JPH04106417U - air conditioner - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the performance of the turbo fan 6 by giving pre-swirling to the air sucked into the turbo fan 6. [Structure] By installing a panel 23 on the front of the bell mouth 12, an air suction channel 24 is formed that sucks air from the outer periphery, and by installing a guide vane 25 in this channel 24, the air is sucked into the turbo fan 6. Gives a pre-swirl to the air.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to an air conditioner that is embedded in or suspended from the ceiling.

0002

[Conventional technology]

An example of a conventional ceiling-embedded air conditioner is shown in FIG. Inside the case body 2 buried in the ceiling 1 are a heat exchanger 7, a drain pan 10, and a motor. It has built-in 5 motors, 6 turbo fans, 12 bell mouths, etc. This case body 2 A ceiling panel 8 is attached to the lower part of the ceiling panel 8, and a suction port 3 is formed in the center of the ceiling panel 8. An air outlet 4 is formed adjacent to the inlet 3.

0003 When this air conditioner is operating, refrigerant from an outdoor unit (not shown) flows through the heat exchanger 7. The turbo fan 6 is driven by the motor 5. Then, the room inside room 9 Air passes through the suction grill 11 and filter 13 from the suction port 3, and is guided to the bell mouth 12. is drawn into the turbo fan 6 and energized. Then, the process of flowing through the heat exchanger 7 The air becomes conditioned air by being cooled or heated by be done.

0004

[Problem that the idea aims to solve]

As the case body 2 becomes thinner, the space for accommodating the bell mouth 12 is reduced. In order to ensure that the air flow sucked into the turbo fan 6 by the bell mouth 12 is sufficiently adjusted. As a result, the performance of the turbo fan 6 deteriorates. there were.

[0005]

[Means to solve the problem]

This invention was proposed to solve the above problems, and its gist is as follows: However, in an air conditioner that has a turbo fan with a bell mouth on the suction side, Air is sucked from the outside between the bell mouth and the panel installed in front of it. In this air suction flow path, the turbo fan is installed. Features a guide vane that guides the intake air flow in the opposite direction to the rotation direction. There is an air conditioner.

[0006]

[Effect]

Since the present invention has the above configuration, air is transferred to the air suction channel from outside. In the process of being sucked in from the circumference and flowing through this flow path, the turbofan is drawn in by the guide vanes. The air is pre-rotated in the opposite direction to the rotation direction of the engine, and in this state it is sucked into the turbo fan. It will be done.

[0007]

【Example】

An embodiment of the invention is shown in FIGS. 1-3. Air outlets 21 are arranged along the edges of the four sides of the rectangular ceiling panel 20 and in the center thereof. suction ports 22 are formed at each of the four corners. A panel 23 is installed at a slight interval in front of the bell mouth 12, and this bell mouth An air suction channel 24 that sucks air from the outer periphery is formed between the space 12 and the panel 23. Ru. A plurality of guide vanes 25 (four in the figure) are installed on the top surface of this panel 23. This guide vane 25 guides the suction air flow flowing through the air suction channel 24. The rotation direction (arrow) of the turbo fan 6 is directed in the opposite direction. The other configurations are the same as the conventional one shown in Fig. 4, and corresponding members are designated by the same reference numerals. It is attached.

[0008] Therefore, when this air conditioner is operated, the turbo fan 6 is driven by the motor 5. When the indoor air is sucked into the air suction channel 24 from each suction port 22, this air In the process of flowing through the suction channel 24, the turbine is guided by the guide vane 25. It is pre-swiveled to rotate in a direction opposite to the rotational direction of the bofan 6. In this state, after being sucked into the turbo fan 6 and energized, the heat exchanger 7 is activated. It flows through and becomes conditioned air, which is blown out into the chamber 9 from each outlet 21. In addition, in the above embodiment, the guide vane 25 is provided on the panel 23, but the guide vane 25 is provided on the panel 23. It can also be provided in the mouse 12.

[0009]

[Effect of the idea]

In this invention, air is sucked into the air suction channel from its outer periphery; During the flow process, the guide vanes pre-rotate the flow in the opposite direction to the rotation direction of the turbo fan. It is forced to rotate, and in this state it is sucked into the turbo fan, so the turbo fan empties. The force characteristics are improved and its performance is improved. Also, the height of the bell mouth can be lowered. Therefore, it can contribute to making the air conditioner thinner.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view taken along line A-A in FIG. 2, showing one embodiment of the present invention.

FIG. 2 is a sectional view taken along line BB in FIG. 1;

FIG. 3 is a perspective view of a panel in the above embodiment.

FIG. 4 is a longitudinal sectional view of a conventional air conditioner.

[Explanation of symbols]

6 Turbo fan 12 Bellmouth 23 panels 24 Air suction channel 25 Guide vane

Claims (1)

[Scope of utility model registration request] Claim 1: An air conditioner having a turbo fan with a bell mouth on the suction side, wherein an air suction flow path for sucking air from the outer periphery is formed between the bell mouth and a panel installed in front of the bell mouth, and An air conditioner characterized in that a guide vane is installed in the air suction flow path to guide the suction air flow in a direction opposite to the rotational direction of the turbo fan.