HVAC case

Patent metadata

Field	Value
Publication number	US-11577696-B2
Application number	US-202016814188-A
Country	US
Kind code	B2
Filing date	Mar 10, 2020
Priority date	Mar 26, 2019
Publication date	Feb 14, 2023
Grant date	Feb 14, 2023

Abstract

An HVAC case configured to heat airflow for a vehicle HVAC system. The HVAC case has a defrost outlet, a primary demist outlet, a secondary demist outlet, and an airflow control door. The airflow control door is configured to control airflow through each one of the defrost outlet, the primary demist outlet, and the secondary demist outlet.

First claim

What is claimed is:

1. An HVAC case configured to heat airflow for a vehicle HVAC system, the HVAC case comprising:
a defrost outlet;
a primary demist outlet;
a secondary demist outlet; and
an airflow control door configured to control airflow through each one of the defrost outlet, the primary demist outlet, and the secondary demist outlet;
wherein:
the primary demist outlet is between the defrost outlet and the secondary demist outlet; and
each of the defrost outlet, the primary demist outlet, and the secondary demist outlet span a width of the HVAC case and overlap along a depth of the HVAC case, the width is perpendicular to, and longer than, the depth.

2. The HVAC case of claim 1 , wherein the primary demist outlet is larger than the secondary demist outlet.

3. The HVAC case of claim 1 , wherein the HVAC case includes a housing defining the defrost outlet, the primary demist outlet, and the secondary demist outlet.

4. The HVAC case of claim 1 , wherein the airflow control door is rotatable about a rotation axis.

5. The HVAC case of claim 1 , wherein the airflow control door is movable to a first position in which the airflow control door permits airflow out of each one of the defrost outlet, the primary demist outlet, and the secondary demist outlet.

6. The HVAC case of claim 1 , wherein the airflow control door is movable to a second position in which the airflow control door closes the defrost outlet, closes the primary demist outlet, and permits airflow out of the secondary demist outlet.

7. The HVAC case of claim 1 , wherein the airflow control door is movable to a third position in which the airflow control door closes each one of the defrost outlet, the primary demist outlet, and the secondary demist outlet.

8. The HVAC case of claim 7 , wherein in the third position the airflow control door seals against opposing surfaces of the HVAC case.

9. An HVAC case configured to heat airflow for a vehicle HVAC system, the HVAC case comprising:
a defrost outlet;
a primary demist outlet;
a secondary demist outlet; and
an airflow control door configured to be rotated to each one of the following:
a defrost mode position in which the airflow control door permits airflow out of the HVAC case through each one of the defrost outlet, the primary demist outlet, and the secondary demist outlet;
a foot mode position in which the airflow control door limits airflow from exiting the HVAC case through the defrost outlet and the primary demist outlet, and permits airflow out of the HVAC case through the secondary demist outlet; and
a face mode position in which the airflow control door blocks airflow from exiting the HVAC case through the defrost outlet, the primary demist outlet, and the secondary demist outlet

wherein:
the primary demist outlet is between the defrost outlet and the secondary demist outlet; and
each of the defrost outlet, the primary demist outlet, and the secondary demist outlet span a width of the HVAC case and overlap along a depth of the HVAC case, the width is perpendicular to, and longer than, the depth.

10. The HVAC case of claim 9 , wherein the primary demist outlet is larger than the secondary demist outlet.

11. The HVAC case of claim 10 , wherein the HVAC case includes a housing defining the defrost outlet, the primary demist outlet, and the secondary demist outlet.

12. The HVAC case of claim 11 , wherein the housing includes an L-shaped divider dividing the primary demist outlet from the secondary demist outlet.

13. The HVAC case of claim 9 , wherein the airflow control door is rotatable about a rotation axis.

14. The HVAC case of claim 9 , wherein the defrost outlet is larger than each one of the primary demist outlet and the secondary demist outlet.

15. The HVAC case of claim 14 , wherein the defrost outlet is larger than the primary demist outlet and the secondary demist outlet combined.

16. The HVAC case of claim 9 , wherein the HVAC case includes a heater core configured to heat airflow that exits the HVAC case through one or more of the defrost outlet, the primary demist outlet, and the secondary demist outlet.

17. The HVAC case of claim 9 , wherein the HVAC case further includes a face outlet and a foot outlet.

18. The HVAC case of claim 17 , further comprising a rear airflow outlet.

Assignees

• Denso Int America Inc

Inventors

• Belanger Brian
• Stabile Kyle
• Spunar Nicholaus
• Zhang Li

Classifications

• B60S1/54

  using gas, e.g. hot air · CPC title

• B60H1/00671 Primary

  Damper doors moved by rotation; Grilles · CPC title

• B60H1/3407

  providing an air stream in a fixed direction, e.g. using a grid or porous panel · CPC title

• B60H2001/00721

  Air deflecting or air directing means · CPC title

• B60S1/023 Primary

  including defroster or demisting means · CPC title