JPH01170792A - Cross flow fan device - Google Patents

Abstract

PURPOSE:To restrain an increase in air blasting resistance at the time of changing the wind direction by oscillating the first and second guide blades in a diffuser, interlocking with each other and forming two passages by both guide blades, a fixed scroll and a stabilizer. CONSTITUTION:When an operating lever is operated, the first and second guide blades 11, 12 are interlocked and oscillated by a ling mechanism to form a passage indicated by a solid line in the drawing. At this time, wind sucked from the direction of an arrow A is let flow in the direction of an arrow B by the action of a stabilizer 8. Secondly, when the operating lever is operated in the opposite direction, the first and second guide blades 11, 12 form a passage indicated by an imaginary line. At this time, the wind direction is changed to the direction of an arrow C. The lower surfaces 11A, 12A of the guide blades 11, 12 form a continuous smooth curved surface. In this arrangement, even if either direction of the arrows B, C is selected, the direction so of cross flow generated by an impeller 2 is not curved largely, so that air blasting resistance is not increased as to secure the air-blast quantity.

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a cross-flow fan type blower, and in particular,
It relates to a structure for changing the direction of the wind.

``Prior Art'' In a conventional cross-flow fan with a structure that changes the wind direction, a looper 32 for changing the wind direction is generally provided on the grill 31 of the outlet, as shown in Fig. 5. Met. However, since the fan characteristics of the cross-flow fan are not static pressure type, there is a problem in that when the louvers 32 stand up and the ventilation resistance increases, the air volume decreases rapidly. Conventionally, this drawback has been compensated for by making the diameter of the impeller 33 sufficiently large, but this poses a problem because there are restrictions on the dimensions of a fan installed in the interior of an automobile.

Furthermore, as shown in FIG. 6, if the air outlet 35 is provided with a greatly curved air outlet body 36, and the air outlet body 36 is structured to swing (Utility Model Publication No. 12965/1983). ,
Although it is thought that the ventilation resistance can be made relatively small, there is a problem in that the large ventilation port body 36 becomes an obstacle when installed in a narrow vehicle interior.

Alternatively, as a more basic method, a structure in which the casing of the crossflow fan itself can be rotated to change the direction of airflow can be considered, but the impeller rotation mechanism and the casing rotation mechanism must be configured separately. There was a problem that the structure was complicated and expensive.

"Problems to be Solved by the Invention" The present invention has been made to solve the above problems, and is capable of changing the direction of air flow without increasing ventilation resistance, and is small and has a simple structure. The purpose of the present invention is to provide a cross-flow fan device.

``Means for Solving the Problems'' Therefore, in the present invention, a casing including a fixed scroll forming a wall surface of a diffuser forming a discharge part and a stabilizer forming a tongue forming a vortex flow, and an impeller driven to rotate. A cross-flow fan device comprising: a first guide vane, one end of which is supported near the fixed scroll and the other end of which is swingable between a swinging position in contact with the fixed scroll and a swinging position in the middle of the diffuser; , one end is supported by the casing of the diffuser section, and the other end is swingable between a swinging position in which it contacts the stabilizer and a swinging position in which it contacts the first guide vane in the middle of the diffuser. and the first and second guide vanes, and the two guide vanes are connected between a swinging position where the two guide vanes touch each other and a swinging position where each guide vane touches the fixed scroll or the stabilizer.
A cross-flow fan device is provided, comprising: a link mechanism that interlocks and swings two guide vanes.

"Operation" According to the above configuration, in the swinging position where the two guide vanes are in contact with each other, the two guide vanes together form a scroll that forms the wall surface of the diffuser.

In addition, the stabilizer alone forms a tongue that generates a vortex flow. Therefore, the direction of the crossflow across the impeller is determined by the scroll formed by the stabilizer and the two guide vanes, and the direction guided by the two guide vanes. Air is blown to

On the other hand, in the swing position where the two guide vanes are in contact with the fixed scroll or the stabilizer, the first guide vane is integrated with the fixed scroll and forms part of the wall surface of the diffuser. The second guide vane together with the stabilizer forms part of the tongue that generates the swirl. That is, the shape of the tongue that generates the vortex becomes different from the previous swing position. Therefore, the position of the vortex changes, the direction of the crossflow across the impeller becomes different from the previous direction, and the air is blown in the direction guided by the fixed scroll.

In this way, the two guide vanes not only change the direction of the diffuser wall that guides the air, but also change the effective shape of the casing tongue that generates the vortex, changing the position of the vortex and creating a cross-flow fan. It also has the effect of changing the original direction of air blowing. Therefore, in the link mechanism 2
By changing the swinging position of the two guide vanes, the airflow can be improved without increasing the airflow resistance or reducing the airflow volume.
Air blow direction can be changed.

"Embodiments" Examples of the present invention will be specifically described with reference to the drawings.

FIG. 4 is a perspective view of a cross-flow fan device according to the present invention, FIG. 1 is a sectional view taken along the line 1-1 in FIG. 4, and FIG. 2 is a sectional view taken along the line ■-■.

The cross-flow fan device has a thin box shape, and a cylindrical impeller 2 is rotatably supported on a side wall 3 inside a case 1, and around the zero impeller 2, which is directly connected to a motor 4 and driven to rotate, there are: A rear panel 5 having an arc-shaped cross section serves as a member constituting the casing of the cross-flow fan. A fixed scroll 6 that continues from the rear panel 5 and extends spirally forward is formed integrally with the upper panel 7, and a plate-shaped stabilizer 8 is formed diagonally downward in the front and is integrally formed with the lower panel 9, and is arranged respectively. ing. The fixed scroll 6 and the stabilizer 8 also serve as the upper and lower walls of the diffuser 10. The diffuser 10 is a discharge part where air discharged from the impeller 2 is diffused.

Two guide vanes 11 and 12 are disposed within the diffuser 10. Each guide XECII, 12 is diffuser 1
A support shaft 13.1 having a total width of 0 and protruding from side to side
4 is swingably supported by the side wall 3. The first guide vane 11 has its support shaft 13 supported in the vicinity of the fixed scroll 6, the rear end edge of the guide vane 11 is constantly in contact with the fixed scroll 6, the front end edge is in close contact with the fixed scroll 6, and the diffuser 10 It is possible to swing between the middle position. The fixed scroll 6 has the first guide vanes 11 so that when the first guide vanes 11 are in close contact with the fixed scroll 6, the lower surfaces 11A of the fixed scroll 6 and the first guide vanes 11 form a smooth curved surface. A recess 15 is provided for accommodating the. The second guide vane 12 has its support shaft 14 supported at the middle height of the opening of the diffuser 10,
The front edge of the guide vane 12 can swing between a position where it contacts the front edge of the first guide vane 11 on the upper side and a position where it contacts the front edge of the stabilizer 8 on the lower side.

The support shaft 13.14 of each guide vane 11.12 is connected to the left and right side walls 3.
It protrudes from the side chamber 16 and is connected by a link mechanism within the side chamber 16. That is, as shown in FIG.
Levers 17 and 18 are fixed to 3.14, and each lever is connected by a rod 19. A portion of the lever 18 fixed to the support shaft 14 of the second guide vane 12 protrudes forward from the case 1, and also serves as the operating lever 18.

The operation will be explained based on the above configuration. When the operating lever 18 is operated downward, the second guide vane 12 swings upward, and the first guide vane 11 connected by the rod 19 swings downward so that their front edges touch each other and the first guide vane 12 swings upward. The state will be as shown by the solid line in the figure. In this swing position, the two guide vanes 11, 12 are integrated, and the lower surfaces 11A, 12A of each guide vane 11, 12 form a continuous smooth curved surface, forming a new scroll forming the upper wall surface of the diffuser 10. do. Further, the stabilizer 8 alone constitutes a tongue portion that generates a vortex flow. Therefore, the wind sucked in from the arrow A at the rear of the impeller 2 is blown smoothly in the direction shown by the arrow B.The stabilizer is arranged so that the direction of the crossflow generated by the impeller 2 is in the direction of the arrow B. This is because the position of number 8 is determined.

Next, when the operating lever 18 is operated upward, the second guide vane 12 swings downward as shown by the imaginary line in FIG. The first guide vane 11 swings upward and is accommodated in the recess 15 and becomes integral with the fixed scroll 6. In this swing position, the lower surface 11A of the first guide vane 11 forms a curved surface continuous with the fixed scroll 6, and the second guide vane 12, which forms a part of the fixed scroll 6, has its front edge connected to the stabilizer 8.
The upper surface 12B of the second guide vane and the stabilizer 8 form a tongue having a substantially triangular cross section.

Since the core vortex is generated by this substantially triangular tongue, the direction of the crossflow generated by the impeller 2 changes slightly upward, and air is blown smoothly in the direction of arrow C.

In this way, by changing the swinging position of the two guides Xll and 12, the shape of the tongue and scroll that generates the vortex can be changed, and the direction of the crossflow generated by the impeller 2 can also be changed. , changing the direction of air blowing. Regardless of which blowing direction is selected, the direction of the crossflow generated by the impeller 2 is not significantly bent, so that the blowing amount can be ensured without increasing the blowing resistance.

In the embodiment described above, the stabilizer 8 is fixed to the lower panel 9, but the stabilizer 8 also has a swingable structure and is connected to the second guide vane 12 by a link mechanism, so that the wind direction can be controlled by the operating lever 18. It is also possible to follow the switching and change the angle so that the core vortex is generated at a position more suitable for the wind direction.

Furthermore, in the embodiment described above, the length of each guide vane 11.12 was set to be the length of the entire width of the diffuser 10, and the wind direction was changed in a negative direction.
It is also possible to separate it at the center of the width of 0 and swing it separately on the left and right sides, so that different directions can be selected independently using the left and right operation levers 18, and air can be blown in different directions on the left and right sides. . This is effective, for example, in a pigeon coop where it is desired to select the wind direction independently for the driver's seat and the passenger's seat.

"Effects of the Invention" As explained above, the present invention has the above configuration, and changes the wind direction by changing the effective shape of the scroll and the tongue that constitute the casing of the crossflow fan using two guide vanes. Because of this, there is almost no increase in airflow resistance due to changing the airflow direction, and there is an excellent effect that the airflow direction can be changed without reducing the amount of airflow. Also, 2
Since the two guide vanes are housed within the diffuser and do not protrude to the outside, there is an effect that the shape of the fan device does not become large despite having a wind direction switching mechanism.

[Brief explanation of the drawing]

1 to 4 show one embodiment of the present invention, and the 11th!
I is a sectional view taken along the line I-I in Figure 4, and Figure 2 is a cross-sectional view taken along the line ■-■ in Figure 4.
3 is a sectional view taken along the line ■-■ in FIG. 4, FIG. 4 is a perspective view of a cross-flow fan device, and FIGS. 5 and 6 are sectional views showing a conventional wind direction switching mechanism, respectively. It is. 2090 impeller, 380. side wall, 501. Rear panel, 690. Fixed scroll, 800. Stabilizer, 10, Diffuser, 11, 1st
guide wings, 12. ,,second guide vane, 17,,,
Lever, 18., Operation lever, 19. ,,rod. 111 (1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 b

Claims (1)

[Scope of Claims] A cross-flow fan device comprising: a fixed scroll forming a wall surface of a diffuser forming a discharge portion; a casing including a stabilizer forming a tongue forming a vortex; and an impeller driven to rotate. a first guide vane, one end of which is supported nearby and the other end of which is movable between a swinging position in contact with the fixed scroll and a swinging position in the middle of the diffuser; and one end supported by the casing of the diffuser section. a second guide vane which is swingable between a swinging position where the other end contacts the stabilizer and a swinging position where the other end contacts the first guide vane in the middle of the diffuser; A link that connects two guide vanes and swings the two guide vanes in conjunction between a rocking position where the two guide vanes touch each other and a rocking position where each guide vane touches a fixed scroll or a stabilizer. A cross-flow fan device comprising: a mechanism;