Stirring device

Abstract

The invention relates to a stirring device (10a, 10b, 10c, 10d, 10e), which is particularly used for mixing a fluid with at least one other fluid, the stirring device having at least one fluid dispersion unit (14a, 14b, 14c, 14d, 14e) rotatable about a rotation axis (12a, 12b, 12c, 12d, 12e), the fluid dispersion unit having at least one outlet opening (16a, 16b, 16c, 16d, 16e) for discharging at least one fluid. The invention proposes that the stirring device (10a, 10b, 10c, 10d, 10e) has at least one optimization unit (18a, 18b, 18c, 18d, 18e), which increases at least one pressure difference at the outlet opening (16a, 16b, 16b, 16a, 16b, 11b) in at least one operating state.

Description

Technical Field

[0001] The invention relates to a stirring device. Background Art

[0002] A stirring device is known from EP 0 993 862 A2, which disperses a gas in a liquid. In this case, the gas is sucked in through a hollow shaft and enters the liquid radially through an outlet opening.

[0003] In addition, EP 1 243 313 A2 discloses a stirrer and a method for mixing a gas with a liquid or a liquid with another liquid, wherein the stirrer has a hollow shaft for sucking in the gas or liquid to be mixed, and starts the suction process by generating a negative pressure difference, and transmits the gas or liquid to be mixed to the outside through an outlet opening.

[0004] It is an object of the present invention in particular to provide a universal device with improved dispersing properties. This object is achieved by one aspect of the present invention, while advantageous refinements and developments of the present invention can be obtained in another aspect of the present invention. Summary of the invention

[0005] The present invention provides a stirring device, which is particularly used to mix a fluid with at least one other fluid and / or particularly used to disperse a fluid in at least one other fluid, and has at least one fluid dispersion unit that can rotate around a rotation axis and has at least one outlet for discharging at least one fluid.

[0006] It is proposed that the stirring device has at least one optimization unit which increases at least one pressure difference at the outlet in at least one operating state, in particular in at least one operating state in which the fluid dispersing unit has a fixed rotational speed.

[0007] This can advantageously improve the dispersibility. Particularly advantageously, the mass transfer (Stoffübergang) of a fluid, in particular as a dispersed phase, to another fluid, in particular as a dispersant, can be optimized. The dispersibility can advantageously be increased. In particular, a homogeneous dispersion can be produced. In addition, several fluids, in particular in the form of different phases, in particular liquid phases, can be mixed with one another. In addition, the phase interface between the fluid and other fluids can be increased. In particular, an optimized fluid flow can be produced by the stirring device, and in particular the interior of the stirring device. Preferably, the cost for producing the dispersion can be minimized. Maintenance and / or running costs can be advantageously minimized. In addition, the cost of energy and / or materials and / or raw materials can be minimized. Chemical reactions and / or reaction rates of chemical reactions between a fluid or at least one component of a fluid and other fluids or at least one other component with other fluids can be advantageously promoted and / or improved.

[0008] "Stirring device" is to be understood in particular to mean parts, in particular functional parts, in particular structural and / or functional parts, of a stirrer, such as a mixer and / or a disperser and / or a stirrer system. The stirring device may in particular comprise the entire stirrer. Particularly advantageously, the stirring device is configured to rotate around an axis of rotation, in particular an axis of rotation of the fluid dispersion unit, in particular during a stirring process and / or a mixing process and / or a dispersion process. Preferably, when viewed along the axis of rotation, the fluid dispersion unit and in particular the stirring device are point-symmetrical, in particular with respect to the longitudinal extension of the axis of rotation. In the assembled state, the axis of rotation advantageously extends parallel to the vertical direction, preferably in particular in the direction of the acting gravity in the normal operating state of the stirrer, wherein the vertical direction preferably extends perpendicular to the ground.

[0009] An "outlet opening" is to be understood in particular as an opening at which the fluid in the operating state flows out of the fluid dispersing unit and / or is conveyed out of the fluid dispersing unit, whereby in particular a dispersing process is started. In particular, the outlet opening has a quadrilateral and advantageously a rectangular shape in a viewing direction at least substantially perpendicular to a main extension plane of the outlet opening. Alternatively, the outlet has a polygonal, elliptical, circular or semicircular shape in a viewing direction at least substantially perpendicular to a main extension plane of the outlet opening.

[0010] A "fluid dispersion unit" is to be understood in particular as a unit which, in the operating state, advantageously directly distributes and / or disperses a fluid, in particular in the form of a dispersed phase, into another fluid, which in particular serves as a dispersant, in particular by using energy, in particular by stirring, shaking, beating, injecting and / or in particular by sound vibrations.

[0011] In particular, the fluid dispersion unit has at least one dispersion wing, which in particular has an outlet opening. In particular, the dispersion wing is curved, in particular in the plane of rotation of the fluid dispersion unit. The dispersion wing advantageously extends radially outwards from a region close to the center of the fluid dispersion unit. In particular, the dispersion wing is hollow, thereby defining at least one fluid channel. In particular, the dispersion wing is formed integrally with a stirring blade connected to the stirrer. The dispersion wing is advantageously designed as a stirring blade.

[0012] Advantageously, the orientation of the main extension plane of the outlet opening is at least substantially opposite to the direction of rotation of the fluid dispersion unit in at least one operating state of the fluid dispersion unit. In this case, "at least substantially opposite" is to be understood in particular as meaning that the surface normal of the plane or the main extension plane of the unit is at an angle to the reference direction, which angle deviates from 180° in particular by less than 25%, preferably by less than 10%, particularly preferably by less than 5%. In particular, the outlet direction of the fluid from the outlet opening corresponds at least substantially to the direction of the surface normal. "Orientation" of the plane and / or surface of the unit in a determined manner particularly means the direction of the surface normal of the plane and / or surface and / or the main extension plane of the unit, wherein the surface normal is particularly arranged on the outside of the unit. A "main extension plane" of an object, in particular an opening and / or a unit is to be understood in particular as a plane which is parallel to the largest side of a smallest imaginary cuboid which just completely encloses the object and which extends in particular through the center of the imaginary cuboid.

[0013] In the operating state, the fluid dispersion unit is advantageously completely immersed in the other fluid. In particular, the stirring device has a stirring shaft, which is advantageously designed as a hollow shaft. The stirring shaft is advantageously parallel to the axis of rotation, in particular the axis of rotation extending in the stirring shaft. In the operating state, the fluid dispersion unit is particularly arranged in a rotationally fixed manner on the stirring shaft, and is particularly connected to the stirring shaft fluid. In particular, the fluid dispersion unit is arranged on the stirring shaft by a force-fitting and / or shape-fitting connection, wherein the connection can be a flange, a welding and / or a shrink connection (Schrumpfverbindung). In particular, the stirring shaft has at least one inlet opening. The stirring shaft advantageously has a plurality of inlet openings. "The inlet opening of the stirring shaft" is particularly to be understood as an opening through which the fluid enters and / or is sucked into the stirring shaft. The stirring shaft can be driven to rotate in particular by a motor, advantageously by a motor of the stirring device. In particular, the stirring shaft is oriented parallel to the acting gravity in the operating state. In the operating state, the dispersion wing is preferably in fluid communication with the stirring shaft. In particular, the inlet opening and the outlet opening are fluidly connected to each other. In particular, the optimization unit has at least one profile unit, which is configured, in particular, to promote the entry of the fluid at least into the inlet opening. The profile unit is in particular arranged on the agitator shaft. The profile unit in particular has at least one profile element, which is advantageously assigned to one of the inlet openings. In particular, at least one profile element is assigned to each inlet. The profile element is advantageously designed as a guide plate.

[0014] An "optimization unit" is to be understood in particular as a component of a stirring device having a functional structure and / or function, which in the operating state, in particular in comparison with a corresponding stirring device without the optimization unit, influences and advantageously promotes a dispersion process, in particular at least substantially carried out by the fluid dispersion unit, and / or increases the efficiency of the dispersion process and / or the fluid dispersion unit. The optimization unit advantageously has a plurality of components, which in the operating state can in particular influence the dispersion process in different ways, in particular independently of one another. In the operating state, the optimization unit can in particular influence the flow behavior of the fluid and / or the other fluid. In particular, the optimization unit advantageously increases the pressure difference at the outlet opening in the operating state, in particular the pressure difference between the internal pressure existing in front of the outlet opening and the external pressure existing behind the outlet opening, by means of geometric structures and / or geometric construction elements, in particular in the case of a constant range of the fluid dispersion unit, for example in the case of a constant diameter of the fluid dispersion unit and / or a constant range of the outlet opening.

[0015] "Pressure difference" is to be understood in particular as meaning the pressure difference between the internal pressure and the external pressure in the operating state, in particular at a determined rotational speed. In particular, the internal pressure is present in the interior of the fluid dispersion unit, in particular immediately in front of the outlet opening. The internal pressure is in particular equal to the difference between the fluid pressure at the inlet opening of the stirring shaft and the pressure loss, in particular caused by friction and / or the formation of flow vortices, in particular by the pressure loss inside the stirring shaft and inside the fluid dispersion unit. In particular, the external pressure is present outside the fluid dispersion unit immediately behind the outlet opening, in particular in the dispersion area. "Dispersion area" is to be understood in particular as the area around the fluid dispersion unit, in which at any point in time in the operating state at least a large part of the mixing of the fluid with the other fluids and / or the dispersion process of the fluid in the other fluids and / or the chemical reaction between the fluid or at least one component of the fluid and at least one component of the other fluid or other fluids is achieved. The expression "at least a large part" is to be understood as meaning in particular at least 55%, advantageously at least 65%, preferably at least 75%, particularly preferably at least 85%, particularly advantageously at least 95%. "Fluid" and "other fluids" are to be understood in particular to mean a gas or a gas mixture and / or a liquid or a liquid mixture, and / or a gas-liquid mixture and / or a solid-liquid mixture or a gas-solid-liquid mixture. In particular, the fluid and / or the other fluid may be present in a two-phase or three-phase mixture or in a two-phase or three-phase dispersion. In particular, the fluid and / or the other fluid may be present in the form of an emulsion. In particular, the fluid is to be understood as a dispersed phase and the other fluid is to be understood as a dispersant. The fluid is advantageously gaseous. Advantageously, the other fluid is a liquid, which is formed in a gas-liquid mixture or in a solid-liquid mixture or in a gas-solid-liquid mixture. Advantageously, the other fluid is formed in a suspension, which may in particular have at least one solid, which may in particular be formed as a catalyst. In particular, the solid at least partially promotes and / or enhances the interaction, such as chemical interaction and / or reaction, of at least one component of the first fluid with at least one other component of the other fluid. In particular, the fluid or at least one component of the fluid reacts at least partially with the other fluid or with at least one other component of the other fluid in a chemical reaction. In particular, the fluid and the other fluid may each comprise a multi-liquid mixture, in which a solid, in particular a catalyst, is dispersed and / or distributed. For example, the listed fluid may be a solid-liquid mixture, and the other fluid may be a solid-liquid-liquid mixture having two other liquids and a solid, the two liquids forming a two-phase mixture. "Configuration" should in particular be understood as specially designed and / or equipped. "An object configured to a specific function" should in particular be understood as meaning that the object realizes and / or performs the specific function in at least one application and / or operating state.

[0016] It is further proposed that the optimization unit has at least one external pressure optimization unit, which reduces at least one external pressure that reacts on the fluid discharge in the operating state and in particular at a fixed rotational speed. Therefore, in particular, the outflow of the fluid from the outlet opening can be promoted and advantageously increased. In particular, the volume flow through the outlet opening under unchanged ambient conditions is proportional to the pressure difference, which depends in particular on the external pressure. In particular, the external pressure optimization unit reduces the external pressure at a fixed rotational speed of the stirring device, in particular by means of geometric structures and / or geometric construction elements. In particular, the external pressure optimization unit affects the external fluid flow, which flows in particular around the fluid dispersion unit in the dispersion area and in particular around the dispersion wings.

[0017] In particular, the dispersion wing has an outer wall which is at least substantially oriented in the direction of rotation. The unit is "at least substantially oriented in the direction of rotation" to be understood here in particular to mean that the surface normal of the main extension plane of the unit has an angle with the direction of rotation, in particular with a tangent to the direction of rotation, which is advantageously less than 90°, advantageously less than 45°, preferably less than 20°, particularly advantageously less than 10°.

[0018] It is further proposed that the fluid dispersion unit has a further outlet opening for the discharge of at least one further fluid, which further outlet opening is arranged before the outlet opening when viewed in the direction of rotation of the fluid dispersion unit, wherein the optimization unit, advantageously the external pressure optimization unit, in the operating state, in particular reduces the influence of the discharge of at least one fluid by the discharge of the further fluid at a fixed rotation speed. In particular, the fluid dispersion unit has at least one further dispersion wing, which in particular has a further outlet opening. The dispersion wing and the further dispersion wing advantageously have the same design and can be made to coincide, in particular by rotating the fluid dispersion unit around the rotation axis. The outlet opening and the further outlet opening advantageously have the same design and can be made to coincide, in particular by rotating the fluid dispersion unit around the rotation axis. In particular, the outlet opening and the further outlet opening form a dispersion chamber. In particular, two consecutive outlet openings form a dispersion chamber. The number of dispersion units is equal to the number of outlet openings. In particular, the fluid dispersion unit can have more than two outlet openings. The outlet openings advantageously have an angular distance from each other, which is the same value between the respective closest outlet openings on the circumference. If n is the number of outlet openings of the fluid dispersion unit, the angular distance is in particular 360 ° / n. Therefore, the distribution of the fluid in the other fluid can be increased in particular. This saves time in particular when a mixture and / or dispersion and / or chemical reaction is produced. In particular, the other outlet openings can be arranged relative to the axis of rotation to be offset in height relative to the outlet opening. Alternatively or additionally, the outlet opening and the other outlet can be at least partially oppositely oriented relative to the rotation plane. Advantageously, the outlet opening can be at least mostly oriented above the rotation plane, while the other outlet openings are at least mostly oriented below the rotation plane, and vice versa. Therefore, the dispersion area can be particularly enlarged. Advantageously, the external fluid flow generated by the external pressure optimization unit in the operating state washes away at least one vortex, which is particularly at least partially generated due to the outflow of the fluid from the outlet opening, and in particular as the other outlet openings spread to the outer wall of the dispersion wing, in particular, the external pressure is adversely affected, in particular, the external pressure is increased, wherein the vortex formation particularly leads to a decrease in the average density on the outer wall.

[0019] In particular, the fluid dispersion unit and the optimization unit, in particular the external pressure optimization unit, can be designed differently from one another. This can in particular allow for simple assembly and / or manufacturing. In addition, flexibility for different mixing and / or dispersion conditions can be achieved in this way by simply replacing the fluid dispersion unit and / or the optimization unit, in particular the external pressure optimization unit. In particular, the external pressure optimization unit is at least partially arranged on the stirring shaft, in particular below the fluid dispersion unit, advantageously immediately below the fluid dispersion unit, in particular in a rotationally fixed manner. The terms "above", "below" and "above" and "below" here particularly refer to the positioning of the stirring device in at least one operating state.

[0020] It is also conceivable that the fluid dispersion unit and the optimization unit, in particular the external pressure optimization unit, are at least partially formed integrally with one another, whereby the manufacturing costs can advantageously be minimized and a stable structure can be achieved in particular. The two units are "partially formed integrally" in particular to be understood as meaning that the units have at least one, in particular at least two, advantageously at least three common elements, which are in particular functionally important components of the two units. In particular, the term "integral" can here mean at least integrally connected, for example by a welding process, an adhesive process, an injection molding process and / or other processes useful to a person skilled in the art, and / or advantageously means formed in one piece, for example by advantageously manufacturing from a single blank by casting, and / or by single-component or multi-component injection molding, advantageously by 3D printing.

[0021] It is further proposed that the optimization unit and in particular the external pressure optimization unit generates at least one external fluid flow in the operating state, which is oriented at least substantially parallel to the axis of rotation of the fluid dispersion unit in at least one flow section. The optimization unit, in particular the external pressure optimization unit, advantageously generates an external fluid flow that reduces the external pressure, thereby particularly increasing the local average density of the other fluid in the area near the outer wall. In particular, the external fluid flow is generated at least partially below the fluid dispersion unit. In particular, the optimization unit, in particular the external pressure optimization unit, transports the other fluid from an area away from dispersion to the dispersion area. Thus, the other fluid, in particular the catalyst, can be advantageously transported from an area away from dispersion to the dispersion area, thereby particularly optimizing the mixing and / or dispersion and / or chemical reaction and / or the reaction rate of the chemical reaction. Advantageously, the external fluid flow is at least mostly oriented from bottom to top, in particular oriented in opposition to gravity. Therefore, the fluid flowing out by the fluid discharge can be particularly promoted and advantageously increased. In an area far from the dispersion, in particular, the mixing of the fluid with the other fluid at any time point in the operating state is less than 50% of the total mixing, and / or the dispersion process of the fluid in the other fluid is less than 50% of the overall dispersion, and / or the chemical reaction between the fluid or at least one component of the fluid and the other fluid or at least one component of the other fluid at any time point in the operating state is less than 50% of the total reaction. In particular, the separation of the fluid and the other fluid occurs at least partially in an area far from the dispersion.

[0022] If the optimization unit, in particular the external pressure optimization unit, has at least one blade that can rotate about the rotation axis of the fluid dispersion unit to at least partially generate an external fluid flow, a particularly comprehensive and effective mixing and / or dispersion and / or an optimized chemical reaction and / or an increased reaction speed of the chemical reaction can be achieved. In particular, the main extension plane of the blade is inclined relative to the vertical direction. The blade advantageously has a curved shape. In particular, the blade circulates the other fluid. The optimization unit, in particular the external pressure optimization unit, advantageously has at least one other blade. In particular, the total number of blades and other blades is equal to the number of outlet openings. The individual blades preferably have blade angular distances that are consistent with each other. In particular, the blade angular distance is equal to the angular distance. Alternatively, the total number of blades can be different from the number of outlet openings, for example, different from the number of outlet openings by a factor of 2. In particular, the total number of blades can exceed the number of outlet openings, in particular by a factor of 2, wherein the angular distance has a greater value than the blade angular distance, in particular twice the blade angular distance. In particular, the blade and the other blade have the same design. Advantageously, all blades have the same design. The optimization unit, in particular the external pressure optimization unit, is advantageously designed in the form of a turbine.

[0023] It is also proposed to assign the blades to the outlet openings. Thus, in particular, the formation of vortices on the outer wall, advantageously on each outer wall, can be effectively prevented. Advantageously, exactly one blade is assigned to exactly one outlet opening. Alternatively, a plurality of, in particular two blades, can be assigned to exactly one outlet opening. In particular, the blade and / or the plurality of blades can be arranged relative to the outlet opening so that the external fluid flow generated at least in part by the blade and / or the plurality of blades advantageously flows directly around the outer wall. In particular, the blade and / or the plurality of blades and the outlet openings assigned to the blade and / or the plurality of blades rotate at the same angular velocity in the operating state. In this way, a constant and / or constant external fluid flow can be generated.

[0024] It is also proposed that the blades are arranged offset relative to the outlet opening, in particular offset downwards, viewed along the axis of rotation. Advantageously, the blades are arranged immediately below the fluid dispersion unit. In particular, the blades can be arranged at an angle relative to the outlet opening. In this way, in particular, an advantageous flow against the outer wall of the dispersion wing can be achieved, in particular to avoid the formation of eddies. In addition, an optimized circulation of other fluids, in particular catalysts, can be advantageously achieved, thereby optimizing the mixing process and / or dispersion process and / or chemical reaction and / or reaction rate of the chemical reaction between the fluid or at least one component of the fluid and the other fluid or at least one component of the other fluid.

[0025] It is further proposed that the optimization unit, in particular the external pressure optimization unit, has at least one flow-guiding element, which is used to deflect the external fluid flow, in particular completely deflect it into a direction at least substantially perpendicular to the axis of rotation of the fluid dispersion unit. In this way, in particular, vortex formation can be at least substantially completely prevented on the outer wall of the dispersion wing. The flow-guiding element is advantageously arranged above the dispersion wing. The flow-guiding element is particularly designed as a concentric, closed disk, the center of which passes through the axis of rotation. In particular, after the deflection, the external fluid flow at least partially flows through the flow element, advantageously flowing radially outward at least substantially along the outer wall of the dispersion wing. The flow-guiding element is designed as a passive component. Alternatively, the flow-guiding element can be configured as an active component, wherein the external fluid flow can be particularly influenced, in particular depending on the rotation speed of the fluid dispersion unit.

[0026] It is further proposed that the optimization unit has at least one internal pressure optimization unit, which increases at least one internal pressure that is favorable for the discharge of the fluid in the operating state. In this way, in particular, the volume flow of the fluid through the outlet opening can be increased. In particular, the internal pressure optimization unit is at least partially and advantageously completely arranged inside the stirring shaft and / or the fluid dispersion unit. The internal pressure optimization unit is advantageously molded and / or designed as a geometric construction element. In particular, the internal pressure optimization unit is formed integrally with the fluid dispersion unit. The internal pressure optimization unit advantageously reduces pressure losses, which are particularly generated inside the stirring shaft and / or the fluid dispersion unit and reduce the internal pressure.

[0027] It is further proposed that the optimization unit, in particular the internal pressure optimization unit, has at least one fluid conveying unit, which can in particular be at least partially integrated with the internal pressure optimization unit and produces an optimized, in particular at least largely eddy-free internal fluid flow in the operating state. In particular, this can produce a uniform internal fluid flow. In addition, the reduction in the pressure difference caused by the uneven internal fluid flow can be reduced in particular. The fluid conveying unit is advantageously connected to the fluid dispersion unit in a rotationally fixed manner. In particular, in the operating state, the internal fluid flow flows from the stirring shaft in the direction of the fluid channel of the dispersion wing and then flows from the fluid dispersion unit through the outlet opening into the dispersion area. The fluid conveying unit is advantageously designed in the form of a turbine. The fluid conveying unit is particularly arranged in the center of the fluid dispersion unit.

[0028] In order to be able to optimize the conveying of the fluid in the direction of the dispersion area, it is proposed that in the operating state the fluid conveying unit conveys the fluid at least partially radially outwards from the area in the vicinity of at least one rotation axis of the fluid dispersion unit in the direction of the outlet opening. In particular, the fluid conveying unit advantageously converts an internal fluid flow oriented parallel to the rotation axis into an internal fluid flow oriented at least substantially radially in the direction of the fluid channel.

[0029] It is further proposed that the fluid conveying unit has at least one guide blade which has a curved shape and conveys the fluid in a region near the axis of rotation which is at least substantially parallel to the axis of rotation of the fluid dispersing unit. This allows in particular an advantageous conveying of the fluid from the agitator shaft into the fluid dispersing unit. The fluid dispersing unit advantageously has two, particularly advantageously more, guide blades. The number of guide blades is preferably equal to the number of outlet openings. In order to allow an optimized conveying of the fluid, the guide blades are in particular assigned to the fluid channels.

[0030] It is further proposed that the internal pressure optimization unit and / or the fluid delivery unit are completely arranged inside the fluid dispersion unit. This can make the structure compact. In particular, the fluid dispersion unit has a receiving space, in which the fluid delivery unit is arranged. The receiving space is particularly cylindrical on its side. In particular, the bottom of the receiving space has a centrally arranged conical protrusion. Advantageously, the fluid delivery unit is formed through the wall. In particular, the stirring shaft is fluidically connected to the receiving space. In particular, the receiving space and / or the transition area from the receiving space to the fluid channel is configured to be smooth and / or without edges. In this way, in particular the deposition and / or agglomeration of solid particles inside the receiving space can be avoided. In addition, this can in particular at least partially avoid the formation of eddies inside the receiving space. In addition, in particular, the in-situ cleaning capability of the receiving space can be achieved. The construction can thus in particular minimize maintenance costs.

[0031] It is also suggested that the surface of the fluid conveying unit in contact with the fluid is configured to be at least substantially smooth and / or without edges and corners. In this way, in particular the deposition and / or agglomeration of solid particles on the fluid conveying unit can be avoided. In addition, this can in particular at least partially reduce the eddy flow formation on the blades of the fluid conveying unit. In addition, in particular, the configuration of the in-situ cleanability of the fluid conveying unit can be achieved thereby, in particular, the maintenance costs can be minimized thereby.

[0032] It is further proposed that the fluid dispersion unit has at least one turbulence unit for influencing the discharge of the fluid and / or the discharge of the other fluid. In this way, the advantageous distribution of the fluid, in particular after discharge from the outlet opening and / or from the other outlet opening, can lead to a particularly increased exchange of substances from the fluid into the other fluid. In particular, the turbulence unit is at least partially and / or segmentally formed into a preferably completely spiral and / or spring shape. In addition, the turbulence unit can in particular have at least one, in particular curved, rod, which is advantageously arranged in the outer region of the stirring device, in particular in the circumferential direction of the fluid dispersion unit, in particular between the dispersion wings, when viewed along the axis of rotation of the fluid dispersion unit. In particular, the turbulence unit has at least one helical wire and / or helical spring, in particular a tension spring, which is advantageously arranged on the rod in at least one operating state and in particular wound on the rod so that it at least partially surrounds the rod. In particular, the helical wire and / or helical spring, in particular the tension spring, has a pretension in at least one operating state. Alternatively or additionally, the turbulence unit can be at least partially and / or segmentally formed into a grid shape. In particular, the turbulence unit is arranged in the outer area of ​​the stirring device, observed along the rotation axis of the fluid dispersion unit. In particular, the main extension plane of the turbulence unit is parallel to the main extension plane of the fluid dispersion unit, or advantageously overlaps. In particular, the turbulence unit is arranged between the dispersion wings. The turbulence unit is configured to promote the transition of the fluid to the other fluid by generating turbulence and / or shear force in the vicinity of the turbulence unit. In particular, in the case where the fluid exists in the gas phase, the turbulence unit advantageously reduces the diameter of the main bubbles emerging from the outlet opening and / or from other outlet openings. The turbulence unit particularly crushes the main bubbles generated from the outlet opening and / or from other outlet openings into a plurality of smaller bubbles, particularly by shear force. The "nearby area" of a cell is to be understood in particular as a spatial region which surrounds and in particular completely surrounds the cell, wherein the region has spatial points which are in particular not part of the cell but are in particular located within an imaginary sphere, each imaginary sphere having the point of the cell as center point and having a spherical radius which is in particular at least equal to the extension of the cell transversely to the main extension plane of the cell, advantageously at least twice, particularly advantageously at least three times, of the extension of the cell transversely to the main extension plane of the cell.

[0033] It is further proposed that the fluid dispersion unit has at least one circular tube arranged substantially perpendicular to the axis of rotation, on which an outlet opening is arranged. The fluid dispersion unit can have a plurality of, in particular at least two, advantageously at least three, particularly advantageously at least four, preferably at least five, particularly preferably at least six, circular tubes arranged substantially perpendicular to the axis of rotation, on each of which at least one outlet opening is arranged. In this way, a stirring device with improved dispersion characteristics can be advantageously provided. In particular, the dispersion performance can be advantageously improved. "Circular tube" is particularly to be understood as an element of the fluid dispersion unit, which has a circular and / or elliptical cross section when observed perpendicular to its main extension plane. The outlet opening is advantageously arranged in the region with the maximum distance from the axis of rotation of the fluid dispersion unit, and in particular has a circular and / or elliptical cross section. The longest outer edge of the circular tube can have a straight trajectory in the direction of the axis of rotation from the outlet opening. However, preferably, the trajectory of the longest outer edge of the circular tube in the direction of the axis of rotation from the outlet opening is curved in the opposite direction of the direction of rotation of the fluid dispersion unit.

[0034] It is further proposed that the fluid dispersion unit has the shape of an airfoil profile at least partially in at least one viewing direction perpendicular to the axis of rotation. Thus, advantageous flow characteristics of the other fluid, in particular the dispersant, can be achieved in the operating state of the stirring device. The fluid dispersion unit "has the shape of an airfoil profile at least partially in at least one viewing direction perpendicular to the axis of rotation" should particularly mean that the fluid dispersion unit has at least one region whose cross section has the shape of an airfoil profile in at least one viewing direction perpendicular to the axis of rotation of the fluid dispersion unit, wherein the main extension plane of the outlet opening is particularly located inside the cross section. "The shape of an airfoil profile" should particularly be understood to mean the geometry of a region of the fluid dispersion unit having at least one longest outer edge, whose trajectory has at least one curvature and / or arc with respect to the plane of rotation of the fluid dispersion unit, in particular asymmetric, when observed in a cross section perpendicular to the main extension plane of the fluid dispersion unit. The fluid dispersion unit can have a plurality of regions, each of which has the shape of an airfoil profile in at least one viewing direction perpendicular to the axis of rotation. Preferably, each dispersion chamber of the fluid dispersion unit has the shape of an airfoil profile in at least one viewing direction perpendicular to the axis of rotation. The fluid dispersion unit can be formed in one piece, for example by a single-component or multi-component injection molding process, advantageously by a 3D printing process. Thus, the airfoil profile shape of the fluid dispersion unit can be formed in a particularly simple technical manner and / or in a particularly cost-effective manner.

[0035] The stirring device according to the invention should not be limited to the above-mentioned applications and embodiments. In particular, the stirring device according to the invention may have a number of individual elements, components and units different from the number of individual elements, components and units specified herein for achieving the functions described herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Further advantages are obtained from the following description of the drawings. Embodiments of the invention are shown in the drawings. The drawings and the description contain a plurality of features in combination. It is convenient for a person skilled in the art to consider these features individually and combine them into other useful combinations.

[0037] In the attached picture:

[0038] Figure 1 is a side perspective view of a portion of a stirrer having a stirring device,

[0039] Figure 2 A schematic perspective view of a fluid dispersing unit of a stirring device and an optimization unit of a stirring device with a fluid conveying unit,

[0040] Figure 3 is an enlarged schematic diagram of a fluid delivery unit arranged in the receiving space of the fluid dispersion unit,

[0041] Figure 4 A schematic perspective view of a fluid dispersing unit of an alternative stirring device and an optimization unit of an alternative stirring device with a fluid conveying unit,

[0042] Figure 5 A schematic perspective view of a fluid dispersion unit of another alternative stirring device and an optimization unit of another alternative stirring device with a fluid delivery unit,

[0043] Figure 6 is a schematic perspective view of another embodiment of a fluid dispersion unit of a stirring device,

[0044] Figure 7 Schematic perspective views of other embodiments of the fluid dispersion unit of the stirring device, and

[0045] Figure 8 for Figure 7 Other schematic perspective views of a fluid dispersion unit of an exemplary embodiment of the invention. DETAILED DESCRIPTION

[0046] In the exemplary embodiments described below, different structural units and / or components appear multiple times. For simplicity, similarly constructed components and / or structural units having the same reference numerals in the drawings are only described once in the following description of the drawings.

[0047] Figure 1A portion of a stirrer 34a is shown. The stirrer 34a has a stirring device 10a. The stirring device 10a is provided to mix the fluid with other fluids. The stirring device 10a is provided for the dispersion of the fluid with other fluids. The fluid exists in the gas phase. The other fluid exists in the initial state of the liquid phase. In the operating state, the other fluid exists in a gas-liquid mixed phase.

[0048] The stirring device 10a has a stirring shaft 38a. In at least one operating state, the stirring shaft 38a rotates around the rotation axis 12a of the stirring device 10a. The stirring shaft 38a transmits torque and causes the elements arranged on the stirring shaft 38a to rotate. The stirring shaft 38a can be rotated by the motor 46a of the stirrer 34a.

[0049] The stirring shaft 38a is designed as a hollow shaft. The rotation axis 12a extends inside the stirring shaft 38a. The stirring shaft 38a is oriented parallel to the vertical direction. The stirring shaft 38a has a plurality of inlet openings 44a. The inlet openings 44a are arranged to suck in fluid in the operating state.

[0050] The stirring device 10a has a fluid dispersion unit 14a. The stirring shaft 38a is fluidically connected to the fluid dispersion unit 14a. The fluid dispersion unit 14a is arranged on the stirring shaft 38a in a rotationally fixed manner. The fluid dispersion unit 14a is arranged on the stirrer shaft 38a by force fit and / or form fit. The connection is a screw connection. The fluid dispersion unit 14a can rotate around the rotation axis 12a. The stirring shaft 38a and the fluid dispersion unit 14a have the same angular velocity in the operating state. In the operating state, the fluid dispersion unit 14a is completely immersed in the other fluid.

[0051] The fluid dispersion unit 14a has an outlet opening 16a. The outlet opening 16a has a rectangular shape when viewed perpendicularly to a main extension plane 68a of the outlet opening 16a. Alternatively, the outlet opening 16a may have an elliptical shape or a circular shape when viewed perpendicularly to a main extension plane 68a of the outlet 16a.

[0052] The fluid dispersing unit 14a has a further outlet opening 22a which is arranged in front of the outlet opening 16a, viewed in the rotational direction 36a of the fluid dispersing unit 14a.

[0053] The fluid dispersion unit 14a has four outlet openings 16a, 22a. The outlet openings 16a, 22a are respectively provided for fluid discharge. The fluid dispersion unit 14a has four dispersion wings 40a. Each of the four dispersion wings 40a defines one of the outlet openings 16a, 22a. The dispersion wings 40a are respectively configured as stirring blades.

[0054] In an operating state, when the fluid dispersion unit 14a is rotated in the rotation direction 36a, the outlet openings 16a, 22a are oriented in a direction opposite to the rotation direction 36a.

[0055] The outlet openings 16a, 22a each have the same angular distance from one another in the circumferential direction of the fluid dispersion unit 14a.

[0056] In the following, only one of the four dispersing wings 40a and one of the four outlet openings 16a, 22a will be described, wherein this description is intended to apply to all dispersing wings 40a and all outlet openings 16a.

[0057] The dispersion wing 40a is configured to bend in the plane of rotation of the fluid dispersion unit 14a. The dispersion wing 40a extends radially outward from a region near the center of the fluid dispersion unit 14a. The dispersion wing 40a is hollow. The dispersion wing 40a is in fluid communication with the stirring shaft 38a, and the dispersion wing 40a defines a fluid channel 42a having an outlet opening 16a.

[0058] In a cross section 70a at least substantially transverse to the direction of the internal fluid flow 54a through the fluid channel 42a, the outer boundary 72a of the dispersion wing 40a has a rectangular shape. Alternatively, in a cross section 70a at least substantially transverse to the direction of the internal fluid flow 54a through the fluid channel 42a, the outer boundary 72a of the dispersion wing 40a may have an elliptical shape or a circular shape.

[0059] The shape of the outlet opening 16a when viewed perpendicularly to the main extension plane 68a of the outlet opening 16a and the shape of the outer boundary 72a of the diverging wing 40a in the cross section 70a at least substantially transverse to the direction of the internal fluid flow 54a through the fluid channel 42a are substantially the same. It is conceivable that the shape of the outlet opening 16a when viewed perpendicularly to the main extension plane 68a of the outlet opening 16a and the shape of the outer boundary 72a of the diverging wing 40a in the cross section 70a at least substantially transverse to the direction of the internal fluid flow 54a through the fluid channel 42a are different.

[0060] The cross section 70a and the main extension plane 68a of the outlet opening 16a at least substantially coincide at the outlet opening 16a. The stirring device 10a has an optimization unit 18a. The fluid dispersion unit 14a and the optimization unit 18a are partially integrally formed. In the operating state, the optimization unit 18a increases the pressure difference at the outlet openings 16a, 22a.

[0061] The optimization unit 18a has a profile unit 66a. The profile unit 66a is arranged on the stirring shaft 38a. The profile unit 66a is arranged to promote the entry of the fluid into the inlet opening 44a. The profile unit 66a has a profile element 62a. The profile unit 66a has a plurality of profile elements 62a.

[0062] The contour element 62a is configured as a guide plate 64a. The contour element 62a has a curved shape. The contour element 62a is arranged directly at the inlet opening 44a. Each contour element 62a is assigned to exactly one inlet opening 44a. The contour element 62a guides the fluid in the direction of the inlet opening 44a to which the contour element 62a is assigned. The contour element 62a is assigned to each inlet opening 44a.

[0063] The optimization unit 18a has an external pressure optimization unit 20a. In the operating state, the external pressure optimization unit 20a reduces the external pressure behind the outlet openings 16a, 22a.

[0064] The fluid dispersion unit 14a and the external pressure optimization unit 20a are partially integrated with each other.

[0065] The external pressure optimization unit 20a has an impeller 48a. The impeller 48a has blades 24a. The impeller 48a has other blades 60a. The impeller 48a has four blades 24a, 60a. The blades 24a, 60a can rotate around the rotation axis 12a. The blades 24a, 60a have the same angular distance from each other in the circumferential direction of the impeller 48a. The blades 24a, 60a are arranged to generate an external fluid flow 50a. A plurality of blades 24a, 60a corresponds to a plurality of outlet openings 16a, 22a.

[0066] The impeller 48a is arranged below the fluid dispersion unit 14a. The blades 24a, 60a are arranged offset downwards relative to the outlet openings 16a, 22a, as viewed along the rotation axis 12a. Each blade 24a, 60a is assigned to exactly one of the outlet openings 16a, 22a.

[0067] In the operating state, the external pressure optimization unit 20a generates an external fluid flow 50a via the blades 24a, 60a. The external fluid flow 50a in the flow cross section is oriented parallel to the rotation axis 12a (see Figure 1 ).

[0068] The external pressure optimization unit 20a has a flow guide element 26a. The flow guide element 26a is arranged above the outlet openings 16a, 22a. The flow guide element 26a is designed as a closed disk. The flow guide element 26a is formed integrally with the fluid dispersion unit 14a. The flow guide element 26a is provided to deflect the external fluid flow 50a in a direction perpendicular to the rotation axis 12a of the fluid dispersion unit 14a.

[0069] In the operating state, the external pressure optimization unit 20a reduces the external pressure that impedes the discharge of the fluid. In the operating state, the external pressure optimization unit 20a reduces the effect of the discharge of the fluid discharged from the outlet opening 16a by the discharge of the other fluid discharged from the other outlet opening 22a, which is located in front of the outlet opening 16a as viewed in the rotation direction 36a.

[0070] The outlet opening 16a together with the other outlet openings 22a forms a dispersion chamber 56a. Each outlet opening 16a and the outlet opening 16a following it form its own dispersion unit 56a.

[0071] The following description is intended to apply to all fluid discharges at all four outlet openings 16a, and only the fluid discharge at one of the four outlet openings 16a is described here. Due to the fluid discharge at the outlet opening 16a on the dispersion wing 40a, a vortex is formed on the dispersion wing 40a in the rotation direction 36 of the fluid dispersion unit 14a following the dispersion wing 40a in the dispersion chamber 56a. The other fluid transported by the blade 24a washes away the vortex. Therefore, the other fluid inside the dispersion chamber 56a increases the average density at the dispersion wing 40a with the other outlet opening 22a.

[0072] The fluid dispersion unit 14a has a four-unit symmetry. The dispersion chambers 56a are arranged symmetrically on the circumference of the fluid dispersion unit 14a. Each dispersion unit 56a can be made to coincide with the dispersion unit 56a immediately following it by rotating 90° in the rotation direction 36a. Each dispersion unit 56a can be transferred to its own original position by rotating 360° around the rotation axis 12a. The fluid dispersion unit 14a can have any n-unit symmetry, where n is the number of outlet openings 16a, 22a.

[0073] The fluid dispersing unit 14a has a receiving space 52a (see Figure 3 ). The accommodation space 52a is formed in a cylindrical shape. The optimization unit 18a has an internal pressure optimization unit 58a. The internal pressure optimization unit 58a increases the internal pressure in an operating state. The internal pressure optimization unit 58a is completely arranged inside the fluid dispersion unit 14a.

[0074] The internal pressure optimization unit 58a has a fluid delivery unit 28a. The fluid delivery unit 28a is formed into a turbine shape. The fluid delivery unit 28a is completely arranged inside the fluid dispersion unit 14a. The fluid delivery unit 28a is completely arranged inside the accommodation space 52a (see Figures 1 to 3 ).

[0075] The fluid conveying unit 28a has a plurality of guide blades 32a. The number of outlet openings 16a, 22a corresponds to the number of guide blades 32a. The fluid conveying unit 28a has four guide blades 32a. The guide blades 32a each have a curved shape. The guide blades 32a have the same angular distance from each other in the circumferential direction of the fluid conveying unit 28a.

[0076] The receiving space 52a and / or the transition region from the receiving space 52a to the fluid channel 42a is designed to be smooth and / or without edges. The surface of the fluid delivery unit 28a that is in contact with the fluid is smooth and / or without edges.

[0077] In the operating state, the motor 46a rotates the stirring shaft 38a about the rotation axis 12a. The fluid dispersion unit 14a, which is connected to the stirring shaft 38a in a rotationally fixed manner, rotates in the operating state about the rotation axis 12a.

[0078] In the operating state, a negative pressure is generated at the outlet openings 16a, 22a. In the operating state, the fluid flows into the stirring shaft 38a through the inlet opening 44a. The stirring shaft 38a is fluidically connected to the receiving space 52a. The internal fluid flow 54a is generated by the pressure difference between the inlet opening 44a and the outlet openings 16a, 22a. The internal fluid flow 54a first flows from the inlet opening 44a through the stirrer 38a and then flows through the fluid dispersion unit 14a to the outlet openings 16a, 22a.

[0079] In the operating state, the fluid reaches the receiving space 52a. The guide blades 32a of the fluid conveying unit 28a convey the fluid in the area 30a near the rotation axis parallel to the rotation axis 12a. The fluid conveying unit 28a conveys the fluid radially outward from the area 30a near the rotation axis of the fluid dispersing unit 14a in the direction of the outlet opening 16a.

[0080] In the operating state, the fluid conveying unit 28a generates an optimized internal fluid flow 54a. In the operating state, the fluid conveying unit 28a generates an internal fluid flow 54a without vortices. The fluid conveying unit 28a reduces the pressure loss in the operating state.

[0081] It is conceivable that the stirring device 10a mixes and / or disperses the three different fluids with each other. Here, the inlet opening 44a is in the fluid with the lowest density, the external pressure optimization unit 20a is in the second fluid with the highest density, and the fluid dispersion unit 14a is in the third fluid with an intermediate density, whose value is between the value of the lowest density and the value of the highest density. In addition, at least one solid phase, such as a catalyst, can be added to at least one of the three fluids.

[0082] Figure 4An alternative exemplary embodiment of a stirring device 10b is shown. In order to avoid unnecessary repetition, the same reference numerals are used for the same components, and reference is made to Figures 1 to 3 In the following, only Figure 4 Alternative exemplary embodiments of Figures 1 to 3 In order to distinguish the exemplary embodiments, Figure 4 The letter b is placed after the reference numerals of the alternative exemplary embodiments.

[0083] Figure 4 A schematic perspective view of a fluid dispersion unit 14b of an alternative stirring device 10b and an optimization unit 18b of the alternative stirring device 10b with a fluid delivery unit 28b is shown.

[0084] The fluid dispersion unit 14b has an outlet opening 16b. The outlet opening 16b has a semicircular shape when viewed perpendicularly to a main extension plane 68b of the outlet 16b. Alternatively, the outlet opening 16b may have an elliptical or circular shape when viewed perpendicularly to a main extension plane 68b of the outlet opening 16b.

[0085] The fluid dispersing unit 14b has a further outlet opening 22b which is arranged in front of the outlet opening 16b, viewed in the direction of rotation of the fluid dispersing unit 14b.

[0086] The fluid dispersion unit 14b has four outlet openings 16b, 22b. The outlet openings 16b, 22b are respectively provided for fluid discharge. The fluid dispersion unit 14b has four dispersion wings 40b. Each of the four dispersion blades 40b defines one of the outlet openings 16b, 22b. The dispersion wings 40b are respectively configured as stirring blades.

[0087] In an operating state, when the fluid dispersion unit 14b is rotated in a rotational direction, the outlet openings 16b, 22b are oriented in a direction opposite to the rotational direction.

[0088] The outlet openings 16b, 22b have the same angular distance from one another in the circumferential direction of the fluid dispersion unit 14b.

[0089] In the following, only one of the four dispersion wings 40b and one of the four outlet openings 16b, 22b will be described, the description being intended to apply to all dispersion wings 40b and all outlet openings 16b.

[0090] The dispersion wings 40b are bent in the plane of rotation of the fluid dispersion unit 14b. The dispersion wings 40b extend radially outward from a region near the center of the fluid dispersion unit 14b. The dispersion wings 40b are hollow. The dispersion wings 40b are in fluid communication with the stirring shaft 38b. The dispersion wings 40b together with the outlet opening 16b define a fluid channel 42b.

[0091] In cross section 70b, at least substantially transverse to the direction of internal fluid flow 54b through fluid channel 42b, outer boundary 72b of dispersion wing 40b has a semicircular shape.

[0092] The shape of the outlet opening 16b when viewed perpendicularly to the main extension plane 68b of the outlet opening 16b and the shape of the outer boundary 72b of the dispersing wing 40b in the cross section 70b at least substantially transverse to the direction of the internal fluid flow 54b through the fluid channel 42b are substantially the same. It is conceivable that the shape of the outlet opening 16b when viewed perpendicularly to the main extension plane 68b of the outlet opening 16b and the shape of the outer boundary 72b of the dispersing wing 40b in the cross section 70b at least substantially transverse to the direction of the internal fluid flow 54b through the fluid channel 42b are different.

[0093] The section surface 70b is oriented at least substantially parallel to the main extension plane 68b of the outlet opening 16b.

[0094] Figure 5 A schematic perspective view of a fluid dispersing unit 14c of an alternative stirring device 10c and an optimization unit 18c of an alternative stirring device 10c with a fluid conveying unit 28c is shown.

[0095] In order to avoid unnecessary repetition, therefore, the same reference numerals are used for the same components, and reference is made to Figures 1 to 4 In the following, only Figure 5 Another alternative embodiment with Figures 1 to 4 To distinguish the exemplary embodiments, Figure 5 The letter c is placed after the reference numeral of another alternative exemplary embodiment.

[0096] The fluid dispersion unit 14c has a turbulence unit 74c. The turbulence unit 74c is designed in a spiral shape. The turbulence unit 74c has a spiral line 76c. It is conceivable that the turbulence unit 74c has a plurality of spiral lines 76c, which are particularly wound around themselves in at least one operating state. It is conceivable that a plurality of spiral lines 76c are arranged one above the other. It is also conceivable that the spiral line 76c is at least partially arranged on the rod of the fluid dispersion unit 14c.

[0097] The turbulence units 74c are arranged in an outer region of the stirring unit 10c, viewed along the rotation axis 12c of the fluid dispersion unit 14c. The turbulence units 74c are arranged between the dispersion wings 40c.

[0098] The turbulence unit 74c is arranged to facilitate the transition of the fluid to the other fluid. After the fluid is discharged from the outlet opening 16c, the fluid at least partially flows around the turbulence unit 74c. The turbulence unit 74c generates turbulence and / or shear force in the vicinity of the turbulence unit 74c. The fluid is distributed with turbulence and / or shear force.

[0099] In the case of fluid in gas phase, turbulence unit 74c reduces the diameter of primary bubbles of fluid coming out of outlet opening 16c and / or from other outlet openings 22c. Turbulence unit 74c breaks primary bubbles emerging from outlet opening 16c and / or from other outlet openings 22c into multiple smaller bubbles.

[0100] Figure 6 A schematic perspective view shows a fluid dispersing unit 14d of a stirring device 10d and an optimization unit 18d of the stirring device 10d with a fluid conveying unit 28d.

[0101] In order to avoid unnecessary repetition, therefore, the same reference numerals are used for the same components, and reference is made to Figures 1 to 5 In the following, only Figure 6 Another alternative exemplary embodiment of Figures 1 to 5 In order to distinguish the exemplary embodiments, Figure 6 The letter d is placed after the reference numerals of the exemplary embodiments.

[0102] and Figures 1 to 5 Unlike the exemplary embodiment in the embodiment of the embodiment of the present invention, the fluid dispersion unit 14d has symmetry. The fluid dispersion unit 14d has six circular tubes 78d, which are symmetrically arranged on the circumference of the fluid dispersion unit 14d. Each circular tube 78d forms a dispersion chamber 56d. By rotating 60° in the rotation direction 36d, each circular tube 78d can overlap with the circular tube 78d immediately following it. Each circular tube 78d can return to its original position by rotating 360° around the rotation axis 12d. The fluid outlets 16d, 22d are arranged on each circular tube 78d.

[0103] Figure 7 and Figure 8 Two schematic perspective views of a fluid dispersing unit 14e of a stirring device 10e and an optimization unit 18e of a stirring device 10e with a fluid conveying unit 28e are shown.

[0104] In order to avoid unnecessary repetition, the same components are provided with the same reference numerals and reference is made to Figures 1 to 6In the following, only Figure 7 and Figure 8 An exemplary embodiment of Figures 1 to 6 To distinguish between the exemplary embodiments, Figure 7 and Figure 8 The letter e is placed after the reference numerals of the exemplary embodiments.

[0105] The fluid dispersion unit 14e has symmetry. The fluid dispersion unit 14e has six dispersion chambers 56e, which are arranged symmetrically on the circumference of the fluid dispersion unit 14e. By rotating 60° in the rotation direction 36e, each dispersion chamber can be overlapped with the dispersion chamber 56e immediately following it. Each dispersion chamber 56e can be returned to its original position by rotating 360° around the rotation axis 12e of the fluid dispersion unit 14e. Each dispersion chamber 56e has an outlet 16e, 22e.

[0106] In a viewing direction perpendicular to the rotation axis 12e, the fluid dispersion unit 14e at least partially has the shape of an airfoil profile 80e. When viewing the dispersion chamber 56e of the fluid dispersion unit 14e, the fluid dispersion unit 14e has a profile leading edge 82e facing the rotation direction 36e and a profile trailing edge 84e facing away from the rotation direction 36e. The profile leading edge 82e and the profile trailing edge 84 delimit the area of ​​the fluid dispersion chamber 14e in the shape of the airfoil profile 80e. Starting from the profile leading edge 82e, the outlet opening 16e extends in the direction of the profile trailing edge 84e and has a semi-elliptical cross section.

[0107] Figure 8 Another view of the fluid dispersion unit 14e is shown. The optimized unit 18e has a blade 24e. The blade 24e is assigned to the outlet opening 16e. The blade 24e has a shape that is curved in the direction of rotation 36e. The optimized unit 18e has a further blade 80e. The further blade 80e is assigned to the outlet opening 16e. The further blade 80e is arranged spaced apart from the blade 24e.

[0108] Reference numerals

[0109] 10. Stirring device

[0110] 12 Rotation axis

[0111] 14 Fluid dispersion unit

[0112] 16 exit openings

[0113] 18 Optimization Units

[0114] 20 External pressure optimization unit

[0115] 22 Other exit openings

[0116] 24 blades

[0117] 26 flow guide element

[0118] 28 Fluid transport unit

[0119] 30Area near the rotation axis

[0120] 32 guide blades

[0121] 34. Mixer

[0122] 36Rotation direction

[0123] 38 stirring shaft

[0124] 40 Dispersion Wing

[0125] 42 fluid channels

[0126] 44 Opening Entrance

[0127] 46 Motor

[0128] 48 Impeller

[0129] 50 external fluid flow

[0130] 52 Accommodation Space

[0131] 54 Internal fluid flow

[0132] 56 Dispersion Room

[0133] 58 Internal Pressure Optimization Unit

[0134] 60 Other leaves

[0135] 62 contour elements

[0136] 64 guide plate

[0137] 66 contour units

[0138] 68 Main extension plane

[0139] 70 Section

[0140] 72 Outer Boundary

[0141] 74 turbulence units

[0142] 76 spiral

[0143] 78 round tube

[0144] 80 airfoil profile

[0145] 82 contour leading edge

[0146] 84 contour trailing edge

[0147] 86 other blades.

Claims

1. A stirring device (10a, 10b, 10c, 10d, 10e), in particular for mixing a fluid with at least one other fluid, the stirring device having at least one fluid dispersing unit (14a, 14b, 14c, 14d, 14e) rotatable about an axis of rotation (12a, 12b, 12c, 12d, 12e), the at least one fluid dispersing unit (14a, 14b, 14c, 14d, 14e) having at least one outlet opening (16a, 16b, 16c, 16d, 16e) for discharge of at least one fluid, the at least one fluid dispersing unit (14a, 14b, 14c, 14d, 14e) comprising at least one dispersing wing (40a, 40b, 40c, 40d, 40e), The at least one dispersion wing (40a, 40b, 40c, 40d, 40e): comprising said at least one outlet opening (16a, 16b, 16c, 16d, 16e), extending radially outward from a region proximate the center of the at least one fluid dispersion unit (14a, 14b, 14c, 14d, 14e), is hollow, and defining at least one fluid passage (42a, 42b, 42c, 42d, 42e), and The stirring device (10a, 10b, 10c, 10d, 10e) comprises at least one optimization unit (18a, 18b, 18c, 18d, 18e), which increases at least one pressure difference at the at least one outlet opening (16a, 16b, 16c, 16d, 16e) in at least one operating state, characterized in that The at least one optimization unit (18a, 18b, 18c, 18d, 18e) comprises at least one fluid delivery unit (28a, 28b, 28c, 28d, 28e), which generates an optimized internal fluid flow (54a, 54b, 54c, 54d, 54e) in an operating state, wherein the fluid delivery unit (28a, 28b, 28c, 28d, 28e) is arranged on the fluid dispersion unit (14a, 14b, 14c, 14d, 14e), and wherein the at least one fluid conveying unit (28a, 28b, 28c, 28d, 28e) in the at least one operating state conveys fluid at least partially radially outward from at least one rotation axis vicinity region (30a, 30b, 30c, 30d, 30e) of the at least one fluid dispersion unit (14a, 14b, 14c, 14d, 14e) in the direction of the at least one outlet opening (16a, 16b, 16c, 16d, 16e).

2. The stirring device (10a, 10b, 10c, 10d, 10e) according to claim 1, characterized in that: The at least one optimization unit (18a, 18b, 18c, 18d, 18e) has at least one external pressure optimization unit (20a, 20b, 20c, 20d, 20e), and the at least one external pressure optimization unit reduces at least one external pressure that reacts to the discharge of the at least one fluid in the operating state.

3. The stirring device (10a, 10b, 10c, 10d, 10e) according to claim 1, characterized in that: The at least one fluid dispersion unit (14a, 14b, 14c, 14d, 14e) has a further outlet opening (22a, 22b, 22c, 22d, 22e) for the discharge of at least one other fluid, the further outlet opening being arranged in front of the at least one outlet opening (16a, 16b, 16c, 16d, 16e) when viewed in the rotational direction (36a, 36b, 36c, 36d, 36e) of the at least one fluid dispersion unit (14a, 14b, 14c, 14d, 14e), wherein the at least one optimization unit (18a, 18b, 18c, 18d, 18e) reduces at least one effect of the at least one fluid discharge by the at least one other fluid discharge in the at least one operating state.

4. The stirring device (10a, 10b, 10c, 10d, 10e) according to claim 1, characterized in that: The at least one optimization unit (18a, 18b, 18c, 18d, 18e) generates at least one external fluid flow (50a, 50b, 50c, 50d, 50d, 50e) in the at least one operating state, and the at least one external fluid flow is oriented at least parallel to the rotation axis (12a, 12b, 12c, 12d, 12e) of the at least one fluid dispersion unit (14a, 14b, 14c, 14d, 14e) in at least one flow section.

5. The stirring device (10a, 10b, 10c, 10d, 10e) according to claim 4, characterized in that: The at least one optimization unit (18a, 18b, 18c, 18d, 18e) has at least one blade (24a, 24b, 24c, 24d, 24e) that can rotate around the rotation axis (12a, 12b, 12c, 12d, 12e) of the at least one fluid dispersion unit (14a, 14b, 14c, 14d, 14e), and the blade is used to at least partially generate the at least one external fluid flow (50a, 50b, 50c, 50d, 50e).

6. The stirring device (10a, 10b, 10c, 10d, 10e) according to claim 5, characterized in that: The at least one blade (24a, 24b, 24c, 24d, 24e) is assigned to the at least one outlet opening (16a, 16b, 16c, 16d, 16e).

7. The stirring device (10a, 10b, 10c, 10d, 10e) according to claim 6, characterized in that: The at least one blade (24a, 24b, 24c, 24d, 24e) is offset relative to the at least one outlet opening (16a, 16b, 16c, 16d, 16e) when viewed along the rotation axis (12a, 12b, 12c, 12d, 12e).

8. The stirring device (10a, 10b, 10c, 10d, 10e) according to claim 4, characterized in that: The at least one optimization unit (18a, 18b, 18c, 18d, 18e) has at least one flow-guiding element (26a, 26b, 26c, 26d, 26e), which deflects the at least one external fluid flow (50a, 50b, 50c, 50d, 50e) into a direction at least perpendicular to the rotation axis (12a, 12b, 12c, 12d, 12e) of the at least one fluid dispersion unit (14a, 14b, 14c, 14d, 14e).

9. The stirring device (10a, 10b, 10c, 10d, 10e) according to claim 1, characterized in that: The at least one optimization unit (18a, 18b, 18c, 18d, 18e) has at least one internal pressure optimization unit (58a, 58b, 58c, 58d, 58e), and the at least one internal pressure optimization unit at least increases the internal pressure which is beneficial to the discharge of the at least one fluid in an operating state.

10. The stirring device (10a, 10b, 10c, 10d, 10e) according to claim 1, characterized in that: The at least one fluid conveying unit (28a, 28b, 28c, 28d, 28e) has at least one guide blade (32a, 32b, 32c, 32d, 32e), the at least one guide blade has a curved shape, and transports fluid in the at least one rotation axis vicinity region (30a, 30b, 30c, 30d, 30e) at least parallel to the rotation axis (12a, 12b, 12c, 12d, 12e) of the at least one fluid dispersing unit (14a, 14b, 14c, 14d, 14e).

11. The stirring device (10a, 10b, 10c, 10d, 10e) according to claim 10, characterized in that: The at least one fluid delivery unit (28a, 28b, 28c, 28d, 28e) is completely arranged inside the at least one fluid dispersion unit (14a, 14b, 14c, 14d, 14e).

12. The stirring device (10a, 10b, 10c, 10d, 10e) according to claim 10, characterized in that: The surface of the at least one fluid conveying unit (28a, 28b, 28c, 28d, 28e) that is in contact with the fluid is configured to be at least smooth and / or without edges.

13. The stirring device (10c) according to claim 3, characterized in that: The at least one fluid dispersion unit (14c) has at least one turbulence unit (74c) for influencing the at least one fluid discharge and / or the at least one other fluid discharge.

14. The stirring device (10d) according to claim 1, characterized in that The at least one fluid dispersing unit (14d) has at least one circular tube (78d) which is arranged perpendicular to the axis of rotation (12d) and on which the at least one outlet opening (16d) is arranged.

15. The stirring device (10e) according to claim 1, characterized in that: The at least one fluid dispersion unit (14e) has at least partially the shape of an airfoil profile (80e) in at least one viewing direction perpendicular to the rotation axis (12e).

16. A stirrer (34a, 34b, 34c, 34d, 34e) having at least one stirring device (10a, 10b, 10c, 10d, 10e) according to any of the preceding claims.

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