Pump housing

Patent metadata

Field	Value
Publication number	US-9863436-B2
Application number	US-201314377282-A
Country	US
Kind code	B2
Filing date	Jan 17, 2013
Priority date	Feb 8, 2012
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

A pump housing has a spiral housing and includes a suction channel ( 14 ) which runs out in a space ( 15 ). The space ( 15 ) is for arranging an impeller ( 6 ), rotatable about a rotation axis ( 5 ), and includes a spirally peripheral channel ( 16 ) open to the space ( 15 ) and running out into a pressure channel. A receiver ( 20 ) for a differential pressure sensor is provided within the pump housing. A first sensor channel ( 22 ) is provided, which connects the receiver ( 20 ) to a pressure-side interior of the pump housing. A second sensor channel ( 23 ) connects the receiver ( 20 ) to the pressure-side interior of the pump housing. The receiver ( 20 ) for the differential pressure sensor is arranged between the spirally peripheral channel ( 16 ) and the suction channel ( 14 ), so that the channels can be formed by way of simple bores.

First claim

The invention claimed is:

1. A pump housing of the spiral housing construction type, the pump housing comprising:
a pressure channel;
an impeller space;
a suction channel running out into the impeller space, which is designed for arranging an impeller rotatable about a rotation axis, wherein the impeller space comprises a spirally shaped peripheral channel open from a portion of the impeller space and running out into the pressure channel;
a receiver for a differential pressure sensor;
a first sensor channel which connects the receiver to a suction-side interior of the pump housing; and
a second sensor channel which connects the receiver to a pressure-side interior of the pump housing, wherein the receiver for the differential pressure sensor is arranged between the spirally peripheral channel and the suction channel, and the second sensor channel ends in the spirally shaped peripheral channel, the second sensor channel being formed by a bore, wherein the bore forming the second sensor channel is manufactured through a housing opening, with which housing opening the pump housing connects to a motor housing and through which housing opening the impeller is introduced into the pump housing.

2. A pump housing according to claim 1 , wherein the first sensor channels is formed by another bore in the housing.

3. A pump housing according to claim 1 , wherein the receiver is formed by another bore in the housing.

4. A pump housing according to claim 3 , wherein the second sensor channel runs out transversely to the another bore forming the receiver.

5. A pump housing according to claim 3 , wherein:
the first sensor channel is formed by a portion of the another bore;
the portion of the another bore forming the first sensor channel is arranged in a continuation of the another bore forming the receiver in a manner aligned to the another bore forming the receiver.

6. A pump housing according to claim 1 , wherein the first sensor channel is arranged essentially perpendicularly to the rotation axis of the impeller.

7. A pump housing according to claim 1 , wherein the second sensor channel is arranged essentially parallel to the rotation axis of the impeller.

8. A pump housing according to claim 1 , wherein the second sensor channel runs out in a pressure-side peripheral region of the impeller.

9. A pump housing according to claim 1 , wherein the second sensor channel runs at an end of the spirally peripheral channel which runs out into the pressure channel.

10. A pump housing according to claim 1 , wherein the bore forming the second sensor channel is led through a wall covering the impeller, the wall being on a diametrically opposite side of the impeller space relative to the housing opening.

11. A pump housing according to claim 1 , wherein:
the bore forming the second sensor channel is drilled into the pump housing from the outside.

12. A pump housing according to claim 1 , wherein:
the receiver is formed by another bore in the housing;
a plane surface extending transversely to a bore axis of the receiver is provided on an outer end of the another bore forming the receiver.

13. A pump housing according to claim 12 , wherein a threaded bore is provided in the plane surface, parallel to the bore axis of the receiver.

14. A pump housing according to claim 13 , wherein: a support is formed by a groove and is for one end of a holding bracket for a sensor housing receiving the differential pressure sensor;
the support is formed next to the plane surface and perpendicularly thereto; and
another end of said holding bracket can be fastened in the threaded bore by way of a screw.

15. A pump housing according to claim 1 , further comprising a sealing cap, wherein the differential pressure sensor is inserted into another bore forming the receiver amid an integration of the sealing cap.

16. A pump housing according to claim 14 , wherein the differential pressure sensor is arranged in a projecting section of the sensor housing which is seated on the plane surface, projects with the projecting section into the another bore forming the receiver and is fastened on the plane surface on the housing by way of the holding bracket.

17. A pump housing according claim 1 , in combination with an impeller to form a wet-running centrifugal pump, with the impeller rotatably mounted in the pump housing.

18. A pump housing of the spiral housing construction type, the pump housing comprising:
a pressure channel;
an impeller space;
a suction channel running out into the impeller space, which is designed for arranging an impeller rotatable about a rotation axis, wherein the impeller space comprises a spirally shaped peripheral channel open from a portion of the impeller space and running out into the pressure channel;
a receiver for a differential pressure sensor;
a first sensor channel which connects the receiver to a suction-side interior of the pump housing; and
a second sensor channel which connects the receiver to a pressure-side interior of the pump housing, wherein the receiver for the differential pressure sensor is arranged between the spirally peripheral channel and the suction channel, and the second sensor channel ends in the spirally shaped peripheral channel, the receiver being formed by a bore in the housing, wherein a plane surface extending transversely to a bore axis of the receiver is provided on an outer end of the bore forming the receiver, wherein a threaded bore is provided in the plane surface, parallel to the bore axis of the receiver, wherein a support is formed by a groove and is for one end of a holding bracket for a sensor housing receiving the differential pressure sensor, the support being formed next to the plane surface and perpendicularly thereto, wherein another end of the holding bracket can be fastened in the threaded bore by way of a screw.

19. A pump housing of the spiral housing construction type, the pump housing comprising:
a pressure channel;
an impeller space;
a suction channel running out into the impeller space, which is designed for arranging an impeller rotatable about a rotation axis, wherein the impeller space comprises a spirally shaped peripheral channel open from a portion of the impeller space and running out into the pressure channel;
a receiver for a differential pressure sensor;
a first sensor channel which connects the receiver to a suction-side interior of the pump housing; and
a second sensor channel which connects the receiver to a pressure-side interior of the pump housing, wherein the receiver for the differential pressure sensor is arranged between the spirally peripheral channel and the suction channel, and the second sensor channel ends in the spirally shaped peripheral channel, the receiver being formed by a bore in the housing, wherein a plane surface extending transversely to a bore axis of the receiver is provided on an outer end of the bore forming the receiver, wherein a threaded bore is provided in the plane surface, parallel to the bore axis of the receiver, wherein a support is formed by a groove and is for one end of a holding bracket for a sensor housing receiving the differential pressure sensor, the support being formed next to the plane surface and perpendicularly thereto, wherein another end of the holding bracket can be fastened in the threaded bore by way of a screw, the differential pressure sensor being arranged in a projecting section of the sensor housing which is seated on the plane surface, projects with the projecting section into the bore forming the receiver and is

Assignees

• Grundfos Holding As

Inventors

• Pedersen Casper
• Pedersen Nicholas

Classifications

• F04D29/428 Primary

  Discharge tongues (F04D17/04 takes precedence) · CPC title

• F04D15/0088 Primary

  Testing machines · CPC title

• F04D29/426

  especially adapted for liquid pumps · CPC title

• F04D1/00

  Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (adapted for pumping specific fluids F04D7/00; priming or boosting F04D9/00) · CPC title