Air purification apparatus for vehicle

Patent metadata

Field	Value
Publication number	US-2020223293-A1
Application number	US-201916718229-A
Country	US
Kind code	A1
Filing date	Dec 18, 2019
Priority date	Jan 16, 2019
Publication date	Jul 16, 2020
Grant date	—

Abstract

An air purification apparatus includes an adsorption unit, a purification passage, and a regeneration passage. The adsorption unit adsorbs carbon dioxide and water vapor in air. The purification passage introduces air in a passenger compartment into the adsorption unit, and returns air, from which the carbon dioxide and the water vapor are adsorbed and removed by the adsorption unit, into the passenger compartment. The regeneration passage introduces air for regeneration into the adsorption unit, and discharges used air for regeneration obtained by regenerating the adsorption unit to an outside of the vehicle. An upstream side of the adsorption unit of the regeneration passage and the purification passage is constituted by an internal air introduction pipeline configured to introduce air from the passenger compartment.

First claim

What is claimed is:

1 . An air purification apparatus for a vehicle comprising:
an adsorption unit configured to adsorb carbon dioxide and water vapor in air; a purification passage configured to introduce air in a passenger compartment into the adsorption unit and to return air, from which carbon dioxide and water vapor have been adsorbed and removed by the adsorption unit, to the passenger compartment; and a regeneration passage configured to introduce air for regeneration into the adsorption unit and to discharge used air for regeneration obtained by regenerating the adsorption unit outside of the vehicle, wherein upstream side of the adsorption unit of the regeneration passage and the purification passage is constituted by an internal air introduction pipeline configured to introduce air from the passenger compartment.

2 . The air purification apparatus for a vehicle according to claim 1 , wherein a plurality of adsorption units are provided, and
the internal air introduction pipeline branches into a plurality of parts and are connected to the adsorption units.

3 . The air purification apparatus for a vehicle according to claim 2 , wherein an air introduction fan configured to introduce air in the passenger compartment is disposed in an upstream section of the internal air introduction pipeline.

4 . The air purification apparatus for a vehicle according to claim 2 , wherein an intake distribution mechanism configured to adjust a ratio between air volumes distributed to the respective adsorption units from the internal air introduction pipeline is disposed on a branch-off section of the internal air introduction pipeline.

5 . The air purification apparatus for a vehicle according to claim 2 , wherein an upstream side of the adsorption units next to each other is partitioned into two branch-off passages by a partition wall, and
a heating apparatus configured to heat the air before introduction into the adsorption unit during regeneration of the adsorption unit is installed in each of the branch-off passages.

6 . The air purification apparatus for a vehicle according to claim 2 , wherein the upstream side of the adsorption units next to each other is partitioned into two branch-off passages by the partition wall, and
a cold/heat supply apparatus configured to heat the air in the branch-off passage on one side and cool the air in the branch-off passage on the other side is installed on the partition wall.

7 . The air purification apparatus for a vehicle according to claim 2 , wherein a return pipeline that constitutes a part of the purification passage and a vehicle-outside discharge pipeline that constitutes a part of the regeneration passage are connected to a downstream side of each of the adsorption units, and a flow path switching mechanism configured to selectively connect the downstream side of each of the adsorption units to any one of the return pipeline and the vehicle-outside discharge pipeline is provided.

8 . The air purification apparatus for a vehicle according to claim 7 , wherein the flow path switching mechanism comprises an actuator operated to connect the downstream side of the adsorption unit to the return pipeline during adsorption by the adsorption unit and connect the downstream side of the adsorption unit to the vehicle-outside discharge pipeline during regeneration of the adsorption unit.

9 . The air purification apparatus for a vehicle according to claim 2 , wherein the downstream sides of the adsorption units next to each other are partitioned from each other by the partition wall, and
a heat transfer apparatus configured to transmit heat of air on the downstream side of one of the adsorption units next to each other to air on the downstream side of the other one of the adsorption units next to each other is installed on the partition wall.

10 . The air purification apparatus for a vehicle according to claim 9 , wherein the heat transfer apparatus is configured to transmit heat of used air for regeneration, which has performed regeneration of the adsorption unit and which is before being discharged to the outside of the vehicle, to air which has performed adsorption by the adsorption unit and which is before being returned into the passenger compartment.

Assignees

• Honda Motor Co Ltd

Inventors

• Matsumoto Subaru
• Kakizaki Shinji

Classifications

• Y02C20/40

  of CO2 · CPC title

• B60H3/0633

  with provisions for regenerating or cleaning the filter element · CPC title

• B01D2257/80

  Water · CPC title

• B01D2259/4009

  using hot gas · CPC title

• B01D2259/4566

  for use in transportation means · CPC title