CN104912815A

CN104912815A - Pump device

Info

Publication number: CN104912815A
Application number: CN201510105198.4A
Authority: CN
Inventors: M·温塞尔
Original assignee: Hanning Elektro Werke GmbH and Co KG
Current assignee: Hanning Elektro Werke GmbH and Co KG
Priority date: 2014-03-12
Filing date: 2015-03-11
Publication date: 2015-09-16
Also published as: DE102015102808A1

Abstract

The present invention relates to a pump device for transmitting liquid in a home appliance. The pump device has a drive apparatus comprising a stator, a rotor rotatablely disposed with respect to the stator, a shaft for supporting the rotor and a gap pipe. The gap pipe has a gap pipe pot-shaped portion surrounding the pipe rotor at the periphery side and a gap pipe flange protruding from the gap pipe pot-shaped portion. The pump device has a rotor wheel maintained on a shaft and pump housing having a transmitting space arranged at the rotor wheel, an input connecting pipe for inputting liquid to the transmitting space, a pressure connecting pipe for outputting liquid from the transmitting space. And the pump device has a sealing device through which the pump housing is sealed with respect to the gas pipe, a bypass is constructed in the pump housing and/or gas pipe areas so that liquid to be transmitted is partly transmitted to the hydraulic space formed at the back of the rotor wheel, and then to the transmitting space from the axial gap formed between the rotor wheel and the pump housing in the hydraulic space.

Description

Pump-unit

Technical field

The present invention relates to a kind of pump-unit, it is for carrying home appliances, especially the liquid in washing machine, described pump-unit has drive unit, described drive unit comprises stator, relative to the rotor that stator is rotatably arranged, the axle of supporting rotor and gas tube, described gas tube has the gas tube tank shape portion and the gas tube flange outstanding from gas tube tank shape portion that surround pipe rotor in side face side, described pump-unit has the rotor wheel kept on axle, described pump-unit has pump case, described pump case comprises the conveying space being wherein provided with rotor wheel, for the input adapter that liquid is input in conveying space be used for the pressure tap that exported from conveying space by liquid, and described pump-unit has seal arrangement, by described seal arrangement, pump case seals relative to gas tube.

Background technique

The usual impurity of pump-unit of the conveying liquid in home appliances is compatibly formed like this, make with the impurity of Liquid transfer, such as dirt, silk thread or hair as far as possible not negative effect pump-unit function or cause shutting down of pump-unit.Such as known, the rotor wheel of pump-unit is supported on axle or flexibly movingly and designs.Improve respectively to impurity, especially with the tolerance of the solid of Liquid transfer.In addition known, in order to protect to prevent silk thread or hair preposition embedded body in the input adapter of pump-unit, described embedded body has catches lug boss for reaching of silk thread or hair in fluid passage.So the silk thread inputted with liquid or hair are captured and do not arrive in the conveying space of pump-unit on lug boss.Embedded body constructs removedly and can here regularly be cleaned in the scope of maintenance.

Summary of the invention

Task of the present invention is, the impurity improving pump-unit is further compatible.Especially the compatibility for the silk thread arrived in conveying space or hair should be improved.

In order to solve this task, the present invention is in conjunction with the feature of the preamble of claim 1, in the region of pump case and/or gas tube, form the bypass of hydraulic pressure like this, make a part for the liquid that must carry be transported to the axial clearance passing through to be formed between rotor wheel and pump case in the space of the hydraulic pressure formed of rotor wheel and from the space of hydraulic pressure below and flow in conveying space.

The present invention is special, and advantage is, due to the bypass of hydraulic pressure, liquid is flow in conveying space by the axial clearance formed between rotor wheel and pump case.Here stop, impurity in contrast to the flow direction of liquid arrive rotor wheel below and adversely affect the function of pump-unit.Especially stop, silk thread or hair or other thread impurity being wound around around the axle rotated below in rotor wheel.

Core of the present invention here, is stopped silk thread by the liquid flow resistance forming orientation and is entered in the space of the hydraulic pressure formed below in rotor wheel.Liquid stream realizes by bypass like this at this, and the liquid originally carried by pump-unit is partly commutated in the space of the hydraulic pressure formed below in rotor wheel.So be transported to liquid in the space of hydraulic pressure by bypass back to be flow in the conveying space of pump-unit by the axial clearance between the rotor wheel that rotates and fixed pump shell and again to flow to conveying loop.

The volume flowrate of being carried by bypass is generally less than the delivered volume flow of pump-unit.The delivered volume flow of such as pump-unit with 10 or larger factor, preferably with 25 or larger factor and be particularly preferably greater than the volume flowrate of being carried by the bypass of hydraulic pressure with the factor of 50 or larger.

According to the preferred form of implementation of one of the present invention, pump case multi-part type ground is formed, and wherein arranges and surrounds the pump case main body of conveying space and the locking body of supporting sealing device.Locking body surrounds axle and arranges between rotor wheel and rotor.The space of the hydraulic pressure especially formed as the part of the bypass of hydraulic pressure is formed and is limited by locking body after rotor wheel.In order to make liquid flow in the space of hydraulic pressure, locking body arranges at least one inlet opening.Produce advantageously compact structure form thus.The bypass of hydraulic pressure spatially and is functionally integrated in pump-unit, thus does not produce or produce at most the structure space demand of little raising.

Arrange according to a kind of further formation of the present invention with the flow container of the liquid filling that will carry, described flow container configures to stator or gas tube and derives the heat of stator.Flow container is arranged like this as the part of the bypass of hydraulic pressure, is flowed through when making described flow container below in the space of Liquid transfer to the hydraulic pressure formed in rotor wheel.Owing to flowing through flow container, advantageously improve the fluid exchange just in time in flow container, this causes improving transporting of heat further.The bypass of hydraulic pressure simultaneously utilizes the connection of the hydraulic pressure natively had between conveying space and flow container.Reduce further thus for providing structural the expending of the bypass of hydraulic pressure.In addition the space especially simplifying bypass when arranging the flow container with liquid filling is integrated.

Form further according to one of the present invention, the part that pressure tap is provided as bypass like this realize by opening, make to flow through the Liquid transfer of opening to the space of the hydraulic pressure formed in rotor wheel below.Advantageously can be through-flow by what be arranged through in pressure tap that opening improves by the liquid of bypass.The pressure of the liquid in pressure tap higher than the pressure of the liquid in the conveying space of pump-unit, thus produces the flowing by bypass.Here ensure in a straightforward manner, in bypass, form directed fluid and liquid is arrived in conveying space by the axial clearance between rotor wheel and pump case.

Form further according to one of the present invention, bypass is formed like this, liquid is taken over from flow container feed pressure, liquid flow to the gap formed between seal arrangement and locking body from flow container, and liquid to be flow in the space of the hydraulic pressure after rotor wheel by the inlet opening that arranges locking body from gap and flows to conveying space from there through radial clearance.

Form further according to one of the present invention, the dish of rotor wheel forms guiding surface at edge side, and described guiding surface inputs to pressure tap liquid according to the pattern effect and making of diversion member leaves from the axial clearance guiding formed between rotor wheel and pump case.Guiding surface inhibition of impurities as the fluid of the orientation in axial clearance arrives after rotor wheel.

Accompanying drawing explanation

Other advantage, characteristic sum details of the present invention can be drawn by other dependent claims and follow-up explanation.The feature mentioned there can individually itself be also or be important to combine arbitrarily the present invention.Accompanying drawing only plays exemplarily clarifies effect of the present invention and hard-core characteristic.

Wherein:

Fig. 1 illustrates the perspective view according to pump-unit of the present invention;

Fig. 2 illustrates the sectional drawing of the pump-unit according to Fig. 1;

Fig. 3 illustrates the details enlarged view of a part of X according to Fig. 2;

Fig. 4 illustrate the locking body of the pump-unit according to Fig. 1 perspective view and

Fig. 5 illustrates the half-sectional view of the locking body according to Fig. 4.

Embodiment

According to the seal arrangement 9 that as important component according to pump-unit 1 of the present invention there is the axle 4 of the drive unit comprising stator 2, the rotor 3 rotatably arranged relative to stator 2 and supporting rotor 3, the rotor wheel 5 that axle 4 keeps, the pump case 6 determining the conveying space 7 receiving rotor wheel 5 and gas tube 16 and arrange between gas tube 16 and pump case 6 of Fig. 1 and 2.Seal arrangement 9 is formed according to the pattern of seal membrane.Seal arrangement 9 especially has the sealing lip 10 that two V-arrangement ground are located relative to each other, and described sealing lip realizes the sealing about the axle 4 rotated.The covering device 8 being used for stator 2 is set in addition.

Pump case 6 multi-part type ground is formed.Described pump case has the pump case main body 11 of surrounding rotor wheel 5.For can be descriptive and know reason, save pump case 11 in FIG.In addition pump case 6 has the locking body 12 be arranged between rotor wheel 5 and rotor 3.Locking body 12 substantially forms and coaxially arranges with axle 4 ground in plate-like ground.

Gas tube 16 single type ground is implemented and has multiple functional area.Described gas tube have side face side surround rotor 3 gas tube tank shape portion 25, from gas tube tank shape portion 25 on the side towards rotor wheel 5 substantially radially-protruding gas tube flange 26 and configuration to the flow container 14 of stator 2.Gas tube flange 26 is connected with pump case 6 in the region of locking body 12.Flow container 14 is 15 longitudinal extensions axially.Flow container 14 is especially with the liquid filling that will carry.By arranging flow container 14, improve the cooling of the drive unit of electricity.Especially flow container 14 and the liquid arranged wherein are for cooling stator 2.

Such as to be arranged in washing machine according to pump-unit 1 of the present invention and to use as recycle pump or drain pump there.By pump-unit 1, the liquid flowing to conveying space 7 by unshowned input adapter is by pressure-loaded and exported by pressure tap 13.

Gas tube 16 passes through seal arrangement 9 locking on the side of the opening towards rotor wheel.Such as gas tube 16 can be liquid filling.As liquid can setting example as improved the mixture be made up of water and lubriation material, such as oil in the working life of bearing.

Functional in order to what improve according to pump-unit 1 of the present invention, pump-unit 1 is configured for the bypass of the hydraulic pressure of the liquid that will carry.Especially set, a part for the liquid carried by pump-unit 1 flows to the space 17 of the hydraulic pressure formed between locking body 12 and rotor wheel 5.On pump-unit 1, between pressure tap 13 and the space 17 of hydraulic pressure, form the joint of the hydraulic pressure by opening 23 form, the arrow A of contrast Fig. 3 for this reason.Liquid can here flow to flow container 14 from pressure tap 13.Flow container 14 arranges bypass clearance 18, and by described bypass clearance, the flow of fluid arranged in flow container 14, in the radial clearance 19 formed between seal arrangement 9 and locking body 12, contrasts the arrow B of Fig. 3.Locking body 12 arranges inlet opening 20, and radial clearance 19 is communicated with the space 17 of hydraulic pressure by described inlet opening.Liquid arrives (arrow C in Fig. 3) the space 17 of hydraulic pressure by inlet opening 20 from radial clearance 19.Liquid flow in the conveying space 7 of pump-unit 1 by the axial clearance 21 formed between the rotor wheel 5 and fixed pump shell 6 of run duration rotation from the space 17 of hydraulic pressure, the arrow D in contrast Fig. 3.Therefore in axial clearance 21, form fluid, described fluid inhibition of impurities enters into the space 17 of hydraulic pressure from conveying space 7.Here stoped by by-pass, especially impurity enters into the space 17 of the hydraulic pressure formed in rotor wheel 5 below as silk thread, hair or analog and is wound around around axle 4.Therefore prevent the operation of axle 4 difficulty equally and prevent the damage of seal arrangement 9 generally or particularly sealing lip 10.

The guiding surface 29 that this external rotor wheel 5 is arranged reduces the space 17 that dirt enters into hydraulic pressure.Rotor wheel 5 arranges dish 27 that level land forms as important constituent element, is installed to wheel hub 30 on axle 4 and four blades 31 arranged in circumferential distribution.Dish 17 under any circumstance roughly extends on dish 27 in a common plane with the abutment face 28 towards conveying space 7 of locking body 12.Edge side arrange around guiding surface 29.Guiding surface 29 according to diversion member pattern effect and the liquid carried towards the direction of pressure tap 13 by pump-unit is guided leave axial clearance 21.Here guiding surface 29 also provides directed fluid, and described fluid stops impurity to arrive in the space of the hydraulic pressure formed in rotor wheel 5 below.

Fig. 5 and 6 illustrates the detailed view of locking body 12.Locking body 12 arranges eight by opening 23 generally on periphery rule distribution ground, and described locking body is formed symmetrically about the medial axis 22 of axially 15 extensions in the state of assembling.Each is used as the hydraulic connecting between pressure tap 13 and flow container 14 by opening 23 in the state of assembling.As long as below do not arranging flow container 14, then by opening 23 locking when locking body 12 is installed on gas tube 16 by opening 23.This external locking body 12 is formed eight inlet openings 20 arranged that distribute on periphery equally, radial clearance 19 is communicated with the space 17 of hydraulic pressure by described inlet opening.The adpting flange 24 extended along the direction of medial axis 22 is for being received in locking body 12 in the space constructed accordingly of gas tube 16.On adpting flange, on periphery, distribution ground forms eight axial clearances 21 generally, and liquid is flow to conveying space 7 by the space 17 of described axial clearance from hydraulic pressure.

Claims

1. pump-unit (1), it is for carrying home appliances, especially the liquid in washing machine, described pump-unit has drive unit, described drive unit comprises stator (2), relative to the rotor (3) that stator (2) is rotatably arranged, the axle (4) of supporting rotor (3) and gas tube (16), described gas tube has the gas tube tank shape portion (25) surrounding pipe rotor (3) in side face side and the gas tube flange (26) stretched out from gas tube tank shape portion (25), described pump-unit has in the upper rotor wheel (5) kept of axle (4), described pump-unit has pump case (6), described pump case comprises the conveying space (7) being wherein provided with rotor wheel (5), for liquid being input to input adapter in conveying space (7) and pressure tap (13) for being exported from conveying space (7) by liquid, and described pump-unit has seal arrangement (9), by described seal arrangement, pump case (6) seals relative to gas tube (16), it is characterized in that, the bypass of hydraulic pressure is formed in the region of pump case (6) and/or gas tube (16), a part for the liquid that must carry is transported to flow in conveying space (7) by the axial clearance (21) formed between rotor wheel (5) and pump case (6) in the space (17) of the hydraulic pressure formed below of rotor wheel (5) and from the space (17) of hydraulic pressure.

2. according to pump-unit according to claim 1 (1), it is characterized in that, be configured with the locking body (12) of pump case main body (11) and supporting sealing device (9) pump case (6) multi-part type, described locking body surrounds axle (4) and is arranged between rotor wheel (5) and rotor (3), and/or at least one inlet opening (20) is set on locking body (12), described inlet opening is used for liquid to be input in the space (17) of the hydraulic pressure formed of rotor wheel (5) below.

3. according to the pump-unit (1) described in claim 1 or 2, it is characterized in that, be provided with at least one flow container (14), described flow container is in order to cool object and configure to stator (2) and axially (15) longitudinal extension, wherein, be used for the inlet opening (by opening 23) of liquid and the outflow opening (bypass clearance 18) for liquid upper setting of flow container (14), make to be transported to liquid stream in the space (17) of hydraulic pressure through flow container (14).

4. according to the pump-unit (1) one of claims 1 to 3 Suo Shu, it is characterized in that, pump case (6) is provided as in the region of pressure tap (13) bypass a part realize by opening (23), make the Liquid transfer flowing through opening (23) in the space (17) of the hydraulic pressure formed in rotor wheel (5) below.

5. according to the pump-unit (1) one of Claims 1-4 Suo Shu, it is characterized in that, form described bypass, liquid is made to be transported to flow container (14) from pressure tap (13), be transported to the radial clearance (19) formed between seal arrangement (9) and locking body (12) from flow container (14), be transported to the space (17) of hydraulic pressure and from the space (17) of hydraulic pressure from radial clearance (19) and be transported to conveying space (7) by axial clearance (21).

6. according to the pump-unit (1) one of claim 1 to 5 Suo Shu, it is characterized in that, the dish (27) of rotor wheel (5) and the abutment face (28) of locking body (12) extend in common plane, or by dish (27) the first plane of determining and form axially that (15) determine therewith between the second plane that is parallel, that determined by the abutment face (28) of locking body (12) be less than 15mm, be preferably less than 10mm and be particularly preferably less than the distance of 5mm.

7. according to the pump-unit (1) one of claim 1 to 7 Suo Shu, it is characterized in that, dish (27) is provided with guiding surface (29) at edge side, and described guiding surface radial ring forms around ground and/or implements according to the pattern of the diversion member making liquid commutate.