JPS6354154B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a blower using a cross-flow type impeller, in particular a blower whose wind direction is variable.

Conventional configuration and its problems Conventionally, this type of blower has the following structure, as shown in Figure 1.
An arc-shaped first
A guide plate 2 is disposed, one end of the first guide plate 2 is placed close to the outer periphery of the impeller 1 as a first tongue portion 3, and the other end is a first tongue portion 3 provided near the first tongue portion 3. The impeller 1 has a first free end 5 which can be rotated in the direction of two-dot chain arrows A ₁ to _{A 2} around the support 4 of the impeller 1 .
A second guide plate 6 formed in an arc shape at a position that is almost symmetrical to the first guide plate 2 with respect to the rotation center 0 of
A second tongue portion 7 is provided at one end of the impeller 1 in a position that is approximately symmetrical to the first tongue portion 3 with respect to the rotation center 0 of the impeller 1, and a second tongue portion 7 is provided close to the outer periphery of the impeller 1. , the other end is configured by providing a second free end that is rotatable in the direction of two-dot chain arrows B ₁ to _{B 2} around a second support 8 provided near the second tongue portion 7,
The angle between the first tongue 3 and the second free end 9 is O ₁ and the angle between the second tongue 7 and the first free end 5 is O ₂ with respect to the center 0 of the impeller 1. When the relationship O ₁ > O ₂ is established, by rotating the impeller 1 in the direction of the dashed arrow a, a vortex flow in the direction shown by the dashed-dotted arrow b is formed near the second tongue 7, and this causes from the first opening 10 formed by the first tongue 3 and the second free end 9 to the second opening 11 formed by the second tongue 7 and the first free end 5. A backward airflow (indicated by the solid arrow) is formed. Also, O ₁ <
By rotating the first guide plate ₂ and the second guide plate 6 so that the angle of A flow toward section 10 can be formed. That is, the first guide plate 2 and the second guide plate 6
The air supply direction is reversed by rotating the first support 4 and the second support 8 around the first support 4 and the second support 8. Therefore, in the above configuration, the air blowing direction is limited to two directions, and the direction of the intake air flow from the first opening 10 and the direction of the intake air flow from the second opening 11 are limited to two directions.
The angle formed with the direction of the discharge air flow from O ₀ is O ₀
≒ 90 degrees, and depending on the operating conditions, the discharge flow may flow directly towards the suction port through the vicinity of the blower, which is a so-called short circuit condition, which may reduce the blower's performance. For example, a ventilation blower that moves indoor air to the outside,
Alternatively, the scope of use was limited to the extent that it could be used to supply outside air into a room.

OBJECT OF THE INVENTION The present invention eliminates the drawbacks of the prior art, and allows the suction direction and discharge direction of the airflow flowing through the blower to be approximately adjusted.
The purpose of the present invention is to provide a blower that has a blower configuration of 180° and can blow air in any direction around the rotational axis of the impeller without reducing blowing performance.

Structure of the Invention In order to achieve this object, the present invention includes a first guider and a second guider that are disposed opposite to each other with a cross-flow type impeller in between, and are located upstream of the impeller. The first guider and the second guider form an intake port, and the first guider and the second guider located downstream of the impeller form a discharge port, and the first guider is provided with a first tongue close to the outer periphery of the impeller at the downstream part of the impeller, and the second guider is formed into a substantially arc shape between the first tongue and the center of the impeller, which are opposed to each other. One end is provided with a second tongue close to the outer periphery of the impeller at the upstream part of the impeller, and the first tongue is formed so as to gradually expand the distance between the tongue and the outer periphery of the impeller while reaching the other end. The vicinity of the upstream end of the second guider and the vicinity of the downstream end of the second guider form substantially parallel surfaces, and both guiders are integrally rotatable along the outer periphery of the impeller.

By configuring the blower in this way, when the impeller rotates and an airflow is formed, the vortex that forms the center of airflow formation is directed to the impeller on the second guider side facing the first tongue. The airflow formed near the outer periphery and sucked into the impeller by this vortex flow becomes a flow along the second guider after being discharged from the impeller,
The air is discharged from the blower in substantially the same direction as the airflow direction at the blower's suction port. Therefore, it is possible to prevent a so-called short circuit in which the airflow from the discharge port flows directly to the suction port. Furthermore, by rotating the first and second guiders together along the outer periphery of the impeller around the rotation center of the impeller, the discharge direction can be changed to any direction around the rotation axis of the rotor. Moreover, since the positional relationship between the impeller and the first and second guiders is always constant, there is no reduction in air blowing performance due to changes in wind direction.
This makes it possible to provide a highly effective blower.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. 2 and 3. FIG. 2 shows a plan sectional view for explaining the principle of the present blower, and FIG. 3 shows a perspective view of the structure of the blower according to the present invention.

As shown in FIGS. 2 and 3, this blower A uses a cross-flow type impeller 21 vertically, and an electric motor 35 for driving the impeller 21 is disposed below the impeller 21. A first guider 23 having a first tongue portion 22 is disposed outside of the impeller 21, and the first tongue portion 22 is disposed downstream of the impeller 21 close to the outer periphery of the impeller 21. In addition, the impeller 21
A second guider 24 is disposed on the opposite side of the first guider 23, and the second guider 24
The surfaces that sandwich the impeller 21 and face the first tongue portion 22 are formed into a substantially arc shape to form an arc-shaped guide 25, and one end thereof and the upstream portion of the impeller 21 are brought close to the outer periphery of the impeller 21. The arcuate guide 25 is formed so as to gradually enlarge the gap between the outer periphery of the impeller 21 and the arcuate guide 25 while reaching the other end. The vicinity and the vicinity of the downstream end of the second guider 24 constitute substantially parallel planes, and the first guider 23 and the second guider 24 are formed by a rotary plate 34 below the impeller 21 and a support plate 27 above. , the impeller 21, the first guider 23, and the second guider 24 are integrally connected so as to maintain a constant positional relationship, and by rotating the rotary plate 34, the impeller 21 is rotated around the rotation axis of the impeller 21. Both guiders 23 and 24 are configured to be able to rotate along the outer periphery in the direction of the two-dot chain arrow bb'. Also, the impeller 21 between the guiders 23 and 24
The upstream opening is the suction port 28 of the blower A, the downstream opening is the discharge port 29, and the impeller 2 is connected to the discharge port 29.
A plurality of deflection vanes 30 are arranged to deflect the air flow sent from the impeller 21 in the vertical direction, that is, in the longitudinal direction of the impeller 21, and each deflection vane 30 is connected via a connecting rod 31, and is integrally formed. The rotating plate 34 has a structure that can be tilted vertically, and the rotating plate 34 is connected to the electric motor 3.
5 as a power source, the deflection blades 30 can be automatically rotated via cams, gears, etc. (not shown), and the deflection blades 30 can also be tilted vertically downward almost periodically as the rotating plate 34 rotates. This is a possible configuration. Note that 32 indicates a base of the blower A, which has an electric motor 35 built therein. 33 indicates a protective net for preventing pieces of paper etc. from flowing into the blower A.

Next, the effect will be explained. With the above configuration, when the impeller 21 rotates in the direction of the dashed arrow a, the airflow sucked from the suction port 28 is directed from the vicinity upstream of the first tongue portion 22 toward the arcuate guide 25 toward the impeller 21. After flowing across the air, the air flows along the inner surface of the second guider 24, and forms a flow (indicated by a solid arrow) that is ejected from the outlet 29 to the outside of the blower A. In particular, the airflow indicated by the solid arrows flows through the impeller 21, the first guider 23, and the first tongue 2.
2, second guider 24, arcuate guide 25, second
By molding and arranging the tongue portion 26 as described above, the vortex flow 35 (indicated by the dashed-dotted line arrow), which is the basis of air flow formation, flows through the second tongue portion 22 facing the first tongue portion 22.
Because it is formed near the outer periphery of the impeller 21 near the guider 24, after flowing across the impeller 21,
The main stream flows almost parallel to the inner surface of the second guider 24. Therefore, the inflow direction from the suction port 28 and the discharge direction from the discharge port 29 are almost the same direction, that is, the air flow flows almost directly across the blower A, and the discharge flow from the discharge port 29 is the same as the discharge direction from the discharge port 29. This allows the so-called short circuit that flows directly to 28 to be significantly reduced. Furthermore, the present invention combines both guiders 23 and 24 integrally with a rotary plate 34 and a support plate 27, and has a rotating speed of 34.
By rotating both guiders and impeller 2,
In addition, both guiders 23 and 24 can be rotated along the outer periphery of the impeller 21 to maintain a constant positional relationship with respect to the impeller 21. and can be changed without changing the air blowing performance. Further, a plurality of deflection vanes 30 for deflecting the air flow in the vertical direction are arranged at the discharge port 21, and
As the rotary plate 34 is configured to be able to periodically tilt vertically downward as the rotary plate 34 automatically rotates,
In addition to the change in the wind direction around the rotation axis of the impeller due to the rotation of the rotary plate 34, it is possible to cause a change in the wind direction in the vertical direction, that is, in the direction parallel to the rotation axis, making it possible to effectively blow air into the indoor space. This is something that can be done.

Effects of the Invention As described above, according to the present invention, by causing the airflow to flow almost linearly across the inside of the blower, a portion of the discharged airflow flows directly to the suction port.
In addition to significantly reducing the deterioration in air blowing performance caused by so-called short circuits, by integrally connecting both guiders, maintaining a constant positional relationship with the impeller, and rotating along the outer circumference of the impeller,
The horizontal direction of the wind can be changed to any direction around the central axis of the impeller without degrading the air blowing performance, and the vertical direction can also be changed using deflection blades, allowing for efficient air blowing. can be made possible. Furthermore, by automatically moving the rotation of the rotary plate and the inclination of the deflection blades using gum, gears, etc., indoor air circulation can be performed effectively and a better living space can be obtained. It has excellent effects.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a conventional cross-flow type blower, and FIGS. 2 and 3 are a plan sectional view and a perspective view, respectively, of the cross-flow type blower according to an embodiment of the present invention. A... Blower, 21... Impeller, 22... First
tongue portion, 23...first guider, 24...second
guider, 25... arcuate guide, 26... second
tongue portion, 28...intake port, 29...discharge port, 30
... Deflection vane, 34 ... Rotating plate.

Claims (1)

[Claims] 1. A first guider and a second guider are disposed opposite to each other with a cross-flow type impeller in between, and the first guider and the second guider are located upstream of the impeller.
The first guider and the second guider form an intake port, and the first guider and the second guider are located on the downstream side of the impeller and form a discharge port, and the first guider has an impeller located downstream of the impeller. A first tongue close to the outer periphery is provided, and the second guider is formed into a substantially circular arc shape between the first tongue and the center of the impeller, and one end thereof is formed at the upstream portion of the impeller. A second tongue is provided close to the outer periphery of the impeller, and is molded to gradually expand the distance between it and the outer periphery of the impeller while reaching the other end. A cross-flow type blower in which the downstream end of the second guider forms a substantially parallel plane, and both guiders are integrally rotatable along the outer periphery of the impeller.