An airflow controller in a pneumatic vacuum elevator and a method to operate the same

A method 300 for operating the airflow controller for controlling airflow in a pneumatic vacuum elevator comprising:

• providing, a bottom portion adapted as a hollow stepped cylindrical structure, wherein the diameter of a top part of the stepped cylindrical structure is greater than the diameter of the bottom portion of the stepped cylindrical structure;
• 302
• disposing, a plurality of plates at a plurality of predetermined positions on a bottom surface of the stepped structure to accommodate a plurality of fasteners;
• 304
• providing, a cylindrical protrusion configured substantially at a centre portion of the top portion with a projection on an outer face of the cylindrical protrusion, wherein the projection is in a cylindrical shape;
• 306
• attaching, a metal plate to the top portion;
• 308
• providing, a hollow circular structure on a disc with an upper face and a bottom face, wherein a diameter of the bottom face is adapted to accommodate the upper face;
• 310
• positioning, a plurality of extensions on the upper face of the disc at predetermined positions on the disc;
• 312 and
• accommodating, a solenoid valve by the hollow circular structure and configured to open based on a timer disposed on a panel circuit board thereby controlling speed of an elevator cabin during landing. 314

A pneumatic vacuum elevator 200 comprising:

• an external cylinder assembly 210 comprising an elevator cabin 220 inserted therein, wherein the external cylinder assembly 210 comprises a plurality of cylinders coupled using a base ring assembly 211 and a band ring assembly 212;
• a guide rail pillar 213 mechanically coupled to the elevator cabin 220, wherein the guide rail pillar 213 is disposed at the external cylinder assembly 210, wherein the guide rail pillar 213 is configured to guide an actuation of the elevator cabin 220;
• a polycarbonate sheet 214 configured to cover the external cylinder assembly 210, wherein the polycarbonate sheet 214 and the external cylinder assembly 210 is coupled using a first locking device and a second locking device, wherein the first locking device is configured to lock an air gap between the polycarbonate sheet 214, the base ring assembly 211 and the external cylinder assembly 210 and the second locking device is configured to lock air gap between the polycarbonate sheet 214 and the guide rail pillar 213;
• a seal assembly 215 adapted to fit over a top portion of the elevator cabin 220, wherein the seal assembly 215 is configured to seal the elevator cabin 220 to reduce vibrations during upward and downward movement of the elevator cabin 220,
• wherein the seal assembly 215 comprises a depressurizing system configured to prevent the elevator cabin from coming into force contact with the external cylinder assembly during upward movement and contribute to safety of an elevator operation;
• and
• an airflow controller 100 located on top of the external cylinder assembly 210, wherein the airflow controller 100 comprises:
• a bottom portion 102 adapted as a hollow stepped cylindrical structure 104,
• wherein the diameter of a top part of the hollow stepped cylindrical structure 104 is greater than the diameter of the bottom portion of the hollow stepped cylindrical structure 104, and
• wherein the bottom portion 102 comprises:
• a plurality of plates 108 disposed at a plurality of predetermined positions on a bottom surface of the hollow stepped cylindrical structure 104 to accommodate a plurality of fasteners;
• an upper portion 110 connected with the bottom portion 102, wherein the upper portion 110 comprises:
• a cylindrical protrusion 112 configured substantially at a centre portion of the top portion with a projection on an outer face of the cylindrical protrusion 112, wherein the projection is in a cylindrical shape;
• and
• a metal plate 114 attached to the upper portion 110;
• and
• a disc 116 comprising a hollow circular structure 118 with an upper face 116a and a bottom face 116b, wherein a diameter of the bottom face 116b is adapted to accommodate the upper face 116a, wherein the disc 116 comprises:
• a plurality of extensions 120 positioned on the upper face 116a at predetermined positions on the disc 116;
• and
• a solenoid valve 122 accommodated by the hollow circular structure 118 and configured to open based on a timer disposed on a panel circuit board thereby controlling speed of an elevator cabin during landing.