EP4264060A1 - Laterne mit elementen zur wärmeableitung - Google Patents
Laterne mit elementen zur wärmeableitungInfo
- Publication number
- EP4264060A1 EP4264060A1 EP21815947.3A EP21815947A EP4264060A1 EP 4264060 A1 EP4264060 A1 EP 4264060A1 EP 21815947 A EP21815947 A EP 21815947A EP 4264060 A1 EP4264060 A1 EP 4264060A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lantern
- arrangement according
- elements
- pump arrangement
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/5893—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps heat insulation or conduction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/20—Heat transfer, e.g. cooling
- F05D2260/221—Improvement of heat transfer
- F05D2260/2214—Improvement of heat transfer by increasing the heat transfer surface
Definitions
- the invention relates to a pump arrangement with a lantern which is arranged between a pump housing and a motor housing.
- Such a pump arrangement can be a centrifugal pump arrangement, for example.
- Centrifugal pumps are based on the principle of energy transfer to a fluid through a change in swirl as a result of a torque that is triggered by a uniformly rotating impeller on the fluid flowing through it.
- Centrifugal pumps are mostly driven by electric motors.
- piston engines are also used as drives in centrifugal pump technology.
- Electric motors generate a uniform torque.
- the electric motor is an electromechanical energy converter that converts electrical energy into mechanical energy.
- DC motors, AC motors or three-phase motors are used. As a rule, the electrical energy is converted into a rotational movement.
- the electric motor driving a centrifugal pump is usually connected to the pump at a certain distance via a lantern.
- the motor drive shaft passes through the center of the openings in the two flanges or covers for attachment to the motor and the pump housing.
- Lanterns are commonly made by casting. Such a lantern and a corresponding production method are described, for example, in EP 1 038 61 1 A2.
- the type and number of connecting webs described enable a particularly stable design of a lantern.
- the object of the invention is to provide a lantern as a connecting element between a pump housing and a drive motor.
- This connecting element should be able to dissipate the heat that emanates from the pump housing when pumping hot fluids as well as possible and conduct it only slightly in the direction of the motor and/or power electronics.
- the connecting element should be characterized by a compact design. The replacement of spare parts should be made possible by the design of the Connection element be favored.
- the connecting element should be able to be implemented simply and inexpensively.
- surface-enlarging elements for heat dissipation are arranged on a lantern of a pump arrangement, which is arranged between a pump housing and a motor housing.
- the surface-enlarging elements are ideally designed as cooling fins in order to optimize the heat dissipation of the lantern.
- the cooling fins are plate-shaped and/or trapezoidal and/or triangular and/or arc-shaped and/or ring-shaped. Due to the lantern's optimized heat dissipation, the pump housing, which can reach high temperatures due to the pumping of hot fluids, and the motor housing are almost thermally decoupled.
- the optimization of the heat dissipation of the lantern is achieved by the advantageous construction of the lantern.
- the motor assembly fan creates a flow of cooling air which cools the fins of the motor housing and then flows over the lantern.
- the lantern is constructed in such a way that the inner diameter remains constant over the length of the main body of the lantern and the outer diameter increases. In this particularly advantageous way, the flow of cooling air flows over the cooling fins of the lantern and efficiently dissipates the heat.
- the design of the lantern directs the flow of cooling air over the pump housing, so that the flow against the pump housing represents reduced flow resistance.
- the outside diameter of the lantern base increases towards the pump side, which improves the flow regime of the cooling air flow generated by the motor fan.
- a smaller flow resistance means a higher flow speed, which in turn favors improved heat dissipation of the motor housing and lantern.
- the lantern is rotationally symmetrical.
- the symmetrical design of the lantern favors the flow-optimized guidance of the cooling air flow and intensifies the heat dissipation of the lantern.
- the thermal decoupling of the pump housing from the motor housing is advantageously supported by the symmetrical design of the lantern.
- the surface-enlarging elements which are designed as cooling ribs, are arranged on a hollow-cylindrical base body of the lantern.
- the lateral surface of the lantern preferably has openings which are preferably designed as windows. This can be used for assembly, for accessibility to the shaft and/or for the inflow of cooling air and/or for increasing the thermal resistance of the lantern.
- the lantern advantageously connects the pump housing and the motor housing directly. In principle, no additional component is required to establish this connection. A reduction in the number of components is usually advantageous for reducing the manufacturing costs.
- the lantern is designed in several parts. This can be done, for example, with removable blades and/or cooling fins and/or by a split version of the lantern. Furthermore, a solution with different sleeves is also conceivable, which can be pushed one over the other, with cooling ribs being arranged on the outside of a sleeve.
- the thermal conductivity of the lantern material is less than 40 W/m K, preferably less than 20 W/m K, in particular less than 10 W/m K.
- the lantern is preferably made of cast iron or aluminum or stainless steel.
- the lantern can be made using a casting process or 3D printing.
- the thermal conductivity of the cooling fins is more than 150 W/m K, in particular more than 200 W/m K, preferably more than 250 W/m K.
- the surface-enlarging elements are designed in particular as guide elements for guiding a flow of cooling air.
- the flow-optimized routing of the cooling air flow increases the heat dissipation of the lantern, which is conducted from the pump housing into the lantern.
- the surface-enlarging elements are aligned axially.
- the axial alignment of the cooling ribs promotes the overflow of the cooling air flow with reduced flow resistance and leads to a particularly ideal heat dissipation of the lantern.
- the surface-enlarging elements are advantageously aligned radially. This orientation realizes a flow-optimized dissipation of the cooling air flow over the pump housing and at the same time enables efficient heat dissipation of the lantern. This preferably achieves a thermal decoupling of the pump housing and the motor housing.
- the lantern has elements to increase the surface area. These elements can be designed in the form of cooling fins. The thermal decoupling of the pump housing from the motor housing is facilitated by the increased surface area of the lantern.
- the surface-enlarging elements are plate-shaped and/or trapezoidal and/or triangular and/or arc-shaped and/or ring-shaped in the form of cooling fins.
- the lantern is preferably designed in the shape of a cylinder and/or a trumpet funnel. This spatial configuration is particularly advantageous in order to achieve additional cooling of the lantern by the flow of cooling air generated by the motor fan.
- the lantern can also be cone-shaped and/or cuboid.
- the lantern is formed in one piece with the motor-side pressure cover of the pump housing and/or in one piece with the pump-side motor cover.
- the lantern can thus be made particularly compact and enables a pump arrangement with dimensions that can also be used at installation sites with limited space.
- the lantern is designed as a bearing support on the pump side and/or on the motor side. This leads to a particularly compact design of the lantern and at the same time to a reduction in the assembly effort due to the reduction in the number of parts.
- cutouts in the form of windows can be arranged in the lantern for the cooling air flow to enter the interior of the lantern to cool the shaft.
- FIG. 1 shows a schematic representation of a centrifugal pump unit according to the prior art
- FIG. 2 shows a schematic representation of a centrifugal pump unit with surface-enlarging elements
- FIG. 3 shows a schematic representation of a centrifugal pump unit with surface-enlarging, arc-shaped elements
- FIG. 4 shows a schematic representation of a centrifugal pump unit with a trumpet-shaped lantern and surface-enlarging elements
- 5 shows a schematic representation of a centrifugal pump unit with a trumpet-shaped lantern and surface-enlarging, arc-shaped elements
- FIG. 6 shows a schematic representation of a centrifugal pump unit with radially aligned, surface-enlarging elements
- FIG. 7 shows a schematic representation of a centrifugal pump unit with a further embodiment of the surface-enlarging elements.
- a lantern 2 is arranged between a pump housing 1 and a motor housing 4 and connects them to each other.
- the centrifugal pump shown in the exemplary embodiment is used to convey fluids that can have high temperatures under certain circumstances.
- the fluid enters the pump housing 1 of the centrifugal pump through a suction mouth 7 .
- the impeller is arranged inside the pump housing 3 .
- the impeller transfers kinetic energy to the fluid, which leaves the centrifugal pump via the pressure port 8 .
- the space filled with fluid and the impeller is delimited by a pump housing 1 and a housing cover.
- the impeller is connected in a rotationally fixed manner to a shaft which drives the impeller by means of a motor arrangement.
- the motor arrangement comprises the motor electronics 3, a rotor, a stator, the shaft, a motor cover on the pump side and a motor housing 4.
- a bearing carrier, which carries a bearing, is arranged in the motor cover.
- a fan impeller 6 arranged on the shaft draws in a flow of cooling air axially through the fan housing 5 in order to flow over the motor housing 4 and to flow through the space between the motor housing 4 and the motor electronics 3.
- the area marked with arrows in The cooling air flow shown in FIG. 1 flows over the lantern 2 and hits the pump housing 1 . This negatively affects the flow regime of the cooling air flow and reduces heat dissipation.
- the surface-enlarging elements 9 are designed as cooling ribs.
- the cooling ribs extend axially over the length of the base body of the lantern 2 and are arranged on the outside of the lantern 2 in the form of a hollow cylinder.
- the width of the axial cooling ribs is more than 1 mm, preferably more than 2 mm, in particular more than 3 mm, and/or less than 14 mm, preferably less than 12 mm, in particular less than 10 mm.
- the height of the axial cooling ribs is more than 3 mm, preferably more than 5 mm, in particular more than 7 mm, and/or less than 50 mm, preferably less than 45 mm, in particular less than 40 mm.
- the thermal conductivity of the lantern material is less than 40 W/m K, preferably less than 20 W/m K, in particular less than 10 W/m K, and the thermal conductivity of the cooling fins is more than 150 W/m K, in particular more than 200 W/m K, preferably more than 250 W/m K.
- the base body of the lantern 2 is preferably made of gray cast iron or aluminum or stainless steel.
- the surface-enlarging elements 9 are aligned axially.
- the axial alignment of the cooling ribs promotes the overflow of the cooling air flow, indicated by arrows in the figure, with reduced flow resistance and leads to a particularly ideal heat dissipation of the lantern 2.
- cutouts 10 in the form of windows for the entry of the cooling air flow into the interior of the lantern for cooling the shaft are arranged in the lantern 2 .
- Fig. 3 shows a schematic representation of a centrifugal pump unit with surface-enlarging, arcuate elements 9.
- On the base body of the lantern 2 are arranged several surface-enlarging elements 9, which are formed in this embodiment as arcuate or curved cooling fins.
- the dimensions of the cooling ribs correspond to those in Fig. 2.
- the cooling air flow generated by the fan impeller 6 flows over the cooling ribs of the motor housing 4 and then the cooling ribs of the lantern 2. Due to the curved shape of the cooling ribs of the lantern 2, the cooling air flow is given a direction indicated by arrows in the figure 3 and does not strike the pump housing 1 perpendicularly. As a result, the flow regime of the cooling air flow is improved overall and the heat dissipation performance of the lantern 2 and the motor housing 4 is increased.
- FIG. 4 shows a schematic representation of a centrifugal pump unit with a trumpet funnel-shaped lantern 2 and surface-enlarging elements 9.
- the trumpet funnel shape of the exemplary embodiment of the lantern 2 is particularly flow-optimized with regard to the cooling air flow generated by the fan impeller 6.
- the flow of cooling air represented by arrows in FIG. 4 does not strike the pump housing 1 perpendicularly, but is guided over the pump housing 1 by the trumpet funnel shape of the lantern 2 .
- the flow optimization leads to a higher flow speed of the cooling air flow, which also improves the heat dissipation of the surface-enlarging elements 9 arranged axially on the lantern 2 .
- the heat dissipating surface of the lantern 2 is enlarged, whereby the heat dissipation performance is increased again.
- the lantern 2 in the shape of a trumpet funnel can also be designed asymmetrically in order to form the overflow of an asymmetrically designed pump housing 1 in an ideal manner.
- the shape of the lantern 2 is adapted to the shape of the pump housing 1.
- Fig. 5 shows a schematic representation of a centrifugal pump unit with a trumpet-shaped lantern 2 and surface-enlarging, arcuate elements 9.
- the lantern 2 shown in this exemplary embodiment largely corresponds to the lantern 2 from FIG. 4.
- the surface-enlarging elements 9 are designed in the form of curved cooling fins . This will create the one with arrows shown cooling air flow passed over the pump housing 1 and at the same time generates a swirl that improves the heat dissipation performance.
- Fig. 6 shows a schematic representation of a centrifugal pump unit with a lantern 2, the surface-enlarging elements 9 are aligned radially.
- the lantern 2 has a plurality of radially arranged surface-enlarging elements 9, which in this exemplary embodiment are designed as radial cooling rib rings.
- the base body of the lantern 2 in FIG. 6 corresponds to the lantern 2 in FIG. 2.
- four rings of cooling fins are additionally arranged on the hollow-cylindrical base body.
- the cooling rib rings have different heights, which increase in the direction of the pump housing 1 in such a way that the lantern 2 is given a frustoconical shape by the cooling rib rings.
- the width of the cooling fin rings is more than 1 mm, preferably more than 2 mm, in particular more than 3 mm, and/or less than 14 mm, preferably less than 12 mm, in particular less than 10 mm.
- the height of the smallest ring of cooling ribs is more than 3 mm, preferably more than 5 mm, in particular more than 7 mm, and/or less than 30 mm, preferably less than 25 mm, in particular less than 20 mm.
- the height of the largest ring of cooling fins is more than 20 mm, preferably more than 25 mm, in particular more than 30 mm, and/or less than 100 mm, preferably less than 90 mm, in particular less than 80 mm.
- the cooling rib rings are arranged vertically at the same distance on the lantern 2 and the height of the cooling rib rings increases symmetrically in the direction of the pump housing 1 .
- the arrangement of the cooling rib rings is not at the same distance from one another and/or the alignment is not perpendicular to the lantern 1 .
- the orientation of the cooling fin rings can assume a flow-optimized angle.
- the material thickness of the lantern 2 is more than 1 mm, preferably more than 2 mm, in particular more than 3 mm, and/or less than 14 mm, preferably less than 12 mm, in particular less than 10 mm.
- the cooling rib rings can be arranged on a sleeve which is fitted over the hollow-cylindrical base body of the lantern 2 .
- the surface-enlarging elements 9 are advantageously aligned radially in the form of cooling fin rings. This orientation realizes a flow-optimized discharge of the cooling air flow over the pump housing 1 and at the same time enables efficient heat dissipation of the lantern 2 by the formation of turbulence on the individual cooling rings. This preferably achieves a thermal decoupling of the pump housing and the motor housing.
- Fig. 7 shows a schematic representation of a centrifugal pump unit with a further embodiment of the surface-enlarging elements 9, which are designed in the form of radially aligned cooling rings.
- the inlet ducts are always offset by 90° and direct the flow of cooling air through the window 10 of the lantern 2 to cool the drive shaft into the interior of the lantern.
- the cooling rib rings have interruptions in the area of the windows 10 and are not completely rotationally symmetrical.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020133832.5A DE102020133832A1 (de) | 2020-12-16 | 2020-12-16 | Laterne mit Elementen zur Wärmeableitung |
| PCT/EP2021/081783 WO2022128287A1 (de) | 2020-12-16 | 2021-11-16 | Laterne mit elementen zur wärmeableitung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4264060A1 true EP4264060A1 (de) | 2023-10-25 |
Family
ID=78819477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21815947.3A Pending EP4264060A1 (de) | 2020-12-16 | 2021-11-16 | Laterne mit elementen zur wärmeableitung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US12510098B2 (de) |
| EP (1) | EP4264060A1 (de) |
| JP (1) | JP7836821B2 (de) |
| CN (1) | CN116670397A (de) |
| DE (1) | DE102020133832A1 (de) |
| WO (1) | WO2022128287A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022133416A1 (de) | 2022-12-15 | 2024-06-20 | KSB SE & Co. KGaA | Axial montierbare Steckwelle |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1136928A (en) * | 1912-07-13 | 1915-04-27 | American Well Works | Centrifugal pump. |
| US2737120A (en) * | 1952-02-12 | 1956-03-06 | Hayward Tyler And Company Ltd | Pump and motor combinations |
| DE1964474A1 (de) | 1969-12-23 | 1971-07-15 | Siemen & Hinsch Gmbh | Pumpe zur Foerderung von Medien mit hoher Temperatur |
| DE2408660C3 (de) * | 1974-02-22 | 1979-08-23 | Feodor Burgmann Dichtungswerk, 8190 Wolfratshausen | Doppelt wirkende Gleitringdichtung |
| FR2288241A1 (fr) * | 1974-10-14 | 1976-05-14 | Materiel Telephonique | Groupe electropompe pour fluides a haute temperature |
| DE2750967C2 (de) * | 1977-11-15 | 1979-12-06 | Flutec Fluidtechnische Geraete Gmbh, 6603 Sulzbach | Vorrichtung zum Verbinden eines Antriebsmotors und einer Pumpe |
| DE3016681C2 (de) * | 1980-04-30 | 1986-01-02 | Klein, Schanzlin & Becker Ag, 6710 Frankenthal | Wärmesperre für stopfbuchslose Hochtemperaturumwälzpumpen |
| DE8627766U1 (de) | 1986-10-17 | 1988-02-11 | Sihi Gmbh & Co Kg, 2210 Itzehoe | Kreiselpumpe |
| DE3917811A1 (de) | 1989-06-01 | 1990-12-06 | Hilge Philipp Gmbh | Pumpe fuer steril- und reinraeume |
| DE19912936A1 (de) | 1999-03-22 | 2000-09-28 | Wilo Gmbh | Laterne zum Befestigen eines Motors an einer Pumpe |
| DE10120409B4 (de) * | 2001-04-26 | 2004-02-12 | Sero Pumpenfabrik Gmbh & Co. Kg | Kreiselpumpe zur Förderung heißer Medien |
| US8152458B2 (en) * | 2009-04-28 | 2012-04-10 | Mp Pumps, Inc. | Centrifugal pump with improved drive shaft and heat exchanger |
| JP5731166B2 (ja) * | 2010-10-29 | 2015-06-10 | エア・ウォーター株式会社 | 低温液化ガス用ポンプ |
| EP2924261B1 (de) * | 2012-11-22 | 2019-09-25 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | Turbolader mit elektrischem motor und motorvorrichtung mit turbolader mit elektrischem motor |
| DE102017209803A1 (de) | 2017-06-09 | 2018-12-13 | KSB SE & Co. KGaA | Kreiselpumpe zur Förderung heißer Medien |
| DE102020006366A1 (de) * | 2020-10-16 | 2022-04-21 | KSB SE & Co. KGaA | Kreiselpumpe mit einem Antrieb |
| DE102021118378A1 (de) * | 2021-07-15 | 2023-01-19 | KSB SE & Co. KGaA | Geräuschoptimierte Kreiselpumpe |
-
2020
- 2020-12-16 DE DE102020133832.5A patent/DE102020133832A1/de active Pending
-
2021
- 2021-11-16 WO PCT/EP2021/081783 patent/WO2022128287A1/de not_active Ceased
- 2021-11-16 US US18/267,511 patent/US12510098B2/en active Active
- 2021-11-16 CN CN202180084844.7A patent/CN116670397A/zh active Pending
- 2021-11-16 EP EP21815947.3A patent/EP4264060A1/de active Pending
- 2021-11-16 JP JP2023537061A patent/JP7836821B2/ja active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE102020133832A1 (de) | 2022-06-23 |
| US12510098B2 (en) | 2025-12-30 |
| JP7836821B2 (ja) | 2026-03-27 |
| WO2022128287A1 (de) | 2022-06-23 |
| CN116670397A (zh) | 2023-08-29 |
| US20240044342A1 (en) | 2024-02-08 |
| JP2023553731A (ja) | 2023-12-25 |
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