Indoor unit of air conditioning device with insulated air passage

Patent metadata

Field	Value
Publication number	US-9976758-B2
Application number	US-201514688285-A
Country	US
Kind code	B2
Filing date	Apr 16, 2015
Priority date	Jul 23, 2014
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

An indoor unit of an air conditioning device which is installed on a wall surface of a room includes an air sending fan which sends room air from an air inlet disposed at an upper part to an air outlet disposed at a lower part of a front side; heat exchangers disposed at the upstream side of the air sending fan; and a back case which is located close to the wall surface with respect to the air sending fan and supports the heat exchangers, wherein the back case is composed of an air outlet passage wall member which forms an air outlet passage for air blown out from the air sending fan and an installation member which is located on a back side of the air outlet passage wall member and is mounted on an installation plate which is fixed on the wall surface with the air outlet passage wall member and the installation member being arranged in parallel in the front and back direction, and a first space is formed between a back surface of an air outlet passage wall of the air outlet passage wall member and the installation member.

First claim

What is claimed is:

1. An indoor unit of an air conditioning device which is to be installed on a wall surface of a room, wherein the indoor unit has a back side, which faces the wall surface in a rearward direction when the indoor unit is installed, and a front side, which is opposite to the back side and which faces away from the wall surface in a frontward direction when the indoor unit is installed, the indoor unit comprising:
an air sending fan which sends room air from an air inlet disposed at an upper part of the indoor unit to an air outlet disposed at a lower part of the front side;
a heat exchanger disposed at a position upstream of the air sending fan; and
a back case which is located between the air-sending fan and the wall surface and rearward of the air outlet when the indoor unit is installed, wherein
the back case supports the heat exchanger,
the back case includes an air outlet passage wall member, which is located on a rearward side of the air sending fan and which forms an air outlet passage for air blown out from the air sending fan, and an installation member, which is located on a rearward side of the air outlet passage wall member and is mounted on an installation plate when the indoor unit is installed,
the installation plate is for fixing the indoor unit on the wall surface,
the air outlet passage wall member and the installation member are arranged in parallel in a front-to-back direction, and
a space is formed between a rearward surface of an air outlet passage wall of the air outlet passage wall member and the installation member.

2. The indoor unit of the air conditioning device of claim 1 , wherein a heat insulation material is disposed in the space.

3. The indoor unit of the air conditioning device of claim 1 , wherein the air outlet passage wall member includes a drain pan section, which has an L-shaped cross-section and is located under the heat exchanger and rearward of the air sending fan, so that droplets of dew condensation water generated on the heat exchanger and dropped therefrom are received in the drain pan section.

4. The indoor unit of the air conditioning device of claim 3 , wherein the space is a first space, and a second space is formed between the drain pan section and the installation member.

5. The indoor unit of the air conditioning device of claim 4 , wherein a heat insulation material is disposed in the second space.

6. The indoor unit of the air conditioning device of claim 2 , wherein the heat insulation material is fixed in contact with the back surface of the air outlet passage wall member, and the installation member is fixed on a rearward side of the heat insulation material.

7. The indoor unit of the air conditioning device of claim 1 , wherein the installation member is longer than the air outlet passage wall member in a vertical direction when the indoor unit is installed, a lower end of the air outlet passage wall member is fixed to a lower end of the installation member, and the installation member is assembled while extending upward from the air outlet passage wall member.

8. The indoor unit of the air conditioning device of claim 1 , wherein a pipe storage section that houses a connection pipe is disposed on a rearward side of the installation member.

9. The indoor unit of the air conditioning device of claim 2 , wherein the air outlet passage wall member includes a drain pan section, which has an L-shaped cross-section and is located under the heat exchanger and on a rearward side of the air sending fan so that droplets of dew condensation water generated on the heat exchanger and dropped therefrom are received in the drain pan section.

10. The indoor unit of the air conditioning device of claim 5 , wherein the heat insulation material is fixed in contact with the back surface of the air outlet passage wall member, and the installation member is fixed on a rearward side of the heat insulation material.

11. The indoor unit of the air conditioning device of claim 2 , wherein the installation member is longer than the air outlet passage wall member in a vertical direction when the indoor unit is installed, a lower end of the air outlet passage wall member is fixed to a lower end of the installation member, and the installation member is assembled while extending upward from the air outlet passage wall member.

12. The indoor unit of the air conditioning device of claim 3 , wherein the installation member is longer than the air outlet passage wall member in a vertical direction when the indoor unit is installed, a lower end of the air outlet passage wall member is fixed to a lower end of the installation member, and the installation member is assembled while extending upward from the air outlet passage wall member.

13. The indoor unit of the air conditioning device of claim 4 , wherein the installation member is longer than the air outlet passage wall member in a vertical direction when the indoor unit is installed, a lower end of the air outlet passage wall member is fixed to a lower end of the installation member, and the installation member is assembled while extending upward from the air outlet passage wall member.

14. The indoor unit of the air conditioning device of claim 5 , wherein the installation member is longer than the air outlet passage wall member in a vertical direction when the indoor unit is installed, a lower end of the air outlet passage wall member is fixed to a lower end of the installation member, and the installation member is assembled while extending upward from the air outlet passage wall member.

15. The indoor unit of the air conditioning device of claim 6 , wherein the installation member is longer than the air outlet passage wall member in a vertical direction when the indoor unit is installed, a lower end of the air outlet passage wall member is fixed to a lower end of the installation member, and the installation member is assembled while extending upward from the air outlet passage wall member.

16. The indoor unit of the air conditioning device of claim 9 , wherein the installation member is longer than the air outlet passage wall member in a vertical direction when the indoor unit is installed, a lower end of the air outlet passage wall member is fixed to a lower end of the installation member, and the installation member is assembled while extending upward from the air outlet passage wall member.

17. The indoor unit of the air conditioning device of claim 10 , wherein the installation member is longer than the air outlet passage wall member in a vertical direction when the indoor unit is installed, a lower end of the air outlet passage wall member is fixed to a lower end of the installation member, and the installation member is assembled while extending upward from the air outlet passage wall member.

18. The indoor unit of the air conditioning device of claim 2 , wherein a pipe storage section that houses a connection pipe is disposed on a rearward side of the installation member.

Assignees

• Mitsubishi Electric Corp

Inventors

• Suzuki Akimoto
• Ishikawa Masato
• Kinami Masahide
• Ikeda Hisanori
• Koyanagi Youhei
• Goto Takuya
• Kawai Shinji
• Ishigami katsuya
• Naito Yosuke

Classifications

• F24F13/32

  Supports for air-conditioning, air-humidification or ventilation units · CPC title

• F24F13/20

  Casings or covers · CPC title

• F24F1/0057

  mounted in or on a wall · CPC title

• F24F1/0018 Primary

  characterised by fans (with secondary air induced by injector action of the primary air F24F1/01) · CPC title

• F24F1/0007

  Indoor units, e.g. fan coil units (self-contained units F24F1/02) · CPC title