Air conditioning indoor unit and air conditioner

Patent metadata

Field	Value
Publication number	US-12405013-B2
Application number	US-202217736334-A
Country	US
Kind code	B2
Filing date	May 4, 2022
Priority date	Nov 5, 2019
Publication date	Sep 2, 2025
Grant date	Sep 2, 2025

Abstract

An air conditioning indoor unit that blows air, which has exchanged heat with a refrigerant flowing through a heat exchanger, into an air conditioning target space, includes: a liquid refrigerant pipe and a gas refrigerant pipe that are connected to the heat exchanger; a casing that accommodates the heat exchanger and that has an opening communicating with the air conditioning target space; a first shutoff valve in the liquid refrigerant pipe; a second shutoff valve in the gas refrigerant pipe; and a partition wall that separates a first space from a second space in the casing. The first shutoff valve and the second shutoff valve are in the first space. The second space communicates with the air conditioning target space via the opening.

First claim

What is claimed is:

1. An air conditioning indoor unit that blows air, which has exchanged heat with a refrigerant flowing through a heat exchanger, into an air conditioning target space, the air conditioning indoor unit comprising:
a liquid refrigerant pipe and a gas refrigerant pipe that are connected to the heat exchanger;
a casing that accommodates the heat exchanger and that has an opening communicating with the air conditioning target space;
a first shutoff valve in the liquid refrigerant pipe;
a second shutoff valve in the gas refrigerant pipe; and
a partition wall that extends from a bottom plate of the casing to a top panel of the casing and divides a space inside the casing into a first space and a second space, wherein
the first shutoff valve and the second shutoff valve are in the first space, and
the second space communicates with the air conditioning target space via the opening.

2. The air conditioning indoor unit according to claim 1 , wherein the air conditioning indoor unit is a ceiling-mounted type.

3. The air conditioning indoor unit according to claim 2 , wherein the air conditioning indoor unit is a ceiling-embedded type.

4. The air conditioning indoor unit according to claim 2 , wherein the first space communicates with an attic space.

5. An air conditioner comprising the air conditioning indoor unit according to claim 1 .

6. An air conditioner comprising:
an air conditioning indoor unit in an air conditioning target space;
an air conditioning heat source unit connected to the air conditioning indoor unit via a liquid refrigerant pipe and a gas refrigerant pipe; and
a shutoff valve device comprising a shutoff valve group disposed in an attic space above a ceiling of the air conditioning target space, wherein
the shutoff valve group comprises:
a first shutoff valve in the liquid refrigerant pipe; and
a second shutoff valve in the gas refrigerant pipe,

the shutoff valve device further comprises a casing that accommodates the shutoff valve group,
the casing has an opening through which the liquid refrigerant pipe and the gas refrigerant pipe extend, and
the shutoff valve device further comprises a heat insulating material that closes only a gap between the opening and the liquid refrigerant pipe and a gap between the opening and the gas refrigerant pipe.

7. The air conditioner according to claim 6 , wherein the air conditioning indoor unit is a wall-mounted type.

8. The air conditioner according to claim 6 , wherein the air conditioning indoor unit is a floor type.

9. The air conditioner according to claim 6 , wherein the air conditioning indoor unit is a ceiling suspended type.

10. The air conditioner according to claim 6 , wherein
the shutoff valve device further comprises an electric component box that accommodates electric components that operates the shutoff valve group, and
the electric component box is disposed outside the casing.

11. An air conditioner comprising:
a floor-type air conditioning indoor unit in an air conditioning target space;
an air conditioning heat source unit connected to the floor-type air conditioning indoor unit via a liquid refrigerant pipe and a gas refrigerant pipe; and
a shutoff valve device comprising a shutoff valve group disposed in an underfloor space that is between a floor of the air conditioning target space and a ceiling of a floor immediately below the floor of the air conditioning target space, wherein

the shutoff valve group comprises one or both of:
a first shutoff valve in the liquid refrigerant pipe; and
a second shutoff valve in the gas refrigerant pipe.

Assignees

• Daikin Ind Ltd

Inventors

• Minami Junya

Classifications

• F25B2600/2519

  On-off valves · CPC title

• F25B2313/0233

  in parallel arrangements · CPC title

• F25B49/02

  for compression type machines, plants or systems · CPC title

• F25B41/24

  Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part · CPC title

• F24F1/005

  mounted on the floor; standing on the floor · CPC title