JPS632040B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laminated blower impeller belonging to a so-called centrifugal blower impeller.

Centrifugal blower blades generally have a configuration in which multiple blades are arranged approximately radially between two end plates, but in this configuration many blades are caulked to the end plate, etc. This posed a problem in that it had to be fixed by screws, resulting in poor manufacturability and ease of assembly.

Therefore, an object of the present invention is to have a simple configuration, easy manufacture,
To provide a laminated blade wheel for blowing air with excellent assemblability.

Embodiments of the present invention will be described below based on the drawings.

First, in FIGS. 1 to 3, reference numeral 1 denotes a blade element having an intake opening 2 in the center, which consists of a flat plate element 3 and a corrugated plate element 4 joined to one side of the flat plate element 3. The element 4 is a concave strip 4 extending linearly.
The ridges 4a and 4b are repeated alternately and parallel to each other to form a continuous waveform. Such a wing element 1 is formed by punching out a corrugated board into an annular shape. Reference numeral 5 denotes an end plate, and a boss tube 6 is provided at the center of the end plate to be fitted onto a rotating shaft (not shown) of a motor. A large number of the blade elements 1 are stacked on the end plate 5 to form a laminated blade wheel 7 having a cylindrical shape, for example.

When the laminated impeller 7 configured in this way is driven to rotate, the uneven strips 4a and 4b of the corrugated plate element 4 act like a kind of blade, and like the conventional centrifugal impeller, the air is centered. The liquid is sucked into the hollow part of the corrugated plate element 4 and sent outward from the center through the passage 8 formed between the flat plate elements 3 by the uneven strips 4a, 4b of the corrugated plate element 4.

Now, as mentioned above, since the laminated impeller 7 sends air outward through the passage 8 formed by the corrugated plate elements 4, in order to make the wind blow out from the entire circumference of the laminated impeller 7, This can be done by changing the direction in which the valley lines and ridge lines of the uneven strips 4a and 4b of the corrugated plate element 4 extend, that is, the direction in which the passage 8 is oriented. 4 to 6 show specific examples in which the pointing direction is changed for each blade element 1, and FIG.
The blade elements 1 are stacked so that the extending directions of the blades 4b are alternately different by 90 degrees, so that the direction of passage 8 is the same for every second sheet. The blade element 1 is arranged so that the extending direction of the concavo-convex strips 4a, 4b of the element 4 is shifted by α degrees in the rotational direction of the laminated impeller 7 (indicated by arrow A in FIG. 5).
are stacked one on top of the other, and the directional directions of the passages 8 of each blade element 1 are sequentially shifted by a constant angle α. Further, in FIG. 6, a plurality of blade elements 1 are arranged in groups, and the direction in which the concave and convex strips 4a, 4b of the corrugated plate elements 4 extend changes between the groups.
The orientation direction of the image is changed.

As described above, according to this embodiment, the blade wheel 7 can be easily constructed by simply punching out the cardboard into an annular shape to form the blade element 1 and stacking the blade elements 1, thereby improving the manufacturing and assembling efficiency. can be achieved. In addition, by changing the number of laminated blade elements 1, the air blowing characteristics can be easily changed, such as the amount of air blowing can be arbitrarily set.

Moreover, in the completed form of the impeller 7, the flat plate elements 3 are interposed between the corrugated plate elements 4.
The passage 8 formed by this is divided into two by the flat plate element 3. Therefore, the cross-sectional area of the passage 8 is reduced, and separation of airflow within the passage 8 can be effectively prevented during air blowing, and the air blowing efficiency can be improved.

Note that the wing element is not limited to the one made of corrugated cardboard shown in the above embodiment, but may be made of plastic or metal. In particular, when the corrugated plate element is made of metal plate, A corrugated shape can be easily produced by simply passing a metal plate between a pair of rollers having teeth that mesh with each other.

As explained above, the present invention can be easily constructed by laminating a plurality of wing elements each consisting of a flat plate element and a corrugated plate element.Moreover, the corrugated plate element has uneven stripes formed linearly and parallel to each other. Therefore, it is easier to manufacture than when, for example, uneven stripes are formed radially.Furthermore, flat plate elements and corrugated plate elements can be easily manufactured by punching corrugated cardboard, which improves the overall manufacturing efficiency. , it is possible to improve the ease of assembly, and the blowing characteristics can be easily changed by changing the number of laminated blade elements, and the cross-sectional area of the air passage formed by the uneven stripes of adjacent corrugated plate elements can be improved. It is possible to provide a laminated impeller for blowing air which has an excellent effect of being able to effectively prevent the separation phenomenon of airflow and improve the blowing efficiency, since it becomes smaller due to the presence of the flat plate element. can.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of a single blade element, FIG. 2 is a perspective view of a laminated impeller, and FIG. 3 is a longitudinal cross-sectional view taken along the line in FIG. 2.
FIGS. 4 to 6 are diagrams showing the laminated state of the wing elements. In the figure, 1 is a blade element, 2 is an intake opening, 3 is a flat plate element, 4 is a corrugated plate element, 4a and 4b are grooves and protrusions, 7 is a laminated impeller, and 8 is an air passage.

Claims (1)

[Claims] 1. In a device that sucks air into the center and sends it outward by rotating, linearly extending concave lines and convex lines to form air passages are arranged parallel to each other and alternately. It is characterized by having a plurality of annular blade elements, which are formed by joining a corrugated plate element and a flat plate element formed in a continuous manner and have an air intake opening in the center, laminated to form a cylindrical shape. Laminated blade wheel for blowing air. 2. Claim 1, characterized in that among the laminated wing elements, there is one in which the direction of air passage is different from that of other wing elements.
The laminated blade wheel for blowing air as described in . 3. The air blower according to claim 2, wherein the blade elements are stacked one by one or in groups of a predetermined number so that the direction of air passage changes for each group. Laminated wing vehicle. 4. The laminated blade wheel for blowing air according to claim 2, wherein each of the blade elements is stacked so that the direction of the air passage sequentially changes by a certain angle. 5. The laminated blade wheel for blowing air according to claim 2, wherein the blade elements are stacked such that a predetermined number of blade elements have the same direction of air passage.