DE974665C - Pump unit in which the pump impeller and the rotor of the electric motor are housed in a common space - Google Patents
Pump unit in which the pump impeller and the rotor of the electric motor are housed in a common spaceInfo
- Publication number
- DE974665C DE974665C DEF4967A DEF0004967A DE974665C DE 974665 C DE974665 C DE 974665C DE F4967 A DEF4967 A DE F4967A DE F0004967 A DEF0004967 A DE F0004967A DE 974665 C DE974665 C DE 974665C
- Authority
- DE
- Germany
- Prior art keywords
- rotor
- pump
- protective layer
- housed
- pump unit
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/128—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
Description
Pumpenaggregat, bei dem das Pumpenlaufrad und der Rotor des Elektromotors in einem gemeinsamen Raum untergebracht sind Die Erfindung betrifft ein Pumpenaggregat, bei dem das Pumpenlaufrad und der Rotor des Elektromotors in einem gemeinsamen Raum untergebracht sind und Rotor, Statorblechpaket, Statorflansch sowie Welle des Pumpenlaufrades mittels einer elastischen Kunststoffschutzschicht gegen die Förderflüssigkeit geschützt sind.Pump unit in which the pump impeller and the rotor of the electric motor are housed in a common space The invention relates to a pump unit, in which the pump impeller and the rotor of the electric motor are in a common space are housed and rotor, stator core, stator flange and shaft of the pump impeller Protected against the conveyed liquid by means of an elastic plastic protective layer are.
Es ist bekannt, in derartigen Fällen als Schutzschicht eine verhältnismäßig dickwandige Gummilage zu verwenden, die auf die Motorteile aufvulkanisiert wird. Durch diese Maßnahme wird aber die Gefahr in Kauf genommen, daß die Wicklung temperaturgeschädigt wird. Es ist ferner bekannt, den Wicklungsraum durch eine Hülle oder eine Wand aus Glimmer oder synthetischen Harzen, die hohe Temperaturen aushalten, von den übrigen Teilen des Motors abzutrennen. Diese Hüllen oder Wände sind aber nicht elastisch genug, um in allen vorkommenden Betriebsfällen den durch Erwärmung hervorgerufenen Längenänderungen der mit ihnen versehenen Maschinenteile ohne Rißbildung nachzugeben.It is known to use a relatively protective layer in such cases to use thick-walled rubber layer, which is vulcanized onto the engine parts. By this measure, however, the risk is accepted that the winding will be temperature-damaged will. It is also known to make the winding space through a shell or a wall Mica or synthetic resins that can withstand high temperatures from the rest Separate parts of the engine. However, these shells or walls are not elastic enough to cover that caused by heating in all operating cases Changes in length of the machine parts provided with them yield without cracking.
Es wurde nun gefunden, daß diese Nachteile behoben sind, wenn die Schutzschicht aus einem Umsetzungsprodukt aus niedrigmolekularem Polyester aus Dicarbonsäuren und Di- oder Triolen und Diisocyanaten besteht. Diese Umsetzungsprodukte haben bei ihrer Verwendung als Schutzschicht für den vorliegenden Spezialfall von Pumpenaggregaten gezeigt, daß sie bei steigender Wärmeeinwirkung gleichzeitig an Elastizität gewinnen, ohne jedoch ihre harte Oberfläche zu verlieren. Diese Umsetzungsprodukte sind als Schutzschicht für den obigen Fall einerseits korrosionsfest genug, um den chemischen Beanspruchungen durch das zu fördernde Medium gewachsen zu sein, andererseits weisen sie auch genügend Elastizität auf, um den Wärmebewegungen der zu schützenden Teile folgen zu können. Während die bisher als Schutzschicht üblichen Kunstharze beispielsweise im Sonderfall eines Pumpenmotors für flüssiges Chlor versagen und daher solche Motoren mit einem Spaltrohr unter Inkaufnahme eines Motorwirkungsgrades von etwa 420/o und eines cos 9 von etwa o,625 ausgerüstet werden, behält der Motor bei Verwendung einer Isolierhülle aus obengenanntem Stoff seine hohen Werte (Wirkungsgrad etwa 89 % und cos 99 etwa o,89) bei.It has now been found that these disadvantages are eliminated when the Protective layer made from a reaction product of low molecular weight polyester from dicarboxylic acids and di- or triols and diisocyanates. These conversion products have their use as a protective layer for the present special case of pump units shown that they with increasing exposure to heat at the same time Gain elasticity without losing their hard surface. These conversion products are on the one hand corrosion-resistant enough as a protective layer for the above case to protect the To be able to withstand chemical stresses caused by the medium to be conveyed, on the other hand they also have enough elasticity to withstand the thermal movements of the to be protected Parts to be able to follow. While the synthetic resins used as a protective layer up to now for example in the special case of a pump motor for liquid chlorine fail and hence such motors with a can with the acceptance of a motor efficiency of about 420 / o and a cos 9 of about 0.625, the engine retains its high values (efficiency about 89% and cos 99 about 0.89).
Die Ausführung einer solchen Pumpe ist im Prinzip in der Abbildung dargestellt. Der Motorteil enthält das Statorblechpaket I mit der Wicklung 2 und den Rotor 3. Die Nuten des Stators sind vorzugsweise mit einem Spachtelkitt ausgefüllt, der beispielsweise auf Basis des obengenannten Kondensationsproduktes hergestellt ist, so daß sich eine glatte Statoroberfläche ergibt. An der Stirnseite ist der Stator durch die Flansche 4 abgeschlossen. Das Statorblechpaket und, soweit erforderlich, auch die Flansche 4 werden innen mit dem Schutzüberzug versehen, der den Ständerteil des Motors gegen die korrodierenden Einflüsse des Mediums schützt. Ein ähnlicher Schutzüberzug wird auch auf den Rotor 3 und die Welle 6 aufgebracht. Die Abdichtung des Motorinnern nach außen erfolgt durch Dichtungen 7 zwischen den Flanschen 4 und den Lagergehäusen 8 und 9. Selbstverständlich lassen sich auch die Lagergehäuse 8 und 9 in gleicher Weise schützen. Die in der Zeichnung dargestellten Kühlmittelwege Io, II und I2 sowie das Förderorgan I3 für das Kühlmedium gehören nicht zum Gegenstand der Erfindung. An Stelle des Schutzanstriches auf Lackbasis kann man insbesondere zum Schutze des Stators I und der Flansche 4 auch eine elastische Folie vorsehen, die in an sich bekannter Weise durch den inneren Pumpenüberdruck allseitig gegen die Unterlage gepreßt wird. Die Folie kann also dünn sein, da der Überdruck ja von der Unterlage (also z. B. dem Stator) aufgenommen wird.The design of such a pump is shown in principle in the figure shown. The motor part contains the stator laminated core I with the winding 2 and the rotor 3. The slots of the stator are preferably filled with putty, which is produced, for example, on the basis of the abovementioned condensation product is, so that there is a smooth stator surface. At the front is the Stator completed by the flanges 4. The stator core and, if necessary, the flanges 4 are also provided with the protective coating on the inside, which covers the stand part of the motor protects against the corrosive influences of the medium. A similar one Protective coating is also applied to the rotor 3 and the shaft 6. The waterproofing the inside of the motor to the outside through seals 7 between the flanges 4 and the bearing housings 8 and 9. Of course, the bearing housings Protect 8 and 9 in the same way. The coolant paths shown in the drawing Io, II and I2 as well as the conveying element I3 for the cooling medium do not belong to the subject the invention. Instead of the protective coating based on lacquer, you can in particular also provide an elastic film to protect the stator I and the flanges 4, which in a known manner against all sides by the internal pump overpressure the pad is pressed. So the film can be thin because the overprint of the base (e.g. the stator) is added.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF4967A DE974665C (en) | 1950-11-03 | 1950-11-03 | Pump unit in which the pump impeller and the rotor of the electric motor are housed in a common space |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF4967A DE974665C (en) | 1950-11-03 | 1950-11-03 | Pump unit in which the pump impeller and the rotor of the electric motor are housed in a common space |
Publications (1)
Publication Number | Publication Date |
---|---|
DE974665C true DE974665C (en) | 1961-03-16 |
Family
ID=7084386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEF4967A Expired DE974665C (en) | 1950-11-03 | 1950-11-03 | Pump unit in which the pump impeller and the rotor of the electric motor are housed in a common space |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE974665C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1453792B1 (en) * | 1964-09-11 | 1969-09-11 | Klein Schanzlin & Becker Ag | Device for the automatic generation of a lubricating, cooling and venting circuit for centrifugal pump units |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE315049C (en) * | ||||
DE347151C (en) * | 1914-08-01 | 1922-01-14 | Wilhelm Ziegenfuss | Electric motor |
US1678380A (en) * | 1924-07-25 | 1928-07-24 | Cooper Thomas Lancelot Reed | Dynamo-electric machine |
DE488672C (en) * | 1918-03-26 | 1930-01-04 | Thomas Lancelot Reed Cooper | Electric motor which can be submerged in liquid and in which the stator windings are arranged in a liquid-tight chamber that is completely filled with insulating liquid |
DE524573C (en) * | 1929-04-11 | 1931-05-09 | Otto Titus Blathy Dr | Oil-tight closure for oil-cooled stands of electrical machines, whose stand space, designed as an oil container, is separated from the runner space by an insulating end tube |
DE542078C (en) * | 1928-07-16 | 1932-01-22 | Julius Schmauss | Arrangement to prevent bulging of the tubular wall, which separates the stand space from the runner space and lies in the air gap, of electric motors working under water or other fluids |
DE581353C (en) * | 1933-07-26 | Sachsenwerk Licht & Kraft Ag | Process for the insulation of metal parts of electrical machines and apparatus from injected or sprayed metal | |
DE594794C (en) * | 1930-06-01 | 1934-10-03 | Mueller Erich | Single or multi-phase motor with stator winding protected against ingress of water |
DE656981C (en) * | 1935-12-22 | 1938-02-19 | Uta Garvens Pumpen Komm Ges Pl | Electric motor designed for operation under water and provided with lubricated slide bearings |
DE716232C (en) * | 1936-02-29 | 1942-01-15 | Ernst Duenner | Conveyor unit using an electric motor |
FR903186A (en) * | 1944-04-04 | 1945-09-26 | Submersible electric motor | |
FR926329A (en) * | 1943-04-12 | 1947-09-29 | Improvements to notched cores of dynamo-electric machines | |
US2460418A (en) * | 1944-08-18 | 1949-02-01 | Smith Corp A O | Electric motor |
GB653154A (en) * | 1948-10-01 | 1951-05-09 | Pierce John B Foundation | Improvements in or relating to electrically driven fluid pumps |
-
1950
- 1950-11-03 DE DEF4967A patent/DE974665C/en not_active Expired
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE315049C (en) * | ||||
DE581353C (en) * | 1933-07-26 | Sachsenwerk Licht & Kraft Ag | Process for the insulation of metal parts of electrical machines and apparatus from injected or sprayed metal | |
DE347151C (en) * | 1914-08-01 | 1922-01-14 | Wilhelm Ziegenfuss | Electric motor |
DE488672C (en) * | 1918-03-26 | 1930-01-04 | Thomas Lancelot Reed Cooper | Electric motor which can be submerged in liquid and in which the stator windings are arranged in a liquid-tight chamber that is completely filled with insulating liquid |
US1678380A (en) * | 1924-07-25 | 1928-07-24 | Cooper Thomas Lancelot Reed | Dynamo-electric machine |
DE542078C (en) * | 1928-07-16 | 1932-01-22 | Julius Schmauss | Arrangement to prevent bulging of the tubular wall, which separates the stand space from the runner space and lies in the air gap, of electric motors working under water or other fluids |
DE524573C (en) * | 1929-04-11 | 1931-05-09 | Otto Titus Blathy Dr | Oil-tight closure for oil-cooled stands of electrical machines, whose stand space, designed as an oil container, is separated from the runner space by an insulating end tube |
DE594794C (en) * | 1930-06-01 | 1934-10-03 | Mueller Erich | Single or multi-phase motor with stator winding protected against ingress of water |
DE656981C (en) * | 1935-12-22 | 1938-02-19 | Uta Garvens Pumpen Komm Ges Pl | Electric motor designed for operation under water and provided with lubricated slide bearings |
DE716232C (en) * | 1936-02-29 | 1942-01-15 | Ernst Duenner | Conveyor unit using an electric motor |
FR926329A (en) * | 1943-04-12 | 1947-09-29 | Improvements to notched cores of dynamo-electric machines | |
FR903186A (en) * | 1944-04-04 | 1945-09-26 | Submersible electric motor | |
US2460418A (en) * | 1944-08-18 | 1949-02-01 | Smith Corp A O | Electric motor |
GB653154A (en) * | 1948-10-01 | 1951-05-09 | Pierce John B Foundation | Improvements in or relating to electrically driven fluid pumps |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1453792B1 (en) * | 1964-09-11 | 1969-09-11 | Klein Schanzlin & Becker Ag | Device for the automatic generation of a lubricating, cooling and venting circuit for centrifugal pump units |
DE1453797C2 (en) * | 1964-09-11 | 1970-05-14 | Klein Schanzlin & Becker Ag | Device for the automatic generation of a lubricating, cooling and venting circuit for centrifugal pump units |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2122041A1 (en) | Open electrical machine for use in chemically aggressive environments | |
DE2446310A1 (en) | RUNNER FOR SHORT-CIRCUIT RUNNER MOTORS | |
DE974665C (en) | Pump unit in which the pump impeller and the rotor of the electric motor are housed in a common space | |
CH305818A (en) | Pump unit. | |
DE2101672A1 (en) | Heating water circulation pump | |
IT7912841A0 (en) | SUITABLE FOR PUMPS AND MOTORS, PARTICULARLY HYDRAULIC IMPROVEMENTS WITH HELICAL TYPE GEARS | |
DE866366C (en) | Sealing the dry stand space against the wet runner space of an underwater motor | |
DE2353154B2 (en) | Regenerative electric winding capacitor | |
DE6606489U (en) | ROTOR OF AN ASYNCHRONOUS MACHINE WITH A CAGE WINDING PROTECTED AGAINST THE ACCESS OF PRESSURIZED GASES OR LIQUIDS. | |
DE1868925U (en) | CENTRIFUGAL PUMP UNIT WITH A STATOR LIQUID PROTECTED BY A CONTAINER. | |
DE1865580U (en) | CENTRIFUGAL PUMP UNIT WITH LIQUID PROTECTED ROTOR. | |
AT126779B (en) | Electric machine with jacket cooling. | |
DE1538911A1 (en) | Electric motor with cage runner to drive pumps | |
DE883477C (en) | Process for the production of the selenium layer on the base plates of selenium rectifiers | |
AT210756B (en) | Circulation pump without stuffing box with electric drive | |
DE1922427A1 (en) | Submersible pump unit | |
AT115166B (en) | Electric cable. | |
AT235657B (en) | Temperature indicating corrosion protection agent | |
DE889500C (en) | Surface treatment and impregnation agents | |
DE503333C (en) | Double-walled protective housing for centrifuges | |
DE1914257A1 (en) | Process for improving the corrosion resistance and wear resistance of the rotors of heating circulation pumps of the canned motor type | |
DE1036961B (en) | Electrical conductor embedded in insulated metal casting, in particular injection molding | |
DE755914C (en) | Method of making seals | |
AT147083B (en) | Carbon film brush. | |
DE1588997A1 (en) | Armature core for rotating electrical machines |