JPS5834353Y2 - Ventilation structure of air conditioners, etc. - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a ventilation structure equipped with a propeller fan, and one of its purposes is to improve the efficiency of the fan.

Conventionally, the ventilation structure of a propeller fan used in an air conditioner or the like is configured as shown in FIGS. 1 to 4.

That is, in FIGS. 1 and 2, propeller fan a
An air guide b having a tube f surrounding the outer periphery of the substrate C
It is fixed by welding etc. to the outer box d, and an opening g is provided in the outer box d.
Air is flowing out.

Here, when the fan a is rotated by the motor e, air flows out, but at this time, the air flow
The efficiency of air blowing was decreasing.

Therefore, the opening of the outer box d needs to be large so that the air flow X does not hit it, as shown in Figure 2.If a large air volume is required and a large fan is used, the air conditioner must be large. It had the disadvantage of being

Also, as shown in Fig. 3, a configuration is known in which the air guider is formed by drawing the outer box d inward, but in this case, a long drawing depth is required and the processing is difficult. However, the air flow X turns around the corner as shown in the figure, causing separation and creating a large air resistance.

Furthermore, as shown in Fig. 4, there is a known ventilation structure in which the air guider is bent near the air inlet to better match the air flow. In addition to requiring additional steps and increasing processing costs, it also had the drawback of not being able to be mass-produced.

The present invention is intended to simultaneously solve each of the drawbacks found in the conventional ventilation structure.

Hereinafter, the present invention will be explained based on FIGS. 5 and 6 of the accompanying drawings showing one embodiment thereof.

In the figure, 1 is a propeller fan, which is driven by a motor 2.

Reference numeral 3 denotes an air guider, which is fixed to the board 4 by welding or the like so as to surround the outer periphery of the fan.

Reference numeral 5 denotes an outer box, and the air blowing part 6 is drawn inside as shown in the figure, and is in a state where it abuts against the air guider blowing part 7.

However, the diameter D5 of the inner tip of the air blowing part 6 in the outer box 5 is slightly larger than the diameter D4 of the tip of the air guider blowing part 7 to avoid mutual collision.

Further, the aperture shape of the air blowing portion 6 is expanded in the air blowing direction.

Therefore, with such a configuration, the air flow y coming out of the air guider 3 is connected by the constriction shape from the outer box 5 as shown in the figure, and is blown out smoothly without collision.

Therefore, there is no need to take an unnecessarily large air blowing part 6 (opening) of the outer box 5, and even if a large diameter fan is used, the main body size can be reduced.

Moreover, the inner side of the air guider 3 can be shaped to follow the air flow y, and the enlarged shape of the outer box drawing process helps restore the static pressure of the air after blowing out, so higher fan efficiency can be obtained.

Further, the drawing process of the air guider 3 and the drawing process of the outer case 5 are both simple processes and can be performed in one process, resulting in low cost.

Although the ventilation structure of an air conditioner has been described in this embodiment, a ventilation structure using a propeller fan as a cooling means for other devices can be implemented in the same manner, and the same effects can be obtained.

As is clear from the above embodiments, the ventilation structure of the air conditioner, etc. according to the present invention is fixed to the air outlet part of the propeller fan of the air conditioner, etc. by welding or the like to the substrate that constitutes the main body of the air conditioner, etc. An air guider is provided in the air guider, and a drawn opening is provided in the outer box constituting the main body of the air conditioner, etc. so as to face the air guider and expand in the air blowing direction. The ventilation path is formed by an opening larger than this air guider, and the opening is shaped to expand in the air blowing direction, so the blowing air can flow smoothly, achieving higher fan efficiency, and a large diameter Even if a fan is used, the dimensions of the air conditioner can be reduced, and a ventilation circuit that increases fan efficiency can be supplied in large quantities at low cost through simple processing.

[Brief explanation of the drawing]

1 and 2 are a plan sectional view and a side sectional view showing a conventional ventilation structure, respectively, FIG. 3 is a plan sectional view of another conventional ventilation structure, and FIG. 4 is a still another conventional example. FIG. 5 is a plan sectional view of a main part of an air conditioner equipped with a ventilation structure according to an embodiment of the present invention;
FIG. 6 is a side sectional view of the main parts of the air conditioner. 1... Propeller fan, 3... Air guider, 4... Board, 5... Outer box, 6...
...Air blowing section (guider and opening).

Claims (1)

[Scope of utility model registration request] An air guider fixed to a substrate constituting the main body of the air conditioner etc. is provided at the air outflow portion of a propeller fan provided in an air conditioner etc. A ventilation structure for air conditioners, etc. that has air guiders and openings that face each other and expand in the air blowing direction.