Air conditioner

Patent metadata

Field	Value
Publication number	US-11965682-B2
Application number	US-202217574194-A
Country	US
Kind code	B2
Filing date	Jan 12, 2022
Priority date	Dec 16, 2020
Publication date	Apr 23, 2024
Grant date	Apr 23, 2024

Abstract

An air conditioner includes an outdoor unit including a compressor, first and second indoor heat exchangers to receive a refrigerant from the outdoor unit, the second indoor heat exchanger receiving the refrigerant independently of the first indoor heat exchanger, and a fan disposed between the first and second indoor heat exchangers. First and second refrigerant pipes form flow paths between the outdoor unit and the first and second indoor heat exchangers. First and second expansion valves are disposed on the first and second refrigerant pipes. Third and fourth refrigerant pipes form flow paths between the compressor and the first and second indoor heat exchangers. A first opening and closing valve selectively opens and closes a fifth refrigerant pipe to selectively allow refrigerant to flow between the second and third refrigerant pipes. Second and third opening and closing valves selectively open and close the second and third refrigerant pipes.

First claim

What is claimed is:

1. An air conditioner, comprising:
an outdoor unit including a compressor and an outdoor heat exchanger connected to the compressor;
a first indoor heat exchanger configured to receive a refrigerant from the outdoor unit;
a first refrigerant pipe to form at least a portion of a first flow path between a first end of the first indoor heat exchanger and the outdoor unit;
a second indoor heat exchanger configured to receive a refrigerant from the outdoor unit, independently of the first indoor heat exchanger;
a second refrigerant pipe to form at least a portion of a second flow path between a first end of the second indoor heat exchanger and the outdoor unit;
a fan disposed between the first indoor heat exchanger and the second indoor heat exchanger;
a first expansion valve disposed on the first refrigerant pipe;
a second expansion valve disposed on the second refrigerant pipe;
a third refrigerant pipe to form at least a portion of a third flow path between the compressor and a second end of the first indoor heat exchanger;
a fourth refrigerant pipe provided to form at least a portion of a fourth flow path between the compressor and a second end of the second indoor heat exchanger;
a fifth refrigerant pipe;
a first opening and closing valve configured to selectively open and close the fifth refrigerant pipe so as to selectively allow refrigerant to flow between the second refrigerant pipe and the third refrigerant pipe via the fifth refrigerant pipe;
a second opening and closing valve configured to selectively open and close the second refrigerant pipe; and
a third opening and closing valve configured to selectively open and close the third refrigerant pipe.

2. The air conditioner of claim 1 , wherein
the second refrigerant pipe includes a first end branching from the first refrigerant pipe, and a second end connected to the second heat exchanger, and the fifth refrigerant pipe branches from the second refrigerant pipe at a first connection point of the second refrigerant pipe,
the second opening and closing valve is disposed between the first end of the second refrigerant pipe and the first connection point of the second refrigerant pipe, and
the second expansion valve is disposed between the first connection point of the second refrigerant pipe and the second end of the second refrigerant pipe.

3. The air conditioner of claim 2 , wherein
the fifth refrigerant pipe branches from the third refrigerant pipe at a second connection point of the third refrigerant pipe, and
the second connection point is disposed closer to the first indoor heat exchanger than the third opening and closing valve on the third flow path between the compressor and the second end of the first indoor heat exchanger.

4. The air conditioner of claim 3 , wherein
in response to the first opening and closing valve being closed, the second opening and closing valve and the third opening and closing valve are opened.

5. The air conditioner of claim 4 , wherein
in response to a refrigerant flowing from the compressor to the third refrigerant pipe and the fourth refrigerant pipe, the first indoor heat exchanger and the second indoor heat exchanger are connected in parallel to the compressor.

6. The air conditioner of claim 4 , wherein
in response to a refrigerant flowing from the outdoor heat exchanger to the first refrigerant pipe and the second refrigerant pipe, the first indoor heat exchanger and the second indoor heat exchanger are connected in parallel to the outdoor heat exchanger.

7. The air conditioner of claim 4 , further comprising:
a housing configured to cover the first indoor heat exchanger, the second indoor heat exchanger, and the fan,
wherein
the housing includes:
an inlet,
a first outlet disposed adjacent to the first indoor heat exchanger,
a second outlet disposed adjacent to the second indoor heat exchanger,
a first blade configured to open and close the first outlet, and
a second blade configured to open and close the second outlet, and

in response to the first opening and closing valve being closed, at least one of the first blade and the second blade is opened.

8. The air conditioner of claim 3 , wherein
in response to the first opening and closing valve being opened, the second opening and closing valve and the third opening and closing valve are closed.

9. The air conditioner of claim 8 , wherein
in response to a refrigerant flowing from the compressor to the first refrigerant pipe and the second refrigerant pipe, a refrigerant introduced into the second indoor heat exchanger is supplied to the second indoor heat exchanger via the fifth refrigerant pipe and the second refrigerant pipe.

10. The air conditioner of claim 9 , wherein
in response to the refrigerant flowing from the compressor to the first refrigerant pipe and the second refrigerant pipe, the first indoor heat exchanger and the second indoor heat exchanger are connected in series with the compressor.

11. The air conditioner of claim 8 , further comprising:
a housing configured to cover the first indoor heat exchanger, the second indoor heat exchanger, and the fan,
wherein
the housing includes:
an inlet,
a first outlet disposed adjacent to the first indoor heat exchanger,
a second outlet disposed adjacent to the second indoor heat exchanger,
a first blade configured to open and close the first outlet, and
a second blade configured to open and close the second outlet, and

in response to the first opening and closing valve being opened, one of the first blade and the second blade is selectively opened.

12. The air conditioner of claim 1 , further comprising:
a housing configured to cover the first indoor heat exchanger, the second indoor heat exchanger, and the fan, wherein the housing includes:
an inlet,
a first outlet disposed adjacent to the first indoor heat exchanger,
a second outlet disposed adjacent to the second indoor heat exchanger,
a first blade configured to open and close the first outlet, and
a second blade configured to open and close the second outlet.

13. The air conditioner of claim 1 , wherein
the fan is disposed between the first indoor heat exchanger and the second heat exchanger in a horizontal direction.

14. The air conditioner of claim 13 , wherein
the fan is a centrifugal fan including a rotating shaft formed in a vertical direction.

15. The air conditioner of claim 1 , wherein
the fan includes a plurality of fans,
the first indoor heat exchanger is elongated along in a first direction, and
the plurality of fans are spaced apart from each other in the first direction.

16. The air conditioner of claim 1 , further comprising a controller to control the first opening and closing valve, the second opening and closing valve, and the third opening and closing valve,
wherein
when the air conditioner is operated in a first mode, the controller is configured to close the first opening and closing valve and to open the second opening and closing valve and the third opening and closing valve, and
when the air conditioner is operated in a second mode, the controller is configured to open the first opening and closing valve and to close the second opening and closing valve and the third opening and closing valve.

17. The air conditioner of claim 16 , wherein when the air conditioner is operated in the second mode and the controller opens the first opening and closing valve, the second refrigerant pipe is connected to the third refrigerant pipe via the fifth refrigerant pipe, and the first indoor heat

Assignees

• Samsung Electronics Co Ltd

Inventors

• Ha Dongsu
• Kim Donghyun
• Kim Hyundal
• Hong Jinwoo

Classifications

• F25B41/325 Primary

  having two or more valve members · CPC title

• F25B5/02

  arranged in parallel · CPC title

• F25B13/00 Primary

  Compression machines, plants or systems, with reversible cycle (defrosting cycles F25B47/02) · CPC title

• F25B41/20

  Disposition of valves, e.g. of on-off valves or flow control valves (expansion valves F25B41/31) · CPC title

• F25B2313/02331

  during cooling · CPC title