Expansion tank

Patent metadata

Field	Value
Publication number	US-11225901-B2
Application number	US-202117212177-A
Country	US
Kind code	B2
Filing date	Mar 25, 2021
Priority date	Mar 30, 2020
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

Abstract

An expansion tank, includes: a tank main body defining a storage chamber storing a coolant liquid therein; multiple partition walls provided in the tank main body to divide the storage chamber into multiple division chambers including an inlet chamber and an outlet chamber, the partition walls being formed with communication holes for bringing adjacent ones of the division chambers into communication with each other; a coolant liquid inlet portion that is provided on the tank main body and is open to the inlet chamber; a coolant liquid outlet portion that has an outlet opening in a depression formed in a bottom of the tank main body and is open to the outlet chamber; and a barrier wall extending from a side wall of the tank main body or one of the partition walls into the depression.

First claim

The invention claimed is:

1. An expansion tank, comprising:
a tank main body defining a storage chamber storing a coolant liquid therein;
multiple partition walls provided in the tank main body to divide the storage chamber into multiple division chambers including an inlet chamber and an outlet chamber, the partition walls being formed with communication holes for bringing adjacent ones of the division chambers into communication with each other;
a coolant liquid inlet portion that is provided on the tank main body and is open to the inlet chamber;
a coolant liquid outlet portion that has an outlet opening in a depression formed in a bottom of the tank main body and is open to the outlet chamber; and
a barrier wall extending from a side wall of the tank main body or one of the partition walls into the depression,
wherein the communication holes that are open to the outlet chamber include those positioned on either side of the barrier wall.

2. The expansion tank according to claim 1 , wherein the barrier wall extends in a direction crossing the outlet opening.

3. The expansion tank according to claim 1 , wherein the outlet chamber is in communication with at least two division chambers adjacent thereto via the communication holes formed in the partition walls separating the at least two division chambers from the outlet chamber.

4. The expansion tank according to claim 1 , wherein the barrier wall extends to at least a height substantially corresponding to a lowest liquid level of the coolant liquid stored in the storage chamber.

5. An expansion tank, comprising:
a tank main body defining a storage chamber storing a coolant liquid therein;
multiple partition walls provided in the tank main body to divide the storage chamber into multiple division chambers including an inlet chamber and an outlet chamber, the partition walls being formed with communication holes for bringing adjacent ones of the division chambers into communication with each other;
a coolant liquid inlet portion that is provided on the tank main body and is open to the inlet chamber;
a coolant liquid outlet portion that has an outlet opening in a depression formed in a bottom of the tank main body and is open to the outlet chamber; and
a barrier wall extending from a side wall of the tank main body or one of the partition walls into the depression,
wherein the depression is defined by a portion of a bottom wall of the tank main body slanting downward toward a central part of the depression, and
the coolant liquid outlet portion includes a coolant liquid outlet tube extending out from the outlet opening to outside of the tank main body along a slant direction of the portion of the bottom wall.

6. The expansion tank according to claim 5 , wherein the barrier wall extends in a direction crossing the outlet opening.

7. The expansion tank according to claim 5 , wherein the outlet chamber is in communication with at least two division chambers adjacent thereto via the communication holes formed in the partition walls separating the at least two division chambers from the outlet chamber.

8. The expansion tank according to claim 5 , wherein the barrier wall extends to at least a height substantially corresponding to a lowest liquid level of the coolant liquid stored in the storage chamber.

Assignees

• Honda Motor Co Ltd

Inventors

• Komatsu Shuji
• Hotta Naoki
• Koide Keijiro
• Shimoyama Shinji
• Fukuzawa Ichiro
• Fukada Yusuke

Classifications

• F01P11/04

  Arrangements of liquid pipes or hoses · CPC title

• F01P11/029 Primary

  Expansion reservoirs · CPC title

• F01P11/00

  Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00 · CPC title

• F01P11/02

  Liquid-coolant {filling}, overflow, venting, or draining devices (automatic draining during freezing conditions F01P11/20) · CPC title