EP1245833A1 - Centrifugal pump spiral with integrated two-sided header and coaxial air separator-filter wet well - Google Patents

Centrifugal pump spiral with integrated two-sided header and coaxial air separator-filter wet well Download PDF

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Publication number
EP1245833A1
EP1245833A1 EP01130582A EP01130582A EP1245833A1 EP 1245833 A1 EP1245833 A1 EP 1245833A1 EP 01130582 A EP01130582 A EP 01130582A EP 01130582 A EP01130582 A EP 01130582A EP 1245833 A1 EP1245833 A1 EP 1245833A1
Authority
EP
European Patent Office
Prior art keywords
wet well
spiral
filter
water
separator
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.)
Granted
Application number
EP01130582A
Other languages
German (de)
French (fr)
Other versions
EP1245833B1 (en
Inventor
Alberto Spaggiari
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Otma SNC Di Spaggiari E Nasi
Original Assignee
Otma SNC Di Spaggiari E Nasi
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Filing date
Publication date
Application filed by Otma SNC Di Spaggiari E Nasi filed Critical Otma SNC Di Spaggiari E Nasi
Publication of EP1245833A1 publication Critical patent/EP1245833A1/en
Application granted granted Critical
Publication of EP1245833B1 publication Critical patent/EP1245833B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps

Definitions

  • the invented apparatus refers to a new change into the centrifugal pump spiral in particular to be used inside the suspended boilers for the indipendent heating of rooms and for the sanitary hot water production, both for inside than outside use.
  • the new apparatus integrates into a single body, to be actuated by molding, injection, fusion, forming the pump spiral in its conventional winding form, a two-sided header so to indifferently made a quick link both from the left side than from right one of the multiworking hydraulic groups and a air separator-filter wet well, coaxial with the pump vertical axis, to be actuated to have a high capacity of harvest and separation of the air contained into the heating plants and to be shaped, re-entering in its lower part, to contain the depth encumbrance.
  • the invented apparatus permits to the wall boiler makers to have available a single body equipped also with the pump motor and comprising the automatic floating valve and the safety valve against the overpressures. It realizes: a) an encumbrance reduction thanks to the high integration with consequent an encumbrance dimension compaction of the same boilers; b) a reduction both of the production costs, being provided the use of composite (engineering resins) alternatively to the conventional materials than of the operating costs actuating a considerable reduction of the electric use; c) a high integration of the operations with better performances; d) an improvement of the operating silence.
  • the invented apparatus also integrates in the spiral a conveyor element that avoids the water recirculation on the centrifuge impeller so permitting the same performance having a pump with a less power motor.
  • Said flow conveyor element is obtained inside the spiral, adjacent to the outside diameter of the centrifuge impeller and in joint with the pump exhaust duct.
  • the spirals of the centrifugal pump used in the wall boilers when they integrate an air separator it is usually off-line in comparison with the vertical axis of the pump and moreover they have a single hydraulic entrance connection so needing to have the additional elements to have the function of hydraulic interfaces.
  • a three-way valve is provided in some embodiments.
  • the invented apparatus consists of a single body A-B forming the centrifugal pump spiral having in its lower part the hydraulic collector A which is expanding, in the upper part, back to the spiral, in a coaxial air-separator filter wet well B.
  • Said hydraulic collector A is formed by water input channelling with inlets 1a, 2a, 3a and 4a of which the inlets 1a and 4a with only one connection way while the inlets 2a and 3a to be reversible so to be connected on one of the two sides on the base of the plant necessities.
  • the spiral 7b is provided with a conveyor element 8b having necessary dimension and to be placed near the outside diameter of the centrifugal impeller beginning to the inizial point 9b so avoiding the water recirculation.
  • the invented apparatus is illustated in indicative way in the drawings of sheets 1, 2, 3 and 4 where sheets 1, 2 and 3 show the basic version of the apparatus while sheet 4 shows the apparatus where the spiral 7b is provided with the conveyor element 8b.
  • sheet 1 fig. 1 is overall side view of the apparatus A-B with underlying the hydraulic collector and in the upper part the air separator-filter wet well. Fig.
  • FIG. 2 is frontal view of the same overall apparatus A-B with the centrifugal impeller C and with direction arrows from the inlet conduit 3b to the outlet conduit 4b.
  • sheet 2 fig. 3 is longitudinal secion view B-B of the wet well upper part.
  • Fig. 4 is transversal section view A-A.
  • sheet 3 fig. 5 is perspective view of the overall apparatus A-B.
  • sheet 4 fig. 6 is frontal view in the version with the conveyor element 8b.
  • the fig. 7 is perspective view of the overall apparatus A-B in the version with the conveyor element 8b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Cyclones (AREA)

Abstract

A single body A-B is provided forming the centrifugal pump spiral having in its lower part a hydraulic collector A which is expanding in the upper part, back to the spiral, in a coaxial air-separator filter wet well B. Said hydraulic collector A is formed by water input channelling with inlets (1a and 4a) with only one connection way and inlets (2a and 3a) to be reversible. The water from the different inlets coming in the collector A, goes to canalized to the wet well B in upper position with its inside space longitudinally divided by an air separator-filter (1b) and transversally by a separator element (2b). The mixture water/air inside the wet well B is divided such the water for induced intake from the centrifugal impeller C, crosses the filter (1b), arrives in the spiral through the conduit (3b) and goes out from the inlet/outlet conduit (4b) while the air comes to flow in the upper part (5b) with bigger volume to then goes out from the thermal relief (6b).

Description

  • The invented apparatus refers to a new change into the centrifugal pump spiral in particular to be used inside the suspended boilers for the indipendent heating of rooms and for the sanitary hot water production, both for inside than outside use. The new apparatus integrates into a single body, to be actuated by molding, injection, fusion, forming the pump spiral in its conventional winding form, a two-sided header so to indifferently made a quick link both from the left side than from right one of the multiworking hydraulic groups and a air separator-filter wet well, coaxial with the pump vertical axis, to be actuated to have a high capacity of harvest and separation of the air contained into the heating plants and to be shaped, re-entering in its lower part, to contain the depth encumbrance. The invented apparatus permits to the wall boiler makers to have available a single body equipped also with the pump motor and comprising the automatic floating valve and the safety valve against the overpressures. It realizes: a) an encumbrance reduction thanks to the high integration with consequent an encumbrance dimension compaction of the same boilers; b) a reduction both of the production costs, being provided the use of composite (engineering resins) alternatively to the conventional materials than of the operating costs actuating a considerable reduction of the electric use; c) a high integration of the operations with better performances; d) an improvement of the operating silence. In a particular embodiment the invented apparatus also integrates in the spiral a conveyor element that avoids the water recirculation on the centrifuge impeller so permitting the same performance having a pump with a less power motor. Said flow conveyor element is obtained inside the spiral, adjacent to the outside diameter of the centrifuge impeller and in joint with the pump exhaust duct. Currently the spirals of the centrifugal pump used in the wall boilers when they integrate an air separator it is usually off-line in comparison with the vertical axis of the pump and moreover they have a single hydraulic entrance connection so needing to have the additional elements to have the function of hydraulic interfaces. Moreover in some embodiments is provided the integration of a three-way valve. The above cited situation determines an increasing of the production costs, makes more difficult the ordinary operational maintenance and bars the possibility to compact within bounds the dimension of the boilers for the inevitable bigger encumbrance due to the low integration of the part in a single block. Moreover the air separator placed in off-line position in comparison with the vertical axis of the pump entrance/exhaust connections has a working less efficient in comparison with the coaxial position for the inevitable tortuosites of the water way that do not favour but they disturb the separation and the harvest of the air into the outlet well. While the pump spirals that integrated the three way deviating valve are disadvantageous from the cost point of view and of the encumbrances, of course bigger, in the use for the wall boilers for the only rooms heating. Moreover currently in some cases it is necessary to provide the strengthening of the motors which move the centrifugal spiral to improve the hydraulic performances. This necessity is avoided using the invented apparatus in the embodiment with flow conveyor element. The invented apparatus consists of a single body A-B forming the centrifugal pump spiral having in its lower part the hydraulic collector A which is expanding, in the upper part, back to the spiral, in a coaxial air-separator filter wet well B. Said hydraulic collector A is formed by water input channelling with inlets 1a, 2a, 3a and 4a of which the inlets 1a and 4a with only one connection way while the inlets 2a and 3a to be reversible so to be connected on one of the two sides on the base of the plant necessities. The water, coming in the collector A from the different inlets, goes to canalized to the wet well B to be provided in the upper position where the inside space is longitudinally divided by a air separator-filter 1b and transversally by a separator element 2b. The mixture water/air, coming into the wet well B, is divided such the water for induced intake from the centrifugal impeller C, crosses the filter 1b, arrives in the spiral through the conduit 3b and goes out from the inlet/outlet conduit 4b while the air comes to flow in the upper part 5b with bigger volume to then goes out from the thermal relief 6b located inside the wet well 5b. In a particular embodiment the spiral 7b is provided with a conveyor element 8b having necessary dimension and to be placed near the outside diameter of the centrifugal impeller beginning to the inizial point 9b so avoiding the water recirculation. The invented apparatus is illustated in indicative way in the drawings of sheets 1, 2, 3 and 4 where sheets 1, 2 and 3 show the basic version of the apparatus while sheet 4 shows the apparatus where the spiral 7b is provided with the conveyor element 8b. In sheet 1 fig. 1 is overall side view of the apparatus A-B with underlying the hydraulic collector and in the upper part the air separator-filter wet well. Fig. 2 is frontal view of the same overall apparatus A-B with the centrifugal impeller C and with direction arrows from the inlet conduit 3b to the outlet conduit 4b. In sheet 2 fig. 3 is longitudinal secion view B-B of the wet well upper part. Fig. 4 is transversal section view A-A. In sheet 3 fig. 5 is perspective view of the overall apparatus A-B. In sheet 4 fig. 6 is frontal view in the version with the conveyor element 8b. The fig. 7 is perspective view of the overall apparatus A-B in the version with the conveyor element 8b.

Claims (2)

  1. Apparatus integrating into the centrifugal pump spiral a two-sided header and a coaxial air separator-filter wet well consists of a single body A-B forming the centrifugal pump spiral; characterized in that
    it has in its lower part a hydraulic collector A which is expanding, in the upper part, back to the spiral, in a coaxial air-separator filter wet well B obtaining a big encumbrance reduction in the total spaces; and that
    the hydraulic collector A is formed by water input channelling with inlets (1a and 4a) with only one connection way and inlets (2a and 3a) to be reversible so to be connected on one of the two sides without necessity of hydraulic interfaces for the quick connection of the multiworking groups; and that
    the water, coming in the collector A, goes to canalized to the wet well B with the inside space longitudinally divided by an air separator-filter (1b) and transversally by a separator element (2b); the mixture water/air, coming into the wet well B, is divided such the water for induced intake from the centrifugal impeller C, crosses the filter (1b), arrives in the spiral through the conduit (3b) and goes out from the inlet/outlet conduit (4b) while the air comes to flow in the upper part (5b) with bigger volume to then goes out from the thermal relief (6b) located inside the wet well (5b).
  2. Apparatus integrating into the centrifugal pump spiral a two-sided header and a coaxial air separator-filter wet well, as per claim 1, characterized in that in an embodiment the spiral (7b) is provided with a conveyor element (8b) having necessary dimension and to be placed near the outside diameter of the centrifugal impeller C beginning to the initial point (9b) in connection with the inlet conduit so avoiding the water recirculation, having a big improvement of the hydraulic performances that permits the use of motors with less power so obtaining a reduction of the energy uses and more silence in the working.
EP01130582A 2001-03-30 2001-12-21 Centrifugal pump spiral with integrated two-sided header and coaxial air separator-filter wet well Expired - Lifetime EP1245833B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO010188 2001-03-30
IT2001BO000188A ITBO20010188A1 (en) 2001-03-30 2001-03-30 INTEGRATING APPARATUS IN THE DESIRE OF A CENTRIFUGAL PUMP AN AMBIDEXTROUS HYDRAULIC COLLECTOR AND A COAXIAL AIR FILTER / SEPARATOR

Publications (2)

Publication Number Publication Date
EP1245833A1 true EP1245833A1 (en) 2002-10-02
EP1245833B1 EP1245833B1 (en) 2004-08-25

Family

ID=11439233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01130582A Expired - Lifetime EP1245833B1 (en) 2001-03-30 2001-12-21 Centrifugal pump spiral with integrated two-sided header and coaxial air separator-filter wet well

Country Status (4)

Country Link
EP (1) EP1245833B1 (en)
AT (1) ATE274644T1 (en)
DE (1) DE60105118T2 (en)
IT (1) ITBO20010188A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973871A (en) * 1973-10-26 1976-08-10 Ateliers De Constructions Electriques De Charlerol (Acec) Sump pump
US4676065A (en) * 1985-03-04 1987-06-30 Hale Fire Pump Company Portable engine-pump assembly
EP0314659A2 (en) * 1987-10-26 1989-05-03 Kvaerner-Eureka A/S A vertical submersible pump assembly
EP0619070A2 (en) * 1993-04-07 1994-10-12 HYDOR S.r.l. External filtration device particularly for aquariums and ornamental water tanks

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973871A (en) * 1973-10-26 1976-08-10 Ateliers De Constructions Electriques De Charlerol (Acec) Sump pump
US4676065A (en) * 1985-03-04 1987-06-30 Hale Fire Pump Company Portable engine-pump assembly
EP0314659A2 (en) * 1987-10-26 1989-05-03 Kvaerner-Eureka A/S A vertical submersible pump assembly
EP0619070A2 (en) * 1993-04-07 1994-10-12 HYDOR S.r.l. External filtration device particularly for aquariums and ornamental water tanks

Also Published As

Publication number Publication date
DE60105118D1 (en) 2004-09-30
DE60105118T2 (en) 2005-03-31
ATE274644T1 (en) 2004-09-15
EP1245833B1 (en) 2004-08-25
ITBO20010188A0 (en) 2001-03-30
ITBO20010188A1 (en) 2002-09-30

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