Housing produced in one working step

Abstract

The invention relates to a housing, wherein the housing has a cover disk having a cylindrical wall and a central receptacle with a hub for supporting a fan having a diagonal fan wheel, wherein a plurality of three-dimensionally curved air guide vanes (S) are arranged about the hub, characterized in that the air guide vanes (S) are materially connected to the cylindrical wall and as a result, the housing is produced in one working step.

Claims

1. A housing for a ventilator with a diagonal fan, comprises: a cover disk having a first cylindrical wall and a central receptacle with a hub for mounting the ventilator including a diagonal ventilator wheel; multiple three-dimensionally curved impeller vanes are arranged around the hub; the impeller vanes are connected in a materially-joined manner to a second cylindrical wall of the central receptacle; the housing is produced in one work step injection molding process; the central receptacle of the housing forms a shaft base, the shaft base is on a shaft side, on the side facing toward the ventilator wheel, and the shaft base includes an asymmetrically embodied ribbing formed from several webs or ribs arranged in a star shape, the ribbing increases the strength of the shaft base for supporting the ventilator wheel.

2. The housing according to claim 1, wherein the housing is formed both integrally and also in one piece.

3. The housing according to claim 1, wherein the one work step injection molding process produces the housing produced in an injection procedure in an injection mold from a sprue side to a washboard side.

4. The housing according to claim 3, wherein a material thickening is provided on the sprue side on the housing.

5. The housing according to claim 3, wherein the process is performed in such a way that a thickening is provided once and an indexing jump is provided once, on the sprue side at a sprue and diametrically opposing on the washboard side.

6. The housing according to claim 1, wherein the impeller vanes are connected with radii in the transition at an inner wall of the first cylindrical wall.

7. The housing according to claim 1, wherein several respective radially extending ribs are arranged unevenly in number in relation to an imaginary middle partition line through the housing, diametrically opposing on both sides of the imaginary middle partition line, wherein three ribs of the radially extending ribs are provided on a first side and two ribs of the radially extending ribs are provided on the diametrically opposing side.

8. The housing according to claim 7, wherein curved ribs are provided at the shaft base that are arranged radially around the hub at least in sections and intersect the radially arranged ribs, at approximately a middle in relation to a longitudinal extension of the radially arranged ribs.

9. The housing according to claim 1 wherein that two window-like openings are provided in the shaft base in a region without ribbing.

10. The housing according to claim 1, wherein the second cylindrical wall extending around the hub is provided at the shaft base and the impeller vanes are integrally connected, using a connecting section, to the second cylindrical wall.

11. A method for producing the housing according to claim 1, wherein the housing was produced in one work step in an injection molding method in an injection mold.

Description

DRAWINGS

(1) The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.

(2) FIG. 1 is a perspective view of an exemplary embodiment of a housing produced integrally or unitarily (in one work step) for accommodating a diagonal ventilator;

(3) FIG. 2 is an opposing perspective view of the exemplary embodiment of a housing produced integrally or unitarily (in one work step) according to FIG. 1;

(4) FIG. 3 is a top plan view of the housing in FIG. 2;

(5) FIG. 4 is a schematic view of an injection molding profile from the sprue side up to the indexing on the washboard side; and

(6) FIG. 5 is a perspective view of the housing 10 with an inserted ventilator.

DETAILED DESCRIPTION

(7) The disclosure is explained in greater detail with reference to FIGS. 1 to 5, wherein identical reference signs represent identical functional and/or structural features.

(8) FIG. 1 is a perspective view of one exemplary embodiment of a housing 10 produced integrally or unitarily (in one work step) to accommodate a diagonal ventilator, as seen in FIG. 5.

(9) The housing 10 includes a cover disk 20, with an opening 24, and a cylindrical wall 21. The cylindrical wall 21 extends in an axial direction from the cover disk 20. The cover disk furthermore has the function here of being used as a flange connection. The cover disk 20 is brought into an assembly connection with a ventilator V, as shown in FIG. 5. For this purpose, the cover disk 20 includes flange connectors 26 at its corners.

(10) The housing 10 includes a central receptacle 30 with a hub 31 for mounting to a ventilator. The ventilator includes a diagonal ventilator wheel. The hub 31 is connected here as a cylindrical sleeve to the shaft base 32.

(11) Multiple three-dimensionally curved impeller vanes S are arranged and spaced apart from each other around the hub 30. These impeller vanes S are connected in a materially-joined manner to the cylindrical wall 37 of the central receptacle 30.

(12) The process direction during the injection is well visible from FIG. 4. FIG. 4 is supposed to schematically show the one work step in the injection molding method. The housing 10 is produced in an injection procedure in an injection mold via a sprue from a sprue side A to a washboard side W. The channel profile in the region after the outlet W, to the washboard side of the injection mold, is a formed curved. Therefore, a material thickening 12, as is schematically indicated in FIG. 2, is located on the sprue side on the housing 10 in the region of the attachment of the sprue on the sprue side A.

(13) FIG. 3 shows a top view of the view from FIG. 2. The central receptacle 30 of the housing 10 has a shaft base 32. The shaft base 32 includes an asymmetrically embodied ribbing made up of ribs Ron the shaft side. Thus, the ribbing 12 is on the side facing toward the ventilator wheel.

(14) Multiple (here 5) webs or ribs 34, arranged in a star shape are provided in this embodiment. These multiple ribs 34 are aligned unevenly in relation to an imaginary middle partition line T in the position. Furthermore, two window-like openings 36 are provided in the region without ribbing in the shaft base 32. These openings are also oriented asymmetrically in relation to the hub 31.

(15) Furthermore, two curved (partially circular) ribs 38 are provided on the shaft base 32. The two curved ribs 38 are arranged at least in sections radially around the hub 31. They intersect the radially arranged ribs 34 approximately in the middle in relation to the longitudinal extension. Each curved rib 38 extend on both sides at the end up to the cylindrical wall 37.

(16) The production is executed so that a thickening is provided once and an indexing jump is provided once, on the sprue side at the sprue A and diametrically opposing (therefore on the washboard side W).

(17) The disclosure is not restricted in its embodiment to the above-specified preferred exemplary embodiments. Rather, a number of variants is conceivable that make use of the illustrated solution according to the disclosure even in embodiments configured fundamentally differently.

(18) The foregoing description of the embodiments has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but, where applicable, are interchangeable and can be used in a selected embodiment, even if not specifically shown or described. The same may also be varied in many ways. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.