JPWO2020245982A5

JPWO2020245982A5 -

Info

Publication number: JPWO2020245982A5
Application number: JP2021524602A
Authority: JP
Filing date: 2019-06-06
Publication date: 2022-02-02
Anticipated expiration: 2039-06-06

Description

本発明に係る熱交換器は、管軸が上下方向に延び、水平方向に並んで配置された複数の伝熱管と、前記複数の伝熱管の上側端部同士を接続する上側ヘッダと、を備え、前記上側ヘッダは、内部を前記複数の伝熱管の前記上側端部が挿入されている挿入空間と前記挿入空間の上側に位置する上側空間とに仕切る仕切部材を備え、前記仕切部材は、前記挿入空間と前記上側空間との間を連通する連通孔を備え、前記連通孔は、前記管軸に沿った方向の視点において前記複数の伝熱管の間に位置し、当該連通孔を通過して前記挿入空間に流入する冷媒の流速を増加させるものである。 The heat exchanger according to the present invention includes a plurality of heat transfer tubes having a tube axis extending in the vertical direction and arranged side by side in the horizontal direction, and an upper header for connecting the upper end portions of the plurality of heat transfer tubes. The upper header includes a partition member that partitions the inside into an insertion space into which the upper end of the plurality of heat transfer tubes is inserted and an upper space located above the insertion space, and the partition member is the partition member. A communication hole for communicating between the insertion space and the upper space is provided , and the communication hole is located between the plurality of heat transfer tubes in a viewpoint in a direction along the tube axis and passes through the communication hole. It increases the flow velocity of the refrigerant flowing into the insertion space .

Claims

Multiple heat transfer tubes with tube axes extending in the vertical direction and arranged side by side in the horizontal direction,
It comprises an upper header that connects the upper ends of the plurality of heat transfer tubes to each other.
The upper header is
A partition member is provided which partitions the inside into an insertion space into which the upper end of the plurality of heat transfer tubes is inserted and an upper space located above the insertion space.
The partition member is
A communication hole for communicating between the insertion space and the upper space is provided .
The communication hole is
Located between the plurality of heat transfer tubes in the viewpoint in the direction along the tube axis,
A heat exchanger that increases the flow velocity of the refrigerant that passes through the communication hole and flows into the insertion space .

The partition member is
The heat exchanger according to claim 1, wherein the upper surface on the upper space side is provided with an inclined surface that inclines in the direction of gravity toward the communication hole.

The partition member is
The heat exchanger according to claim 1 or 2, wherein a protrusion is provided on the lower surface on the insertion space side.

The communication hole is
The heat exchanger according to any one of claims 1 to 3, which is located across the plurality of heat transfer tubes from a viewpoint in a direction along the tube axis.

The length of the communication hole is
The heat exchanger according to claim 4 , which is longer than the distance between adjacent communication holes.

The plurality of heat transfer tubes are
The first heat transfer tube group located on the upstream side of the air flow flowing into the plurality of heat transfer tubes, and
With a second heat transfer tube group located on the downstream side,
The upper header is
The insertion space is divided into a first insertion space into which the upper end of the first heat transfer tube group is inserted and a second insertion space into which the upper end of the second heat transfer tube group is inserted. With a part
Each of the first heat transfer tube group and the second heat transfer tube group
The lower ends of the plurality of heat transfer tubes are connected to each other by a lower header.
The lower header
The heat exchanger according to any one of claims 1 to 5 , further comprising an outflow port for the refrigerant.

A refrigeration cycle apparatus comprising a refrigerant circuit having at least a compressor, a condenser, an expander and an evaporator, and equipped with the heat exchanger according to any one of claims 1 to 6 as the condenser or the evaporator. ..