DE1405364A1 - Air heater for vehicles - Google Patents

Description

wt / ra, H05364

Maschinenfabrik Augeburg-Nürnberg AG Nuremberg

Nuremberg, December 23, 1959 Air heater for vehicles

In large motor vehicles heated with warm air, the air is for heating the vehicle in general at widely spaced locations Promote bodies. In buses, for example, the passenger compartment must be heated »the driver's seat is separate to heat, and finally hot air is needed to heat the windshield.

So far, this requirement has been met in such a way that a main pipe leading the heated fresh air for the individual heating points. In the main pipe there was a heater that could be switched on and off as required and a heat exchanger switched on, the heat exchanger taking its heating energy from the cooling water of the vehicle engine related · The heating, which can be switched on and off as required, was in operation when the drive motor was at a standstill. With ongoing · » This heater was switched off in the vehicle engine and the warm air was added to the one with the engine cooling water Heat exchanger heated

The known arrangement with the ron branching off the main line Branch lines have several disadvantages. The branches generally branch off at various points from the main line. Since the branch air 3trοωβ »ίηκαΐη regulated should be «are thereby rules» grif.f «an» to some extent

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remote locations of the vehicle required, whereby the vehicle heater is expensive and complex. Frequently it creates constructive difficulties at all, the control organs from the driver's seat to the place of regulation respectively. In addition, there is the attachment of the branch nozzles For reasons of space, it is often not possible where it can be attached, taking into account the length of the control organs and the effectiveness of the heating would be desirable.

In order to have a simpler structure and operation The invention proposes to create a clearer vehicle heating system, starting from an air heating device for vehicles, especially large vehicles, with a Heater that can be switched on and off as required and another heater connected downstream of this heater, that its heating energy from the cooling water of the vehicle engine refers, before that the downstream heater is arranged in a Luftverteilkaeten to which the various heating points of the vehicle heating system are connected directly, i.e. without further distribution devices are.

In a heating device according to the invention, smooth, non-branch lines are used. The airflow can be regulated centrally, i.e. at one point, and the regulation of the air flow does not hinder at numerous Make the structure of the vehicle.

According to a further feature of the invention, the air inlet openings are and the Luftaualaflufft,, u £ βη of the air distribution

kastena independently adjustable. 909836/0310

* H0536A

Furthermore, a conveyor fan for the heating air arranged Min

Finally, the air distribution box should optionally be a mixture from uncooled fresh air from outside the vehicle and recirculated air from inside the vehicle or pure recirculated air can be fed.

An air distribution box according to the invention nit him neighboring parts of the heater is shown schematically in the drawing shown, wherein the Fig. 1,2 show two mutually perpendicular views of the Luftverteilkaotens.

From the electrical heater 1, which can optionally be switched on and off, the air circulation line 2 leads to the air inlet 3 of the air distribution box 4. The air is supplied to the heater 1 as circulating air from the passenger compartment of the vehicle (bus). The air distribution box 4 is essentially a housing which is closed on all sides and which, in addition to the air inlet 5, has a duct 5, two further line connections 6, 7 and a free air inlet β. The air inlet gills 5 open into the passenger compartment of the vehicle. A line connected to the line connection 6 leads to the driver's seat of the vehicle and a line connected to the line connection 7 leads to the air outlet nozzles of the windshield protection window. The fresh air inlet opening θ is in communication with the outside air surrounding the vehicle. 2) 1 · Exit cross-sections of the air outlet gills 5 can be regulated with a button 9.

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Per cross section of the fresh air inlet β can be closed more or less with a blind 10. The blind 10 guided on the inside of the air distribution box 4 can be adjusted with a cable 11. Further regulating organs can be provided, depending on the requirements, on air distribution boxes for regulating the cross-sections of the line connections 6, 7.

Inside the air distribution box are the fan 12 and a heat exchanger 13 is arranged. The heat exchanger 13 is from the cooling water of the water-cooled vehicle engine flows through before it enters the vehicle's water cooler got.

If the vehicle engine is at a standstill or if the vehicle engine is still so cold during operation that the cooling water is cold, then the fresh air inlet 8 of the blind 10 is closed · With the heater 1 switched on and the fan 12 running the circulating air is extracted from the passenger compartment and heated in heater 1. According to the measure in which the regulating organs the line connections 5, 6, 7 of the air distribution box release their cross-sections, the heated circulating air flows out of the air distribution box. A major advantage is that there is cooling water in the vehicle engine Heat exchanger 13 is heated, the start of the vehicle was favored. If the cooling water is hot, there will be « Heater 1 is turned off, the air inlet 8 is opened and when the fan is running, the dee uenieoh also becomes less heated

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Open air and unrestrained circulating air in the air distribution box sucked. The air mixture is heated at heat exchanger 13 and arrives again according to the UaB of the opening of the Line connections 5 »6, 7 to the parts required.

The warning device 13 can shut off rom the cooling water circuit so that in the Somaer with the same system not heated fresh air in the passenger compartment baw. to the Driver's seat are promoted Sann.

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Claims (3)

. U0536A Maschinenfabrik Augaburg-Kürnberg AG Nuremberg Hürnberg, December 23, 1959 Patent claims 1. Air conditioning for vehicles, especially large vehicles, with an optional on and off a heater and a heater attached to it Another heating device, which draws its hot energy from the cooling water of the vehicle engine, thereby characterized in that the nachgesohaltete heater (heat exchanger 13) is arranged in an air distribution box (4) to which the various heating points of the Vehicle heating directly, i.e. without further distribution devices, are connected 2. Heating device according to claim 1, characterized in that the air inlet openings and the air outlet openings of the air distribution box (4) can be regulated independently of one another. 3. Heating device naoh claim 1 or 2, characterized by that the conveyor fan (fan 13} is arranged in the air distribution box (4). 4 «Heating device according to claims 1 to 5», characterized in that the laiftverteilkaeten (4) can be selected «· a genic of man * ing * cooled fresh air from outside the · vehicles · and recirculated air from the vehicle interior 909836/0310 pure air can be carried out.