DE1972000U - PUMP CHAMBER SPRAYER. - Google Patents

Description

by, a seal (28) can be closed and that the Connection channel (30 or 35) to the nozzle (18) in the area between the upper (27 or 36) and the lower seal (28) opens, while the connection channel from the liquid container to the ambient air in such an area of the bore ends in the guide part (l), which is sealed in the rest position of the piston by the upper seal (27 or 36).

4. Atomizer according to claim 1 or 2, characterized in that the piston guided in the pump chamber (4) is a hollow one Stepped piston (7, 7a) is executed, in the interior of which a piston rod (9) firmly connected to the pusher (16) in the area the step (7a) is sealingly guided, which has a valve body (1O) at the lower end, which by the spring (11) is pressed against a seat (13) of the hollow piston and takes the piston with it into its upper end position, in which it is with his shoulder a connecting channel (8) between the liquid container and ambient air interrupts.

5. Atomizer according to one of claims 1 to 4, characterized in that that the atomizing nozzle (18) is arranged in the trigger (l6) and the connecting channel (30 or 15) to The atomizing nozzle runs inside the piston rod (25 or 9) and above the lower seal (28 or 10) from the Piston rod exits.

6. Atomizer according to one of claims 1 to 4, characterized in that that the atomizing nozzle (18) is arranged in the screw-on part (1) and via a channel (35) with the pump chamber is in communication.

7 · Atomizer according to one of claims 1 to 6, characterized in that that the pusher (16) with the screw-on part (l) forms an air compressor chamber (22) which has a Channel (23) is connected to the channel (24) for the liquid to be atomized in front of the nozzle (18).

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υ. RT3CHTS.VNWAI.T - H.TON SCKUMANW

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Widenmaijerstraße 5

Telephone 224893

28.11.1968 ö / Bö

GERMAN PATBNIAMS

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Zweibrtiokenstrasse 12

Re: Gbm 1 972 000 (SOOIETE TEOHNIQUE DE PULVERATIOB) Reference: Registration decision dated September 28, 196?

Attached is a version of the usage pattern registered on November 2nd, 1967 under the Hummer 1 972 000 · With the new request for protection, the utility model object from the Teohnik state, which has meanwhile become more well-known: more clearly delineated. The. Previous Figures 5 and 6 and the associated friction sides have been deleted.

Investments

Patent and lawyer

Gbm 1972 000 28.U.1968

6 / BÖ

Sooieta Teohnique de Pulverization (Step) Paris, France

Pump chamber atomizer

The control concerns a pump chamber atomizer, especially for cosmetic and pharmaceutical liquids » which can be applied to a container containing the liquid to be atomized and into this by means of a conduit tube in, which is via a Rüoksohlagventll, a pump chamber, a hollow piston and a hollow piston rod with an atomizing nozzle is in communication, which is located in a pusher connected to the piston rod, with in the pump chamber Sucked-in liquid by actuating the trigger or the piston rod against the action of a pedal compressed and thru the connecting channel to the atomizing nozzle is promoted and a © via a further connecting channel between the liquid container and ambient air the volume of liquid in flows into the liquid container.

In the case of a known liquid hand pump (British Patent specification 910 79l), the piston guided in a pump chamber is designed as a hollow piston bohle piston rod is connected to a pusher having an atomizing nozzle. To achieve a suction effect is A ball valve is provided in the piston, which is placed on its seat during the suction stroke, and the connection to the atomizing nozzle interrupts. To enable a Druok equalization

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ohea between the container in which the atomizing liquid is located and the outside air, the inside of the container is connected to the ambient air via an opening in the upper sand of the pump chamber it can also escape on the way over the hollow piston and the nozzle _f since the ball valve is only on a seat under the action of gravity. When the nebulizer is not in use, it is possible to close the ventilation opening by inserting the pusher into that part which is used to hold the pump chamber, but then there is always the possibility that liquid can escape via the hollow piston. This embodiment is also awkward to use, as the Droker always has to be unscrewed from its seat before use *

In another known atomizer (British patent specification 891 908), in which the spark chamber has a fixed piston can be moved, the ventilation channel is closed by an edge on the pump chamber, which under the action of a spring the Durohfüxungs · » opening for the pump chamber is removed. That way you can Although no liquid escapes through the ventilation channel, there is an exit of liquid from the pump chamber possible via the atomizing nozzle because the interruption of this is possible Verblndungskanal only by a loose on its seat stationary valve ball takes place »Even if the container remains in its upright position, liquid can pass through it Evaporate away. This is particularly effective with expensive liquids disadvantageous.

... _t , ^ There is also a known liquid pump (French patent specification 1 177 620) which pumping the au

Liquid-containing container, in particular can be screwed onto a perfume bottle. It is in a pump chamber a hollow piston is arranged, which is firmly connected to a hollow piston rod and a pusher. At the • Push the piston or piston rod into the pump chamber the liquid in it is thrown through the inside of the piston rod and over a valve flap by means of a mouthpiece located in the pusher near the outside conveyed At the same time, when the piston is depressed an annular gap is released between the pump housing and the piston rod, so that a pressure equalization between the liquid container and the outside air can occur. With this well-known However, the pump has the disadvantage that it is located in the Liquid located in the pump chamber can leak if the perfume bottle is overturned, as the connecting channel valve flap interrupting between the pump duct and the mouthpiece not resting firmly on its seat «Even with external negative pressure, for example when the user of the perfume pump is is on a mountain or in an airplane, there is a risk of liquid leaking out of the pump chamber.

The innovation is therefore based on the task of creating a Create pump chamber atomizer regardless of location of the liquid container and of the pressure of the outside air absolute is tight and which prevents the liquid in the container from evaporating with certainty * This will in the case of a pump chamber atomizer, the one indicated at the outset Type achieved according to the innovation that the in the pump chamber guided piston is designed as a hollow stepped piston of different diameter ranges, inside the hollow piston rod connected to the pusher is slidably guided, which is at the end facing the pump chamber has at least one bore and a valve body which a spring presses against a seat of the stepped piston and which takes the stepped piston with it into its end position caused by the spring force, in which it both the connecting channel between

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see pump chamber and atomizing nozzle as well as means one due to the piston stages different durometer formed Sohulter the connecting channel between the fluid container and ambient air does not spoil.

In the case of the pump chamber atomizer according to the innovation the piston rod with the piston is not like the known atomizers firmly connected, but a hollow piston rod is guided so as to slide in a hollow piston. In rest position of the atomizer, the Psder located in the pump chamber presses a valve part of the piston rod firmly against a valve seat of the hollow piston, whereby the connecting channel between the pump chamber and the atomizing nozzle is closed. the The piston is designed as a stepped piston and at the same time blocks the larger diameter piston step Connection channel between the liquid container and the ambient air. Daduroh has the advantage that even when When the nebulizer is pushed or the ambient pressure drops, for example in the plug, no liquid is discharged the pump chamber or from the liquid container can.

Advantageously, it is between the hollow piston rod and the inner wall of the stepped piston in the area of the radial Bore in the piston rod has a margin. Daduroh is used when pumping from the pump chamber through the KoI rod hole promoting fluid flow into the interior of the hollow piston rod

The connecting channel zwisohen dip tube and spray nozzle is made via a spherical check valve, the pump chamber, the bore, the interior of the hollow piston rod and a bore of the pusher, awisohen üev connecting channel! Liquid container and Utagebungsluft is through an annular opening in the piston step zwisohen smaller

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Durohmesser and a cover of the pump housingβ and through a clearance between the pump chamber exterior wall and the atomizer housing educated"

According to a further development of the idea of innovation the pusher can form an Luftverdiohtungakammer with the lid of the atomizer main part, dl © via a hole with connected to a feed channel for the liquid to be atomized is.

The innovation is sohematisoh on the basis of that in the figures illustrated esa exemplary embodiments explained in more detail. It show:

1 shows an exterior view of a spark chamber according to the invention, atomizing it;

fig. Z a son through this atomizer χ _η his. Rest position on an enlarged scale \ i

S ¹ Ig. 3 this atomizer with the handle partially depressed

4 shows a three-chamber atomizer similar to the figures 1 to 3 »the jedoah also has an air dilution chamber having.

According to FIGS. 1 and 5, a cylindrical part 1 is screwed onto a container 2, which contains the liquid to be atomized, into the interior of which a threaded sleeve 3 made of plastic is pressed for better sealing serves to hold a pump ammer ^ # 4, the upper at its end 4a carries a collar between a cover la of the cable 1 and an inner projection 3 of the sleeve 3 enclosed 1st.-

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The diameter of this protrusion is larger than the outer diameter the pump chamber, so that two of these and There is a clearance 20 to the projection »The pump chamber is at its lower end duroh a rope 5 extended, which protrudes into the Käh © of the container bottom, wherein A check valve 6 is provided between the pump chamber and the Sauohrohr. A hollow stepped piston 7 »7a is slidably guided in the pump chamber, with its Im Durohmesser smaller stage 7a duroh an opening θ dee Deokels la hindurohfasst. The diameter of the opening 8 is smaller than the outer diameter of the piston stage 7 '' so that as a result an end connection for the stepped piston is created "

Inside the stepped piston 7 »7a is a hollow one Piston rod 9 slidably arranged »the one in the Bereloh of the piston stage 7a is sealingly performed. At the end of this piston rod iat a valve body 10 is provided which is located under the Effect of a leather 11 against a seat 13 of the piston stage 7 applies. The spring 11 is supported on a perforated support disc 12, which forms the upper limit for the valve ball 6. Between the piston rod 9 and the inner wall The piston stage 7 is provided with a clearance 14 with which the interior of the piston rod is connected via a bore 15 "The piston rod 9 is firmly connected at its upper end to a Drüoker 16, which is an atomizing nozzle

18 carries, welohe with the interior of the piston rod via a Bore 17 is connected »The pusher 16 is in ^ orm one Cap formed, which with her lower hand over the aufohraubbaren Part 1 summarizes. To achieve a connecting line between the inside of the container and the ambient air are the openings or the clearances 8tfrauroh an opening

19 In the bundle 4a of the pump chamber 4 connected to each other *

In the rest position, the pedal 11 presses the valve body 10 on its seat 12, whereby each connection of the diving

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tube 5 with the atomizing nozzle 18 is interrupted 1st · Through the effect of the spring 11 is via the piston rod © 9 the Piston stage 7 pressed against an upper Ansohlag * whereby the opening 8 by means of the adjacent shoulder of the piston step 7 sealed 1st «In this way, the connection between the pump chamber and the atomizing nozzle is as well The connection between the inside of the container and the ambient air is also effectively sealed off.

Upon lowering printing the Drüokera 16 of the valve body IO is initially lifted from its seat 13 · The stepped piston is moved at the latest on contact of the piston step 7a on the bottom of the pusher 16 downwards * Duron the lifting of the Sohulter of the stepped piston mn the lid la is the container interior via the openings 8 and 19 and the clearance 20 with the ambient air in connection End position on the cover la and the opening 8 buttocks * The upward movement of the stepped piston 7 »7a generates a negative pressure in the pump chamber 4, which causes a rope of the liquid contained in the container 2 to rise into this chamber. A return of the liquid is prevented by the check valve 6. When the trigger 16 is actuated again, the liquid contained in the pump chamber 4 is forced through the open valve 10 into the annular space 14 and passes through the bore 15 into the interior of the piston rod 9. From from here the liquid is passed through the bore 17 to the atomizing nozzle 18, which ensures the atomization of the liquid enter the container 2, whereby the formation of a sub-pressure inside the container prevents

avoiding the rising of liquid in the 2? also pipe would prevent. ,;

In the embodiment according to ^ igttr..4 a thread 21 is placed on the upper surface of the detachable rope 1, whereby an air compression chamber 22 is created between part 1 and the pusher 16. This:. Chamber is connected via a bore 23 with the Zuführungekanal 24 for the au aerstäubende J ¹ IUssigkeit before the atomizing nozzle ^ ⁸ ". When the trigger 16 is pressed down, the air is fed through the atomizing nozzle, the liquid rising in the hollow piston rod 9 being carried along with it. , ■,.

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Claims (1)

7 - tene liquid through the open valve 10 into the liingrauni 14 and passes through the bore 15 into the interior of the piston rod 9 · From now on the liquid is over the bore 17 pressed to the atomizing nozzle 18, which the Atomization of the liquid guaranteed. When the pusher 16 is depressed, a volume of air that corresponds to that corresponds to the atomized liquid, through the opening 8, the chamber 19 and the clearance 20 enter the container 2 through, whereby the formation of a negative pressure inside ctes container is avoided, which would prevent the rising of liquid in the dip tube 5 » In the embodiment according to FIG. 4, there is a seal 21 placed on aie upper surface of the screw ble part 1 j whereby between part 1 and aem pusher 16 an Luftverdiontungskammer 22 is created. This chamber is via a hole 2;> with the Zuiiiarungskanal 24 for the to be dusted Liquid connected in front of the atomizing nozzle 18. At the. Press down of the pusher 16 is the air of the atomizing nozzle stirred, the liquid rising in the hollow piston rod 9 being entrained In the Ausfünrungsiortn according to Figure 5 is the Putnpenkammer 4 aui a downward approach Ib des auxsehraubDaren Part 1 pressed “The pump chamber 4 is also as in the previous examples the immersion tube t? extended into the interior of the container, wherein the ball valve 6 prevents the liquid from flowing back from the pump chamber in the container. In the pump chamber a piston 26 with a hollow piston rod 25 is displaceably guided, with between pumps ^ ammer and. practice there is a margin. The piston rod 25 runs through the sleeve Ib and is with its upper end 25a, which is a thread has, screwed into an axial extension 16a of the pusher 16- The piston rod has in its middle 8th - Split a portion 25b of reduced diameter, over which a service sleeve 27 is pushed, which in the axial Direction is printed against the extension 16a. The extension 16a of the pusher 16 has a diameter which is slightly smaller than the diameter Ib, while the sealing sleeve 27, which can for example consist of rubber, seals in the bore of the sleeve Ib is performed. On the side of the piston 26 facing the piston rod, a seal 28 is provided, whereby the piston 26 serves not only as a displacement piston, but also as a valve body. Pushes in rest position the spring 11 the piston 26 with its seal 28 against the end of the sleeve Ib, whereby the chamber 4 is closed. In this position, the sealing sleeve 27 is located in front of the opening of a bore 29, which is connected to the opening 19 of the collar 4a is in connection. Finally, there is an axial bore 30 in the piston rod 25 in its lower part a radial bore 31 runs into it and the upper one 'Part via a bore 32, which is provided in the trigger 16, with the atomizing nozzle 18 is in communication. Based From this description it can be seen that the atomizer is perfectly tight in the rest position, since the spring 11 drives the piston 26 presses on its seat, the sealing sleeve 27 at the same time closing the channel 29, which when pressed The pusher 16 is released from the sealing sleeve 27 and thus a connection between the interior of the container and the ambient air manufactures. If the trigger 16 is actuated, the piston 26, as it penetrates into the chamber 4, presses the liquid contained in this chamber through the bores 31 and 31 and the opening ^ a towards the nozzle 18. In addition, instead of the sleeve 27, the extension 16a of the pusher 16 is in front of the channel 29, whereby the inside of the container via the opening 19, the bore 29 and the annular clearance that is present between the extension 16a and the sleeve Ib, with the ambient air Connection is set.