Air-conditioning device

Patent metadata

Field	Value
Publication number	US-10088176-B2
Application number	US-201415504839-A
Country	US
Kind code	B2
Filing date	Oct 30, 2014
Priority date	Oct 30, 2014
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

In an air-conditioning device, back flow is less likely to occur at an outlet port in relation to an inlet resistance, and the air-conditioning device includes: a main body having an inlet port and an outlet port; a cross-flow fan provided inside the main body; and a heat exchanger provided inside the main body, wherein the main body includes at least a front surface, a rear surface, an upper surface and a lower surface, the inlet port is formed in the upper surface, a ratio H/Df between the main body height dimension H and the fan outer diameter Df is 2.2 to 2.7, and an angle of inclination β between a rear part of an front upward inclination section of the heat exchanger and a vertical direction is 30° to 45°.

First claim

The invention claimed is:

1. An air-conditioning device, comprising:
a main body having an inlet port and an outlet port;
a cross-flow fan provided inside the main body; and
a heat exchanger provided inside the main body,

wherein
the main body includes a front surface, a rear surface, an upper surface and a lower surface,
the inlet port is formed in the upper surface,
a ratio H/Df between a height dimension H of the main body and an outer diameter Df of the fan is 2.2 to 2.7,
an angle of inclination β between a rear part of a front upward inclination section of the heat exchanger, and a vertical direction, is 30° to 45°, and
when the height difference between the upper end of the heat exchanger front part and the outer circumference end of the fan is the minimum height H 1 , then a ratio H 1 /Df between the minimum height H 1 and the fan outer circumference Df is 0.5 to 0.7.

2. The air-conditioning device according to claim 1 , wherein
an upstream side of the outlet port is an outlet-side flow channel;
the rear surface side of the outlet-side flow channel is demarcated by a guide wall;
an upper end of a heat exchanger front part of the heat exchanger is arranged at a position further toward a front side than the rotation centre O of the fan; and
when a height difference between the upper end of the heat exchanger front part and an outer circumference end of the fan is a minimum height H 1 , and a front/rear distance from the upper end of the heat exchanger front part to a start end of the guide wall is a front/rear distance Dg, then a ratio H 1 /Dg between the minimum height H 1 and the front/rear distance Dg is 1.1 to 1.4.

3. The air-conditioning device according to claim 1 , wherein
an upstream side of the outlet port is an outlet-side flow channel,
the rear surface side of the outlet-side flow channel is demarcated by the guide wall,
a front end section of a stabilizer which demarcates an inlet-side flow channel and the outlet-side flow channel is a tongue section,
when a position where a distance between the cross-flow fan and the tongue section is smallest, viewed from a lateral side, is a minimum gap position of the tongue section, a virtual straight line linking the minimum gap position and the rotation centre O of the fan is a straight line X 1 , a virtual straight line linking the rotation centre O of the fan and the start end of the guide wall is a straight line X 2 , and an angle occurring in the inlet-side flow channel, of an angle formed between the straight line X 1 and the straight line X 2 , is a fan inlet angle γ, then the fan inlet angle γ is 150° to 180°,
the front surface side of the outlet-side flow channel is demarcated by a diffuser, and
the diffuser has a portion which separates from an upstream section virtual straight line S 1 , which is a direction of extension of an upstream section of the diffuser, towards a downstream side of the diffuser, in lateral side view.

4. The air-conditioning device according to claim 1 , wherein
the upstream side of the outlet port is an outlet-side flow channel,
the front surface side of the outlet-side flow channel is demarcated by the diffuser; and
when a direction of extension of a linear portion of the upstream section of the diffuser, in lateral side view, is an upstream section virtual straight line S 1 , and a direction of extension of a linear portion of a downstream section of the diffuser is a downstream section virtual straight line S 2 , then an angle α formed by the upstream section virtual straight line S 1 and the downstream section virtual straight line S 2 is 5° to 40°.

5. An air-conditioning device, comprising:
a main body having an inlet port and an outlet port;
a cross-flow fan provided inside the main body; and
a heat exchanger provided inside the main body,

wherein
the main body includes a front surface, a rear surface, an upper surface and a lower surface,
the inlet port is formed in the upper surface,
a ratio H/Df between a height dimension H of the main body and an outer diameter Df of the fan is 2.2 to 2.7,

an angle of inclination β between a rear part of a front upward inclination section of the heat exchanger, and a vertical direction, is 30° to 45°,
an upstream side of the outlet port is an outlet-side flow channel;
the rear surface side of the outlet-side flow channel is demarcated by a guide wall;
an upper end of a heat exchanger front part of the heat exchanger is arranged at a position further toward a front side than the rotation centre O of the fan; and
when a height difference between the upper end of the heat exchanger front part and an outer circumference end of the fan is a minimum height H 1 , and a front/rear distance from the upper end of the heat exchanger front part to a start end of the guide wall is a front/rear distance Dg, then a ratio H 1 /Dg between the minimum height H 1 and the front/rear distance Dg is 1.1 to 1.4.

6. The air-conditioning device according to claim 5 , wherein
an upstream side of the outlet port is an outlet-side flow channel,
the rear surface side of the outlet-side flow channel is demarcated by the guide wall,
a front end section of a stabilizer which demarcates an inlet-side flow channel and the outlet-side flow channel is a tongue section,
when a position where a distance between the cross-flow fan and the tongue section is smallest, viewed from a lateral side, is a minimum gap position of the tongue section, a virtual straight line linking the minimum gap position and the rotation centre O of the fan is a straight line X 1 , a virtual straight line linking the rotation centre O of the fan and the start end of the guide wall is a straight line X 2 , and an angle occurring in the inlet-side flow channel, of an angle formed between the straight line X 1 and the straight line X 2 , is a fan inlet angle γ, then the fan inlet angle γ is 150° to 180°,
the front surface side of the outlet-side flow channel is demarcated by a diffuser, and
the diffuser has a portion which separates from an upstream section virtual straight line S 1 , which is a direction of extension of an upstream section of the diffuser, towards a downstream side of the diffuser, in lateral side view.

7. The air-conditioning device according to claim 5 , wherein
the upstream side of the outlet port is an outlet-side flow channel,
the front surface side of the outlet-side flow channel is demarcated by the diffuser; and
when a direction of extension of a linear portion of the upstream section of the diffuser, in lateral side view, is an upstream section virtual straight line S 1 , and a direction of extension of a linear portion of a downstream section of the diffuser is a downstream section virtual straight line S 2 , then an angle α formed by the upstream section virtual straight line S 1 and the downstream section virtual straight line S 2 is 5° to 40°.

Assignees

• Mitsubishi Electric Corp

Inventors

• Ikeda Takashi
• Shirota Mitsuhiro
• Shishido Takahiro
• Umetsu Koichi

Classifications

• F24F1/0011 Primary

  characterised by air outlets · CPC title

• F24F1/00

  Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station · CPC title

• F24F2001/0048

  Mechanical Engineering · mapped topic

• F24F1/0018

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

• F24F13/30

  Arrangement or mounting of heat-exchangers · CPC title