EP1020571B1 - Sanitary article, in particular a shower head, with a switching device to influence a fluid flow - Google Patents

Abstract

The hand shower unit has a switch system (2) to affect the fluid flow. It has an inlet (6) and outlet (7) for the water and an air suction unit which acts as a water spray pump, which is switched (2) on and off. It has at least one pump spray opening (38) which opens into the pump zone (40), through at least one air feed channel connected to the ambient environment. The passage cross section between the water inlet (6) and outlet (7) is expanded when the air suction system is switched off.

Description

The invention relates to a sanitary object, in particular a hand shower, with a switching device for influencing a liquid flow.

It is known in liquid-carrying sanitary articles to use the principle of a water jet pump to that of a liquid inlet to a liquid outlet flowing through Add liquid sucked air. A For this purpose provided air intake device has at least one can be connected to the liquid inlet pump jet opening, the opens into a pump chamber, which has at least one air supply channel can be connected to the environment. The through the pump jet opening leaking fluid entrains air that mixed with the liquid and together with this For example, as a soft, sparkling water jet outlet exit. It is in the pump room or the air supply channel creates a negative pressure, sucked through the air will, as long as liquid with sufficient speed through the pump jet port and the air supply passage is open.

Permanent devices of this kind are, for example in so-called water jet aerators or jet regulators, which are attached to the outlet end of taps can. In the case of overhead showers, air suction devices are also known, such as those disclosed in US Pat 5 154 355 described overhead showers.

The patent CH-A 473 573 shows a hand shower, in the a water jet pump with a device for injection additional substances in the flowing liquid such combined is that both devices simultaneously on or can be switched off. In the handle of the hand shower is located a sliding water supply, which is a Venturi tube-like Has constriction into which an injection line opens, the with a pantry for a detergent in Can be connected. The movable water supply forms with its outlet end the pump jet opening. It is in a cylindrical channel of the handle slidably guided, in the area of the pump jet opening Having radial air supply openings through Axial displacement of the displaceable water supply line optionally can be covered or released. In a Position with released air inlet openings is the Injection channel in connection with the detergent supply, which sucked in the area of the constriction detergent becomes. In the area of the downstream water jet pump Air supplied to foam.

The hand shower known from CH-A 686 409 has a handle a water supply line with a pump jet opening forming Flow restrictor nozzle expanding in one Pump room leads to a conically enlarged pressure build-up and mixing room connects. In the pump room also opens an external air supply line, whose located at the bottom of the handle inlet opening per Can be closed by hand or by means of a slider. The Hand shower should despite reduced water consumption one form strong and tingling water-jet, whose water flow rate regardless of the example by a slider adjustable amount of air supplied relative should remain the same.

The invention has for its object to provide a sanitary object, in particular a hand shower with a switching device to create, which results in an improved use.

To solve this problem, the invention proposes a switching device with the features of claim 1 before.

An inventive sanitary object is characterized in that that between a liquid inlet and liquid outlet the switching device formed passage cross-section for the liquid at shutdown of the air intake is expandable. So it can be switched on Water jet pump or air intake a smaller Gesamtdurchlaßquerschnitt be set as when switched off Air suction. This can be in the intake position a water saving effect can be achieved. The compared to the shutdown position smaller passage cross-section can also a flow acceleration of the liquid flowing through be used, which has a strong pumping or suction allows. As a result, in the intake position on the outlet side a strongly air-mixed, soft-feeling Liquid flow can be generated. In the position with complete switched-off air intake, however, is a clear larger passage cross-section available, so that the outlet side a substantially air-free, strong current deliverable is, for example, is useful for massage purposes. The ratio of large to small flow area can more than 1.1 or 1.2, in particular between about 1.3 and about 3, for example between 2 and 3. The flow paths and passage cross sections are preferably sized that with activated water jet pump less than about 60% to 80%, for example, between 1/3 and 2/3, in particular About half of the water jet pump switched off flowing water flows. Such Switching option between an optionally hard massage jet and a water-saving, relaxing-looking, Bubbling soft jet can be especially in hand showers or permanently installed showers significantly increase showering comfort, as a user depending on the mood or need between two distinct beam hardnesses can choose without changing the beam type at the same time will need. The switching device is in particular upstream of jet formers and in particular of any Switching devices arranged for the type of jet. The Switching device can only switching a Sanitary article or in addition to other switching devices, for example, in the shower head, be provided whereby additional combination options are obtained.

In a preferred embodiment, the passage cross-section the preferably circular pump jet opening smaller than the passage area of the preferably also circular liquid inlet, preferably less than 30%, in particular between approx. 5% and approx. 20% of the passage cross-section of the liquid inlet. This is when liquid-tight water flow between the liquid inlet and the pump jet opening a causes strong acceleration of the liquid flowing through, even at low inlet pressure at high speed emerges from the pump jet opening, so that a strong pumping effect even with only moderately open supply line is reached. To further increase the suction effect In one embodiment, the pumping action is a flow calming device to equalize the by provided the pump jet opening passing flow. These may upstream of the pump jet opening more, preferably have crosswise arranged axial guide rails, which has a suitable axial length of, for example several millimeters to centimeters a laminar flow promote and counteract vortex formation.

It is possible to design the switching device so that the shutdown of the water jet pump with a time delay for expansion the passage cross section takes place. Preferably done shut-off of air access and extension the passage cross-section simultaneously. In particular, at Shutdown of the suction at least one additional for pump jet opening provided further passageway be openable. This can have a larger flow area than the pump jet opening, which then possibly closed can be. Preferably, however, are turned off at Air intake both the pump jet port, as also the further passage channel can be flowed through, so that the Passage cross section of the pump jet opening remains usable. As a result, in the cross section are particularly compact solutions possible.

The at least one further passage channel can be eccentric to the pump jet opening or laterally offset from this be. A particularly effective use of limited Cross sections, for example in the handle of a hand shower, is possible in a preferred embodiment thereby that the further passageway is substantially concentric is arranged with the pump jet opening. He can in particular formed as the pump jet opening surrounding annular channel be.

The boundary walls of the individual passage cross sections may be in a rigid arrangement with each other, where appropriate separate lines can lead to the openings. The opening or closing passage cross sections can through each Type of suitable closing members, such as slides, flaps or the like, be performed. In a preferred embodiment the switching device has a liquid-conducting first sleeve, with a separate second sleeve such telescopically arranged, in particular zusammensteckbar is that between the sleeves at least in one Axial section a usable as another passage section, formed axially permeable annular channel or gap is. The further passage passage can in particular axial relative displacement of the first and the second Sleeve can be opened or shut off. As a result, they have each other movable, in particular axially relative to each other sliding sleeves a double function on the one hand as Liquid management and on the other hand as blocking members, so that can be dispensed with separate locking elements.

Although the pump port and the further passage channel are separate Water supply may have, is at a preferred embodiment provided that a telescopic disposed within a second sleeve first sleeve a radial flow cross-section with at least one radial permeable through opening has, through which the interior the first sleeve with a between first sleeve and second Sleeve formed intermediate space or annulus is connectable. This makes it possible, the only liquid inlet of the To provide switching device on the first sleeve, for example an external thread for connecting a hose may have. Through the first sleeve then does not happen only the flow to the pump jet opening, but also the liquid line in the enclosing the first sleeve Interspace, the other when the air supply Passage cross section forms.

The air supply channel can by any suitable, possibly branched or multi-channel cavity assembly may be formed allows an interruptible intake of air into the pump room. He can by separate line sections and / or by suitably spaced components of the switching device and / or provided by within massive components Channel walls to be limited and is preferably so aerodynamically dimensioned that unintentional noise during the air intake largely prevented becomes. The closing may be effected by any suitable closing organ, For example, a slide can be achieved. At a preferred embodiment, a simultaneous opening of the further passage cross-section and closing the air supply channel allows this by relative displacement two telescopically arranged sleeves openable or can be locked. Preferably, this has the air supply channel a trained as a sleeve wall opening of a sleeve first Channel section, relative to a sleeve wall opening the other sleeve formed second channel section between Positions with and without cross - sectional overlap Channel sections is movable. Are the channel sections complete? offset from each other, so is the air supply channel interrupted, while at least partially cross-sectional overlap the channel sections communicate and the air is sucked.

In at least one of the sleeve wall openings, a preferably be used rubber-elastic valve body, in Shut-off a seal of mutually shifted Sleeves in the wall opening area causes and in the open position forms a seated in the intake valve. This can preferably open automatically in the intake, in the opposite direction, on the other hand, automatically close to one unwanted water leakage through the air supply channel reliable to prevent. In a preferred embodiment this is a suitable beak valve or lip valve intended.

The presence of a negative pressure in the pump room or in the Air supply channel with activated water jet pump can be used for other purposes. So is at a preferred embodiment of the air supply channel or the pump room at least one activatable by negative pressure Assigned acoustic signal generator, the example so may be formed that by flowing at negative pressure Air one or more blades offset in audible vibrations become. As a result, for example, a preferably are created in a polyphonic "shower harmonica", which in small and big kids the fun of showering on "smart" Way can increase. Such acoustic signal generator can in all working with the water jet pump principle Provided with air intake devices, generic sanitary articles, especially in hand showers, be provided.

Although switching devices according to the invention firmly in corresponding Sanitary items can be integrated is the switching device in a preferred embodiment, preferably without tools, interchangeable, so that the Sanitary article, if desired, even without switching device or water jet ventilation is operable. Especially the switching device in the handle of a Hand shower integrated or be integrated. The handle this can have two axial handle portions, which after Type of quick coupling without tools locked together or can be configured detachable from each other. The one inside the other pluggable and preferably by round cord seals mutually sealable sleeves of the switching device can be suitably first in the associated handle sections introduced and then during assembly of the Handle are inserted into each other, so that the assembly the switching device simultaneously with the assembly the handle sections can be made. Accordingly simple If the switching device can be used for replacement or repair or cleaning purposes taken from the handle become.

According to the invention, the sanitary article, in particular if he is trained as a shower, with a cleanable Be provided with filters. The filter is preferably as radial from the inside or from the outside flow-through sleeve-shaped Filter formed, which is flowed radially and at his downstream end is releasably closed. By Opening the shutter is the filter for cleaning axially designed to flow through. The filter is preferred for cleaning formed detachable from the sanitary object. Especially Advantageously, the axial closure is a when removing the Filters on sanitary object remaining part, so that the axial closure when removing the filter automatically from Filter removed and this is opened axially. To this Way, the cleaning of the filter in from the sanitary object dissolved state so that there is no danger that left in the filter residues in the sanitary object reach. In a further advantageous embodiment is the water connection, e.g. a hose connection, lasting connected to the filter so that the normal water connection for flowing through the filter for the purpose of cleaning can be used. This design of the filter is not advantageous only with the sanitary article described here, but can also be used with other sanitary items, in particular Showers, such as hand showers, be provided.

Fig. 1

einen Längsschnitt durch eine in den Handgriff einer Handbrause eingebaute, bevorzugte Ausführungsform einer erfindungsgemäßen Umschalteinrichtung in einer Stellung mit eingeschalteter Luftansaugeinrichtung und gedrosseltem Wasserdurchlaß,

Fig. 2

die Umschalteinrichtung gemäß Fig. 1 mit abgeschalteter Luftansaugeinrichtung und ungedrosseltem Wasserdurchlaß,

Fig. 3

eine Perspektivansicht einer Schlauchanschlußhülse der Umschalteinrichtung gemäß den Fign. 1 und 2,

Fig. 4

eine Perspektivansicht einer Schieberhülse der Umschalteinrichtung gemäß den Fign. 1 und 2,

Fig. 5

eine Perspektivansicht einer Führungshülse der Umschalteinrichtung gemäß den Fign. 1 und 2, und

Fig. 6

eine Seitenansicht des hinteren Endabschnittes eines Handgriffes einer Handbrause mit eingesetzten Hülsen der Umschalteinrichtung vor Zusammenbau des Handgriffes und der Umschalteinrichtung.

The described features and further features of the invention will become apparent from the following description of a preferred embodiment in conjunction with the subclaims and the drawings. In this case, the individual features can be implemented individually or in combination with one another in each case. In the drawings show:

Fig. 1

a longitudinal section through a built-in the handle of a hand shower, preferred embodiment of a switching device according to the invention in a position with activated air intake and throttled water passage,

Fig. 2

1 with switched off air intake and unthrottled water passage,

Fig. 3

a perspective view of a hose connecting sleeve of the switching device according to FIGS. 1 and 2,

Fig. 4

a perspective view of a sliding sleeve of the switching device according to FIGS. 1 and 2,

Fig. 5

a perspective view of a guide sleeve of the switching device according to FIGS. 1 and 2, and

Fig. 6

a side view of the rear end portion of a handle of a hand shower with inserted sleeves of the switching device before assembly of the handle and the switching device.

The axial longitudinal section in Fig. 1 shows the rear, hose-facing part of a shower handle 1, the has a hollow interior in which a preferred embodiment used a switching device 2 according to the invention is. The handle has a hose-facing, rear handle portion 3 and a not shown Shower head facing, integrally formed with this front handle section 4. Made of impact resistant, well chromed Plastic (ABS) injection-molded housing parts 3, 4 have facing each other, about 45 ° beveled, complementary molded end faces (Fig. 6), which when mated Handle an oblique around this circumferential butt joint limit. With inserted switching device 2 and assembled Handle 1 this is by means of a hose connection external thread 5 to that with a suitable union nut provided front end of a shower hose screwed. When the water supply is switched on, the water comes through the circular liquid inlet 6 in the threaded area in the sealed to the outside interior of the switching device and therethrough to its circular liquid outlet 7 and from there via one inside the front Handle portion 4 arranged, sealed in the Flüssigkeitsäuslaßbereich 7 inserted water channel 8th in the area of the shower head, not shown.

The switching device 2 consists essentially of three Telescopically plugged into each other, sleeve-like plastic components 10, 11, 12, which are shown in FIGS. 3 to 5 in perspective are shown. The particular shown in Fig. 3, as a hose connecting sleeve formed first sleeve 10 has inlet side, the hose connection thread 5 and the liquid inlet 6, is from the hose side to the stop a ring collar 13 to a stop shoulder 14 of the Handle section 3 inserted into these and sits in the inserted State rotationally fixed in this, since an axial web 15th in a corresponding axial groove of the handle portion. 3 intervenes. It has a substantially circular inner cross-section or passage cross-section, which is in the flow direction 16 in two at a distance successive Tapered steps. One leads to a circular cylindrical, inlet side section subsequent first rejuvenation stage over conical or partially flat funnel surfaces to a middle section 18, which is about 25% of the Passage cross-section of the liquid inlet 6 has, and a second step 19 with conical funnel surfaces leads into a cylindrical outlet section 20 of smaller diameter, the passage cross-sectional area less than half of the central portion 18 and about 9% of the cross section in Inlet area 6 corresponds. As a result, a in the liquid inlet 6 inflowing liquid in two stages strongly accelerated, taking after the acceleration stages respectively diameter constant sections for flow calming consequences. Also, the outer diameter of the first sleeve 10 vergedert gradually, so that cylindrical sections differ Outer diameter to form radial or oblique-radial steps follow one another. Subsequently at the dimensioned for fitting in the rear housing part 3 Outer portion is to form a radial stop shoulder 21, a cylindrical sealing portion 22 is formed, in which a circumferential annular groove for receiving a ring cord seal 23 is provided. Downstream closes in the Outer diameter smaller, serving as a filter radial flow section 24, in which in the sleeve wall several narrow, axially spaced, designed as radial slots passage openings 25 are provided. As a result, the sleeve wall in the region of the radial flow section 24 radially flow through. Also in the subsequent, smaller in diameter cylindrical outlet section 20 are slot-shaped radial openings as well as a pair opposite, in cross-section larger, rectangular radial openings 26 are provided. In the end region of the outlet section 20 is an outer diameter extension formed, in which a further annular groove is provided with a ring cord seal 27. The outlet side Completion of the first sleeve is characterized by a thin-walled, formed cylindrical neck 28. The made of rigid Plastic material, in particular polyoxymethylene, manufactured sleeve body 10 is rigid in the inserted state connected to the handle housing.

In composite switching device is the first sleeve 10 telescopically inserted into a second sleeve 11 (FIG. 4), that the two sleeves in the region of the sealing portion 22 sealed against each other axially displaceable are, while in the region of the radially through-flow openings 25, 26 of the inner sleeve 10 between this and the outer, second sleeve a gap or annular space 30 remains. The designed as axial slide second sleeve 11 has downstream of the outer boundary of the annular space 30 or as Guide and sealing surface serving cylindrical section 31 a to form an inclined surface 32 inside projecting annular collar 33 which has a cylindrical inner surface 34 has, with the ring cord seal 27 of the first sleeve so cooperates as a sealing surface that in the one shown in Fig. 1 Slider position of the annular space 30 in the axial direction or flow direction of the water is sealed while he is axially open in the position shown in Fig. 2.

Inside the sleeve 11 is downstream of the annular collar 33rd a concentric smaller sleeve 35 provided over a one-sided support web 36 with the outer sleeve wall connected is. The in extension with the cylindrical outlet section 20 of the first sleeve arranged guide sleeve 35 has the same inner diameter as the cylindrical one Outlet portion 20 and has this facing one for receiving the nozzle 28 formed diameter extension, in the the nozzle 28 in the closed position shown in Fig. 1 so is introduced, that the sleeve 35 a heelless extension the cylindrical outlet portion 20 forms. At the movable Sleeve 35 and the slide 11 can be in the cylindrical Outlet portion 20 of the first sleeve from the game side insertable guide body 60 to be attached to his upstream free end a piston-like in the Outlet passage 20 insertable punch 61 and a plurality, for example four, axially extending webs forming the cylindrical guide channel in four sub-channels accordingly split smaller diameter. Through the play-free introduction is an axial guide for the free inside the handle portion protruding end portion of the first Sleeve formed.

The circular outlet opening 38 of the sleeve 35 opens into one through the cylindrical wall 39 of the second sleeve 11th limited air intake 40, the liquid outlet 7th has the same cross-section as the liquid inlet 6 of Sleeve 10. In the vicinity of the liquid outlet 7 is at the Outside of the cylinder wall 39 has a circumferential groove for receiving a ring cord seal 41 provided with a cylindrical inner surface of a third sleeve 12 as a sealing surface interacts. Below the central sleeve 35 is a radially continuous, cylindrical sleeve wall opening 42nd formed, in which a cup-shaped, rubber-elastic valve body 43 is used in the form of a lip seal. At the bottom of the slider 11 is still an axial Spring tongue 44 is formed, which is a radially projecting, T-shaped Actuator 45 carries that when inserted Switching device in the region of a recessed grip 46 of the housing 3, 4 protrudes from the bottom of the handle.

The well-recognizable in Fig. 5 third sleeve 12 is as an outer Guide sleeve for the slider 11 is formed. she has a substantially cylindrical sleeve portion 50, whose Inner diameter of the outer diameter of the second sleeve is adapted and whose outer contour is dimensioned so that the sleeve is substantially free of play in the front housing section 4 of the handle housing is inserted. At the Bottom of the sleeve section is one to interact provided with the wall opening 42 of the slider, radially continuous sleeve wall opening 58 formed. Two in one piece formed on the cylinder portion 50, to be aligned to the shower head, resilient axial holding arms 51 engage the side at the water channel 8, where provided there Snap holding projections in locking recesses 52 of the retaining arms. On the axially opposite side are two further resilient axial holding arms 53 with locking recesses 54 intended. At the holding arms is at a distance from the cylinder section 50 a push button 55 connecting the holding arms is provided, the upon insertion of the third sleeve 12 in the handle portion 4 in a corresponding recess 57 on the Top of the handle portion 4 snaps to the third sleeve 12 captive set in the front handle part 4. When assembling the handle with switching device engage the holding arms 53 by means of the recess 54 at accordingly shaped latching projections 56 of the first sleeve 10 a and thereby axially connect the first and third sleeves positively, whereby the housing sections 3 and 4 axially fixed to each other. To solve the locking connection it is only necessary to press the push button 55 and the now released parts 3 and 4 or 10 and 12 subtract from each other.

To install the switching device in the handle of a Hand shower can, as shown in Fig. 6, the guide tube 12th are inserted into the front handle section 4 until the push button 55 engages in the upper housing opening 57. The first sleeve 10 is from the hose connection side in the rear handle section 3 inserted and held. Then, the slider 11 can be inserted into the third sleeve 12 become. Subsequently, the handle parts can be pushed under the sliding sleeve 11 on the hose connection pipe 10th axially pushed together until the holding arms 53 at engage the first sleeve 10 and the sleeve parts 10 and 12th the switching device or the parts 3 and 4 of the handle axially fixed to each other. Then the Shower hose screwed to the hose connection sleeve 5 become. The shower is then ready for use and can through manual displacement of the slider 11 in the axial direction between the throttle position shown in Fig. 1 with reduced Flow area and connected water jet pump and the passage position shown in Fig. 2 with switched off Water jet pump and enlarged passage cross-section be switched.

In the throttle position shown in Fig. 1, the slider or dimmer 11 until it stops against the shoulder 21 in the direction Hose connection end retracted. This gets the Ring cord seal 27 in sealing engagement with the cylindrical surface 34 of the annular collar 33 and seals the annular space 30 axially. The water flowing in through the liquid inlet 6 flows under acceleration by the diameter constriction in the area 17 in the region of the radial passage openings 25th In the presence of the guide body 60, with his Stamp section 61 the cylindrical outlet section 20 after Close the nature of a piston, the water flows through the Filter slots 25 radially outward into the annular space 30 and from there through the rectangular opening 26 radially inward back in the cylinder portion 20 and along the flow calming and -subtling causing guide rails the body 60 through the sleeve 35 to the outlet opening 38. By the double radial deflection of the entire Water flow in the region of the radial openings 25, 26 becomes a achieved dynamic throttle effect. This is reinforced by that the outlet opening 38 only about 9% of the passage area of the liquid inlet 6 has. This necking in the flow path causes the water under high speed from the pump jet as a Water jet pump acting outlet 38 in the downstream Cavity 40 injects.

The pump chamber 40 is over in the slide position shown the sleeve wall opening 42 of the slider and with this aligned, slightly smaller sleeve wall opening 58 of the guide sleeve 12 and an axial channel, not shown, between Guide sleeve and housing wall 4 with the area of the outdoors leading opening for the operating lever 45 is connected. Through the air supply channel formed thereby air is over the valve 43 in the open position in the pump chamber 40 sucked in, mixes there and further downstream with the injected water and enters the area of Shower head together with the water in the form of a sparkling, soft-feeling water jet. At usual water pressures causes the throttling, that in throttle position typically about 9 to 10 liters of water per minute through the Flow switching device. The water pressure is heavy here such on the slide 11, that this with free mobility forward, that is, away from the first sleeve, pushed would. This automatic shift is thereby counteracted that the slide in the position with open Air intake channel snaps into place on the housing. For this purpose has the Spring tongue 44 a downwardly projecting locking lug 47, the at the throttle position (Fig. 1) in the region of the passage opening for the lever 45 and 44 by the force of the spring pressed down, creating an automatic shift the slider forward by stopping the latch 47 on Housing 4 is prevented.

The slider device 11 can be switched on with water supply simply by throttle position with air supply (Fig. 1) in the unthrottled open position (Fig. 2) switched be that the actuator 45 slightly after inside is pressed. As a result, the locking lug 47 is disengaged with the housing wall 4 and the slider 11 can under Influence of water pressure automatically slide forward until the lever 45 abuts against the housing wall 4. By in the Magnitude of a few millimeters lying axial displacement the slide 11 with respect to the housing-fixed sleeves 10 and 12th becomes the sealing engagement between first sleeve 10 and slider 11 in the region of the front seal 27, 34 repealed, whereby in this area an axial passage between the annulus 30 and the downstream pump room 40 created becomes. At the same time through the sleeve wall opening 42 formed channel portion of the air supply channel opposite the channel portion formed by the wall opening 58 so offset far axially, that the channel sections no longer overlap and the air supply duct is sealed airtight. A water outlet from the pump chamber 40 through the air supply channel to the outside is prevented by the lip seal 43, which is impermeable in this direction and thus one Leakage protection causes.

In the unthrottled position are exclusive through the first sleeve 10 incoming water two passage cross-sections or in comparison to the throttle position significantly larger passage cross section available. The inflowing Water passes through the radial opening 25 in the area of the annulus 30. A subset can through the rectangular openings 26 in the area of the guide body 60 and of there through the sleeve 35 to the pump jet opening 38 or below To bypass the sleeve 35 to the liquid outlet 7 flow. Of the normally according to the flow resistance conditions In contrast, larger proportion flows through the in the area of Ringbundes 33 formed further passage cross section partially bypassing the sleeve 35 on the outside over to the outlet 7, wherein a part through the sleeve 35 to the Outlet 7 can flow. It stands next to the water through the pump jet opening 38 formed passage cross-section another, concentric around them Passage cross section available. The separated by the Passage cross sections unite flowing streams in the pump chamber 40 and flow together through the Fluid outlet 7 and the water supply channel to the shower head. The Gesamtdurchlaßquerschnitt may be sized so that at usual water pressures about 20 liters per minute through the switching device flow. This stands on the outlet side pro Time unit about twice, essentially free of air water available as in the throttle position shown in Fig. 1.

So while in the throttle position (Fig. 1) water saving a soft, strongly air enriched and mixed Water flow can be discharged is in the unthrottled Position (Fig. 2) a comparatively strong, air-free Water flow deliverable, for example, for massage purposes is usable.

This explained using the example of a preferred embodiment Principle of the connection of another passage cross-section when switching off the water jet pump can on many others Types are also realized. For example, the the beam calming and mutual guidance of the sleeves 10 and 11 serving guide body 60 accounts. Likewise possibly omitted the central sleeve 35 in the slide 11. It is also possible to hold a sleeve in the manner of the slider 11 and to design another sleeve of this relative to displaceable. A changeover can possibly also be caused by twisting be achieved by sleeves or other elements against each other. To reduce the noise of the sanitary fitting can downstream of the switching means a sound damping device be provided, for example in shape a sound-absorbing foam filling in the space between Water supply channel 8 and housing wall 4. Also in the air supply channel Soundproofing measures may be provided, for example by filling a section with open-celled Foam. The generated by the water jet principle Vacuum can also be used to the flowing through Water liquid additives, such as soaps or other cleaners to mix. Also the use Such switching devices on hand showers is not mandatory. So also fixed installed showers or Taps on washbasin or the like with inventive Umschaltalteinrichtungen be equipped.

As mentioned above, the hose connection 5 and the serving as a filter radial flow section 24 having Sleeve 10 of the other components of the sanitary object or hand shower designed removable. When disconnecting from Sleeve 10 and slide 11, the guide body 60 with the piston-like stamp from the radial flow section 24 or the outlet section 20 taken out, so that he axial passage opening no longer closes. About in Filter retained particles can do so easily flushed out axially and thus the filter to be cleaned.

Claims (20)

1. Plumbing fixture, especially a handheld shower head, with a switching device (2) to influence a fluid stream with a fluid inlet (6), a fluid outlet (7), and an air intake device that is turned on or off by actuating the switching device (2) and functions like a water jet pump and has at least one pump jet opening (38) connectable to the fluid inlet, and the pump jet opening ends in a pump chamber (40) connectable to the outside via at least one air supply channel, characterized in that a flow cross-section formed between the liquid inlet (6) and the liquid outlet (7) is expandable by turning off the air intake device.
2. Plumbing fitting according to claim 1, characterized in that when the air intake device is turned off, the flow cross-section can be expanded to more than 1.5 times, in particular 2-3 times the flow cross-section when the air intake device is opened, and/or the flow cross-section can be expanded so that the amount of water flowing per unit of time is approximately 1.5 to 3 times, in particular approximately 2 times, as large when the air intake device is turned off than when the air intake device is turned on.
3. Plumbing fitting according to claims 1 or 2, characterized in that the flow cross-section of the pump jet opening (38) is smaller than the flow cross-section of the liquid inlet (6), whereby it is preferably less than 30%, and in particular between approximately 5% and 20%, of the flow cross-section of these liquid inlet (6).
4. Plumbing fitting according to one of the prior claims, characterized in that a flow calming device (60) is provided to even out the flow passing through the pump jet opening (38) that preferably has a plurality of axial guide strips preferably arranged crosswise upstream from the pump jet opening (38).
5. Plumbing fitting according one of the prior claims, characterized in that at least one flow channel (30) in addition to the pump jet opening (38) can be opened preferably when the air intake device is shut off, whereby liquid can preferably flow through the pump jet opening (38) and the other flow channel (30) when the air intake device is shut off, whereby the other flow channel is preferably essentially concentric to the pump jet opening (38) and is especially designed as an annular channel (30) surrounding the pump jet opening, and/or the other flow channel can be opened or closed especially by an axial relative movement of a first sleeve (10) and a second sleeve (11) that telescopes with the first sleeve.
6. Plumbing fitting according to one of the prior claims, characterized in that the switching device (2) has a liquid-guiding first sleeve (10) that can telescope with a separate second sleeve (11) and in particular can intermate with it to create a gap (30) between the sleeves (10, 11) through which liquid can flow, at least in an axial section.
7. Plumbing fitting according to one of the prior claims, characterized in that a first sleeve (10) that telescopes within a second sleeve (11) has a radial flow cross-section (24) with at least one passage (25, 26) through which liquid can radially flow, by means of which the inside of the first sleeve (10) can be connected with a gap (30) between the first sleeve (10) and the second sleeve (11) for liquid to flow.
8. Plumbing fitting according to one of the prior claims, characterized in that it has a first sleeve (10) forming a liquid inlet (6) that preferably has a narrowing inner diameter in the direction of flow that preferably narrows in stages, and/or a outer diameter that narrows in stages, whereby the first sleeve (10) preferably has a sealed section (22) preferably provided with peripheral cord packing (23), and the sealed section is sealed in a second sleeve (11) and can be axially inserted in the second sleeve, whereby a radial flow section (24) is preferably provided downstream from the sealed section (22) with a least one passage (25, 26) through which a liquid can flow radially.
9. Plumbing fitting according to one of the prior claims, characterized in that the first sleeve (10) has a sealed section downstream from a radial flow section (24) preferably provided with a peripheral cord packing (27), and the sealed section interacts with a sealed surface (34) of a second sleeve (11) surrounding the first sleeve (10) so that the seal can be created or removed by axially moving the first sleeve (10) and the second sleeve (11) in relation to each other.
10. Plumbing fitting according to one of the prior claims, characterized in that the switching device (2) has a second sleeve (11) that can telescope with a first sleeve (10), and the second sleeve can move axially relative to the first sleeve (10) and/or a third sleeve (12) and/or a housing (3, 4) of the plumbing fitting, whereby especially the dimensions of the second sleeve (11) are such that the first sleeve (10) is sealed at the sealing section (22) when the second sleeve executes an axial relative movement, and surrounds the first sleeve at a radial distance at the radial flow section (24) to form an annular channel (3), whereby the annular channel (30) downstream from the radial flow section (24) is opened or closed when the first sleeve (10) and the second sleeve (11) move axially in relation to each other.
11. Plumbing fitting according to one of the prior claims, characterized in that the switching device (2) has a third sleeve (12) designed as an axial guide for the second sleeve (11), and the second sleeve (11) is axially moveable in the third sleeve and sealed preferably by at least one cord packing (41), whereby the third sleeve (12) is preferably designed to be fastened to a housing part (4) of the plumbing fitting without tools, whereby the third sleeve (12) is preferably insertable into the housing part with which it can lock, and/or the third sleeve (12) has a locking element in the form of a catch (55) that is preferably manually actuated and penetrates a housing opening (57) of a housing part (3), and/or the third sleeve (12) can be attached to the first sleeve (10) without tools, especially locked to it, and/or the first sleeve (10) and third sleeve (12) form an axial guide for the second sleeve (11) that can move relative to the other sleeves.
12. Plumbing fitting according to one of the prior claims, characterized in that the air supply channel can be opened and closed by the relative movement of two telescoping sleeves (11, 12), whereby the air supply channel preferably has a first channel section (42) designed as a wall opening of a sleeve (11), and the first channel section is movable, especially axially movable, relative to a second channel section (58) designed as a wall opening in the other sleeve (12) between positions with and without the cross-sections of the channel sections overlapping, whereby a valve body (43) is preferably provided in at least one of the sleeve wall openings (42), especially in the form of a rubber-elastic lip seal inserted in the sleeve wall opening.
13. Plumbing fitting according to one of the prior claims, characterized in that there is at least one valve (43) in the air intake channel that independently opens in the intake direction and independently closes in the opposite direction, especially in the form of a rubber-elastic lip seal insertable in a channel section (42).
14. Plumbing fitting according to claim 1, characterized in that the air supply channel is assigned at least one acoustic signal generator which can be activated by a vacuum.
15. Plumbing fitting according to one of the prior claims, characterized in that the switching device (2) can be exchanged without tools on or in the plumbing fitting.
16. Plumbing fitting according to one of the prior claims, characterized in that the switching device (2) is in a handle (1) of a hand-held shower head, whereby the handle preferably has two axially connectable handle sections (3, 4) in which at least one part of the switching device is insertable, and/or the switching device (2) is within a preferably dividable handle (1) of the hand-held shower head, and is preferably exchangeable.
17. Plumbing fitting according to one of the prior claims, characterized in that upstream from the pump jet opening (38) there is a water filter (24) whose passage is smaller than that of the pump jet opening (38) and is preferably also smaller than that of the jet formers of the plumbing fitting.
18. Plumbing fitting according to claim 17, characterized in that the water filter is cleanable and has a filter surface that is formed by a sleeve through which a liquid can radially flow, the water filter is releasably sealed at a downstream end when operating, and liquid can flow radially through the water filter to clean it.
19. Plumbing fitting according to claim 17 or 18, characterized in that the water filter (24) is designed as a radial flow section especially having slots (25).
20. Plumbing fitting according to one of claims 17 to 19, characterized in that the water filter (24) opens axially when it is removed from the plumbing fitting, and liquid can flow axially through the filter to clean it when it is removed.

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