DE1528603A1 - Nebulizer pump - Google Patents

Description

Atomizer pump

The invention is directed to a new and improved one Atomizer pump for small portable containers for atomizing perfumes, insecticides, deodorants, medicines

In particular, the invention is concerned with an improved Piston atomizer pump, which is in the opening of a portable container for perfumes, insecticides, deodorants, Medicines and the like can be attached, and due to their relatively simple structure, they can be poured out

Can produce plastic materials that relatively are, so that the atomizer pumps according to the invention

909831/0631

Bank account: Dresdner Bank AG Herne 2436 - Postal check account: Dortmund 55868 - Teltgrommonschrlff:

tirpätente Herneweitiale

be mass-produced and sold as a disposable component with such containers can.

Clay hand operated nebulizer pumps for portable containers for dispensing liquids such as perfumes, medicines and insecticides, 'are well known and are used by manufacturers for their usefulness and ease of operation widely used since it is desirable to manufacture disposable nebulizer pumps, which can be sold with the perfume or medicament containers; it is necessary to have such atomizing devices made from cheap materials and given them a simple structure. As a result the need for cheap and simple construction and because of the fact that such disposable atomizers Can be used with portable containers that can be tilted or reversed to result in up some serious nebulizer pumps manufactured Defects that make them unusable for various reasons.

Because the disposable en nebulizer pumps cyemäii the present Invention with portable containers for liquids, for example, perfumes and insecticides, are combined and v / e have containers and pumps prior to shipment

SAD ORIGINAL - 90Θ8 31 / 0Ϊ3 1

M '; * wants to assemble in the factory, the ■. ι requirement that these pumps do not leak, so that the ^h \ contents of the container can not escape through the spray aperture when the container and pump during handling or Vereohiokung be reversed or tilted. The solution to this problem is to provide an expandable chamber pump construction in which the pump cap and a piston plunger provided with tenfeils can be pressed down and fixed so that a seal is created to prevent passage through the timer opening. Although this creates a non-leaking pump, this solution proves to be unsatisfactory for economic reasons, since additional threads must be present to secure the pump cap and the plunger in the depressed state. This solution also creates additional inconveniences for the end user of the nebulizer, who has to unscrew the cap in order to allow the pump plunger and piston to rise prior to actuation of the nebulizer. It is also necessary that the user now secures the cap and plunger in the depressed state again in order to make the pump leakproof again.

A second disadvantage of the "known atomizer pumps" is the need to provide a one-way check valve between the discharge outlet and the pump chamber to prevent air being drawn in from the atmosphere

- 4 909831/0631 -

BAD ORK51NÄ.

Sphere into the pump chamber during the upstroke of the pump piston. In the usual design of a non-aerosol atomization pump, the liquid is turned off the container is drawn into the pump chamber by the upward movement of the pump plunger, -the a partial vacuum generated within the pump chamber. Without a check valve between, the outlet outlet and the pump chamber The upward movement of the pump piston would move air from the atmosphere into the pump chamber throughout Upstroke of the ram, so that insufficient or no amount of liquid from the Container is sucked into the pump chamber. As a result, a one-way check valve was used in the known designs, for example a ball valve built in to allow air to flow into the pump chamber Prevent fcu · This of course leads to an increase in the cost of manufacturing known atomizer pumps ·

The aim of the present invention is thus to provide a simple, inexpensive, reciprocating piston atomizer pump with a leakage of liquid from the container into the pump outlet is impossible if the plunger is not depressed in its upper position.

The invention is further directed to creating a simple and cheap atomizer pump for

908831/0631 _ßAD -

dust a solid amount of liquid with each downward stroke of the punch without being forced to be present '' a check valve between the pump chamber and the outlet outlet

Another object of the invention is to provide a improved nebulizer pump, which results in the complete nebulization of a predetermined amount of liquid the compression of a limited amount of air with this liquid in the pump chamber before release of the liquid in the outlet nozzle.

Further objects and features of the invention will become apparent from the following description in conjunction with FIG Drawings. The drawings show in

Fig. 1 is a longitudinal section through an atomizer pump according to the invention, the stamp in its top position is j

FIG. 2 shows a longitudinal section corresponding to FIG. 1, but in which the punch is at its lowest Position is j and in

3 shows a section along line 3-r3 in FIG. 1 to reproduce the design of the pump chamber of the atomizer pump according to the present invention.

9 0 9 8 3 1/0 6 3 1 bathroom original

Fig. 1 shows an embodiment of the subject matter of the invention with a main part 10, with a pump socket 11, a threaded cap 12 and an upwardly extending singing flange 13. As can be seen from FIG. are the pump sleeve 11, the threaded cap 12 and the annular flange. 13 in one piece and in a single operation manufactured. However, it can also be a matter of separate parts, and other methods of sealing can be used the spray pump with the liquid container used

The threaded cap is screwed onto the neck of the container, As indicated by dashed lines, there is also an annular seal 14 to prevent leakage the liquid provided. The lower end of the pump tibet 11, which is in the liquid container extends, can be so long that it extends to the bottom of the liquid container, or can be attached to a tube 15 connected to the bottom of the liquid container

A piston 16 is located in an inner cylinder 17, which extends in the axial direction of the pump sleeve 11. A punch 18 is connected to the upper surface of the piston 16 and extends upwards over the upper

il of the annular flange 13 to form a seat 19 for a stamp cap 20. The stamp cap 20 contains

- 7 -8098 31/0631 ^PAn

; \ '* an outlet nozzle 21 and is in the illustrated in Fig. 1 again \ given embodiment with an upper closure surface ! 'before 22, which carries a housing 23. The case 23 serves to protect the plunger cap 20 and the outlet nozzle 21 and provides a better appearance of the Atomizer · The housing 23 has an opening 24 opposite the outlet nozzle 21 through which the atomized ßibhl goes through

The punch 18 has an enlarged diameter having part 25 at the lower end in the vicinity of the piston 16. The part 25 with enlarged diameter, which is slightly smaller than the diameter of the inner cylinder

17 1st, provides an additional bearing surface within the inner cylinder 171 which helps support the piston 16 and to keep the inner cylinder 17 axially aligned " At the junction of the enlarged diameter part 25 and the narrower part of the punch

18 there is an annular flange 26 with a stop ring 27 comes into contact when the piston and the punch 18 are in their uppermost position according to Fig. «The stop ring 27 is with a badial ring provided, which is pressed into a corresponding hanging groove 29 in the lower part of the annular flange 13 of the main part 10 is · A helical spring 30 surrounds the upper part of the punch 18 and lies against the lower surface of the stamp

_ cap 20 and the upper surface of the locking ring 27,

- 8 909831/0831 bathroom

in order to push the piston 16 and the ram 18 into their upper position, as can be seen from FIG.

The punch 18 contains an axial fluid channel -31, which extends from the upper end of the stamp 18, where it communicates with the outlet opening 21, extends to piston '16

The piston 16 contains an axial recess 32 for receiving the lower end of the punch 18. The recess 32 in the piston 16 has a radially extending annular groove 33 'in which a corresponding opposite the end of the punch 18 snaps into place · Although the piston 16 and punch 18 are shown as two pieces in FIG which are snapped together before being inserted into the pump housing 11, they can of course be designed as a one-piece element even in a single operation. Used preferably however, the punch 18 and piston 16 are separate parts

The piston 16 contains at least one radial fluid channel 34 »which extends from the outer bearing surface of the piston 16 extends to the center, where it merges into the liquid channel 31 in the punch 18.

The part of the pump housing 11, which is directly

- 9 -Ö09831 / 0631

located below the basket 16 "when the piston 16 in its highest position after Pig. 1 stands, contains a liquid chamber 35 having the same diameter as the inner cylinder 17 has. Part of the wall of the liquid chamber 35 is enlarged in the radial direction, as can be seen from FIGS. 1 and 3, so that a liquid bypass 36 is formed, which is after extends down from the lower edge of the piston 16 when the piston 16 is in its uppermost position »

The liquid chamber 35 ends in a conical recess 37> whose smaller end points in the direction of the bottom of the main part 10 and is connected to the tube 15 stands. The larger diameter of the conical recess is smaller than the diameter of the liquid chamber 35> as can be seen from FIGS. 1 and 2, which forms an annular bearing surface 38.

An annular stop member 39 rests on the bearing surface 38 and. is caused by friction between its outer surface and the walls of the liquid siammer 35 in place held. The stop member 39 has a radial groove provided on its lower surface, which allows the passage of the liquid from the conical recess 37 to the The lower end of the liquid shunt 36 enables, as can be seen from FIG

909831/0631. ^ßAD

preferably one or more radial grooves 40 both on the upper as well as on the lower surface by the radial grooves 40 on both surfaces it is impossible for the annular stop member to go backwards or upside down to be inserted below when assembling the nebulizer pump.

The annular stop member 39 has two functions. It acts as a stop member to determine the lowest Position of the piston 16. As can be seen from FIG. 2, the lower surface of the piston 16 meets the upper surface of the annular stop member 39 »thereby providing the downward path for the piston 16 and the Stamp 18 is limited

The second purpose of the annular stop member 39 is to create a partial closure of the conical Recess 37 »in which a ball valve 41 is enclosed is. The diameter of the valve ball 41 is larger than the smaller diameter of the conical recess and as a result, this ball acts as a one-way check valve to control the flow of liquid from the container to the liquid chamber 35 · The function of the ball valve 41 will be described in more detail in the following description of the mode of operation of the invention Atomizer will be explained.

BATH 909821/0031

Fig. 2 shows the atomizer pump with in the lowest Position of stationary piston 16 after completion of the downward pumping stroke · The downward pressure from the upper part of the housing 23 is removed, then the spring 30 provides for the plunger 18 and piston 16 to begin their upward or return stroke · How to get out As can be seen from Fig. 2, during the first part of this upstroke, the radial fluid channel 14, 34 is in the piston 16 in connection with the liquid bridge 36 in the liquid chamber 35t so that a partial vacuum in the liquid chamber 35 by the upward movement of the piston 16 air from the atmosphere through the The outlet opening 21 is sucked into the liquid chamber 35 At the same time, the partial vacuum in the liquid chamber 35 causes the valve ball 41 to lift off and the upward flow of the liquid from the container into the liquid chamber 35 '

As soon as the piston 16 has risen to the position where the radial fluid channel 34 is above of the upper end of the liquid bypass 36 is located and the lower web 42 of the piston 16 has covered the bridge 36, air can no longer enter the Liquid chamber 35 sucked in from the outlet opening 21 and during the remainder of the upward travel of the piston 16, only liquid is drawn from the supply pipe 15 into the liquid chamber 35 via the ball valve 41

- 12 ^ - 909831/0631 BATH ORIGINAL

sucked until the Kolbea 16 is in top position Fig. 1 has reached »

In this Euiüct the I ^ lüßig & eitskainiaei · 35 -partly filled with liquid tmd contains, as mentioned above, a charge to I? u £ t »Bas KugelYeatil has calibrated in the co-

nisehc- AiisiiäLmiSg 37 Gegetsv ,, ec 'that liquid uad air in ds τ Ütaster B ^ never 1 it nabii with «- *; - la the container flow kü £ äe2.;>Ti-yj' $ -ώ * ΐ & S ^ is * g ^ 5 - ·? » . ^ ollissiw 16 is eich, above the oifeerera Sadesi dex * i ^ liioeigkeitsüberbruckung 36j, so that l: «lae f: Lüsüß, li:« tt eds »liaft» from the Vltiesig koit.'sk & ik · "! '" *? 35! Itiei'Jietesi l: itojiaÄj W5n: n Pump uad 'Reservoir02? or being tilted * ■;

lisle ·; it all dc-fe. ΐϊΐΛ? ί; 3ΐ; ίίΛ J2> der reivßs? e, web 42 & *> ί .; l der Egw # giii; $: the 35 siisf ^ ri *; .- '' - '. S

dts "piston 16 cenii wslirend the ereten ift iiiaerhalb the llüa-»>: <? -Mnfcij.ro web 42 da?;,
g, 'U ¹ J *. S6 releases ULM,

der i'adial «flii & üigk- d '^ L« - 3 *' J '^ J ¹ - »!! 16 in conjunction with the upper one. End dsx · {Tse ^ & riiokttng 36 comes * JUi this Etelle Tena ^ saeiit uex PLoU ^ J, -Sh.2 Dr-'aokäbdfall aiii; Air and liquid in the liquid chamber 35 the AJatbrethan dei? 'Liquid wad the Ämatritt dyroh d # n radial fiüßöigkeitEkanai 34 near the opening in sight of the exit nozzle 21. With further downward movement of the piston 16, the heat of liquid and air is upwards

BATH

909831/0631

through the liquid channel 31 and to the outlet nozzle 21 / where the liquid emerges as a fine mist At the end of the downward stroke of the piston 16, the pressure is within the liquid cooler 35 and the bridge 36 equal to atmospheric pressure, and consequently the subsequent upward movement of the piston 16 generates a Partial vacuum within the liquid chamber 35 », which means air is sucked in through the outlet nozzle 21 and a new amount of liquid upwards via the ball valve that has become free 41 is deducted as explained above.

In normal operation there is a slight air flow via the seal 14 in the threaded cap 12 to prevent the formation of a partial vacuum in the liquid container. However, while using this frequently Air passage is no longer sufficient to allow the liquid compensate for loss of power from the container, so that. a deil vacuum forms, which ensures that the Valve ball 41 remains seated so that the pump no longer works. To correct this condition, An opening 43 in the pump housing 11 allows air to enter the container through the space between the piston 25 and the cylinder wall 17 when the piston 16 is depressed, as can be seen from FIG. Located the piston 16 is in its uppermost furnace position

^; - 14 -

909831/0131 ORIGINAL BATHROOM

- ■ ■ ■ -%

--ι * - 1528803

• ■ • Τί-naoli Fig. 1, then the uppermost web 44 of the yv closes

Piston 16 from the opening 43 and prevents plus \ exits sigkeit from the container when dispensing pump and container are inverted or tilted · -

The numerous advantages of a nebulizer pump design in accordance with the present invention are readily apparent. Due to the fact that a small amount of air is sucked into the liquid chamber 35 without the upward movement of the piston 16, it is possible to pressurize air and liquid within the liquid chamber 35 during the initial downward movement of the piston 16, and thus the mixture of air and to prepare liquid for immediate atomization when-the lower land 42 of the piston runs over the upper end of the liquid bridge 36.As already mentioned, the known atomizer pumps with a ball check valve prevented the entry of all the air in between the outlet opening and the liquid chamber The fluid chamber, since the ball valve settles and seals the air channel "as soon as the piston begins to rise" Without the presence of at least a small amount of air, a pre-compression of the charge in the fluid chamber is impossible, since the fluid to be atomized is no longer necessary .1

^BAC>

199331/9931

XIn another gate part of the atomizer pump according to the Sr- \ \ finding it can be seen that the gate compression, the οι T,. * Sur & SrBeugU e 1st required an effective atomization or Aufbreehens the liquid within the liquid chamber 35, can be changed by adjusting the amount of air that is sucked in the upstroke of the piston 16 into the liquid chamber duroh. 39 In addition, the length of the downward stroke of the piston 16 is adjusted το * the point in time at which the lower web 42 runs over the upper drawer of the liquid bridge 36. The amount of air sucked into the liquid chamber 35 and the Torkompresslon of this air can be changed 8 all separate parts it is possible to change the design of the piston 16 po so that the desired changes in the compression and in the air inlet result, while the usual parts of the pump remain normal parts Build atomization properties, using pistons of different dimensions, but making all other parts interchangeable «

- patent claims -

8AD

909831/0631

Claims (1)

Claims . 1. Device for dispensing a liquid in Perm of a finely divided mist by an elongated, hollow housing part (11), the lower end of which with a container for the liquid in. connection stands while its upper end. ■ freely into the atmosphere- discharges through a liquid chamber (35) between the upper and lower end of the housing «(11) | by a piston (16) in the liquid chamber (35) with an upper and a lower Web (44, 4h2) and one extending therebetween radial liquid channel (34) f through a of the upper surface of the piston (16) extending beyond the upper end of the housing part (11) than Means for depressing the piston (16) serving Stamp (18) with a liquid channel (31) ι the radial liquid channel (34) in the piston (16) with the The dispensing nozzle (21) on the stamp (18) above the housing part (11) connects! by a first stop (27) to determine the upper piston position j a second stop (39) for determining the lower piston position ι by resilient devices (30) for Apc Push the piston (16) against the first stop (27) j by a liquid bridge (36) in the Liquid chamber (35) »whose lower end with the Liquid in the container is in communication, and their 8AD ORIGINAL 909831/0631 upper end is under the lower web (42) of the piston (16) standing in its uppermost position, so that. When the piston (16) is in this position, no liquid can pass through the piston (16)! while the bridge (36) itself with the radial channel J (34) is in communication when the piston (16) is depressed, so that the liquid passes upwards the plunger (18) can flow to the dispensing nozzle (21) and further characterized by a valve (4-1) between the lower end of the liquid bridge (36) and the liquid container to prevent the liquid from flowing back from the liquid chamber (35) to the container, which however allows the flow in the other direction » 2 _β device according to claim 1, characterized in that the valve (41) is a ball valve which sits tightly on a valve seat (37) in the housing part (11), 3. Apparatus according to claim 1, characterized in that the radial liquid channel (36) in the piston (16) is below the upper end of the liquid bridge (36) when the piston (16) is in its lowest position, so that the initial upward movement of the piston (16) - 18 909831/06 31 - draw air from the atmosphere into the liquid chamber (35) until the radial fluid channel (36) is above the upper end of the fluid bridge (36) is located, and is further characterized by ^ that the lower web (42) of the piston (16) at a distance above the upper Indes of the liquid bridge (36) is when the piston (16) is in its uppermost position, so that at an initial Downward movement of the piston introduces air and liquid into the liquid chamber (36) and there are pressurized until the radial fluid channel (36) comes into contact with the liquid bridge (36) in the liquid chamber (35). 4 · Device according to one or more of the preceding Claims, characterized in that a cylinder (17) for the piston (16) is located within the housing part (11). 5. Device according to one or more of the preceding claims, characterized ich.net that Piston (16) and punch (18) are made from one piece 6 · Device according to one or more of the preceding Claims, by which I mark n. Et that - 19 -909831/0831 bad original the housing part (11) and the pump arrangement located therein are covered by a cap (23). β Vorrj.uvbunr; after one or more of the previous ones Claims, characterized in that their main parts are made of plastic » BATH ORIGINAL 909831/0631 Blank page