Device for dispensing and / or diffusing substances, especially for dispensing and / or diffusing fragrances and / or active substances in air care and / or pest control, delivery device, and method for operating a device
The device addresses inefficient substance distribution by integrating a heating and air flow system, ensuring effective and consistent diffusion in larger spaces with a modular design for easy maintenance.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- ZHONGSHAN CTR HOUSEHOLD TECHNOLOGY LTD
- Filing Date
- 2024-11-11
- Publication Date
- 2026-05-15
AI Technical Summary
Existing devices for dispensing volatile substances face issues with inefficient air flow and substance distribution, leading to undesired deposits and uneven diffusion, especially in larger spaces.
A device with a housing that includes a clean air flow inlet, substance-laden air flow outlet, and an air flow channel, combined with an electrical heating device and an air flow generating device, allowing for controlled and efficient substance release into the environment.
Ensures effective and consistent substance diffusion, adaptable to various room sizes, with modular design for easy assembly and maintenance, enhancing control over substance release and distribution.
Smart Images

Figure CN2024131220_15052026_PF_FP_ABST
Abstract
Description
Device for dispensing and / or diffusing substances, especially for dispensing and / or diffusing fragrances and / or active substances in air care and / or pest control, delivery device, and method for operating a device
[0001] The invention relates to a device for dispensing and / or diffusing substances, in particular for dispensing and / or diffusing fragrances and / or active substances in air care and / or pest control, a delivery device, and a method for operating a device.
[0002] Devices for dispensing volatile substances are well known and usually comprise a container in which a substance to be dispensed is contained. For example, the container contains a capillary wick which protrudes above the container with a free end of the wick and which is in contact with the substance to be dispensed in such a way that the substance is conveyed to the free end of the wick by the capillary action of the wick. An electrical heating element is regularly assigned to the free end of the wick, by means of which heat can be applied to the free end of the wick in order to be able to release the substance accumulating in the free end of the wick into the environment or evaporate it even faster. Such a structure is known from WO 98 / 58692 A1, for example. In order to be able to adjust the degree of evaporation and thus the evaporation capacity, said WO 98 / 58692 A1 also provides for the container and wick to be stored in the housing of the device in such a height-adjustable manner that the relative position of the wick to the heating device can be changed.
[0003] With such a design, the evaporation rate and thus the release rate of the substance to be released can be influenced over a longer period of time. However, there is the problem that the air flow generated and enriched with the substance to be dispensed, which escapes into the environment via an outlet opening in the housing wall, cannot flow out of the housing fast enough and is influenced, for example, by air turbulence arising within the housing, so that undesirable deposits and condensation of the substance to be dispensed on the inner walls of the housing occur to a certain extent. Furthermore, with such devices, especially if they are arranged close to a wall, there is a risk that the outflowing substance air flow will change into the desired unstable convection state just above the device. In a relatively low room, e.g. a device mounted on a wall near a socket, this often leads to an insufficiently effective distribution of the substance to be emitted in the room or to undesired deposits of the substance to be emitted on the wall.
[0004] Accordingly, it is an object of the present invention to create a device for the dispensing and / or diffusing, in particular for the evaporation, of substances, by means of which an effective outflow of a substance-laden air flow can be ensured or a sufficient distribution of the substance to be delivered in the room can be achieved.
[0005] This object is solved with the features of independent claim 1. Advantageous embodiments are subject of the dependent claims referring to it.
[0006] The invention relates to a device for dispensing and / or diffusing substances, in particular for dispensing and / or diffusing fragrances and / or active substances in air care and / or pest control, comprising a housing. The housing comprises:
[0007] - an interior space being configured to receive or form a storage section that is configured to accommodate a dispensable and / or diffusible substance, preferably a liquid substance,
[0008] - a delivery device that is in fluid communication with a dispensable and / or diffusible substance in the storage section and comprises at least one substance-discharging area, which is associated with a release section of the interior space,
[0009] - at least one electrical heating device that is configured to generate heat that supports the release of the substance into the release section,
[0010] - at least one clean air flow inlet and at least one substance-laden air flow outlet, which are fluidly connected within the housing by at least one air flow channel formed within or by the housing, wherein the at least one air flow channel at least partially extends in the area of the release section,
[0011] - a control device, which is configured to supply the at least one electrical heating device with electrical energy, for example from an external and / or internal energy source, such that a clean air flow, which enters the interior space of the housing through the at least one clean air flow inlet, is loadable with substance in the release section of the housing and is discharged as a substance-laden air flow through the at least one substance-laden air flow outlet from the interior space of the housing into the surrounding environment.
[0012] This provides for a versatile device, especially for air care and / or pest control applications, with a housing that accommodates and releases substances, such as fragrances or active agents, into the environment. The device benefits from an efficient release system supported by heat and air flow, making it adaptable for various dispensable and / or diffusable substances, enhancing control over substance diffusion into the environment. This structure is ideal for applications where sustained diffusion or a controlled substance release is essential, improving effectiveness and consistency.
[0013] According to a preferred embodiment, the housing comprises at least one air flow generating device configured to generate at least one clean air flow free of substance, wherein the control device is configured to supply the at least one electrical heating device and the at least one air flow generating device with electrical energy, preferably either simultaneously or sequentially, individually or collectively, from an external and / or internal energy source, such that a clean air flow, which enters the interior space of the housing through the at least one clean air flow inlet, is loadable with substance in the release section of the housing and is discharged as a substance-laden air flow through the at least one substance-laden air flow outlet from the interior space of the housing into the surrounding environment. The provision of an air flow generating device, combined with the heating device, enhances control over the diffusion process. The ability to supply energy simultaneously or sequentially optimizes the release of the substance and the air flow, allowing flexibility in how substances are dispensed or diffused, which can be especially useful for varying room sizes or desired intensity. Furthermore, a targeted, fast-flowing substance-laden air flow can be generated, which is not only effectively and quickly enriched with substance, but also released into the environment at a high flow rate. The relatively high flow velocity makes it possible to effectively distribute the substance to be released even in a larger room volume. This means that the high flow velocity allows good diffusion or dispersion of the substance to be released even in larger rooms.
[0014] According to another preferred embodiment, the housing comprises a first housing part and a second housing part, which are detachably connected to each other. The first housing part comprises the interior space in which the storage section is receivable or formed. The first housing part may not initially include a storage section that holds the substance, allowing, for example, a container typically referred to in the field as a refill to be detachably inserted into the first housing part. According to a specifically preferred embodiment, however, it is provided that the storage section is formed within the first housing part, thus essentially constituting an integral part of it, so that the first housing part itself functions as an exchangeable refill. The first housing part further comprises the delivery device that is in fluid communication with a dispensable and / or diffusible substance in the storage section and comprises the at least one substance-discharging area, which is associated with the release section of the interior space. The first housing part further comprises the at least one electrical heating device that is configured to generate heat that supports the release of the substance into the release section. And the first housing part further comprises the at least one clean air flow inlet and the at least one substance-laden air flow outlet, which are fluidly connected within the first housing part by the at least one air flow channel formed within or by the first housing part. Furthermore, the at least one air flow channel at least partially extends in the area of the release section. The second housing part comprises the at least one air flow generating device configured to generate at least one clean air flow free of substance. The second housing part further comprises at least one clean air flow outlet, which, in the connected state of the first housing part and the second housing part, is fluidly connected to the at least one air flow channel of the first housing part, so that the at least one clean air flow exits the second housing part through the at least one clean air flow outlet and enters the first housing part through the at least one clean air flow inlet, flowing into the at least one air flow channel. And furthermore, the second housing part comprises at least part of the control device. This embodiment adds the functionality of a first and second housing part, which are detachably connected, facilitating easy assembly and maintenance. The separation of air flow generation from the substance storage provides modular design flexibility, enabling customization for different types of dispensable substances or usage environments. The fluid connection between the parts ensures seamless operation, contributing to the versatility of the device.
[0015] According to another preferred embodiment, the control device comprises at least one electrical contact element in the first housing part, through which the at least one electrical heating device is coupled to enable energy transfer. Furthermore, the control device comprises at least one electrical contact element in the second housing part, which, in the connected state of the first housing part and the second housing part, is connected to the at least one electrical contact element of the first housing part, allowing for the transfer of energy. And the control device comprises at least one operating element, by means of which, upon activation, the at least one electrical contact element of the second housing part and the at least one air flow generating device are suppliable with electrical energy. This allows to supply the at least one electrical heating device with electrical energy for heating via the at least one electrical contact element of the first housing part. This design ensures secure and reliable electrical connectivity for both the heating and air flow systems, enabling smooth operation and reducing the risk of disconnection or malfunction. The operating element of the control device further enhances user control, making the device highly adaptable to various operational requirements.
[0016] According to another preferred embodiment, the control device comprises at least one control circuit, which is configured to control the operation of the at least one electrical heating device and the at least one air flow generating device. The ability to control both components via a circuit optimizes energy usage, leading to more efficient operation and improved user experience, particularly for maintaining a consistent diffusion rate.
[0017] According to another preferred embodiment, the control device comprises a first control circuit and a second control circuit, wherein the first control circuit is configured to control the operation of the at least one air flow generating device and to supply electrical energy to the second control circuit, and wherein the second control circuit is configured to control the operation of the at least one electrical heating device via the at least one electrical contact element of the second housing part. This modular control improves precision in how the air flow and heat are applied, allowing for tailored substance diffusion, based on user preference or environmental needs.
[0018] According to another preferred embodiment, the at least one control circuit is part of at least one Printed Circuit Board. This embodiment integrates the control circuit into a Printed Circuit Board (PCB) , simplifying the assembly and ensuring efficient operation. The inclusion of a PCB enhances reliability and compactness, offering a durable and easy-to-manufacture design. Specifically preferred is an embodiment according to which the first control circuit is part of a first Printed Circuit Board and the second control circuit is part of a separate second Printed Circuit Board. This specifically preferred embodiment adds further flexibility by introducing separate PCBs for the control circuits. This modular approach simplifies maintenance and allows for individual circuit optimization, leading to increased operational efficiency and extended device lifespan.
[0019] According to another preferred embodiment, the at least one electrical contact element in the first housing part is freely accessible on an outer side of the first housing part, preferably formed by a contact pin element, which extends outwardly from the first housing part, with a free end towards the second housing part. Furthermore, the at least one electrical contact element in the second housing part is freely accessible on an outer side of the second housing part, preferably formed by a contact pin element, which extends outwardly from the second housing part, with a free end towards the first housing part. This embodiment ensures easy accessibility and connectivity between the housing parts. This improves user experience by simplifying assembly, disassembly, and maintenance while ensuring robust electrical performance.
[0020] According to another preferred embodiment, the at least one electrical contact element in the first housing part and / or in the second housing part is a spring-loaded contact pin element, comprising a movable pin that is biased by a spring element. This ensures reliable electrical connectivity between the housing parts. The use of a movable pin biased by a spring element ensures consistent contact pressure, which minimizes the risk of disconnection due to vibrations or misalignment. This feature enhances durability and long-term reliability, even with repeated assembly and disassembly.
[0021] According to another preferred embodiment, the at least one electrical contact pin element in the second housing part is fixed to the second Printed Circuit Board, preferably in such a way that the at least one electrical contact pin element extends substantially perpendicular from the second Printed Circuit Board. The perpendicular mounting of the contact pin element to the PCB further improves structural integrity and electrical performance, ensuring stable connections during operation.
[0022] According to another preferred embodiment, the at least one clean air flow outlet is arranged in the region of the at least one electrical contact element, preferably at least partially surrounding the at least one electrical contact element. This embodiment optimizes the placement of the air flow outlet and / or the electrical contact elements, reducing construction space. The proximity of these elements improves the device's overall performance by enhancing the interaction between the air flow and the release of the substance.
[0023] According to another preferred embodiment, the at least one air flow generating device is arranged at a distance from the at least one clean air flow outlet in the interior space of the second housing part, preferably in such way that an air guide channel extends in the interior space between the at least one clean air flow outlet and the at least one air flow generating device, preferably with the air guide channel tapering towards the at least one clean air flow outlet. This leads to more effective flow control and directs the air flow more efficiently toward the outlet.
[0024] According to another preferred embodiment, the second housing part has at least one ambient air inlet through which, upon activation of the at least one air flow generating device, ambient air is drawable into the interior space of the second housing part, preferably with the at least one ambient air inlet provided on a base surface of the second housing part. This improves the overall diffusion process, allowing the system to maintain a fresh and continuous air flow.
[0025] According to another preferred embodiment, the at least one electrical contact element of the second housing part is freely accessible on an upper side of the second housing part opposite to a base surface, seen in the vertical axis direction. This arrangement optimizes the device's internal structure, ensuring easy access for assembly or maintenance, while also preventing interference with the air flow system.
[0026] According to another preferred embodiment, the first housing part forms an upper housing part, to which, in the direction of the vertical axis, the second housing part is connected as a lower housing part. This facilitates assembly and enhances device stability. The vertical design further improves diffusion efficiency, making it ideal for both small and large spaces.
[0027] According to another preferred embodiment, the second housing part has, on its upper side, a receiving opening with a receiving opening wall that at least partially surrounds the first housing part in a ring-shaped and / or contour-adapted manner in the connected state. Alternatively, the first housing part has, on its bottom side, a receiving opening with a receiving opening wall that at least partially surrounds the second housing part in a ring-shaped and / or contour-adapted manner in the connected state. Thes embodiments ensure that the housing parts remain securely connected during use, preventing leaks and ensuring consistent air flow.
[0028] According to another preferred embodiment, the at least one clean air flow inlet is, as seen in a vertical axis direction, arranged on a lower side and the at least one substance-laden air flow outlet is arranged on an upper side of the first housing part, and that the at least one air flow channel of the first housing part extends in the vertical axis direction and is at least partially, preferably fully, surrounded in a ring-shaped manner by the storage section. This optimizes the diffusion path and minimizes construction space. Furthermore, this configuration ensures that the air flows consistently through the release section.
[0029] According to another preferred embodiment, the at least one electrical contact element in the first housing part is formed by a contact pin element, which extends in the vertical axis direction and is at least partially, preferably fully, surrounded in a ring-shaped manner by the at least one air flow channel. This saves construction space and ensures a consistent power supply to the heating device.
[0030] According to another preferred embodiment, the release section, as seen in the vertical axis direction, is arranged between the storage section and the at least one substance-laden air flow outlet, wherein the at least one air flow channel extends through the release section. This configuration does not only improve the interaction between the substance and the air flow but also ensures an efficient diffusion process by optimizing the release path. This is further refinable by another specific embodiment according to which the release section, as seen in the vertical axis direction, is arranged above the storage section and below the at least one substance-laden air flow outlet. This ensures that the substance is efficiently transferred from the storage section to the environment. This structured design enhances control over the diffusion process.
[0031] According to another preferred embodiment, the release section is formed by a housing insert, which, as seen in the vertical axis direction, is mountable from above onto the storage section and is detachably connected to it, wherein it is preferably provided that the housing insert is designed in multiple parts and includes a separate, removable housing insert part that forms the at least one substance-laden air flow outlet. This modularity improves user experience by simplifying maintenance and replacement of components, particularly for long-term use.
[0032] According to another preferred embodiment, an air flow channel connecting the clean air flow inlet and the substance-laden air flow outlet tapers at least in the area above the substance-discharging area towards the substance-laden air flow outlet, preferably by providing a continuously narrowing an / or smooth and / or funnel-shaped wall section of the air flow channel. This design of the airflow path minimizes internal condensation, especially if the electrical heating device respectively electrical heating element (see below) is positioned on top of the storage section. The tapering is specifically designed here so that, for instance, no edges or corners are formed.
[0033] According to another preferred embodiment, the release section is sealed against the storage section by at least one sealing element. This embodiment ensures that the storage and release sections remain separate until the substance is delivered by the delivery device.
[0034] According to another preferred embodiment, the delivery device comprises a part made at least partially of a substance-absorbing and substance-retaining material, wherein the portion formed from this material forms a substance retention element that comprises and / or forms the at least one substance-discharging area and is arranged, at least partially, in the release section, such that a clean air flow in the air flow channel is flowable over and / or around it towards the substance-laden air flow outlet. This embodiment introduces a substance retention element, which improves control over the release process by ensuring that the substance is held until release is desired. This element enhances precision and substance conservation, particularly for continuous use. Fundamentally, any material that possesses the required properties is suitable, for example non-woven material, cotton, porous ceramic, and / or porous plastic. Through the use of such material, preferably a non-woven material, the substance retention element can be designed to enhance leakage protection. Specifically, this configuration allows the retention element to securely contain the substance even if the device is inadvertently turned upside down, thereby preventing unintended substance release or leakage from the delivery device. This design feature contributes to improved handling safety and storage reliability, making it particularly advantageous for applications where the orientation of the device may vary.
[0035] According to another preferred embodiment, the delivery device further comprises a capillary element, preferably a wick, that is in fluid communication with a substance in the storage section and that is, preferably with a free wick end of a wick as the capillary element, in substance-transferring contact with a contact area of the substance retention element. The capillary element allows the substance to be transferred efficiently from the storage section to the release section. This embodiment improves control over the rate of release and ensures consistent performance. More specifically, the capillary element extends with a lower end into the storage section, where the capillary element lower end is in fluid communication with the substance. As a result, the substance is transported upwards towards the substance retention element by capillary action of the capillary element, where the upper end of the capillary element is in substance-transferring contact with a contact area of the substance retention element. The substance transported to the substance retention element by the capillary element is absorbed and temporarily stored by the substance retention element and can then be released via the substance-discharging area in the release section into the clean air flow, resulting in a substance-laden air flow that exits the housing, and thus the device, through the substance-laden air flow outlet. Although it is preferred that the substance retention element and the capillary element are formed as separate components in order to optimize them for their specific functions, they may also be integrally connected to form a single, continuous piece and / or may be made from the same material. This alternative, where the substance retention element and the capillary element are integrally connected and / or made from the same material, is an option if one aims to reduce components, enhance capillary action, and increase mechanical stability.
[0036] According to another preferred embodiment, the capillary element extends in the vertical axis direction, preferably positioned next to and / or parallel to the at least one air flow channel. This embodiment saves construction space and enhances the device’s ability to handle liquid substances efficiently, improving overall functionality.
[0037] According to another preferred embodiment, at least the substance retention element is provided with a liquid-tight casing with at least one opening exposing the at least one substance-discharging area. This embodiment enhances the device’s ability to handle liquid substances efficiently, improving overall functionality.
[0038] According to another preferred embodiment, the liquid-tight casing comprises at least one opening exposing the contact area that is in substance-transferring contact with the capillary element, preferably with a free wick end of a wick as the capillary element. This embodiment refines the casing by introducing openings that expose the substance-discharging area, ensuring efficient release and minimizing substance waste. This design optimizes the interaction between the air flow and the substance for maximum release efficiency.
[0039] According to another preferred embodiment, the substance-absorbing and substance-retaining material is a heatable material, preferably porous ceramic, metal foam, or activated carbon. This embodiment ensures that the substance can be efficiently released through heating from the substance retention element.
[0040] According to another preferred embodiment, the capillary element is made from a different material than the substance retention element. Preferably, the capillary element is made from non-woven material, cotton, synthetic fibers, porous ceramic, and / or porous plastic. Through the use of such material, preferably a non-woven material, the capillary element can be designed to enhance leakage protection. Specifically, this configuration allows the capillary element to securely contain the substance even if the device is inadvertently turned upside down, thereby preventing unintended substance release or leakage from the delivery device. However, the capillary element may also be made from the same material as the substance retention element. By using different materials for the capillary element and the substance retention element, this embodiment optimizes material properties for specific functions. A capillary element made from a different material, for example materials like cotton, synthetic fibers, porous ceramic and / or porous plastic, can maximize liquid absorption and transfer efficiency from the storage section to the substance retention element. Meanwhile, the substance retention element can be tailored for holding and storing the substance efficiently. However, the flexibility to use the same material for both components offers design simplicity and cost-effectiveness, ensuring that the device can meet different performance or manufacturing requirements based on the intended application.
[0041] According to another preferred embodiment, the substance retention element has a rectangular and / or block-like shape. This ensures that the substance retention element is compact and efficient. The block-like shape allows for easy integration into the housing, optimizing retention ability and release efficiency.
[0042] According to another preferred embodiment, the at least one electrical heating device comprises at least one electrical heating element that is associated with the delivery device. This embodiment ensures that heat is applied directly where needed, improving overall efficiency.
[0043] According to another preferred embodiment, the substance retention element is provided with at least one electrical heating element, preferably at least one heating resistor, by means of which the substance retention element is heatable. This ensures that the heat can be applied directly to the area where it is needed, ensuring efficient heat transfer without significant losses. This direct heating approach allows for faster and more consistent release of the substance. Additionally, integrating the heating element into the substance retention element results in a more compact and space-saving design, improving the device’s overall efficiency and making it suitable for confined spaces while maintaining high performance. The at least one heating element can be applied directly to the surface of the substance retention element and / or embedded within it.
[0044] According to another preferred embodiment, the at least one electrical heating element is electrically connectable or connected by means of the at least one electrical contact element in the first housing part. This improves reliability and ensures that the heating element operates efficiently.
[0045] According to another preferred embodiment, the at least one air flow channel is formed approximately centrally, seen in the vertical axis direction of the device. This configuration optimizes the distribution of the substance-laden air flow, ensuring even diffusion throughout the surrounding environment. By placing the air flow channel centrally, the claim also enhances the overall structural balance and efficiency of the device, making it particularly effective for consistent and uniform air care or pest control in various spaces. This design choice contributes to a more streamlined and functional device with improved performance.
[0046] Another object of the invention is to provide a delivery device that is suitable for use in a device for dispensing and / or diffusing substances, particularly for use in a device for dispensing and / or diffusing substances as described above, and / or that allows very good control over the release of a substance.
[0047] [Rectified under Rule 91, 14.05.2025]This object is achieved with the features of independent claim 35. Advantageous embodiments are the subject of the dependent claims referring to it.
[0048] According to the invention a delivery device for a device for dispensing and / or diffusing substances comprises:
[0049] - a part made at least partially of a substance-absorbing and substance-retaining material, wherein the portion formed from this material forms a substance retention element that is configured to retain a dispensable and / or diffusable substance, preferably a liquid substance, with the substance retention element comprising and / or forming at least one substance-discharging area and being configured to be arranged in an air flow such that air is flowable over and / or around it, and
[0050] - at least one electrical heating element, preferably at least one heating resistor, by means of which the substance retention element is heatable.
[0051] The substance retention element improves control over the release process by ensuring that the substance is held until release is desired. This element enhances precision and substance conservation.
[0052] The provision of the substance retention element with at least one heating element, preferably at least one heating resistor, by means of which the substance retention element is heatable ensures that the heat can be applied directly to the area where it is needed, ensuring efficient heat transfer without significant losses. This direct heating approach allows for faster and more consistent release of the substance. Additionally, integrating the heating element into the substance retention element results in a more compact and space-saving design, improving the device’s overall efficiency and making it suitable for confined spaces while maintaining high performance. The at least one heating element can be applied directly to the surface of the substance retention element and / or embedded within it.
[0053] According to another preferred embodiment, the delivery device further comprises a capillary element, preferably a wick, that is, preferably with a free wick end of a wick as the capillary element, in substance-transferring contact with a contact area of the substance retention element and that is configured to be in fluid communication with a dispensable and / or diffusable substance, preferably a liquid substance. The capillary element allows the substance to be transferred efficiently from the storage section to the release section. This embodiment improves control over the rate of release and ensures consistent performance. The capillary element allows a substance to be transferred efficiently from a storage section to a release section. This embodiment improves control over the rate of release and ensures consistent performance. More specifically, the capillary element can extend with a lower end into a storage section, where the capillary element lower end is in fluid communication with a substance. As a result, the substance is transportable upwards towards the substance retention element by capillary action of the capillary element, where the upper end of the capillary element is in substance-transferring contact with a contact area of the substance retention element. The substance transported to the substance retention element by the capillary element is absorbed and temporarily stored by the substance retention element and can then be released via at least one defined substance-discharging area into a clean air flow, resulting in a substance-laden air flow. Although it is preferred that the substance retention element and the capillary element are formed as separate components in order to optimize them for their specific functions., they may also be integrally connected to form a single, continuous piece and / or may be made from the same material. This alternative, where the substance retention element and the capillary element are integrally connected and / or made from the same material, is an option if one aims to reduce components, enhance capillary action, and increase mechanical stability.
[0054] According to another preferred embodiment, the substance retention element is provided with a liquid-tight casing with at least one opening exposing the at least one substance-discharging area. This embodiment enhances the device’s ability to handle liquid substances efficiently, improving overall functionality.
[0055] According to another preferred embodiment, the liquid-tight casing comprises at least one opening exposing the contact area that is in substance-transferring contact with the capillary element, preferably with a free wick end of a wick as the capillary element. This embodiment refines the casing by introducing openings that expose the substance-discharging area, ensuring efficient release and minimizing substance waste. This design optimizes the interaction between the air flow and the substance for maximum release efficiency.
[0056] According to another preferred embodiment, the substance-absorbing and substance-retaining material is a heatable material, preferably porous ceramic, metal foam, or activated carbon. This embodiment ensures that the substance can be efficiently released through heating from the substance retention element.
[0057] According to another preferred embodiment, the capillary element is made from a different material than the substance retention element. Preferably, the capillary element is made from cotton, synthetic fibers, porous ceramic, and / or porous plastic. However, the capillary element may also be made from the same material as the substance retention element. By using different materials for the capillary element and the substance retention element, this embodiment optimizes material properties for specific functions. A capillary element made from a different material, for example materials like cotton, synthetic fibers, porous ceramic and / or porous plastic, can maximize liquid absorption and transfer efficiency from the storage section to the substance retention element. Meanwhile, the substance retention element can be tailored for holding and storing the substance efficiently. However, the flexibility to use the same material for both components offers design simplicity and cost-effectiveness, ensuring that the device can meet different performance or manufacturing requirements based on the intended application.
[0058] According to another preferred embodiment, the substance retention element has a rectangular and / or block-like shape. This ensures that the substance retention element is compact and efficient. The block-like shape allows for easy integration into the housing, optimizing retention ability and release efficiency. This embodiment ensures that heat is applied directly where needed, improving overall efficiency.
[0059] According to another preferred embodiment, the at least one heating element is electrically connectable or connected by means of at least one electrical contact element which is configured to supply the at least one electrical heating element with electrical energy.
[0060] Furthermore, a method is claimed by which the devices described above can be operated in a functionally safe and reliable manner. The resulting advantages are identical to those of the devices, so that, to avoid further repetition, reference is made to the explanations given above.
[0061] The invention is described in more detail below by means of a drawing:
[0062] Fig. 1 shows a schematic, perspective, and exemplary embodiment of a device for dispensing and / or diffusing substances according to the invention in an exploded view, where the first housing part, which forms a refill, is not connected to the second housing part.
[0063] Fig. 2 depicts the representation according to Fig. 1, where the first housing part and the second housing part are connected to each other.
[0064] Fig. 3 is a schematic, perspective view of an exemplary embodiment of a substance retention element without a liquid-tight casing.
[0065] Fig. 4 shows a schematic sectional view along line A-Athrough the first housing part of Fig. 1.
[0066] Fig. 5 is a schematic sectional view along line B-B of Fig. 2 in the activated state of the device.
[0067] Fig. 6 provides a schematic sectional view along line C-C of Fig. 5.
[0068] Fig. 7 illustrates a schematic principle sketch, showing essential components of the device in a top perspective view.
[0069] Fig. 8 is a principle sketch corresponding to Fig. 7, but without the air flow generating device and shown from a bottom perspective view.
[0070] Figures 1 and 2 each show an exemplary embodiment of a device 1 for dispensing and / or diffusing substances according to the invention, comprising a two-part housing 2 with a first housing part 3 and a second housing part 4, which are detachably connectable to each other. Fig. 1 shows the state where the first housing part 3 and the second housing part 4 are not connected, while Fig. 2 shows the connected state.
[0071] In the vertical axis direction x shown here, the first housing part 3 forms an upper housing part, to which, in the vertical axis direction x, the second housing part 4 is connected as a lower housing part.
[0072] As can be seen especially in Fig. 4, which shows a section along line A-Aof Fig. 1, the first housing part 3 functions here as an exemplary and preferably replaceable refill. For this purpose, the first housing part 3 comprises an interior space 5 in which a storage section 6 is formed. Specifically, the storage section 6 is formed here in a lower or lowermost area of the first housing part 3 with respect to the vertical axis direction x and is further suitable for accommodating a dispensable and / or diffusible substance within. The dispensable and / or diffusible substance is preferably a liquid substance, such as a liquid active substance for air care or pest control, to name just a few examples.
[0073] As can also be seen in Fig. 5, which shows a section along line B-B of Fig. 2, and Fig. 6, which shows a section along line C-C of Fig. 5, the first housing part 3 in the exemplary embodiment shown here comprises a centrally arranged air flow channel 7, which extends in the vertical axis direction x and fluidly connects a clean air flow inlet 8 formed on the lower side of the first housing part 3 with a substance-laden air flow outlet 9 formed on the upper side of the first housing part 3. In this configuration, the air flow channel 7 extends over the entire height of the first housing part 3 in the vertical axis direction x, with the storage section 6 surrounding the centrally arranged air flow channel 7 in a ring shape.
[0074] In the example shown here, the storage section 6 of the first housing part 3 is followed by a release section 10, which is formed by a housing insert 11 that, as seen in the vertical axis direction x, is mountable from above onto the storage section and is detachably connected to it. In this example, the housing insert 11 is designed in two parts and includes a first removable housing insert part 12 that forms the substance-laden air flow outlet 9 and a second removable housing insert part 13, which seals the storage section 6 with the interposition of a sealing element 14.
[0075] As can be seen especially in Fig. 5, the air flow channel 7 passes through the housing insert 11, with the section of the air flow channel 7 passing through the housing insert 11 specifically forming the release section 10. Thus, in the embodiment shown here, the release section 10 is located directly below the substance-laden air flow outlet 9.
[0076] As can further be seen from Figures 4 to 6, the first housing part 3 also comprises a delivery device 15 that is in fluid communication with a dispensable and / or diffusible substance 16 in the storage section 6. The delivery device 15 includes a substance-discharging area 17 associated with the release section 10, which will be described in more detail below with specific reference to Figure 5.
[0077] Here, the air flow channel 7 connecting the clean air flow inlet 8 and the substance-laden air flow outlet 9 tapers at least in the area above the substance-discharging area 17 towards the substance-laden air flow outlet 9, preferably as can be best seen in Figures 4 to 6, by providing a continuously narrowing an / or smooth and / or funnel-shaped wall section of the air flow channel 7. This design helps to prevent internal condensation, especially, as here by example, when combined with the placement of a heating element 19 (explained in more detail below) on top of the storage section 6.
[0078] In the example shown here, the delivery device 15 comprises a substance retention element 18, which is illustrated schematically and by way of example in Figure 3. In this example, it is entirely made from a substance-absorbing and substance-retaining material. This substance-absorbing and substance-retaining material is a heatable material, preferably porous ceramic, metal foam, or activated carbon. Similar to a sponge, the substance retention element 18 is thus able to absorb, store, and release the substance.
[0079] As further seen in Figure 3, the substance retention element 18 is provided with a heating element 19, exemplarily shown here as a heating resistor, which may be arranged on the surface of the substance retention element 18, as illustrated here, or may also be embedded within the substance retention element 18. For electrical contact of the heating element 19, two electrical contact surfaces 20, 21 are provided, as shown in Figure 3, and will be discussed in further detail below.
[0080] In this exemplary embodiment, the substance retention element 18 has a rectangular and / or block-like shape, with the end of the element containing the heating element 19 being arranged in the release section 10, and thus within the air flow channel 7, such that a clean air flow 22 in the air flow channel 7 is flowable over and / or around it towards the substance-laden air flow outlet 9.
[0081] The delivery device 15 also includes a capillary element 22 in this example, which is here formed, for instance, by a wick made from cotton, synthetic fibers, porous ceramic, and / or porous plastic.
[0082] This wick as a capillary element 23 extends, as clearly shown in Figure 5, next to and parallel to the air flow channel 7, with a lower capillary element end 24, in relation to the vertical axis direction x, extending through the second removable housing insert part 13 and the sealing element 14 into the storage section 6, where the capillary element end 24 is in fluid communication with the substance 16. As a result, the substance 16 is transported upwards towards the substance retention element 18 by capillary action of the capillary element 23, where the upper capillary element end 25, with a free wick end, is in substance-transferring contact with a contact area 26 of the substance retention element 18. The substance 16 transported to the substance retention element 18 by the capillary element 23 is absorbed and temporarily stored by the substance retention element 18 and can then be released via the substance-discharging area 17 in the release section 10 into the clean air flow 22, resulting in a substance-laden air flow 27 that exits the housing 2, and thus the device 1, through the substance-laden air flow outlet 9. Although it is preferred that the substance retention element 18 and the capillary element 23 are formed as separate components in order to optimize them for their specific functions, they may also be integrally connected to form a single, continuous piece and / or may be made from the same material.
[0083] For targeted substance delivery to the substance retention element 18 or from the substance retention element 18, it is preferably provided with a liquid-tight casing 28 that has an opening 29 (see also Fig. 7) on the upper side of the substance retention element 18, relative to the plane of Fig. 5, which exposes the substance-discharging area 17. Additionally, the liquid-tight casing 28 has an opening 30 (see also Fig. 7) on its underside, relative to the plane of Fig. 5, that exposes the contact area 26, which is in substance-transferring contact with the upper capillary element end 25.
[0084] The release of the substance via the substance-discharging area 17 in the release section 10 is further supported by heating the substance retention element 18 using the electrical heating element 19, whose electrical connections and functionality will be described in more detail below.
[0085] The electrical heating element 19, as described above, has two contact surfaces 20, 21, which, as seen especially in Figures 4 to 6, are electrically contacted here by way of two exemplary first electrical contact elements 31. The two first electrical contact elements 31 are formed here, by way of example, as spring-loaded contact pin elements, each comprising a movable pin that is biased by a spring element. Specifically, the two first electrical contact elements 31 are arranged within the air flow channel 7 in this example and thus extend in the vertical axis direction x. The two first electrical contact elements 31 are held within the air flow channel 7, particularly configured as spring-loaded contact pin elements, and are mounted to be movable. The two first electrical contact elements 31 are freely accessible on their underside relative to the plane of Figure 4, enabling electrical contact with second electrical contact elements 32 of the second housing part 4.
[0086] As can be further seen, especially in Figure 1, the two second electrical contact elements 32 are freely accessible on the upper side of the second housing part 4 or project there. The two second electrical contact elements 32 are also, in this example, configured as spring-loaded contact pin elements, each with a movable pin that is biased by a spring element.
[0087] Such spring-loaded contact pin elements, as exemplarily used here for the first and second electrical contact elements, are also known as pogo pins.
[0088] As can be seen especially from Figures 5 and 6, the device 1 in the example shown here comprises a control device 33, which includes a first control circuit and a second control circuit, both of which are part of a first PCB (Printed Circuit Board) 34 and a second PCB (Printed Circuit Board) 35, respectively. In this example, the two second electrical contact elements 32 are also fixed to the second PCB 35, positioned such that they extend, as part of the second housing part 4, substantially in the vertical axis direction x upwards toward the first housing part 3. The second PCB 35, like the first PCB 34, is supported within the second housing part 4, so that the second PCB 35 provides a solid support base for the second electrical contact elements 32.
[0089] When the first housing part 3, which forms a refill, is placed onto the second housing part 4, as shown in Figures 1 and 2, the free ends of the two second electrical contact elements 32 come into contact with the associated ends of the first electrical contact elements 31. This establishes an energy-transferring or current-conducting connection, which enables the controlled heating of the electrical heating element 19.
[0090] The control device 33 can receive electrical energy from an external power source, for example, connected via a USB port 36, such as a power grid, and transmit it from the first PCB 34 to the second PCB 35.
[0091] However, not only the design of the first electrical contact elements 31 and second electrical contact elements 32 as pogo pins ensures a secure and reliable connection, but also the form-and contour-adapted reception of the first housing part 3 in a pot-shaped receiving opening 37 on the upper side of the second housing part 4, as can be seen particularly in Figures 1, 2, as well as Figures 5 and 6. Specifically, a receiving opening wall 38 surrounds the first housing part 3 in a ring-shaped and / or contour-adapted manner when connected.
[0092] As can also be seen particularly from Figures 5 and 6, the second housing part 4 has a clean air flow outlet 39 on its upper side, which in this example also surrounds the two second contact elements 32 in a ring shape. This clean air flow outlet 39, when the first housing part 3 and the second housing part 4 are connected, directly adjoins the clean air flow inlet 8 of the first housing part, thereby establishing a flow connection between the first housing part 3 and the second housing part 4, which is described in more detail below.
[0093] As can also be seen from Figures 5 and 6, the second housing part 4 further comprises an air flow generating device 40, which is exemplarily configured as a fan. This fan as the air flow generating device 40 is, in the example shown here, spaced apart from the clean air flow outlet 39 and is supported or rotatably mounted in an interior space 41 of the second housing part 4. When activated, it generates a clean air flow 22 that flows through the clean air flow outlet 39 of the second housing part 4 and the clean air flow inlet 8 of the first housing part into the air flow channel 7 of the first housing part 3, from where it continues towards the release section 10. There, it is loaded with the substance 16, ultimately discharging as a substance-laden air flow 27 through the substance-laden air flow outlet 9 of the first housing part 3 into the environment at high flow speed.
[0094] To ensure a targeted and directed flow of the clean air flow 22 towards the clean air flow outlet 39 of the second housing part 4, the example shown here includes an air guide channel 42, which tapers from the air flow generating device 40 towards the clean air flow outlet 39.
[0095] Furthermore, as can be seen from Figures 5 and 6, the second housing part 4 has, by way of example, at least one ambient air inlet 44 on a base surface 43, in this example featuring a plurality of ambient air inlets 44, through which, upon activation of the air flow device 40, ambient air 45 can be drawn into the interior space 41 of the second housing part 4. Figures 7 and 8 each show perspective and sketch-like views of the fundamental configuration of the exemplary invention solution presented here, highlighting the essential components of the device 1 for better understanding.
[0096] Similar to the second PCB 35, the first PCB 34 is also housed within the second housing part 4. The energy or power supply for the drive unit 46 of the air flow generating device 40 is controlled via the first PCB 34 and the control device 33. For example, in this instance, the drive unit 46 is represented by an electric motor, which in the configuration shown here drives an impeller 47 of the air flow generating device 40.
[0097] In the example shown here, the control device 33 also includes an operating element 48 that is freely accessible on the outer side of the second housing part 4. Here, it is represented by an on / off button, which, when activated, supplies electrical power via the USB port 36 from an external energy source to the first PCB 34, and directly or indirectly through the first PCB 34 to the second PCB 35, thereby enabling the operation of both the air flow generating device 40 and the electrical heating element 19.
[0098] The first PCB 34 can thus function as the main PCB, containing the essential control circuits and components required for the operation of device 1, such as microcontrollers, processors, voltage regulators, interfaces, and other crucial components that control the core functions of device 1. Meanwhile, in the example shown here, the second PCB 35 is primarily used for the specific task of controlling the electrical heating element 19.
[0099] The control device 33 is configured to supply the electrical heating element 19 and the air flow generating device 40 with electrical energy, either simultaneously or sequentially, individually or collectively, from an external energy source. Alternatively, an internal energy source, such as an energy storage device like an accumulator or a battery, can also be used.
[0100] List of reference signs
[0101] 1 device
[0102] 2 housing
[0103] 3 first housing part
[0104] 4 second housing part
[0105] 5 interior space
[0106] 6 storage section
[0107] 7 air flow channel
[0108] 8 clean air flow inlet
[0109] 9 substance-laden air flow outlet
[0110] 10 release section
[0111] 11 housing insert
[0112] 12 first removable housing insert part
[0113] 13 second removable housing insert part
[0114] 14 sealing element
[0115] 15 delivery device
[0116] 16 substance
[0117] 17 substance-discharging area
[0118] 18 substance retention element
[0119] 19 heating element
[0120] 20 contact surface
[0121] 21 contact surface
[0122] 22 capillary element
[0123] 23 capillary element
[0124] 24 lower capillary element end
[0125] 25 upper capillary element end
[0126] 26 contact area
[0127] 27 substance-laden air flow
[0128] 28 casing
[0129] 29 opening
[0130] 30 opening
[0131] 31 first electrical contact element
[0132] 32 second electrical contact element
[0133] 33 control device
[0134] 34 first PCB
[0135] 35 second PCB
[0136] 36 USB port
[0137] 37 receiving opening
[0138] 38 receiving opening wall
[0139] 39 clean air flow outlet
[0140] 40 air flow generating device
[0141] 41 interior space
[0142] 42 air guide channel
[0143] 43 base surface
[0144] 44 ambient air inlet
[0145] 45 ambient air
[0146] 46 drive unit
[0147] 47 impeller
[0148] 48 operating element
Claims
1.Device for dispensing and / or diffusing substances, in particular for dispensing and / or diffusing fragrances and / or active substances in air care and / or pest control,comprising a housing (2) ,wherein the housing (2) comprises an interior space (5) being configured to receive or form a storage section (6) that is configured to accommodate a dispensable and / or diffusible substance (16) , preferably a liquid substance,wherein the housing (2) comprises a delivery device (15) that is in fluid communication with a dispensable and / or diffusible substance (16) in the storage section (6) and comprises at least one substance-discharging area (17) , which is associated with a release section (10) of the interior space (5) ,wherein the housing (2) comprises at least one electrical heating device (19) that is configured to generate heat that supports the release of the substance into the release section (10) ,wherein the housing (2) comprises at least one clean air flow inlet (8) and at least one substance-laden air flow outlet (9) , which are fluidly connected within the housing (2) by at least one air flow channel (7) formed within or by the housing (2) ,wherein the at least one air flow channel (7) at least partially extends in the area of the release section (10) ,wherein the housing (2) comprises a control device (33) , which is configured to supply the at least one electrical heating element (19) with electrical energy, such that a clean air flow (22) , which enters the interior space (5) of the housing (2) through the at least one clean air flow inlet (8) , is loadable with substance (16) in the release section (10) of the housing (2) and is discharged as a substance-laden air flow (27) through the at least one substance-laden air flow outlet (9) from the interior space (5) of the housing (2) into the surrounding environment.2.Device according to claim 1, characterized in thatthe housing (2) comprises at least one air flow generating device (40) configured to generate at least one clean air flow (22) free of substance,wherein the control device (33) is configured to supply the at least one electrical heating device (19) and the at least one air flow generating device (40) with electrical energy, such that a clean air flow (22) , which enters the interior space (5) of the housing (2) through the at least one clean air flow inlet (8) , is loadable with substance (16) in the release section (10) of the housing (2) and is discharged as a substance-laden air flow (27) through the at least one substance-laden air flow outlet (9) from the interior space of the housing (2) into the surrounding environment.3.Device according to claim 2, characterized in thatthe housing (2) comprises a first housing part (3) and a second housing part (4) , which are detachably connected to each other,the first housing part (3) comprises the interior space (5) in which the storage section (6) is receivable or formed, preferably the first housing part (3) comprises the interior space (5) in which the storage section (6) is formed such that the first housing part (3) functions as an exchangeable refill,the first housing part (3) comprises the delivery device (15) that is in fluid communication with a dispensable and / or diffusible substance (16) in the storage section (6) and comprises the at least one substance-discharging area (17) , which is associated with the release section (10) of the interior space (5) ,the first housing part (3) comprises the at least one electrical heating element (19) that is configured to generate heat that supports the release of the substance (16) into the release section (10) ,the first housing part (3) comprises the at least one clean air flow inlet (8) and the at least one substance-laden air flow outlet (9) , which are fluidly connected within the first housing part by the at least one air flow channel (7) formed within or by the first housing part (3) ,the at least one air flow channel (7) at least partially extends in the area of the release section (10) ,the second housing part (4) comprises the at least one air flow generating device (40) configured to generate at least one clean air flow (22) free of substance,the second housing part (4) comprises at least one clean air flow outlet (39) , which, in the connected state of the first housing part (3) and the second housing part (4) , is fluidly connected to the at least one air flow channel (7) of the first housing part (3) ,the second housing part (4) comprises at least part of the control device (33) .4.Device according to claim 3, characterized in thatthe control device (33) comprises at least one electrical contact element (31) in the first housing part (3) , through which the at least one electrical heating device (19) is coupled to enable energy transfer,the control device (33) comprises at least one electrical contact element (32) in the second housing part (4) , which, in the connected state of the first housing part (3) and the second housing part (4) , is connected to the at least one electrical contact element (31) of the first housing part (3) , allowing for the transfer of energy,the control device (33) comprises at least one operating element (48) , by means of which, upon activation, the at least one electrical contact element (32) of the second housing part (4) and the at least one air flow generating device (40) are suppliable with electrical energy.5.Device according to any one of the preceding claims, characterized in that the control device (33) comprises at least one control circuit, which is configured to control the operation of the at least one electrical heating device (19) and the at least one air flow generating device (40) .6.Device according to claim 4 and 5, characterized in that the control device comprises a first control circuit and a second control circuit, wherein the first control circuit is configured to control the operation of the at least one air flow generating device (40) and to supply electrical energy to the second control circuit, and wherein the second control circuit is configured to control the operation of the at least one electrical heating device (19) via the at least one electrical contact element (32) of the second housing part (4) .7.Device according to any one of the preceding claims 4 to 6, characterized in thatthe at least one electrical contact element (31) in the first housing part (3) is freely accessible on an outer side of the first housing part (3) , preferably formed by a contact pin element, which extends outwardly from the first housing part (3) , with a free end towards the second housing part (4) , andthe at least one electrical contact element (32) in the second housing part (4) is freely accessible on an outer side of the second housing part (4) , preferably formed by a contact pin element, which extends outwardly from the second housing part (4) , with a free end towards the first housing part (3) .8.Device according to any one of the preceding claims 4 to 7, characterized in that the at least one electrical contact element (31, 32) in the first housing part (3) and / or in the second housing part (4) is a spring-loaded contact pin element, comprising a movable pin that is biased by a spring element.9.Device according to any one of claims 4 to 8, characterized in that the at least one clean air flow outlet (39) is arranged in the region of the at least one electrical contact element (32) , preferably at least partially surrounding the at least one electrical contact element (32) .10.Device according to any one of claims 3 to 9, characterized in that the at least one air flow generating device (40) is arranged at a distance from the at least one clean air flow outlet (39) in the interior space (41) of the second housing part (4) .11.Device according to claim 10, characterized in that an air guide channel (42) extends in the interior space (41) between the at least one clean air flow outlet (39) and the at least one air flow generating device (40) , preferably with the air guide channel (42) tapering towards the at least one clean air flow outlet (39) .12.Device according to any one of claims 3 to 11, characterized in that the second housing part (4) has at least one ambient air inlet (44) through which, upon activation of the at least one air flow generating device (40) , ambient air (45) is drawable into the interior space (41) of the second housing part (4) , preferably with the at least one ambient air inlet (44) provided on a base surface (43) of the second housing part (4) .13.Device according to any one of claims 3 to 12, characterized in that the at least one electrical contact element (32) of the second housing part (4) is freely accessible on an upper side of the second housing part (4) opposite to a base surface (33) , seen in the vertical axis direction.14.Device according to any one of claims 3 to 13, characterized in that the first housing part (3) forms an upper housing part, to which, in the direction of the vertical axis, the second housing part (4) is connected as a lower housing part.15.Device according to claim 14, characterized in that the second housing part (4) has, on its upper side, a receiving opening (37) with a receiving opening wall (38) that at least partially surrounds the first housing part (3) in a ring-shaped and / or contour-adapted manner in the connected state.16.Device according to claim 14, characterized in that the first housing part has, on its bottom side, a receiving opening with a receiving opening wall that at least partially surrounds the second housing part in a ring-shaped and / or contour-adapted manner in the connected state.17.Device according to any one of claims 3 to 16, characterized in that, as seen in a vertical axis direction, the at least one clean air flow inlet (8) is arranged on a lower side and the at least one substance-laden air flow outlet (9) is arranged on an upper side of the first housing part (3) , and that the at least one air flow channel (7) of the first housing part (3) extends in the vertical axis direction and is at least partially, preferably fully, surrounded in a ring-shaped manner by the storage section (6) .18.Device according to claim 17, characterized in that the at least one electrical contact element (31) in the first housing part (3) is formed by a contact pin element, which extends in the vertical axis direction and is at least partially, preferably fully, surrounded in a ring-shaped manner by the at least one air flow channel (7) .19.Device according to any one of the preceding claims, characterized in that the release section (10) , as seen in the vertical axis direction, is arranged between the storage section (6) and the at least one substance-laden air flow outlet (9) , wherein the at least one air flow channel (7) extends through the release section (10) .20.Device according to claim 19, characterized in that the release section (10) , as seen in the vertical axis direction, is arranged above the storage section (6) and below the at least one substance-laden air flow outlet (9) .21.[Rectified under Rule 91, 14.05.2025]Device according to claim 20, characterized in that the release section (10) is formed by a housing insert (11) , which, as seen in the vertical axis direction, is mountable from above onto the storage section (6) and is detachably connected to it, wherein it is preferably provided that the housing insert (11) is designed in multiple parts and includes a separate, removable housing insert part (12) that forms the at least one substance-laden air flow outlet (9) .22.[Rectified under Rule 91, 14.05.2025]Device according to any one of the preceding claims, characterized in that an air flow channel (7) connecting the clean air flow inlet (8) and the substance-laden air flow outlet (9) tapers at least in the area above the substance-discharging area (17) towards the substance-laden air flow outlet (9) , preferably by providing a continuously narrowing an / or smooth and / or funnel-shaped wall section of the air flow channel (7) .23.[Rectified under Rule 91, 14.05.2025]Device according to any one of the preceding claims, characterized in that the release section (10) is sealed against the storage section (6) by at least one sealing element (14) .24.[Rectified under Rule 91, 14.05.2025]Device according to any one of the preceding claims, characterized in that the delivery device (15) comprises a part made at least partially of a substance-absorbing and substance-retaining material, wherein the portion formed from this material forms a substance retention element (18) that comprises and / or forms the at least one substance-discharging area (17) and is arranged, at least partially, in the release section (10) , such that a clean air flow (22) in the air flow channel (7) is flowable over and / or around it towards the substance-laden air flow outlet (9) .25.[Rectified under Rule 91, 14.05.2025]Device according to claim 24, characterized in that, the delivery device further comprises a capillary element (23) , preferably a wick, that is in fluid communication with a substance (16) in the storage section (6) and that is, preferably with a free wick end of a wick as the capillary element (23) , in substance-transferring contact with a contact area (26) of the substance retention element (18) .26.[Rectified under Rule 91, 14.05.2025]Device according to claim 25, characterized in that the capillary element (23) extends in the vertical axis direction, preferably positioned next to and / or parallel to the at least one air flow channel (7) .27.[Rectified under Rule 91, 14.05.2025]Device according to any one of claims 24 to 26, characterized in that the substance retention element (18) is provided with a liquid-tight casing (28) with at least one opening (29) exposing the at least one substance-discharging area (17) .28.[Rectified under Rule 91, 14.05.2025]Device according to claim 25 or 26 and claim 27, characterized in that the liquid-tight casing (28) comprises at least one opening (30) exposing the contact area (26) that is in substance-transferring contact with the capillary element (23) , preferably with a free wick end of a wick as the capillary element (23) .29.[Rectified under Rule 91, 14.05.2025]Device according to any one of claims 24 to 28, characterized in that the substance-absorbing and substance-retaining material is a heatable material, preferably porous ceramic, metal foam, or activated carbon.30.[Rectified under Rule 91, 14.05.2025]Device according to any one of claims 24 to 29, characterized in that the substance retention element (18) has a rectangular and / or block-like shape.31.[Rectified under Rule 91, 14.05.2025]Device according to any one of the preceding claims, characterized in that the at least one electrical heating device (19) comprises at least one electrical heating element that is associated with the delivery device (15) .32.[Rectified under Rule 91, 14.05.2025]Device according to any one of claims 24 to 31 and claim 31, characterized in that the substance retention element (18) is provided with the at least one electrical heating element (19) , preferably at least one heating resistor, by means of which the substance retention element (18) is heatable.33.[Rectified under Rule 91, 14.05.2025]Device according to claim 32, characterized in that the at least one electrical heating element (19) is electrically connectable or connected by means of the at least one electrical contact element (31) in the first housing part (3) .34.[Rectified under Rule 91, 14.05.2025]Device according to any one of preceding claims, characterized in that the at least one air flow channel (7) is formed approximately centrally, seen in the vertical axis direction of the device (1) .35.[Rectified under Rule 91, 14.05.2025]Delivery device for a device for dispensing and / or diffusing substances, in particular a device for dispensing and / or diffusing substances according to any one of preceding claims, comprising:a part made at least partially of a substance-absorbing and substance-retaining material, wherein the portion formed from this material forms a substance retention element (18) that is configured to retain a dispensable and / or diffusable substance (16) , preferably a liquid substance, with the substance retention element (18) comprising and / or forming at least one substance-discharging area (17) and being configured to be arranged in an air flow (22) such that air is flowable over and / or around it, andat least one electrical heating element (19) , preferably at least one heating resistor, by means of which the substance retention element (18) is heatable.36.[Rectified under Rule 91, 14.05.2025]Delivery device according to claim 35, characterized in that, the delivery device (15) further comprises a capillary element (23) , preferably a wick, that is, preferably with a free wick end of a wick as the capillary element (23) , in substance-transferring contact with a contact area (26) of the substance retention element (18) and that is configured to be in fluid communication with a dispensable and / or diffusable substance (16) , preferably a liquid substance.37.[Rectified under Rule 91, 14.05.2025]Delivery device according to claim 35 or 36, characterized in that the substance retention element (18) is provided with a liquid-tight casing with at least one opening (29) exposing the at least one substance-discharging area (17) .38.[Rectified under Rule 91, 14.05.2025]Delivery device according to claim 36 and 37, characterized in that the liquid-tight casing (28) comprises at least one opening (30) exposing the contact area (26) that is in substance-transferring contact with the capillary element (23) , preferably with a free wick end of a wick as the capillary element (23) .39.[Rectified under Rule 91, 14.05.2025]Delivery device according to any one of claims 35 to 38, characterized in that the substance-absorbing and substance-retaining material is a heatable material, preferably porous ceramic, metal foam, or activated carbon.40.[Rectified under Rule 91, 14.05.2025]Delivery device according to any one of claims 35 to 39, characterized in that the substance retention element (18) has a rectangular and / or block-like shape.41.[Rectified under Rule 91, 14.05.2025]Delivery device according to any one of claims 35 to 40, characterized in that the at least one electrical heating element (19) is electrically connectable or connected by means of at least one electrical contact element which is configured to supply the at least one electrical heating element with electrical energy.42.[Rectified under Rule 91, 14.05.2025]Method for operating a device according to any one of the preceding claims.22.[Rectified under Rule 91, 14.05.2025]23.[Rectified under Rule 91, 14.05.2025]24.[Rectified under Rule 91, 14.05.2025]25.[Rectified under Rule 91, 14.05.2025]26.[Rectified under Rule 91, 14.05.2025]27.[Rectified under Rule 91, 14.05.2025]28.[Rectified under Rule 91, 14.05.2025]29.[Rectified under Rule 91, 14.05.2025]30.[Rectified under Rule 91, 14.05.2025]31.[Rectified under Rule 91, 14.05.2025]32.[Rectified under Rule 91, 14.05.2025]33.[Rectified under Rule 91, 14.05.2025]34.[Rectified under Rule 91, 14.05.2025]35.[Rectified under Rule 91, 14.05.2025]36.[Rectified under Rule 91, 14.05.2025]37.[Rectified under Rule 91, 14.05.2025]38.[Rectified under Rule 91, 14.05.2025]39.[Rectified under Rule 91, 14.05.2025]40.[Rectified under Rule 91, 14.05.2025]41.[Rectified under Rule 91, 14.05.2025]42.[Rectified under Rule 91, 14.05.2025]43.[Rectified under Rule 91, 14.05.2025]