JPWO2023053319A5

JPWO2023053319A5 -

Info

Publication number: JPWO2023053319A5
Application number: JP2023550886A
Authority: JP
Filing date: 2021-09-30
Publication date: 2024-02-19

Description

本開示に係る熱交換器は、第１方向に互いに間隔を空けて配置された複数のフィンと、複数のフィンを貫通し、第１方向と交差する第２方向に互いに間隔を空けて配置された複数の伝熱管とを備え、複数のフィンのそれぞれは、平坦なフィンベース面と、複数のフィン突部とを有し、複数のフィン突部は、複数の伝熱管のそれぞれの周囲を取り囲むように設けられ、フィンベース面から第１方向に突出した内側フィン突部と、内側フィン突部のそれぞれの周囲を取り囲むように設けられ、フィンベース面から内側フィン突部と同じ向きに突出した外側フィン突部とを有し、内側フィン突部と外側フィン突部とは隙間なく隣接している。 A heat exchanger according to the present disclosure includes a plurality of fins arranged at intervals from each other in a first direction, and a plurality of fins passing through the plurality of fins and arranged at intervals from each other in a second direction intersecting the first direction. each of the plurality of fins has a flat fin base surface and a plurality of fin protrusions, and the plurality of fin protrusions surrounds each of the plurality of heat exchanger tubes. an inner fin protrusion protruding from the fin base surface in the first direction ; The inner fin protrusion and the outer fin protrusion are adjacent to each other without a gap .

Claims

a plurality of fins spaced apart from each other in a first direction;
a plurality of heat exchanger tubes passing through the plurality of fins and arranged at intervals in a second direction intersecting the first direction;
Each of the plurality of fins is
A flat fin base surface,
has a plurality of fin protrusions;
The plurality of fin protrusions are
an inner fin protrusion that is provided to surround each of the plurality of heat exchanger tubes and protrudes from the fin base surface in the first direction;
and an outer fin protrusion that is provided to surround each of the inner fin protrusions and protrudes from the fin base surface in the same direction as the inner fin protrusions ,
The inner fin protrusion and the outer fin protrusion are adjacent to each other without a gap.
Heat exchanger.

Each of the plurality of heat exchanger tubes has a circular cross section,
The heat exchanger according to claim 1, wherein the inner fin protrusion and the outer fin protrusion are provided on concentric circles of each of the plurality of heat exchanger tubes.

When the height at which the inner fin protrusion protrudes from the fin base surface is h1, and the height at which the outer fin protrusion protrudes from the fin base surface is h2, the height h1 and the height h2 are: The heat exchanger according to claim 1 or 2, wherein h2≦h1.

The plurality of heat exchanger tubes include a first heat exchanger tube and a second heat exchanger tube that are adjacent to each other in the second direction,
The inner fin protrusion is
a first inner fin protrusion provided so as to surround the first heat exchanger tube;
a second inner fin protrusion provided so as to surround the second heat exchanger tube;
The outer fin protrusion is
a first outer fin protrusion provided to surround the first inner fin protrusion;
a second outer fin protrusion provided to surround the second inner fin protrusion;
The heat exchanger according to any one of claims 1 to 3 , wherein the fin base surface between the first outer fin protrusion and the second outer fin protrusion has a second flat portion.

The plurality of fin protrusions are
an intermediate fin protrusion protruding from the fin base surface in the first direction;
The intermediate fin protrusion is
The heat exchanger according to claim 4 , wherein at least a portion of the intermediate fin protrusion is provided so as to be located between the first outer fin protrusion and the second outer fin protrusion.

In the first direction,
The heat exchanger according to claim 5 , wherein the direction in which the inner fin protrusion protrudes from the fin base surface is opposite to the direction in which the intermediate fin protrusion protrudes from the fin base surface.

According to claim 5 or 6 , the intermediate fin protrusion is provided at a position that does not intersect with a center line passing through the center of the first heat exchanger tube and the center of the second heat exchanger tube along the second direction. Heat exchanger as described.

When the lateral direction of the plurality of fins is a third direction intersecting the first direction and the second direction,
The intermediate fin protrusion is
a first rising portion extending in the second direction and rising from the fin base surface;
a second raised part raised from the fin base surface in parallel with the first raised part;
In the second direction, the length of the first rising portion is longer than the length of the second rising portion,
In the third direction, the distance between the first raised portion and the center line is longer than the distance between the second raised portion and the center line,
In the second direction, the first rising portion
a first end portion adjacent to the first outer fin protrusion;
a second end portion provided adjacent to the second outer fin protrusion;
In the second direction, the second rising portion
a first end portion adjacent to the first outer fin protrusion;
a second end portion provided adjacent to the second outer fin protrusion;
A first imaginary line passing through the first end of the first raised portion and the first end of the second raised portion does not intersect with the first outer fin protrusion,
The heat according to claim 7 , wherein a second virtual line passing through the second end of the first raised portion and the second end of the second raised portion does not intersect with the second outer fin protrusion. exchanger.

A refrigeration cycle device comprising the heat exchanger according to any one of claims 1 to 8 as a condenser or an evaporator.