Arrangement for ventilating a rail vehicle compartment

Abstract

An arrangement for ventilating a compartment in a rail vehicle to reduce a possibly harmful concentration of a gas in the compartment includes a component in the compartment releasing a gas concentration into the compartment in the event of a leak. A passenger accommodation area of the rail vehicle is connected to the outside of the rail vehicle via a ventilation system such that fresh air passes from the outside into said passenger accommodation area, is mixed there with circulating air in said passenger accommodation area, and is subsequently distributed as supply air in said passenger accommodation area. Said passenger accommodation area is connected to the compartment via an air duct configured such that a portion of the supply air is removed from said passenger accommodation area as outgoing air and is conducted in a unidirectional direction into the compartment to ensure a specified gas concentration there.

1 - 16 . (canceled) 
     
     
         17 . An arrangement for ventilating a rail vehicle, the arrangement comprising:
 a compartment and a passenger accommodation area both disposed in the rail vehicle;   said compartment containing a component releasing a gas concentration into said compartment in an event of a leak;   a ventilation system connecting said passenger accommodation area to surroundings of the rail vehicle, causing fresh air to pass from the surroundings into said passenger accommodation area, to be mixed in said passenger accommodation area with circulating air present in said passenger accommodation area and to be subsequently distributed as supply air in said passenger accommodation area;   an air duct connecting said passenger accommodation area to said compartment;   said air duct configured to remove a portion of the supply air from said passenger accommodation area as outgoing air and to conduct the outgoing air in a unidirectional direction into said compartment to ensure a specified gas concentration in said compartment;   said component disposed in said compartment being a constituent part of a refrigeration machine carrying out cooling aided by a cold vapor process and releasing a gaseous refrigerant in the event of a leak.   
     
     
         18 . The arrangement according to  claim 17 , wherein said refrigeration machine has annularly interconnected components including a compressor, an evaporator, a tension relief valve, a liquefier and a refrigerant, said refrigerant flowing through said annularly interconnected components in different states of aggregation via a duct system. 
     
     
         19 . The arrangement according to  claim 18 , wherein said refrigeration machine component disposed in said compartment is said liquefier. 
     
     
         20 . The arrangement according to  claim 18 , wherein said refrigeration machine has further refrigeration machine components disposed in said compartment, said further refrigeration machine components including at least one of said compressor or said tension relief valve. 
     
     
         21 . The arrangement according to  claim 18 , wherein said evaporator is disposed in said compartment. 
     
     
         22 . The arrangement according to  claim 18 , wherein said evaporator is coupled to said passenger accommodation area. 
     
     
         23 . The arrangement according to  claim 22 , wherein:
 said evaporator is at least partially disposed in said passenger accommodation area, or   said evaporator is disposed externally to said passenger accommodation area and an intermediate circuit connects said evaporator to said passenger accommodation area,   
       causing heat to be extracted from the circulating air mixed with fresh air and causing the heat to be removed from said passenger accommodation area and supplied to said refrigeration machine refrigerant evaporating because of a supply of heat. 
     
     
         24 . The arrangement according to  claim 18 , wherein:
 said annularly interconnected components of said refrigeration machine are configured to cause:
 said coolant evaporated by an absorption of heat to pass in gaseous form from said evaporator to said compressor, 
 in said compressor, said gaseous refrigerant to be provided with an increased pressure level and temperature level and to pass from said compressor to said liquefier, 
 in said liquefier, said gaseous refrigerant to condense to output heat to air surrounding said liquefier, 
 liquefied refrigerant to pass from said liquefier to said tension relief valve to reduce pressure and to lower a temperature level of said refrigerant, and 
 liquid refrigerant to pass from said tension relief valve to said evaporator to begin a cooling circuit again. 
   
     
     
         25 . The arrangement according to  claim 17 , wherein said compartment is at least one of structurally or spatially separated from said passenger accommodation area. 
     
     
         26 . The arrangement according to  claim 17 , which further comprises a further ventilation system connecting said compartment to the surroundings of the rail vehicle for ventilating said compartment. 
     
     
         27 . The arrangement according to  claim 26 , wherein:
 said further ventilation system of said compartment is configured to cause at least one of:
 intake air originating from the surroundings to be conducted via said component contained in said compartment, or 
 the outgoing air to pass back again either on its own or together with the intake air as exhaust air to the surroundings of the rail vehicle. 
   
     
     
         28 . The arrangement according to  claim 27 , wherein a supply of the outgoing air into said compartment is configured as a continuous supply ensuring that said specified gas concentration in said compartment is maintained via the outgoing air when said further ventilation system of said compartment is inactive. 
     
     
         29 . The arrangement according to  claim 26 , wherein said further ventilation system of said compartment conducts the intake air originating from the surroundings via said liquefier for heat transfer purposes, causing heat from said refrigerant to be transferred via said liquefier to the intake air.