EP1047334B1 - Circulating pump, notably for a water-circulating household appliance - Google Patents
Circulating pump, notably for a water-circulating household appliance Download PDFInfo
- Publication number
- EP1047334B1 EP1047334B1 EP99957271A EP99957271A EP1047334B1 EP 1047334 B1 EP1047334 B1 EP 1047334B1 EP 99957271 A EP99957271 A EP 99957271A EP 99957271 A EP99957271 A EP 99957271A EP 1047334 B1 EP1047334 B1 EP 1047334B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- heating device
- circulating pump
- housing
- pump housing
- 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 - Lifetime
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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
- 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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
- A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4285—Water-heater arrangements
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/04—Heating arrangements
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/083—Liquid discharge or recirculation arrangements
- D06F39/085—Arrangements or adaptations of pumps
Definitions
- the invention relates to a circulating pump, in particular for a water-conducting household appliance, as dishwasher or washing machine, which with a washing and a electric heater is equipped for Spülwasserer stiirmung, with a on the motor housing the pump housing flanged with intake and discharge nozzles for the Circulating liquid circulating and to be heated, where appropriate safety devices, such as thermal switch, pressure switch or the like. For monitoring the fluid to be pumped are provided in the water cycle.
- heating device for heating the washing liquid of a dishwasher is an electrical resistance heating (tubular heater) the outside of the metal part of the motor housing of the circulating pump, wherein the waterproof Motor housing including the flanged pump housing in the washing compartment of the household appliance is housed and immersed in the rinsing liquid to be heated.
- the connection lines The electrical heating are together with the lines of the engine from the Pump housing and the washing out liquid-tight.
- the heater inside the motor housing is arranged.
- the pump motor is too high heat load to protect.
- the heater can only indirectly through the metal motor housing To heat circulating rinsing liquid, which is why worked with an increased heating power must become. Also, by the only indirectly transferable to the rinse water heat the efficiency the heating lowered.
- the summary of heating and pump to one non-separable functional unit makes the complete in case of a heating or pump failure Replacement of motor or pump including heating required.
- the heater for the Spülckenillonkeitser was used as a heating system, a water heater (see EP 0 591 774 A1).
- a water heater see EP 0 591 774 A1.
- the separate arrangement of the heater outside the washing is Although advantageous for the service case, but in such an embodiment, the covering Remove the external wall of the device if the heater is replaced or damaged in the event of damage must be repaired.
- a circulating pump according to the preamble of claim 1 is known from US 3051182 A known.
- the invention poses the problem of a combined with a circulation pump heating system to create flushing fluid that works effectively and energy efficient, little installation space claimed and easily accessible for the service case and is easily replaceable.
- the combination of the heating device with the pump and its arrangement according to the invention in the watercourse of the pump, preferably in the pump housing, allows a fast lossless transfer of heat to the circulating rinsing liquid.
- the heating system works very effectively and energy-saving.
- the heater in any service case is also easily accessible and easily replaceable separately from the pump. Due to the formation of the heater on Pump housings are design measures for the pump drive or the electrical Pump motor not necessary.
- the combination of the heating device with the circulation pump advantageously creates the possibility also the safety devices necessary for the water cycle of the household appliance, such as thermal switches, pressure switches, turbidity sensors or the like.
- the safety devices necessary for the water cycle of the household appliance such as thermal switches, pressure switches, turbidity sensors or the like.
- Also on the pump housing preferably by plug or locking connections releasably to arrange. hereby a self-testable unit can be completed.
- a dishwasher (1) shown in Fig. 1 comprises a washing container (2) with two superimposed arranged crockery baskets (3, 4), wherein in a third flushing level above the upper crockery basket (4) a cutlery drawer (5) is provided.
- the baskets (3, 4) and the cutlery drawer (5) are known in the washing (2) on rails (6) led. Instead of the cutlery drawer (5) can in one of the baskets (3, 4) and a Cutlery basket to be used separately.
- Spraying devices (7 to 9) are driven by a common circulating pump (11), which is mounted in the device housing below the washing container (2), supplied with rinsing liquid.
- the circulation pump (11) pressure port (12, 13) on its pump housing (14), to which the spray arms are connected.
- the circulating pump (11) is preferably in the embodiment as a centrifugal pump with in the pump housing (14) arranged pump impeller (16) for transport the rinsing liquid formed.
- other types of pumps can be used.
- the pump used (11) for the sake of clarity and for illustrative purposes the inventive combination of a rinse water heater (17) with the pump housing (14) the pump housing cover (23), sh. Fig. 3 u. 4, omitted Service.
- the outside of the washing compartment (2) arranged circulation pump (11) is connected to the electric Heating device (17) combined to form a pre-testable unit, wherein the However, combined building modules (pump 11, heating 17) can be replaced separately or are detachably mounted.
- the heating device (17) is in the watercourse of the circulation pump (11) on the pump housing (14), preferably within the pump housing (14) between Inlet (15) and discharge nozzle (12, 13) arranged. This arrangement is advantageous for a powerful and effectively working with high efficiency without heat loss Heating device (17). In this case, the heating device (17) operates as one of the rinsing liquid washed tubular heating element (18).
- the tubular heater (18) of the heater (17) is shown in FIG. 2 circumferentially annular preferably wound in the manner of a wound cylindrical coil and surrounds the pump impeller (16) concentric.
- Such a wound tubular heater (18) of the heater (17) is advantageous in Pump housing (14) on the pump motor side housing half (24) of the pump housing (14), wherein the electrical connections (22) isolated and liquid-tight the pot-shaped Pass through the housing wall of the pump housing (14).
- the heating device is expedient (17) at a distance from the walls of the pump housing (14) on the circulation pump (11) mounted.
- the pump housing (14) in turn is releasably on the motor housing (19) of the circulation pump (11) mounted.
- FIG. 3 and 4 Another advantageous arrangement is the releasable attachment of the heater (17) in Pump housing (14) on the removable pump housing cover (23) of the circulating pump (11) As shown in FIG. 3 and 4.
- a tubular heater (18 ') is used, but as a spiral is formed, which in the lid plane around the intake manifold (15) is wound around.
- the cover (23) is mounted, the spiral then lies in front of the covered pump impeller (16), see above that this can rotate freely.
- the heater (17) is also in this construction by inserted intermediate webs (25) with distance to the walls of the pump housing (14) and the cover (23) to the pump (11) mounted (see Fig. 4).
- the in the pump housing (14) arranged heater (17) with the exposed lapped Tubular heater (18, 18 ') forms with the surrounding pump housing (14) a water heater of optimum performance and high efficiency, because all heat is transferred directly to the rinsing liquid in the rinse water circulation.
- the heating device (17) as Water heater also separately outside the pump housing (14) as one with a connection or Pressure port (12, 13) of the circulating pump (11) connectable coupling piece formed be, which is preferably attachable to the nozzle, wherein the water connection connections for the heating device (17) and / or their electrical line connections (22) also are designed releasably to each other.
- a part of the pump housing (14) itself as a heater (17) form and this separate housing part with detachable the rest of the pump housing z. B. to connect by screwing liquid-tight.
- the invention is not based on circulation pumps in dishwashers or centrifugal pumps limited. Likewise, the invention may also be used in pumps in washing machines or in general for electric pumps are used in water circuits, where liquids are fast and to be heated energy-saving. But especially for devices where less Installation space for heating and pump is present and repair work u. U. fast must be carried out, as z. B. in devices in the laboratory or hospital area the case is.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Cookers (AREA)
- Washing And Drying Of Tableware (AREA)
Abstract
Description
Die Erfindung betrifft eine Umwälzpumpe, insbesondere für ein wasserführendes Haushaltgerät, wie Geschirrspülmaschine oder Waschmaschine, welche mit einem Spülbehälter und einer elektrischen Heizeinrichtung zur Spülwassererwärmung ausgestattet ist, mit einem am Motorgehäuse der Pumpe angeflanschten Pumpengehäuse mit Ansaug- und Druckstutzen für die im Kreislauf umzuwälzende und zu erwärmende Flüssigkeit, wobei ggf. Sicherheitseinrichtungen, wie Thermoschalter, Druckschalter oder dergl. zur Überwachung der zu fördernden Flüssigkeit im Wasserkreislauf vorgesehen sind.The invention relates to a circulating pump, in particular for a water-conducting household appliance, as dishwasher or washing machine, which with a washing and a electric heater is equipped for Spülwassererwärmung, with a on the motor housing the pump housing flanged with intake and discharge nozzles for the Circulating liquid circulating and to be heated, where appropriate safety devices, such as thermal switch, pressure switch or the like. For monitoring the fluid to be pumped are provided in the water cycle.
Bei wasserführenden Haushaltgeräten, insbesondere bei Geschirrspülmaschinen, ist es allgemein bekannt, die zum Erwärmen der Spülflüssigkeit dienende elektrische Heizeinrichtung innerhalb des Spülbehälters vorzugsweise im muldenförmig ausgebildeten Bodenteil über oder unter den Filtersieben anzuordnen. Beim Geschirrspülen wird das durch die Rohrheizkörper erwärmte Spülwasser mittels der geräteeigenen Umwälzpumpe dann angesaugt und im Kreislauf über das Geschirr geführt. Aus den Gründen einer einfachen Montage, Wartung sowie aus Platzgründen ist die im Regelfall als Kreiselpumpe ausgebildete Umwälzpumpe außerhalb des Spülbehälters im Sockelbereich des Haushaltgerätes zugänglich installiert. Durch die räumliche Trennung von Pumpe und Heizeinrichtung ist eine besondere Sorgfalt hinsichtlich der Dichtheit und der elektrischen Sicherheit der aus dem Spülbehälter führenden Leitungen und elektrischen Anschlüsse notwendig.In water-bearing household appliances, especially in dishwashers, it is common known, serving for heating the rinsing liquid electric heater within the rinsing container preferably in the trough-shaped bottom part over or to be arranged under the filter screens. When washing dishes, this is done by the tubular heaters heated rinse water then sucked by means of the device's own circulation pump and in the circulation led over the dishes. For the sake of easy installation, maintenance as well as out Space reasons, the circulation pump is usually designed as a centrifugal pump outside the Rinsing container installed in the base area of the household appliance accessible. By the spatial Separation of pump and heater is a special care in terms of tightness and the electrical safety of leading from the washing tub lines and electrical Connections necessary.
Bei einer anderen bekannten Heizeinrichtung zum Erwärmen der Spülflüssigkeit einer Geschirrspülmaschine (vgl. DE 29 38 883 C2) ist eine elektrische Widerstandsheizung (Rohrheizkörper) außen am metallenen Teil des Motorgehäuses der Umwälzpumpe angeordnet, wobei das wasserdichte Motorgehäuse samt dem angeflanschten Pumpengehäuse im Spülbehälter des Haushaltgerätes untergebracht ist und in die zu erwärmende Spülflüssigkeit eintaucht. Die Anschlußleitungen der elektrischen Heizung sind zusammen mit den Leitungen des Motors aus dem Pumpengehäuse und dem Spülbehälter flüssigkeitsdicht herausgeführt. Bei diesem Technikstand ist auch eine weitere Variante vorgesehen, nach welcher die Heizung innenseitig im Motorgehäuse angeordnet ist. Hierbei ist jedoch der Pumpenmotor vor zu hoher Wärmebelastung zu schützen. Andererseits kann die Heizung nur indirekt über das metallene Motorgehäuse die umzuwälzende Spülflüssigkeit erwärmen, weshalb mit einer erhöhten Heizleistung gearbeitet werden muß. Auch ist durch die nur indirekt auf das Spülwasser übertragbare Wärme der Wirkungsgrad der Heizung herabgesetzt. Die Zusammenfassung von Heizung und Pumpe zu einer nicht trennbaren Funktionseinheit macht bei einem Heizungs- oder Pumpendefekt den kompletten Austausch von Motor bzw. Pumpe einschließlich Heizung erforderlich.In another known heating device for heating the washing liquid of a dishwasher (see DE 29 38 883 C2) is an electrical resistance heating (tubular heater) the outside of the metal part of the motor housing of the circulating pump, wherein the waterproof Motor housing including the flanged pump housing in the washing compartment of the household appliance is housed and immersed in the rinsing liquid to be heated. The connection lines The electrical heating are together with the lines of the engine from the Pump housing and the washing out liquid-tight. At this technology booth Another variant is provided according to which the heater inside the motor housing is arranged. Here, however, the pump motor is too high heat load to protect. On the other hand, the heater can only indirectly through the metal motor housing To heat circulating rinsing liquid, which is why worked with an increased heating power must become. Also, by the only indirectly transferable to the rinse water heat the efficiency the heating lowered. The summary of heating and pump to one non-separable functional unit makes the complete in case of a heating or pump failure Replacement of motor or pump including heating required.
Es ist ebenfalls bekannt, die Heizeinrichtung für die Spülflüssigkeitserwärmung außerhalb des Spülbehälters entfernt von der Pumpe seitlich zwischen der Spülbehälteraußenwand und dem Außengehäuse anzuordnen, wobei als Beheizungssystem ein Durchlauferhitzer eingesetzt ist (vgl. EP 0 591 774 A1). Die separate Anordnung der Heizung außerhalb des Spülbehälters ist für den Servicefall zwar vorteilhaft, jedoch ist bei einer derartigen Ausführung die abdeckende Geräteaußenwand zu demontieren, wenn die Heizung im Schadensfall ausgewechselt oder repariert werden muß.It is also known, the heater for the Spülflüssigkeitserwärmung outside the Rinse tank away from the pump laterally between the Spülbehälteraußenwand and the To arrange outer housing, being used as a heating system, a water heater (see EP 0 591 774 A1). The separate arrangement of the heater outside the washing is Although advantageous for the service case, but in such an embodiment, the covering Remove the external wall of the device if the heater is replaced or damaged in the event of damage must be repaired.
Eine Umwälzpumpe gemäß dem Oberbegriff des Anspruchs 1 ist aus der US 3051182 A
bekannt.A circulating pump according to the preamble of
Der Erfindung stellt sich das Problem, ein mit einer Umwälzpumpe kombiniertes Beheizungssystem für Spülflüssigkeit zu schaffen, das effektiv und energiesparend arbeitet, wenig Einbauplatz beansprucht und für den Servivefall leicht zugänglich sowie einfach austauschbar ist.The invention poses the problem of a combined with a circulation pump heating system to create flushing fluid that works effectively and energy efficient, little installation space claimed and easily accessible for the service case and is easily replaceable.
Erfindungsgemäß wird dieses Problem durch die im Patentanspruch 1 angegebenen Merkmalen
gelöst.According to the invention, this problem is solved by the features specified in
Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.Advantageous embodiments and developments of the invention will become apparent from the following Dependent claims.
Die Kombination der Heizungeinrichtung mit der Pumpe und deren erfindungsgemäße Anordnung im Wasserlauf der Pumpe, vorzugsweise im Pumpengehäuse, ermöglicht eine schnelle verlustfreie Übertragung der Wärme auf die umlaufende Spülflüssigkeit. Das Beheizungssystem arbeitet sehr effektiv und energiesparend. Ferner beansprucht die flache und raumsparende Ausgestaltung des Rohrheizkörpers in Form einer Spirale bzw. Zylinderspule wenig Einbauplatz. Vorteilhaft ist die Heizung im eventuellen Servicefall außerdem leicht zugänglich und separat von der Pumpe einfach austauschbar. Durch die Ausbildung der Heizeinrichtung am Pumpengehäuse sind konstruktive Maßnahmen beim Pumpenantrieb bzw. am elektrischen Pumpenmotor nicht notwendig.The combination of the heating device with the pump and its arrangement according to the invention in the watercourse of the pump, preferably in the pump housing, allows a fast lossless transfer of heat to the circulating rinsing liquid. The heating system works very effectively and energy-saving. Furthermore claimed the flat and space-saving Design of the tubular heater in the form of a spiral or cylindrical coil little slot. Advantageously, the heater in any service case is also easily accessible and easily replaceable separately from the pump. Due to the formation of the heater on Pump housings are design measures for the pump drive or the electrical Pump motor not necessary.
Die Kombination der Heizeinrichtung mit der Umwälzpumpe schafft vorteilhaft die Möglichkeit, auch die für den Wasserkreislauf des Haushaltgerätes notwendigen Sicherheitseinrichtungen, wie Thermoschalter, Druckschalter, Trübungssensoren oder dergl. ebenfalls am Pumpengehäuse vorzugsweise durch Steck- oder Rastverbindungen lösbar mit anzuordnen. Hierdurch kann eine in sich vorprüfbare Baueinheit komplettiert werden.The combination of the heating device with the circulation pump advantageously creates the possibility also the safety devices necessary for the water cycle of the household appliance, such as thermal switches, pressure switches, turbidity sensors or the like. Also on the pump housing preferably by plug or locking connections releasably to arrange. hereby a self-testable unit can be completed.
Ausführungsbeispiele der Erfindung sind in den Zeichnungen rein schematisch dargestellt und nachfolgend näher beschrieben. Embodiments of the invention are shown purely schematically in the drawings and described in more detail below.
Es zeigen:
Figur 1- den Wasserweg in einer Geschirrspülmaschine in vereinfachter Form,
Figur 2- eine Umwälzpumpe der Geschirrspülmaschine mit geöffnetem Pumpengehäuse und eingebauter Heizeinrichtung für die Spülflüssigkeit, in perspektivischer Ansicht,
Figur 3- einen Deckel des Pumpengehäuses der Umwälzpumpe in Kombination mit einer weiteren Ausführungsform der Heizeinrichtung nach der Erfindung, im Längsschnitt,
- Figur 4
- den mit der Heizeinrichtung kombinierten Pumpengehäusedeckel in der Seitenansicht.
- FIG. 1
- the waterway in a dishwasher in a simplified form,
- FIG. 2
- a circulation pump of the dishwasher with an open pump housing and built-in heating device for the washing liquid, in perspective view,
- FIG. 3
- a lid of the pump housing of the circulating pump in combination with a further embodiment of the heating device according to the invention, in longitudinal section,
- FIG. 4
- the combined with the heater pump housing cover in side view.
Eine in Fig. 1 dargestellte Geschirrspülmaschine (1) weist einen Spülbehälter (2) mit zwei übereinander angeordneten Geschirrkörben (3, 4) auf, wobei in einer dritten Spülebene über dem oberen Geschirrkorb (4) eine Besteckschublade (5) vorgesehen ist. Die Geschirrkörbe (3, 4) sowie die Besteckschublade (5) sind in bekannter Weise im Spülbehälter (2) auf Laufschienen (6) geführt. Anstelle der Besteckschublade (5) kann in einem der Geschirrkörbe (3, 4) auch ein Besteckkorb separat eingesetzt werden.A dishwasher (1) shown in Fig. 1 comprises a washing container (2) with two superimposed arranged crockery baskets (3, 4), wherein in a third flushing level above the upper crockery basket (4) a cutlery drawer (5) is provided. The baskets (3, 4) and the cutlery drawer (5) are known in the washing (2) on rails (6) led. Instead of the cutlery drawer (5) can in one of the baskets (3, 4) and a Cutlery basket to be used separately.
Unter jedem Geschirrkorb (3, 4) ist eine diesem Korb zugeordnete Sprühvorrichtung (7, 8) für das zu reinigende Geschirr vorgesehen. Eine dritte Sprühvorrichtung (9) über der Besteckschublade (5) ist an der Spülbehälterdecke (10) installiert. Die als rotierende Sprüharme ausgebildeten Sprühvorrichtungen (7 bis 9) werden von einer gemeinsamen Umwälzpumpe (11), die im Gerätegehäuse unterhalb des Spülbehälters (2) montiert ist, mit Spülflüssigkeit versorgt. Hierfür weist die Umwälzpumpe (11) Druckstutzen (12, 13) an ihrem Pumpengehäuse (14) auf, an welche die Sprüharme angeschlossen sind. Mit (15) ist ein Ansaugstutzen der Umwälzpumpe (11) bezeichnet, mit dem die Spülflüssigkeit für den Flüssigkeitsumlauf aus dem Spülbehälter angesaugt wird. Die Umwälzpumpe (11) ist im Ausführungsbeispiel vorzugsweise als Kreiselpumpe mit im Pumpengehäuse (14) angeordnetem Pumpenlaufrad (16) für den Transport der Spülflüssigkeit ausgebildet. Jedoch können auch andere Pumpentypen eingesetzt werden.Under each crockery basket (3, 4) is associated with this basket spraying device (7, 8) for provided the dishes to be cleaned. A third sprayer (9) above the cutlery drawer (5) is installed on the sink cover (10). Designed as rotating spray arms Spraying devices (7 to 9) are driven by a common circulating pump (11), which is mounted in the device housing below the washing container (2), supplied with rinsing liquid. For this purpose, the circulation pump (11) pressure port (12, 13) on its pump housing (14), to which the spray arms are connected. With (15) is an intake manifold of the circulation pump (11), with which the rinsing liquid for the liquid circulation from the washing is sucked. The circulating pump (11) is preferably in the embodiment as a centrifugal pump with in the pump housing (14) arranged pump impeller (16) for transport the rinsing liquid formed. However, other types of pumps can be used.
Gemäß Fig. 2 ist bei der eingesetzten Pumpe (11) der besseren Übersicht halber und zur Veranschaulichung
der erfindungsgemäßen Kombination einer Spülwasser-Heizeinrichtung (17)
mit dem Pumpengehäuse (14) der Pumpengehäusedeckel (23), sh. Fig. 3 u. 4, fortgelassen
worden. Die außerhalb des Spülbehälters (2) angeordnete Umwälzpumpe (11) ist mit der elektrischen
Heizeinrichtung (17) zu einer in sich vorprüfbaren Baueinheit kombiniert, wobei die
miteinander kombinierten Baumodule (Pumpe 11, Heizung 17) jedoch separat auswechselbar
bzw. wiederlösbar montiert sind. Die Heizeinrichtung (17) ist im Wasserlauf der Umwälzpumpe
(11) am Pumpengehäuse (14), vorzugsweise innerhalb des Pumpengehäuses (14) zwischen
Ansaugstutzen (15) und Druckstutzen (12, 13) angeordnet. Diese Anordnung ist vorteilhaft
für eine leistungsfähige und effektiv mit hohem Wirkungsgrad ohne Wärmeverluste arbeitende
Heizeinrichtung (17). Dabei arbeitet die Heizeinrichtung (17) als ein von der Spülflüssigkeit
umspülter Rohrheizkörper (18).2 is in the pump used (11) for the sake of clarity and for illustrative purposes
the inventive combination of a rinse water heater (17)
with the pump housing (14) the pump housing cover (23), sh. Fig. 3 u. 4, omitted
Service. The outside of the washing compartment (2) arranged circulation pump (11) is connected to the electric
Heating device (17) combined to form a pre-testable unit, wherein the
However, combined building modules (
Der Rohrheizkörper (18) der Heizeinrichtung (17) ist gemäß Fig. 2 umlaufend ringförmig vorzugsweise in Art einer gewickelte Zylinderspule gewunden und umgibt das Pumpenlaufrad (16) konzentrisch. Ein so gewundener Rohrheizkörper (18) der Heizeinrichtung (17) ist vorteilhaft im Pumpengehäuse (14) an der pumpenmotorseitigen Gehäusehälfte (24) des Pumpengehäuses (14) montiert, wobei die elektrischen Anschlüsse (22) isoliert und flüssigkeitsdicht die topfförmige Gehäusewand des Pumpengehäuses (14) durchgreifen. Zweckmäßig ist die Heizeinrichtung (17) mit Abstand zu den Wandungen des Pumpengehäuses (14) an der Umwälzpumpe (11) montiert. Das Pumpengehäuse (14) seinerseits ist wiederum lösbar am Motorgehäuse (19) der Umwälzpumpe (11) montiert.The tubular heater (18) of the heater (17) is shown in FIG. 2 circumferentially annular preferably wound in the manner of a wound cylindrical coil and surrounds the pump impeller (16) concentric. Such a wound tubular heater (18) of the heater (17) is advantageous in Pump housing (14) on the pump motor side housing half (24) of the pump housing (14), wherein the electrical connections (22) isolated and liquid-tight the pot-shaped Pass through the housing wall of the pump housing (14). The heating device is expedient (17) at a distance from the walls of the pump housing (14) on the circulation pump (11) mounted. The pump housing (14) in turn is releasably on the motor housing (19) of the circulation pump (11) mounted.
Eine andere vorteilhafte Anordnung ist die lösbare Befestigung der Heizeinrichtung (17) im Pumpengehäuse (14) am abnehmbaren Pumpengehäusedeckel (23) der Umwälzpumpe (11) gemäß Fig. 3 und 4. Dabei ist auch ein Rohrheizkörper (18') verwendet, der jedoch als Spirale ausgebildet ist, welche in der Deckelebene um den Ansaugstutzen (15) herum gewunden ist. Bei montiertem Deckel (23) liegt die Spirale dann vor dem abgedeckten Pumpenlaufrad (16), so daß dieses ungehindert rotieren kann. Die Heizeinrichtung (17) ist auch bei dieser Konstruktion durch eingefügte Zwischenstege (25) mit Abstand zu den Wandungen des Pumpengehäuses (14) bzw. des Deckels (23) an der Pumpe (11) montiert (sh. Fig. 4).Another advantageous arrangement is the releasable attachment of the heater (17) in Pump housing (14) on the removable pump housing cover (23) of the circulating pump (11) As shown in FIG. 3 and 4. In this case, a tubular heater (18 ') is used, but as a spiral is formed, which in the lid plane around the intake manifold (15) is wound around. When the cover (23) is mounted, the spiral then lies in front of the covered pump impeller (16), see above that this can rotate freely. The heater (17) is also in this construction by inserted intermediate webs (25) with distance to the walls of the pump housing (14) and the cover (23) to the pump (11) mounted (see Fig. 4).
Die im Pumpengehäuse (14) angeordnete Heizeinrichtung (17) mit dem freiliegenden umspülten Rohrheizkörper (18, 18') bildet mit dem umgebenden Pumpengehäuse (14) einen Durchlauferhitzer von optimaler Leistungsausnutzung und mit hohem Wirkungsgrad, da alle Wärme bei der Spülwasserumwälzung auf die Spülflüssigkeit direkt übertragen wird.The in the pump housing (14) arranged heater (17) with the exposed lapped Tubular heater (18, 18 ') forms with the surrounding pump housing (14) a water heater of optimum performance and high efficiency, because all heat is transferred directly to the rinsing liquid in the rinse water circulation.
Gemäß einer nicht gezeigten Weiterbildung der Erfindung könnte die Heizeinrichtung (17) als Durchlauferhitzer auch separat außen am Pumpengehäuse (14) als ein mit einem Anschlußoder Druckstutzen (12, 13) der Umwälzpumpe (11) verbindbares Kupplungsstück ausgebildet sein, welches vorzugsweise am Stutzen aufsteckbar ist, wobei die Wasseranschlußverbindungen für die Heizeinrichtung (17) und/oder deren elektrischen Leitungsanschlüsse (22) ebenfalls untereinander lösbar gestaltet sind. Auch ist es möglich, einen Teil des Pumpengehäuses (14) selbst als Heizeinrichtung (17) auszubilden und diesen separaten Gehäuseteil wiederlösbar mit dem übrigen Pumpengehäuse z. B. durch Anschrauben flüssigkeitsdicht zu verbinden.According to a not shown embodiment of the invention, the heating device (17) as Water heater also separately outside the pump housing (14) as one with a connection or Pressure port (12, 13) of the circulating pump (11) connectable coupling piece formed be, which is preferably attachable to the nozzle, wherein the water connection connections for the heating device (17) and / or their electrical line connections (22) also are designed releasably to each other. It is also possible, a part of the pump housing (14) itself as a heater (17) form and this separate housing part with detachable the rest of the pump housing z. B. to connect by screwing liquid-tight.
Zweckmäßig ist es ferner, die den Spülwasserumlauf überwachenden bzw. kontrollierenden üblichen Bauelemente oder Sicherheitseinrichtungen, wie Thermoschalter (20), Druckschalter (21), Trübungssensoren usw. ebenfalls lösbar am Pumpengehäuse (14) flüssigkeitsdicht festzusetzen, wie dies bspw. in Fig. 2 gezeigt ist. Die Befestigung der Sicherheitseinrichtungen könnte vorzugsweise in Steck- oder Rastbauweise erfolgen, so daß eine mit allen Bauteilen komplett vorprüfbare Baueinheit geschaffen ist. Denkbar ist es auch, am Pumpengehäuse (14) mindestens eine Ventileinrichtung zum Absperren oder wahlweisen Öffnen der Pumpendruckstutzen (12, 13) vorzusehen.It is also expedient to monitor or control the flush water circulation Components or safety devices, such as thermal switches (20), pressure switches (21), turbidity sensors, etc. also detachable on the pump housing (14) liquid-tight set, as shown for example in Fig. 2. Fastening of safety devices could preferably be done in plug-in or latching construction, so that one with all components completely pretestable unit is created. It is also conceivable on the pump housing (14) at least one valve device for shutting off or optionally opening the pump discharge nozzle (12, 13).
Die Erfindung ist nicht auf Umwälzpumpen in Geschirrspülmaschinen oder auf Kreiselpumpen beschränkt. Ebenso kann die Erfindung auch bei Pumpen in Waschmaschinen oder allgemein für elektrische Pumpen in Wasserkreisläufen einsetzt werden, bei denen Flüssigkeiten schnell und energiesparend erwärmt werden sollen. Insbesondere aber bei Geräten, bei denen geringer Einbauplatz für Heizung und Pumpe vorhanden ist und Reparaturarbeiten u. U. schnell durchgeführt werden müssen, wie dies z. B. bei Geräten im Labor oder Krankenhausbereich der Fall ist.The invention is not based on circulation pumps in dishwashers or centrifugal pumps limited. Likewise, the invention may also be used in pumps in washing machines or in general for electric pumps are used in water circuits, where liquids are fast and to be heated energy-saving. But especially for devices where less Installation space for heating and pump is present and repair work u. U. fast must be carried out, as z. B. in devices in the laboratory or hospital area the case is.
Claims (14)
- Circulating pump, more especially for a water-bearing household appliance, such as a dishwasher or washing machine, which is provided with a washing container and an electric heating device for heating-up the washing-water, with a pump housing, which is flange-mounted on the motor housing of the pump and has intake and pressure connection pieces for the liquid in circulation to be circulated and heated, where applicable, safety devices such as thermostatic switches, pressure switches or the like being provided for monitoring the liquid to be conveyed in the circulation of the water, characterised in that the heating device (17) is detachably disposed on the pump housing (14) in the water flow of the pump (11).
- Circulating pump according to claim 1, characterised in that the heating device (17) is disposed internally of the pump housing (14) in the water flow between intake and pressure connection pieces (15; 12; 13) of the pump (11).
- Circulating pump according to claim 1 and 2, characterised in that the heating device (17) is detachably secured in the pump housing (14) on the removable pump housing cover (23) of the circulating pump (11).
- Circulating pump according to claims 1 and 2, characterised in that the heating device (17) is mounted in the pump housing (14) on housing half (24) of the pump housing (14) on the side of the pump motor.
- Circulating pump according to one or more of claims 1 to 4, characterised in that the heating device (17) is in the form of a pipe heater (18; 18') which is flowed around by the washing liquid.
- Circulating pump according to one or more of claims 1 to 5, characterised in that the pipe heater (18; 18') is wound in the form of a spiral or in a circular manner in a ring-shape preferably like a wound cylinder coil.
- Circulating pump according to one or more of claims 1 to 6, characterised in that the pipe heater (18; 18') forms a continuous flow heater with the pump housing (14), which surrounds said pipe heater.
- Circulating pump according to one or more of claims 1 to 7, characterised in that the heating device (17) is in the form of a separately mounted part of the pump housing (14).
- Circulating pump according to one or more of claims 1 to 8, characterised in that the heating device (17) is in the form of a coupling piece, which can be connected, preferably plugged-into, the connection or pressure connecting piece (12, 13) of the pump.
- Circulating pump according to one or more of claims 1 to 9, characterised in that the water connecting connections for the heating device (17) and/or the electrical line connections (19) of the heating device (17) are in the form of plug-in type locking connections or the like.
- Circulating pump according to one or more of claims 1 to 10, characterised in that the safety devices, such as thermostatic switch (20), pressure switch (21), turbidity sensors or the like are detachably disposed on the pump housing (14) preferably in a plug-in type manner, and in that the pump (11) is disposed on a washing machine or dishwasher externally of the washing container (2).
- Circulating pump according to one or more of claims 1 to 11, characterised in that at least one valve device is also disposed so as to be exchangeable on the pump housing (14) for the shutting-off or selective opening of the pump pressure connection pieces (12, 13).
- Circulating pump according to one or more of claims 1 to 12, characterised in that the heating device (17) is mounted at a spacing from (intermediate bar 22) the walls of the pump housing (14) on the circulating pump (11).
- Circulating pump according to claim 1 and to one or more of claims 5 to 13, characterised in that the heating device (17) is disposed outside on the pump housing (14).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19852569A DE19852569A1 (en) | 1998-11-13 | 1998-11-13 | Circulation pump, in particular for water-bearing household appliances |
| DE19852569 | 1998-11-13 | ||
| PCT/EP1999/008294 WO2000028878A1 (en) | 1998-11-13 | 1999-10-30 | Circulating pump, notably for a water-circulating household appliance |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1047334A1 EP1047334A1 (en) | 2000-11-02 |
| EP1047334B1 true EP1047334B1 (en) | 2004-07-07 |
| EP1047334B2 EP1047334B2 (en) | 2007-06-06 |
Family
ID=7887803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99957271A Expired - Lifetime EP1047334B2 (en) | 1998-11-13 | 1999-10-30 | Circulating pump, notably for a water-circulating household appliance |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1047334B2 (en) |
| AT (1) | ATE270521T1 (en) |
| DE (2) | DE19852569A1 (en) |
| PL (1) | PL192963B1 (en) |
| WO (1) | WO2000028878A1 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19858137B4 (en) * | 1998-12-16 | 2016-12-15 | BSH Hausgeräte GmbH | Heating for heating the rinsing liquid in a dishwasher |
| DE20018182U1 (en) * | 2000-10-25 | 2001-12-13 | Fritz Eichenauer GmbH & Co. KG, 76870 Kandel | Pump with a heated housing |
| DE10116671B4 (en) * | 2001-04-04 | 2006-04-27 | Miele & Cie. Kg | Circulation pump with heating device |
| DE10133130A1 (en) | 2001-07-07 | 2003-01-16 | Miele & Cie | Circulation pump with/without heating device, especially for supplying washing liquid to dishwasher spray arms, has water switch integrated into circulation pump |
| DE10142525B4 (en) * | 2001-08-30 | 2008-08-21 | Miele & Cie. Kg | Circulation pump with integrated flushing water heater and a temperature safety switch |
| DE60232438D1 (en) * | 2002-06-05 | 2009-07-09 | Candy Spa | dishwasher |
| DE10354148A1 (en) * | 2003-11-19 | 2005-06-30 | Aweco Appliance Systems Gmbh & Co. Kg | Pump for dishwasher or washing machine, has receptacle on one fluid connection for pressure monitoring device |
| ATE366542T1 (en) * | 2004-05-12 | 2007-08-15 | Askoll Holding Srl | LIQUID CIRCULATION PUMP WITH A SYNCHRONOUS MOTOR, EQUIPPED WITH A DEVICE FOR HEATING THE LIQUID, ESPECIALLY FOR WASHING MACHINES |
| ITTO20040592A1 (en) * | 2004-09-08 | 2004-12-08 | Plaset Spa | SNAIL FOR A CENTRIFUGAL PUMP |
| DE102006028913A1 (en) * | 2006-06-21 | 2007-12-27 | Aweco Appliance Systems Gmbh & Co. Kg | Pump, in particular for water-bearing household machines |
| DE102007017271A1 (en) * | 2007-04-12 | 2008-10-16 | BSH Bosch und Siemens Hausgeräte GmbH | Pump with heating device |
| KR101995421B1 (en) * | 2010-12-31 | 2019-07-02 | 엘지전자 주식회사 | Dishwasher |
| DE102012203715A1 (en) * | 2012-03-08 | 2013-09-12 | BSH Bosch und Siemens Hausgeräte GmbH | Water-conducting household appliance with at least one motor-driven pump and a heating device |
| PL2878250T3 (en) | 2013-11-29 | 2020-09-07 | Electrolux Appliances Aktiebolag | Method of operating a water-circulating household appliance |
| CN105465050B (en) | 2014-08-07 | 2019-06-11 | 德昌电机(深圳)有限公司 | Heat pump |
| EP3013116A1 (en) * | 2014-10-21 | 2016-04-27 | Bleckmann GmbH & Co. KG | Heating system component and method for producing same |
| CN104814706B (en) * | 2015-04-22 | 2017-08-25 | 佛山市顺德区美的洗涤电器制造有限公司 | A kind of dish-washing machine and its heating washing protection control method and device |
| ITUA20161567A1 (en) * | 2016-03-11 | 2017-09-11 | Irca Spa | COVER FOR CENTRIFUGAL PUMP |
| CN108245116B (en) * | 2018-01-30 | 2023-11-07 | 佛山市永脉家电技术开发有限公司 | High dish washer washing pump of security |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8437042U1 (en) † | 1985-03-21 | Elpag Ag Chur, Chur | Water heater | |
| US3051182A (en) * | 1957-10-04 | 1962-08-28 | George M Gibson | Fluid circulating power means for a dishwashing machine |
| DE1822618U (en) * | 1960-10-13 | 1960-12-01 | Grundstuecksverwaltungsgesells | DISHWASHING MACHINE WITH WASHING EQUIPMENT ARRANGED IN THE BOTTOM OF THE CONTAINER, IN PARTICULAR TUMBLE BLASTER. |
| DE2244275C3 (en) * | 1972-09-09 | 1975-09-04 | Frankl & Kirchner, Fabrik Fuer Elektromotoren U. Elektrische Apparate, 6830 Schwetzingen | Encapsulated collector motor for a pump unit |
| DE2938883C2 (en) * | 1979-09-26 | 1983-09-08 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Heater for heating the washing liquid in a dishwasher |
| DE3627732A1 (en) * | 1986-08-16 | 1988-02-18 | Ego Italiana | Conveying device for flowing substances, in particular wash solutions |
| DE8709756U1 (en) * | 1987-07-16 | 1988-11-10 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Dishwasher or washing machine |
| DE9010254U1 (en) * | 1990-07-06 | 1991-10-31 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Dishwasher with a motor pump |
| DE59307198D1 (en) * | 1992-09-23 | 1997-10-02 | Miele & Cie | Dishwasher with a water heater |
| US5701388A (en) † | 1994-12-22 | 1997-12-23 | Kohler Co. | Combined heater and pump |
-
1998
- 1998-11-13 DE DE19852569A patent/DE19852569A1/en not_active Ceased
-
1999
- 1999-10-30 EP EP99957271A patent/EP1047334B2/en not_active Expired - Lifetime
- 1999-10-30 AT AT99957271T patent/ATE270521T1/en active
- 1999-10-30 DE DE59909911T patent/DE59909911D1/en not_active Expired - Lifetime
- 1999-10-30 WO PCT/EP1999/008294 patent/WO2000028878A1/en active IP Right Grant
- 1999-10-30 PL PL341002A patent/PL192963B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE19852569A1 (en) | 2000-05-18 |
| EP1047334A1 (en) | 2000-11-02 |
| EP1047334B2 (en) | 2007-06-06 |
| PL341002A1 (en) | 2001-03-12 |
| PL192963B1 (en) | 2006-12-29 |
| WO2000028878A1 (en) | 2000-05-25 |
| DE59909911D1 (en) | 2004-08-12 |
| ATE270521T1 (en) | 2004-07-15 |
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