Air discharge device

Patent metadata

Field	Value
Publication number	US-11945285-B2
Application number	US-202117343118-A
Country	US
Kind code	B2
Filing date	Jun 9, 2021
Priority date	Dec 25, 2018
Publication date	Apr 2, 2024
Grant date	Apr 2, 2024

Abstract

The air discharge device includes a duct defining: a main flow path through which an air flow passes; and a main hole opened in a flat shape to discharge the air flow as a working air flow toward a downstream from the main flow path. A throttle portion is provided in the duct to reduce a flow path height of the main flow path from an upstream of the air flow toward a downstream of the air flow. A plurality of partitions are arranged to divide the main flow path in a major direction into a pair of side flow paths and at least one center flow path. The plurality of partitions are disposed in the duct such that a flow path width of the center flow path is reduced from the upstream of the air flow toward the downstream of the air flow.

First claim

What is claimed is:

1. An air discharge device comprising:
a duct defining a main flow path through which an air flow passes, and a main hole having an opening and configured to discharge the air flow as a working air flow toward a downstream from the main flow path, the opening of the main hole having a flow path height in a minor direction of the opening and a flow path width in a major direction of the opening;
a throttle portion provided in the duct to reduce the flow path height of the main flow path from an upstream of the air flow toward the downstream of the air flow; and
a plurality of partitions arranged to divide the main flow path into a pair of side flow paths located at both sides in the major direction, and at least one center flow path located between the pair of side flow paths, wherein
the plurality of partitions are disposed in the duct, and the flow path width of the center flow path is reduced from the upstream of the air flow toward the downstream of the air flow,
the duct has a duct part made of a double pipe structure including an outer wall portion and an inner wall portion, at a portion connected to the main hole,
the throttle portion is provided in the inner wall portion, and
an upstream end of each of the plurality of partitions is provided at positions separated from the inner wall portion.

2. The air discharge device according to claim 1 , wherein
each of downstream ends of the plurality of partitions at the downstream of the air flow is located upstream of the air flow from an opening of the main hole.

3. The air discharge device according to claim 1 , further comprising an auxiliary outlet arranged at the duct and configured to discharge an auxiliary vortex that has a vortex characteristic including a vortex rotation direction and a vortex axis direction, different from that of a transverse vortex generated downstream from the main hole.

4. The air discharge device according to claim 1 , wherein
a distance between upstream ends of adjacent partitions of the plurality of partitions and a distance between downstream ends of adjacent partitions of the plurality of partitions are unequal.

5. The air discharge device according to claim 1 , wherein
each of the plurality of partitions extend longer than the inner wall portion.

6. The air discharge device according to claim 1 , wherein the duct includes an introduction hole configured to introduce the air flow into the main flow path and each of the plurality of partitions extend from the introduction hole to the main hole.

7. An air discharge device comprising:
a duct defining a main flow path through which an air flow passes, and a main hole having an opening and configured to discharge the air flow as a working air flow toward a downstream from the main flow path;
a throttle portion provided in the duct to reduce the main flow path in a minor direction of the opening from an upstream of the air flow toward the downstream of the air flow; and
a plurality of partitions arranged to divide the main flow path in a major direction of the opening into a pair of side flow paths located at both sides in the major direction and a center flow path located between the pair of side flow paths, wherein
the plurality of partitions are disposed in the duct, and a dimension of the center flow path in the major direction of the opening is reduced from the upstream toward the downstream of the air flow,
the duct has a duct part made of a double pipe structure including an outer wall portion and an inner wall portion, at a portion connected to the main hole,
the throttle portion is provided in the inner wall portion, and
an upstream end of each of the plurality of partitions is provided at positions separated from the inner wall portion.

8. The air discharge device according to claim 7 , wherein
the inner wall portion is provided to define the main flow path and the main hole, and is arranged at an inner side of the outer wall portion to define an auxiliary flow path between the inner wall portion and the outer wall portion, and
the auxiliary flow path is a substantially constant gap between the inner wall portion and the outer wall portion, and a part of the air flow passing through the main flow path flows through the auxiliary flow path in parallel with the air flow passing through the main flow path.

9. The air discharge device according to claim 8 , wherein
the outer wall portion and the inner wall portion are connected by a connecting wall portion arranged to surround the main hole, and
a plurality of auxiliary outlets are provided at least in a part of the connecting wall portion, to discharge an air flow different from the working air flow.

10. The air discharge device according to claim 8 , wherein the inner wall portion is configured to define the throttle portion.

11. The air discharge device according to claim 8 , wherein
the outer wall portion and the inner wall portion are connected by a connecting wall portion arranged at an outer peripheral side surrounding the main hole, and
the connecting wall portion having a plurality of auxiliary outlets formed therein and arranged around the main hole at predetermined spaces.

12. The air discharge device according to claim 11 , wherein
an area of each of the plurality of auxiliary outlets is smaller than an area of the main hole.

13. The air discharge device according to claim 7 , wherein
an auxiliary flow path is formed between the outer wall portion and the inner wall portion and a part of the air flowing through the main flow path flows through the auxiliary flow path in parallel with the air flowing through the main flow path.

14. The air discharge device according to claim 7 , wherein
a distance between upstream ends of adjacent partitions of the plurality of partitions and a distance between downstream ends of adjacent partitions of the plurality of partitions are unequal.

15. The air discharge device according to claim 7 , wherein the duct includes an introduction hole configured to introduce the air flow into the main flow path and each of the plurality of partitions extend from the introduction hole to the main hole.

Assignees

• Denso Corp

Inventors

• Takeuchi Yasuhiro
• Yoshino Etsuro
• Okamura Yuuji
• Yamaoka Jun
• Sakai Masaharu
• Komatsubara Yusuke
• Niimi Yasuhiko
• Yoshida Tatsuya
• Nomoto Hidetaka

Classifications

• B60H1/3457 Primary

  Outlets providing a vortex, i.e. a spirally wound air flow · CPC title

• B60H1/00564

  of air ducts · CPC title

• B60H1/00021 Primary

  Air flow details of HVAC devices · CPC title

• F24F13/06

  Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser · CPC title

• F24F13/072

  of elongated shape, e.g. between ceiling panels · CPC title