Heat exchanger for gas appliance and method for manufacturing heat exchanger for gas appliance
US11226134B2 · kind B2 · utility
1Cited by
1References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 24, 2020 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Mar 24, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F2255/08
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A secondary heat exchanger includes a case and a first heat transfer tube portion. The case includes a box body and a first closing member. The box body is provided with a second opening on one side in a third direction. A first assembly in which the first heat transfer tube portion and the first closing member are assembled integrally is mounted to the box body so that a plurality of first heat transfer tubes are is inserted into the box body from the second opening and so that the second opening is closed by the first closing member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.