Volatile material dispenser

Abstract

A volatile material dispenser includes a base and a bracket assembly coupled with the base. A fan and a battery are arranged in the base. The bracket assembly includes a platform, a bracket extending from the platform, and a manifold extending from the bracket. The volatile material dispenser also includes a cap and an air deflector. The cover is located on the base and defines a chimney. The air deflector is located between the cover and the manifold. The air deflector is configured to direct air out of the chimney.

Description

[0001] Cross - reference to related applications

[0002] This application claims priority to U.S. Patent Application No. 17 / 878,629, filed on August 1, 2022, the entire content of which is incorporated herein by reference. Technical field

[0003] The present disclosure generally relates to volatile substance dispensers for dispensing volatile substances, and more particularly, to a volatile substance dispenser having a piezoelectric element and an illumination assembly. Background art

[0004] A variety of volatile substance dispensers are known in the art, most of which deliver fragrance to the surrounding environment through various different mechanisms. For example, some dispensers spray volatiles containing fragrance into the surrounding environment, while other dispensers allow volatiles containing fragrance to evaporate into the surrounding environment. Such volatile substance dispensers typically include a housing into which a refill is inserted. The refill generally includes a container for holding the volatile substance, and the volatile substance can include various components such as aromatic chemicals, water, solvents, surfactants, alcohols, and / or other components. Some refills include a wick that contacts the volatile substance and extends out of the refill to carry the volatile substance out of the refill. Other refills include a gel - like substance that diffuses through a semi - permeable membrane. Regardless of the type of refill, the refill can be inserted into a volatile substance dispenser that has a heater, a piezoelectric element, an aerosol actuator, and / or any other diffusion element that can help deliver the volatile substance.

[0005] However, many prior - art dispensers are unable to dispense volatile substances in a uniform or precise dosage manner. In addition, many dispensers fail to include visual feedback to the user regarding the amount or quantity of volatiles that the volatile substance dispenser is dispensing or has dispensed. Accordingly, there is a need for a volatile substance dispenser that has a mechanism for precisely dispersing volatile substances while providing adjustable visual feedback to the user. Summary of the invention

[0006] According to a first aspect, a volatile substance dispenser includes: a base and a bracket assembly coupled to the base. The base includes a fan and a battery. The bracket assembly includes a platform, a bracket extending from the platform, and a manifold extending from the bracket. The volatile substance dispenser further includes a cover and an air deflector. The cover is located on the base and defines a chimney. The air deflector is located between the cover and the manifold. The air deflector is configured to direct air out of the chimney.

[0007] According to some embodiments, the air deflector includes a frustoconical shape and includes an air wall. In some embodiments, a plurality of air channels are defined by the air wall of the air deflector and the side surface of the manifold. In some embodiments, the air wall extends around the manifold. In some embodiments, the base further includes a plurality of vents. In some embodiments, the base further includes an air isolator having an air inlet hole. In some embodiments, the air isolator is located between the fan and the battery. In some embodiments, during use, air is configured to flow into the plurality of vents, through the air inlet hole of the air isolator, and out of the chimney.

[0008] According to another aspect, a volatile substance dispenser includes: a base and a bracket assembly coupled to the base. The base includes a fan and a battery. The base defines a lower portion including a plurality of vents. The bracket assembly includes a manifold, and the manifold includes a piezoelectric assembly. The volatile substance dispenser further includes a cover and an air deflector. The cover defines a chimney, and the air deflector is located within the cover. During use, air is configured to flow through the plurality of vents and out of the chimney.

[0009] In some embodiments, the base further includes an air isolator and a sealed engine. In some embodiments, the sealed engine is waterproof. In some embodiments, the sealed engine is located above the fan and below the platform of the bracket assembly. In some embodiments, a printed circuit board and a plurality of light emitting diodes are located within the sealed engine. In some embodiments, the piezoelectric assembly is connected to the printed circuit board. In some embodiments, the fan includes a motor located within the sealed engine. In some embodiments, the volatile substance dispenser is configured to be used in an outdoor environment.

[0010] According to another aspect, a volatile substance dispenser includes: a base and a bracket assembly coupled to the base. The bracket assembly includes a manifold. The manifold includes a piezoelectric assembly. The volatile substance dispenser further includes a fan and a refill having a core. The refill is removably coupled to the manifold and includes a volatile substance therein. The volatile substance dispenser further includes a cover located around the manifold and the refill. The cover defines a chimney. The manifold includes an annular wall. The annular wall defines a channel. The annular wall is coaxial with the chimney and the piezoelectric assembly. During use, the volatile plume is configured to flow through the channel and the chimney through the piezoelectric assembly.

[0011] In some embodiments, when the refill is coupled to the manifold, the core of the refill contacts the piezoelectric assembly. In some embodiments, the volatile substance dispenser further includes an air deflector fixed to the cover and the manifold. In some embodiments, the air deflector is configured to direct air out of the chimney and around the volatile plume. In some embodiments, the base further includes a plurality of vents and an air isolator. Description of the Drawings

[0012] Figure 1Front, top, and right isometric views of the volatile substance dispenser according to the present disclosure;

[0013] Figure 2 is Figure 1 front elevation view of the volatile substance dispenser;

[0014] Figure 3 is Figure 1 rear elevation view of the volatile substance dispenser;

[0015] Figure 4 is Figure 1 left elevation view of the volatile substance dispenser;

[0016] Figure 5 is Figure 1 top view of the volatile substance dispenser;

[0017] Figure 6 is Figure 1 bottom view of the volatile substance dispenser;

[0018] Figure 7 is Figure 1 front, top, and right isometric views of the internal bracket and base of the volatile substance dispenser, with the cover removed for clarity;

[0019] Figure 8 is Figure 7 left elevation view of the bracket and base;

[0020] Figure 9 is Figure 7 front elevation view of the bracket and base;

[0021] Figure 10 is with Figure 1 front, top, and right isometric views of the refill used with the volatile substance dispenser;

[0022] Figure 11 is Figure 10 front, top, and right isometric views of the refill with the lid removed;

[0023] Figure 12 is along Figure 11 side cross-sectional view of the refill taken along line 12-12;

[0024] Figure 13 is along Figure 5 cross-sectional view of the volatile substance dispenser taken along line 13-13;

[0025] Figure 14 is along Figure 5 cross-sectional view of the volatile substance dispenser taken along line 14-14;

[0026] Figure 15 Is Figure 1 Front, top, and left isometric views of various electrical components of a volatile substance dispenser, including a piezoelectric element;

[0027] Figure 16 Is Figure 15 Top view of the printed circuit board and some electrical components shown;

[0028] Figure 17 Is Figure 16 Front, top, and right isometric views of the piezoelectric element shown;

[0029] Figure 18A Is a cross-sectional view of the piezoelectric element taken along line 18-18 of Figure 17 ;

[0030] Figure 18B Is a schematic diagram of a circular hole array of the piezoelectric element taken along line Figure 17 ;

[0031] Figure 18C Is a schematic diagram of an elliptical hole array of the piezoelectric element taken along line Figure 17 ;

[0032] Figure 19 Is Figure 14 Detailed view of the upper part of the internal bracket;

[0033] Figure 20 Is Figure 19 Detailed view of the upper part of the internal bracket, where Figure 10 The refill is inserted into the manifold of the bracket;

[0034] Figure 21 Is a graph showing the various test results of springs with different thicknesses;

[0035] Figure 22 Is a graph showing the results of various tests comparing the piezoelectric element and the spring force with the resulting fragrance output;

[0036] Figure 23 Is Figure 7 Front, right, and top views of the bracket and the base, where Figure 10 The refill is inserted into its head cavity;

[0037] Figure 24 Is Figure 23 Front, right, and top views of the bracket and the base, where the refill has been inserted into the engagement configuration;

[0038] Figure 25 Is Figure 23 Front, right, and top views of the bracket and the base, where the cover is engaged with the base;

[0039] Figure 26 is a top, front, and left isometric view of a volatile substance dispenser according to another embodiment of the present disclosure;

[0040] Figure 27 is Figure 26 a front elevation view of the volatile substance dispenser;

[0041] Figure 28 is Figure 26 a rear elevation view of the volatile substance dispenser;

[0042] Figure 29 is Figure 26 a right side elevation view of the volatile substance dispenser;

[0043] Figure 30 is Figure 26 a top plan view of the volatile substance dispenser;

[0044] Figure 31 is Figure 26 a bottom plan view of the volatile substance dispenser;

[0045] Figure 32 is Figure 26 a front, top, and right isometric view of the internal support assembly and base of the volatile substance dispenser, with the cover removed for clarity;

[0046] Figure 33 is Figure 32 a left side elevation view of the support and base;

[0047] Figure 34 is Figure 32 a front elevation view of the support and base;

[0048] Figure 35 is Figure 32 a partial, enlarged, front, top, and right isometric view of the support, with the sidewalls and lower portion of the base removed for clarity;

[0049] Figure 36 is a cross-sectional view of the volatile substance dispenser taken along line Figure 30 36-36;

[0050] Figure 37 is a cross-sectional view of the volatile substance dispenser taken along line Figure 30 37-37;

[0051] Figure 38 is a cross-sectional view of the base of the volatile substance dispenser taken along line Figure 30 38-38, which is an enlarged isometric cross-sectional view;

[0052] Figure 39 is associated withFigure 26 Front, top, and left isometric views of a refill for use with a volatile substance dispenser;

[0053] Figure 40 is Figure 26 Front, top, and right isometric views of various electrical components of a volatile substance dispenser, including a piezoelectric element; and

[0054] Figure 41 is Figure 26 Detailed view of the upper part of a volatile substance dispenser, where Figure 39 a refill is inserted into the manifold of a holder. DETAILED DESCRIPTION

[0055] The present disclosure relates to a volatile substance dispenser or diffuser and a method of dispensing a volatile substance therefrom. While the present disclosure may be embodied in many different forms, several specific embodiments are discussed herein, and it should be understood that the present disclosure is only considered an example of the principles of the present disclosure and is not intended to limit the present disclosure to the embodiments shown. Throughout the disclosure, the terms "about" and "approximately" refer to a range of values of ±5% of the value preceding each term. As described herein, all ranges disclosed in this application include the outer boundaries of the range.

[0056] The volatile substance dispenser or diffuser disclosed herein is a multi-sensory device that uses a piezoelectric engine to generate micro-droplets of a liquid fragrance and eject them into the surrounding environment. The volatile substance dispenser is configured to receive a replaceable perfume oil bottle or refill. The dispenser is further configured to operate at a low voltage and has a fragrance intensity selector that provides visual feedback to the user in the form of illumination. The dispenser includes a cover, a holder assembly, and a base that together house control buttons, a power connector, a light, and a piezoelectric engine. The cover is primarily decorative and provides a light-transmissive mask. Before first use of the volatile substance dispenser, the cover is removed to insert the perfume oil bottle or refill into the holder assembly.

[0057] In addition, the volatile substance dispenser disclosed herein includes an improvement to the piezoelectric plate-core interface that has been found through testing to improve system performance and consistency. Specifically, testing has revealed variations in sensitivity and consistency based on the downward contact force at the top of the piezoelectric plate and the core. For example, a constant force can provide more consistent output and minimized variance. Through testing, it has also been determined that differences in force can cause variations in the output rate due to changes in the loading conditions on the piezoelectric plate. It has been found that applying too high a downward load on the piezoelectric plate inhibits the amplitude of mechanical vibration of the piezoelectric plate, which minimizes droplet output. Conversely, it has been found that too light a downward force limits the interface contact between the plate and the core, which has been found to produce a high undamped output. This may be because in such a case, the contact between the piezoelectric plate and the core may completely disappear.

[0058] Referring now to the drawings, Figures 1 to 7 a volatile dispenser 50 embodying aspects of the present disclosure is described. The dispenser 50 may be adapted to receive a refill 52 (refer to Figures 10 to 12 ), and dispense a volatile substance in the form of water and / or aromatic oil from the refill 52. Specifically referring to Figure 1 and Figure 2 , the dispenser 50 includes a cover or lid 54 and a base 56. The cover 54 defines a lower edge 58 that contacts an upper edge 60 of the base 56. Sidewalls 62 of the cover 54 extend upwardly from the lower edge 58 to a lip 64 at an upper end 66 of the cover 54. In cross-section, the sidewalls 62 of the cover 54 define a frustoconical lower portion 68 and a splined upper portion 70. A plurality of ridges or design features 72 are provided along an outer surface 74 of the cover 54. Any number of design features 72 may be provided along the outer surface 74 of the cover 54. The lower portion 68 and the upper portion 70 of the cover 54 intersect at a circular shoulder 76, and the upper portion 70 extends from the circular shoulder 76 toward a chimney 78 that is centered about a central longitudinal axis 80 of the dispenser 50 ( Figure 2 ). The chimney 78 is defined as the portion inside the lip 64. In some embodiments, the cover 54 and the base 56 include polypropylene (PP), however, the cover 54 and the base 56 may include a variety of polymeric materials.

[0059] Still referring to Figure 1 and Figure 2 , the sidewalls 62 extend along the upper portion 70 from the shoulder 76 toward the lip 64. Referring to Figure 1 , a flange 84 of the cover 54 extends downwardly from the lip 64 toward the longitudinal axis 80 and into the chimney 78. The angle at which the flange 84 extends downwardly from the lip 64 is best illustrated in the cross-sectional views of Figure 13 and Figure 14 . Specifically referring to Figure 2 , although the chimney 78 may define a variety of diameters, the chimney 78 is shown as having a diameter D1 that is approximately 30% of the widest diameter D2 of the cover 54 taken at its lower edge 58. In some embodiments, the diameter D1 may be between approximately 5% and approximately 60% of the diameter D2, or between approximately 10% and approximately 45% of the diameter D2, or between approximately 15% and approximately 35% of the diameter D2. In some embodiments, the diameter D1 is approximately 10%, or approximately 20%, or approximately 30%, or approximately 40% or approximately 50% of the diameter D2.

[0060] Referring again to Figure 1 and Figure 2, the base 56 also defines side walls 90 that extend downwardly from the upper edge 60 of the base 56 to its bottom wall 92. A plurality of feet 94 extend downwardly from the bottom wall 92 and are arranged to permit the dispenser 50 to be placed on a flat surface (not shown). The side walls 90 of the base 56 are generally curved and extend downwardly and inwardly from the upper edge 60, toward the longitudinal axis 80. The side walls 90 of the base 56 may define a radius of curvature along a portion of the side walls 90. Additionally, a first button 96, a second button 98, and a third button 100 extend outwardly from the base 56, away from the longitudinal axis 80. The first button 96, the second button 98, and the third button 100 can be used for various purposes and can have a variety of different functions, as described below.

[0061] Referring Figure 2 , the first button 96, the second button 98, and the third button 100 can be disposed along the base 56 of the dispenser 50. The first button 96 can be a power button that permits a user to turn the dispenser 50 on and off. The second button 98 can be a scent intensity adjustment button that permits the user to cycle through the settings of the dispenser 50. For example, the user can switch between a low setting, a medium setting, and a high setting. A plurality of light indicators 102 can be visible through the base 56 adjacent to or below the second button 98. The light indicators 102 can provide visual feedback to the user regarding the concentration or intensity of the selected setting. In the illustrated embodiment, there are three light indicators 102. One of the light indicators 102 can be illuminated when the low setting is selected; two of the light indicators 102 can be illuminated when the medium setting is selected; and three of the light indicators 102 can be illuminated when the high setting is selected. The third button 100 can be a lighting button that cycles through various light brightness settings and color settings when the user presses the button.

[0062] The user can select options for the light and / or color according to personal preferences. Additionally, in some embodiments, after being turned on by the first button 96, the dispenser 50 can operate for a predetermined amount of time, such as 8 hours, and can then enter a sleep mode for a predetermined amount of time, such as 16 hours. The dispenser 50 can repeat this cycle every 24 hours unless the user manually turns it off via the first button 96. In some embodiments, the dispenser 50 includes an auto-off function that deactivates the dispenser 50 after a specific period of time (e.g., after seven 24-hour cycles, i.e., one week later). In some embodiments, a limit switch (not shown) can be disposed along the base 56 that permits the dispenser 50 to be activated only when the cover 54 is engaged with the base 56.

[0063] Now referring Figure 3, showing a rear view of the dispenser 50. As shown in the rear view, the dispenser 50 also includes a low-voltage socket or port 104 for receiving a low-voltage electrical connector of a low-voltage wire, such as a USB wire (not shown). In some embodiments, electrical pins, wires, or other suitable electrical connectors may be electrically coupled to the dispenser 50 to allow power to be provided to the dispenser 50. Figure 4 Showing the left side of the dispenser 50. Buttons 96, 98, 100 and port 104 extend outward from the sidewall 90 of the base 56 and interrupt the sidewall 90. Thus, the sidewall 90 of the base is rotationally symmetric, but the entire base 56 is symmetric about a plane 13-13 (see Figure 5 ) that bisects the second button 98 and the port 104. Additional features may be provided within or along the cover 54 and / or the base 56. Additionally, an additional body defining one or more sidewalls (not shown) may be provided between, above, or below the base 56 and the cover 54.

[0064] Now referring to Figure 5 , showing a top view of the dispenser 50. The chimney 78 is shown in more detail and is centered along the longitudinal axis 80. The piezoelectric assembly 110 is shown within the chimney 78 and is also centered along the longitudinal axis 80. The annular piezoelectric element 112 can also be seen through the chimney 78, and the piezoelectric element 112 defines the circular edge of the piezoelectric assembly 110. The piezoelectric element 112 includes a central hole 114 through which the volatile liquid in the refill is dispersed when the dispenser 50 is activated. When the dispenser 50 is activated, the volatile stream is dispensed through the chimney 78 of the cover 54 and exits the dispenser 50, as discussed in more detail below.

[0065] Now referring to Figure 6 , the bottom wall 92 of the base 56 is shown in more detail. A plurality of feet 94 extend from the bottom wall 92. The plurality of feet 94 are arranged in a generally circular shape with alternating circular and elongated feet 94. Alternative configurations or shapes of the feet 94 can be envisioned, and in some embodiments, additional structures may be included in addition to the feet 94. Additionally, in some embodiments, there are no feet 94 or other types of stabilizing mechanisms for holding the dispenser 50 in an upright configuration. As Figure 6 further shown in, the second button 98 and the port 104 are offset 180 degrees from each other about the longitudinal axis 80. The first button 96, the second button 98, and the third button 100 are also equidistantly spaced from each other. Alternative configurations of the port 104 and the buttons 96, 98, 100 can also be envisioned.

[0066] Now referring to Figures 7 to 9, showing the support assembly 116 of the dispenser 50, with the cover 54 removed for clarity. The support assembly 116 includes a platform 118, a bracket 120, a refill chassis 122, and a crown 124. The refill chassis 122 and the crown 124 define a manifold 126 that holds the refill 52 and the piezoelectric assembly 110. The platform 118 extends upward from the base 56 and is embedded from its sidewall 90. A plurality of retaining protrusions 128 extend outward from the platform 118 and serve to engage the cover 54 when the cover 54 is coupled to the base 56. The retaining protrusions 128 are a form of retaining mechanism that couples the cover 54 to the base 56. Alternative retaining mechanisms may include elements that result in a snap fit, friction fit, or interference fit. The platform 118 is permanently coupled to the base 56 by a plurality of fasteners 130 (see Figure 13 ), the passages of which are covered by the feet 94 after assembly. The fasteners 130 are a form of fastening mechanism, additional examples of which include rivets, nails, bolts, or cables.

[0067] The platform 118 defines an outer cylindrical surface 132 that extends upward to a corner 134. An inclined surface 136 extends inward and downward from the corner 134, toward a well 138 defined within a central portion 140 of the platform 118. A groove 142 is defined within the inclined surface 136 along the front portion 144 of the platform 118. The groove 142 may be included to assist in inserting the refill 52 into an operable configuration. The well 138 may include additional features that help hold the refill 52 or other components. For example, the size and shape of the well 138 of the platform 118 may be designed to hold a lid 146 of the refill 52 after the lid 146 has been removed from the refill 52 (see Figure 10 ).

[0068] Still referring to Figures 7 to 9 , the support assembly 116 includes a bracket 120 that extends upward from the platform 118 along its rear portion 148. The support assembly 116 includes an integral piece that extends upward from the platform 118 to the manifold 126, which extends inward and is aligned with the longitudinal axis 80. The elements of the support assembly 116 may also include polypropylene or other types of polymeric materials. As described above, the manifold 126 includes a crown 124 and a refill chassis 122 that extends downward from the crown 124. The chassis 122 includes a first protrusion and a second protrusion 150 that hang downward to hold an annular edge 152 of the refill 52 (see Figure 11 ). As will be discussed in more detail below, the first protrusion and the second protrusion 150 may be formed to bend outward until the edge 152 of the refill engages the protrusions 150 when the refill 52 is inserted laterally into the chassis 122.

[0069] The user can remove the refill 52 from the protrusion 150 by grasping the refill 52 and pulling it downward horizontally. In some embodiments, the force required to insert and remove the refill 52 is low enough to simply allow horizontal insertion and removal. However, in some embodiments, the refill 52 can be removed by squeezing the protrusion 150 to deflect the protrusion 150 outward, thereby releasing the engagement of the edge 152 therewith. In some embodiments, the refill 52 can be disengaged by rotating the refill 52 such that the threads 154 (see Figure 11 ) allow the refill to rotate and translate downward, away from the crown 124, in order to be removed from the manifold 126. Alternative removal mechanisms can be implemented, such as one or more buttons (not shown) that can be pressed to release the refill 52 from the chassis 122.

[0070] Continuing to refer to Figures 7 to 9 , the crown 124 extends upward from the chassis 122 and defines a generally frustoconical side surface 156 that terminates at a top surface 158. A plurality of ribs 160 are radially arranged along the side surface 156, which can be formed to facilitate physical engagement with the bottom surface 162 of the cover 54 (see Figure 13 ). The ribs 160 are spaced apart about the longitudinal axis 80. A cylindrical wall 164 extends upward from the top surface 158 of the crown 124, and the center of the cylindrical wall 164 is coaxial with the longitudinal axis 80. The cylindrical wall 164 is also coaxial with the chimney 78 defined by the cover 54. The cylindrical wall 164 is aligned with the second button 98 and the port 104, i.e., the plane 13-13 (see Figure 5 ) extends through the entire cylindrical wall 164, the second button 98, and the port 104. Despite the design feature 72, the cover 54 generally includes radial symmetry, and the platform 118, the bracket 120, and the manifold 126 can be characterized as being symmetric about the plane 13-13, which intersects the second button 98 and extends through the longitudinal axis 80.

[0071] Now referring to Figures 10 to 12 , the refill 52 is shown in more detail. The refill 52 includes a lid 146 and a container 170, and the container 170 defines a body 172, a shoulder 174, and a head 176. The body 172 includes a cylindrical outer wall 178 that extends upward from its lower wall 180 to the shoulder 174. The head 176 extends upward from the shoulder 174 and defines an end 182. The head 176 is connected to the body 172 at the shoulder 174. The refill 52 also includes a lid 146 that is threadedly coupled to the threads 154 (see Figure 11 and Figure 12 ) disposed along the neck 184 of the refill 52. Referring to Figure 12, the container 170 houses the volatile substance therein, and the container 170 is adapted to be held within the dispenser 50. A wick support or plug 186 is disposed within the neck 184 for securing the wick 188, wherein a first end of the wick 188 is in contact with the volatile substance, and a second end of the wick 188 extends out of the container 170 through the neck 184. In an exemplary embodiment, the wick 188 may be formed of extruded fibers that are bundled together to form a rod shape.

[0072] Still referring to Figure 12 , the wick 188 may be formed of a cord or one or more cotton cords. The wick 188 includes an upper wick 192 and a lower wick 194. The upper wick 192 has different properties from the lower wick 194. However, in some embodiments, the upper wick 192 and the lower wick 188 have the same properties. In a preferred embodiment, the upper wick 192 is flexible and / or fibrous, while the lower wick 194 may be sintered or stiffer than the upper wick 192. The upper wick 192 may have properties that allow the upper wick 192 to deform into the piezoelectric assembly 110. The lower wick 194 includes a lower end 196 that is disposed adjacent to and spaced apart from the lower wall 180, and has an upper end 198 that engages the upper wick 192. The upper wick 192 is nested within a wick cavity 200 at the upper end 198 of the lower wick 194. An upper arcuate or inclined surface 202 surrounds the inner edge of the wick cavity 200. During the assembly of the refill 52, the upper inclined surface 202 may assist in aligning the upper wick 192 within the wick cavity 200. The upper wick 192 is tightly held by the plug 186 and has a distal end 204 that extends upward out of the container 170. The wick 188 may be formed into any suitable shape or of any suitable material. However, the upper wick 192 is preferably more flexible than the lower wick 194. The plug 186 is fixed within the neck 184 of the refill 52 by an interference fit, friction fit, or any other suitable means such that the plug 186 is secured in place within the neck 184.

[0073] Still referring to Figure 12 , a shoulder 174 of the container 170 extends upward to an end 182 of the head 176 and the neck 184. Threads 154 surround the neck 184 and extend outward from the neck. An annular edge 152 also surrounds the end 182, which may be used to engage the refill 52 with the overhanging protrusion 150 of the chassis 122. The lower wall 180 of the refill 52 is generally concave and extends upward, toward the wick 188. Air holes 208 are provided within the plug 186 (see Figure 11) to allow air to enter the cavity 210 of the refill 52 as the liquid (not shown) disperses from the refill 52 into the surrounding atmosphere. Although the refill 52 is specifically shown and described, it is contemplated that any type of refill can be used with the variants of the dispenser described herein. For example, a refill having a flexible container can be used. Additionally, the delivery system (i.e., the wick) can be different from the delivery system described herein, and / or the size and / or shape of the container 170 can be different from the container described herein.

[0074] The volatile substance disposed within the container 170 can be any type of volatile substance suitable for dispensing into the environment. For example, the substance within the container 170 can include cleaners, pesticides, repellents, insect attractants, disinfectants, mildew inhibitors or mold inhibitors, fragrances, sanitizers, air purifiers, aromatherapy fragrances, preservatives, deodorizers, positive aromatic volatiles, air fresheners, odor eliminators, etc., as well as combinations thereof. Additives such as fragrances and / or preservatives can be included in the volatile substance. In fact, any fluid can be provided within the container 170.

[0075] Now referring Figure 13 and Figure 14 to the cross-sectional view of Figure 13 , the base 56 is shown connected to the bracket assembly 116 by a fastener 130. The fastener 130 is disposed within the fastener channel 214, which is covered from view by the leg 94 after the bracket assembly 116 has been secured to the base 56. In the present embodiment, three fasteners 130 secure the base 56 to the bracket assembly 116; however, Figure 13 only a single fastener 130 is shown in the cross-section of

[0076] A printed circuit board (PCB) 216 is shown between the base 56 and the bracket assembly 116. A plurality of light emitting diodes (LEDs) 218 are shown electrically coupled to the PCB 216, and the plurality of LEDs 218 are disposed above the PCB 216. In some embodiments, the plurality of LEDs 218 are disposed above and below the PCB 216. In some embodiments, some of the LEDs 218 are disposed near the front, rear, and sides of the dispenser 50. As described above, depending on the selected settings, the LEDs 218 are intended to emit light through the cover 54, and the settings can vary according to user preferences. The LEDs 218 can alternatively be positioned at any suitable location within the dispenser 50. One or more of the LEDs 218 can indicate that the dispenser 50 is in an on or off state, can provide an alert, and / or can provide any other suitable indicator to the user. As described above, the color and / or brightness of the LEDs 218 can be adjusted according to the desired brightness and / or color of the light emitted through the cover 54.

[0077] For example, when dispenser 50 is in the "low" setting, the first of LEDs 218 can illuminate a first color; when dispenser 50 is in the "medium" setting, the second of LEDs 218 can illuminate a second color; when dispenser 50 is in the "high" setting, the third of LEDs 218 can illuminate a third color. The third LED 218 can emit light on its own in the high setting, or the illumination can be additional such that the first LED 218, the second LED 218, and the third LED 218 all emit light in the high setting, where they can have the same or different colors and / or intensities. Alternatively, the first LED 218 can illuminate when dispenser 50 is inserted but not turned on, and the second LED 218 can illuminate when dispenser 50 is inserted and turned on. Dispenser 50 can include one or more individual openings in cover 54 or a translucent portion of cover 54 to allow the light emitted by each LED 218 to pass through.

[0078] Still referring to Figure 13 , second button 98 is shown as protruding through base 56. Although second button 98 is shown and referred to below, first button 96 and third button 100 have the same settings and functions. Second button 98 is shown adjacent to switch 220, which is operable to adjust between the various settings of dispenser 50. Switch 220 can be a pushbutton switch, which when pressed can cause dispenser 50 to initiate one or more functions, such as turning dispenser 50 on or off, resulting in an adjustable amount of dispensed fragrance, or adjusting the color or brightness of one or more of LEDs 218. Figure 13 The switch 220 visible in Figure 16 is one of the multiple switches 220 visible in

[0079] Although dispenser 50 is disclosed as having a specific switch, those skilled in the art will understand that the dispenser can include any number of switches and / or can include any suitable type of switch, e.g., a timing switch, an on / off switch, a setting switch, a switch that controls another component within the control assembly (such as a heater or a fan), and / or any other suitable switch.

[0080] Still referring to Figure 13, the bracket assembly 116 is shown in cross-section, and the components disposed therein are visible. A wire conduit 222 is shown extending from a terminal 224 disposed along the PCB 216, through the bracket 120, and into the chassis 122. First and second wires 226 are disposed within the wire conduit 222, and the wires 226 are electrically connected to the terminal 224 and the piezoelectric assembly 110, which is disposed within the crown 124 of the bracket assembly 116. The bracket 120 is fixedly coupled to the chassis 122, and the chassis 122 is also fixedly coupled to the crown 124. The bracket 120, the chassis 122, and the crown 124 are all separate components and may be coupled to each other by snap-fit, friction fit, interference fit, adhesive, or other coupling methods. As described above, the bracket 120, the chassis 122, and the crown 124 may all comprise polypropylene or other polymeric materials. The wire 226 is electrically coupled to the piezoelectric assembly 110, which is disposed within the crown 124. A wire conduit guide 228 is further disposed within the bracket 120 and is positioned to hold the wire conduit 222 within the bracket 120. The wire conduit guide 228 may include a horizontal portion having a notch that holds the wire conduit 222 in a static configuration. As Figure 13 Further shown, the piezoelectric assembly 110 is located at a central position along the longitudinal axis 80. Although the bracket 120, the chassis 122, the platform 118, the base 56, and the cover 54 are shown as including polymers, other types of materials may also be considered.

[0081] Still referring to Figure 13 , a plurality of refill fixing ribs 230 are disposed along the interior of the chassis 122 and may be used to guide the neck 184 of the refill 52 upward to a position within the chassis 122 until the protrusion 150 locks into place with the edge 152 along the refill 52. A spring 232 is shown and is used to apply a force to the piezoelectric assembly 110. The spring 232 applies a constant force to the piezoelectric assembly 110 to hold it in a static configuration until the user positions the refill 52 within the chassis 122. When the user inserts the refill 52 into the dispenser 50, the piezoelectric assembly 110 translates upward, causing the spring 232 to compress. The spring 232 defines a spring wire 234 having a wire diameter, which will be further discussed below. Also shown is one of the protrusions 150, which includes an inwardly hanging detent 236 configured to translate outwardly away from the longitudinal axis 80 and snap inwardly when the refill 52 is inserted into the chassis 122 to secure the refill 52 in place within the chassis 122 by engaging the edge 152 (see Figure 20 ). The piezoelectric assembly 110 is disposed above the refill cavity 240 and is configured to receive the distal end 204 of the core 188 when the refill 52 is inserted into the chassis 122.

[0082] Now referring to Figure 14, showing another cross-sectional view of the dispenser 50. The conduit 222 and the wire 226 are shown in cross-section, and the plurality of LEDs 218 are shown disposed above the PCB 216. In addition, additional refill guide ribs 230 are shown, which partially define the profile of the head 176 of the refill 52 and are configured to snugly receive the refill 52 within the chassis 122. The spring 232 includes a top end 242 and a bottom end 244. The piezoelectric assembly 110 is also as shown in Figure 14 and is disposed below the bottom end 244 of the spring 232. The bottom end of the spring 232 may be fixedly attached to the piezoelectric assembly 110 or may be separate but in physical contact with each other.

[0083] The bottom end 244 of the spring 232 is formed to receive the piezoelectric assembly 110, which in turn is formed to receive the upper core 192 when the refill 52 engages therewith. The top end 242 of the spring 232 is wound and fixed to the cylindrical wall 164 of the crown 124. The chassis 122 includes an outer boss 250 that engages an inner boss 252 of the crown 124. The chassis 122 and the crown 124 are snap-fitted together; however, the chassis 122 and the crown 124 may be joined together in another manner, such as by an adhesive, a fastener, an interference fit, or a friction fit. Figure 14 Also clearly shown in is a fastener wall 254 that defines two fastener channels 214 and extends between the bottom wall 92 of the base 56 and the platform 118.

[0084] Referring to Figure 15 , the printed circuit board (PCB) 216, the conduit 222, and the piezoelectric assembly 110 are shown in an isometric view. The controller 246 and the timer 248 are shown schematically along the PCB 216. The controller 246 may be a microcontroller and may be disposed within or along the PCB 216. The controller 246 may also be a separate component electrically coupled to the PCB 216. The timer 248 may further be disposed within or along the PCB 216 or may be a separate component. The timer 248 is used to time when the dispenser 50 is activated, and the controller 246 is operable to receive instructions from the buttons 96, 98, 100 to activate the piezoelectric assembly 110, the timer 248, and / or the LEDs 218. As described above, the PCB 216 is disposed between the base 56 and the platform 118, and for clarity, the base 56 and the platform 118 are removed from the view of Figure 15 .

[0085] In Figure 15The LED 218, button 96, button 98, button 100, switch 220, and wire 226 are clearly shown in the view. The limit switch 256 is also shown, which provides a signal to the controller 246 indicating that the cover 54 has been fixed to the base 56 and the dispenser 50 is not allowed to be started until the cover 54 is fixed to the base 56. In some embodiments, there is no limit switch 256. The terminals 224 are also shown arranged along the PCB 216. Other electrical components, such as resistors, transistors, capacitors, processors, controllers, and relays, may also be arranged along or within the PCB 216. In some embodiments, a plurality of batteries (not shown) may be encapsulated in a housing (not shown) and electrically connected to the PCB 216 to provide power to the PCB 216 and other electrical components of the dispenser 50.

[0086] Reference Figure 16 , a top view of the PCB 216 is shown, in which the wire conduit 222 and the piezoelectric assembly 110 have been removed for clarity. The switch 220 is shown in more detail and is shown to be located near each of the first button 96, second button 98, and third button 100. In addition, each of the three sets of three LEDs 218 is shown in detail in a triangular configuration along the PCB 216. Different sets of LEDs 218 may emit different colors of light or may emit the same color of light. In addition, the LEDs 218 may have the same intensity or different intensities from each other. The port 104 is further shown along the PCB 216 at the opposite end of the second button 98. The PCB 216 has a generally circular contour. However, the PCB 216 may have any contour that allows it to be firmly held within the contour of the cover 54.

[0087] Now reference Figure 17 , the piezoelectric assembly 110, and the upper ends of the wire 226 and the wire conduit 222 are shown in more detail. The piezoelectric assembly 110 includes a piezoelectric plate 260 and a piezoelectric element 112 that surrounds the periphery of the upper surface 262 of the piezoelectric plate 260. The piezoelectric plate may include stainless steel, which may be SUS 316L steel. When the piezoelectric element 112 is energized, the piezoelectric plate 260 expands and contracts, thereby releasing volatiles into the surrounding environment. The piezoelectric plate 260 also includes a generally concave and circular central dome 264. The piezoelectric assembly 110 includes a hole portion 266, at least a portion of which extends along the central dome 264. In an exemplary embodiment, the hole portion 266 of the piezoelectric plate 260 includes a plurality of orifices 268, the diameter or at least one width dimension of which is between about 3 microns and about 9 microns, or between about 5 microns and 7 microns, or about 6.5 microns. In other exemplary embodiments, the piezoelectric plate 260 includes a plurality of orifices having a diameter between about 3 microns and about 5 microns.

[0088] Reference Figure 17 and Figure 18A , when in use, the piezoelectric assembly 110 is located near the core 188. In an exemplary embodiment, the piezoelectric element 112 can be formed in a ring shape and can be made of ceramic. In an alternative exemplary embodiment, the piezoelectric assembly 110 can be formed in any suitable shape and / or can be made of any suitable material having piezoelectric properties, and it can cause the material to change in size in response to an applied electric field. Illustrative examples of suitable materials include, but are not limited to, lead zirconate titanate (PZT) or lead metaniobate (PN). Although specific piezoelectric elements are described, any actuator can be utilized, for example, a piezoelectric vibrating mesh actuator, a piezoelectric standing wave actuator, a piezoelectric vibrating needle, or any other suitable piezoelectric actuator.

[0089] Reference Figure 18B and Figure 18C , a plurality of orifices 268 along the piezoelectric plate 260 can define an essentially circular array 269. As shown at 266 in the figure, the array 269 of orifices can be defined along the entire dome 264. As Figure 18C shown, the array 269 can alternatively be arranged only along a portion of the dome 264, or can extend beyond the dome 264. The array 269 can have alternative configurations and can be in the shape of a triangle, square, ellipse, or polygon. Additionally, the orifices 268 can be circular ( Figure 18B ), rectangular or square ( Figure 18C ), or other shapes. It should be noted that the orifices 268 depicted in the schematic diagrams of Figure 18B and Figure 18C do not represent the actual size or actual number of the orifices 268. Instead, the orifices 268 can define the dimensions described herein.

[0090] In some embodiments, the diameter or at least one width dimension of the array 269 is between about 0.5 mm and about 10.0 mm, or between about 1.0 mm and about 9.0 mm, or between about 2.0 mm and about 8.0 mm, or between about 3.0 mm and about 7.0 mm. Referring again to Figure 12, the core diameter DW and the array diameter DA (see FIG. 18) can define the ratio of DW / DA to be between about 1.0 and about 3.0. In some embodiments, the ratio is about 1.1. In some embodiments, the core diameter DW is between about 3.0 mm and about 5.5 mm, or between about 3.5 mm and about 4.0 mm, or about 3.8 mm. In some embodiments, the array diameter DA is between about 3.0 mm and about 6.0 mm, or between about 4.0 mm and about 5.0 mm, or about 4.5 mm. The ratio of the core diameter may affect the accuracy and consistency of the volatile plume emitted by the dispenser 50. For example, it has been found that a ratio DW / DA of about 1.1 can produce a repeatable and accurate volatile dispersion from the dispenser 50. In some embodiments, the array 269 can include about 100 to about 400 orifices, or about 150 to about 350 orifices, or about 316 orifices, or about 200 orifices.

[0091] Now refer to Figure 19 and Figure 20 , which shows a detailed view of the upper end of the bracket assembly 116, with the refill not inserted and inserted, respectively. Refer to Figure 19 , which shows the piezoelectric assembly 110 in more detail. In some embodiments, a soft material, such as a loading foam, can be provided along the bottom side of the piezoelectric assembly 110. Additional materials can be provided along the bottom side of the piezoelectric assembly 110 to contribute to the accuracy or consistency of the volatile plume generated when the dispenser 50 is activated. Additional materials can also be provided to enhance or reduce the damping effect that may be caused by the spring 232, the core 188, and / or the piezoelectric plate 260.

[0092] The top end 242 of the spring 232 is shown wound around the cylindrical wall 164, while the bottom end 244 of the spring 232 is shown in contact with the piezoelectric assembly 110 and applying a force to the piezoelectric assembly 110. The chassis 122 also includes a piezoelectric platform 270, which is integral with the chassis 122 and defines a surface for fixing the piezoelectric assembly 110. The piezoelectric platform 270 holds the piezoelectric assembly 110 in place and prevents the displacement of the piezoelectric assembly 110 from exceeding the piezoelectric platform 270. The piezoelectric platform 270 is generally circular and includes an orifice 272 at its center, which allows the distal end 204 of the core 188 to physically contact the piezoelectric assembly 110 when inserted into the chassis 122. The spring 232 is positioned to provide a reaction force against the refill 52 when the refill 52 has been inserted into the chassis 122. As described below, when the core 188 engages with the piezoelectric assembly 110, the spring 232 is compressed, and the piezoelectric assembly 110 is displaced a distance X above the piezoelectric platform 270. This displacement will be described in more detail below.

[0093] Refer to Figure 20, the refill 52 is shown as having been inserted into the manifold 126. Since the refill 52 has been inserted into the refill cavity 240 of the chassis 122, the spring 232 has been compressed, and thus, the spring 232 is shown in a compressed configuration. Still referring to Figure 20 , the edge 152 of the refill 52 is also shown as engaging the detent 236 of the protrusion 150, and the distal end 204 of the core 188 is shown as being in physical contact with the lower surface 276 of the piezoelectric assembly 110 (see FIG. 18). Figure 20 The compression of the spring 232 shown in is the result of the size and type of spring used in the dispenser 50, which can be selected based on various factors, as discussed below. Except that the spring 232 has been compressed, the piezoelectric assembly 110 has been translated upward due to the force applied by the core 232, and the detent 236 of the protrusion 150 has engaged the edge 152 of the refill 52, no other elements of the manifold 126 move or are actuated when the refill 52 is inserted into the manifold 126. Figure 20 The refill 52 is shown in an operating state, in which the dispenser 50 can be activated to dispense volatiles by providing electrical pulses to the piezoelectric assembly 110.

[0094] In an exemplary embodiment, as described above, an absorbent material (not shown) can be included between the core 188 and the piezoelectric assembly 110. The absorbent material can be felt and / or lint. In other exemplary embodiments, the absorbent material can be formed of a velvet pad, cotton cloth, chenille yarn, chenille fabric, polyester cloth, paper towel, synthetic cloth, synthetic nonwoven material, cotton ball or cotton swab, combinations thereof, or other suitable absorbent materials. The absorbent material can be a component of the atomizer assembly or can be attached to or otherwise in communication with the core 188 of the refill 52.

[0095] During operation, the piezoelectric assembly 110 is actuated continuously or intermittently to dispense volatile substances. More specifically, an oscillating electric field is applied to the piezoelectric element 112, which causes the piezoelectric plate 260 to expand and contract in the radial direction. The expansion and contraction cause the piezoelectric plate 260 to vibrate in the axial direction (along the longitudinal axis of the dispenser 50), forcing the volatile substances retained within the orifice of the piezoelectric plate 260 away from the piezoelectric assembly 110, through the channel 280 defined by the cylindrical wall 164, and through the chimney 78 of the cover 54.

[0096] Referring to Figure 21In the graph, three sets of independent springs were tested as spring 232 in the dispenser 50 described above, and the results are shown in the graph. The three sets of springs include a spring wire 234 with a diameter of 0.50 mm, a spring with a diameter of 0.55 mm, and a spring with a diameter of 0.60 mm. The graph shows the spring force measured in Newtons (N) versus the spring compression distance measured in millimeters (mm). The spring compression distance is the aforementioned distance X, that is, the distance between the piezoelectric platform 270 and the piezoelectric assembly 110 after the core 188 translates the piezoelectric assembly 110 upward. The graph further illustrates the minimum, average, and maximum values for each of the three springs. The test involved repeatedly compressing the springs from 1.0 mm to 8.0 mm while recording the resulting force output (N). Although the three springs with different diameters (i.e., 0.50 mm, 0.55 mm, and 0.60 mm) achieved different results, the results show that at a compression of 7.0 mm, a non-linear increase in the measured spring force can be seen for each of the three springs.

[0097] In some embodiments, the spring 232 can have an uncompressed height between about 7 mm and about 20 mm, or between about 10 mm and about 17 mm, or about 13 mm. Additionally, in some embodiments, the spring 232 can have between about 2 turns and about 10 turns, or between about 3 turns and about 7 turns, or about 4.5 turns. In a preferred embodiment, the spring 232 has a spring wire diameter of about 0.6 mm, an uncompressed height of about 13 mm, and includes about 4.5 turns.

[0098] Now referring to Figure 22 the graph, which shows the spring force measured in Newtons (N) versus the fragrance output measured in milligrams per cycle (mg / cycle). The graph shows the Figure 21 test results shown in. The test results show that when the spring produces a lower compression force on the piezoelectric plate 260, the dispenser 50 emits more fragrance. The fragrance emission pattern can be simplified into a first linear region 284 and a second linear region 286. The first region 284 occurs between 0.6 N and 0.9 N and has an approximate slope of -25 mg / cycle / N. The second region 286 occurs between 0.9 N and 2.0 N and has an approximate slope of -8.33 mg / cycle / N. The results show that the fragrance device emits more fragrance when subjected to a lower spring force. Therefore, depending on the desired output range, a specific spring can be determined for use with the dispenser 50. To this end, if it is desired to achieve a fragrance output within the first linear region 284, a 0.50 mm or 0.55 mm spring can be used; if it is desired to achieve a fragrance output within the second linear region 286, a 0.60 mm spring can be used.

[0099] Based on testing, it was determined that having an upper core 192 of a more flexible material results in less displacement of the spring 232 that applies force to the piezoelectric assembly 110, thereby resulting in a more predictable dispersion of the volatiles. When operating within the linear region, the variability of the dispensed plume is more predictable, while when the force displacement of the spring 232 is non-linear, the variability of the release rate increases significantly. It was also found that the magnitude of the force exerted by the spring 232 on the piezoelectric assembly 110 is directly related to the release rate of the volatiles. The smaller the force, the more times the piezoelectric assembly 110 bounces within the channel 280.

[0100] Reference Figures 23 to 25 , a method of inserting the refill 52 into the holder assembly 116 and assembling the dispenser 50 is described. Reference Figure 23 , the refill 52 is positioned such that its head 176 is inserted into the manifold 126. The lower wall 180 of the refill 52 slides through the slot 142 of the platform 118, and the refill 52 is moved upward such that the head 176 is inserted into the manifold 126. Reference Figure 24 , once the edge 152 of the refill 52 engages the detent 236 of the protrusion 150, the refill 52 can be characterized as being fixed within the manifold 126. The lid 146 of the refill 52 can be inserted into the receiving cavity 138 to securely hold the lid 146 when using the refill 52. Reference Figure 25 , the cover 54 is aligned with the base 56 and rotated until the protrusion 128 along the base 56 engages the feature along the bottom surface 162 of the cover 54. The cover 54 can alternatively be engaged with the base 56 in another manner. Once the cover 54 is coupled to the base 56, one end of a power cord (not shown) is inserted into the port 104 and the other end is inserted into a power source, such as a power adapter, laptop, or other low voltage socket.

[0101] Still referring to Figure 25 , the first button 96 is the power button, the second button 98 is the fragrance intensity button, and the third button 100 is the light button. The first button 96 can be pressed once to turn on the dispenser. Once the first button 96 is pressed, the dispenser 50 will start dispensing the fragrance. The second button 98 and the third button 100 can be pressed to personalize the preferences for the fragrance intensity and / or the lighting scheme. During the operation of the dispenser 50, it is desirable to keep the core 188 in contact with the piezoelectric plate 260. If the core 188 is not in contact with the piezoelectric plate 260, especially in water-based aromatic volatiles, the dispenser 50 may not function properly and / or may not dispense any volatiles at all.

[0102] Reference Figures 26 to 41 , similar reference numerals are used in an alternative embodiment of the volatile dispenser 350. Similar to the dispenser 50, the dispenser 350 can be adapted to accommodate a refill 352 (see Figure 39), and dispense volatile substances in the form of water and / or aromatic oils from the refill 352. In some embodiments, the dispenser 350 can dispense pest control volatile substances from the refill 352. Specifically refer to Figure 26 and Figure 27 , the dispenser 350 includes a cover or lid 354 and a base 356. The cover 354 defines a lower edge 358 that interfaces with the upper edge 360 of the base 356. The sidewall 362 of the cover 354 extends upward from the lower edge 358 to a rounded corner 364 at the upper end 366 of the cover 354. The sidewall 362 of the cover 354 defines a splined lower portion 368 and a frustoconical upper portion 370 that terminates at a lip 372. As Figure 27 shown, the rounded corner 364 defines the boundary between the splined lower portion 368 and the frustoconical upper portion 370. The cover 354 also includes a chimney 380 centered about the central longitudinal axis 80 (see Figure 27 ). As described herein, the chimney 380 is defined as the portion inside the lip 372. In some embodiments, similar to the dispenser 50, the cover 354 and the base 356 can include polypropylene (PP), however, the cover 354 and the base 356 can include a variety of polymeric materials. In some embodiments, the cover 354 can be transparent or translucent.

[0103] Still referring to Figure 26 and 27 , the frustoconical upper portion 370 of the cover 354 extends upward and away from the rounded corner 364. In other words, the frustoconical upper portion 370 extends upward and toward the longitudinal axis 80. Specifically refer to Figure 27 , although the chimney 380 can define various diameters, the illustrated chimney 380 has a diameter D3 that is approximately 33% of the widest diameter D4 taken at the lower edge 358 of the cover 354. In some embodiments, the diameter D3 can be between approximately 5% and approximately 70% of the diameter D4, or between approximately 10% and approximately 50% of the diameter D4, or between approximately 20% and approximately 40% of the diameter D4, or between approximately 30% and approximately 40% of the diameter D4, or between approximately 30% and approximately 35% of the diameter D4. In some embodiments, the diameter D3 is approximately 32 mm and the diameter D4 is approximately 98 mm.

[0104] Still referring to Figure 26 and Figure 27 , the base 356 also defines a sidewall 384 that extends downward from the upper edge 360 of the base 356, toward its step 386. The sidewall 384 of the base 356 is tapered and extends downward and inward from the upper edge 360, toward the longitudinal axis 80. As Figure 26 and Figure 27As shown, the base 356 also includes a lower portion 388 that extends from the step 386 and includes a bottom wall 390. A plurality of vents 398 are included in the lower portion 388 of the base 356. As will be discussed in further detail herein, the plurality of vents 398 allow air to flow through the dispenser 350 and help to disperse volatile substances within the refill 352. As Figure 27 shown, a plurality of feet 402 extend downwardly from the bottom wall 390 and are arranged to allow the dispenser 350 to be placed on a flat surface (not shown). Additionally, a button 410 extends outwardly from the base 356, away from the longitudinal axis 80. The button 410 can be used for a variety of purposes and can have a variety of different functions, as described below.

[0105] Referring Figure 27 , the button 410 can be provided along the base 356 of the dispenser 350. The button 410 can be configured to open the dispenser 350 and adjust the settings of the device. In some embodiments, the button 410 or the portion around the button 410 can emit light. As will be discussed in more detail below, the button 410 can allow a user to turn on and off certain functions of the dispenser 350. In other words, the button 410 can be used to adjust the settings of the dispenser 350. As Figure 27 shown, the button 410 includes a generally racetrack shape. However, it is contemplated that the button 410 can be any shape or size. Additionally, in some embodiments, similar to the dispenser 50, the dispenser 350 can include a plurality of buttons 410.

[0106] Now referring Figure 28 and Figure 29 , rear and right side views of the dispenser 350 are shown, respectively. As Figure 28 and 29 shown, the dispenser 350 also includes a port assembly 412 that includes a low voltage socket or port 414 (see Figure 40 ) for receiving a low voltage electrical connector of a low voltage wire, such as a USB wire (not shown). The port assembly 412 also includes a recessed wall 416 and a port cover 418 that covers the port 414. The port cover 418 is configured to be removably attached to the port 414 to allow access thereto. As described herein, the port cover 418 is configured to protect the port 414 when the port 414 is not in use. In some embodiments, electrical pins, wires, or another suitable electrical connector can be electrically coupled to the dispenser 350 to allow power to be provided to the dispenser 350. In some embodiments, the port 414 can be a USB-c port and / or can be used to charge the dispenser 350. In addition to the port assembly 412, the base is symmetric about a plane 36-36 that bisects the button 410 (see Figure 30)Symmetry. As further noted herein, additional features may be provided within and / or along the cover 354 and / or the base 356. Additionally, an additional body defining one or more sidewalls (not shown) may be disposed between, above, or below the base 356 and the cover 354.

[0107] Now referring to Figure 30 , a top view of the dispenser 350 is shown. The chimney 380 is shown in more detail and is centered along the longitudinal axis 80 (see Figure 27 ). The piezoelectric assembly 110 is shown within the chimney 380 and is also centered along the longitudinal axis 80. The annular piezoelectric element 112 is also visible through the chimney 380. As discussed above with respect to the dispenser 50, the piezoelectric element 112 includes a central aperture 114 through which the volatile liquid within the refill 352 is dispersed when the dispenser 350 is activated. When the dispenser 350 is activated, the flow / plume of volatiles is dispensed through the chimney 380 of the cover 354 and exits the dispenser 350, as discussed in more detail below. The chimney 380 is larger than the chimney 78, allowing more air flow through. As will be further discussed below, the volatile substances from the refill 352 and the air flowing through the dispenser 350 (via the plurality of vents 398) may move through the chimney 380.

[0108] Now referring to Figure 31 , the bottom wall 390 of the lower portion 388 of the base 356 is shown in more detail. A plurality of feet 402 extend from the bottom wall 390. In the preferred embodiment, the base 356 includes three feet 402. However, in some embodiments, 1, 2, 3, 4, 5, 6, 7, 8, 9 or more feet may extend from the bottom wall 390. As Figure 31 shown, the plurality of feet 402 include an inclined or angled generally oval or racetrack shape. In other words, the plurality of feet 402 are rotationally symmetric about the longitudinal axis 80. Alternative configurations or shapes of the feet 402 may be envisioned, and in some embodiments, additional structures may be included in addition to the feet 402. In some embodiments, no feet 402 or other type of stabilizing mechanism holds the dispenser 350 in an upright configuration.

[0109] Still referring to Figure 31 , the bottom wall 390 also includes a plurality of slots 424 that extend through the bottom wall 390 and into the dispenser 350. Additionally, the bottom wall 390 includes a plurality of cylindrical slots 426 that extend into the dispenser 350. The plurality of slots 424 assist in securing internal components to the bottom wall 390, and the plurality of cylindrical slots 426 assist in supporting the base 356 and its internal portions. As Figure 31 shown, the plurality of vents 398 also extend onto the periphery of the bottom wall 390.

[0110] Referring now to Figures 32 to 34 , there is shown a support assembly 440 of the dispenser 350, and for clarity, the cover 354 has been removed. Similar to the dispenser 50, the support assembly 440 includes a platform 442, a support 444, a refill chassis 446, and a crown 448. The refill chassis 446 and the crown 448 define a manifold 450 that holds the refill 352 and the piezoelectric assembly 110 (see Figure 41 ). As shown in Figures 32 - 34 , the platform 442 extends upward from the base 356 and is embedded from its sidewall 384. As will be discussed further in detail herein, the platform 442 includes a plurality of hooks 452 that are fixed to the base 356. Once assembled, the platform 442 is firmly held on the base 356 by the plurality of hooks 452 and a plurality of platform posts 454 that extend downward from the platform 442 (see Figure 37 ). In some embodiments, the platform 442 may further include a plurality of platform ribs 456 that fix the platform 442 to the base 356 and provide additional support thereto (see Figure 37 ). Additionally, in some embodiments, the platform 442 may be permanently or removably coupled to the base 356 by a plurality of fasteners or fastening mechanisms (such as fasteners, rivets, nails, bolts, or cables).

[0111] Still referring to Figures 32 to 34 , the platform 442 includes a generally circular shape with a groove 458 passing through the center. The platform 442 also includes a receiving cavity 460 located at the center of the platform 442. The receiving cavity 460 includes a circular shape and may assist in inserting the refill 352 into an operable configuration. The receiving cavity 460 may also include additional features that help hold the refill 352 or another component. For example, in some embodiments, the size and shape of the receiving cavity 460 of the platform 442 may be designed to hold the lid 146 of the refill 352 after the lid 146 is removed from the refill 352 (see Figure 10 ).

[0112] Still referring to Figures 32 to 34 , the support assembly 440 includes a support 444 that extends upward from the platform 442 along its rear portion 462. The support assembly 440 includes an integral piece that extends upward from the platform 442 toward the manifold 450, and the manifold 450 extends inward and is aligned with the longitudinal axis 80. The elements of the support assembly 440 may also include polypropylene or another type of polymeric material. As described above, the manifold 450 includes a crown 448 and a refill chassis 446 that extends downward from the crown 448. Similar to the chassis 122 described above, the chassis 446 includes a downwardly overhanging protrusion 150 to hold the annular edge 152 of the refill 352 (see Figure 41 ). However, as shown in Figure 34As shown, the chassis 446 includes three protrusions 150 extending downward from the chassis 446, rather than the two protrusions 150 of the chassis 122. The three protrusions 150 are positioned to be rotationally offset from each other. In other words, the three protrusions 150 are offset from each other by 120° about the longitudinal axis 80. As described above, when the refill 352 is laterally inserted into the chassis 446, the protrusions 150 can be formed to bend outward until the edge 152 of the refill 352 (see Figure 41 ) engages with the protrusions 150. In particular, the inwardly hanging latch 236 is configured to translate outward away from the longitudinal axis 80 when the refill 352 is inserted into the chassis 446 and snap inward to secure the refill 352 in place within the chassis 446 by engaging with the edge 152 (see Figure 41 ). In some embodiments, the chassis 446 can include 1, 2, 3, 4, 5, 6, 7, 8, 9 or more protrusions 150 extending downward therefrom. Additionally, in some embodiments, Figures 32 to 34 the protrusions 150 shown can extend further downward from the chassis 446 than Figures 7 to 9 the protrusions 150 shown to accommodate a longer refill 352.

[0113] Similar to the refill 52, the refill 352 can be removed from the protrusions 150 by the user by grasping the refill 352 and laterally pulling the refill downward. In some embodiments, the force required to insert and remove the refill 352 is low enough to simply allow lateral insertion and removal. However, in some embodiments, the refill 352 can be removed by squeezing the protrusions 150 to deflect the protrusions 150 outward, thereby releasing the edge 152 from engagement with the protrusions 15. In some embodiments, the refill 352 can be disengaged by rotating the refill 352 such that the threads 154 (see Figure 39 ) allow the refill to rotate and translate downward away from the crown 448 for removal from the manifold 450. Alternative removal mechanisms can be implemented, such as one or more buttons (not shown) that can be pressed to release the refill 352 from the chassis 446.

[0114] Still referring to Figures 32 - 34 , the crown 448 extends upward from the chassis 446 and defines a generally frustoconical side surface 470 that terminates at a top wall 472. A plurality of ribs 474 are radially arranged along the side surface 470, which can be formed to assist with engagement with the air deflector 476 (see Figure 41)Physical engagement. The ribs 474 are spaced apart about the longitudinal axis 80 and extend further outward from the side surface 470 of the crown 448 than the ribs 160 described above in connection with the dispenser 50. Each of the plurality of ribs 474 may include a support 478 that extends from the side surface 470 of the crown 448 and through the rib 474. The support 478 may contact the bottom surface 480 of the cover 354 (see Figure 41 ). In some embodiments, the crown 448 may include more or fewer ribs 474 than shown.

[0115] Still referring to Figures 32 - 34 , the annular wall 490 extends upward from the top wall 472 of the crown 448 and has a center coaxial with the longitudinal axis 80. The annular wall 490 defines a passage or opening 492 therethrough and is also coaxial with the chimney 380 defined by the cover 354. As described herein, the annular wall 490 is similar to the cylindrical wall 164 of the dispenser 50 described above. In some embodiments, the annular wall 490 may define a cylindrical surface. As further noted herein, the cover 354, the platform 442, the bracket 444, and the manifold 450 may be characterized as symmetric about a plane 36-36 that intersects the button 410 and extends through the longitudinal axis 80 (see Figure 30 ).

[0116] Now referring to Figure 35 , the interior of the base 356 is shown, with the side wall 384 and the lower portion 388 of the base 356 removed for clarity. As Figure 35 shown, the base 356 also includes a battery 502, an air isolator 504, a fan 506, and a sealed engine 508. The battery 502 is secured with a battery cover 510 and is located below the air isolator 504. The battery cover 510 includes a plurality of battery protrusions 512 that extend downward from the battery cover 510, and the battery cover 510 is configured to protect the battery 502 from external factors, i.e., rain, dust, etc. During use, the plurality of battery protrusions 512 are configured to extend through the bottom wall 390 of the base 356 through a plurality of slots 424 and are fixed to the bottom recess 516 of the bottom wall 390 of the base 356 (see Figure 31 ). In some embodiments, portions of the battery cover 510 and the lower portion 388 of the base 356 may firmly surround the battery 502 (see Figure 36 and Figure 37 ). In other words, the portions of the battery cover 510 and the lower portion 388 of the base 356 that extend from the bottom wall 390 may protect the battery 502 from external elements (see Figure 36 and Figure 37 ).

[0117] Still referring to Figure 35, the battery cover 510 further includes a battery cover post 518 that is fixed to a seal engine support 520 that seals the engine 508 (see Figure 37 ). In a preferred embodiment, the battery 502 is a rechargeable lithium-ion battery and / or a nickel-metal hydride battery. However, in some embodiments, the battery 502 may include an alkaline battery. Thus, it is contemplated that any type of battery may be used for the battery 502. As described above, the battery 502 is a rechargeable battery 502 that can be charged through the port assembly 412. Thus, in a preferred embodiment, the battery 502 may be electrically coupled to the port assembly 412. In some embodiments, the battery 502 may allow the dispenser 350 to operate for 6 - 12 hours before requiring charging or replacement. Additionally, in some embodiments, the battery 502 may be removably coupled to the base 356. Thus, in some embodiments, the battery 502 may be removed from the base 356 and charged separately. Thus, when charging the original battery, the depleted original battery can be replaced with a fully charged battery.

[0118] Still referring to Figure 35 , the air isolator 504 includes an air isolator sidewall 526 and a plane 528. An air intake hole 530 extends through the center of the plane 528 of the air isolator 504. As Figure 35 shown, the air isolator 504 includes a generally circular shape with some discontinuities near the button 410. The air isolator 504 is located between the fan 506 and the battery 502. In a preferred embodiment, the shape of the air isolator 504 follows the general shape of the base 356. The air isolator 504 further includes a plurality of air isolator posts 532 that are coupled to a plurality of seal engine posts 540 by a plurality of fasteners 542 (see Figure 36 ). Once assembled, the air isolator sidewall 526 may be located on the step 386 of the base 356 and adjacent to the sidewall 384 of the base 356 (see Figure 38 ). As will be discussed in further detail herein, the air isolator 504 helps direct air through the base 356 via the air intake hole 530 to the fan 506.

[0119] Still referring to Figure 35 , the fan 506 is located directly above the air intake hole 530 of the air isolator 504 so as to draw in air through it. The fan 506 includes a plurality of fan blades 550 and a motor 552 located within the seal engine 508 (see Figure 37) As will be discussed in further detail below, the fan 506 is configured to draw air through the plurality of vents 398 and discharge it from the chimney 380. In some embodiments, the fan 506 may have a fan speed of 3100 - 3600 rpm. Additionally, in some embodiments, the air flow associated with the fan 506 may be approximately 1.0 CFM. As described herein, any type of fan may be used in the dispenser 350. In a preferred embodiment, the fan 506 may be a centrifugal fan. Thus, the fan 506 can draw air through the air inlet holes 530 of the air isolator 504 and discharge it around the sealed engine 508 and the bracket assembly 440.

[0120] Still referring to Figure 35 , the sealed engine 508 is located on top of the fan 506 and below the platform 442. As will be discussed in further detail herein, the sealed engine 508 is configured to hold various electronic devices within the dispenser 350. Specifically, the sealed engine 508 is configured to protect various electronic devices from water damage or other external elements. Thus, in a preferred embodiment, the sealed engine 508 is waterproof and / or dustproof. As Figure 35 shown, the sealed engine 508 is bowl-shaped, i.e., convex when looking up at the sealed engine 508, and includes a side wall 560. The side wall 560 of the sealed engine 508 includes a plurality of sealing flanges 562 and retaining protrusions 564 extending therefrom. Each sealing flange 562 includes a sealing groove 566 configured to receive one of the plurality of hooks 452 of the platform 442 passing therethrough to secure the sealed engine 508 to the platform 442. The retaining protrusions 564 extend outwardly from the side wall 560 of the sealed engine 508 and are used to engage the cover 354 when the cover 354 is coupled to the base 356. The retaining protrusions 564 are a retaining mechanism for coupling the cover 354 to the base 356. Alternative retaining mechanisms may include elements that result in snap fits, friction fits, or interference fits. The sealed engine 508 may also be fixed to the platform 442 by a plurality of platform posts 454 (see Figure 37 ).

[0121] As described above, the sealed engine 508 may further include a plurality of sealed engine posts 540 extending downwardly from the side wall 560 of the sealed engine 508. In some embodiments, the plurality of sealed engine posts 540 may include a plurality of main posts 568 and a plurality of auxiliary posts 570, the plurality of auxiliary posts 570 being smaller than the plurality of main posts 568. As described herein, the plurality of sealed engine posts 540 may include various shapes and sizes. As Figure 35 shown, the sealed engine 508 further includes a bottom wall 574 adjacent to the fan 506. The fan 506 may extend through the bottom wall 574 of the sealed engine 508 to connect to the motor 552 (see Figure 36) As described herein, platform 442 defines the top surface of the seal engine 508.

[0122] Now referring to Figure 36 and 37 for a cross-sectional view that more particularly shows the internal components of dispenser 350. Referring to Figure 36 , seal engine 508 is shown connected to bracket assembly 440 by platform 442. Additionally, seal engine 508 is secured to cover 354 by retention projections 564. In particular, cover 354 includes a plurality of retention features 580 that extend inwardly from bottom surface 480 of cover 354. Retention projections 564 are configured to slide into retention features 580 to secure cover 354 to base 356, which is seal engine 508. As Figure 36 shown, lower portion 388 of base 356 also includes a plurality of support posts 582 that help to further secure all of the internal components of base 356 together. Specifically, each of the plurality of support posts 582 extends from bottom wall 390 of base 356 into one of the air isolator posts 532. Each of the plurality of support posts 582 and air isolator post 532 is also connected / fastened to seal engine 508 by one of the fasteners 542. In other words, each of the plurality of main posts 568 of seal engine post 540 is configured to mate with one of the air isolator posts 532, which includes one of the support posts 582 therein. Thus, air isolator posts 532, main posts 568 of seal engine post 540, and support posts 582 are all coupled to one another by the plurality of fasteners 542. In this embodiment, there are three fasteners 542 that secure air isolator posts 532, main posts 568 of seal engine post 540, and support posts 582, however, only a single fastener 542 is shown in the cross-section of Figure 36 .

[0123] Still referring to Figure 36, shows a printed circuit board (PCB) 590 within the sealed engine 508. A plurality of light emitting diodes (LEDs) 592 are shown electrically coupled to the PCB 590, and the plurality of LEDs 592 are arranged above the PCB 590. In some embodiments, the plurality of LEDs 592 are arranged above and / or below the PCB 590. Additionally, in some embodiments, some of the LEDs 592 are arranged adjacent to the front, rear, and sides of the dispenser 350. As described herein, the LEDs 592 are intended to emit light through the cover 354 and / or the button 410 according to selected settings, which may vary according to user preferences. The LEDs 592 may alternatively be positioned at any suitable location within the dispenser 350. One or more of the LEDs 592 may indicate that the dispenser 350 is open or closed, may provide an alert, such as low battery, and / or may provide any other suitable indicator to the user. As further noted herein, the color and / or brightness of the LEDs 592 may be adjusted according to the desired brightness and / or color of the light emitted through the cover 354.

[0124] For example, when the dispenser 350 is open, the LED 592 may illuminate a first color or a first blinking color; when the battery 502 is low, a second color or a second blinking color may be illuminated; when the dispenser 350 is plugged into a power source, a third color or a third blinking color may be illuminated; and according to the settings of the dispenser 350, other colors may be illuminated. In some embodiments, the LEDs 592 may illuminate a dim color or light according to the settings. The dispenser 350 may also include one or more individual openings in the cover 354 and / or the base 356 to allow the light emitted by each LED 592 to pass through. Additionally, as described above, the dispenser 350 may include a translucent or transparent portion to allow the light emitted by each LED 592 to pass through.

[0125] Still referring to Figure 36 , the button 410 is shown protruding through the base 356 and adjacent to the switch 602. The switch 602 is operable to adjust between various settings of the dispenser 350. The switch 602 may be a pushbutton switch, which when pressed, may cause the dispenser 350 to initiate one or more functions, such as opening or closing the dispenser 350, adjusting the amount of fragrance dispensed, adjusting one or more settings on the dispenser 350, or adjusting the color or brightness of one or more of the LEDs 592. As Figure 36 shown, the switch 602 may be electrically coupled to the PCB 590.

[0126] Although dispenser 350 is disclosed as having a specific switch, those skilled in the art will understand that dispenser 350 can include any number of switches and / or can include any suitable type of switch, such as a timing switch, an on / off switch, a setting switch, a switch that controls another component within the control assembly (such as heater or fan 506), and / or any other suitable switch.

[0127] Still referring to Figure 36 , motor 552 is shown within sealed engine 508. As described above, motor 552 is configured to power and move fan 506 during use. As described herein, motor 552 can include any type of motor to adequately drive fan 506. As described above, once assembled, sealed engine 508 can provide protection for motor 552, LED 592, PCB 590, and any other electronic components therein from external factors (i.e., water or dust). As Figure 36 shown, sealed engine 508 can include a plurality of support ribs 612 that interact with a plurality of platform ribs 456 to secure motor 552 within sealed engine 508 (also see Figure 38 ). In some embodiments, motor 552 can be received between the plurality of support ribs 612 and the plurality of platform ribs 456. The plurality of support ribs 612 are configured to surround motor 552 and hold motor 552 in place.

[0128] Still referring to Figure 36 , bracket assembly 440 is shown in cross-section and the components disposed therein are visible. Specifically, first and second wires 226 are shown extending from PCB 590, through bracket 444, and into manifold 450. As described above with respect to dispenser 50, first and second wires 226 of dispenser 350 are electrically connected to PCB 590 and piezoelectric assembly 110, which is disposed within crown 448 of bracket assembly 440. In some embodiments, first and second wires 226 can be located within a wire conduit. As Figure 36 shown, bracket 444 is fixedly coupled to chassis 446, which is also fixedly coupled to crown 448. Bracket 444, chassis 446, and crown 448 are all separate components and can be coupled to each other by snap-fit, friction fit, interference fit, adhesive, or another coupling method. In some embodiments, bracket 444 can be attached to chassis 446 and crown 448 by a plurality of fasteners. As described above, bracket 444, chassis 446, and crown 448 can all include polypropylene or another polymeric material. As Figure 36Further shown, the piezoelectric assembly 110 is centered along the longitudinal axis 80. Although the bracket 444, the chassis 446, the platform 442, the base 356, and the cover 354 are shown as including polymers, other types of materials may also be considered, such as glass, ceramics, wood, metals, etc.

[0129] Still referring to Figure 36 , a spring 620 is shown, which is used to apply a force to the piezoelectric assembly 110. The spring 620 applies a constant force to the piezoelectric assembly 110 to hold it in a static configuration until the user positions the refill 352 within the chassis 446. Similar to the spring 232 described above with respect to the dispenser 50, when the user inserts the refill 352 into the dispenser 350, the piezoelectric assembly 110 translates upward, causing the spring 620 to compress. The spring 620 defines a spring wire 622 having a wire diameter, which will be discussed further below. The piezoelectric assembly 110 is disposed above the refill cavity 624 and is configured to receive the distal end 204 of the core 188 when the refill 352 is inserted into the chassis 446 (see Figure 41 ). As Figure 36 shown, the chassis includes a piezoelectric platform 630, which is integral with the chassis 446 and defines a surface to which the piezoelectric assembly 110 is secured. Thus, the piezoelectric platform 630 holds the piezoelectric assembly 110 in place and prevents the piezoelectric assembly 100 from shifting further than the piezoelectric platform 6.3 when the refill 352 is not secured to the chassis 446. The piezoelectric platform 630 is generally circular and includes a hole 632 at its center, which allows the distal end 204 of the core 188 to physically contact the piezoelectric assembly 110 when inserted into the chassis 446 (see Figure 41 ). When the refill 352 is not inserted into the dispenser 350, the piezoelectric assembly 110 is positioned on the piezoelectric platform 630 by the spring 620 pressing it against the piezoelectric platform 630. Once the refill 352 is inserted into the dispenser 350, the piezoelectric assembly 110 will lift off the piezoelectric platform 630 to accommodate the core 188 of the refill 352 (see Figure 41 ).

[0130] Still referring to Figure 36 , the chassis 446 includes a plurality of bosses 640 located above the protrusions 150 ( Figure 36 only shows one boss 640). In other words, a single boss 640 is located above each protrusion 150. The plurality of bosses 640 are configured to engage with a plurality of flanges 642 on the crown 448 ( Figure 36 only shows one flange). The engagement of the plurality of bosses 640 and the plurality of flanges 642 secures the chassis 446 and the crown 448 together. The chassis 446 and the crown 448 are snap-fitted together; however, the chassis 446 and the crown 448 may be joined together in another manner, such as by an adhesive, a fastener, an interference fit, or a friction fit.

[0131] Now referring to Figure 37 , another cross-sectional view of the dispenser 350 is shown. The battery cover post 518 is shown extending into the sealed engine support 520, and the platform post 454 is shown extending into the cylindrical sleeve 648 of the sealed engine 508. In addition, the refill guide rib 230 is configured to closely receive the refill 352 within the chassis 446. As Figure 37 shown, the spring 620 includes a top end 654 and a bottom end 656. The piezoelectric assembly 110 is also shown in Figure 37 and is disposed below the bottom end 656 of the spring 620. The bottom end 656 of the spring 620 may be fixedly attached to the piezoelectric assembly 110 or may be separate but arranged to be in physical contact with each other. Thus, the bottom end 656 of the spring 620 is formed to receive the piezoelectric assembly 110, and when the refill 352 engages the piezoelectric assembly 110, the piezoelectric assembly 110 in turn is formed to receive the upper core 192.

[0132] Referring to Figure 36 and 37 , the annular wall 490 defines a plurality of fingers 660 that extend downwardly from the top wall 472 of the crown 448 about the longitudinal axis 80. As described herein, the plurality of fingers 660 are an extension of the annular wall 490 and are configured about the longitudinal axis 80. In other words, the annular wall 490 defines a plurality of openings 662 between the plurality of fingers 660. As Figure 36 and 37 shown, the top end 654 of the spring 620 is wound around the plurality of fingers 660 of the annular wall 490 and contacts the crown 448. In other words, the top end 654 of the spring 620 is located around the plurality of fingers 660 of the annular wall 490. In some embodiments, the spring 620 may be fixed to the annular wall 490 of the crown 448.

[0133] Still referring to Figure 36 and Figure 37 , the air deflector 476 is fixed to the cover 354 and the crown 448. The air deflector 476 includes a frustoconical shape and includes an air wall 670 that extends around the crown 448. The air wall 670 is angled relative to the longitudinal axis 80 and contacts the bottom surface 480 of the cover 354. Specifically, the air wall 670 contacts the splined lower portion 368 of the cover 354 at a first end 672 and the frustoconical upper portion 370 of the cover 354 at a second end 674. The second end 674 of the air wall 670 is located within the cover recess 676 on the bottom surface 480 of the cover 354. The air wall 670 also includes an air wall boss 678 that is configured to receive a portion of the bottom surface 480 of the cover 354 (see Figure 36 ). As Figure 36 and Figure 37As shown, the bottom surface 480 of the cover 354 includes a plurality of cover posts 686 that extend through the air deflector posts 688. The plurality of cover posts 686 helps to further secure the air deflector 476 to the cover 354. Additionally, the air deflector 476 contacts a plurality of ribs 474 on the crown 448. The plurality of ribs 474 allows the air deflector 476 to be spaced apart from the crown 448 and defines a plurality of air channels 690 therebetween. As described herein, the plurality of air channels 690 are defined by the air walls 670 of the air deflector 476 and the side surface 470 of the crown 448. In use, air is configured to pass through the plurality of air channels 690 via the fan 506 and distribute fragrance from the refill 352. In other words, the air deflector 476 is configured to direct air out of the chimney 380. As described herein, the air deflector 476 is coaxial with the chimney 380 and is located around the longitudinal axis 80. The air deflector 476 allows the airflow around the chimney 380 to be optimized and directed away from the dispenser 350. Additionally, the air deflector 476 helps to reduce air turbulence, condensation, and particle settlement around the dispenser 350. As described above, a plurality of supports 478 on the plurality of ribs 474 may contact the bottom surface 480 of the cover 354. Specifically, the support 478 may contact the bottom surface 480 of the cover 354 between the lip 372 and the cover groove 676.

[0134] Now referring to Figure 38 , an enlarged cross-sectional view of the base 356 is shown, where a plurality of arrows A illustrate the airflow through the base 356. When the fan 506 is operating, air can move through the plurality of vents 398 into the base 356 and flow through the intake holes 530 of the air isolator 504. After flowing through the intake holes 530, the fan 506 can push the air around the sealed engine 508 and the platform 442. Now referring to Figure 37 , once the air flows around the platform 442 (see the arrows A in Figure 37 ), the air can flow upward and around the bracket assembly 440, through the air channels 690 between the air deflector 476 and the crown 448, and out of the chimney 380. As described herein, in some embodiments, air can flow through the dispenser 350 even when the fan 506 is not turned on.

[0135] Now referring to Figure 39, shows the refill 352 in more detail. As described herein, the refill 352 is substantially similar to the refill 52 described above with respect to the dispenser 50. The main differences between the refill 352 and the refill 52 relate to the position of the annular edge 152 and the lengths of the end 182 and the head 176. In particular, the refill 352 includes an end 182 and a head 176 that are longer than those of the refill 52. Additionally, due to this longer end 182, the position of the annular edge 152 of the refill 352 is lower than that of the refill 52, i.e., further from the thread 154. Accordingly, the refill 352 includes a greater height than the refill 52, i.e., the height parallel to the longitudinal axis 80. In some embodiments, the plug 186 of the refill 352 may include a plurality of teeth 694 that secure the core 188 in place. As described herein, the refill 352 may also include a lid 146 (see Figure 10 ). In some embodiments, the refill 352 may include a plurality of markings or labels thereon. Additionally, in some embodiments, the refill 352 may be formed of plastic, such as polyethylene terephthalate (PET). Further, in some embodiments, the plastic may be 100% post-consumer recycled (PCR) plastic with an ultraviolet inhibitor. However, it is contemplated that the refill 352 may be formed of any type of plastic or polymer. As further noted herein, the refill 352 includes a core 188 (including an upper core 192 and a lower core 194), as described above with respect to the refill 52.

[0136] In some embodiments, the refill 352 may be provided in the form of a replacement kit. For example, a plurality of refills 352 may be packaged and sold together to a user. Thus, once the refill 352 has exhausted the volatile substance within the dispenser 350, the refill 352 may be replaced with one of the refills within the replacement kit. In some embodiments, the replacement kit may include a box or container having 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or more refills 352. Each refill 352 within the replacement kit may include a different (or the same) fragrance or volatile substance.

[0137] As described herein, the volatile substance disposed within the container 170 of the refill 352 may be any type of volatile substance suitable for dispensing into the environment. For example, the substance within the container 170 may include a cleaner, an insecticide, a repellent, an insect attractant, a disinfectant, a mildew inhibitor or mold inhibitor, a fragrance, a sanitizer, an air purifier, an aromatherapy fragrance, a preservative, an odor eliminator, a positive aromatic volatile, an air freshener, a deodorant, etc., and combinations thereof. Additives, such as fragrances and / or preservatives, may be included within the volatile substance. In fact, any fluid may be provided within the container 170.

[0138] Now refer to Figure 40, the piezoelectric assembly 110, the port assembly 412, the motor 552, the fan 506, the button 410, and the printed circuit board (PCB) 590 are shown in an isometric view. In other words, the electrical components within the sealed engine 508 are shown to have the motor 552, the fan 506, the port assembly 412, the button 410, the wire 226, and the piezoelectric assembly 110. The PCB 590 includes a generally annular shape with various notches therein. Additionally, the PCB 590 includes a PCB hole 702 extending through the middle of the PCB 590. The motor 552 is configured to be located within and extend through the PCB hole 702. As described above, the wire 226 is configured to connect to the PCB 590 and the piezoelectric assembly 110. Additionally, the switch 602 of the button 410 is connected to the PCB 590. In some embodiments, the motor 552 may be coupled or electrically coupled to the PCB 590. As Figure 40 shown, the port assembly 412 includes a port printed circuit board (PCB) 706 fixed to the port 414. In some embodiments, the port PCB 706 may be electrically coupled to the PCB 590.

[0139] As described herein, in some embodiments, the PCB 590 may include one or more controllers and / or one or more timers fixed on and / or within it, similar to the PCB 216 described above. Additionally, in some embodiments, the controller may be arranged within or along the PCB 590. Alternatively, in some embodiments, the dispenser 350 may include a controller that is a separate component electrically coupled to the PCB 590. Additionally, in some embodiments, the timer may be arranged within or along the PCB 590, or may be a separate component. In some embodiments, the wire 226 may be connected to terminals (not shown) fixed to the PCB 590. As described herein, other electrical components, such as resistors, transistors, capacitors, processors, controllers, and relays, may be further arranged along or within the PCB 590.

[0140] The LED 592, the button 410, the switch 602, and the wire 226 are clearly shown in Figure 40 the view. In some embodiments, the dispenser 350 may include a limit switch that provides a signal to the controller when the cover 354 is fixed to the base 356, thereby not allowing the dispenser 350 to be activated until the cover 354 is fixed to the base 356. As Figure 40As shown, four LEDs 592 are coupled to the PCB 590. In some embodiments, the dispenser 350 may include 1, 2, 3, 4, 5, 6, 7, 8, 9 or more LEDs 592. Different LEDs 592 may emit different colors of light, or may emit the same color. Additionally, the LEDs 592 may have the same intensity or different intensities from each other. As described herein, the PCB 590 may include any shape or profile to allow it to be held securely with the profile of the base 356.

[0141] Still referring Figure 40 , the piezoelectric assembly 110 of the dispenser 350 is shown secured to the wire 226. As described herein, the piezoelectric assembly 110 of the dispenser 350 is substantially the same as the piezoelectric assembly 110 of the dispenser 50 described above. Thus, the piezoelectric assembly 110 of the dispenser 350 also includes a piezoelectric plate 260 and piezoelectric elements 112 surrounding the periphery of the upper surface 262 of the piezoelectric plate 260. Additionally, the piezoelectric plate 260 further includes a central dome 264 that is generally concave and circular in shape. The central dome 264 includes a hole portion 266 that includes a plurality of orifices 268, as described above with respect to the dispenser 50.

[0142] As described herein, the piezoelectric assembly 110 of the dispenser 350 functions in the same manner as the piezoelectric assembly 110 of the dispenser 50. Thus, when the piezoelectric elements 112 are energized, the piezoelectric plate 260 expands and contracts, thereby releasing the volatile substance into the surrounding environment. Although specific piezoelectric elements 112 are described, any actuator may be utilized, e.g., a piezoelectric vibrating mesh actuator, a piezoelectric standing wave actuator, a piezoelectric vibrating needle, or any other suitable piezoelectric actuator. As further noted herein, the plurality of orifices 268 are positioned in a circular manner and define an array 269 (see Figure 18B ). Additionally, as described herein, the core 188 of the refill 352 may include a core diameter DW as described above (see Figure 12 ), and the plurality of orifices 268 of the dispenser 350 may define an array diameter DA as described above (see FIG. 18).

[0143] As further discussed above, in some embodiments, the diameter or at least one width dimension of the array 269 is between about 0.5 mm and about 10.0 mm, or between about 1.0 mm and about 9.0 mm, or between about 2.0 mm and about 8.0 mm, or between about 3.0 mm and about 7.0 mm, or between about 3.0 mm and about 4.0 mm, or between about 3.5 mm and about 4.0 mm, or between about 3.7 mm and about 3.9 mm, or about 3.8 mm. As further discussed above, the core diameter DW (see Figure 12) and the array diameter DA (see FIG. 18) can define the ratio of DW / DA to be between about 1.0 and about 3.0. In some embodiments, the ratio is about 1.1. In some embodiments, the ratio of DW / DA is between about 1.4 and about 1.5, or about 1.4, or about 1.5. In some embodiments, the core diameter DW is between about 3.0 mm and about 5.5 mm, or between about 3.5 mm and about 4.0 mm, or about 3.8 mm. In some embodiments, the core diameter DW is between about 5 mm and about 6 mm, or between about 5.2 mm and about 5.7 mm, or about 5.5 mm. In some embodiments, the array diameter DA is between about 3.0 mm and about 6.0 mm, or between about 4.0 mm and about 5.0 mm, or about 4.5 mm. In some embodiments, the array diameter DA is between about 3 mm and about 4.5 mm, or between about 3 mm and about 4 mm, or between about 3.5 mm and about 4 mm, or about 3.8 mm. The ratio of the core diameters can affect the accuracy and consistency of the volatile plume emitted by the dispenser 350. For example, it has been found that a ratio of DW / DA of about 1.1 (or greater than 1.0) enables a repeatable and accurate dispersion of volatiles from the dispenser 350. In some embodiments, the array 269 can include from about 100 to about 400 orifices, or from about 150 to about 350 orifices, or about 316 orifices, or about 200 orifices, or about 150 orifices.

[0144] Now referring to Figure 41 , a detailed view of the upper end of the bracket assembly 440 is shown, in which the refill 352 has been inserted. In some embodiments, a soft material, such as a loading foam, can be provided along the bottom side of the piezoelectric assembly 110. As described above, additional material can be provided along the bottom surface of the piezoelectric assembly 110 to contribute to the accuracy or consistency of the volatile plume generated when the dispenser 350 is activated.

[0145] Still referring to Figure 41 , the top end 654 of the spring 620 is shown wound around a plurality of fingers 660 of the annular wall 490, and the bottom end 656 of the spring 620 is shown in contact with and applying a force to the piezoelectric assembly 110. In other words, the top end 654 of the spring 620 surrounds the plurality of fingers 660 of the annular wall 490, and the bottom end 656 of the spring 620 contacts the piezoelectric element 112. As described above, the spring 620 is positioned to provide a reaction force against the refill 352 when the refill 352 is inserted into the chassis 446. Thus, when the core 188 engages the piezoelectric assembly 110, the spring 620 is compressed and the piezoelectric assembly 100 is displaced a distance X above the piezoelectric platform 630 (see Figure 20 ).

[0146] Still referring to ​, the refill 352 is shown as having been inserted into the manifold 450. Since the refill 352 has been inserted into the refill cavity 624 of the chassis 446, the spring 620 has been compressed, and thus, the spring 620 is shown as being in a compressed configuration in ​ . Still referring to ​ , the edge 152 of the refill 352 is also shown as engaging the detent 236 of the protrusion 150, and the distal end 204 of the core 188 is shown as physically contacting the lower surface 276 of the piezoelectric assembly 110. As described above with respect to the dispenser 50, ​ the compression of the spring 620 shown is the result of the size and type of the spring 620 used in the dispenser 350, and the size and type of the spring 620 can be selected according to various factors. Except that the spring 620 has been compressed, the piezoelectric assembly 110 has been translated upward due to the force applied by the core 188, and the detent 236 of the protrusion 150 has engaged the edge 152 of the refill 352, no other elements of the manifold 450 move or are actuated when the refill 352 is inserted into the manifold 450. As described herein, ​ the refill 352 in an operating state is shown, in which the dispenser 350 can be activated to disperse the volatiles by providing an electrical pulse to the piezoelectric assembly 110. As discussed in detail above, an absorbent material (not shown) may be included between the core 188 and the piezoelectric assembly 110.

[0147] During operation, the piezoelectric assembly 110 is actuated continuously or intermittently to dispense a volatile substance. More specifically, as described above, an oscillating electric field is applied to the piezoelectric element 112, causing the piezoelectric plate 260 to expand and contract in the radial direction. The expansion and contraction cause the piezoelectric plate 260 to vibrate in the axial direction (along the longitudinal axis 80 of the dispenser 350), forcing the volatile substance retained within the orifice of the piezoelectric plate 260 away from the piezoelectric assembly 110, through the passage 492 defined by the annular wall 490, and through the chimney 380 of the cover 354 (see arrow P defining the volatile plume). As the volatile plume passes through the chimney 380, air that is forced through the dispenser 350 via the fan 506 passes through a plurality of air channels 690 defined by the air deflector 476 (see arrow A defining the air flow via the fan 506). Thus, air (see arrow A) will flow through the chimney 380 through the plurality of air channels 690 around the volatile plume (see arrow P), while the volatile plume exits from the passage 492 of the annular wall 490. In some embodiments, the air flow (see arrow A) can completely surround the volatile plume (see arrow P) exiting the passage 492 of the annular wall 490. The air flow from the fan 506 (see arrow A) aids in the dispersion of the volatile plume (see arrow P). In other words, the air flow generated by the fan 506 (see arrow A) aids in dispersing the volatile plume (see arrow P) further away from the dispenser 350, thereby allowing the volatile plume to cover an additional area. In some embodiments, the fan 506 allows the volatile plume to reach a larger area around the dispenser 350. In some embodiments, the dispenser 350 may not include the fan 506.

[0148] Still referring to ​ , the spring wire 622 of the spring 620 can include a diameter of 0.55 mm, i.e., the wire diameter. In some embodiments, the spring 620 can include an uncompressed height between about 5.0 mm and about 12.0 mm or about 8.0 mm, i.e., the height taken along a direction parallel to the longitudinal axis 80. In some embodiments, the spring 620 can have a number of turns between about 2 turns and about 10 turns or about 5.5 turns. In some embodiments, the top end 654 of the spring 620 can include a coil diameter, i.e., the overall spring diameter taken along a line perpendicular to the longitudinal axis 80, which is less than the coil diameter at the bottom end 656 of the spring 620. In some embodiments, the top end 654 of the spring 620 can include a coil diameter of about 12.9 mm and the bottom end 656 of the spring 620 can include a coil diameter of about 16.0 mm. Additionally, in some embodiments, the top end 654 and the bottom end 656 of the spring 620 can include the same coil diameter (see ​)。In some embodiments, the spring 620 has an uncompressed height of approximately 8.0 mm. Additionally, in some embodiments, when the spring 620 is compressed to a length of approximately 5.0 mm, i.e., taken along a direction parallel to the longitudinal axis 80, the force of the spring 620 is approximately 28 gf (0.3 N).

[0149] Reference ​ 、 ​ 、 ​ 、 ​ and ​ , a method of inserting a refill 352 into a bracket assembly 440 and an assembled dispenser 350 is disclosed. Specifically, the refill 352 is positioned such that its head 176 is inserted into the manifold 450, similar to the position shown in ​ . Then, the refill 352 is moved upward such that the head 176 is inserted into the manifold 450. Once the edge 152 of the refill 352 engages the detent 236 of the protrusion 150, the refill 352 can be characterized as being fixed within the manifold (see ​ ). In some embodiments, a lid 146 (see ​ ) can be inserted into the receiving cavity 460 of the platform 442 to securely hold the lid 146 when using the refill 352. Once the refill 352 is fixed to the chassis 446, the cover 354 can be inserted onto the bracket assembly 440. Specifically, the cover 354 is aligned with the base 356 and then rotated until the retaining protrusion 564 of the base 356 engages the retaining feature 580 along the bottom surface 480 of the cover 354 (see ​ ). Thus, when the cover 354 is rotated, the retaining protrusion 564 of the base 356 slides into the retaining feature 580 of the cover 354 to fix the cover 354 to the base 356.

[0150] Return to reference ​, the button 410 can be configured to turn on the dispenser 350 and switch between different settings. For example, if the button 410 is pressed for more than 1 second, the dispenser 350 can be powered on, that is, turn on the piezoelectric component 110, the LED, and the fan 506. In some embodiments, once the dispenser 350 is turned on, if the button 410 is pressed again for less than 1 second, the dispenser 350 can change the settings. For example, the light can change color or brightness, the fan 506 can increase or decrease its speed, the fragrance intensity can change, and / or the duty cycle of the piezoelectric component 110 and / or the fan 506 can change. As described herein, the duty cycle of the piezoelectric component 110 and the fan 506 defines the intervals during which the piezoelectric component 100 and the fan 506 are turned on and off. In a preferred embodiment, the duty cycle of the piezoelectric component 110 and the fan 506 is 7 seconds on and 30 seconds off. Thus, the piezoelectric component 110 and the fan 506 will be turned on for 7 seconds, then turned off for 30 seconds, then turned on again for 7 seconds, and so on. It is contemplated that the piezoelectric component 110 and the fan 506 can include any type of duty cycle. Additionally, depending on the settings of the dispenser 350, the dispenser 350 can be capable of changing the duty cycle times of the piezoelectric component 110 and the fan 506.

[0151] As described herein, the dispenser 350 is configured to be used in an outdoor environment. Thus, as described above, the dispenser 350 is waterproof and dustproof. In particular, once the sealing engine 508 is sealed to the platform 442, the sealing engine 508 can be waterproof. Thus, the electronic components within the sealing engine 508, namely the PCB 590, the LED 592, and the motor 552, can be protected from rain or other external outdoor factors. In some embodiments, when the device is not in use, a lid (not shown) can be placed on the piezoelectric component 110 and / or the chimney 380 to further protect these elements from the environment. Additionally, in some embodiments, the plurality of vents 398 in the base 356 can also provide drainage through the dispenser 350. Moreover, since the dispenser 350 is configured for / provides outdoor protection, the LED 592 can also provide sufficient outdoor lighting for the user.

[0152] In some embodiments, the dispenser 350 can integrate IoT (Internet of Things) functionality. For example, in some embodiments, the dispenser 350 can be capable of connecting to the Internet, namely WIFI, and / or connecting to a user device, namely a smartphone, a smartwatch, a tablet, etc. Then, the user can customize the settings of the dispenser 350 through the user device. In some embodiments, the user can be capable of turning on / off the dispenser 350, switching the settings or duty cycle of the dispenser 350, switching the color of the dispenser 350 light, and / or determining the remaining battery level on the dispenser 350 through the user device. In some embodiments, the dispenser 350 can be controlled on the user device through an application.

[0153] Any embodiment described herein may be modified to include any structure or method disclosed in connection with other embodiments. Further, although directional terms such as front, rear, top, bottom, vertical, horizontal, etc. may be used in this specification, it is to be understood that these terms are not limiting and are used herein only to express the orientation of different elements relative to each other.

[0154] Industrial applicability

[0155] Dispensers are generally used to dispense various volatile substances stored in refillable containers, such as air fresheners, deodorants, insecticides, fungicides, perfumes, etc. The piezoelectric engine allows the volatile substances to volatilize and then be distributed into the environment so that its contents are released without human intervention, e.g., continuously or according to a predetermined schedule.

Claims

1. A volatile substance dispenser, comprising: A base, which includes a fan and a battery; A bracket assembly, which is coupled to the base, and the bracket assembly includes a platform, a bracket extending from the platform, and a manifold extending from the bracket; A cover, which is located on the base and defines a chimney; And An air deflector, which is located between the cover and the manifold, Wherein, the air deflector is configured to direct air out of the chimney.

2. The volatile substance dispenser according to claim 1, wherein, The air deflector includes a frustoconical shape and includes an air wall.

3. The volatile substance dispenser according to claim 2, wherein, A plurality of air channels are defined by the air wall of the air deflector and the side surface of the manifold.

4. The volatile substance dispenser according to claim 2, wherein, The air wall extends around the manifold.

5. The volatile substance dispenser according to claim 1, wherein, The base further includes a plurality of vents.

6. The volatile substance dispenser according to claim 5, wherein, The base further includes an air isolator having an air inlet hole.

7. The volatile substance dispenser according to claim 6, wherein, The air isolator is located between the fan and the battery.

8. The volatile substance dispenser according to claim 6, wherein, During use, air is configured to flow into the plurality of vents, through the air inlet hole of the air isolator, and out of the chimney.

9. A volatile substance dispenser, comprising: A base, which includes a fan and a battery, and the base defines a lower part including a plurality of vents; A bracket assembly, which is coupled to the base, and the bracket assembly includes a manifold, and the manifold includes a piezoelectric assembly; A cover, which defines a chimney; And An air deflector, which is located within the cover, Wherein, during use, air is configured to flow through the plurality of vents and out of the chimney.

10. The volatile substance dispenser according to claim 9, wherein, The base further includes an air isolator and a sealed engine.

11. The volatile substance dispenser according to claim 10, wherein, The sealed engine is located above the fan and below the platform of the bracket assembly.

12. The volatile substance dispenser according to claim 10, wherein, A printed circuit board and a plurality of light emitting diodes are located within the sealed engine.

13. The volatile substance dispenser according to claim 12, wherein, The piezoelectric assembly is connected to the printed circuit board.

14. The volatile substance dispenser according to claim 10, wherein, The fan includes a motor located within the sealed engine.

15. The volatile substance dispenser according to claim 9, wherein, The volatile substance dispenser is configured to be used in an outdoor environment.

16. A volatile substance dispenser, comprising: A base; A bracket assembly, which is coupled to the base, and the bracket assembly includes a manifold, and the manifold includes a piezoelectric assembly; A fan; A refill, which has a core, the refill is removably coupled to the manifold, and the refill includes a volatile substance; And A cover, which is positioned to surround the manifold and the refill, and the cover defines a chimney, Wherein, the manifold includes an annular wall, and the annular wall defines a channel, Wherein, the annular wall is coaxial with the chimney and the piezoelectric assembly, and Wherein, during use, a volatile plume is configured to flow through the piezoelectric assembly, through the channel and the chimney.

17. The volatile substance dispenser according to claim 16, wherein, When the refill is coupled to the manifold, the core of the refill contacts the piezoelectric assembly.

18. The volatile substance dispenser according to claim 16, wherein, The volatile substance dispenser further includes an air deflector fixed to the cover and the manifold.

19. The volatile substance dispenser according to claim 18, wherein, The air deflector is configured to direct air out of the chimney and around the volatile plume.

20. The volatile substance dispenser according to claim 16, wherein, The base further includes a plurality of vents and an air isolator.

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