CN101208519A

CN101208519A - Waterpump

Info

Publication number: CN101208519A
Application number: CNA2006800231211A
Authority: CN
Inventors: A·汉克; D·布鲁内; I·格达尼茨
Original assignee: Oase Pumpen Wuebker Soehne GmbH and Co Maschinenfabrik
Current assignee: Oase Pumpen Wuebker Soehne GmbH and Co Maschinenfabrik
Priority date: 2006-02-27
Filing date: 2006-12-19
Publication date: 2008-06-25
Anticipated expiration: 2026-12-19
Also published as: EP1886026B1; EP1886026A1; WO2007098800A1; CN101208519B; DE102006009495A1; ATE453052T1; DE502006005730D1; US20090004020A1; CA2612471A1

Abstract

In a water pump comprising a pump housing (1) which has a water inlet (3) and a water outlet (4) and in which a driven pump impeller (5) is arranged, the pump impeller (5) is designed according to the invention as a diagonal impeller having an essentially conical cover disc (6). The water inlet (3) and the water outlet (4) are preferably arranged in such a way that the water inflow direction and the water outflow direction are essentially perpendicular to one another. The leading blade edges (8) of the impeller blades (9) should preferably run in a diagonal direction and parallel to the water flow and form a sealing gap (10) with the inner contour of the pump housing (1).

Description

Water pump

Technical field

The present invention relates to a kind of water pump that especially is used in pond, garden and hydrobiose zone as described in the preamble by claim 1.

Background technique

In the reality in this field pump use always, they have the radially active wheel of motor driven, make water to be aspirated with 90 ° angle of yaw deflection.Thereby pump makes the requirement in corresponding layout become rationally, therefore must carry out about 90 ° deflection usually.Though this water pump produces quite high discharge pressure, has relatively little delivery volume.If realize big delivery volume with this pump, so essential power consumpiton is very high.

Summary of the invention

Therefore the objective of the invention is to, realize a kind of water pump that has the efficient of improvement in view of delivery volume.This purpose solves by the water pump of the feature of the present invention by having claim 1.

By the pump wheel that adopts to constitute the diagonal flow type active wheel of shrouding disc with taper basically, flow by active wheel guiding diagonally, and the less angle of deflection of comparing with the radial-flow type active wheel.Therefore the deflection loss keeps less and efficient is more favourable when carrying big water quantity.The pump of Gou Chenging has following advantage like this, promptly carries the water of more volumes in less pressure.Therefore preferably this pump is used in the filter plant, the little pressure of there, but high volume flow is essential.Consume much smaller power by pump of the present invention than above-mentioned known pump by the efficient of improving with radial-flow type active wheel.Compare with pump also and can obviously constitute more compactly by pump of the present invention with its big volumetric efficiency with traditional active wheel.In order to obtain identical volume flow, the diameter of conventional operation wheel must be big 1.5 times.Compact structure form by pump of the present invention also allows especially cheap manufacturing, because only need relatively little instrument, especially injection moulding tool.

Description of drawings

Other advantage and details are obtained by the form of implementation of describing in each accompanying drawing of dependent claims and explained later, wherein:

Fig. 1 presses water pump of the present invention with the form demonstration of longitudinal section,

Fig. 2 manifests the pump wheel of the pump of Fig. 1 with the form of the exploded view of perspective.

Embodiment

The water pump of describing have a pump case 1 with one with its motor casing that is connected hermetically 2, they constitute total housing of pump each other.Pump case 1 has a feed-water end 3 and a waterexit end 4, and this waterexit end preferably is arranged on the upside of pump case in central authorities.Inside in pump case 1 is provided with the pump wheel 5 that constitutes the diagonal flow type active wheel between feed-water end 3 and waterexit end 4.This pump wheel is had an X-rayed the ground expression in Fig. 2.

Pump wheel 5 has a shrouding disc 6 of taper basically by the present invention, guides diagonally by arrow 7 expression ground by these shrouding disc current and passes through pump case.In the acting in conjunction of the layout of feed-water end 3 that preferably is perpendicular to one another basically and waterexit end 4 and shape, current 7 are approximately to leave pump with respect to the direction of 90 ° of the deflections of current approach axis.The shrouding disc 6 of pump wheel 5 constitutes preferred 80 ° to 100 ° cone angle.Therefore realize the deflect flow of optimization, and reduce flow losses.

The form of implementation of describing is especially favourable, because the blade seamed edge 8 of the front of runner vane 9 extends along diagonal, the surface that is parallel to water (flow) direction 7 and is parallel to shrouding disc 6.Therefore runner vane 9 can adapt to the profile of fixed pump housing 1, makes them constitute seal clearance 10 at there.In this special structural type, also can be implemented in narrow seal clearance 10 between the pump wheel 5 of fixed pump housing 1 and rotation with the standard of tolerance of member.Thereby this causes little internal leakage stream and the efficient of the hydraulic pressure that causes improving.Pump can constitute especially compactly, if seal clearance 10 is arranged in the transition region between feed-water end 3 and the waterexit end 4.

The pump of the form of implementation of describing is optimized in view of its flow characteristic and its work quietness, and wherein the shrouding disc 6 of runner vane 9 with aerofoil profile profile (Tragfl  chenprofil) and pump wheel 5 has the end 13 of the back of a blade-like.This external pump wheel 5 meet the good following realization of Flow Distribution in the stream, promptly runner vane 9 meets the inflow direction ground orientation that stream seamed edge 14 is substantially perpendicular to the water feed-water end 3 in.

Center at the awl point of the shrouding disc 6 of pump wheel 5 preferably is provided with a through hole 15 or a hole, and it is used for cooling and ventilation purpose.

Especially at an easy rate pump wheel 5 can create moulding.In order to optimize sealing and sliding properties, be used as the metal ring of supporting base in this preferred injection moulding together.Metal ring 16 form with exploded view in Fig. 2 shows in the back of work wheel shaft 17, still is arranged on the inside of work wheel shaft 17 in the member of finished product.Be bearing on the electric motor 18 by metal ring 16 pump wheels 5, it drives this pump wheel rotatably.

Because its compact structure mode, its high transfer efficiency and its are suitable in this little power consumpiton to mainly first-class for the recycle pump in following use field, continuous service is necessary in these use fields by water pump of the present invention.Can realize tangible energy-efficient with respect to traditional pump.

Claims

1. water pump, comprise a pump case (1) with feed-water end (3) and waterexit end (4), a driven pump wheel (5) is set in pump case, it is characterized in that: pump wheel (5) constitutes the diagonal flow type active wheel of the shrouding disc (6) with taper basically.

2. by the described water pump of claim 1, it is characterized in that: feed-water end (3) and waterexit end (4) are provided with like this, make current Inbound and current outgoing direction be perpendicular to one another basically.

3. by each described water pump of aforesaid right requirement, it is characterized in that: the blade seamed edge (8) of the front of runner vane (9) extends along diagonal.

4. by each described water pump of aforesaid right requirement, it is characterized in that: the blade seamed edge (8) of the front of runner vane (9) is parallel to current ground and extends.

5. by each described water pump of aforesaid right requirement, it is characterized in that: the blade seamed edge (8) of the front of runner vane (9) constitutes a seal clearance (10) with the in-profile of pump case (1).

6. by the described water pump of claim 5, it is characterized in that: seal clearance (10) is arranged in the transition region between feed-water end (3) and waterexit end (4).

7. by each described water pump of aforesaid right requirement, it is characterized in that: runner vane (9) has an aerofoil profile profile.

8. by each described water pump of aforesaid right requirement, it is characterized in that: the shrouding disc (6) of pump wheel (5) has the end (13) of the back of a blade-like.

9. by each described water pump of aforesaid right requirement, it is characterized in that: the shrouding disc (6) of pump wheel (5) has a through hole (15) in the awl point.

10. by each described water pump of aforesaid right requirement, it is characterized in that: the shrouding disc (6) of pump wheel (5) has 80 ° to 100 ° cone angle (α).

11. by each described water pump of aforesaid right requirement, it is characterized in that: pump wheel (5) is a moulding, and has at least one by other materials especially metal ring that constitute, die casting (6).

12. by each described water pump of aforesaid right requirement, it is characterized in that: waterexit end (4) are arranged on the upside of pump case (1) in central authorities basically.