NL8105412A - INJECTOR AIR TREATMENT DEVICE FOR A ROOM. - Google Patents

Description

u '- έ * 81.5119 / M / Rdm / sme

Short designation: Injector air conditioner for a room.

The invention relates to an injector-type room air conditioner, in particular for blowing large quantities of air into halls or similar large spaces with at least 44 n directionally adjustable nozzle.

DE-OS 3 000 514 discloses an air distributor having an adjustable rotary flange mounted on a connecting piece at an angle to it, one of which is connected to a jet nozzle and the other to an air supply system. The rotary flanges have a mutual inclination of approximately 15 ° and the blowing nozzle is tilted forward at an angle, preferably of approximately 15 ° with respect to the rotary axis of the associated rotary flange.

The invention also relates to high-pressure ventilation and heating, as it is used in particular in all kinds of large spaces, for example also in factory halls, sports halls and other utility spaces. The high-pressure ventilation and heating is based on the induction principle. When primary air is blown in, a four- to six-fold amount of secondary air ventilation, cooling, humidification, heating, drying and other treatment air is entrained, so that the total amount of moving air available is has five to seven times the amount of primary air blown in.

25 In heating installations with radiant and / or convection heating bodies, the warm air rises upwards, so that in rooms with a height of about 10 meters, the temperature near the bottom is about 15 ° C, while in the vicinity of the roof a temperature of of about 28 ° C. So there are 30 temperature differences of about 13 ° and more and heating 8 1 0 5 4 1 2 - 2 -? * * systems of this kind are therefore uneconomical because the higher temperatures occur near the roof or ceiling, but not where they are needed, namely near the ground. Also, in comparison with the principle of room air treatment with injection, a larger and correspondingly uneconomical number of individual heating devices becomes necessary.

In the case of room air treatment according to the injector principle, on the other hand, considerably more ambient air is set in motion, so that the heat build-up can be significantly reduced. In rooms with a height of 10 meters, only slight differences between the temperatures in the vicinity of the bottom and in the vicinity of the ceiling or roof of approximately 3 ° C occur. The energy losses determined by the accumulation of heat when using the individual heating bodies hitherto customary, are therefore advantageously avoided. In addition, fewer heating devices become necessary, so that in addition a cost saving on the investment is possible. Maintenance and repair costs are also lower because fewer devices are required.

However, when designing and constructing injector-type air handling units, it should be taken into account that the resp. the persons present to be treated must be protected from drafts, because in each room, due to the given local conditions and objectives, a different flow distribution of the blown air occurs, changes are often necessary after the installation of the device and also on later occasions changes may be necessary to adapt the air handling system to new objectives and conditions. Extensive cutting and welding operations on the supports for the blasting nozzles, the blasting nozzles and the metal sheet holders, the pipelines 8105412 * - * - 3 - etc. are then necessary in the necessary work to change the air conduction in the desired manner. to be carried out. In the above-mentioned literature reference, by loosening and operating rotary flanges, a pivoting of the blowing nozzle from its neutral position in another specific direction 5 can take place in the space. It has been found that changes of this kind are often not sufficient to achieve the desired change of flow conditions in a simple and economical manner.

The object of the invention is to improve the known room-air treatment units of the injector type, in particular to make it possible, in a simple and cost-effective manner, for the flow distribution in heated and conditioned rooms in accordance with the requirements of This can be adjusted with the slightest effort.

According to the invention this is achieved with an injector-type space air conditioner of the type mentioned at the outset, which is characterized by a pressure chamber for receiving compressed air to be blown out with blown nozzle heads mounted on its outer surface or more, having 44 or 20 blowing nozzles arranged in a head surface substantially perpendicular to the general outflow direction such that the outflow direction of each jet nozzle is individually adjustable in a predetermined angular region.

Preferably, the jet nozzle resp. jet nozzles having at their outer circumference at least two circular arc and / or elliptical grooves or other recesses lying on a circular arc or elliptical shape, in which the end face or parts or attachments of the end face can engage, the jet nozzle resp. the jet nozzles and / or the top coats are elastically deformable.

The invention will be explained in more detail with reference to the appended drawing.

8105412 k * t - 4 -

Fig. 1 is a partial sectional view of an exemplary embodiment of an injector-type space air conditioner according to the invention.

Fig. 2 is a simplified view of a top view of a preferred embodiment of a pressure chamber such as may be used in the injector-type space air conditioner of the present invention.

Fig. 3 shows a front view of a spray nozzle head as it can be advantageously used in an injector-type room air conditioner according to the invention.

Fig. 4 shows a section through a bias nozzle on the line IV-IV in Fig. 3.

Fig. 5 and 6 show sectional views of portions of the construction of a single stage pressure chamber and in particular show the configuration of the jet nozzle supports.

Fig. 7 is a sectional view of a preferred embodiment of a guide jet nozzle in a nozzle head.

Fig. 8 shows examples for the adjustment possibilities and flow formation by appropriate adjustment of the guide and outer blow nozzles of the nozzle head, the output of the nozzle support being essentially that of those shown in Figs. 5 and 6 show exemplary embodiments.

FIG. 9 shows a diagram of the amount of air expelled per hour in m / h depending on the blowing speed at the blowing nozzles in m / sec.

Fig. 10 shows a multistage, in the given exemplary embodiment, a four-stage pressure chamber in section; and FIGS. 11-13 show output examples of the application of sound-damping material in a single-stage pressure chamber partially in section.

8105412 r τ * - 5 -

In the representation of FIG. 1, it is assumed that the injector-type room air conditioner is located in the upper right corner of a large room. Installation conditions of this type may occur by spatial or other determinations, however it is generally effective to arrange injector-type room air conditioners to reduce investment costs such that the devices are substantially equidistant from each other. are distributed on the roof or ceiling of the space to be treated with air, the outer devices being at such a distance from the v / and that they can sufficiently space the space allocated to them. to treat.

Fresh outside air represented by the arrows 1 flows through the side wall 2 of the space to be conditioned via a grate 3 for fresh air and, if necessary, through a filter 3a for this air in a heat exchanger 4, in which the outgoing air to be discharged gives off some of its heat. The preheated air then enters sound flow material in a flow channel 6, through an arrangement of air valves 7 at a fan 8. The fan 8, which can optionally be an axial or a radial fan, is driven by an electric motor 10. A heating battery 11 to which heating energy is supplied is held by a support rail 12. The air flows from the heating coil 11 to a pressure chamber 13 connected thereto. At the left end of the pressure chamber 13 in the drawing, there is a jet nozzle head 14, which is connected to the pressure chamber 13 by a jet nozzle support 15. As the arrow 16 shows, the air flows out of one or more jet nozzles from the nozzle head 14, and according to the injector principle, the primary air entrains secondary air.

On the outer periphery of the pressure chamber 13 there may be openings (not shown) which are either closed by blinded nozzle heads, thus suitable covers, or in which nozzle heads are placed according to circumstances.

In the present case it is assumed that the openings are covered by blinded nozzle nozzles, so that air can only flow out of the nozzle nozzle 14 shown.

Air from the room (exhaust air), which is shown by the arrow 18, flows past sound-damping material 19 into the heat exchanger 4. Here, this air gives off its heat partly to the incoming fresh air and finally comes through an exhaust fan. 20 in free outdoor air, as indicated by arrow 21. Ambient light indicated by arrows 22 flows past sound damping material 23 through air flaps 7 to fan 8 and is reheated and fed to the nozzle head 14.

Injector-type space air conditioners of the type shown can operate with primary air amounts of from about 5,000 to 100,000 m / h. They can be used for heating and ventilation purposes; however, they are also suitable for whole or partial conditioning, cooling or humidification, etc.

The adjustment of the device for adapting to the given objectives, in particular for adapting to the spatial conditions, is then optimally feasible if the air flow to all sides can be adjusted in a simple manner at the desired angle. For economic reasons it is provided that one or more standard constructions, in particular of the pressure chamber, of the blowing nozzle heads and of the blowing nozzles can be selected.

Fig. 2 shows a top plan view of a preferred embodiment of a pressure chamber 13. In total, sixteen outflow openings are evenly spaced circumferentially. In order to simplify the drawing, blow nozzle nozzles 14 are only shown at the three lower outflow locations. At the other outflow locations, the supports 15 for the nozzle heads are shown. Instead of blowing nozzle heads, blind nozzle heads or blanking covers can be provided on the individual outflow locations, which prevent an outflow of air when no outflow of primary air is necessary in the relevant direction.

Fig. 3, which shows a view of the outflow side of a nozzle head 14, shows that a guide jet nozzle 25 is provided in the center of the cyclic head face 27, which is flanked by four outer jet nozzles 26.

Blinded nozzles 28 are provided at the other outflow locations, which prevent an outflow of air at these locations.

As can be seen from Fig. 4, the guide-jet nozzle 25 has a nozzle body 29, which is designed according to flow-technical data, in particular the cross-section of the passage for the air towards the downstream side is reduced. The same points of view apply to the nozzle bodies 30 of the outer jet nozzles 26.

The nozzle bodies 29 and 30 have ααη their circumferential grooves or similar suitable recesses, of which the first 31 and 31 respectively. 34 extend at a right angle to the axis of symmetry of the nozzle bodies. The second grooves, recesses or the like 32 resp. 35 enclose an angle of preferably 5 ° with respect to the first direction, while the grooves or recesses or the like 33 respectively. Include angles of preferably 15 ° relative to the first direction. Finally, the shown and described embodiment represents an example of the invention.

Further grooves, recesses or the like can also be provided, for instance at angles of 10 °, 20 ° and 25 ° and, if necessary, even more. Other suitable staircase divisions can also be used, for example according to the angle combinations 0 °, 3 °, 6 °, 9 °, 8105412 »ϋΓ * 8 * 12 ° and, if necessary, more, 0 °, 4 °, 8 °, 12 °, 16 ° and more if necessary as well as 0 °, 6®, 12 °, T8 °, 24 ° and possibly more. Finally, the cascading sequences need not be linear either, but they can become larger or smaller depending on the deviation from the initial state.

Preferably, the nozzle bodies 29 and. 30 of elastic yielding material and the grooves or the like are designed such that a change of the direction of the respective jet nozzle can take place, another groove or TO, for example 32, 33, 35 or 36, elastic in the respective opening of the steel snaps existing end face 27. In addition, the direction of outflow can also be changed additionally by a corresponding rotation of the nozzle body.

The described embodiment of the nozzle head 15 makes it possible, without deforming interventions, in particular without cutting or welding, to adapt the flow conditions to practically all occurring requirements and conditions. It is hereby preferable that the guide blowing nozzle 25 at least about 30 ^ of the total flow rate of 20 releases the air, while the remaining amount of air flows out through the other blowing nozzles. Generally, about 30 to 80% of the outflowing amount of air will pass through the outflow guide nozzle 25. If the air flowing out of the blowing nozzles is assumed to diverge laterally by about 5 ° to 10 °, various advantageous outflow characteristics can be achieved with the arrangement of the blowing nozzles shown in Figures 3 and 4.

When blinded blowing nozzles are provided in all openings serving the 30 outer nozzles, the air flows exclusively through the guiding blowing nozzle 25, the largest range is then obtained, so that an exit velocity of about TO to 30 m / sec can be maintained and the range until S 1 0 5 4 1 2 * -¾ - 9 - * 50 meters. In this case, a final velocity of 10 to 20 cm / sec is reached. On the other hand, when the opening intended for the guide blowing nozzle is closed by a blind nozzle, and blowing nozzles 26 are placed in the openings serving for the outer nozzles on the entire circumference, then a range of only about approximately is obtained under the same conditions. 20 to 30 meters. This can therefore be explained that the jet emitted by the combined blowing nozzle arrangement has a larger diameter overall, so that the induction effect is also increased and the energy accumulated in the total jet is consumed earlier.

Optimal conditions will generally be achieved by the fact that both the guide blowing nozzle and more outer nozzles are present. In this case, it is possible by varying the outflow characteristic arbitrarily and adapting it to the given objectives by an appropriate adjustment of the direction of the expelled amounts of air.

<piece

Unlike nozzle heads of other type, the head face 27 can be flat, so that a simpler and more economical manufacture is obtained. Within the scope of the inventive idea, further embodiments, derivative improvements and the like of the described system are possible. In particular, it is possible that the nozzle bodies 29 and 20 respectively. 30 consist of elastically deformable material, but the head surface 27. Also, the nozzle bodies 29 and 29 respectively. 30 as well as the end face 27 consist of elastically deformable material.

It is not necessary for the nozzle bodies to have continuous grooves on their circumference, but it is also possible to provide elastic attachments or the like on Sen or more blowing nozzles or on the end faces which have an extension on the end face respectively. recesses provided on the blowing nozzle or blowing nozzles can engage such that the direction of the blowing nozzle or of the blowing nozzles can be changed against the force of elastic deformation 8105412 - 10 - • Λ / r. Preferably, the grooves or other devices enabling the adjustment will measure or respond in such a way. be fitted that the blowing nozzle resp. the blowing nozzles are adjustable in all directions with respect to changes in direction of 0 °, 5 ° and 15 ° with respect to the general outflow direction.

Other stepped combinations, for example with 3 °, 4 ° and 6 ° etc., are also possible, in linear and non-linear succession. According to a further preferred feature of the invention, the direction of one or more blowing nozzles with respect to the head surface can also be caused by elastic or plastic deformation of 44n or more blowing nozzles or of the head surface or of a blow nozzle arranged between 44n or more blowing nozzles and the head surface. connecting means, for example from a plastically deformable plastic or lead connecting ring, are changed.

As shown in FIG. 4, a valve 37 may be provided in the nozzle head support 15, or in the passage to the nozzle head, which allows areas of air to be turned on or off as required. The valve 37 can conveniently be pivoted about an axis 38.

Figures 5 and 6 show preferred embodiments of outflow locations of the pressure chamber 13. Sound-damping materials 39 are suitably arranged in the outflow area. In the outer opening of the pressure chamber 13, the nozzle head supports 15 and 15 respectively. 15 'applied. The nozzle head support 15 is oriented horizontally while the nozzle head support 15 'is tilted downward by 30 ° from the outflow direction. At the left-hand end of the nozzle head support 15, shown in the drawing. 15 ', the (partially shown) 30 nozzle heads 14 are provided.

Fig. 7 shows another preferred possibility of adjusting the direction of the blowing nozzles. The blowing nozzle, in the present case, preferably the guiding blowing nozzle 25, has a spherical extension or a spherical outer surface 40, which is arranged in a guiding 41 such that the direction of the blowing nozzle is infinitely variable . The guide 41 is suitably placed in the end face 27. Preferably, the end face 27 consists of steel, while the guide 41 consists of steel or plastic. The nozzle body 40 preferably consists of rubber.

According to a further preferred feature of the invention 10, the direction of flow of the guide blowing nozzle is infinitely variable by the embodiment shown in Fig. 7, while the outer nozzles 26 according to the embodiment in Fig. 4 are at angles of 0 °, 5 ° or 15 ° can be adjusted in steps.

Fig. 8 shows examples of possible ejection directions and their adjustment areas. Both bias nozzle heads 14 are arranged such that the outer nozzles 26 can be pivoted 15 ° downward and upward and correspondingly in all other directions relative to the general direction of flow corresponding to the axis of symmetry of the blowing nozzlehead.

The flow direction of the guide blowing nozzle 25 is likewise pivotable through 15 ° downwards and upwards and accordingly in all other directions.

The lower nozzle head 14 shown in Figure 8 has substantially the same adjustment areas, however, the nozzle head according to the figure of Figure 6 is arranged so that it is tilted downwards by 30 ° relative to the horizontal.

In the diagram of the amounts of air for 66n blowing nozzle shown in Fig. 9, the dependence of the amount of air emitted per unit of time on the air velocity is plotted at the location of the blowing nozzle. A further parameter is the number of blowing nozzles and it appears that the amount of air emitted increases with the number of outer nozzles. The bottom line 100 8105412 • t * - 12 - refers to the case where air flows exclusively from the guide blowing nozzle 25, while lines 102, 104, 106 and 108 indicate those cases, that 2, 4, 6 or 8 outside mouths 9 26 let extra air out.

While in the embodiments considered hitherto, the pressure chamber 13 was single-stage, FIG. 10 shows as a further exemplary embodiment of the device according to the invention a four-stage pressure chamber. This feature serves the purpose of the periphery of the pressure chamber having four rows of nozzle heads arranged one above the other. Optionally, substantially annular partitions 46-48 are provided in the interior of the pressure chamber, forming outflow spaces 42-45 associated with the rows of blowing nozzle heads. It has been found, as shown in Fig. 10, that the substantially annular partitions as well as the upper and lower boundaries of the pressure chamber 13 may be lined with sound-damping material and this is shown in the left part of the figure. Sound-damping material 50 is located on the bottom of the pressure chamber 13.

In Figs. 11-13 again a single-stage pressure chamber, 20 partially in section, is shown. It has been found that in all three cases, for reasons of flow technology, the sound-damping material 50 forms a substantially conical central elevation. Moreover, in Fig. 12, it is ensured that the outflow cross-section is narrowed by increasing the sound-absorbing material 51, 25 below. Filling material may be provided at positions 52 and 54. Fig. 13 shows that due to a special arrangement of the sound-damping material 53 the outflow cross-section is continuously narrowing.

The filler material 55 is deformed in a special way for this purpose.

In accordance with the stated object, the invention advantageously permits the adaptation of an injector-type room air conditioner to practically all objectives to permit, in a simple and economical manner, that the room air conditioner be provided persons involved can be optimally kept.

8105412 ______

Claims (19)

1. Injector-type room air conditioner, in particular for blowing large quantities of air in halls or similar large spaces with at least 44n directionally adjustable blowing nozzle, characterized by a pressure chamber (13) for receiving compressed air. blow air with one or more blow nozzle heads (14) arranged on its outer surface and having blown nozzles (25, 26) in the side facing the general outflow direction, which are substantially perpendicular to the general outflow direction. 10, the straight face (27) disposed thereon is arranged such that the outflow direction of each blowing nozzle (25, 26) is individually adjustable in a predetermined angle region. 2. Injector-type room air conditioner according to claim 1, characterized in that the blowing nozzle or airflow nozzle respectively. the blower nozzles (25, 26) have at least two circular arc and / or elliptical grooves (31 - 36) or other recesses lying in a circle or elliptical shape on the outer circumference, in which the end face (27) or parts or attachments of the end face ( 27) can intervene and that the blowing nozzle resp. the nozzle 20 pieces (25, 26) and / or the end face (27) resp. the parts or attachments of the end face (27) are elastically deformable. Injector-type room air conditioner according to claim 1, characterized by the nozzle or resp. the blowing nozzles (25, 26) provided, which can engage in recesses arranged on the end face (27) such that the direction of the blowing nozzle or. of the blowing nozzles (25, 26) can be changed against the force of elastic deformation. 8Ί 0 5 4 1 2 «*« f * ► - 14 - Injector-type room air conditioner according to claim 2 or 3, characterized in that the blowing nozzle or air nozzle is respectively. the blowing nozzles (25, 26) and / or the end face (27) consist of elastic or plastically deformable material. Injector-type room air conditioner according to claim 1, characterized in that the direction of the blowing nozzle or. of the blowing nozzles (25, 26) relative to the end face (27) by plastic deformation of a 10 between the blowing nozzle and blowing nozzles (25, 26) and the connecting means applied on the head face (27) are changeable. 6. Injector-type room air conditioner according to Claims 1 to 5, characterized in that the blowing nozzle or nozzle. the blowing nozzles (25, 26) are adjustable in all directions with respect to the general direction of outflow to change their direction. 7. Injector-type room air conditioner according to any one of claims 1 to 6, characterized in that the blowing nozzle resp. the blowing nozzles (25, 26) 20 are adjustable in all directions in the directions of 0 °, 5 °, 10 °, 15 ° or more with respect to the general outflow direction. Injector-type room air conditioner according to claim 6, characterized in that the steps are 0 °, 3 °, 6 °, 9 ° or more, or 0 °, 4 °, 8 °, 12 °, 16 ° or more, or 25 0 °, 6 °, 12 °, 18 °, 24 ° or more. Injector-type room air conditioner according to Claims 1 to 8, characterized in that in the end face (27) at least one guide nozzle 8105412 r * f> *% - 15 piece (25) is arranged. , which can allow a significantly higher air passage compared to another nozzle (26). Injector-type room air conditioner according to claims 1 to 9, characterized in that the guide blowing nozzle (25) receives at least 30% of the total flow rate of the air, while the remaining flow rate of air is distributed over other nozzles (26) so that each absorbs less than $ 30 of the flow rate. Injector-type room air conditioner according to claims 1 to 10, characterized in that the end face (27) is substantially circular and the guide blowing nozzle (25) is in or near the center of the end face (27) is fitted. Injector-type room air conditioner according to Claims 1 to 11, characterized in that in the front face (27) there are openings in which exchangeable blowing nozzles (25, 26) or blinded nozzles (23) are provided. can be deployed. 13. Injector-type room air conditioner according to any one of claims 9-12, characterized in that the arid blower nozzles and resp. the outer nozzles (26) resp. the openings surround the guide blowing nozzle (25) in a substantially circular manner. Injector-type room air conditioner according to any one of claims 9 to 13, characterized in that the direction of the guide blowing nozzle (25) is independent of the direction of the other blowing nozzles (26) 8105412 • 0 <- 16 - * f * is different. 15. Injector-type room air conditioner according to 66n of claims 9-14, characterized in that the direction of the guide blowing nozzle (25) is steplessly changeable. 16. Injector-type room air conditioner according to claim 14 or 15, characterized in that the guide blowing nozzle (25) has a spherical extension or a spherical outer surface (40), which is arranged in a guide (41), that the direction of the guide blowing nozzle (25) is infinitely variable. 1 Injector-type room air conditioner according to 66n of claims 9-16, characterized in that one or more of the other blowing nozzles (26) has / have a spherical extension or a spherical outer surface, such that in a guidance is provided that the direction / directions can be infinitely changed. Injector-type room air conditioner according to any one of claims 1 to 17, characterized in that the circumferential pressure chamber (13) has more rows of nozzle heads, respectively, arranged one above the other. blowout nozzle openings and having internally substantially annular partitions (46-48) separating the inflow spaces (42-25-45) associated with the rows of blow nozzle heads. 19. Injector-type room air conditioner according to any one of claims 1 - 18, characterized in that the substantially annular partitions (46 - 48) are covered with sound-damping material. % 8105412