DE102017005246A1 - Supply air element with humid air-controlled regulation of the room air - Google Patents

Abstract

Supply air element (1) with moist air controlled regulation of the room air (49) in a room (50), wherein in dependence on the humidity of the room air (49) a regulated amount of fresh air (15, 51) of the room air (49) is immiscible, and the Control unit (34, 38, 40) for the admixture of fresh air (15, 51) consists of an adjustable in flow cross-section, directed into the space discharge unit (18, 28, 26), which is driven by a moisture-sensitive sensor, wherein the sensor Control unit (34, 38, 40) of a forced air flow of the room air (49) is flowed.

Description

The invention relates to a supply air element with humid air controlled regulation of the room air in a room, depending on the humidity of the room air, a regulated amount of fresh air of the room air is immiscible, according to the preamble of claim 1. Such a supply air element, for example, with the subject of FR 2 544 471 A1 , of the DE69409311T2 , of the DE2040382C2 or the WO20040063635A1 known. In the FR 2 544 471 A1 For example, a moisture-length changing drive belt is clamped between two different chuck points, and the moisture-related change in length of the drive belt is used for a damper drive to control an outlet cross-section for the air flow to be regulated.

The control of the outlet cross section via a displaceably driven spring, which is held by a return spring in a certain position.

As soon as the moisture-sensitive strip is subjected to a moist air flow, this change in length changes the displacement position of the air slide closing an air outlet.

Disadvantage of the known arrangement is that a complicated structure with a bellows, a return spring and a Bowden cable is present. In this case, only a relatively small outlet cross section is to be regulated with such an arrangement.

The flow of the moisture-sensitive drive belt with room air is unsafe for operation, because it is not intended that a forced flow of room air takes place via this band.

For this reason, it may happen that moisture builds up in the housing in which the drive belt is arranged, because there is no convection flow through the drive belt. In an undesirable moisture precipitation, the drive belt remains in its one position, because there is no way to remove moisture adhering there.

So there is no need for the forced flow through the housing for the drive belt, and thus there is the disadvantage that a very sluggish regulation is given because an air exchange in the housing of the drive belt is not provided.

The invention is therefore based on the object, a supply air element with respect to the room humidity-controlled regulation so that a more reliable regulation of supply air is guaranteed depending on the degree of humidity of the room air with the exclusion of a dysregulation.

To solve the problem, the invention is characterized by the technical teaching of claim 1.

A feature of the invention is that at least two air-tight separate chambers are arranged in the supply air element, wherein the moisture-sensitive drive element designed as a sensor is arranged in a roomluftbehgewandten chamber for the regulation of the air outlet of the supply air and flows of room air, while in the other chamber the outflow opening of the supply air element is arranged in the space to be flowed and that a forced flow of the moisture-sensitive drive belt takes place with room air.

This is achieved by arranging at least one outlet slot directed into the space to be flowed in the discharge air conducting outflow chamber, which communicates via a venturi nozzle effect with an after-suction outlet connected in an air-tight manner, which sucks the moisture-laden room air out of the room and can flow over the trained as a drive belt sensor.

It is envisaged that in the outflow chamber at least one outlet slot is arranged, which is designed as a flow outlet and which is able to suck via a Venturi nozzle effect, the air from the air-tightly separate Nachsaugkammer, so that the moisture-laden room air nachzusaugen in the Nachsaugkammer and thus to flow the drive belt with room air ..

For a forced flow through the air inlet element is guaranteed with room air, because the fresh air flowing out of the outflow chamber in the same time sucks the possibly humidified room air with a Venturi nozzle effect, which thus forciert the drive element sweeps and thus a fast and effective humid air-controlled regulation ensures the discharge air.

There is the advantage that at an undesirably high indoor air humidity, the z. B. is triggered by the presence of a plurality of people in a room, now forcibly humidified room air is sucked by the Nachsaugeffekt invention in the interior of the Zuluftelementes while the drive element for the humid air controlled Regulation spread and freed of moisture residues. The sucked into the Nachsaugkammer room air acts as purge air for the flow of the drive belt.

For a forced flow through the supply air element is ensured with room air, and it is prevented that moisture precipitates in the housing of the supply air on the room air side and makes the drive element inoperative.

The regulation of the fresh air supply is thus responsive, because through the forced intake of moisture contained indoor air, which sweeps the humid air-sensitive drive element as purge air, a reliable and rapid regulation of the fresh air led into the room is achieved depending on the moisture content of the room air.

The invention is not restricted to the fact that the outlet cross-section of the supply air element directed into the space is formed by a fan disk controllable in the passage, the angle of rotation of which can be changed by the moisture-controlled drive.

In another embodiment, it may be provided that instead of a controllable in the passage cross-section fan disc in the individual, evenly distributed on the circumference fan sectors are rotatably mounted on an axis, which if necessary cover according to their rotation angle sector-shaped outlet cross-sections, also louvered Ausströmanordnungen can be used.

In such jalousine-like outflow openings, a number of mutually parallel, pivoting jalousie flaps are present whose pivot angle is regulated by the moisture-sensitive drive mechanism. Accordingly fall next to a round shaped fan disc as a discharge and louvered outflow openings in the scope of the present invention.

For such outlet cross sections still other embodiments are possible, all of which have in common that a relatively large adjusting movement of the adjusting elements is achieved over a small displacement. These are z. B. also iris-like outflow openings or flap-controlled outflow openings.

In a preferred embodiment of the invention, however, a fan disk is formed by the discharge opening, the angle of rotation is variable by the moisture-controlled drive. For moisture control, a multi-ply fabric tape having hygroscopic properties is preferred.

The hygroscopic property refers to a change in the length of the strip with the application of moisture.

Such a band may, for example, have a length of 20 cm, a width of 10 mm and a thickness of two-tenths of mm, and it is multi-layered.

The subject of the present invention results not only from the subject matter of the individual claims, but also from the combination of the individual claims with each other.

All information and features disclosed in the documents, including the abstract, in particular the spatial design shown in the drawings, are claimed to be essential to the invention insofar as they are novel individually or in combination with respect to the prior art.

In the following the invention will be explained in more detail with reference to drawings showing only one embodiment. Here are from the drawings and their description further features essential to the invention and advantages of the invention.

• 1: perspektivische Darstellung eines Zuluftelementes mit einem davor vorgesetzten Wanddurchführungsrohr
• 2: die Anordnung nach 1 im Schnitt
• 3: die Draufsicht auf die Deckenseite des Zuluftelementes von der Raumseite her
• 4: die gleiche Darstellung wie in 3
• 5: ein Schnitt durch das Zuluftelement in Höhe der mittleren Kammer mit Darstellung der Kammerwand und der dort angeordneten luftführenden Teile
• 6: ein weiterer Schnitt gemäß der 5 mit Darstellung des Antriebsmechanismus
• 7: perspektivische Darstellung der inneren Kammerwand des Zuluftelementes mit Darstellung der Strömungsverhältnisse
• 8: eine gegenüber 7 abgewandelte Darstellung
• 9: die schematisierte Darstellung des Prinzips der Erfindung
• 10: schematisiert die Darstellung einer Venturidüse mit Darstellung der Funktionen der Erfindung
• 11: eine weitere Ausführung einer Venturidüse
• 12: die Stirnansicht der 11

Show it:

• 1 : Perspective view of a supply air element with a wall bushing tube in front of it
• 2 : the arrangement after 1 on average
• 3 : the top view of the ceiling side of the supply air element from the room side
• 4 : the same representation as in 3
• 5 a section through the supply air element at the level of the middle chamber with representation of the chamber wall and the air-conducting parts arranged there
• 6 : another cut according to the 5 with representation of the drive mechanism
• 7 : perspective view of the inner chamber wall of the supply air element with representation of the flow conditions
• 8th : one opposite 7 modified representation
• 9 : the schematic representation of the principle of the invention
• 10 : Schematically illustrates the representation of a Venturi nozzle showing the functions of the invention
• 11 : another version of a Venturi nozzle
• 12 : the front view of the 11

In 1 is a box-shaped air inlet element 1 shown, the one room-side front cover 2 , as well as a back wall cover 3 having. With the wall cover lies the supply air element 1 to a room wall, not shown.

The supply air is supplied through a wall duct 13 , which passes through a wall, not shown, and the front side with a connection cover 14 is completed, through its intake 19 the outside air 15 in the direction of the arrow 16 is sucked.

This sucked fresh air is through several sound-absorbing baffles - as based on the 2 will be explained - at the outlet end of the wall duct 13 in the direction of the arrow 17 on the inlet side of the supply air element 1 guided.

The sleeve-shaped annular cross section of the wall duct 13 engages a connection collar on the supply air element 1 , so that the wall bushing 13 air-tight via the connection collar 47 with the supply air element 1 connected is.

In 1 also the outlet openings of the supply air element are shown.

The outside air 15 is in a manner not shown by the supply air 1 sucked through.

It is not shown that in the room still an exhaust fan is present, the fresh air through the wall duct 13 in the supply air element 1 sucks.

However, it may be provided in another embodiment that either in the wall duct 13 or in the supply air element 1 even a fan is built in by a battery 12 can be powered.

In the illustrated embodiment, it is assumed that the room air through a not-shown Nachsaugelement such. B. a fan, by the supply air element 1 is sucked through.

The outflow of outside air 15 into the room via several outlet openings in the supply air element 1 , It is preferred that all outlet openings produce a flow of air running parallel to the wall plane. They are therefore not directed directly into the room. This achieves a laminar flow along the wall surface.

In a preferred embodiment, an upper outlet slot 4 present over which most of the outside air 15 in the direction of the arrow 7 enters the room.

According to the invention are laterally on the box-shaped Zuluftelement 1 two opposite flow outlets 5 present, which may be formed either as a slot or as a bore. About these flow outlets 5 In addition, a smaller proportion of outside air flows 15 in forced flow as airflow 8th in the room.

According to the invention it is provided that in direct air-tight connection to the fresh air-leading flow outlet 5 now a room air-leading Nachsaugauslass 6 in the housing of the supply air element 1 is arranged. The fresh air leading, forced airflow 8th from the flow outlet 5 provides a suction effect of a room air-leading secondary suction flow 9 coming out of the suction outlet 6 in the housing of the supply air element 1 flows into the room.

It is important that the Nachsaugstrom 9 Part of the room air is in the direction of the arrow 11 through a bottom-side inlet slot 10 in a room air-carrying chamber of the supply air element 1 is sucked in.

In this way, by the forced air outflow of fresh air from the flow outlet 5 of the airflow 8th a suction effect on the Nachsaugauslass 6 adjacent room air, thus in the direction of arrow 11 through a bottom inlet slot 10 is sucked. This vacuuming effect becomes the flow of the drive belt 38 used with indoor air.

The 2 shows that the wall bushing 13 a cover 14 having a lower, frontal and radial suction port 19 and thus the air flow entering there via a first deflection path 20 via a first soundproofing element 21 deflected and by a, aligned in the axial direction filter unit 48 passes through. After passing through the filter unit 48 the air flow is in the direction of the arrow 17 via a second soundproofing element 22 and then finally as a central air flow through a sleeve-shaped distribution chamber 23 on the inside of the supply air element 1 guided.

The 3 shows the top view of the room-side front cover of the supply air 1 , In the drawing, a section is shown, are shown with the parts of the rotary drive for the moist air controlled regulation.

The 4 shows - in comparison to 3 - the room air side front cover 2 of the supply air element 1 , where at the lower edge the free end of a Regulierhebels 26 It can be seen that in a manual operation directed into the room outlet cross section of the supply air element 1 regulate.

The supply air element 1 is essentially formed of three mutually parallel and interconnected shell parts. It consists of the room air side front cover 2 , from the wall cover adjacent to the wall surface of the room 3 and from a middle chamber wall 25 in top view 5 is shown.

The chamber wall 5 becomes air-tight through a partition 36 divided so that form two air-tightly partitioned chambers, namely a lower Nachsaugkammer 37 , which has flowed from the incoming room air and from an upper outflow chamber 35 over which the outside air sucked in from outside 15 by a variable in the outlet cross-section disc 18 is discharged.

The fan disc 18 consists essentially of a plurality of sector-shaped, uniformly distributed on the circumference arranged interconnected fan elements 28 in the area of a rotation axis 43 rotatably connected to each other. They cover partially or completely also sector-shaped, in the shape of the rotatably driven fan elements 28 adapted housing-fixed outlet openings 27 ,

With a rotation of the fan disc 18 become the fan elements 28 in the direction of the arrow 29 adjusted. Thus, the outlet cross-section of the housing-fixed, sector-shaped outlet opening 27 set.

The outside air flow 15 flows now perpendicular to the plane of the 5 on the fan disc 18 and flows through this fan disc. This air flow thus flows from the plane of the drawing 5 Starting forward, so that you can see the outlet sides of the fan disc 18 sees.

Accordingly, the outside air flow flows in the direction of arrows 8th in the outflow chamber 35 and becomes in the direction of the arrow 7 redirected where he has the outlet side slot 4 leaves and enters the room parallel to the wall level.

From the in the direction of the arrow 7 flowing main air flow is a secondary air flow in the direction of arrow 8th branched out of the lateral, opposite flow outlets 5 forced in the direction of the arrow 8th exit into the room.

In direct air-tight connection with the fresh air-leading flow outlets 5 are underneath, in the area of the suction chamber 37 , side suction outlets 6 arranged, leading to the fresh air-leading flow outlets 5 are directly adjacent. The one from the flow outlets 5 exiting fresh air-carrying airflow 8th therefore forms a Nachsaugstrom 9 who's in the suction chamber 37 located room air from the Nachsaugauslässen 6 pulls out and thus the room air, in the direction of arrow 11 through the lower inlet slot 10 in the Nachsaugkammer 37 has occurred, now as Nachsaugstrom 9 from the Nachsaugauslässen 6 fed out.

Thus, a constant room air controlled flow through the Nachsaugkammer 37 by sucking moisture-laden room air in the Nachsaugkammer 37 reached. The sucked in room air flows through a drive element for the rotary drive of the fan disc 18 ,

The drive element consists of the hand-operated regulating lever 26 in a housing-fixed pivot bearing 30 is pivotally received and during its pivoting the rotational position of the individual subjects elements 28 in relation to the housing-fixed outlet openings 27 is changeable.

In addition, there is a moisture-sensitive drive mechanism for the fan disc 18 present, which in the embodiment shown from a hygroscopic drive belt 38 exists, which undergoes a change in length due to a moisture influence.

The drive belt 38 is as a multi-layer thin woven tape between two clamping points 39 clamped under spring tension.

Based on 6 First, the operation of the hand-operated Regulierhebels 26 described. The regulating lever 26 has a lever part 31 up, with a cam at its free end 32 connected is.

The with the lever part 31 swiveling cam 32 is located on a rotary lever 33 on, rotatably with the individual fan elements 28 the fan disk 18 connected is.

At the free pivoting lever part 34 of the regulating lever 26 sets a not shown Return spring 34 on, with the lever is held in a certain starting position.

Thus, by the hand-operated pivoting of the regulating lever 26 the outlet cross section of the fan disc 18 be set.

On the drive belt 38 is a slider 40 attached, the change in length of the drive belt 38 join in and the over a cam 41 on the free pivoting part of the regulating lever 26 is applied.

Thus, the slider changes 40 due to a moisture-related change in length of the drive belt 38 the pivotal position of the regulating lever 26 , so that a humid-controlled regulation of the fan disc 18 over the regulating lever 26 is guaranteed.

The displacement of the slider 40 takes place in the axial direction of the drive belt 38 namely in the directions of the arrows 42 ,

The drive belt 38 is flown with room air, which over the slot 10 in the direction of the arrow 11 in the Nachsaugkammer 37 is sucked in. This is achieved by the fact that the room air from the Nachsaugauslaß 6 the suction chamber 37 through the flow outlet 5 leaving fresh air is sucked.

The flow of air into the room results in a particularly fast, dynamic and highly sensitive regulation of the outlet cross-section of the fan disc, controlled by moist air 18 depending on the humidity of the room air.

Through the forced suction of room air in the Nachsaugkammer 37 It ensures that there is no moisture near the drive belt 38 can deposit, which would lead to a malfunction of the drive unit. This was a major disadvantage in the prior art.

The humidity-controlled regulation does not refer to the moisture content of the outside air 15 but on the moisture content of the room air, which can therefore be mixed on demand dry outside air.

It is shown schematically that the two associated outlets 5 . 6 through a venturi 44 communicate with each other, which is only in 7 and 8th is shown symbolically as a dashed line.

Due to the Venturi nozzle effect sucks out of the flow outlet 5 outgoing air, the air from the Nachsaugauslass 6 to.

The 9 the basic principle in abstract form. In the interior of the supply air element 1 is a partition 36 is arranged, the two chambers 35 . 37 sealed from each other.

The outside air flow is in the upper outflow chamber 35 deflected in a vertical direction, as in 9 specified. Due to the forced airflow from the flow outlets 5 The room air is from the arranged below and airtight related Nachsaugauslass 6 sucked.

The principle is schematized in 10 shown. It is through the slot cross-section 45 a Venturi nozzle 44 formed in the sidewall 46 the housing of the supply air element 1 is arranged and thus to an admixing and forced Nachsaugung the Nachsaugluftstromes 9 in the room side blown air stream 8th provides.

The 11 and 12 show a modified embodiment of in 10 Venturi nozzle shown 44 , in which the Nachsaugstrom 9 from the suction chamber 37 coaxially into the flow outlet 5 is introduced. This results in an improved suction effect for the out of the Nachsaugkammer 37 withdrawn room air 49 ,

LIST OF REFERENCE NUMBERS

1

Supply air

2

front cover

3

wall cover

4

exhaust port

5

flow outlet

6

Nachsaugauslass

7

arrow

8th

airflow

9

Nachsaugstrom

10

inlet slot

11

arrow

12

battery

13

Panel feed-through tube

14

End cover

15

outside air

16

arrow

17

arrow

18

serrated washer

19

output port

20

deflecting section

21

Sound Absorber

22

Sound Absorber

23

distribution chamber

24

rotary drive

25

Kammewand

26

Control Lever

27

outlet

28

fan element

29

arrow

30

pivot bearing

31

lever part

32

cam

33

lever

34

Return spring

35

outflow

36

partition wall

37

Nachsaugkammer

38

drive belt

39

clamping

40

pusher

41

cam

42

arrow

43

axis of rotation

44

venturi

45

Slot section

46

Side wall

47

connection collar

48

filter unit

49

room air

50

room

51

fresh air

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• FR 2544471 A1 [0001]
• DE 69409311 T2 [0001]
• DE 2040382 C2 [0001]
• WO 20040063635 A1 [0001]

Claims (11)

Supply air element (1) with moist air controlled regulation of the room air (49) in a room (50), wherein in dependence on the humidity of the room air (49) a regulated amount of fresh air (15, 51) of the room air (49) is immiscible, and the Regulating unit (34, 38, 40) for the admixture of fresh air (15, 51) consists of a controllable in the flow area, directed into the space discharge unit (18, 28, 26), which is driven by a moisture-sensitive sensor, characterized in that the sensor of the control unit (34, 38, 40) of a forced air flow of the room air (49) is flowed. Supply air element after Claim 1 , characterized in that the sensor is designed as a variable length under the influence of moisture drive belt (38). Supply air element after Claim 1 or 2 , characterized in that in the space (50) directed fresh air flow (15, 51) via a Venturi nozzle effect (44, 45) in the housing of the Zuluftelementes (1) sucks the drive belt (38) flowing through the room air flow (49). Supply air element according to one of Claims 1 to 3 , characterized in that in the housing of the Zuluftelementes (1) at least two air-tightly separated chambers (35, 37) are arranged, and the moisture-sensitive drive belt (38) is arranged in the one room air-facing Nachsaugkammer (37) and is flowed by room air, while in the other outflow chamber (35) the fresh air-leading, in the space discharge unit (18, 28, 26) is arranged, and that in the fresh air-leading outflow chamber (35) at least one flow outlet (5) in the manner of a venturi (44) is arranged, which sucks the room air (49) in the Nachsaugkammer (37). Supply air element according to one of Claims 1 to 4 , characterized in that the fresh air-leading Ausströmeinheit (18, 28, 26) consists of a drive belt (38) rotatably driven fan disc (18) whose sector-shaped fan elements (28) relative to the housing fixed sector-shaped outlet openings (27) can be brought into controlled coverage , Supply air element according to one of Claims 1 to 4 , characterized in that the fresh air-leading outflow unit (18, 28, 26) consists of a blind unit whose blades are pivotally driven by the moisture-sensitive drive belt (38). Supply air element according to one of Claims 1 to 6 , characterized in that the fresh air side of the supply air element (1) via a sound-insulating and filtering wall duct (13) connected to a fresh air inlet. Supply air element according to one of Claims 1 to 7 , characterized in that the room-side outflow of the fresh air (51) from at least one wall-parallel outlet slot (4). Supply air element according to one of Claims 1 to 8th , characterized in that on the side of the inlet air element (1) flow outlets (5) are arranged from which a proportion of outside air (15, 51) flows in forced flow as air flow (8) in the space (50), and that in airtight proximity to the fresh air-leading flow outlets (5) are arranged air-carrying Nachsaugauslässe (6). Supply air element according to one of Claims 1 to 9 , characterized in that the Nachsaugkammer (37) at the bottom by an inlet slot (10) air-conducting with the room air (49) is connected and that the moisture-sensitive drive belt (38) stretched parallel to the longitudinal extent of the inlet slot (10) between two clamping points (39) is. Supply air element according to one of Claims 1 to 10 , characterized in that the drive belt (38) with a slider (40) is connected, whose longitudinal displacement is transmitted via a pivotally mounted in the housing lever (34) as a rotary drive of the fan disk (18).

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