CN116762005A - Compact scent delivery device and compact scent delivery system - Google Patents
Compact scent delivery device and compact scent delivery system Download PDFInfo
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- CN116762005A CN116762005A CN202280010083.5A CN202280010083A CN116762005A CN 116762005 A CN116762005 A CN 116762005A CN 202280010083 A CN202280010083 A CN 202280010083A CN 116762005 A CN116762005 A CN 116762005A
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Abstract
A compact scent delivery system (300) comprising: -a compact scent delivery device (100, 200), -an air flow mixing unit (400) comprising: -a perfuming air inlet (405) configured to be connected to a perfuming air outlet (125) of a compact scent delivery device, -a mixing perfuming air outlet (410) facing an olfactory port (415), -a duct (420) connecting the perfuming air inlet with a mixing diluting perfuming air outlet, and-at least one of the following elements: -a fresh air inlet (425) configured to be connected to a fresh air delivery device, said inlet delivering fresh air into a perfuming air stream located between the perfuming air inlet and a mixed perfuming air outlet, and/or-a waste perfuming air outlet (430) configured to be connected to an air stream recycling device and/or a waste air discharge device, said outlet recycling perfuming air from the perfuming air stream between the perfuming air inlet and the mixed perfuming air outlet, thereby reducing the air flow, for subsequent dilution or for an associated olfactory port (415) or both.
Description
Technical Field
The present invention relates to a compact scent delivery device and a compact scent delivery system. It is particularly suitable for the fields of olfactory assays, perfumery (superfumery), fine fragrance (fragrance) perfumes, fragrance design and flavour design.
Background
Sensory performance evaluation is an integral part of the development of perfumed or flavoured products such as, but not limited to, air fresheners, perfumed laundry powders, perfumed or flavoured powders, hair care products, fine fragrances, surface cleaners and candles.
In the fragrance industry, sensory evaluation is typically performed by a panel of human subjects, recording the sensory intensity and other characteristics of the fragrance released from "free oil" (fragrance concentrate) or a matrix representing the consumer product class to which the fragrance being developed belongs. For fine fragrances, examples of such substrates may include, but are not limited to, fragrance paper, glass slides, and skin. For laundry detergents, the substrate of interest may be a towel washed with a perfumed detergent. For hair care products, the hair can be used as a substrate for sensory evaluation by washing with a flavored shampoo and/or conditioner. For air fresheners, the substrate can include, but is not limited to, paper products, wood-based or wood-like materials, gels, woven or nonwoven fabrics, and polymer-based products such as plastics.
Such an assessment may be performed in a large ventilation space, such as a cabin or room having a volume of about two cubic meters or more, where a fragrance source (e.g. a flavored product or substrate or free oil) is placed somewhere in the cabin, allowing ventilation at a defined air flow or ventilation rate (ventilation rate) for a defined time in the cabin, filling the cabin with fragrance, and then smelling or entering the cabin space through a window in the cabin door.
There are many limitations and disadvantages to using cabins and rooms for sensory evaluation. First, the scale and number of such dedicated facilities required for parallel product development and evaluation requires a large amount of floor space and construction investment. Second, such facilities are not transportable and the place of sensory evaluation is inflexible. Finally, due to the large and fixed size, and limited ventilation capacity in terms of the available air ventilation rate, such facilities have limited conditions for performing sensory evaluation, particularly with respect to the degree of dilution of the fragrance in air, which is a problem for development and testing of consumer fragrance products in numerous applications.
In particular, the evaluation of the fragrance trail (also called "fragrance" in french) of fine fragrances is associated with the technical problems described above. Trail performance is a key attribute and selling point of fine fragrances required by consumers worldwide. A robust, flexible and differentiated method of fine fragrance trail performance assessment is critical for developing quality consumer products, but a device with flexibly set airflow dilution, compact footprint and transportable format is needed that can produce a true human fragrance trail for assessment, which is not yet met in the fragrance industry. Fragrance trail is a specific example, and this need is not limited to trail but includes other classes of perfumed products where assessing fragrance performance under real conditions of consumer use is essential for developing a quality product.
In the specific example of fragrance trails, attempts have been made in the prior art to meet this need, but they are inadequate because the basic engineering design principles of the device for evaluating fragrance trails do not provide an accurate representation of a real human trail. For example, various air convection prototypes have been proposed to provide a distance between a fragrance source and an evaluation point through a duct or channel in an attempt to replicate the distance between a fragrance attachment and an evaluator; however, when fresh air is delivered to a fragrance source by a rotating fan, the flavored air is quickly and thoroughly mixed, thereby greatly reducing or completely eliminating the dependence of air dilution on distance within such devices, making it unsuitable for simulating the complete conditions associated with human fragrance tails. Other attempts to introduce the concept of fragrance evaluation are limited by the large size of the fragrance emitting device and the open design of the downstream perfuming air channels, so that the device is not transportable and the degree of vapor-phase dilution of the fragrance being evaluated cannot be precisely controlled. These attempts are limited by the above: the scale and footprint of the assessment method, lack of repeatability, and in particular the inability to replicate realistic fragrance trail conditions.
Unlike many other odor performance attributes, the trail is related to movement. This may be the movement of the person attaching the fragrance (walking) or the movement of the air around the person (wind or ventilation) or both (person walking on the street, exposed to natural wind). The exercise causes a degree of air convection, taking the fragrance away from the fragrance source (person attaching the perfume) and letting the other person smell the fragrance. The wake performance of a fine fragrance is typically determined by the maximum distance from the fragrance source at which the perfume is at least perceived by, and preferably recognized by, the other person. It is worth noting that whenever a significant gas phase concentration gradient is present, such as ambient odorless air, the degree of dilution of the fragrance in the air is closely related to the distance of the fragrance source being evaluated.
Currently, there is no satisfactory system in the prior art that can provide a realistic, fast, repeatable, compact and transportable solution for sensory evaluation of fragrance performance that would be suitable for a variety of consumer product categories, air fresheners, cleaning products, laundry products, candles, twist-on (reeds) and body care products. Furthermore, there is no satisfactory system that can provide a realistic, fast, repeatable, compact and transportable solution for the sensory evaluation of the wake performance of a fragrance (e.g. a fine fragrance).
Prior systems such as disclosed in document US20190128782 are known. This document discloses a device and related method for specifically evaluating the "mark" (trail) performance properties of a fragrance. The device is essentially a long straight tube with several olfactory ports at different distances from the source of fragrance. At one end of the tube, the fragrance sample was placed in front of a fan which blown fresh air through the fragrance sample at a speed of about 0.7 m/s. The flavored air is then delivered from the fragrance source by convection of the fan and evaluated at one or more olfactory ports along the length of the tube.
Such a system requires a large space, does not provide a large flexibility of operation conditions, and the reproduction accuracy of the wake phenomenon is low. In particular, since the rotating air flow from the fan rapidly mixes the fragrance into the air and no additional fresh air is introduced between the fragrance source and the olfactory ports, the fragrance headspace delivered in the tube becomes a distance-invariant after a very short distance from the fragrance source upstream of the first olfactory port, which means that after the device reaches steady state mode of operation, the fragrance concentration in the air delivered at the subsequent downstream port of the device is substantially the same.
Prior systems such as disclosed in document US6067842 are also known. This document discloses an olfactometer comprising an olfactory port, a sample supply means for generating a sample stream consisting of carrier gas from a saturation chamber and a sample headspace and for supplying the sample stream to the olfactory port, a carrier gas supply means and a mixer for a predetermined dilution of the sample stream. The carrier gas source includes a mass flow controller having a variable flow rate disposed before the saturation chamber for providing a variable carrier gas flow to the saturation chamber. A plurality of capillaries of different diameters connect the mixing device to the olfactory port via separate syringes. The computer may be connected to an olfactometer to adjust the amount of sample and/or carrier gas in the sample stream.
However, such systems, while optimized for olfactory determination of low odor samples, have significant drawbacks for the subject of evaluating the fragrance performance of consumer products under the real conditions of product use. The most obvious disadvantage is the design of the saturation chamber, which cannot accommodate most full-sized perfuming consumer products to be placed in the device to generate perfuming air. A second drawback is how the source of the fragrance is affected by the air flow (ventilation) in the saturated chamber, the lack of flexibility in design and operating parameters, the inability to subject the perfumed product in the chamber to different degrees of direct air convection, the latter being important for controlling the kinetics of evaporation and ageing of the perfumed product.
Prior systems such as disclosed in document US20090320559 are also known. Such a system is directed to a device for evaluating a fragrance property of a substance, the device comprising a cylindrical chamber in which a block for supporting the substance (e.g. fragrance to be evaluated) is positioned. The airflow generated by the fan passes through the chamber, surrounds the substance, and exits the chamber via a main outlet and a plurality of sensing outlets, each of which is provided with a metering valve to direct the airflow to a respective nasal mask. One sniffs two to three air flows from the mask and records the results on a pre-prepared table.
There are also a number of disadvantages to such systems: (1) The inlet airflow generated by the fan introduces a swirling flow into the chamber, which increases the air mixing inside the scent generating chamber, thereby impairing the function of the airflow shroud placed inside the chamber; (2) The absence of the design of an auxiliary dilution of the perfuming air leaving the main chamber significantly reduces the ability of the device to simulate the real use conditions of the perfuming product, and makes it impossible to individually control the evaporation kinetics of said product and the intensity of the smell they present to the human panelist.
Disclosure of Invention
The present invention aims to overcome all or part of these disadvantages.
To this end, according to a first aspect, the present invention aims to provide a compact scent delivery device comprising:
-a dynamic airflow chamber comprising:
the inlet of fresh air is provided with a fresh air inlet,
-a fragrance source support,
-a fragranced air outlet, and
-the fragrance source support being located within the chamber between the inlet and the outlet along the flow of air through the chamber.
Such provision allows the use of a dynamic system that is affected by a continuous airflow, providing the perfuming air according to the characteristics of the airflow at the inlet (in addition to the characteristics of the perfuming product placed inside the device).
In a particular embodiment, the chamber comprises:
a fresh air inlet facing a reflective surface configured to disperse and reflect air towards the fragrance source support,
-a reflecting surface of the light-emitting diode,
a fragrance source support, which in some embodiments of the invention may be perforated, located between the inlet and the outlet along the air flow through the chamber,
-a fragranced air outlet, and
-a narrowing airflow guide located between the fragrance source support and the outlet along the airflow through the chamber.
These regulations allow to circumvent the above limitations by providing a shrinking device intended to replace the test pods commonly used in the fragrance industry to evaluate the performance of fragrances in various consumer product forms.
Despite the small footprint, the device of the present invention aims to accommodate full-size consumer products and reproduce the olfactory performance observed in sensory cabins, rooms and other consumer end-use environments. The device may be designed with adjustable operating parameters that can accommodate changing business needs, customer requirements, and different geographic locations.
Furthermore, these regulations:
increases the bandwidth of the sensory test and brings sensory test capability to the evaluators who are not fit for the full-size test pod,
by incorporating better, more stringent evaluation conditions and methods (e.g. rooms of different sizes, different distances from fragrance sources, etc.) early in the development process,
provides excellent capability to demonstrate product performance, and
providing a hygienic assessment across classes of fragrances (fragrances on skin, hair, deposition on fabrics, etc.).
In certain embodiments, the fragrance source support comprises an airflow guide.
Such an embodiment allows to accurately reproduce the effect of a larger air volume on an equivalent fragrance sample located in the open air.
In certain embodiments, the fragrance source support comprises a perforated surface, the perforations of which form an airflow guide.
Such embodiments provide the dual advantages of fragrance supports as well as airflow guides in a single article.
In certain embodiments, the perforated surface (also acting as a fragrance support) spans the cross section of the chamber.
Such an embodiment forces the airflow into the perforations, thereby providing additional control over the airflow distribution within the chamber.
In a particular embodiment, the device object of the invention comprises a perforation adaptation device configured to close/open at least one perforation of a surface.
Such an embodiment allows for dynamic adjustment of the operating parameters of the device, such as the evaporation kinetics of the fragrance product placed in the chamber.
In a particular embodiment, the opening of the air inlet located within the chamber is less than or equal to three times the width of the opening from the reflective surface.
Such an embodiment allows for an optimal circulation of air within the chamber.
In a particular embodiment, the inlet extends longitudinally within the chamber, the inlet comprising a fixture for a fragrance source support.
According to a second aspect, the present invention is directed to a compact scent delivery system comprising:
the object of the compact scent delivery device of the present invention,
-a gas flow mixing unit comprising:
a fragranced air inlet configured to be connected to a fragranced air outlet of a compact scent delivery device,
a mixed perfuming air outlet, directed towards the olfactory port,
a duct connecting the perfuming air inlet with the mixing perfuming air outlet,
-at least one of the following elements:
-a fresh air inlet configured to be connected to a fresh air delivery device, the inlet delivering fresh air into a perfuming air flow located between the perfuming air inlet and the mixed perfuming air outlet, and/or
-a waste fragranced air outlet configured to be connected to an air flow recovery device, the inlet recovering fragranced air from the fragranced air flow between the fragranced air inlet and the mixed fragranced air outlet, thereby reducing the air flow.
These arrangements provide similar advantages as the compact scent delivery device object of the present invention, as well as additional improvements allowing for dynamic adjustment of the airflow provided to the scent ports and additional control of the scent concentration (intensity) delivered to the scent ports. This allows to simulate how consumers perceive fragrances at different distances from the fragrance source by adjusting the air flow rate at the fresh air inlet, the waste perfuming air outlet flow rate, and by additional fresh downstream auxiliary dilution of the scent delivery device, even if a standard vial is used.
In certain embodiments, the duct includes at least one elbow or flow altering device to enhance air mixing.
Such an embodiment allows for improved mixing within the airflow.
In a particular embodiment, the system object of the present invention comprises at least two of the following elements:
-a fresh air inlet configured to be connected to a fresh air delivery device, the inlet delivering fresh air into a perfuming air flow located between the perfuming air inlet and the mixed perfuming air outlet, and/or
A waste fragranced air outlet configured to be connected to an air flow recovery device, the inlet recovering fragranced air from a fragranced air flow between a fragranced air inlet and a mixed fragranced air outlet of a compact scent delivery device to an olfactory/evaluation port,
wherein a bend or other flow altering device for enhancing air mixing is located between the two said elements.
Such an embodiment allows for a reduction in size, noise and air flow pump requirements, allowing for a greater dynamic dilution range in a small space.
In particular embodiments, the conduit includes a needle or any other geometric obstruction in the airflow path configured to increase mixing within the conduit.
Such an embodiment allows for improved mixing within the airflow duct.
In a particular embodiment, at least one fresh air inlet or waste perfuming air outlet is oriented perpendicular to the air flow interacting with at least one of said fresh air inlet or waste perfuming air outlet.
Such an embodiment allows for less turbulence or flow disturbances to be created within the airflow.
In a particular embodiment, the system object of the invention comprises a heating device configured to flow air from an inlet to an outlet.
Such an embodiment provides for ease of cleaning of the pipes of the system.
In certain embodiments, the system object of the present invention includes an air flow restrictor upstream of the mixed flavored air outlet or olfactory/assessment port.
Such an embodiment allows for additional adjustments to the airflow rate.
In a particular embodiment, the system object of the present invention comprises at least one pump or compressed air source connected to the fresh air inlet or the waste perfuming air outlet.
In a particular embodiment, the system object of the present invention comprises an electronic command unit comprising:
-dilution and/or discard ratio determination means, and
-at least one mass flow controller connecting at least one of said pump or compressed air source to a fresh air inlet or a waste perfuming air outlet, and
-command means configured to transmit an actuation command to at least one of said mass flow controllers according to the determined dilution and/or discard ratio.
Such an embodiment allows for dynamic start-up and control of the system.
In a particular embodiment, the command unit further comprises a scent trail simulation means, the start command being sent by the command means in dependence of parameters simulating scent trail.
Such an embodiment allows for simulation of scent wake in terms of airflow and dilution, matching the user's perception of real life wake conditions.
In a particular embodiment, the system object of the present invention comprises a virtual reality headset or electronic display, the dilution and/or discard ratio being determined according to the execution parameters of said virtual reality headset or electronic display.
Such an embodiment allows for matching the scent dilution delivered by the scent delivery system to the virtual distance between the user and the virtual scent source in the virtual environment.
In certain embodiments, the air dilution ratio performed by the scent delivery system decreases or increases over time.
In a specific embodiment, the system object of the present invention comprises at least two compact scent delivery devices of the present invention, and for each compact scent delivery device comprises a mixing unit, the system further comprising a perfuming air mixer connected to the mixing air outlet of each of the mixing units, the perfuming air mixer further comprising a mixing perfuming air outlet towards the olfactory port.
Such an embodiment allows for the mixing of fragrances.
In a particular embodiment, the compact scent delivery device is positioned such that the fragranced air outlet is higher than the fresh air inlet of the device.
In a specific embodiment, the system object of the present invention comprises at least two compact scent delivery devices, the system further comprising a fragrance source selector configured to alternately connect the perfuming air inlet with one compact scent delivery device.
In certain embodiments, the system object of the present invention includes a moisture capture device and/or an activated carbon capture device positioned along the airflow through the system.
Such an embodiment allows for optimal operation of the system, avoiding deactivation due to the presence of unwanted moisture or chemical compounds within the system.
According to a third aspect, the present invention is directed to an assembly for forming a system object of the second aspect of the present invention, comprising:
a compact scent delivery device according to the first aspect of the invention,
-a gas flow mixing unit comprising:
a fragranced air inlet configured to be connected to a fragranced air outlet of a compact scent delivery device,
a mixed perfuming air outlet, which is directed towards the olfactory port,
A duct connecting the perfuming air inlet with the mixing perfuming air outlet,
-at least one of the following elements:
-a fresh air inlet configured to be connected to a fresh air delivery device, the inlet delivering fresh air into a perfuming air flow located between the perfuming air inlet and the mixed perfuming air outlet, and/or
-a waste fragranced air outlet configured to be connected to an air flow recovery device, the inlet recovering fragranced air from the fragranced air flow between the fragranced air inlet and the mixed fragranced air outlet, thereby reducing the air flow at the olfactory port.
The advantages of this form are similar to those previously disclosed above.
According to a fourth aspect, the present invention aims to provide an odour delivery method comprising:
an injection step of injecting air into the compact scent delivery device according to the first aspect of the present invention,
an injection step of injecting the perfuming air from the outlet of the compact scent delivery device into the air flow mixing unit,
-a providing step of providing fresh air into the perfuming air flow in the mixing unit and/or recovering waste perfuming air from the mixing unit.
Such a form exhibits the same advantages as the system object of the present invention.
In a particular embodiment, the method object of the invention comprises: a determining step of determining a perfuming air dilution ratio; at least one providing step and/or retrieving step, which operates providing and/or retrieving according to the determined ratio.
Such a form exhibits the same advantages as the system object of the present invention.
In a particular embodiment, the ratio determined during the determining step is determined from simulated parameters of the distance between the scent source and the location where the scent is perceived, which distance affects the intensity, perceptibility and/or recognizability of the fragranced air at the outlet of the scent delivery device.
Such a form exhibits the same advantages as the system object of the present invention.
Drawings
Other advantages, objects and specific features of the invention will become apparent from the following non-exhaustive description of at least one specific apparatus or system, which is an object of the invention, taken in conjunction with the accompanying drawings, in which:
figure 1 schematically shows a first embodiment of the device object of the invention,
figure 2 schematically shows a second embodiment of the device object of the invention,
figure 3 schematically shows a first view of a first specific embodiment of the system object of the invention,
Figure 4 schematically shows a second view of a first specific embodiment of the system object of the invention,
figure 5 schematically shows a third view of a first specific embodiment of the system object of the invention,
figure 6 schematically shows a series of steps of a specific embodiment of the method object of the invention,
figure 7 is a diagram schematically illustrating a second particular embodiment of the system object of the present invention,
FIG. 8 is a diagram schematically illustrating a third particular embodiment of the system object of the present invention
Fig. 9 is a schematic representation of a view of a particular embodiment of the fragranced flow circuit object of the present invention.
Detailed Description
The description is not exhaustive, as each feature of one embodiment may be combined with any other feature of any other embodiment in an advantageous manner.
It should be noted at this point that the drawings are not drawn to scale.
The term "fresh air" is intended to be devoid of at least any predetermined fragrance. Preferably, such fresh air is intended to lack any type of fragrance, thereby providing a more realistic experience of the fragrance contained within the compact scent delivery device 100 to the user. Such fresh air may be, for example, ambient air, or air exhibiting a predetermined composition and located within a storage unit accessible to the device 100.
The term "fragrance source" may refer to any kind or combination of fragrance ingredients, such as air freshener products, fragrance treated various substrates (paper, tile, towel, hair, etc.), powders, liquids, and/or candles.
Fig. 1 and 2 each illustrate a particular embodiment of the apparatus 100 and 200 of the subject of the present invention. Such a compact scent delivery device 100 or 200 comprises:
-a dynamic airflow chamber 105 comprising:
fresh air inlet 110, which is preferably dried (e.g. by moisture capture 355) and filtered (e.g. by activated carbon 356 filter) of contaminants,
a fragrance source support 120 or 220,
a fragranced air outlet 125, and
a fragrance source support 120 or 220 located within the chamber between the inlet and the outlet along the flow of air through the chamber.
The chamber 105 is configured not to be in equilibrium. In other words, it is configured to be continuously vented so that a dynamic headspace chamber can be created.
Fig. 1 shows a specific embodiment of the device 100 of the present invention. In this compact scent delivery device 100, the chamber 105 includes:
a fresh air inlet 110, said inlet facing a reflective surface 115, the reflective surface 115 being configured to disperse and reflect air towards the fragrance source support 120 or 220,
-a reflecting surface of the light-emitting diode,
a fragranced air outlet 125, and
a narrowing airflow guide 130 located between the fragrance source support and the outlet along the airflow through the chamber.
The chamber 105 may be defined as a volume of predetermined size enclosed within a housing. The housing may be formed of any material that is preferably impermeable to the chemical constituents passing through the chamber 105. The housing is preferably formed of a rigid material that does not have the ability to expand at the operating pressure of the device 100, thereby forcing air to flow through at a constant pressure applied by the pressure of the fresh air inlet 110.
The chamber 105 may be formed from a plurality of interconnectable components. In a particular example, the chamber 105 is formed from two components joined at a cross section of the chamber 105.
The fresh air inlet 110 may be formed by an opening in the chamber 105. The inlet 110 may be associated with any type of temporary or permanent fixture configured to fit a duct to deliver fresh air to the inlet 110. The conduit may in turn be connected to a fresh air supply, such as a pump or a compressed air reservoir.
The inlet 110 preferably provides an opening near the reflective surface 115 of the device 100. In this variation, the distance from the opening of the inlet 110 to the reflective surface 115 may correspond to less than 20% of the height of the chamber 105, or less than 10% of the height of the chamber 105. The height of the chamber is defined by the general axis, for example the cylindrical symmetry axis of the chamber where such geometric symmetry exists, which the airflow follows within the chamber 105. Preferably, the device 100 is configured to be vertically positioned with the opening of the inlet 110 facing downward and the outlet 125 positioned above the opening such that the height of the chamber 105 may be generally defined as an axis that is parallel to an axis defined by the openings of the inlet 110 to the outlet 125 or an equivalent thereof.
Preferably, the opening of the inlet 110 located within the chamber 105 is less than or equal to three times the diameter of the opening from the reflective surface 115.
Forcing the airflow to flow vertically, i.e. along a vector comprising at least one component opposite to gravity, allows the perfuming air to be ventilated uniformly and consistently, while avoiding accumulation.
Preferably, the device 100 is configured to be vertically oriented with the reflective surface 115 at the bottom of the device 100.
Similarly, the fragranced air outlet 125 may be formed by an opening in the chamber 105. The outlet 125 may be associated with any type of temporary or permanent fixture configured to fit a duct to the fragranced air from the outlet 125 to the olfactory port or to the mixing unit 400, as shown in fig. 3-5.
Within the chamber, the circulation of the air flow is optimised so as to provide an air flow that exhibits fragrance delivery and dilution parameters similar to the environment of the fragrance source in a large volume of air, corresponding to perceived intended use of the fragrance.
To optimize the airflow through the chamber 105, the chamber 105 includes a reflective surface 115, and the airflow entering the inlet 110 is directed toward the reflective surface 115.
The reflective surface 115 may be part of a housing surrounding the interior volume of the chamber 105 or a dedicated surface secured within the chamber. The purpose of the reflective surface 115 is to spread (disperse, distribute, spread) the gas flow entering the chamber 105 over the entire cross section of the chamber. Thus, the fragrance source is indirectly contacted by the air flow entering the chamber 105.
The reflective surface 115 may be formed to direct the airflow toward a predetermined direction within the chamber 105. This variation is shown in fig. 2, where the reflective surface 115 is convex in shape. The reflective surface may also consist of a concave curvature in combination with a convex curvature and a concave curvature.
To further optimize the airflow circulation within the chamber 105, the chamber 105 includes a narrowing airflow guide 130. In this context, the term "narrowing" is not limited to circular or elliptical or conical cross-sections. The airflow guide 130 preferably presents a cross-sectional surface that gradually decreases along the airflow, regardless of the cross-sectional shape. In other words, the upper portion of the chamber 105 may be tapered.
The chamber 105 is designed to create a circulation of air flow in the vicinity of the fragrance source. The fragrance source is supported by a fragrance source support 120, the fragrance source support 120 can take a variety of shapes, provided that the fragrance remains on the support 120 when the device 100 is stationary and in an operating condition.
In one variation, as shown in fig. 1, the support 120 spans the entire cross-section of the chamber 105. In another variation, as shown in fig. 2, the support 220 spans only a portion of the cross-section of the chamber 105.
In certain embodiments, as shown in fig. 1 and 2, the supports 120 and 220 include perforated surfaces 121. In such embodiments, the perforations 135 may span the entire cross-section of the chamber, which is substantially perpendicular to the overall direction of the airflow (the cross-sectional width of the surface 121), the perforations 135 behaving like tubes in which air is forced to flow. In such variations, the perforations form an airflow guide 135. In a variant, the perforations span only a portion of the width of the surface 121.
In certain embodiments, the perforated surface 121 spans the entire cross-section of the chamber 105.
In a particular embodiment, the device 100 of the present invention comprises a perforation adaptation device 135 configured to close/open at least one perforation of the surface.
In a simple embodiment, the perforation adapter 135 may be a surface configured to block all or part of the perforation surface 121. In more complex embodiments, at least one perforation may be dynamically opened or closed according to an activation/deactivation command. Such dynamic opening/closing may be obtained, for example, via mechanical actuators such as those used in microfluidic systems. Such an actuator may be obtained by a micro-valve supplying fluid to an inflatable bag configured to expand and block the perforation upon actuation of the respective micro-valve.
The perfumed product or fragrance source may be lifted from the bottom of the device 100 or 200 and placed on a height adjustable support/base, which may be the same as the previously described perforated support, which is lifted from the bottom of the device 100 or 200 so that the flow profile is determined and consistent before the fragrance source is reached. According to an embodiment, the base/support may comprise an array of holes for air permeation.
Preferably, the support 120 or 220 is located before the narrowing airflow guide 130 along the airflow through the chamber 105.
In certain embodiments, the support 120 or 220 is located at the bottom third of the height of the chamber 105.
Fig. 2 shows a specific embodiment of the device 200 of the present invention. In this compact scent delivery device 200, the chamber 105 includes:
a fresh air inlet 110, said inlet facing a reflective surface 115, the reflective surface 115 being configured to disperse and reflect air towards the fragrance source support 220,
-a reflecting surface of the light-emitting diode,
a fragranced air outlet 125,
a fragrance source support 220 located within the chamber and between the inlet and the outlet along the flow of air through the chamber, and
a narrowing airflow guide 130 located between the fragrance source support and the outlet along the airflow through the chamber.
In this embodiment, the inlet 110 extends longitudinally within the chamber 105, the inlet comprising a mount 240 for a fragrance source support. Such an embodiment allows for a more accurate airflow design.
The fixture 240 is, for example, a ridge on an outer surface of the inlet 110 within the chamber 105 that is configured to be associated with a corresponding annular clamp of the fragrance source support 220.
Fig. 2 shows a specific embodiment of the object of the device 200 of the invention. The device 200 comprises a micromixer 101 or any similar liquid phase mixer configured to mix the fragrance with its individual components in the liquid phase and deliver the liquid fragrance to a substrate, such as a robotic pipette (robotics pipette), which dispenses the fragrance on a fragrance support.
In a particular embodiment, as shown in FIG. 3, the apparatus 200 includes a moisture capture device 355, such as a condenser, positioned along the airflow through the system.
In a particular embodiment, as shown in fig. 3, the apparatus 200 includes an odor capture device 356, such as an activated carbon filter or cartridge, positioned along the airflow through the system.
Fig. 3 illustrates a particular embodiment of a system 300 object of the present invention. The compact scent delivery system 300 includes:
a compact scent delivery device 100 or 200, corresponding to any of the variants of the device 100 or 200 disclosed in fig. 1 or 2,
-a gas flow mixing unit 400 comprising:
a fragranced air inlet 405 configured to be connected to the fragranced air outlet 125 of the compact scent delivery device 200,
a mixed fragranced air outlet 410, which faces an olfactory port 415 or 416,
A conduit 420 connecting the perfuming air inlet with the mixing perfuming air outlet,
-at least one of the following elements, and preferably at least one of each of the following elements:
a fresh air inlet 425 configured to be connected to a fresh air delivery device, said inlet delivering fresh air into a perfuming air stream located between the perfuming air inlet and the mixed perfuming air outlet, and/or
A waste fragranced air outlet 430 configured to be connected to an air flow recovery device, the inlet recovering fragranced air from the fragranced air flow between the fragranced air inlet and the mixed fragranced air outlet, thereby regulating the air flow at the olfactory port.
Preferably, the compact scent delivery device 200 is positioned with the fragranced air outlet 125 vertically higher than the fresh air outlet 110 of the device.
The fragranced air inlet 405 may be formed by an opening of the duct 420. The inlet 405 may be associated with any type of temporary or permanent fixture configured to fit a conduit to transfer the fragranced air from the outlet 125 of the device 200 to the inlet 405 of the mixing unit 400.
The mixed flavored air outlet 410 can be formed by an opening of the duct 420. The outlet 410 may be associated with any type of temporary or permanent fixture configured to fit the olfactory ports 415 or 416 to receive the mixed flavored air from the outlet 410 of the mixing unit 400.
Such an olfactory port may be an olfactory cone 415, nasal cannula, or any other custom shape. In particular embodiments, the olfactory port may comprise an elongated volume 416, preferably vertically positioned, that includes a vent 417 and an optional cap 418 within the volume envelope, allowing the airflow to be redirected toward the user.
In a particular embodiment, at least one fresh air inlet 425 or waste perfuming air outlet 430 is oriented perpendicular to the air flow interacting with at least one of said fresh air inlet 425 or said waste perfuming air outlet 430.
The conduit 420 may be formed by drilling a hole in a single block of material, such as steel. In variations, the conduit 420 is flexible, although these variations provide little design predictability in terms of impact on the intended airflow and are disadvantageous in terms of heating the unit for cleaning.
In other variations, the conduit 420 may be formed by machining the conduit in a block of material, such as an aluminum block, and covering the conduit with another complementary block of material to attach and seal to the block in which the conduit has been machined.
Such a variation 900 is illustrated in fig. 9.
The mixing unit 400 includes at least one of the following elements, and preferably includes at least one of each of the following elements:
A fresh air inlet 425 configured to be connected to a fresh air delivery device, said inlet delivering fresh air into a perfuming air stream located between the perfuming air inlet and the mixed perfuming air outlet, and/or
A waste fragranced air outlet 430 configured to be connected to an air flow recovery device and/or a waste air discharge device, the outlet recovering fragranced air from a fragranced air flow between the fragranced air inlet and the mixed fragranced air outlet as a means of controlling the serial dilution of the fragranced air and adjusting the air flow at the olfactory port.
Such fresh air inlet 425 may be formed by an opening of the duct 420. The inlet 425 may be associated with any type of temporary or permanent fixture configured to fit a conduit to transfer fresh air from a fresh air source to the inlet 425 of the mixing unit 400.
Preferably, the fresh air inlet 425 is connected to a pump or another source of fresh air (e.g., a source of compressed air) and a flow controller configured to inject a determined amount of fresh air into the inlet 425 to dilute the amount of fragrance within the airflow directed to the olfactory port 415, thereby reducing the concentration of fragrance within the airflow.
The fragranced air outlet 430 may be formed by an opening of the duct 420. The outlet 430 may be associated with any type of temporary or permanent fixture configured to fit a conduit to receive the fragranced air from the outlet 430 of the mixing unit 400.
Preferably, the fragranced air outlet 430 is connected to a pump and flow controller configured to extract fragranced air from the conduit 420, thereby controlling the serial dilution of the fragranced air and regulating the airflow at the olfactory port 415. Preferably, the flow rate is kept constant at the fragranced air inlet 405. Preferably, the flow rate at the mixed flavored air outlet 410 remains constant. Such a flow rate at outlet 410 may correspond to a flow rate at inlet 405. In this variation, if fresh air inlet 425 is activated and a determined amount or flow rate of fresh air is injected into the flow from device 200 (or equivalently device 100) to give a dilution of a quantity of fragranced air, outlet 430 extracts the same quantity or flow rate of waste fragranced air in order to keep the flow rate of the flow constant.
In other embodiments, the outlet 430 is connected to a waste air drain.
In other embodiments, the flow rate at outlet 410 is determined, for example, automatically via a computing system, or manually via a mechanical or logical user selection device, based on which inlet 425 and outlet 430 are activated.
In certain embodiments, such as shown in FIG. 3, the conduit 420 includes at least one elbow 435 or other flow modifying device.
The elbow 435 is defined by an abrupt change in direction of the airflow caused by the angle in the conduit 420. Such an angle may typically be 90 degrees. Other values may be used as long as the amount of turbulence within the airflow is consistent with the design intent of the mixing unit 400. Such other values may be, for example, 30, 45, or 60 degrees.
In a particular embodiment, as shown in fig. 3, the system 300 includes at least two of the following elements:
fresh air inlets 425 and 426 configured to be connected to fresh air delivery means, such as a pump or a compressed air source, which delivers fresh air into the perfuming airflow between the perfuming air inlet 405 and the mixed perfuming air outlet 410, and/or
Waste fragranced air outlets 430 and 431 configured to be connected to an air flow recovery device, such as a pump and/or waste air discharge device, that recovers fragranced air from the fragranced air flow between the fragranced air inlet 405 and the mixed fragranced air outlet 410 from the compact scent delivery device to the olfactory/assessment port.
Any combination of any number of inlets 425 and 426 and/or any number of outlets 430 and 431 may be implemented.
In a particular embodiment, as shown in fig. 5, the system 300 further comprises a command unit 310 comprising:
dilution and/or discard ratio determination means 315,
at least one mass flow controller 306 connecting at least one of said pump 305 or compressed air source to fresh air inlet 425 and/or 426 or to waste or discard perfuming air outlet 430 and/or 431, and
-command means 320 configured to transmit an actuation command to at least one of said mass flow controllers according to the determined dilution and/or discard ratio.
For example, command unit 310 is a computer, tablet, or telephone. More broadly, the command unit 310 may be a microcontroller configured to run a computer program on the computing unit, the computer program acting as the dilution and/or discard ratio determination means 315.
The dilution and/or discard ratio determination means 315 is preferably configured to determine the ratio from the gas flow rate and/or the gas phase fragrance concentration at the outlet 125 of the scent delivery means and the gas flow rate and/or the target gas phase fragrance concentration to be reached at the olfactory opening. The vapor phase fragrance concentration may be predetermined and stored in an electronic memory within the command unit 310, or obtained from a user via a computer interface (e.g., keyboard, mouse, or touch screen) and stored in the electronic memory. In a further embodiment, the gas phase fragrance concentration is measured by a fragrance concentration sensor located between the outlet 125 of the device 200 and the inlet 405 of the mixing unit 400.
The target fragrance concentration may be set by the user via a computer interface or determined by the command unit 310. In such a variation, the external parameter value may be responsible for the determined target fragrance concentration.
For example, if the target concentration is one tenth of the concentration at the outlet 125 of the scent delivery device, the dilution ratio may be set to ten. This in turn means that the pump 305 associated with the air inlet 425 or 426 and the associated mass flow controller 306 are configured to inject ten times as much fresh air as the pump or compressed air source (not shown) that provides fresh air to the fresh air inlet 110 of the device 200.
Preferably, pump 305 provides a constant flow of air associated with mass flow controller 306, which mass flow controller 306 is configured to use to provide fresh air to at least one inlet 425 and/or 426 or to push waste air flow to at least one outlet 430 and/or 431.
Since the air flow pressure and speed may not be suitable for the user, the pump associated with the fragranced air outlet 430 or 431 may remove the air flow at the same rate as the pump 305 that provides fresh air to the air inlet 425 or 426. Finally, in this case, the air flow rate remains unchanged, despite the variation in the concentration of the fragrance in the air flow.
The formula for determining the dilution ratio may be:
wherein:
delta represents the dilution ratio and,
-ρ in represents the concentration of the gaseous phase of the fragrance at the inlet 405 of the mixing unit 400, and
-ρ out representing the fragrance atmosphere at the outlet 410 of the mixing unit 400The concentration of the phase is determined by the concentration of the phase,
the formula that allows for determining the actuation of one or more fresh air inlets 425 and/or 426 may be:
Q ∑inlet ＝Δ.Q in
wherein:
-Q ∑inlet representing the sum of the flow rates of the inlets or fresh air inlets 425 and/or 426, and
-Q in representing the flow rate at the inlet 405 of the mixing unit 400.
The formulas that allow for determining the actuation of one or more waste fragranced air outlets 430 and/or 431 may be:
Q Σoutlet ＝|Q out -Q Σinlet -Q in |
wherein:
-Q ∑outlet representing the sum of the flow rates of the outlets or fresh air outlets 430 and/or 431, and
-Q out representing the flow rate at the outlet 410 of the mixing unit 400.
The total fragrance headspace dilution assessed by the system 300 is related to the specific product usage conditions of interest. For example, one scenario to be reproduced for evaluation using the system 300 may refer to placing a given size of air freshener (commercial consumer product) in a given size of room (typical product use environment) that is ventilated twice an hour. Another scenario that system 300 is to reproduce for evaluation is a fragrance trail in which a person applying a fragrance on hair, skin, and/or clothing is walking and leaves behind a fragrance trail that is created by movement and convective transport of the fragrance in the surrounding air.
If an accessory having a reduced cross-sectional area, such as a nasal cannula, is used to present the fragranced air to the nose of a user of system 300, the desired flow rate at the olfactory port may be a minimum of, for example, 0.8L/min. If an open olfactory cone is used, the flow rate required at the olfactory port is in the range of 2 to 20L/min. These flow settings depend on the design of the cone, with general guidance being to deliver the fragranced air at a rate between 0.2m/s and 1m/s for presentation to the evaluator. In a portable/removable embodiment of the system 300, the target flow rate at the olfactory port may preferably be set in the range of 0.8-3L/min, and the size of the olfactory port is selected based on the target flow rate.
The air flow rate through the apparatus 100 or 200 is set according to the size/scale of the container used and the target application. In a portable embodiment of the system 300 for assessing fragrance trail, which utilizes the device 100 or 200 with an internal cavity volume of about 30mL, a flow rate of 20mL/min to 200mL/min is selected, corresponding to a range of 40ACH (ventilation per hour) to 400ACH, respectively, within the device. More desirably, the flow in 30mL device 100 or 200 should be set in the range of 50mL/min to 150 mL/min. In a non-portable embodiment of the system 300 with a more general assessment range (including full-size air fresheners, candles, fragrance tails, etc.), which utilizes an odor release device 100 or 200 of about 10L volume, a flow rate between 0.3L/min and 12L/min is selected, corresponding to a range of 1.8ACH to 72ACH within the device, respectively. More preferably, the flow 100 or 200 in a 10L plant should be set in the range of 0.5L/min to 7L/min, corresponding to 3ACH to 42ACH, respectively.
The first stage of air dilution of the concentrated fragrance headspace emitted from the fragrance source occurs in the fragrance delivery device 100 or 200. This first stage dilution depends on the rate of release of the fragrance from the fragrance source, the air flow rate through the device 100 or 200, the geometry of the fragrance source support, and the orientation of the fragrance surface relative to the main direction of the air flow, although other factors may be present not listed. To describe the fragrance headspace dilution in the device 100 or 200, the headspace concentration at the outlet of the device 100 or 200 is used as the denominator to define the ratio of dilutions. The dilution ratio in the device 100 or 200 is consistent with the test setup and the operating conditions can be predicted by Computational Fluid Dynamics (CFD) or experimentally measured by analytical chemistry techniques such as gas chromatography mass spectrometry.
For a portable implementation of system 300, the goal of which is to reproduce the smelling fragrance at different distances from the fragrance source within the fragrance trail, the following are examples of different operating conditions that may be selected to achieve the desired dilution between the outlet and olfactory ports of device 100 or 100, irrespective of the first step dilution inside device 100 or 200:
The total dilution of the fragrance headspace produced by the device is the product of the first step dilution inside the fragrance delivery device 100 or 200 and the column of "airflow ratios" in the table above, which describes the operational set flow rate of the flow rate in the dilution stream (referred to as "split") and the flow rate in the waste stream (referred to as "waste stream").
For example, if the device 100 or 200 is operated at a dilution ratio of 40, and the total dilution to be achieved by the system 300 is 2000, the dilution ratio in the intermediate step (downstream of the scent delivery device) should be 2000/40=50. This setting corresponds to line 2 of the above table, with a flow rate of 1.5L/min at the olfactory port. The dilution ratio of 50 can also be achieved by other combinations of settings of the dilution and waste streams, particularly if different flow rates are required at the olfactory ports.
Given the achievable intermediate dilution range of 10 to 2,000 exemplified in the table above, portable embodiments of the invention can achieve a total (overall) fragrance vapor phase dilution range of 40 to 80,000 if the device 100 or 200 is operated in the dilution range of 4 to 40. Based on our study of fragrance trails using CFD simulation, system 300 operating in the aforementioned dilution range can reproduce the true fragrance trails from a person with perfume attached, corresponding to 80cm on the body (skin, clothing and/or hair) 2 And 400cm 2 The fragrance deposition area between 0.5 meters and 9 meters from the perfume attachment, although the utility of the device is not limited by the above set of conditions.
Similar operational considerations apply to non-portable embodiments of the system 300 using either 10L device 100 or 200. Given the range of dilution achievable, system 300 in its various embodiments may reproduce from 2m 3 (e.g., 1 mX 2 m) to 100m 3 (6m x 55m x 3 m) and other consumer products, although it may be desirable to operate the system 300 outside of the above-described range based on the size and type of the perfumed product, the system 300 is capable of such flexibility.
The following table shows the optimal operating conditions for the system 300 objectives of the present invention:
for example, the command device 320 is a computer program configured to issue control commands (activation, deactivation, and associated operating parameters) to a mass flow controller, pump, and/or compressed air source.
In a particular embodiment, as shown in fig. 5, the command unit 310 further comprises a scent trail simulation means 325, the start command being sent by the command means 320 according to the parameters of the simulated scent trail.
For example, the wake simulation device 325 is computer software configured to correlate dilution ratios with distance values. The dilution ratio may be linearly or non-linearly related to the distance value. In one such embodiment, the dilution ratio per meter from the fragrance source may be multiplied by ten times.
In such embodiments, the distance value may be predetermined or set by the user via the computer interface. Based on the distance value considered, the wake-up simulation means 325 calculates a dilution ratio, which is then used by the command means 320.
In particular embodiments, as shown in fig. 5, system 300 includes a virtual reality headset 330 or electronic display (not shown) that determines dilution and/or discard ratio based on performance parameters of the virtual reality headset 330 or electronic display.
The virtual reality headset 330 may be of any type known to those skilled in the art, such as oculus lift (registered trademark) or HTC drive (registered trademark). Essentially, the virtual reality headset 330 is an electronic display configured to fit over a user's head so as to immerse the user in a virtual environment as a means of enhancing the user experience.
For example, the electronic display is a computer screen configured to display a user interface that preferably allows user interaction.
An example of an execution parameter of the virtual reality headset 330 or electronic display is a virtual distance separating a user of the virtual reality headset 330 or electronic display from a virtual fragrance source located within a virtual environment. Such an execution parameter may be provided as a distance value to the wake simulation device 325 as described above.
In certain embodiments, the dilution ratio decreases or increases over time.
Such embodiments allow for sensory reproduction by a user near or far from a fragrance source.
In embodiments including an elbow 435, the elbow 435 may be located between the first set of inlets 425 and outlets 431 and the second set of inlets 426 and outlets 430.
The elbow 435 may also be positioned between any two of the elements. For example, elbow 435 may be positioned between inlet 425 and outlet 431.
In certain embodiments, as shown in fig. 3, the conduit 420 includes a needle 440 or any other geometric obstruction in the airflow path, such as a protruding ring or fin, configured to increase mixing within the conduit 420. More generally, a needle is one example of an object having a particular geometry that partially impedes flow through the conduit 420 with the purpose of increasing air mixing within the conduit.
The needle 440 may be formed of any material. Preferably, the selected material is configured to not absorb odors from or release odors into the air flow in which the needle 440 is designed to agitate. The needle 440 may be positioned longitudinally or transversely along the conduit 420.
In certain embodiments, as shown in fig. 3 and 5, the system 300 further comprises a heating device 445, the heating device 445 configured to change the temperature of the airflow path from the inlet 405 to the outlet 410. Heating device 445 is also configured to heat device 100 or 200. In a variation, heating device 445 is configured to heat only a portion of system 300.
Such heating means 445 are for example resistive (ohmic) and are powered by a part of the system 300 or by an electrical energy source external to said system 300. Preferably, the heating device 445 is activated and deactivated by a command system (e.g., a microcontroller).
In particular embodiments, system 300 includes a charcoal filter or other scrubber device connected to one or more outlets 430 and/or 431 for discarding the flavored air.
In a particular embodiment, as shown in fig. 3, the system 300 further includes an airflow restrictor 450 located upstream of the mixed flavored air outlet 410.
Such limiter 450 may be of any type known to those skilled in the art. The restrictor 450 is configured to limit the flow rate of air provided to the user via the olfactory port and to increase the air pressure upstream of the restrictor 450 in the system 300.
FIG. 3 also illustrates a particular embodiment of the component object of the present invention. The assembly forming the system 300 according to any one of fig. 3 to 5 comprises:
a compact scent delivery device 200 such as disclosed with respect to figure 1 or figure 2,
-a gas flow mixing unit 400 comprising:
a fragranced air inlet 405 configured to be connected to the fragranced air outlet 125 of a compact scent delivery device,
A mixed fragranced air outlet 410, which faces an olfactory port 415,
a conduit 420 connecting the perfuming air inlet with the mixing perfuming air outlet,
-at least one of the following elements; and preferably one of each of the following:
a fresh air inlet 425 configured to be connected to a fresh air delivery device, said inlet delivering fresh air into a perfuming air stream located between the perfuming air inlet and the mixed perfuming air outlet, and/or
A waste fragranced air outlet 430 configured to be connected to an air flow recovery device or waste air treatment device, the outlet recovering fragranced air from a fragranced air flow between the fragranced air inlet and the mixed fragranced air outlet, thereby reducing the air flow.
In a particular embodiment, as shown in fig. 3 and 5, the system 300 comprises at least two compact scent delivery devices 200, such as disclosed in relation to fig. 1 or fig. 2, and for each compact scent delivery device 200, separate mixing units 400 and 401, the system further comprises a perfuming air mixer 335 connected to the mixing air outlet 410 of each of said mixing units, said perfuming air mixer further comprising a mixing perfuming air outlet 340 towards its own dedicated olfactory port.
For example, the fragranced air mixer 335 may be a single chamber connected to the outlet 410 of the delivery device 200, the connection between the outlet 410 and the chamber being regulated by a valve that commands the relative amount of airflow from each delivery device 200 into the chamber. Such an embodiment allows dynamic variation of the ratio within the generated mixed gas stream.
In a particular embodiment, as shown in fig. 5, the system 300 includes:
-a mixed perfuming air ratio determining device 345, and
a command means 350 configured to deliver an activation command to at least one pump or compressed air source according to the determined mixed perfuming air ratio.
The command unit 310 may comprise a mixed perfuming air ratio determining means 345 and a command means 350, as shown in fig. 5.
For example, the mixed flavored air ratio determining device 345 is a computer program configured to run a computing system, such program being initiated by a user interface configured to receive user input. In this interface, the user can directly set the ratio, which is used by the command device 350.
The mixed perfuming air ratio may be automatically determined from the values captured by the logical or physical sensors. For example, when the system 300 includes a virtual reality headset, two virtual fragrance sources may be located within the virtual environment, each virtual fragrance source being associated with a particular device 200 and a corresponding mixing unit (e.g., 400 and 401), respectively.
As the user moves within the virtual environment, the user's location approaches either fragrance source, or based on the ratio of distances, the mixing ratio of each corresponding fragrance stream may be determined. Other parameters may be used, such as the direction in which the user is facing in the virtual environment.
Command device 350 is similar to command device 325.
The system 300 of fig. 3-5 may be portable or stationary. Such a system 300 may include an autonomous power source, such as a battery, to power the electronic components of the system 300.
In particular embodiments, system 300 may be used to provide multi-channel operation with the ability to test multiple fragrances simultaneously. In such an embodiment, the system 300 comprises a plurality of devices 100 and/or 200, each device 100 and/or 200 being associated with a dedicated mixing unit 400 and a dedicated olfactory port. In a variant, a plurality of devices 100 and/or 200 are associated with a common mixing unit 400, the system 300 comprising an automatically or manually activated perfuming air input selector. The selector is configured to direct the airflow of only one of the devices 100 and/or 200 to the mixing unit 400. Several mixing units may be placed in parallel and then the resulting fragranced air streams are selectively mixed. Similarly, a plurality of devices 100 and/or 200 may be filled with a mixing unit configured to selectively mix the gas streams originating from the devices 100 and/or 200.
In a particular embodiment, as shown in fig. 4, the system 300 includes a network of gas flow supply 403 and removal line 402.
In a simple variant, one waste perfuming air pump may be connected to one or more waste perfuming air outlets 430 and/or 431 of at least one mixing unit 400 and/or 401. In more complex embodiments, one waste perfuming air pump is connected to a single waste perfuming air outlet 430 or 431 of at least one mixing unit 400 and/or 401. In a more complex embodiment, as shown in fig. 4, the system 300 comprises two waste fragrancing air pumps, each pump connected to a single waste fragrancing air outlet 430 or 431 of four separate mixing units.
In a simple variant, one fresh air pump may be connected to one or more fresh air inlets 425 and/or 426 of at least one mixing unit 400 and/or 401. In more complex embodiments, one fresh air pump is connected to a single fresh air inlet 425 or 426 of at least one mixing unit 400 and/or 401. In a more complex embodiment, as shown in fig. 4, the system 300 includes two fresh air pumps, each pump connected to a single fresh air inlet 425 or 426 of four separate mixing units.
In certain embodiments, components of the system 300 may be subjected to a chemical passivation process.
Typical examples of the system 300 may be:
opening the cover of the device 100 or 200,
placing a source of fragrance (e.g. a fragrance-containing product or substrate) on a height-adjustable support (base) within the device 100 or 200,
closing the lid of the device 100 or 200,
setting the desired air flow rate through the device 100 or 200,
setting the required air dilution ratio for the subsequent serial dilution of the perfuming air exiting the device 100 or 200,
setting the amount of airflow required to dispense the fragranced air for presentation to the evaluator at the olfactory port,
the air flow in the system 300 is started,
allow system 300 to achieve stable operation for 5-30 minutes (depending on implementation and system setup), and
-evaluating the olfactory performance of the fragrance under the above operating conditions by sniffing the expelled fragranced air at the output of the device.
Fig. 6 schematically shows the sequential steps of a particular embodiment of the method 600 object of the present invention. The scent delivery method 600 includes:
an injection step 605 of injecting air into a compact scent delivery device 200 such as disclosed with respect to fig. 1 or fig. 2,
an injection step 610 of injecting the perfuming air from the outlet of the compact scent delivery device into the air flow mixing unit 400,
-a providing step 620 of providing fresh air into the perfuming air flow in the mixing unit; and/or a recovery step 625 of recovering the waste fragranced air from the mixing unit;
a delivery step 630 of delivering the appropriately diluted perfuming air to the olfactory port of the system.
In a particular embodiment, the method 600 object of the present invention comprises: a determining step 615 that determines a perfuming air dilution ratio; at least one providing step 620 and/or retrieving step 625, which operates at least providing and/or retrieving according to the determined ratio.
In a particular embodiment, the ratio determined during the determining step 615 is determined from a simulation parameter of the distance between the source of the scent represented by the fragranced air at the outlet of the scent delivery device and the perceived location or distance of the scent.
For example, the distance may correspond to a virtual distance in an analog environment displayed on a digital screen.
Examples of embodiments of such steps are disclosed in relation to the respective functional descriptions of fig. 1-5.
Fig. 7 schematically illustrates a specific, simplified embodiment of the system 700 object of the present invention. The system 700 is a variation of the system 300 illustrated in fig. 3, including:
Compact scent delivery device 709, which is a variation of scent delivery device 100 illustrated in figure 1,
a fresh air inlet 706 connected to the compact scent delivery device 709 via a mass flow controller 708, said mass flow controller 708 being configured to release fresh air from the inlet 706 according to the flow of fragranced air required by the system 700,
a waste fragranced air outlet associated with a mass flow meter 713, said mass flow meter 713 being connected to a valve 712,
a fragranced air outlet configured to convey air from a compact scent delivery device 709, the compact scent delivery device 709 being associated with a valve 710 and a mass flow meter 711,
an air inlet 705, associated with the mass flow controller 707, configured to dilute the fragranced flow allowed to pass by the valve 710,
a waste fragranced air outlet 715, associated with a valve 714 and a mass flow meter (not shown), and
an olfactory port 716.
Such a system 700 operates in such a way that: the amount (or flow rate) of the fragranced air may be controlled via the mass flow controller 708, and the fragranced air may be sent to waste prior to dilution, diluted, sent to waste after dilution, or sent towards the olfactory port after dilution. The specific ratio of each of these alternatives depends on the determined desired concentration of the fragranced air smelled by the user at the olfactory port, as well as the specifications (size, type, activation) of the fragrance source placed within the scent delivery device 709.
Fig. 8 schematically illustrates a particular embodiment of the system 800 object of the present invention. The system 800 is a pressurized variant of the system 300 illustrated in fig. 3, comprising:
a compressed air source 805 configured to continuously supply fresh air to the compact scent delivery device 806,
two mixing chambers 809 and 810, positioned successively at the perfuming air outlet of the compact scent delivery device 806, such mixing chambers together comprising a variant of the air flow mixing unit 400 illustrated in figure 3 or the air flow mixing unit 900 illustrated in figure 9,
a source of compressed air 808 associated with mass flow controllers 812 and 814, mass flow controllers 812 and 814 associated with each mixing chamber 809 and 810 respectively,
a waste fragranced air outlet 816 associated with an optional carbon fiber filter 807 and mass flow controllers 813 and 815, mass flow controllers 813 and 815 associated with each mixing chamber 809 and 810, respectively, and
an olfactory port 811 configured to receive diluted fragranced air (not sent to waste) for evaluation by a user.
In this variant, any means used in the system disclosed with respect to fig. 5 may also be used.
In this variation, the system 800 as a whole is pressurized creating a pressure gradient that drives the fragranced air flow and fresh air along the entire flow path present in the system 800, including the inlet of the scent delivery device 806, the inlets of the mixing chambers 809 and 810, the waste fragranced air outlet 816, and the olfactory port 811. In this variation, pressurization of the system 800 acts in place of the inlet pump and the waste pump.
In a further variation of any of the systems disclosed above, the fragranced air stream may enter a passive, partially blocked mixing chamber, either before or after dilution, configured to force the air stream along a path that increases the degree of mixing between the fragranced air and the fresh air stream.
It should be appreciated that in some variations, the system is configured to operate under pressurized conditions. In this case, the term "pressurized" means that all or part of the system is operated at a pressure above atmospheric pressure (ambient) and a pressure gradient is established within the device and released at the waste fragranced air outlet and olfactory port.
Claims (28)
1. Compact scent delivery device (100, 200), characterized in that it comprises:
-a dynamic airflow chamber (105) comprising:
-a fresh air inlet (110),
a fragrance source support (120, 220),
-a fragranced air outlet (125), and
-the fragrance source support being located within the chamber between the inlet and the outlet along the flow of air through the chamber.
2. The compact scent delivery device (100, 200) of claim 1, wherein the chamber (105) comprises:
-the fresh air inlet (110), said inlet facing a reflective surface (115), the reflective surface (115) being configured to disperse, reflect and disperse air from the inlet towards the fragrance source support (120, 220),
-a reflecting surface of the light-emitting diode,
-the perfuming air outlet (125), and
-a narrowing airflow guide (130) located between the fragrance source support and the outlet along the airflow through the chamber.
3. The device (100, 200) of claim 2, wherein the fragrance source support (120, 220) comprises an airflow guide (135).
4. A device (100, 200) according to claim 3, wherein the fragrance source support (120, 220) comprises a perforated surface (121, 221), the perforations of which form the airflow guide (135).
5. The device (100) of claim 4, wherein the perforated surface (121) spans a cross-section of the chamber (105).
6. The device (100) according to claim 4 or 5, comprising a perforation adaptation device (135), the perforation adaptation device (135) being configured to close/open at least one perforation of the surface.
7. The device (100, 200) according to any one of claims 2 to 6, wherein the opening of the inlet (110) located within the chamber (105) is positioned at a distance from the reflective surface (115) of less than or equal to three times the width of said opening.
8. The device (200) according to any one of claims 1 to 7, wherein the inlet (110) extends longitudinally within the chamber (105), said inlet comprising a fixture (240) for the fragrance source support.
9. A compact odor delivery system (300), characterized in that it comprises:
the compact scent delivery device (200) according to any one of claims 1 to 8,
-an air flow mixing unit (400) comprising:
a fragranced air inlet (405) configured to be connected to the fragranced air outlet (125) of the compact scent delivery device,
a mixed fragranced air outlet (410) facing an olfactory port (415),
-a duct (420) connecting the perfuming air inlet and the mixed perfuming air outlet, and
-at least one of the following elements:
-a fresh air inlet (425) configured to be connected to a fresh air delivery device, said inlet delivering fresh air into a perfuming air flow located between the perfuming air inlet and the mixed perfuming air outlet, and/or
-a waste fragranced air outlet (430) configured to be connected to an air flow recovery device and/or a waste air discharge device, said outlet recovering fragranced air from the fragranced air flow between the fragranced air inlet and the mixed fragranced air outlet, thereby reducing the air flow for subsequent dilution and/or associated olfactory ports (415).
10. The system (300) of claim 9, wherein the conduit (420) includes at least one elbow (435) or flow altering device.
11. The system (300) of claim 10, further comprising at least two of the following elements:
-a fresh air inlet (425, 426) configured to be connected to a fresh air delivery device, said inlet delivering fresh air into the perfuming air flow between the perfuming air inlet and the mixed perfuming air outlet, and/or
A waste fragranced air outlet (430, 431) configured to be connected to an air flow recovery device and/or a waste air discharge device, said outlet recovering fragranced air from the fragranced air flow between the fragranced air inlet and the mixed fragranced air outlet of the compact scent delivery device to the olfactory/assessment port,
wherein the elbow (435) or flow altering device is located between two of said elements.
12. The system (300) according to any one of claims 9 to 11, wherein the conduit (420) comprises a needle (440) or any other geometric obstruction in the airflow configured to increase mixing within the conduit.
13. The system (300) according to any one of claims 9 to 12, wherein at least one fresh air inlet (425) or waste perfuming air outlet (430) is oriented perpendicular to an air flow interacting with at least one of the fresh air inlet (425) or waste perfuming air outlet (430).
14. The system (300) according to any one of claims 9 to 13, further comprising a heating device (445) configured to flow air from the inlet (405) to the outlet (410).
15. The system (300) according to any one of claims 9 to 14, further comprising an air flow restrictor (450) located upstream of the mixed fragranced air outlet (410).
16. The system (300) according to any one of claims 9 to 15, further comprising one of:
-at least one pump (305) connected to the fresh air inlet (110, 425, 426) or the waste perfuming air outlet (430, 431), or a compressed air source (805, 808) connected to the fresh air inlet (110, 425, 426).
17. The system (300) of claim 16, further comprising a command unit (310), the command unit (310) comprising:
dilution and/or discard ratio determination means (315),
-at least one mass flow controller (306) that directs at least one of:
-the pump (305) is connected to a fresh air inlet (110, 425, 426) or a waste perfuming air outlet (430, 431), or
-a source of compressed air (805, 808) is connected to the fresh air inlet (110, 425, 426), or
-the outlet (430, 431) is connected to a waste fragrancing air handling device (816), and
-command means (320) configured to transmit an actuation command to at least one of said mass flow controllers according to the determined dilution and/or discard ratio.
18. The system (300) of claim 17, wherein the command unit (310) further comprises a scent trail simulation means (325), the start command being sent by the command means (320) according to parameters of the simulated scent trail.
19. The system (300) according to claim 17 or 18, comprising a virtual reality headset (330) or an electronic display, the dilution and/or discard ratio being determined according to an execution parameter of said virtual reality headset or electronic display.
20. The system (300) according to any one of claims 17 to 19, wherein the dilution ratio decreases or increases over time.
21. The system (300) according to any one of claims 9 to 20, wherein the compact scent delivery device (200) is positioned such that the perfuming air outlet (125) is higher in an upward vertical direction than the fresh air inlet (110) of said device.
22. The system (300) according to any one of claims 9 to 21, comprising a moisture capture device (355) and/or an activated carbon capture device (356) positioned along the airflow through the system.
23. The system (300) according to any one of claims 9 to 22, wherein the components of the system 300 subjected to the perfuming air are chemically passivated.
24. The system (300, 700, 800) according to any one of claims 9-23, configured to operate under pressurized conditions above atmospheric pressure.
25. Assembly (500) for forming a system according to any one of claims 9 to 24, characterized in that it comprises:
the compact scent delivery device (100, 200) according to any one of claims 1 to 8,
-an air flow mixing unit (400) comprising:
a fragranced air inlet (405) configured to be connected to the fragranced air outlet (125) of the compact scent delivery device,
a mixed fragranced air outlet (410) facing an olfactory port (415),
-a duct (420) connecting the perfuming air inlet and the mixed perfuming air outlet, and
-at least one of the following elements:
-a fresh air inlet (425) configured to be connected to a fresh air delivery device, said inlet delivering fresh air into a perfuming air flow located between the perfuming air inlet and the mixed perfuming air outlet, and/or
-a waste fragranced air outlet (430) configured to be connected to an air flow recovery device and/or a waste air discharge device, said outlet recovering fragranced air from the fragranced air flow between the fragranced air inlet and the mixed fragranced air outlet, thereby reducing the air flow for subsequent dilution and/or associated olfactory ports (415).
26. An odor delivery method (600), characterized in that it comprises:
-an injection step (605) of injecting fresh air into the compact scent delivery device (100, 200) according to any one of claims 1 to 8,
-an injection step (610) of injecting perfuming air from the outlet of the compact scent delivery device into the air flow mixing unit (400);
-a providing step (620) of providing fresh air into the perfuming air stream in the mixing unit, and/or a recycling step (625) of recycling waste perfuming air from the mixing unit.
27. The method (600) of claim 26, comprising: a determining step (615) of determining a perfuming air dilution ratio; at least one providing step (620) and/or retrieving step (625) operative to provide and/or retrieve in accordance with the determined ratio.
28. The method (600) of claim 27, wherein the ratio determined during the determining step (615) is determined from a simulation parameter of a distance between an odor source and a perceived location of the odor, said distance affecting an intensity, perceptibility and/or recognizability of the fragranced air at an outlet of the odor delivery device.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US202163145813P | 2021-02-04 | 2021-02-04 | |
| US63/145,813 | 2021-02-04 | ||
| EP21200978.1 | 2021-05-10 | ||
| PCT/EP2022/052718 WO2022167588A1 (en) | 2021-02-04 | 2022-02-04 | Compact scent delivery device and compact scent delivery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116762005A true CN116762005A (en) | 2023-09-15 |
Family
ID=87955675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280010083.5A Pending CN116762005A (en) | 2021-02-04 | 2022-02-04 | Compact scent delivery device and compact scent delivery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116762005A (en) |
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2022
- 2022-02-04 CN CN202280010083.5A patent/CN116762005A/en active Pending
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