SUBMERSIBLE AGITATOR DEVICE FOR CIRCULATING DRINKING WATER

Abstract

A submersible agitator device for circulating drinking water includes a submersible motor including a cylindrical housing, from one end of which there extends a shaft, a hyperboloid agitator mounted on the shaft, a frame with a plurality of supports extending along the housing and connected to the housing, wherein the supports have radially outwardly angled bend portions, which extend over a peripheral edge of the hyperboloid agitator body in order to support the frame on a base, and a flow-guiding element, which is annular in plan view and which is mounted on the bend portions of the supports.

Claims

1-8. (canceled)

9. A submersible agitator device for circulating drinking water, comprising a submersible motor comprising a cylindrical housing (1), from one end of which there extends a shaft (3), a hyperboloid agitator (5) mounted on the shaft (3), a frame (2) with a plurality of supports (4) extending along the housing (1) and connected to the housing (1), wherein the supports (4) have radially outwardly angled bend portions (6), which extend over a peripheral edge (U) of the hyperboloid agitator body (5) in order to support the frame (2) on a base, a flow-guiding element (8), which is annular in plan view and which is mounted on the bend portions (U) of the supports (4), wherein transport ribs (9) are provided on an upper side of the hyperboloid agitator body (5) facing the submersible motor and extend in the radial direction and bend towards the peripheral edge (U) in a first tangential direction and wherein, in a plan view of the upper side of the hyperboloid agitator element (5), the bend portions (U) of the supports (4) bend in a second tangential direction opposite the first tangential direction.

10. The submersible agitator device according to claim 9, wherein the flow-guiding element (8) tapers conically in the direction of the housing (1).

11. The submersible agitator device according to claim 9, wherein the frame (2) comprises precisely three supports (4).

12. The submersible agitator device according to claim 9, wherein the supports (4) are connected to one another by means of a connection element (10) at another end of the housing (1) opposite the shaft-side end.

13. The submersible agitator device according to claim 9, wherein the hyperboloid agitator body (5) is made from stainless steel in one piece with the transport ribs (9) in the form of a cast part.

14. The submersible agitator device according to claim 9, wherein the housing (1), the flow-guiding element (8) and the frame (2) is made from stainless steel.

Description

[0019] An exemplary embodiment of the invention will be explained hereinafter with reference to the drawings, in which:

[0020] FIG. 1 shows a perspective view of a submersible agitator device,

[0021] FIG. 2 shows a side view according to FIG. 1,

[0022] FIG. 3 shows a plan view according to FIG. 1, and

[0023] FIG. 4 shows a view from below according to FIG. 1.

[0024] In the case of the submersible agitator device shown in the drawings a submersible motor is mounted on a frame, denoted generally by reference sign 2. A shaft 3 extends from the submersible motor, which has a cylindrical housing 1. A hyperboloid agitator body 5 is mounted on the shaft 3. Such a hyperboloid agitator body 5 is known for example from DE 10 2013 225 658 A1.

[0025] The frame 2 comprises a plurality of supports 4 extending along the housing 1 and connected to the housing 1. The supports 4 extend over the housing 1 in the direction of the hyperboloid agitator body 5. The supports 4, in a portion situated above the hyperboloid agitator body 5, have radially outwardly angled bend portions 6. The bend portions 6 extend over a peripheral edge U of the hyperboloid agitator body 5 and at their end each have a foot 7 for supporting the frame 2 on a base.

[0026] A flow-guiding element 8, which is annular in plan view, is supported on the bend portions 6. The flow-guiding element 8 is fixedly connected to the bend portions 6, for example by means of welding.

[0027] The hyperboloid agitator body 5 has transport ribs 9 on an upper side facing the housing 1. The hyperboloid agitator body 5 is expediently produced from stainless steel in one piece with the transport ribs 9 in the form of a cast part.

[0028] The transport ribs 9 extend along the surface of the hyperboloid agitator body 5 firstly in a radial direction, starting from the shaft 3. They then bend towards the peripheral edge U in a first tangential direction.

[0029] As can be seen in particular from FIG. 3, in a plan view of the upper side of the hyperboloid agitator body 5, the bend portions 6 of the supports 4 bend in a second tangential direction, opposite the first tangential direction. The flow-guiding element 8 tapers conically in the direction of the housing 1. Reference sign 10 denotes a connection element, which connects the supports 4 to one another at another end of the housing 1, opposite the shaft-side end. A cable for lifting and lowering the submersible agitator device can be mounted on the connection element 10.

[0030] The function of the submersible agitator device is as follows:

[0031] The hyperboloid agitator body 5 is rotated in a clockwise direction by means of the submersible motor. Consequently, a flow forms which is directed towards the upper side of the hyperboloid agitator body 5. The flow passes through the flow-guiding element 8. It is deflected in a radial direction by the action of the flow-guiding element 8 and the effect of the hyperboloid agitator body 5. The flow from the peripheral edge U likewise circulates in a clockwise direction. Due to the bend of the bend portions 6 provided in a second tangential direction, the flow encounters only a very low resistance over its path. Due to the effect of the flow-guiding element 8, the formation of spiralled vortices is avoided. Drinking water can be circulated in a drinking water container with improved efficiency by means of the proposed submersible agitator device. Due to the embodiment proposed in accordance with the invention, less electrical energy than in conventional submersible agitator devices is required for the circulation.

LIST OF REFERENCE SIGNS

[0032] 1 housing [0033] 2 frame [0034] 3 shaft [0035] 4 support [0036] 5 hyperboloid agitator body [0037] 6 bend portion [0038] 7 foot [0039] 8 flow-guiding element [0040] 9 transport rib [0041] 10 connection portion [0042] U peripheral edge