Abstract
A jet former, including an impeller wheel rotatably mounted about an axis of rotation, having a blade arrangement, a control device, and at least one movably mounted nozzle. The control device is arranged and constructed to convert a rotation of the axis of rotation into a movement of the at least one nozzle. At least one blade of the blade arrangement is arranged and formed to divide the water flow directed towards the at least one blade in a direction of flow into at least a first partial flow and a further partial flow, to deviate the first partial flow in a first partial flow direction, and to deviate the other partial flow in a further partial flow direction. The direction of flow, the first partial flow direction and the further partial flow direction in each case differ from each other.
Claims
1. A shower head comprising: a shower head housing; and a jet former accommodated in the shower head housing, the jet former comprising: an impeller wheel rotatably mounted about a shaft that forms an axis of rotation, the impeller wheel having a blade arrangement, wherein at least one blade of the blade arrangement is arranged and configured to: divide a water flow directed towards the at least one blade in a direction of flow into at least a first partial flow and a further partial flow; deviate the first partial flow in a first partial flow direction; and deviate the further partial flow in a further partial flow direction, wherein the direction of flow, the first partial flow direction, and the further partial flow direction differ from one another, wherein a front face of the shower head housing, through which the water flow exits the shower head, remains stationary with respect to the impeller wheel, such that the impeller wheel rotates relative to the front face of the shower head housing.
2. The shower head according to claim 1, wherein the at least one blade comprises: a blade bottom surface; and a flow divider, wherein the flow divider is arranged and formed to divide the water flow directed towards the at least one blade in the direction of flow into the first partial flow and the further partial flow.
3. The shower head according to claim 2, wherein a cross section of the blade bottom surface in a cross sectional plane through the blade bottom surface in parallel with the axis of rotation is not curved.
4. The shower head according to claim 2, wherein a cross section of the flow divider, in a cross sectional plane through the flow divider perpendicular with the axis of rotation, is curved.
5. The shower head according to claim 1, wherein the at least one blade of the blade arrangement is arranged and formed to; deviate the first partial flow by a first deflection angle in a range of 45 to 180° in the first partial flow direction; or deviate the further partial flow by a further deflection angle in a range of 45 to 180° in the further partial flow direction; or both.
6. The shower head according to claim 1, wherein the housing includes at least one intake nozzle, wherein the at least one intake nozzle is arranged and adapted for the water flow to be directed towards the impeller wheel in the direction of flow.
7. A device comprising the shower head according to claim 1, wherein the shower head is water-conductively connected to a mixing device to mix water of at least two different temperatures.
8. A shower comprising the shower head according to claim 1.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitive of the present invention, and wherein:
(2) FIG. 1 is a schematic representation of a jet former according to the invention;
(3) FIG. 2 is a schematic representation of an impeller wheel according to the invention;
(4) FIG. 3 is a schematic representation of a water flow against a blade of the inventive impeller wheel of FIG. 2;
(5) FIG. 4 is a schematic representation of a shower head according to the invention;
(6) FIG. 5 is a schematic representation of a device according to the invention;
(7) FIG. 6 is schematic representation of a sanitary shower according to the invention; and
(8) FIG. 7 is a flow chart of a method according to the invention.
DETAILED DESCRIPTION
(9) FIG. 1 shows a schematic representation of a jet former 100 of the present invention. The jet former 100 is an assembly for a sanitary shower head 400. The jet former 100 includes an impeller wheel 101 rotatably mounted about a shaft 102 that forms an axis of rotation 102a, having a blade arrangement; a reduction gear 104, which is a planetary gear; a control device; and a plurality of movably arranged jet forming nozzles. The control device is a cam gear, which includes a cam disc. The reduction gear 104 is connected to the shaft 102 on the drive side and to the control device on the output side to transmit power. The control device is arranged and configured to convert the rotation of the shaft 102 transmitted through the reduction gear 104 into a periodic movement of the plurality of movably arranged jet forming nozzles. The blade arrangement of the impeller wheel 101 is composed of a plurality of blades 103. The blades 103 are each disposed and configured to divide a water flow 301 directed towards the respective blade 103 in a direction of flow 301 into a first partial flow 302 and a further partial flow 303; to deviate the first partial flow 302 in a first partial flow direction 302; and to deviate the further partial flow 303 in a further partial flow direction 303. Here, the direction of flow 301 is at an angle of 90° to the axis of rotation 102a, since the water flow 301 tangentially flows against the impeller wheel 101. The first partial flow direction 302 and the further partial flow direction 303 are each in parallel with the axis of rotation 102a. Further, the first partial flow direction 302 and the further partial flow direction 303 are oppositely directed. Thus, the blades 103 are adapted to deviate the first partial flow 302 by a first deflection angle of 90° and the further partial flow 303 by a further deflection angle of 90°. An illustration of the directions can be seen in FIG. 3. The jet former 100 further includes an intake nozzle 105 with a nozzle opening 106. The intake nozzle 105 is arranged and formed for the water flow 301 to be directed towards the impeller wheel 101 in the direction of flow 301.
(10) FIG. 2 shows a schematic representation of an impeller wheel 101 according to the invention. The impeller wheel 101 of FIG. 2 is the impeller wheel 101 of the jet former 100 of FIG. 1. The impeller wheel 101 is made of plastic and is produced in one piece. Further, the impeller wheel 101 has a diameter of 32 mm. Each of the blades 103 of the impeller wheel 101 includes a blade bottom surface 201 and a flow divider 202. Here, the flow divider 202 is arranged and formed to divide the water flow 301 directed towards the respective blade 103 in the direction of flow 301 into the first partial flow 302 and the further partial flow 303. For this purpose, the flow divider 202 is designed as a divider wall arranged on the blade bottom surface 201. This divider wall tapers in the direction from the blade bottom surface 201 to an edge 203 of the divider wall. The divider wall is centered on the blade bottom surface 201 and can also be referred to as the center blade. A cross section of the blade bottom surface 201 of each blade 103 in a cross sectional plane through the blade bottom surface 201 perpendicular to the axis of rotation 102a is curved. Here, the cross section of the blade bottom surface 201 in the cross sectional plane through the blade bottom surface 201 perpendicular to the axis of rotation 102a is curved away from the axis of rotation 102a. Further, each cross section of the blade bottom surface 201 in each cross sectional plane through the blade bottom surface 201 in parallel with the axis of rotation 102a is a straight line.
(11) FIG. 3 shows a schematic representation of a blade 103 of the inventive impeller wheel 101 of FIG. 2 receiving an inflow of water. Here it can be seen how the water flow 301 is direct towards a blade 103 in the direction of flow 301. The flow divider 202 divides the water flow 301 into the first partial flow 302 and the further partial flow 303. The first partial flow 302 is deviated by 90° in the first partial flow direction 302 by means of the flow divider 202 and the blade bottom surface 201. The further partial flow 303 is deviated by 90° into the further partial flow direction 303 by means of the flow divider 202 and the blade bottom surface 201. In this case, the first partial flow direction 302 and the further partial flow direction 303 are in parallel with the axis of rotation 102a of the impeller wheel 101 and perpendicular to a plane of the impeller wheel 101. The direction of flow 301 is perpendicular to the axis of rotation 102a and lies in the plane of the impeller wheel 101.
(12) FIG. 4 shows a schematic representation of a shower head 400 according to the invention. The shower head 400 is a sanitary shower head 400, in this case a massage shower head designed as a hand-held shower head, which includes a housing 401. The housing 401 contains the jet former 100 of FIG. 1.
(13) FIG. 5 shows a schematic representation of an inventive device 500. The device 500 contains the shower head 400 of FIG. 4. The shower head 400 is connected in a water-conducting manner via a flexible shower hose 502 to a mixing device 501 for the purpose of mixing water of at least two different temperatures. The mixing device 501 is a sanitary mixer tap.
(14) FIG. 6 shows a schematic representation of a sanitary shower 600 according to the invention. The sanitary shower 600 includes a shower head 400 formed as an overhead shower head. The shower head 400 includes the jet former 100 as shown in FIG. 1.
(15) FIG. 7 shows a flow chart of a method 700 according to the invention. The method 700 is a method 700 for injection molding of the impeller wheel 101 of FIG. 2. For this purpose, the method 700 includes a process step a) 701: the provision of a starting material, in this case a plastic granulate. In a process step b) 702, the plastic granules are melted in an injection molding machine, i.e., plasticized. In one process step c) 703, the melted plastic is injected under pressure into an injection molding tool. The injection molding tool in this case includes a two-part negative mold of the impeller wheel 101 of FIG. 2, into which the melted plastic is injected. In a process step d) 704, the plastic is cooled and solidified. In a process step e) 705, the two-part negative mold is opened by separating the parts and the solidified plastic is removed from the mold. The impeller wheel 101 of FIG. 2 is obtained.
(16) The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are to be included within the scope of the following claims.
