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US 12,583,042 B2Granted
Heat exchanger, heat pump device, and method of manufacturing heat exchanger
AssigneeDaikin Industries, Ltd.
InventorsKouju Yamada, Tomoki Hirokawa
Life of this patent
Estimating the term…
Abstract
A heat exchanger includes: a header; and heat transfer tubes connected to the header. The header includes a first member, a second member, and a third member. A brazing layer between the second member and the third member has a melt rate, at predetermined temperature, that is larger than a melt rate, at the predetermined temperature, of at least one of: a brazing layer between the first member and the second member; and a brazing layer between the first member and the third member.
Claims9
A heat exchanger comprising:
- a header comprising:
- a first member that includes a second brazing layer disposed on an inner surface of the first member;
- a second member;
- and
- a third member that includes a first brazing layer, wherein
- the first brazing layer of the third member is adjacent to the second member,
- the second brazing layer includes:
- a first portion of the second brazing layer is adjacent to the second member;
- and
- a second portion of the second brazing layer is adjacent to the third member;
- and
- heat transfer tubes connected to the header, wherein
- at a predetermined temperature with in a range of 580° C. or more and 660° C. or less, a melt rate of the first brazing layer is larger than a melt rate of the second brazing layer,
- in a view along a longitudinal axis of the header:
- the second member and third member are disposed within a perimeter defined by the first member, and
- the first brazing layer is entirely disposed within a perimeter defined by the first portion and the second portion of the second brazing layer on the inner surface of the first member,
- the second member includes:
- a first protrusion protruding from a first wall toward a second wall;
- and
- a second protrusion protruding from the second wall toward the first wall,
- a first edge of the first wall is disposed closer to the heat transfer tubes than the first protrusion,
- a second edge of the second wall is disposed closer to the heat transfer tubes than the second protrusion.
19 more elements
A heat exchanger comprising:
- a header comprising:
- a first member that includes a second brazing layer disposed on an inner surface of the first member;
- a second member;
- and
- a third member that includes a first brazing layer, wherein
- the first brazing layer of the third member is adjacent to the second member,
- the second brazing layer includes:
- a first portion of the second brazing layer is adjacent to the second member;
- and
- a second portion of the second brazing layer is adjacent to the third member;
- and
- heat transfer tubes connected to the header, wherein
- at a predetermined temperature with in a range of 580° C. or more and 660° C. or less, a melt rate of the first brazing layer is larger than a melt rate of the second brazing layer,
- in a view along a longitudinal axis of the header:
- the second member and third member are disposed within a perimeter defined by the first member, and
- the first brazing layer is entirely disposed within a perimeter defined by the first portion and the second portion of the second brazing layer on the inner surface of the first member,
- the second member includes:
- a coupling portion having one end portion and an other end portion in the view along the longitudinal axis of the header,
- a first wall extending from the one end portion of the coupling portion toward an extending direction of the heat transfer tubes;
- and
- a second wall extending from the other end portion of the coupling portion toward the extending direction of the heat transfer tubes, and
- in the view along the longitudinal axis of the header, a longitudinal direction of the coupling portion is perpendicular to both a longitudinal direction of the first wall and a longitudinal direction of the second wall.
19 more elements
Dependencies are inferred from the claim text.