DE3018012A1 - Ventilating system air distributor - has air forced by fan into tube with side outlets with adjustable nozzles at ends - Google Patents

Abstract

The ventilating system for a position where conditions can vary due to heat or dust from adjacent machines, sunshine etc. uses an air distributor with a housing (1) mounted on an air supply duct (3). At the bottom is an inlet grid (7) for entry of air towards a suction fan (5) which discharges into a tube (12). This has side outlet channels (13) with an adjustable discharge jet (14) at the end of each. These can swivel in the walls of the housing. Above and below each jet can be included further air outlets (15). The speed of the fan can be adjusted to control the discharge from the jets. The fan can be enclosed by a sound insulating housing. Alternative designs include motor operated tilting guide flaps at each discharge channel.

Description

Applicant; Stuttgart, April 17, 1980

Wieler P 3848 X / Lö

Klima-Lufttechnik GmbH

industrial area

7067 Urbach '■ ■

Representative:

Charcoal burner. - Schwindling - Late
Patent attorneys
Hohentwielstrasse 41

7000 Stuttgart 1

Device for room ventilation

The invention relates to a device for ■ room ventilation with tempered or humidified or dehumidified air, with a source of compressed air connected to at least one Blow-out nozzle connected for a propulsion jet, as well with outlets for supply air adjacent to the exhaust nozzle.

13004 6/048

Such devices have long been known. They generally comprise a rigid duct system on the one hand for the compressed air to generate a propulsion jet and on the other hand for the supply air, which can be room air and / or outside air drawn off at another point. However, the known devices are relatively expensive and have the main disadvantage that they can only be adapted to rapidly changing requirements or changes with great effort. Such changes result from seasonal and daily temperature fluctuations (solar radiation), the heat developed by machines, the occupation of workplaces as well as the development of gases and dusts _o All these frequently or occasionally changing factors influence the air currents in the room and, if necessary, require favorable climatic values can to be maintained in the room, brief interventions "even changes to the production facilities (installation of new machinery) changes in indoor air management require" disadvantage is known in the <~~ rigid systems also that they often

have to be designed for a high load case, which, however, only occurs for a short time. During the the rest of the time, the system is oversized and consumes more energy than is actually necessary »

The object of the present invention is to create a device for room ventilation that is very allows variable air flow and in which the area of action is great.

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This object is achieved according to the invention in a device of the type mentioned at the outset in that As a unit ready for installation and connection, it consists of a housing with blow-off nozzles arranged on its side surfaces, which are connected via distribution lines the pressure air source are connected, and that the inflow opening for the supply air is provided on the top or bottom of the housing.

By using the device according to the invention the air-conditioning systems can be reduced in size, which saves costs both in the creation as well as during the operation of the system. An advantage is furthermore that there are always upgrade options by connecting a device according to the invention to an existing supply air duct system. It is also advantageous that a larger room gradually with devices according to the invention can be provided in order to adapt to later increasing requirements. By the provision of individual devices with variable supply air and propulsion jet strengths and directions can be adapt the air flow at any time to changed machine setups and changes to workplaces * For example, by appropriate arrangement a device according to the invention also support the air buoyancy over highly loaded and therefore a lot of heat emitting machines by targeted flow, The main reason for this is that the machine heat is hardly noticeable in the area where the employees are staying. This is very desirable especially in summer. Also, for example, at certain workplaces; arising Dusts and mists through appropriate arrangement according to the invention Devices are "guided" to their suction openings. This means that the detection area

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can be expanded by extraction systems. Finally, local and temporal variable amounts of incoming air can be set according to the air pollution of the room to be air-conditioned or according to the wishes of those located in it. Finally, a very important advantage of the device according to the invention is that it is possible to heat, cool or humidify individual areas of a room, for example individual workplaces, independently of the other Γ "room areas

without creating an overall system with such individual requirements needs to be charged.

The device according to the invention also makes it possible to match those in the room to those in the "ceiling area" Air-bound heat, for example from machines, for heating in the living area of those in the room People to use, in which the device is arranged as a circulating air device in the ceiling area, with the Circulating air is supplied directly or via corresponding short channels to the inflow opening for the supply air.

The source of compressed air can be a fan common to several devices, from the lines to the lead individual housings, regulating elements being provided in the lines to adjust the strength of the propulsion jet. Such an arrangement is recommended when several devices are in close proximity are arranged from each other. Preferably, however, the compressed air source is built into the lower part of the housing Fan, the suction side of which is connected to suction openings provided in the lower area of the housing and the pressure side of which is connected to the distribution lines via a pressure channel. Can be preferred

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a silenced suction box must be connected upstream of the suction side. The suction box is preferably arranged to surround the fan and is flanged to the underside of the housing. Hereby gives a com- ^· pact unit from the little noise from leaking

and which enables an easily adjustable and highly effective air supply. .-

v_-. The blow-off nozzles are designed in such a way that direction and

Strength of the propulsion jet are adjustable. In a preferred embodiment of the invention, the blow-out nozzles for the propulsion jet are designed as spherical nozzles which can be adjusted in their blow-out direction. A cone area with a cone angle of about 90 ° can thus be achieved, which is fully sufficient in most applications. - ■■ -.-- ■

In other embodiments of the invention, the blow-out nozzles are arranged rigidly and an adjustment flap is provided in their blow-out jet. The adjustment flap can be turned around. an axis directed transversely to the beam ver ^v ~ ". be mounted pivotably or it is the.verstellkläppe

according to another preferred embodiment a for Beam at an acute angle occupying plate, which can be moved transversely to the beam, whereby the through the Verstellkläppe achieved deflection of the beam adjustable

■ is. ' .. · ■. "-; - ■■ ■ ^: ■" ■■■ -. _ ■ - ■■. ". ■ '■ - .;." ■

While, in general, the ball nozzles or adjustment flaps are individually adjustable, according to one preferred Embodiment for other applications

■ the ball nozzles or the adjustment flaps of a housing

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adjustable by a common drive and among each other Mechanically connected by rods and joints. It can be the effort for the adjustment to adapt to requirements that fluctuate over time.

Each blow-out nozzle through which a propulsion jet is passed a supply air outlet can be assigned. However, at least two or more of the outlet nozzles are preferred more supply air outlets assigned spatially adjacent. In particular, it is useful if the supply air outlets the Blow-out nozzle are provided surrounding.

Should a device according to the invention not only Air distribution but in particular also the additional air heating and / or air cooling or full air conditioning serve, then according to preferred embodiments in the air supply line that is connected to the inflow opening connected, a fan and / or corresponding heat exchangers and humidifying devices installed. Through this it is possible to heat and / or cool the supply air or to humidify and dehumidify it in a targeted manner certain areas of a room, for example a Hall to be able to treat air conditioning in an energy-saving manner, without affecting the other areas of the room or hall where this is not necessary will. In this way, very favorable, energy-saving air conditioning can be achieved.

In preferred embodiments of the invention, in A mixing chamber is provided in the supply air line, which is connected to an outside air connection or via adjustable flaps. can be connected to an indoor air connection. This allows the mixing ratio to be determined in a manner known per se regulate between outside air and inside air.

130046/0487 · / ■

In a preferred embodiment of the invention the housing part of a supply air duct, on the underside of which the housing with fan and exhaust nozzles is flanged. This embodiment is special then advantageous, because inexpensive, if a supply air duct system is provided anyway.

However, the device according to the invention is not suitable only for work rooms in industrial companies, but it is also suitable for use in department stores, offices, Counter halls and similar rooms with greater demand for comfort. To this end, according to a preferred one Embodiment the device combined with a lamp and in particular with this in one, built-in housing ... "As a result, one cannot be seen from the outside Realize appearing accommodation, because the appearance of the ver ^ the space seen is not impaired.

Further details and refinements of the present invention emerge from the following description of the exemplary embodiments shown in the drawing in connection with the claims. They show a simplified and schematic representation under Omission of details not necessary for understanding the invention:

Pig. 1 shows a longitudinal section through a device blow-out nozzles designed as spherical nozzles,

Pig. 2 is a section through _a: upstream device having the · .Ausblasdüsen ^{Verstellklappen;}

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Fig. 3 is a section through a device with a other embodiment of the adjustment flaps as well as with an additional upstream device for air temperature control, and

4 shows a section through a device which can be attached directly to a supply air duct.

Γ- The embodiments shown in the drawing

can have a square, rectangular or otherwise polygonal or circular outline. the Section plane in all drawings is perpendicular to this floor plan.

The device shown in Fig. 1 comprises a multi-part Housing 1, the top of which is open and by means of a flange 2 is attached to a supply air duct 3. In a lower housing section 4, a blower 5 is installed as a compressed air source, which acts as a radial blower is formed, the central suction opening via a pipe socket 6 with a covered by a grid 7 Opening in a bottom 8 of the housing section 4 is connected. By means of a cut-out Flange 9 is the fan 5 with a bottom a housing section 11 provided above the housing section 4 in its extension is attached. The bottom 10 is provided with a corresponding recess for the air flow conveyed by the fan 5 to pass through provided, which is passed through a pressure channel 12 to distribution lines 13, which in turn lead to in Blow-out nozzles in the form of spherical nozzles 14 attached to openings in the side walls of the housing section 11 to lead. In the immediate vicinity of the ball nozzles

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are in the side walls of the housing section 11, in the supply air flows in from duct 5, with grilles 15 provided outlets 16 are provided.

The air conveyed by the fan 5 collects inside of the housing section 4- and flows through the openings of the flange 9, the pressure channel 12 and the supply. divider lines 13 to the ball nozzles 14. Here flows

a powerful, relatively narrow, bundled propulsion jet, the direction of which by adjusting the ball nozzle 14- a. is adjustable. This propulsion jet takes a

times the amount of propellant air comprising electricity. Supply air with and directs it. The speed of the fan is adjustable and thus the effect of the propulsion jet is variable.

In the embodiment shown in Fig. 2 is the Housing section 4 of one with a sound insulation 1? provided suction box 18, which is used to open the Pipe socket 6 leading. Channels 19 includes. The ones from Compressed air generated by the blower 5 arrives again via the recessed flange 9 and the pressure channel 12 to the distribution lines 13, at the ends of which v- ■ outlet nozzles 20 with a rectangular cross section are attached

are. An upper housing section 21, which encloses the pressure channel 12 and the distribution lines 13, is provided on its side walls with large outlets 22, which are designed as "pipe sockets with a square cross-section projecting outward over the cross-section of the housing section 21. The outlet nozzles 20 are located approximately in the middle of the cross-section of the outlets 22. Inside the outlets 22 are also, in each case in front of the openings of the outlet nozzles 20, arranged adjusting flaps 23 which can be pivoted about an axis 24- . "." - ■.

1.300.46 / 0487

In addition, there are inflow rudders 25 around the axes 24.1 pivotable, which together with the adjustment flaps 25, however, can be pivoted via a separate adjustment linkage 26 are, which can also be adjusted by a servomotor 27 is. The adjusting rods of all adjusting flaps of all outlets are preferably in Coupled with one another in a manner not shown in order to be able to manage with a single servomotor. However, if the individual outlets are to be adjusted differently, this coupling and es are not required A separate servomotor is provided for each adjustment flap with an inflow rudder, unless a manual, lockable adjustment is provided.

The supply air flows again from the supply air duct 35 into the housing section 21 and is entrained by the jet emerging from the outlet nozzles 20, wherein the direction of the total air flow from supply air and Propulsion jet consisting of the adjustment flaps 23 is adjustable.

In Pig. The embodiment shown in FIG. 3 eliminates the splash 9, the pressure channel 12 and the distribution lines 13 »because outlet nozzles 28 with rectangular or a round cross-section directly adjacent to the wall of the housing section 4 the bottom 10 of an upper housing section 29 are arranged, on the upper side of which the supply air duct 3 and / or a corresponding device part connects. The housing section 29 is cylindrical, just like the housing section V. The outlet nozzles 28 are distributed in a star shape on the circumference and their outflow direction is directed radially. In the cylinder surface of the housing section 29 is an annular one Outlet opening 30 is provided, which is covered by a wire mesh screen 31

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is. For beam steering; serves an adjustment flap 32, which Is designed in the shape of a plate, the rim of the plate being chamfered conically downwards in the direction of the outlet nozzles 28 is. By a front within the housing section 29 •. As seen servomotor 53, the adjusting flap 32 move up and down, making her after The beveled edge at the bottom protrudes more or less into the propulsion jet of the outlet nozzles 28 and this and thus also directs the entrained supply air flow. In order to obtain favorable flow conditions, the upper edge of the Outlet opening 30 then an outlet funnel 34 widening downward in cross-section inserted into the housing section 29.

If certain areas are not to be supplied with air, it is sufficient to refer to the embodiment Fig. 3 to provide a jacket portion, the corresponding area of the outlet opening 30 as well the corresponding outlet nozzles 28 covers.

An air filter is also located within the supply air duct 3 35 is provided, which is followed by a heat exchanger 36. In the direction of flow follows the Heat exchanger 36 and a fan 37 designed as an axial fan, which flows through the duct system, the air filter 35 and the heat exchanger 36 effected Compensated for flow resistance. In the direction of flow A mixing chamber 38 is provided in front of the air filter 35 and leads into the space to be ventilated Inlet 39 and one to the outside or to one Has outside air duct leading inlet 4-0 .. Both Inlets 39 and 4-0 have adjustable flaps known per se 41 provided to the .Air volume or the Amount of outside air and their relationship to each other ^ e according to the

130046/0487

to adjust current needs.

A particularly simple and inexpensive embodiment is shown in FIG. Here the device is simply connected to an existing air intake duct 3 ', which has air intake grilles 4-2 on the side or in the floor area. The device comprises only a housing section 4- "with a fan 5 housed therein and ball nozzles 4-3 provided in the side walls the end. The propellant jet takes the supply air emerging from supply air ^{grilles 4-2 in supply air duct 3 1 with it.} This arrangement is particularly suitable as a separate installation in ceilings or floor areas for heating purposes and to delimit air spaces.

It goes without saying that the invention is not limited to the exemplary embodiments shown, but rather Deviations from this are possible without departing from the scope of the invention. In particular, individual the features of the invention can be used individually or in combination.

It is advantageous for all designs that the Exit impulse of the propellant air jet on its own as well as together with the supply air flow can be adjusted according to direction and size. With that you can Set the penetration depth and position of the penetration area of the motive and supply air. The propulsion jet determined by the entrainment of the supply and room air is decisive for the flow course due to a high level of induction and

130 046/0487

a small Archimedes number as a ratio of Aufoder Downforce, to momentum.

The amount of propellant air can, as far as a regulation for all Blow-out nozzles of a device are to be made jointly, also by means of a speed control of the fan 5 take place. The supply air quantities can be adjust over a wide range by means of throttling devices without significantly changing the = optimal flow pattern and without affecting the penetration area. Through this the energy requirement and the investment requirement can be reduced because the overall system is reduced in size can, because due to the local controllability and the Experience that the maximum performance is never required everywhere at the same time, a downsizing of the system is possible. Through the use of individual devices, it is possible to change the location and time Set the supply air volume according to the respective air pollution in the room to be ventilated.

It is also advantageous that the fan can be designed so that it is at medium power, which during the most of the operating times is required, has a particularly favorable efficiency. Will then during a certain, relatively short time an increased amount of air required, this is achieved by increasing the speed with, however, reduced efficiency, with the Reduced efficiency due to the short time this operating condition is maintained will only have an insignificant effect on the energy balance, whereas this has a favorable effect due to the long operating time -Efficiency. Is favorably influenced.

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Claims (1)

Claims (1 οJ device for room ventilation with tempered and humidified or dehumidified air, with a compressed air source that is connected to at least one blow-out nozzle for a propulsion jet, as well as outlets for supply air adjacent to the blow-out nozzle, characterized in that it is ready to be installed and connected Unit consists of a housing (4.11; 4.21; V, 29) with blow-off nozzles (14 or 20 or 28 or 43) arranged on its side surfaces, which are supplied via distribution lines (13 or 4 ¹ or 4 " ) are connected to the compressed air source (5), and that the inflow opening for the supply air is provided on the top or bottom of the housing. 2. Device according to claim 1, characterized in that that the compressed air source is a for. multiple devices common fan is, from which lines lead to the individual housings. Device according to claim 1, characterized in that the compressed air source is in the lower part of the housing built-in fan (5), the suction side of which is provided in the lower area of the housing Suction openings is connected and its pressure side via a pressure channel (12) with the distribution lines (13) is connected «, 130046/0 ^ 8? 4. Apparatus according to claim 3 »characterized in that .that the suction side is a soundproof suction box (18) is connected upstream. 5. Device according to claim 4, characterized in that that the suction box (18) surrounding the fan (5) is arranged and flanged to the underside of the housing. 6. Device according to one of the preceding claims, characterized in that the blow-out nozzles for the Propulsion jet as adjustable in its discharge direction Ball nozzles or nozzles (14 or 43) are formed. - Additive? Nozzles on flexible pipe (Photo). 7. Device according to one of claims 1 to 5t thereby characterized in that the outlet nozzles (20 and 28) are rigid are arranged and an adjustable flap in its exhaust jet (23 or 32) is provided. 8. Apparatus according to claim 7 »characterized in that that the adjustment flap (23) by a transverse to the beam aligned axis (24) is pivotably mounted. 9. Apparatus according to claim 7, characterized in that that the Verstöllklappe (32) one to the beam one includes acute angle occupying plate, the transverse displaceable to the beam and thereby a deflection of the beam can be set. 130046/0487 10. Device according to one of claims 6 to 9 »characterized in that the blow-out nozzles or the Adjusting flaps of a housing can be adjusted by a common drive (27 or 33) and one below the other are mechanically connected by rods. 11. Device according to one of the preceding claims, characterized in that the blow-off nozzles in each case at least two supply air outlets (16) are assigned. 12. Device according to one of the preceding claims, characterized in that in the air supply line (3), which connects to the inflow opening, a fan (37) and / or heat exchanger (36), filter, Humidifiers and the like are installed. 13. The device according to claim 12, characterized in that a mixing chamber (38) in the supply air line (3) is provided, which via adjustable flaps (41) with an outside air connection (40) or a room air connection (39) is connectable. 14. Device according to one of the preceding claims, characterized in that the housing is part of a supply air duct (3 ¹ ), on the underside of which the housing with fan (5) and exhaust nozzles (43) is flanged. 15 «device according to one of the preceding claims, characterized in that it is combined with a lamp and in particular with this in one Housing is built in = 130046 / 0A87