Air dryer housing, air dryer assembly, compressed-air supply system, and vehicle

An air dryer arrangement comprising:

• an air dryer housing including:
• a desiccant container having a chamber fillable with desiccant and having a desiccant side;
• a port device configured to connect said air dryer housing to a compressed-air supply providing a compressed-air flow;
• said port device being connectable in a pressure-tight manner to said desiccant container on said desiccant side thereof;
• said port device having, at said desiccant side, a valve body projecting into said chamber of said desiccant container;
• a valve piston movable in said valve body;
• said valve body and said valve piston conjointly defining a ventilation valve unit configured as a pneumatic relay valve;
• said port device having a system-side port side and said port device being connectable to a compressed-air supply system;
• and,
• said valve piston being movable between a first position wherein said compressed-air flow passes through said desiccant container in a first direction and a second position wherein said compressed-air flow passes through said desiccant container in a second direction;
• said air dryer arrangement further comprising:
• a regeneration switching valve configured as a 2/2 directional solenoid valve;
• and,
• said regeneration switching valve being configured to selectively establish a pneumatic connection between a pneumatics main line and a regeneration port.

An air dryer arrangement comprising:

• an air dryer housing including:
• a desiccant container having a chamber fillable with desiccant and having a desiccant side;
• a compressed-air supply;
• a port device configured to connect said air dryer housing to said compressed-air supply providing a compressed-air flow;
• said port device being connectable in a pressure-tight manner to said desiccant container on said desiccant side thereof;
• said port device having, at said desiccant side, a valve body projecting into said desiccant container;
• a valve piston movable in said valve body;
• said valve body and said valve piston conjointly defining a ventilation valve unit configured as a pneumatic relay valve;
• said port device having a system-side port side and said port device being connectable to a compressed-air supply system;
• said valve piston being movable between a first position wherein said compressed-air flow passes through said desiccant container in a first direction and a second position wherein said compressed-air flow passes through said desiccant container in a second direction;
• said desiccant being in loose and/or granular form;
• said port device being configured to connect said air dryer housing to said compressed-air supply with said compressed-air supply being the compressed-air supply system for operating a pneumatic system;
• and,
• said compressed-air supply being the compressed-air supply system for operating a pneumatics system with said compressed-air flow.

A compressed-air supply system for providing a compressed-air supply to a pneumatic system including an air spring system of a vehicle, the compressed-air supply system comprising:

• an air dryer housing;
• and,
• said air dryer housing including:
• a desiccant container having a chamber fillable with desiccant and having a desiccant side;
• a port device configured to connect said air dryer housing for providing a compressed-air flow;
• said port device being connectable in a pressure-tight manner to said desiccant container on said desiccant side thereof;
• said port device having, at said desiccant side, a valve body projecting into said chamber of said desiccant container;
• a valve piston movable in said valve body;
• said valve body and said valve piston conjointly defining a ventilation valve unit configured as a pneumatic relay valve;
• said port device having a system-side port side and said port device being connectable to said compressed-air supply system;
• and,
• said valve piston being movable between a first position wherein said compressed-air flow passes through said desiccant container in a first direction and a second position wherein said compressed-air flow passes through said desiccant container in a second direction.

A vehicle having a pneumatic system including an air spring system, the vehicle comprising:

• an air dryer housing including:
• a desiccant container having a chamber fillable with desiccant and having a desiccant side;
• a port device configured to connect said air dryer housing to a compressed-air supply providing a compressed-air flow;
• said port device being connectable in a pressure-tight manner to said desiccant container on said desiccant side thereof;
• said port device having, at said desiccant side, a valve body projecting into said chamber of said desiccant container;
• a valve piston movable in said valve body;
• said valve body and said valve piston conjointly defining a ventilation valve unit configured as a pneumatic relay valve;
• said port device having a system-side port side and said port device being connectable to a compressed-air supply system;
• and,
• said valve piston being movable between a first position wherein said compressed-air flow passes through said desiccant container in a first direction and a second position wherein said compressed-air flow passes through said desiccant container in a second direction.