DD271351A1 - DRAIN TUBE HEATING FOR TOILETS, ESPECIALLY FOR TRAVEL TROLLEYS WITH PRESSURE VENTILATION - Google Patents

Abstract

The invention relates to a Abflussrohrbeheizung for toilets, especially for passenger coaches with Druckbelueftung. To avoid the risk of freezing drain pipes, the entire exhaust air volume of the toilet room is led through the drainage pipe into the open air. Fig. 1

Description

For this 1 page drawing

Field of application of the invention

The invention relates to a Abflußrohrbeheizung for toilets, especially for passenger cars with pressure ventilation, which are equipped with a toilet, the fecal matter reach the outside.

Characteristic of the known technical solutions

There are known passenger cars with toilets, which have the disadvantage that at low outdoor temperatures, the drainpipes can freeze. Known technical solutions for reducing or eliminating the risk of freezing discharge pipes based solely on the supply of heat by arranging electrical heaters, or liquid and warm air-carrying sheaths. These include the proposals for invention according to DD-PS 61009, DD-PS 63067 and DD-PS 93357. The solutions known in the prior art are associated with additional construction costs and usually with an additional energy consumption to be generated.

Object of the invention

The aim of the invention is the development of a Abflußrohrbeheizung for toilets, especially for passenger cars with pressure ventilation, over the known solutions, a heating of the drain pipe without significant construction? applications and without additional energy and auxiliary energy requirements.

Explanation of the essence of the invention

The inventive Löcung has the object to ensure the discharge of feces from toilets, especially passenger coaches, at low outside temperatures.

According to the invention the object is achieved in that in the car floor an air guide member is arranged, which is preferably a conical shape hai, the toilet room is open at a certain distance above the car floor ends and ends at the opposite end in the drain pipe rr. The air guide part has opposite the toilet drain a larger diameter, so that a defined annular gap is present. With such an arrangement, the heating of the drainage pipe can be realized as follows:

By prevailing in passenger cars with pressure ventilation overpressure to the atmosphere exhaust air is supplied from the passenger compartments of the toilet and leaves as exhaust air not on the exhaust fan in the roof area, but on the air guide part and the drainpipe the car. This type of exhaust air duct is supported by the suction nozzle when driving the car. Due to the constant throughput of air at room temperature through the drain pipe, the heat content of the exhaust air of the toilet is effectively used to Frostfreihaitung the drainpipe.

embodiment

The invention will be explained in more detail below using an exemplary embodiment. The accompanying drawing shows:

1: arrangement of the air guide part in the toilet drainage system,

In the car floor 1 of a passenger coach is an air guide part 3, which preferably has the shape of a conical, open to both suites, pipe, which surrounds the Toilettennbfluß 2 partially in such a way that a.

defined annular gap between toilet drain 2 and air guide part. ') Is present. The Lufrführungsteil 3 opens on the one hand at a defined distance in front of the top of the carriage floor 1 open in the toilet room and the other open in the drain pipe 4, at the lower end of the suction nozzle 5 is located.

The fecal pass through the toilet drain 2, the lower part of the air guide part 3 and the drain pipe 4 with suction nozzle 5 into the open.

The entire exhaust air of the toilet room is guided through the air guide part 3 in the drain pipe 4 with suction nozzle 5 and passes from there to the outside.

Claims (2)

1. Abflussrohrbeheizung for toilets, especially for passenger cars with pressure ventilation and open toilet systems, characterized in that in the car floor (1) an air guide member (3) is arranged, which preferably has a conical shape whose diameter is so large that between the air guide part (3 ) and toilet drain (2) a defined annular gap is present and on the one hand open in the toilet room and on the other hand open into the drain pipe (4). 2. Abflußrohrbeheizung for toilets according to claim 1, characterized in that the heating medium is the entire exhaust air volume of the toilet room.