DE7141863U - Ventilation device for passenger vehicles, in particular omnibuses - Google Patents

Description

The invention relates to a ventilation device for Passenger vehicles, in particular buses, with at least one running in the longitudinal direction of the passenger compartment ceiling Ventilation duct in the area of the front of the vehicle has an air inlet opening directed against the wind and air outlet openings opening into the passenger compartment.

The draft-free fresh air supply is particularly important in buses of the passenger compartment of the utmost importance to the well-being of the passengers, those at currently known Ventilation devices of the type mentioned are often possible! It is necessary to provide fresh air for each of the Adjust seats individually. For this purpose, the outlet openings are preferably each above a row of seats

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arranged ventilation channels as pivotable nozzles formed, which are arranged at a height that can be reached by the passengers above each seat and with respect to their passage cross-section are designed to be adjustable.

However, since the superstructures of many passenger vehicles, in particular almost all bus bodies are designed with a demolition rear and this due to its aerodynamically unfavorable shape, experience has shown that in the Faiar wind, at least on the rear Rear pressure wave propagating in the area of the passenger compartment causes, prevents this or at least hinders the outflow of those in the ventilation duct under the wind pressure Fresh air through the ventilation nozzles. The ventilation device is therefore in many cases not at all or only insufficiently effective, at least in the rear area of the passenger compartment.

The invention is based on the object of reducing the effectiveness of a ventilation device of the type mentioned at the beginning To improve construction effort. This is achieved by that at least one ventilation duct of the rear passenger compartment area with the duct end on the outlet side in the wind suction angle behind the front of the vehicle opening into the open air is.

A ventilation duct arranged in this way results in considerable advantages, in particular with regard to its low production and assembly costs. Due to the pressure gradient between the dynamic pressure of the driving wind in the ventilation duct and the suction pressure in its suction angle behind the front of the vehicle, not only the rear pressure wave in the passenger compartment is reduced, but also a pressure gradient in the latter compared to Qem

Wind pressure in the ventilation duct caused so that from all of its outlet openings a stream of fresh air in each case penetrates the passenger compartment at high speed and ensures extremely effective ventilation for this.

If the ventilation device has, in the manner already described, a ventilation duct arranged above a row of seats in the passenger compartment to the side of a walkway and an adjustable breast forming its outlet openings, it is expedient if at least one of the outlet openings of the ventilation duct is in one of the inlet-side end of the ventilation duct Abüländlichen ceiling area of the passenger compartment with the outlet direction to the walkway, optionally on a cross-sectional area of the ventilation duct leading to this, and optionally equipped with a closure flap. The adjustable outlet nozzles of the ventilation duct are very often handled incorrectly by the passengers or ignored at all, so that in many cases a larger number of the outlet nozzles remain in a position that directs the air flow in the wrong direction or completely blocks the air flow, which at least partially significantly affects the air supply to the passenger compartment will. Such an inadequate supply of fresh air to the passenger compartment can also be caused by the fact that several passengers find the air jet directed at them or in their surroundings uncomfortable or fear a cold and turn the nozzle into a closed position. In such a case, the fresh air is then passed through the kit in the direction of the outlet to the gangway, the outlet opening or the outlet openings of the ventilation channel pointing into the gangway area without nuisance or health risk to the passengers. For example the aisle-side outlet openings

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either open or closed v / earth or;, < if necessary by elastic means in a closing tellu be pretensioned so that they open automatically, the wind pressure in the ventilation duct due to a lot of closed Outlet nozzles a certain overpressure c. ^ - U · '"' '' the air pressure in the passenger compartment.

The invention is explained below with reference to the attached Zfic explained in more detail. In this show:

Fig.1 is a schematic side view of a

Passenger vehicle? with a ventilation device of the type described above;

FIG. 2 is a schematic plan view of the passenger vehicle according to FIG. 1, and

Fig. 3 is a schematic section along the ·? line IH-III of Figure 2.

In the drawing is an exemplary embodiment of a passenger vehicle with a ventilation device represents a bus, the .in the area of the front of the vehicle has an air inlet opening 1 directed against the wind FW, through-ch which the driving wind FW can penetrate into at least one ventilation duct 2, which extends in the longitudinal direction of the passenger compartment ceiling this from the air inlet opening 1 to the rear area of the passenger compartment is arranged to run. In the passenger compartment, rows of seats SR are arranged on both sides of an I-aisle LG, the ventilation duct 2 above each seat an air outlet opening opening into the passenger compartment, which in the exemplary embodiment is formed by a nozzle 3. the

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Nozzles J are each known in a known manner by means of a ball joint mounted pivotably and with respect to their passage cross The section can be adjusted by turning it axially. The untex * the airflow pressure in the ventilation duct 2 can stand air therefore, as shown in Figo via the nozzle 3 with adjustable flow direction and adjustable flow volume can be fed as fresh air FL to each of the seats.

As can be seen in particular from FIGS. 2 and $, in addition to the ventilation duct 2, a further duct 4 is arranged to run along the passenger compartment ceiling. However, while the ventilation channel 2 is closed in the rear area of the passenger compartment, the v / urther channel 4 according to Figure 2 in the rear region of the passenger compartment for the room air RL an inflow opening 4a and is connected to the outlet end in Fahrwindsοgwinkel SW (in Figure .2 indicated by hatching) the front vehicle front arranged opening out, so that it forms a ventilation channel for the rear passenger compartment area.

In the exemplary embodiment, the channels 2, 4 are arranged next to one another running parallel on the inside of the passenger compartment ceiling, the ventilation duct 4 running in the corner curvature area of the passenger compartment ceiling, which forms part of the duct wall both for ventilation duct 2 and for ventilation duct 4 and in the driving wind suction angle SW the front of the vehicle has an opening 4b which is covered by a gill screen and which forms the mouth opening of the ventilation duct 4 on the outlet side.

As indicated in FIGS. 2 and 3 with dashed lines, the ventilation channel 2 can have, in addition to the nozzles 3 or instead of the latter, at least one air outlet opening 2a which is in a ceiling area of the spaced from the inlet end or the inflow opening 4a of the ventilation channel 4 The passenger compartment is arranged with the outlet direction to the walkway LG and, if necessary, can be closed by an associated flap 2a '. This can optionally be biased by elastic means, not shown, into a closed position of the outlet opening 2a.

As also indicated in FIG. 3 with dash-dotted lines, the ventilation duct 2 could have a cross-sectional area 2 ¹ led to or over the walkway LG and at this in a ceiling area of the inlet-side end or the inflow opening 4a of the ventilation duct 4 Passenger compartment have at least one air outlet opening 2 "with the outlet direction to the walkway LG.

The invention is particularly relevant to the design and arrangement of the ventilation duct 2 and the ventilation duct 4 is not limited to the embodiment shown in the drawing. At least one of these channels could also be on the Be arranged outside of the passenger compartment ceiling or the vehicle body. It would also be conceivable to use the air inlet opening of the ventilation duct 2 an adjustable cap 1 ' to be assigned, which is only indicated by dotted lines in FIG.

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Claims (4)

■ - 7 - - ft χι ε ρ r ü C i "i e 1. Ventilation device for passenger vehicles, instes special Omnibuses, with at least one in the longitudinal direction of the passenger compartment ceiling running ventilation duct, which is in the bleach the front of the vehicle has an air inlet opening directed against the wind, and air outlet openings opening into the passenger compartment has, characterized in that at least one ventilation duct (4) of the rear passenger area with the exhaust-side The end of the duct in the wind suction angle (SV) behind the front of the vehicle Is arranged opening out into the open. 2. Device according to claim 1, with a ventilation duct arranged above a row of seats in the passenger compartment to the side of a walkway and one adjustable type of nozzle forming its outlet openings, characterized in that at least one of the air outlet openings (2a or 2 ") is in one of the inlet-side end ( 4a) of the ventilation duct (4) spaced area of the passenger compartment with the outlet direction to the walkway (LG), optionally on a cross-sectional area (2 ¹ ) of the ventilation duct leading to this. 3. Device according to claim 2, characterized in that the air outlet opening (2a) of the ventilation duct (2) directed towards the walkway (LG ^{) is assigned a closure flap (2a 1} ) and is optionally biased into a closed position by elastic means. 4. Ein.rich.tvmg according to venigst ens one of claims 1 to 3 ·> d ad ur c hge k e η η ζ e i c h net that the ventilation channel (4) and dec Beluftungskanal (2) on the passenger nobcneinander Up ceiling, optionally innG7Saaib DEI "the latter in a Ranakrümnjun ^ sb'j.reich, are arranged, 5. Device according to claim 4, characterized in that part of the duct wall of the ventilation duct (4) and / or of the ventilation duct (2) is formed by the passenger compartment ceiling. 7141613-M. TS