Heat exchanger and combustion device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 30, 2019
Grant Date -
Apr 19, 2018
app pub date -
Sep 28, 2017
filing date -
Oct 14, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A heat exchanger including a heat transfer fin (1) having a heat-transfer-tube insertion hole (10) through which a heat transfer tube (40) is inserted, and a brazing material holding portion (100) provided above the heat-transfer-tube insertion hole (10) to hold a brazing material (4), wherein when the heat transfer tube (40) is inserted through the heat-transfer-tube insertion hole (10), left and right non-contact portions (15), (16) where a circumferential edge of the heat-transfer-tube insertion hole (10) and an outer circumferential surface of the heat transfer tube (40) are not in contact with each other are separately formed on an upper circumferential edge of the heat-transfer-tube insertion hole (10), and a brazing material guiding portion (100) extending toward the outer circumferential surface of the heat transfer tube (40) is formed between the left and right non-contact portions (15), (16).
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully