WO2024133534A1 - Atomiser and pump device for such an atomiser - Google Patents

Abstract

The invention relates to an atomiser (100), in particular a pressure pump atomiser, having a spray head (1), a container (2) and a pump device (40) which comprises a pump piston (5), wherein the atomiser (100) is designed such that a medium contained in the container (2) can be sprayed out via the spray head (1) when the spray head (1) is actuated, wherein the atomiser (100) is designed such that, in a first operating mode, an overpressure in the container (2) can be produced by a pumping movement of the pump piston (5) and, in a second operating mode, an overpressure in the container can be produced by an external pressure source, wherein the pump piston (5) has a connection (42) for the external pressure source for providing the overpressure, in particular for providing an overpressure which is constant over time during the actuation of the spray head (1).

Description

Atomizer and pumping device for such an atomizer

The present invention relates to an atomizer and a pumping device for such an atomizer.

Atomizers are well known in the art and are used in particular for the controlled release of a medium that is stored in a container of the atomizer. A special form of atomizer is, for example, the pressure pump atomizer, as described in DE 20 2013 102 734 U1 and DE 20 2018 107 060 U1. Here, an overpressure can be generated in a container using a pump piston and a pumping movement.

Another pressure pump atomizer is known from EP 0 482 561 B1. Here, the pump piston is provided with a handle element from which a connection nipple protrudes radially outwards. This connection nipple is intended to generate a one-time overpressure in the container using an external pressure source in order to detach the container from the external pressure source once the overpressure has been reached. After disconnecting from the external pressure source, a spray head can be activated, whereby a medium pressurized in the container is sprayed from the spray head.

Based on this, the present invention has for its object to provide an atomizer which is improved compared to the atomizers known from the prior art, in particular with regard to its handling and possible uses.

The present invention solves the problem with an atomizer according to claim 1 and a pumping device for such an atomizer according to claim 10. Further embodiments can be found in the dependent claims and the description.

According to a first aspect of the present invention, an atomizer, in particular a pressure pump atomizer, is provided with a spray head, a container and a pump device which comprises a pump piston, wherein the atomizer is designed such that a medium contained or stored in the container can be sprayed out via the spray head when the spray head is actuated, wherein the atomizer is further designed such that in a first operating mode an overpressure in the container can be realized by a pumping movement of the pump piston and in a second operating mode an overpressure in the container can be realized by an external pressure source, wherein the pump piston has a connection for the external pressure source for providing the overpressure, in particular for providing an overpressure that is constant over time during the actuation of the spray head.

In contrast to the atomizers known from the prior art, it is provided that a connection is formed which enables a permanent connection of an external pressure source to the atomizer. This advantageously makes it possible to keep the overpressure in the container constant even when a lever is operated which causes a spraying process on the spray head. This is not the case with atomizers in which the container is charged with overpressure via an external pressure source in order to then release it from the pressure source again before the spraying process takes place at the application site. It is preferably provided for this purpose that the connection is designed in such a way that it maintains a permanent connection to a line, which in turn is connected to the external pressure source, in particular independently. The line then connects the external pressure source to the atomizer. It is conceivable, for example, that the connection has a locking and/or snap mechanism which allows the line to be connected to the connection with a corresponding counter-connector by means of a simple pulling movement, preferably one-handed, in order to thus ensure a permanent connection of the line to the connection. In particular, it is intended that the connection is designed to detachably fix the line, so that at least temporarily it is possible to use the atomizer exclusively in the first operating mode if the line is detached from the connection, for example.

A further advantage of integrating the connection into the pump piston is the possibility of spatially separating the connection from the medium that is stored in the container, which in turn extends the service life of the connection. In addition, it has proven to be advantageous that the pump piston in the pump device can be rotated by 360° about a rotation axis that runs essentially parallel to the pumping direction of the pump device. This advantageously makes it possible for the line that is permanently connected to the connection to follow a movement or a relative orientation of the atomizer to the line or the pressure source, in particular without generating tension in the line.

The expert understands "permanent" to mean, particularly in connection with the subject matter of the present invention, a connection of the line that also extends over the actual pumping process or spraying process, i.e. lasts longer than the spraying process and contains the spraying process. The connection is therefore not limited to a one-time or short-term connection for charging the container in order to generate a corresponding overpressure.

In principle, it is also conceivable that the connection for the external pressure source can be used to easily and quickly fill the container with excess pressure. In this case, it can also be used independently of the line.

A further advantage of integrating the connection into the pump piston is the possibility of connecting the line to the pump piston in an extended state. to connect it. This simplifies the accessibility of the connection for the line and it is easy to provide an abutment on the pump piston (for example, by holding the pump piston with one hand and fixing the line to the connection with the other hand), which significantly improves the connection of the line to the pump piston. In particular, it is intended that the connection is designed in such a way that it is protected against accidental disconnection of the line, preferably by means of the locking or snap mechanism.

Preferably, it is a hand sprayer. In particular, the atomizer is a pressure pump atomizer in which a pressure is generated in a container of the atomizer by means of a pump piston. The container can be formed integrally with the spray head or preferably a separate component of the atomizer. This means in particular a pressure pump atomizer in which, in addition to an actuating mechanism of a valve device, a pump piston element or pump piston is also provided for operating the atomizer, which in the first operating mode generates a pressure in the container by an up and down movement or a back and forth movement, which in turn is required to allow the medium to leave via a fluid channel and an outlet of the atomizer, for example in the form of a desired spray cone. Preferably, these are pressure pump atomizers whose containers have a volume of less than 3 liters, so that the pressure pump atomizers can preferably be carried or operated with one hand. Volumes of more than 3 liters are also conceivable. For this purpose, such an atomizer comprises, for example, a handle into which, for example, a lever or a button for actuating a valve device is embedded, wherein the actuation of the lever or the button determines the point in time when the medium can pass through the valve device, in particular a valve opening of the valve device, in order to reach the outlet of the atomizer. Furthermore, it is preferably provided that a pressure of up to 6 bar is generated or prevails in the container. Furthermore, it is conceivable that the spray head sprays out the medium in the form of a spray cone or in the form of a foam via a corresponding outlet. According to a preferred embodiment of the present invention, it is provided that the pump piston has a handle area and the connection for the external pressure source is arranged below the handle area. In other words: the connection is arranged between an upper side of the spray head and the handle area. This improves the handling of the pump device in particular, since a connection otherwise integrated into the handle area would negatively influence the feel of the handle area and could possibly even encourage the user to slip when activating the pumping movement. The handle area is preferably knob-shaped and the connection protrudes from the pump piston in particular essentially perpendicular to the pumping direction. It is also conceivable that the connection runs obliquely to the pump piston or a longitudinal extension of the base body of the pump piston, in particular at an angle between 35° and 90°, particularly preferably between 65° and 90° and particularly preferably between 75° and 90°. The connection can be inclined in such a way that it faces towards the upper side of the spray head or faces away from it. In the case of an orientation of the connector facing away from the top of the spray head, easy access to a lever element or actuating means, such as the lever, in the handle is also permitted in cases where the connector is directed towards it.

Preferably, the pumping device has a pressure reducer, in particular a pressure halver, and/or a non-return valve. This advantageously makes it possible to reduce the pressure of the external source to an overpressure in the container that is desired in the container. The use of a pressure halver proves to be advantageous, particularly in the case of standard household connections, in order to reduce the typically provided 8 bar to the preferred 4 bar in the container.

Preferably, the connection comprises a device for a snap closure or locking closure. Such a snap closure allows the line to be easily connected to the pump piston, in particular by a simple movement with which the line or a corresponding counterpart on the line is pulled onto the appropriate connection. The snap or locking closure allows the line to be permanently fixed to the connection. The snap closure is preferably a quick-release connection or quick-fill adapter for blow guns. These can be pulled onto the connection with a movement that is preferably done with one hand. For example, a locking mechanism ensures that the line is permanently fixed to the connection.

Preferably, the pump piston is rotatable through 360° about a rotation axis that runs parallel to a pump device along which the pump piston is moved during the pumping movement. This advantageously makes it possible for the orientation of the connection to follow the relative movement of the atomizer to the external pressure source. This significantly simplifies the handling of the atomizer, particularly in a situation in which the atomizer remains connected to the external pressure source while the spray head is being actuated to spray the medium.

Preferably, the connection is replaceable. For this purpose, it is particularly provided that the pump piston has a receiving area into which the connection can be inserted in an exchangeable manner. For example, the connection can be inserted into or removed from the receiving area via a positive and/or frictional connection. For example, it is conceivable that the connection can be connected to the receiving area via a bayonet lock or mechanism. Alternatively, the connection could also be screwed in or unscrewed or fixed in the receiving area by means of another snap mechanism. This advantageously makes it possible to use different connections and in particular to adapt the connections to the line system to be connected or the external pressure source to be connected. It is also conceivable that the connection is an integral part of the atomizer. For example, the connection is permanently molded on. Preferably, the handle area includes a storage area in which the connector is stored. In particular, a cover element is provided in the handle area of the pump piston at the upper end of the pump piston, which can be opened to allow access to any connectors contained in the storage area. This allows different connectors to be carried with the atomizer to allow quick and situation-dependent switching between the connectors if necessary.

Preferably, it is provided that in a retracted state, the handle element has a first distance from the top of the spray head and the connection has a second distance from the top of the spray head, wherein a ratio of the second distance to the first distance has a value between 0.3 and 0.8, preferably between 0.4 and 0.7 and particularly preferably between 0.5 and 0.6. In other words: the connection is preferably located halfway up the area of the pump piston that protrudes from the top of the spray head in the retracted state.

Furthermore, it is provided that the pump piston has a thickening, whereby the thickening also serves in particular as a stop for the pump piston on the top of the spray head. As a result, the freedom of movement of the pump piston along the pumping direction is limited by the thickening and the part of the thickening that serves as a stop can absorb forces that occur when the pump piston hits the top of the spray head, thereby increasing the load-bearing capacity of the pump piston during the pumping movement.

Furthermore, it is preferably provided that a safety switch or lever is provided which must be moved before actuation or operation via the lever of the spray head is possible. This can ensure that the spray head is not accidentally actuated or remains actuable. Preferably, a closure element is provided for releasably closing a connection area for the connection. In this way, the connection area can be protected from external influences in situations in which no connection is inserted into the connection area.

Preferably, it is provided that the atomizer has a safety device which can be transferred between a release state and a safety state, and wherein the safety device in the safety state essentially prevents the pumping movement of the pump piston and in the release state allows the pumping movement for the first operating mode.

The safety device, which can be switched between a release state and a safety state, in particular can be switched reversibly, allows the pump piston to perform a pumping movement or to prevent the pumping movement. This is particularly advantageous because it can prevent the pump piston from extending in certain situations. This can be used, for example, as a child safety lock that prevents the pump piston from being extended unintentionally. The safety devices can be designed as desired and can be switched between the release state and the safety state, for example, via a translational and/or oscillating movement.

In particular, it is preferably provided that the safety device is designed in such a way that it can be transferred between the safety state and the release state via a defined movement. For example, it is conceivable that the defined movement provides for several changes in direction. Such a movement containing several movement components can prevent the transition between the release state and the safety state from occurring accidentally.

It is particularly preferred that in a second operating mode an overpressure in the container can be achieved by an external pressure source. In this embodiment, the use of a safety device proves to be particularly advantageous because the safety device prevents the pump piston from extending in the second operating state when the container is filled and pressurized by the external source. The safety device therefore also protects the user of the atomizer from the pump piston extending quickly and unexpectedly in the second operating mode.

It is particularly preferred that the securing device in the secured state interacts with the pump piston in a form-fitting manner along a direction running parallel to the pumping direction. For this purpose, the pump piston has, in particular in a primary region, for example a collar element which interacts with the securing device in a form-fitting manner in the secured state, in particular in that the securing device overlaps the collar element at least in sections or surrounds it on at least two sides. This advantageously forms the preferred form-fitting arrangement which prevents the pump rod or the pump piston from carrying out the pumping movement.

Preferably, it is provided that the securing device, in the securing state, interacts in a form-fitting manner along a direction running parallel to the longitudinal direction of the pump piston with the pump piston, in particular with a collar element projecting radially from the pump piston.

Preferably, the securing device is designed in such a way that rotation of the pump piston around its longitudinal axis is permitted or possible in the secured state. This advantageously makes it possible to maintain the advantages of a 360° rotation of the pump piston even when the securing device prevents a pumping movement of the pump piston. For this purpose, for example, a collar element is provided which surrounds the primary area or the pump piston to a large extent, i.e. more than 60%, so that the positive connection between the securing device and the pump piston is prevented from being canceled when the pump piston rotates. Instead, the positive connection is independent of the degree of rotation. of the pump piston. In particular, the pump piston and/or the safety device are designed such that the pump piston can be rotated through 360° when the safety device is in the safety state.

It is preferably provided that the securing device comprises a slotted guide and/or a snap element. The slotted guide is in particular provided to accommodate a pin or a preferably pin-like projection on the base body of the spray head. This makes it possible, when the securing device is transferred from the release state to the secured state, to guide the projection within the slotted guide, in particular to guide it into an area of the slotted guide that fixes the securing device to the base body of the spray head. The snap element preferably forms at least one snap connection, preferably at least two snap connections, with a complementarily designed partial area. In particular, the complementary partial area is designed as an undercut, in particular as a groove. A strip-shaped groove is preferably advantageous for the force distribution.

For this purpose, it is particularly provided that, in the assembled state of the safety device, the slotted guide has a curved or wave-like or recessed course on the side facing the bottom of the container. By transferring the projection into the partial area that is to be assigned to a wave trough in the slotted guide and by applying pressure within the container, it is prevented that the safety device can move out of the secured state unintentionally by a corresponding translational movement. In this case, it proves to be particularly advantageous that in the second operating state, during the pressurization by the external source, the container is filled with gas in such a way that the pump piston strikes the underside of the safety device. This lifting movement presses the pin or projection on the spray head into a valley area of the slotted guide. As a result, the projection cannot leave the slotted guide again in this state. As a result, This prevents the safety device from being accidentally released and the pump piston from flying out, especially when pressure is applied. This advantageously prevents any injuries.

In other words: the release of the safety device is preferably only permitted if the pressure inside the container is below a threshold value and a corresponding amount of force is applied by the user to transfer it to the release state. In particular, it is provided that in the second operating mode, the safety state requires a force of greater than 20 N, greater than 30 N and particularly preferably greater than 50 N to transfer the safety device from the safety state to the release state, so that accidental displacement of the safety device by manual actuation is almost impossible when the atomizer is in the second operating state.

Furthermore, it is preferably provided that the safety device is replaceable, in particular detachable from the spray head. The person skilled in the art will preferably understand that the safety device can be removed or separated from the spray head without causing any damage and in particular without any additional aids/tools. For example, the safety device can be pulled onto the spray head, in particular over a section that includes a fluid channel that guides the medium to be sprayed to the outlet of a nozzle element.

For example, the securing device is designed as a sleeve-like body that has a shell surface and a cover element. The cover element and the shell surface are open on one side to accommodate a portion of the spray head. Preferably, the shell surface, in particular a cylindrical shell surface, comprises a preferably circular opening through which a portion of the spray head, in particular the portion with the fluid channel, passes in the assembled state. The cover element is designed in particular to interact with the pump piston in a form-fitting manner in the secured state. On the side opposite the cover element the securing device is preferably open, ie free of components. In the secured state, the outer surface surrounds the pump piston and is arranged in particular concentrically to the pump piston. In particular, the cover element has a receiving area which surrounds a rod-shaped part of the pump piston, preferably more than 50%, particularly preferably more than 60% and particularly preferably more than 70%. The receiving area of the cover element is preferably claw-shaped.

The slotted guide has an opening that is formed on the open side of the securing device. Preferably, the slotted guide is arranged adjacent to the cover element and/or in an upper half or an upper third as viewed from the cover element.

Preferably, the pump piston has a primary region and a secondary region, the secondary region being designed as a piston rod. A washer element is preferably formed between the piston rod and the primary region. This washer serves in particular to distribute the force when the piston rod is inserted or pressed into the primary region. It is also conceivable that the piston rod is overmolded to form the primary region in order to shape the piston rod and the primary region.

Preferably, the primary area and the secondary area are made of different materials. It is particularly preferred that the primary area is made of a plastic. This makes it possible, particularly with a suitable choice of material for the piston rod, to extend the service life of the atomizer by adapting the material to the contents of the container. For example, the piston rod is mounted on the primary area in an interchangeable manner.

Preferably, it is provided that a movement that transfers the safety device from the safety state to the release state is limited, in particular to two sides. This prevents the safety device from becoming detached from the atomizer, for example, when the safety device is transferred to the release state. For example, it is conceivable that the safety device strikes a nozzle element or attachment that is screwed onto the spray head. This makes it advantageously possible, for example by removing the nozzle attachment, to pull the safety device off the spray head and in particular to replace it if necessary. This can be used, for example, to use different safety devices that are adapted, for example, to the respective pressure that is provided in the container.

Preferably, the safety device is made of metal and/or plastic. This can preferably be a closed body and/or a bracket-like component that can be transferred between the safety state and the release state, for example, via a pivoting movement. It is also conceivable that the safety device has means that make it easier to grip. For example, it is conceivable that the safety device has elevations or outer contours that are aligned essentially perpendicular to a translational movement, via which the safety device can in turn be transferred between the release state and the safety state. This allows the user to grasp the safety device as comfortably as possible and to transfer it between the safety state and the release state.

Preferably, the security device is provided with a code. This code can be formed, for example, by the respective color of the security device or by a corresponding visual marking on the outside of the security device. By designing the security device in an interchangeable manner, it is then possible to adapt the security device to the contents stored in the container and to make the user visually aware of what contents are stored in the container. For example, it is also conceivable that a lettering area is provided in the security device, to which either lettering can be applied and/or an adhesive strip that informs the user about the contents of the container. Furthermore, it is preferably provided that the piston rod or the pump piston has a connection that is accommodated in a receiving area. An adapter element is preferably integrated between the receiving area and the connection. The adapter element is preferably made of metal and embedded in the receiving area made of plastic, for example via a corresponding fine thread that is created, for example, during production by screwing the adapter element into the receiving area. The metallic shape advantageously makes it possible to provide an interface that is as resilient and long-lasting as possible and into which a corresponding connection, in particular different connections, can be accommodated. For example, the connections are so-called Schrader valves and/or car valves and/or a quick connection element.

A further subject of the present invention is a pumping device for an atomizer according to the invention. All features and advantages described for the atomizer can be transferred analogously to the pumping device.

A further subject of the present invention is the use of an atomizer according to the invention, wherein it is particularly provided that a connection to the external pressure source via the connection is maintained even during a spraying process of the atomizer. In particular, it is provided that the atomizer is used in such a way that the overpressure in the container remains constant during the actuation of the spray head device or the spray head in order to spray the medium from the spray head. All features and advantages described for the atomizer can be transferred analogously to the use of the atomizer and vice versa.

Further advantages and features emerge from the following description of preferred embodiments of the subject matter according to the invention with reference to the attached figures. Individual features of the individual embodiments can be combined with one another within the scope of the invention. It shows:

Fig. 1 a pressure pump atomizer according to the prior art,

Fig. 2 a pressure pump atomizer according to a first exemplary

Embodiment of the present invention and

Fig. 3 the pressure pump atomizer from Figure 2 in a different state

Fig. 4 shows a pressure pump atomizer with a safety device according to a preferred embodiment of the present invention in a side view,

Fig. 5 a side view and a sectional view through spray head with

Safety device according to the preferred embodiment of the present invention,

Fig. 6 is an exploded view of the spray head and safety device according to the preferred embodiment of the present invention,

Fig. 7 the pressure pump atomizer with a safety device according to the preferred embodiment of the present invention in a perspective view,

Fig. 8 Sectional views of pump pistons in detail

Fig. 9 further sectional view of the pump piston,

Fig. 10 the pressure pump atomizer with a safety device according to another preferred embodiment of the present invention in a perspective view in the safety state, Fig. 11 the pressure pump atomizer with a safety device according to another preferred embodiment of the present invention in a perspective view in the release state and

Fig. 12 Safety device from Figures 10 and 11 from different perspective views.

Fig. 13 sectional views of a pump piston in another embodiment according to the present invention in detail and

Fig. 14 further securing device according to another preferred embodiment of the present invention.

Figure 1 shows a pressure pump atomizer 100 according to the prior art. Such pressure pump atomizers 100 are used for the controlled distribution of a medium that is stored in the pressure pump atomizer 100. The medium stored in the pressure pump atomizer 100 is sprayed out when required. In particular, such a pressure pump atomizer 100 comprises a container 2 in which the medium is stored and a spray head 1, which ensures that the medium is guided from the container 2 to an outlet 25 of the pressure pump atomizer 100. Here, the medium leaves the pressure pump atomizer 100 at the outlet 25, for example in the form of a spray cone or as foam. To influence the shape of the spray cone and/or the foam, a nozzle attachment 10 is conceivable, for example, which can be mounted interchangeably on the spray head 1, preferably via a nozzle thread.

The example shown in Figure 1 is in particular a pressure pump atomizer 100, in which it is provided that a pressure or an overpressure is generated in the container 2 by means of a pump device 40. The pump device 40 comprises a pump piston 5, which is actuated by an up and Downward movement can generate pressure in the container 2. The pump piston 5 preferably has a knob-like grip area 50 at its upper end. A hose (not shown) protruding into or immersed in the medium guides the medium to the spray head 1. Inside the spray head 1, the medium is guided via a fluid channel to the outlet 25 of the pressure pump atomizer 100. Furthermore, it is provided that a handle 7 is formed on the spray head 1, by which a user or user of the pressure pump atomizer 100 holds the pressure pump atomizer 100. In particular, it is a pressure pump atomizer 100 whose volume of the container 2 is less than 3 liters, preferably less than 2.5 liters and particularly preferably less than 1.9 liters and relates, for example, to atomizers that can be carried with one hand.

By means of a lever 9, in particular a lever 9 embedded in the handle 7, it is advantageously possible to determine the time at which the medium is sprayed out of the outlet 25. To operate the pressure pump atomizer 100, it is provided that a pressure is first generated in the container 2 by means of the pump piston 5 and after the generation of such a pressure, which is caused for example by means of a repeated up and down movement of the pump piston 5, the spray head 1, when the lever 9 is actuated, causes the medium to be guided from the container 2 to the outlet 25 via a fluid channel in the spray head 1.

Furthermore, it is preferably provided that the pressure pump atomizer 100 has a base element 8, for example in the form of a ring element. Such a base element 8 is made, for example, from a rubber-like material and serves in particular to increase the stability of the pressure pump atomizer 100.

Figures 2 and 3 show a pressure pump atomizer 100 according to a first exemplary embodiment of the present invention. The pressure pump atomizer 100 from the exemplary embodiments 2 and 3 differs from the exemplary embodiment from the prior art according to Figure 1 in that proceeding from the fact that the exemplary embodiment of the present invention according to Figures 2 and 3, in addition to a first operating mode in which the overpressure in the container 2 is generated manually by a pumping movement along a pumping direction P, enables a second operating mode in which the overpressure in the container 2 is provided via an external pressure source. The pumping movement in the first operating mode corresponds in particular to an up and down movement of the pump piston 5 along the pumping direction P. For the second operating mode, a connection 42 is provided in the atomizer 100 of Figures 2 and 3, which is integrated into the pump device 40, in particular into the pump piston 5. Compressed air or compressed gas can be fed into the container 2 via a channel running through the pump piston 5. In the exemplary embodiment shown in Figures 2 and 3, it is further preferably provided that the connection 42 is arranged below a handle area 50 of the pump piston 5. The connection 42 protrudes essentially perpendicularly from the pump piston 5. In the state shown in Figure 2, the pump piston 5 is retracted, while Figure 3 illustrates a state in which the pump piston 5 is extended. Furthermore, it is particularly preferably provided that the pump piston 5 has a receiving area 41, which is in particular formed integrally with the rod-shaped base body of the pump piston 5 and preferably protrudes perpendicularly from the general course of the base body of the pump piston 5. It is preferably provided that the connection 42 can be mounted in the receiving area 41 in an exchangeable manner. For this purpose, the connection 42 is, for example, detachably inserted or insertable into the receiving area 41.

The integration of the connection 42 into the pump piston 5 proves to be particularly advantageous because the pump piston 5 is mounted in the pump device 40 in such a way that it can be rotated by 360° about a rotation axis R that runs parallel to the pumping direction P. The rotatable mounting allows the connection 42 to follow any orientation of the line that is used to feed a gas into the container 2. This allows the atomizer 100 to be handled comparatively easily when a line is permanently connected to the connection 42. Furthermore, it is provided that the connection 42 is designed to create a snap connection with a line to be connected. In particular, it is provided that corresponding contours are formed on the connection 42 which enable a locking or snap connection, i.e. trigger a locking or snap mechanism when a line or the gas line from the external gas source is pulled or plugged onto the connection 42. In particular, the line and connection 42 form a positive connection in the connected state through the locking mechanism. This allows the line to be mounted quickly and in particular permanently on the pump piston 5, in particular on the connection 42. Furthermore, it is particularly preferably provided that the connection 42 can be mounted interchangeably in the receiving area 41. This allows the appropriate connection 42 to be used for the line to be connected, for example by changing the connection 42 accordingly. To store the connections 42, it is conceivable that a storage area is provided in the handle area 50 at the upper end of the pump piston 5. For example, the pump piston has a cover element 51 on the front side in the handle area 50, which can be opened to open or close the storage area. Various connections 42 or a replacement connection can then be stored in this storage area.

Furthermore, it is particularly preferred that the connection 42 is designed for a permanent connection to the line to be connected. This means that the connection between the line and the connection 42 is maintained without any additional components or elements, such as a clamp or the like, in particular even when spraying is initiated via the lever 9 on the handle 7 of the spray head 1.

In particular, it is provided that the line or the external pressure source remains connected to the connection 42 via the line, so that the pressure in the container 2 maintains a constant pressure value even during the actuation of the lever 9. This is not the case, for example, if the pumping movement in the first operating mode generates an overpressure in the container 2, which is then reduced again by the actuation of the lever 9. In the second operating mode, it is It is therefore possible to set up continuous operation in which the medium can be sprayed out over a certain period of time, for example more than 30 seconds, with a stationary or constant overpressure in the container 2. In particular, the atomizer 100 is designed to permanently maintain the connection to the external pressure source, in contrast to embodiments from the prior art in which, for example, pressure is generated in the container by means of an external pressure source and the atomizer 100 is then released from the external pressure source in order to finally actuate the lever 9 at the place of use or application, whereby the pressure or overpressure in the container 2 would be reduced. Furthermore, it is provided that in a retracted state of the pump piston 5, as shown for example in Figure 2, the pump piston 5 has a first distance A1 between an upper side of the handle region 50 and an upper side of the spray head 1, while a second distance A2 measures the distance between the connection 42 and the upper side of the spray head 1, measured along a direction running parallel to the pumping direction P.

Preferably, it is provided that a ratio of the second distance A2 to the first distance A1 has a value between 0.3 and 0.8, preferably between 0.4 and 0.7 and particularly preferably between 0.5 and 0.6. In other words: in the retracted state, the connection 42 is located essentially halfway up the upper end of the pump piston 5 protruding from the spray head 1.

Furthermore, it is particularly preferred that the pump piston 5 has a structured thickening, particularly in the area of the connection 42. In the embodiment shown in Figure 2 and Figure 3, the thickening is designed in such a way that, viewed in the pumping direction P, it initially tapers and then widens again. The thickening serves as a stop for the pump piston 5 on the spray head 1 during the pumping movement. The structured thickening allows the forces occurring during the stop to be distributed as effectively as possible. This has a positive effect on the service life of the pump device 40. Figure 3 shows the pressure pump atomizer 100 from Figure 2 in an extended state. In the extended state, it is particularly advantageous to connect the line to be connected to the connection 42, since in the extended state the accessibility of the connection 42 is increased. It is also advantageous to connect the line when the pump piston 5 is extended, since this allows a corresponding counterpressure to be provided when fixing, in particular when using the snap connection on the connection 42. This is possible by integrating the connection 42 into the pump piston 5. A further advantage of arranging the connection 42 on the pump piston 5 is the spatial separation of the connection 42 from the container 2, which can avoid interaction with an aggressive medium that is stored in the container. This can extend the service life of the connection 42.

Furthermore, it is provided that a pressure reducer is integrated into the pump device 40, in particular to adapt a pressure provided by the external source to the desired overpressure in the container 2. This is preferably a pressure halver, in particular to reduce the pressure of house connections to the desired overpressure in the container 2.

Furthermore, it is provided that the atomizer 100 from Figures 2 and 3 has a switch 13, which must be turned over or moved, for example, before the lever 9 can be moved to trigger the spraying process. Preferably, the switch 13 automatically returns to a locking position after the lever 9 has been actuated. This can ensure that the lever 9 is not accidentally actuated. Alternatively or additionally, the switch can also be provided to cause the lever 9 to be actuated continuously. In other words, the switch 13 holds the lever in an actuated position in which the lever is actuated continuously when actuated. In this state, the medium leaves the nozzle until further notice. Figure 4 shows an exemplary embodiment of an atomizer 100 according to the present invention. Essentially, this exemplary embodiment of Figure 4 has a pump device 40, as described by way of example in Figures 2 and 3. In addition to a pump piston 5, the pump device 40 therefore comprises an additional connection 42 via which an external pressure source can be connected. In order to prevent the pump piston 5 from being inadvertently extended by the external pressure source during the pressurization, the atomizer 100 provides a safety device 60. This safety device 60 can be transferred between a release state and a safety state.

In the release state, the safety device 60 allows the pumping movement of the pump piston 5, while the movement of the pump piston 5 to carry out the pumping movement is prevented when the safety device 60 is in the safety state. In other words: only in the release state is it possible to build up pressure inside the container 2 by means of a pumping movement. This prevents the pump piston 5 from being extended if, for example, the container 2 is pressurized by an external pressure source via the connection 42. This in turn proves to be advantageous because it fixes the pump piston 5 in the retracted state, while the pressurization takes place by the external pressure source in the second operating mode. In addition, it is advantageous that the safety device 60, in the sense of a child safety lock, prevents an unwanted pumping movement from being carried out. In particular, it is provided that the safety state of the device is assumed when the atomizer 100 is in a second operating mode, i.e. is pressurized by the external pressure source.

In the example shown in Figure 4, the safety device 60 is formed by a sleeve-like or sleeve-like safety device 60 which can be moved by a translational movement along a direction perpendicular to the axis of rotation R of the pump piston 5 in order to be transferred between the release state and the safety state. Alternatively For example, it is also conceivable that the securing device 60 can be transferred between the release state and the securing state by a pivoting and/or translational movement. In the embodiment shown in Figure 4, it is preferably provided that the securing device 60 in the securing state interacts in a form-fitting manner with the pump piston 5, in particular with a collar element 55 of the pump piston 5 that protrudes perpendicularly from the pump piston 5. In the securing state, an upper side of the securing device 60 overlaps or encloses the collar element 55 at least in sections in order to thereby interact in a form-fitting manner with the pump piston 5 along a direction running parallel to the axis of rotation R. In particular, it is provided that the securing device 60 has a recess in its outer surface in order to be able to be slipped over the spray head 1, for example. This advantageously allows the securing device 60 to be attached to the atomizer 100 in an interchangeable manner.

The interchangeability allows, for example, the safety device 60 to be provided with a code so that, in addition to the security effect, the safety device can be given the functionality of informing the user about which liquid is arranged in the container 2. Interchangeability is to be understood in particular as meaning that the safety device 60 can be completely detached from the atomizer and can be replaced, for example, by an analogously designed safety device 60.

For example, the coding may be different colors and/or other markings that visually indicate that a particular medium is stored in container 2.

Furthermore, it is provided that the safety device 60 is designed to withstand a pressure of more than 3 bar or 5 bar and particularly preferably more than 7 bar. For this purpose, it is particularly advantageous if the safety device 50 is solidly formed and the collar element 55 of the pump piston 5 to more than 50% or more than 70% and particularly preferably more than 85%, in order to ensure the most uniform possible effect with regard to the form fit.

Furthermore, it is preferably provided that the securing device 60 has a slotted guide 61, into which a correspondingly protruding projection 62, in particular a pin-like projection 62, of the spray head 1 can engage and is guided in particular during the transfer between the secured state and the released state. In particular, it is provided that the securing device 60 is fixed to the spray head 1 by a corresponding wave-like course on the underside of the slotted guide 61, which in particular prevents the securing device 60 from being released from its secured state, for example when the entire atomizer 100 is pivoted or rotated, and from being inadvertently transferred to the released state. Instead, the interaction of the projection 62 and the slotted guide 61 jams the securing device 60 in its secured state, in particular in the second operating state.

In Figure 5, the spray head 1 is shown on the left-hand side, while a sectional view through the spray head 1 is illustrated on the right-hand side. The pump piston 5 has in particular a primary section 52 which, when the pump piston 5 is retracted, is formed essentially on the outside of the atomizer 100. The secondary region 53 is preferably formed by a piston rod which, when retracted, is arranged inside the atomizer 100 and cannot be seen from the outside. The piston rod is particularly visible when extended. It is preferably provided that the primary section 52 of the pump piston 5 is formed from a plastic, in particular an injection-molded plastic, while the piston rod, for example, is formed from plastic, for example a plastic that is different from the plastic of the primary section, and/or a metal. The choice of material for the piston rod can preferably be adapted to the medium that is stored in the container 2 in order to prevent damage to the piston rod. This extends the service life of the atomizer 100. Furthermore, it is preferably provided that the piston rod is a hollow rod or a hollow body in order to introduce the compressed air introduced via the connection 42 in the second operating state into the container 2.

In Figure 6, the spray head 1 is visualized in an exploded view. In particular, the exploded view shows the pump piston 5 in an extended state. To mount the securing device 60, the securing device 60, in particular the sleeve-like securing device 60 from the embodiment of Figures 4, 5 and 6, is pulled or slipped over a thread 18, the thread 18 being designed for mounting the nozzle attachment 10.

This makes it possible to limit the translational movement of the safety device 60 in the release state on both sides, since movement in the radial direction is limited by a stop on the back of the nozzle attachment 10 for the safety device 60. To replace the safety device 60, for example for a safety device 60 with a different coding, it is therefore preferably provided that the nozzle attachment 10 is dismantled in a first step in order to then remove the safety device 60 in a second step.

Figure 7 shows a perspective view of the exemplary embodiment of the atomizer 100. In the exemplary embodiment shown, the safety device 60 is designed in such a way that in the safety state the pump piston 5 is prevented from moving along the pumping direction P, but rotation about the rotation axis R is permitted. This also advantageously makes it possible to rotate the pump piston 5 in the second operating mode, ie when the container 2 is pressurized with gas or pressure via an external pressure source. This simplifies the handling of the atomizer 100, in particular when a permanent connection to an external pressure source is provided during operation. Finally, this allows a free Rotation or rotary movement of the pump piston 5 is possible when the atomizer 100 is aligned as desired by a user. For this purpose, it proves to be particularly advantageous that a cover section 63 formed on the top or a cover element of the securing device interacts with the circumferential collar element 55 of the pump piston 5. In particular, it is provided that the collar element 55 surrounds the piston rod or the rod-shaped section of the piston rod by more than 75% in order to ensure that despite a rotation of the pump piston rod 5 or the pump piston 5, the positive connection in the securing state is not canceled when the pump piston 5 is rotated, in particular by 360 ° about the rotation axis R.

Figure 8 shows two exemplary embodiments for the connection between the secondary region 53 and the primary region 52 in the pump piston 5. This is particularly true when the secondary region 53 is made of a different material than the primary region 52, in particular when the pump piston 5 is formed in at least two parts. In this case, the secondary region 53 is preferably made of metal, while the primary region 52 is made of plastic. The connection between the primary region 52 and the secondary region 53 is preferably made via a thread. In order to avoid cutting, a washer of the primary region 52 is preferably provided. Alternatively, it is conceivable that a sealing ring is arranged on the upper side of the secondary region 53, in particular on its front side, in order to ensure an appropriate seal here.

In Figure 9, the primary area 52 of the pump piston 5 is shown in detail. In particular, the illustration also includes the receiving area 41 with the connection 42. Furthermore, in the embodiment shown here, an adapter element 46 is provided between the connection 42 and the receiving area 41. The adapter element 46 is preferably designed in such a way that it allows the connection of various connection elements or connections 42, in particular connection valves. This advantageously makes it possible to connect the connections 42 as required and without major assembly work. It is preferably provided that the adapter element 46 is made of metal and is inserted in the receiving area 41 in particular via a fine thread. This advantageously provides a metal thread insert without the entire grip area 50 or primary area 51 of the pump piston 5 having to be made of metal.

Figure 10 shows a pressure pump atomizer 100 with a securing device 60 according to a further preferred embodiment of the present invention in a perspective view in the secured state. The embodiment from Figure 10 differs essentially from the previous embodiment in that the securing device 60 has a snap element for securing the release state and the secured state. For this purpose, the securing device 60 has at least one further projection 63 projecting inwards, which engages in a corresponding undercut 67 in the nozzle attachment. This further projection 63 is essentially strip-shaped and particularly preferably extends essentially along a direction that runs parallel to the pumping direction. The further projection 63 snaps into the undercut 67. The spray head 10 preferably comprises at least two undercuts 67 that run parallel to one another and are offset from one another. This advantageously makes it possible for the undercuts 67, which are preferably designed in the form of a groove, to be assigned to the release state and the securing state. The undercuts 67 preferably secure the securing device 60 in two opposite directions for both the release state and the securing state and can only leave this state by applying a force above a specified threshold. This advantageously ensures that in both states the securing device 10 is not arranged loosely on the pressure pump atomizer 100 and cannot inadvertently impair the movement of the pump piston 5 depending on a movement of the pressure pump atomizer 100. Preferably, the undercut 67 and the further projection 63 create a snap connection which, in the locking state and/or in the release state, interact with one another in a form-fitting manner along a direction running perpendicular to the pumping direction P.

Furthermore, in the embodiments of Figures 10 to 12, it is provided that the slotted guide 61 is additionally provided, which serves to guide or support the movement of the securing device 60 between the release state and the securing state.

In Figure 11, the safety device 60 is provided in the safety state. Here, a rail-like projection on the spray head 1 is accommodated in the guide rail 61.

Figure 12 shows the securing device 60 in various perspective views. In particular, it is provided that the inwardly projecting further projection 63, which acts as a snap element, is formed at the end of an otherwise continuous side wall of the securing device 60. The further projection 63 preferably forms part of a partial segment of the securing device 60, which surrounds the pump piston in the assembled state. A free area in this otherwise closed side wall segment is preferably arranged facing the lever 9 or opposite the nozzle attachment 10. The arrangement of the inwardly projecting further projection, in particular the projection protruding inwards from the inside of the side wall, proves to be particularly advantageous for the snap effect and, for example, simplifies releasing the securing device 60 from the secured state. Preferably, two further projections 63 delimiting the free area are provided, which are preferably intended to be pressed apart with both thumbs of a user in order to leave the secured state. This reduces the likelihood of accidental release of the safety device 60. Figure 13 shows a further embodiment of the connection between the secondary region 53 and the primary region 52 in the pump piston 5. This embodiment essentially corresponds to those shown in Figure 8, in particular with regard to the material combination. The connection between the primary region 52 and the secondary region 53 is preferably made via a thread. In this embodiment, it is preferably provided that the secondary region 52 engages in the primary region 53. In the assembled state, an end face facing the primary region 53 is spaced from a stop surface in the primary region 53. A gap is thus formed in the thread-free region between the primary region 52 and the secondary region 53. Furthermore, it is particularly preferred if the thread is dimensioned in such a way that a preload is formed, in particular if the thread is combined with a sealing ring. It is also conceivable that the thread has an oversize, so that when the primary region 52 and the secondary region 53 are joined together, a thread forms, in particular cuts into, the screwed-in component, preferably the primary region 52.

Figure 14 shows a further securing device 60 in various perspective views. The securing device 60 essentially corresponds to the one shown in Figure 12. In addition, the securing device 60 is characterized in that at least one locking rib, preferably at least two locking ribs on opposite sides, are arranged on its inside. The locking rib preferably comprises at least two elevations, between which a locking position is provided, into which a corresponding projection on the spray head 1 engages in the secured state. This ensures fixation in the secured state 60 and a transfer to the released state is preferably possible. In addition, the securing device 60 preferably has clip-like side surfaces or wings, which act in a clamping manner on the spray head 1 in the secured state. These side surfaces or wings are preferably flat. Reference symbol:

1 spray head

2 containers

5 pump pistons

7 Handle

8 Floor element

9 levers

10 Nozzle attachment

13 switches

18 threads

25 Output

40 Pumping device

41 Recording area

42 Connection

44 Storage area

50 Grip area

51 Lid element

52 Primary area

53 Secondary area/piston rod

55 Collar element

60 Safety device

61 Slide guide

62 Lead

63 further lead

67 Undercut

71 Washer

100 pressure pump atomizers

P Pump direction

R rotation axis

A1 first distance

A2 second distance

Claims

Expectations 1. Atomizer (100), in particular a pressure pump atomizer, with a spray head (1), a container (2) and a pump device (40) which comprises a pump piston (5), wherein the atomizer (100) is designed such that a medium contained in the container (2) can be sprayed out via the spray head (1) when the spray head (1) is actuated, wherein the atomizer (100) is designed such that in a first operating mode an overpressure in the container (2) can be realized by a pumping movement of the pump piston (5) and in a second operating mode an overpressure in the container can be realized by an external pressure source, wherein the pump piston (5) has a connection (42) for the external pressure source for providing the overpressure, in particular for providing an overpressure that is constant over time during the actuation of the spray head (1). 2. Nebulizer (100) according to claim 1, wherein the pump piston (5) has a handle area (50) and the connection (42) for the external pressure source is arranged below the handle area (50). 3. Atomizer (100) according to one of the preceding claims, wherein the pumping device (40) has a pressure reducer and/or a check valve. 4. The atomizer (100) of any preceding claim, wherein the connector (42) includes a snap-fit device. 5. Atomizer (100) according to one of the preceding claims, wherein the pump piston (5) is rotatable by 360° about a rotation axis (R) which runs parallel to a pumping direction (P) along which the pump piston (5) is moved during the pumping movement. 6. Atomizer (100) according to one of the preceding claims, wherein the connector (42) is replaceable. 7. Atomizer (100) according to one of the preceding claims, wherein the handle area (50) comprises a storage area in which the connector (42) can be stored. 8. Atomizer (100) according to one of the preceding claims, wherein the pump device (40) has a closure element for releasably closing a connection area for the connection (42). 9. Atomizer (100) according to one of the preceding claims, wherein the atomizer (100) has a safety device (60) which can be transferred between a release state and a safety state, and wherein the safety device (60) in the safety state substantially prevents the pumping movement of the pump piston (5) and in the release state allows the pumping movement for the first operating mode. 10. Atomizer (100) according to claim 9, wherein the securing device (60) is designed such that in the secured state a rotation of the pump piston (5) about its longitudinal axis is permitted. 11. Atomizer (100) according to claim 9 or 10, wherein the securing device (60) is designed as a sleeve-like body. 12. Atomizer (100) according to one of claims 9 to 11, wherein the securing device (60) is replaceable, in particular detachable from the spray head. 13. Atomizer (100) according to one of the preceding claims, wherein the pump piston (5) has a primary region (52) and a secondary region (53), wherein the secondary region (53) is designed as a piston rod (5), wherein the primary region (52) and the secondary region (53) are made of different materials. 14. Atomizer (100) according to one of the preceding claims, wherein the piston rod or the pump piston (5) has a connection (42) which is received in a receiving area (44), wherein an adapter element is preferably integrated between the receiving area (44) and the connection (42). 15. Pump device (40) for an atomizer (100) according to one of the preceding claims.