JPS639115B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air blowing device using a cross flow fan, in which the stabilizer is located at a position where the blowing width is widened, and a part of the downstream side of the guider is configured to rotate around an axis. By doing so, the purpose is to make it possible to add two functions as a ventilation fan and a circulator.

Conventionally, when ventilating by bringing in outdoor air to purify indoor air, a ventilation fan like the one shown in Figure 1 is used, and when there is a temperature difference between the top and bottom of the room, a circulator like the one shown in Figure 2 is used. was used to make the temperature distribution uniform. A conventional ventilation fan includes a crossflow fan 1, a stabilizer 2, and a guider 3, as shown in FIG. 4 is a wall between indoors and outdoors. When the cross flow fan 1 rotates, a vortex V is generated, which causes a flow from the outdoors to the room. The circulator has a configuration as shown in Figure 2, and operates in the same way as a ventilation fan, but in this case, it draws air from inside the room and blows air toward the bottom of the room to equalize the temperature distribution inside the room. ing. Conventionally, indoor air has been adjusted using the above two devices. However, installing two devices in a room not only reduces the living space, but also poses problems in terms of operability and cost.

The present invention solves the above-mentioned drawbacks of the conventional art by arranging the stabilizer at a position where the blowing width is widened and by providing a blowing device in which a portion of the downstream side of the guider is configured to rotate around an axis. It is something. An embodiment of the present invention will be described in detail below with reference to FIG.

In FIG. 3, 1 is a cross flow fan that generates a vortex V by rotation and generates a flow by the generation of the vortex V; 2 is a stabilizer for stabilizing the vortex V; the axis of the main body θ forms an angle of 45° or more with respect to A-A (increases the exit width)
placed in position. 3 is the rear guider,
The downstream side 3a of the rear guider is rotated about a shaft 4 located at a position extending approximately by the radius of the crossflow fan in a tangential direction, that is, approximately parallel to the axis AA from the end 30 closest to the crossflow fan 1. It's getting old. As a result, when the downstream side 3a of the rear guider rotates to the position shown by the broken line, the position of the vortex moves from Va to Vb. Also, the upstream portion 3b of the guider is the portion 3a.
The direction of the suction flow is regulated so that when the vortex is rotated to the position indicated by the broken line, the vortex is stabilized at the position Vb. 5 is the entrance of the flow communicating with the outdoors;
6 is a flow outlet, and 7 is a wall between indoors and outdoors.

In the above configuration, when the cross flow fan 1 rotates, a vortex V is generated. When the downstream portion 3a of the rear guider 3 is located at the position shown by the solid line in the figure, the vortex is located near the stabilizer 2, that is, at the position Va. At this time, the flow draws a streamline shown by a solid line, similar to a conventional ventilation fan, and the flow blows out in a horizontal direction. Next, when the downstream portion 3a of the rear guider 3 is rotated to the position shown by the broken line, the vortex moves along the downstream portion 3a of the rear guider 3 from the position Va to the position Vb. As a result, a space is created between the stabilizer 2 and the vortex Vb, and the flow draws in streamlines from the room and blows out into the room, as shown by the broken line in the figure. At this time, the flow blows downward. In other words, a flow occurs as a circulator.

Therefore, by rotating the downstream portion 3a of the rear guider 3, one device can function as a ventilation fan and a circulator. In other words, if you want to purify the air by introducing outdoor air, place the downstream part 3a of the rear guider 3 as indicated by the solid line, and if you want to equalize the indoor temperature difference, place the downstream part 3a of the rear guider 3 as the broken line. All you have to do is rotate it to the position.

As is clear from the above description, the blower device of the present invention is constructed by arranging the stabilizer at a position where the blowing width is widened and configuring the downstream portion of the rear guider to rotate around an axis. This makes it possible for one device to serve both the functions of a ventilation fan and a circulator, increasing living space and being available at a low price. It is possible to switch between a ventilation fan and a circulator, and has excellent effects such as providing a device that is simple in configuration and easy to operate.

[Brief explanation of the drawing]

1 and 2 are cross-sectional views of a conventional ventilation fan and circulator, and FIG. 3 is a cross-sectional view showing an embodiment of the blower device of the present invention. 1... Cross flow fan, 2... Stabilizer, 3... Rear guider, 3a... Downstream part,
4...axis, Va, Vb...vortex.

Claims (1)

[Claims] 1. It has an inflow channel that is installed on a wall surface that is isolated from the outside and introduces a flow from the outside through an inlet, and by rotation around a fan shaft that is arranged at the downstream end of the inflow channel and fixed to the inflow channel. A cross-flow fan that generates a vortex and generates a flow by the generation of the vortex, a stabilizer that is provided close to the cross-flow fan and stabilizes the vortex, and the stabilizer and the cross-flow fan are sandwiched in between. The rear guider has a rear guider provided therein, and the rear guider has an arcuate shape toward the crossflow fan from a position closest to the crossflow fan, and is connected to the inflow passage, and the downstream side is approximately parallel to the wall surface and approximately the diameter of the fan. The stabilizer is configured to be rotatable on the downstream side around a position extended by the same length, and the stabilizer is configured such that the rear guider is at an angle of 45° or more about the fan axis with respect to the tangential direction from the position closest to the cross flow fan. Air blower placed in a tilted position.