DE7824440U1 - Flap valve - Google Patents

Description

PAT Ε * · N. ' T '· Α N ^ WAL T · Ε *,. *

R. SPLANEMANN ο «B. RElTZNER J. RICHTER F. VVERDERMANN

DlPL.-IMCi O. PL. -CmLM. DiPl.-ING. DIPL.-ING.

LfCiEi. VLHTRüTt.R Li. "■ <Ll ¹ A ÖNCHEN

: S'.ilJNAL

VAN JATA. W [ S AGHf-CS WfS L ¹ OEiI

HAMBURG

'. · Irma

AURORA Konrad G. Schulz

GmbH & Co. 6933 Mudau

8000 MUNICH 2 16 AUG. 1978

ToI 13

I ·. ¹ Or. 08v; -J7t? Ji I: i6709 W I ₀ .iri-ri · nwfrtiji Munich Itt'i ^. d 4 b nlu »J

1010-111-10.413

Usage cluster registration

Flap valve

The invention relates to a flap valve with a flap which has a pivot bearing, the axis of which is below Distance from an air passage opening is arranged and which, in addition to the rotational movement, is designed for a translational movement of the flap, and by an actuator is pivotable, which acts at a distance from the pivot axis and articulated on the flap.

Flap valves are used, for example, on the front of buses to prevent the pressure dropping during travel to either direct standing fresh air into the ventilation system of the vehicle or to keep it at a distance. Here it is essential that the air passage opening is completely closed v / can be grounded and this is still guaranteed even after a long period of operation. To operate the flap from To enable the driver's seat from, a handle is connected to the flap, which through

; De

, tsdifcBaakAp.Mcndjen account no. 2014 009. Poilsdieo

7824W0 12/07/78

Mjnoie- 600 60-807

Fluid is actuated and the flap jerks closes, especially since an increased closing pressure is expedient. In the known valves, the flap is pivotably mounted about an axis which is at a small distance is arranged behind the flap. To your perimeter elastic sealing material is attached to the flap, which when the flap is closed against the edge of the Lays the air passage opening and thus holds back the fresh air. Because the flap is pivoted about a fixed axis of rotation there is no uniform compression or deformation of the sealing material in the axial direction. Is the axis of rotation from the housing wall or the flap closed far away, the seal hits more strongly on the side remote from the axis of rotation than in the area of the Axis of rotation, v / o possibly always a small gap remains open. The opposite is true, if the axis of rotation is too close to the housing wall or flap. There is a further risk that the sealing material is glued in a wedge shape and the flap valve is only closed in the area of the axis of rotation is, but otherwise leaves a gap open for air to pass through. In both cases the sealing material will unevenly loaded. In the area of greater pressure, this leads to rapid wear and tear Leaks. In addition, on the sealing surfaces in the area of the insufficient sealing gap Dust and dirt deposits form, which also lead to accelerated wear and tear and poor sealing to lead.

The object of the present invention is therefore to provide a flap valve of the type explained in more detail at the beginning Ensure in the final closing phase that the sealing surfaces are as uniform as possible in the axial direction be stressed or compressed.

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This is achieved according to the invention that the flap for the vehicle ventilation in the form of an elongated Is formed rectangle, the pivot bearing is coaxial, guided in an elongated hole and itself having pins extending parallel to one of the longitudinal edges of the flap, an elastic sealing tape which Surrounding air passage opening is arranged on the housing wall facing against the direction of flow and on the surface of the flap facing the air passage opening a circumferential, raised surface Sealing edge is formed, which is a circular profile wire with a spherical, cylindrical surface and in the closed position of the flap is partially embedded in the sealing tape.

This has the advantage that the flap does completely swiveled out of the flow area in a known manner due to their one-sided mounting v / can ground, but in the last closing phase executes a movement that is not due to the geometry of the actuator is determined, but can be influenced by the seal itself or the fixed housing wall -.st. The flap is essentially aligned with respect to the air passage opening by the pivot bearing, however the swivel bearing has so much play parallel to the direction of flow that - as soon as an edge of the flap becomes stationary Housing wall or the attached seal touches - the pivot bearing a compensating movement of the Flap permitted if the actuator applies the last closing pressure to the flap. To do this, too, no shift to cause the flap parallel to the housing wall or air passage opening, the lever of the Actuator be rotatably mounted.

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Advantageously, the elastic sealing tape encloses not only the air passage opening, but also elongated holes in the front wall of the housing, through which a piston of the pusher of each of the actuating elements extends. The circumferential raised sealing edge presses into the elastic sealing tape when it is first touched, creating a new pivot bearing for the flap. Under the pressure of the swivel member, in the last closing phase, the flap executes a rotational movement in addition to the rotational movement, in that the flap is axially displaced in relation to the swivel loader. This has the advantage that the elastic sealing material is compressed uniformly in the axial direction and there is no shear effect whatsoever within the sealing material. The sealing material, which is only stressed axially, lies down evenly; around the raised sealing edge on the flap, so that a large arched b £ w. Partly cylindrical sealing surface is created on the entire circumference of the valve.

In the drawing, an embodiment of the invention is shown, which is based on the following description is explained in more detail. It shows:

Fig. 1 me part of the housing wall

an air passage opening and

part of the flap

and

Fi ^. 2 shows a section along line II-II in Fig. 1.

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Fig. 1 shows a housing wall 10 - from the air inlet side "considered - with an air passage opening 11 for attachment to the front of a bus. Lie housing wall 10 is expediently parallel to and arranged behind a ventilation inlet grille, not shown and extends substantially the entire width of the vehicle. Accordingly, the air passage opening 11 be designed as a wide rectangular slot. While driving, fresh air is applied under Back pressure according to arrow L the flap valve and passes through the housing when the flap is open.

The air passage opening 11 is enclosed by a sealing tape 12 made of elastically deformable plastic. As can be seen from Fig. 2, the sealing tape 12 has an approximately rectangular cross-section. It is made of foam plastic or the like.

The air passage opening 11 is assigned a flap 13 in the form of an elongated rectangle, which is the air passage opening 11 and the sealing tape 12 covered., On the upper and lower edge of the flap 13 are Foldings 14 and 16 which extend over the entire length of the flap 13 and stiffen it. Those made of aluminum, Stainless steel or another non-rusting material existing flap 13 can also extend in the longitudinal direction have extending beads to increase the flexural rigidity.

^f Inside the upper fold 16 are two bearing journals

welded in place, which extends coaxially over the end faces of the : Extend flap 13 out. The journals 17 protrude in

_t elongated bearing holes 15 formed on bearing parts 13

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"6 -

are, the "on both sides of the flap 13 on the housing wall "are attached. The bearing parts 18 are made of sheet metal, which is shaped according to FIG. 2, each with an elongated bearing hole 15 to form.

On both sides of the air passage opening 11 is located one elongated hole 19 in each case in the housing wall 10. An actuator 20 is always positioned through the elongated holes 19 with the flap 13 in connection. The actuators 20 expediently engage in the pivot bearing 17, "adjacent half of the rectangular shape of the flap 13 to this. With a suitable subdivision, the Distance from the upper fold 16 one third and [from the lower fold 14 two thirds of the height of the Flap 13.

The actuator 20 consists of a pneumatic one Handle, the T'ylinder 21 of which is at the outlet end of the Piston 22 is rotatably mounted at 23 on a bracket 24 which is attached to a wall 25 which is attached to the housing wall 10 connects in the direction of flow. At the front free end of the piston 22 is located a piston eye 26 which is rotatably mounted in a bearing block 27 which is attached to the rear of the flap 13 is. The elongated holes 19 are so large that the bearing blocks 27 in all pivot positions of the Fit flap 13 through this.

In the illustrated embodiment, a passage opening CJ for circulating air is in the base of the housing provided from the passenger compartment, which can be closed by an elastic flap 29. FiL '. 2 shows in f solid lines show the ram air flap 13 in the closed state and the flap 29 of the air recirculation valve

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■■ ± ₇ - '

opened. Over the width of the flap valve several passage openings 28 with individual Tabs 29 may be provided. Alternatively, no air circulation valve needs to be provided.

On the one pointing in the direction of the air passage opening 11 A circumferential raised sealing edge 30 is formed on the surface of the flap 13. The sealing edge 30 can consist of a circular profile wire that soldered or welded to the surface of the flap 15 ibt. The wire 30 can also be located at a small distance above the surface of the flap 13 can be arranged. Instead of the wire 30, a circumferential bead can also be used or other embossing, preferably with an oalliger surface, can be provided.

The wire 30 is pressed in evenly over its entire length the elastically deformable sealing tape 12. The sealing material closes at an angle of 180 ° around the wire 30 and forms a correspondingly wide sealing surface.

Since the bearing slot 15 for the bearing pin 17 is not, has play only in the direction of actuation of the actuator 20, but also across it, result in particular in the last closing phase at the top and bottom of the flap 13 compensation bearings, which thereby are formed that the sealing material 12 is effective as a pan in which the sealing wire 30 is pivotable. This results in a uniform seal over the entire circumference. Simultaneously is avoided that the sealing material is stressed by shear forces that lead to an accelerated Wear and tear. This one is particular

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due to the fact that the closing stroke .es pneumatic Pusher takes place very quickly. However, since the flap 13 automatically faces each other in the last closing phase the air passage opening can be set to 1 ", the sealing elements are essentially only axially claimed.

Since the actuators 20 are laterally next to the air passage opening 11 are located, they are outside the main stream, for the one inside the housing Guide or partition plate 31 can be provided, which in Fig. 2 is ieuxet and the fresh air flow L of the Separates the circulating air flow which passes through the opening 28 into the housing.

On the opposite of the Strörriungsrichturij L pointing Surface of the flap 13 can heating elements 3? arranged be, which extend in the longitudinal direction of the flap 13 and, for example, as an electrical resistance heater are designed. The heating elements 32 can be arranged in channels 33 that open onto the flap 13 are soldered. Alternatively, the channels 33 can be formed in one piece zit of the flap 13, if this for example from a 3-tier profile made of aluminum is formed. In this case, the heating elements can be omitted and the channels 33 with fluid, such as Water or oil.

Di, actuators 20 can be controlled by a pneumatic control unit operated v.-earth, which opens the flap 13 continuously and can stop in any position. The control can be done entirely or partially by hand or automatically, depending on the temperature in the vehicle, the pressure in the air duct or the driving speed,

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for example via the speedometer is possible. To the A silencer on the valve housing can reduce the strong noise of the discharged compressed air be disordered.

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Claims (16)

R. SPLANEMANN dr. B. REITZNER J.RICHTER F. WERDERMANN OIPL.-INIG. OIPL.-CHEM. DIPL.-ING. DIPL.-INS. REINS. REPRESENTATIVE AT THE EPO. · PROFESSIONAL REPRESENTATIVES BEFORE EPO · MANOATA.RES AQRfES PRES LOEB MÖNCHEN HAMBURG 8000 MUNICH 2 16 AUg. 1978 Tal 13 Teieion; C89) 22 62 07/2262 09 Telegram Inventiys Munich Telex: 12Β ·;] 8 .ntus d Our file = 1 01 0-III-1 0. 41 Your mark: claims 1. Flap valve with a flap which has a pivot bearing, the axis of which is at a distance from an air passage opening is arranged and designed in addition to the rotational movement for a translational movement of the flap is, and is pivotable by an actuator that is at a distance from the pivot axis and articulated to the Attacks flap, characterized in that the flap (13) for the vehicle ventilation in the form of an elongated Is formed rectangle, the pivot bearing (17, 18) coaxial, guided in an elongated hole (15) and parallel has pegs (17) extending to one of the longitudinal edges of the flap (13), an elastic sealing tape (12) surrounding the air passage opening (11) on the housing wall (10) facing against the direction of flow (L) is arranged and on the in the direction of the air passage opening (11) v / iron surface of the flap (13) a circumferential raised sealing edge (30) is formed, which is a circular profile wire with a convex, cylindrical Surface is and partially embedded in the sealing tape (12) in the closed position of the flap (13) is. 7ΐ (2444ϋ 12/7/78 -Z- 2. Flap valve according to claim 1, characterized in that the actuator (20) in the pivot bearing (17, 18) adjacent half of the rectangular shape of the flap (13) attacks on this. 3. Flap valve according to claim 1 or 2, characterized in that the actuator (20) on the in the direction the air passage opening (11) v / iron surface of the Flap (13) is connected. 4. Flap valve according to Claims 1 to 3, characterized in that the actuator (20) has a pusher on v / eist, the piston (22) of which is hinged to the flap (13). 5. Flap valve according to at least one of claims 1 to 4, characterized in that the cylinder (21) of the pusher at the outlet end of the piston (22) is rotatably mounted on a bracket (24) which is connected to the front wall (10) of the housing is connected. 6. Flap valve according to claim 4, characterized in that the trigger works pneumatically. 7. Flap valve according to at least one of claims 1 to 6, characterized in that the pivot bearing pin (1?) Are attached to the flap (13) and the bearing part (18) has the elongated bearing hole (15). 8. Flap valve according to at least one of the claims 1 to 7, characterized in that two actuators (20) act on the flap (13). 7824440 12/07/78 - 3 - 9. Flap valve according to claim 8, characterized by that the pistons (22) of the teiden S ^ ellorcane (20) are each through elongated holes (19) through which directly next to the narrow sides of the air passage opening (11) are arranged and run parallel to these. 10. Flap valve according to spoke 9, characterized in that that the elongated holes (19) are so large that the bearing blocks (27) attached to the flap (13) for the piston eyes (26) can be passed through them. 11. flap valve according to one of claims 1 to 10, characterized in that the elastically deformable Sealing tape (12) on the front wall (10) of the housing the air passage opening (11) and the elongated holes (19) encloses. 12. Flap valve according to one of claims 1 to 11, characterized in that on the opposite to the air ~ röa: ungsrichtung (L) v / iron surface of the flap (13) heating elements (32) are arranged. 13. flap valve according to one of claims 1 to 12, characterized in that the flap (13) consists of an extruded profile made of aluminum. 1- flap valve according to claims 12 and 13, characterized in that the extruded profile channels (33) for receiving the heating elements (32). 15. Flap valve according to claim 1, characterized in that that the pivot bearing (17, 18) also in vertical Towards Ssiel. 7824440 12/07/78