes which follow one another

  diale increases towards the exit or the end of the

  region of exit, as can be seen in Figure 2, on the

  only four rows of these heat pipes are located just in the outlet region and further back, a number decreasing continuously until only one row remains. The tubes have such a relative arrangement within the rows and the rows have a relative arrangement between them such that the heat pipes together form a kind of air director devices as indicated at 19, which imposes on the flow

  outgoing fluid to follow a kind of logistic trajectories.

  thmiques. In this way, we can achieve that the losses

flow are low.

  In the variant of Figure 3, the heat pipes 20, 21 are arranged concentrically around the rotor and on at least a portion of the circumference of the rotor they are arranged around

  of it in one row or they can be

  placed in several concentric rows as seen in Figure 3. The advantage of this arrangement is that the volutes of the body can be rotated relatively

  hot and cold and drafts may have direct

  different conditions. For the above purpose, as seen on a larger scale in Figure 4, the outer wall 22 of the body which externally covers the heat pipes 20 is formed of two body halves 23, 24, which follow each other in the direction

  axial, are separated in the region of the partition 5 and are

  moving on the other halves of the body as

  25 and 26 so that they can be rotated relative to each other

  tively. In FIG. 3, the directions of the current entering and

  outgoing current coincide, in Figure 5 these two direc-

  27 and 28 diverge, they are parallel, but in opposite directions. It can be seen that by relatively rotating the two halves 23 and 24, any angles can be formed between them.

  directions of incoming air and outgoing air.

  The variant of FIG. 8 shows the application of the invention

  to an axial fan. Here, the heating tubes 30 are aligned radially and, seen in the direction of flow, they may be upstream or downstream of the rotor, for example in the director device. The heat pipes are fixed at one end, the outer end 31, to the circumferential wall 32 of the body and at their inner end 33 to a carrier element 34 integral with the body, disposed coaxially.

  at the hub 35, which carries the blades 36. The partition or layer of

  paration is not, in this case, perpendicular to the axis of rotation

  the body as in the other examples of execution, but

  concentric with the axis 37, it is indicated at 38. The element

  For example, the driver 34 may carry the rotor drive motor which may, for example, drive the hub carrying the blades. In the present case, according to embodiments not particularly shown, the apparatus may be in the form of a radial or axial pump which serves to transport fluids

  while recovering energy.

Claims (14)

-R E V E N D I C A T I 0 N S-   1. Apparatus for transporting a liquid or gaseous fluid,   carrying a fluid conducting body and a mounted rotor   rotatable, motor-driven, serving as a trans-   carrying the fluid through the body and carrying, on a shaft or shaft element, a number of blades succeeding one another in the direction of rotation and extending, on the one hand, in an approximately radial direction outwardly, and, secondly, over the axial length of the rotor, apparatus in which the volumetric flow rate through the body is subdivided by   a separation layer provided inside the rotor in a   This is, for example, the inflow or outflow of air and an exhaust stream, which is, for example, the outgoing air or exhaust air stream, as follows. Moon   any of claims 1 to 15 of the main patent,   characterized in that the body is fixedly attached to several heat pipes or elongated elements similar to heat pipes, placed transversely to the fluid stream, whose longitudinal direction is approximately parallel to the longitudinal direction of the blades, which are each mounted on the body by their ends, and which are affected each,   in one of their axial end regions, aware of fluid   of influx which is, for example, the flow of air entering or outside air and in their other axial end region, the evacuation fluid stream which is, for example, the current   outgoing air or exhaust air.   2. Apparatus according to claim 1, in the form of a fan   radial or transverse current apparatus, characterized in that   the heat pipes or similar elongated elements are   parallel to the axis of rotation of the rotor.   Apparatus according to claim 2, characterized in that   that the heating tubes are arranged along the wall   body, in several rows in succession radial or in a single row.   Apparatus according to any one of claims 2 and 4   3, characterized in that the heat pipes, in several rows,   radially or in a single row, succeed each other preferably at uniform spacings along the body wall.   5. Apparatus according to any one of claims 1   and 2, characterized in that the heat pipes or elements   similar lengths, presenting, for example, a recom-   tangular or square, are closely juxtaposed and form themselves the wall of the body, covered externally with a layer of heat-insulating material.   6. Apparatus according to claim 5, characterized in that the heating tubes or similar elongated elements which follow one another closely are fixed by their ends.   to the body and / or may, for example, be interconnected.   7. Apparatus according to claim 5, characterized in that the wall of the honeycomb body is composed of two   halves each having a sinuous section, the recesses being each   opposed to those of the other half, the halves being assembled so that the hollows of the two halves are opposed to each other and together form the heat pipes or   similar elongate elements with rectangular or square section.   Apparatus according to any of claims 5   to 7, characterized in that the heat pipes or elements   similar elongated internally   cooling directed radially inward.   Apparatus according to any one of claims 1   and 2, characterized in that the heat pipes are provided in the outlet region of the body and that preferably the number of radially succeeding rows of heat pipes increases towards the outlet or the end from the exit area.   10. Apparatus according to claim 9, characterized in that the heat pipes have a relative arrangement such   within the rows and that the rows have between them a   relative position such that the heat pipes form between them a kind of air guiding devices which force the outgoing fluid stream to follow a kind of trajectories logarithmic.   Apparatus according to any of the claims   1 and 2, characterized in that the heat pipes are   laid horizontally around the rotor, in a single row or   in several concentric rows.   Apparatus according to claim 1, characterized in that   the outer wall of the body covering the heat pipes   outwardly, is formed of two axially succeeding body halves separated in the partition region movably mounted on the other halves of the partition wall.   body and that can be rotated relatively.   Apparatus according to claim 1, in the form of   axial tilator, characterized in that the heat pipes are radially aligned, and preferably seen in the direction of flow, they are downstream or upstream of the rotor and or in the steering device.   Apparatus according to claim 13, characterized in that   that the heat pipes are fixed by their outer end   than the circumferential wall of the body and by their   mity inside a carrier element integral with the housing, coaxial   hub and can advantageously contain the drive motor. rotor.