JPWO2021234961A5

JPWO2021234961A5 -

Info

Publication number: JPWO2021234961A5
Application number: JP2022524849A
Authority: JP
Filing date: 2020-05-22
Publication date: 2022-10-13
Anticipated expiration: 2040-05-22

Description

本開示による熱交換器によれば、間隔を空けて配置された複数の伝熱管を有する第１熱交換体と、前記第１熱交換体の複数の伝熱管の上側又は下側の一端に設けられた第１内側ヘッダと、前記第１熱交換体の通風方向に設けられ、間隔を空けて配置された複数の伝熱管を有する第２熱交換体と、前記第２熱交換体の複数の伝熱管の上側又は下側の一端に設けられた第１外側ヘッダとを含む第１熱交換器と、間隔を空けて配置された複数の伝熱管を有する第３熱交換体と、前記第３熱交換体の複数の伝熱管の上側又は下側の一端に設けられた第２内側ヘッダと、前記第３熱交換体との通風方向に設けられ、間隔を空けて配置された複数の伝熱管を有する第４熱交換体と、前記第４熱交換体の複数の伝熱管の前記第１外側ヘッダと同じ側の上側又は下側の一端に設けられた第２外側ヘッダとを含む第２熱交換器と、前記第１外側ヘッダと前記第２外側ヘッダとを接続し、屈曲部を有する接続配管とを具備し、前記第１内側ヘッダと前記第２内側ヘッダとを接続する配管は設けられておらず、前記第１熱交換器から前記第２熱交換器へ流れる冷媒及び前記第２熱交換器から前記第１熱交換器へ流れる冷媒は、前記接続配管のみを流れる。 According to the heat exchanger according to the present disclosure, a first heat exchange body having a plurality of heat transfer tubes arranged at intervals; a second heat exchange body provided in the airflow direction of the first heat exchange body and having a plurality of spaced apart heat transfer tubes; and a plurality of the second heat exchange body a first heat exchanger including a first outer header provided at one end of the upper or lower side of the heat transfer tubes; a third heat exchange body having a plurality of spaced apart heat transfer tubes; A second inner header provided at one end of the upper side or lower side of the plurality of heat transfer tubes of the heat exchange body, and the plurality of heat transfer tubes arranged at intervals and provided in the ventilation direction of the third heat exchange body. and a second outer header provided at one end of the plurality of heat transfer tubes of the fourth heat exchange body on the same side as the first outer header or on the upper or lower side and a connecting pipe having a bent portion connecting the first outer header and the second outer header, wherein the pipe connecting the first inner header and the second inner header is provided. Refrigerant flowing from the first heat exchanger to the second heat exchanger and refrigerant flowing from the second heat exchanger to the first heat exchanger flow only through the connecting pipe.

Claims

a first heat exchange body having a plurality of spaced apart heat transfer tubes; a first inner header provided at one end of the plurality of heat transfer tubes of the first heat exchange body; 1. A second heat exchange body provided in the airflow direction of the heat exchange body and having a plurality of heat transfer tubes arranged at intervals; a first heat exchanger including a first outer header provided;
a third heat exchange body having a plurality of spaced apart heat transfer tubes; a second inner header provided at one end of the plurality of heat transfer tubes of the third heat exchange body; 3. A fourth heat exchange element provided in a ventilation direction with respect to the heat exchange element and having a plurality of heat transfer tubes arranged at intervals; and the first outer header of the plurality of heat transfer tubes of the fourth heat exchange element. a second heat exchanger comprising a second outer header at one end of the same side, either upper or lower;
a connecting pipe connecting the first outer header and the second outer header and having a bent portion;
No piping is provided to connect the first inner header and the second inner header,
A refrigerant flowing from the first heat exchanger to the second heat exchanger and a refrigerant flowing from the second heat exchanger to the first heat exchanger flow only through the connection pipe,
Heat exchanger.

the first outer header is a double structure pipe having a first inner pipe having a coolant flow hole and a first outer pipe accommodating the first inner pipe,
the second outer header is a double structure pipe having a second inner pipe having a coolant flow hole and a second outer pipe accommodating the second inner pipe,
2. The heat exchanger according to claim 1, wherein said connecting pipe connects said first inner pipe of said first outer header and said second inner pipe of said second outer header.

The second heat exchanger is
provided on the other end side of the plurality of heat transfer tubes of the third heat exchange body and on the other end side of the plurality of heat transfer tubes of the fourth heat exchange body, and between the third heat exchange body and the fourth heat exchange body a common header provided in common,
The common header and the second outer header are provided with partitions for preventing passage of refrigerant,
When the heat exchanger functions as a condenser, the second heat exchange in a downstream region of the common header and the second outer header partitioned by the partition, in which the refrigerant flows upward. The refrigerant flow passage cross-sectional area of the plurality of heat transfer tubes of the second heat exchanger is smaller than the refrigerant flow passage cross-sectional area of the plurality of heat transfer tubes of the second heat exchanger in the upstream region where the refrigerant flows upward.
A heat exchanger according to claim 1 or 2.

The first heat exchanger is
the first outer header is longer than the first inner header;
The connecting pipe is linear,
The heat exchanger according to any one of claims 1-3.

A fan disposed above the first heat exchanger and the second heat exchanger;
the second heat exchange element is located outside the first heat exchange element in plan view when viewed from the fan,
The heat exchanger according to any one of claims 1 to 4, wherein the fourth heat exchange body is positioned outside the third heat exchange body when viewed from the fan in a plan view.

An outdoor unit of an air conditioner comprising the heat exchanger according to any one of claims 1 to 5.

An air conditioner comprising the outdoor unit of an air conditioner according to claim 6.