CN1134580C - Pool cleaner - Google Patents

Abstract

A pool cleaner which includes a body (10), at least one passage (40) which extends through the body with an inlet (42) on the passage (40) and an outlet (44) from the passage at respective opposed ends of the passage having a minimum cross-sectional area at a position selected from the inlet (42), the outlet (44), and a location between the inlet and the outlet, the cross-sectional area of the passage in each direction extending away the said selection position towards each respective end (36, 38) of the passage monotonically increasing in magnitude.

Description

Pool cleaner

Background of invention

The present invention relates to a kind of pool cleaner.

US 5 737 791 announces a kind of pool cleaner that has a housing, forms the passage that a band has constraint throat in this housing.The valve member of a gate form laterally stretches to this throat, and can move, so that stop liquid stream by this throat.But this valve body neither is positioned at this channel interior, also is not positioned at this throat.

The invention summary

The present invention at first relates to a kind of pool cleaner housing, and this housing is easy to make as an integral structure component.

The intrinsic property of the pool cleaner housing of an integral body is to contain flotation gear at housing.The applicant has been found that this characteristics can be used to produce important advantage, thereby second aspect of the present invention relates to the buoyant member that these advantages are produced.

For reaching above-mentioned purpose with other, the present invention proposes a kind of pool cleaner, it comprises a housing and at least one passage by this housing, liquid stream interrupting device in an inlet that leads to this passage and outlet of leaving this passage and this passage is arranged respectively on the relative termination of this passage, this passage has a smallest cross-section area, its position enters the mouth from this, this outlet, and selected in the place between this inlet and this outlet, the cross-sectional area of this passage stretches simultaneously increase monotonously in size along each direction of leaving described select location to each corresponding termination of this passage.

Use " dullness " speech herein, mean this passage and take up an official post the cross-sectional area where put all more than or equal to this cross-sectional area that adjoins and leave the smallest cross-section area position on this passage with this place.Therefore, though this cross-sectional area may not increase in its length of assigned direction upper edge, it never reduces.This just makes this passage be used one independent no anyly to hinder recess that this plug withdraws from or the plug of step forms a passage from passage.

The described position of this smallest cross-section area is preferably in this exit.This just can use an independent plug to form this passage.On the contrary, just should use two plugs mould notes of associated movement arrival position in opposite direction.

This pool cleaner may comprise a dividing plate, this passage is divided into first and second adjoins subchannel.But this depends on the character of this cleaner.

When using this dividing plate, this dividing plate can form an integral body with the remainder of housing.This point can suitable shape reaches by investing this plug.Preferably, though the separately formation of this dividing plate and housing, and the joint of the shape in the housing, thereby being divided into described first and second, this passage adjoins subchannel.

This pool cleaner may comprise: one and this inlet adjoin and with the chamber of channel connection.Indoorly there is one can be the liquid stream interrupting device of any suitable species at this.A closure member that has at least one hole may detachably engage with this housing, this device is enclosed in this is indoor.

Form an interval between the apparent surface that the shape of this closure member preferably can flow interrupting device at the surface and the liquid of closure member, flow the maximum opens wide that in this device moves, forms between the inwall together of interrupting device and this chamber when this width at interval preferably approximates the pool cleaner use greatly at this liquid.

This closure member preferably is hemispherical or other suitable shapes, or is fixed in any suitable manner on the housing of cleaner, so that obtain above-mentioned advantage.

This cleaner may comprise the elongated shape buoyant member that stretches along this passage general direction, and its length surpasses 25% of this shell length, preferably 50% of about length for this reason.

In a modification of the present invention, this buoyant member comprises a plurality of floating members, and this floating member stretches along the general direction of passage between this inlet and this outlet and is arranged in a row, and exists between mutually at interval corresponding.

This buoyant member can separately be shaped, and imbeds in this housing when making this housing then.According to preferential aspect of the present invention, this buoyant member is to make material foaming and this housing of making this housing form an integral body when making this housing.

" foaming " of Shi Yonging herein comprises by chemical action makes this case material directly any mechanism or the technology of foaming, perhaps comprises the blowing agent by adding any suitable species or for example spray the suitable gas inflation that comprises air making this material foaming.

This housing upside when this buoyant member preferably is positioned at and uses and a side of this passage may be the direct relative sides that the bias piece of this housing part form then is positioned at this housing downside and this passage.

Brief description

The present invention further consults accompanying drawing by example and is illustrated.Wherein:

Fig. 1 is the lateral view in the pool cleaner manufacture process of the present invention;

The plug phantom drawing of Fig. 2 for using in the manufacture process;

Fig. 3 is the end-view of this pool cleaner oral area shown in Figure 1;

Fig. 4 is the viewgraph of cross-section of this pool cleaner housing of getting by Fig. 1 center line 4-4;

Fig. 5 is the dividing plate that uses in the pool cleaner of the present invention and the phantom drawing of vee-block;

Fig. 6 is the end-view of pool cleaner housing, and this housing has one and is in the cover plate that decomposes the position;

Fig. 7 is the follow-on cross-sectional side view of this swimming pool washer;

Fig. 8 is the follow-on front elevation drawing of Fig. 7;

Fig. 9 is a view of a pool cleaner housing, and this housing is with shown in Figure 1 identical, but comprises a variation of the present invention;

Figure 10 is the lateral view of a multi-form pool cleaner of the present invention;

The liquid stream interrupting device of Figure 11 for using in Figure 10 pool cleaner;

Figure 12 is Figure 10 and Figure 11 element after assembling.

Preferential embodiment explanation

Accompanying drawing Fig. 1 represents the pool cleaner housing 10 in the manufacture process.This housing has second model element 14 that is considered as plug herein again first model element, 12 inner formation of being made by suitable material in this model element.This model element 12 constitutes by two that engage one another at least.To a considerable extent, Fig. 1 is a sketch, because it is intended to represent the principle of manufacture process.Modeling spare and the mode that engages one another thereof are the aspects of being familiar with for the people in the present technique field, thereby do not further specify herein.

Plug 14 is accurate in die cavity 16 positioned internal of stipulating these housing 10 profiles.This reaches by the technology of being familiar with in the present technique field.Then class such as polyacrylic suitable plastic are injected around the die cavity of this plug 14 and formed this housing 10.In case housing solidifies, and just this housing is taken out from this model element 12, and extracts this plug 14.All these utilize the technology of being familiar with in the present technique field to finish.

An object of the present invention is to provide the pool cleaner housing that in an independent mould notes process, is shaped, thereby make this housing have a kind of structure of whole pattern as much as possible.Easy speech, the element that constitutes this housing is not separately to make, and with securing member, clamping structure or the like they is fixed together then.Especially from economic point of view and durability viewpoint, can make that to have an integrally-built pool cleaner housing be important.Cost of production is low, and the ability of vibration that may run into when housing is resisted to use simultaneously and similar percussion increases.As is generally known, should take design directed when pool cleaner uses.To use buoyant member that invests this housing buoyancy and bias piece or the counterweight that increases a part of density of this housing for this reason.Up to now, according to the knowledge of the applicant, the pool cleaner that the applicant is familiar with adopts the buoyant member that possesses " localization effect (localizedeffect) ".For example in US 4 023 227, this buoyant member sees to be annular from the side.In US 4 351 077, this buoyant member system is spherical.The applicant announces that now the elongated shape buoyant member of use has two important advantages.The first, for cleaner work good one special when cleaner begins not have in the entry-crucial cleaner is directed to keep surprising accuracy.The afterclap that its reason of another one is not understood fully as yet fully is to cancel the counterweight that is contained in usually on the suction hose that is connected with this cleaner.The use of this kind counterweight is rule of thumb determined traditionally, depends on the degree of depth of this swimming pool that uses cleaner especially.

Second advantage is that the applicant has noticed pool cleaner housing high degree of flexibility in use.This pool cleaner housing can rotate, and is trapped in the corner, teasy place-for example under water and the chance on the step so that reduce this pool cleaner.

In order to realize above-mentioned advantage, this pool cleaner housing 10 comprises an elongated buoyant member 18, and this buoyant member is made in advance with suitable expanded material-class such as polystyrene or foam polyurethane or any suitable material in this example of the present invention.This pool cleaner housing also comprises plummet or the bias piece of imbedding in this housing 20.

Fig. 2 represents the phantom drawing of this plug 14.This plug has the pars intermedia 22 of elongated a, circular cross section.One end of this pars intermedia has a bearing pin 24, and at the relative end of pars intermedia the one chamber forming section 26 that enlarges is arranged.Two roots 28 outwards protrude from pars intermedia 22, and stretch between bearing pin 24 and this one 26.This rib is positioned on two relative sides of pars intermedia.In Fig. 1 and Fig. 2, only see a root.

On the pars intermedia of plug, a side has first pair of pit 30, in a relative side second group of pit 32 (see figure 1) is arranged.Before this plug is inserted model element 12, little plastic pin 34 is filled in this respective dimple.The bared end of pin engages with the mating holes of this buoyant member 18 and this plummet 20 respectively.With this kind method this buoyant member and this plummet are accurately located with respect to this plug.Plug is inserted in this model element 12 then.

In a single day this plug stretches between the relative termination 36 and 38 of this housing, and takes out, just stay a passage that stretches between these terminations 40.This passage has an inlet 42 and one outlet 44.One minimum cross-section district 46 is arranged in the exit of this passage.Length from this outlet along this passage advances to inlet, this plug-thereby also be that the cross-sectional area of this passage increases monotonously.Therefore, this passage at the cross-sectional area of any the three unities all more than or equal to the cross-sectional area in the adjacent place, front of this passage.This plug does not also have the discontinuous portion that step maybe may form recessed district, thereby the shape unanimity of this passage.This bearing pin 42-thereby also be that the cross-sectional area of this section 46 is constant substantially.This pars intermedia 22 has the taper with 2 °, so the cross-sectional area of pars intermedia is along with move and increase gradually to the right on the left side from Fig. 1.

This inlet 42 does not comprise the step or the concave shape that may stop plug to be extracted.See clearly especially from Fig. 2, this plug has an outwardly directed V-arrangement 48 in section 26.This shape finally forms the inwall of a chamber of pool cleaner.This plug has a solid part 50 on the right side of section 26, this solid part can operate and correct location plug mainly for practical purpose in part 12.

As previously mentioned, the plastics that gather third ethene 50 with class such as appropriate level inject the volume that forms between this die cavity 16 and this plug 14 apparent surfaces.This material solidifies round this plug, this buoyant member and this plummet.In case material has cured, this housing and involved plug 14 just take out from this part 12.Then this plug is extracted from this housing by this inlet 42.Though plug is formed the material of housing and tightly surrounds, thereby for initial resistance of the existence of the relative motion between this plug and this housing, in case but this plug has produced motion to the right (referring to Fig. 1) with respect to housing, the pars intermedia 22 of the cross section character of this plug dullness-particularly has the situation of tapering to mean between this housing and this plug that only any slight relative motion of needs just can make this plug freely move to leave this housing.

When this plug withdrawed from, this pin 34 was sheared.As previously mentioned, this pin is fixed on this housing, this buoyant member 18 and this plummet 20.This pin need not very high intensity, and described relative motion is enough to destroy pin, thereby makes this plug be withdrawed from this housing.And this part pin of staying this enclosure interior just stays put simply.

Therefore the present invention proposes a kind of method that constitutes the pool cleaner housing, and this housing has a buoyant member of imbedding and bias piece.

Near this plug and model element 12 shape this enters the mouth 42 places has been stipulated an overhanging flange 52 round oral area 54, and this oral area 54 is positioned at the upstream side of the pool cleaner housing when using.The relative hole 56 that dots among two Fig. 1 is arranged on this case material between this inlet 42 and this oral area 54.This inlet have one around shoulder 58.

The length 60 of this housing and the length 62 of this buoyant member 18 are all measured along the general direction of this passage.

This length 62 preferably surpasses 25% of length 60, if be at least length 60 50% suitable especially.The buoyant member that is surprised to find that this elongated shape pattern fully gives the pool cleaner housing very big stability, and do not have in the entry at the pool cleaner housing-when beginning not have in the entry, it also can make it take correct orientation or posture especially.The another one surprising discovery is that the flexibility of weighing around the ability of its longitudinal axis rotation when moving according to cleaner has improved.This point helps cleaner difficult locations in the swimming pool to get away, and has also increased the degree of this pool cleaner random motion.

This buoyant member 18 is positioned at this pool cleaner housing upside when using, and this plummet 20 then is positioned at downside radially relative with this buoyant member on this pool cleaner housing.Therefore on this shell a big chunk length, the bias effect of this plummet 20 then is applied on the local location of this cleaner downside lower end this buoyant member with buoyancy.

Though this housing 10 of Cheng Xinging is whole in a manner described, and holistic structure is arranged, on its meaning that can not come into operation at once, say or incomplete.Fig. 3 is a cleaner end-view of only representing this inlet 42, and this inlet has rectangular cross section, and this passage 40 has circular cross sections.On the radially relative side of this passage, form groove 64 according to two ribs on this plug 28.

Fig. 4 is the viewgraph of cross-section that this die cavity 16 and this plug 14 obtain along Fig. 1 center line 4-4.

Fig. 6 is the end-view of this cleaner, and expression is around the flange 52 of this oral area 54 and this inlet 42.Fig. 6 also represents a closure member or cover plate 70, and this cover plate divides die sinking to annotate, and comprises a hole 72 that is positioned at the center.4 flexible little lugs 74 that inwardly stretch out around this inlet 42 are arranged on this housing 10.This cover plate 70 can be filled in by this oral area, and by extrusion lug 74 this cover plate is dropped on this shoulder 58 by this trunnion cup.This lug returns to shown position this cover plate is securely fixed on this pool cleaner housing then.This cover plate very easily sheds, as long as simply a finger is stretched into this hole 72, this cover plate of wrenching just can.These characteristics are very useful because it make the dust that is accumulated in this channel interior or foreign material can near and remove.This cover plate and then install on this pool cleaner housing.

Fig. 5 shows the dividing plate 80 that gives shaping, and it comprises the elongate portion 82 of a rectangular dimension and at a v-depression 84 of this one end.The liquid stream interrupting device of V-shaped 88 shapes has the front end 90 that can locate in this groove 84.This vee-block moves back and forth between the position that is limited by these v-depression both arms with respect to dividing plate 80 shown in arrow 90.

The design of this dividing plate 80 makes in its groove 64 that can insert these passage 40 inwalls.This point just can realize after this plug is extracted from this housing.This dividing plate is slipped into passage directly inserts in the corresponding groove its vertically relative limit.So this passage is just by corresponding first and second subchannels that adjoin 94 and 96 of being divided into.This v-depression 84 moves to a position, the top alignment of this position and the concave shape that formed by V-arrangement 48.

98 inner motions between the skew wall relatively just suffer restraints the vee-block 88 that is represented by dotted lines in Fig. 1 in the chamber.

When this cover plate 70 and this housing 10 joints, this vee-block just is closed in the valve chamber.

The mode of occupation of this pool cleaner is known in the present technique field, so locate to need not to further specify.Any flexible shirt rim of producing and this overhanging flange 52 are engaged, and use the swivel coupling of any suitable type that suction hose is connected with this outlet 44.When this pool cleaner did not have in the entry, the pump by a unshowned external world aspirated suction hose and this passage 40.This pump makes water flow to this outlet 44 by this inlet 42.Current swing back and forth this vee-block 88 in valve chamber 98.These current by in two subchannels 94 and 96 that formed by this dividing plate 80 alternately fluctuation ground advance.This dividing plate is divided into two D shape subchannels with main channel 40, and this dividing plate constitutes the public wall between the D shape subchannel simultaneously.

Fig. 7 and 8 represents the side and the front view of a important improvement that this pool cleaner is done respectively.

Bell shape cover plate of flat deck 70 usefulness 70A among Fig. 6 replaces.A centre bore 72A is arranged on the central surface of this cover plate, the interval 91 of a width 93 is arranged between the apparent surface of this cover plate and this vee-block 88.

This width 93 is substantially equal to 97 Breadth Maximum 95 at interval.This interval 97 is to form between the inwall apparent surface of vee-block and chamber 98 when this pool cleaner uses.This improvement does not influence the work of this vee-block, but improved the performance of this pool cleaner, because this cleaner can be extracted bigger material fragment out by the vee-block chamber, be leaf, branch and small stone or the like, these material fragments can be interfered the motion of this vee-block far from or are blocked in this valve chamber simultaneously.Under any circumstance, as once pointing out, as long as shed this cover plate simply and, just can clear up this valve chamber easily near this vee-block and valve chamber.

It is that this dividing plate 80 has been cancelled the shape 84 on this dividing plate 80 that the another kinds of Fig. 7 and 8 expressions change, because be located on the shape 101 of the boss 103 of internal valve chamber the relative edge 99 on this vee-block top.

It should be noted that in Fig. 8 the profile with dashed lines cropping of vee-block 88 comes out.

The characteristics that obtain this pool cleaner flexibility by the stretching, extension buoyant member of using element 18 shown in Figure 1 also can obtain by other mode.For example the less floating member 18A of a plurality of independent shapings is imbedded in the pool cleaner housing 10A of modification of the present invention referring to Fig. 9.The size of this floating member and quantity have been considered the relative density of pool cleaner case material and the density of part of should floating, so invest buoyancy sufficient on this housing total length.The size of these parts 18A can be consistent or different.The major part that focusing in this respect should be this shell length provides buoyancy, so that obtain previously described advantage.All the other characteristics of this pool cleaner housing 10A and the corresponding characteristics of housing 10 are similar substantially, no longer describe in detail herein.

Figure 10 to 12 expression the present invention is used for using different types liquid to flow the principle of the pool cleaner structure of interrupting device.Figure 10 represents a pool cleaner housing 100, and it is identical with the explanation of contact Fig. 1 basically that its mould is annotated mode, and be the housing of an integral body.This housing comprises an internal channel 102 with minimum cross-section district 104.This district is near an outlet 106 of this housing one end.Between this district 104 and this outlet 106, this passage flare is opened, thereby increases monotonously to the right.

At the passage opposite end one inlet 108 is arranged, move to the long-pending increase monotonously of plane of structure of the passage of this inlet 108 from this district 104.First section 110 of this passage has first tapering that increases this cross-sectional area gradually, also does taperedly for its second section 112, and the cross-sectional area of this section is increased from right-to-left.At first and second sections joining places one shoulder 114 is arranged.

This housing has one outwards to be stretched the oral area 116 that flange 118 surrounds.Flexible skirt 120 and this flange engages of a known structure.

Use the technology of contact Fig. 1 explanation that a bias voltage counterweight 122 is imbedded in this housing.Aspect aforementioned, this pool cleaner housing 100 is similar with this pool cleaner housing 10 shown in Figure 1 in abstracto.

This housing 100 also comprises this housing is imbedded in the back that can separately be shaped in this housing manufacture process buoyant member 124.But the applicant has announced that this element 124 can integrally be shaped with this housing by the method that makes the material foaming of making this housing.It should be noted, this housing plastics forming, and that plastic foamed method has is multiple.This housing can need the method foaming of the hole or the bubble of formation by the generation of adding blowing agent.These characteristics approximately show in the housing scope of 4mm greater than a predetermined value-for example especially at its thickness.Therefore, remember that this point just might guarantee that the plastics that inject the housing modeling solidify by clever design under the situation of a part without any the foaming effect generation of this housing, this partial shell is the thin wall that regulation is surrounded this stream 102.By increasing size with respect to the housing of this stream, just form its interior bigger volume that produces foaming effect, the material monolithic ground of this element 124 and this housing can be shaped with the method.In plastics industry, there is the whole bag of tricks to impel this foaming effect to produce as everyone knows.For example can use cellularpiston with honeycomb structure.This kind honeycomb structure is by before plastics solidification the effect that produces in the gas injected plastic being caused, perhaps utilizing chemical action to produce in injection process.Therefore the density that the characteristic of annotating process by this mould of control just can production some of them part is less than the housing of remainder density, and in fact the little density portion of each this kind is showy parts.On the other hand, as can be known when plastics when particularly the thermal model surface contacts with model surface one, just can form the part of a less gas from the gas injection technology of plastics.By controlling the method for this model characteristics, just can guarantee that the major part of this housing has a large amount of honeycombs that invest the little density feature of this part.A relative side that has the pool cleaner housing of plummet 122 is then made its density more greatly, thereby need not foam.

This housing has the removable buffer bar made from the wear-resisting anti-friction material of class such as polyurethane 126.This illustration among Figure 10 is represented the cross section of this buffer bar.This buffer bar has the elongate rib 128 of a band pearl shape termination 130, and this pearl shape termination embeds in the groove 132 of the corresponding size on the longitudinal edge under this housing by interference fit.

Figure 11 represents a liquid stream interrupting device 136 of being familiar with structure, and it comprises a pipe 138 and a diaphragm valve 140.As shown in figure 12, this device 136 can be filled in this path 10 2 by this inlet 108.Diaphragm 140 is located on the shoulder 142, and the tube distal end 144 same compression rings 148 that while and clamp structure 146 form one engage.This compression ring is surrounded by a union nut 150.This union nut is connected with a threaded portion 152 that centers on this housing of this outlet 106 by screw thread.A swivel coupling 154 stretches out from this nut, and is connected with a unshowned suction hose.

When this connector 154 was subjected to swabbing action, the current by this diaphragm valve 140 made this valve by the mode open and close of being familiar with in the present technique field, and the panting action of current is moved this pool cleaner with random fashion on its surface that need clear up.

The advantage that this pool cleaner has shown in Figure 12 with the contact other embodiment once introduced identical, promptly the length 160 of this elongated buoyant member substantially exceeds 25% of length 162 between the entrance and exit of this pool cleaner housing, so this pool cleaner has sizable flexibility when using.Second factor is that this housing is an overall structure.

Because the buoyant member of this foaming has been exempted the step that independent mould is annotated, so particularly useful.Another significant advantage is owing to adopt high-density plastic and careful control wherein to produce the volume of foaming, perhaps do not produce the volume of foaming, so the just available solid plastic of volume that is occupied by this counterweight 12 forms, and provides the bias voltage of requirement by it, thereby cancels this counterweight.But, still need to strengthen the solid plastic part, so that it is suitable with this plummet weight of being replaced by this parts of plastics to make its weight.

The minimum area of section of this cleaner housing internal channel preferably is positioned at an end of this passage, because so only require an independent plug.If this smallest cross-section area is positioned on the centre position of passage, then this cross-sectional area just will increase on both direction monotonously, each direction is towards a corresponding end of passage, and two plugs of needs, and every plug inserts this model element 12 from different sides in an opposite direction.

Claims (22)

1. pool cleaner, it comprises: a housing; At least one first passage by this housing, an inlet and an outlet of flowing out this first passage of leading to first passage is arranged respectively on each relative termination of this first passage, this first passage is selected from following two kinds of structures: (1) passage A, on a position between the entrance and exit, has minimum cross sectional area, along leaving the direction separately that extend to the respective end separately of passage A this position, cross sectional area is dull to be increased; (2) channel B, at the cross sectional area that an end of channel B has minimum, along the direction that this end that leaves channel B extends to the end opposite of channel B, cross sectional area is dull to be increased, and current interrupting device interruption current are by the current of this first passage.

2. the pool cleaner of claim 1, it is characterized in that comprising a second channel, it passes this housing, has entrance and exit in its corresponding end opposite, this first and second passage is non-coaxial line, second channel is selected from following two kinds of structures: (1) passage A has minimum cross sectional area on a position between the entrance and exit, and along leaving the direction separately that extend to the respective end separately of passage A this position, cross sectional area is dull to be increased; (2) channel B, at the cross sectional area that an end of channel B has minimum, along the direction that this end that leaves channel B extends to the end opposite of channel B, cross sectional area is dull to be increased, and current interrupting device interruption current are by this second channel.

3. the pool cleaner of claim 2 is characterized in that first and second passages are separated by longitudinal baffle.

4. the pool cleaner of claim 3 is characterized in that this dividing plate and this housing separate formation, and the back engages with this housing, thereby constitutes first and second passages part separately.

5. the pool cleaner of claim 3 is characterized in that the whole formation of this dividing plate and this housing.

6. the pool cleaner of claim 2 it is characterized in that this housing comprises the chamber of this inlet of vicinity, and the current interrupting device just is configured in this chamber.

7. the pool cleaner of claim 6 is characterized in that comprising a lid, engages with this housing, and the current interrupting device is remained in this chamber.

8. the pool cleaner of claim 2 is characterized in that the equal in length of this first and second passage.

9. the pool cleaner of claim 1 is characterized in that this current interrupting device is configured in the first passage.

10. the pool cleaner of claim 1 is characterized in that this housing is the integral single piece structure.

11. the pool cleaner of claim 1 is characterized in that comprising elongated showy part, along the general direction extension of first passage at least, its length surpasses 25% of this shell length.

12. the pool cleaner of claim 1 is characterized in that comprising showy part, is formed with this housing integral body when making this housing by the foamed material of making this housing.

13. the pool cleaner of claim 1 is characterized in that comprising a plurality of showy parts, their each interval arrangements respectively are arranged in a row, along the general direction extension of first passage at least.

14. the pool cleaner of claim 1, it is characterized in that comprising showy part, configuration in use is the upside of this housing on a side of first passage at least, and comprises bias piece, is configured in this downside of this housing on the just in time opposition side of first passage at least.

15. the pool cleaner of one of claim 1 to 13 is characterized in that comprising bias piece, configuration in use is the downside of this housing.

16. the pool cleaner of claim 15 is characterized in that this bias piece is made of the solid section of this object.

17. a pool cleaner comprises:

One integral single piece housing, a hollow channel passes this housing, passes to the outlet of this housing one end and the inlet of this housing other end;

Longitudinal baffle in this passage is divided into first and second passages with this passage, and they extend to the certain-length of described passage separately, and first and second passages have the cross sectional area of variation respectively;

At a current interrupting device of entrance, it can move, alternately to interrupt the current to first and second passages.

18. the pool cleaner of claim 17 is characterized in that first and second passages have minimum cross sectional area separately at the one end, this area is to the dull growth of its other end.

19. the pool cleaner of claim 17 is characterized in that first and second passages have minimum cross sectional area on a position between the entrance and exit, this area increases to its two ends dullness from this position.

20. the pool cleaner of claim 17 is characterized in that the equal in length of this first and second passage.

21. the pool cleaner of one of claim 17 to 20 is characterized in that the whole formation of this dividing plate and this housing.

22. trip pond cleaner, comprise a whole monomer housing, in housing, form a chamber, the exit passageway that at least one cross sectional area that extends from this chamber changes, a chamber inlet and a current interrupting device, it is at least one of this chamber or passage at least in part.

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