JP5529448B2 - Method and apparatus for generating multiple types of scents - Google Patents

Description

  The present invention relates to a method for generating a plurality of types of scents and a device for generating a scent that can simultaneously detect a plurality of types of scents with different intensities.

  In recent years, a therapy called aromatherapy has been widely known that uses scent components (fragrances) of flowers and medicinal herbs to soothe nerves and reduce stress to maintain and improve mental and physical health.

  Until now, the presentation of scents has often been performed continuously, and when scents are continuously generated and perceived by humans, the activity of olfactory cells (nerves) decreases and the scent is no longer felt. There is an adaptation problem. Moreover, in the case of presenting fragrances continuously, once the presentation is interrupted, the fragrance usually does not disappear immediately, and there is a problem of the influence of the remaining fragrance where the fragrance remains in the space for a while. .

  Furthermore, recently, with the development of 3D sound and 3D image technology, the need for providing an environment that gives a sense of realism is increasing, and as a means of providing a greater sense of realism, it responds to changes in sound and video. The presentation of olfactory information is attracting attention.

JP 2008-061937 A JP 2009-082273 A

Kaori Otsu, Ami Kadowaki, Yuta Sato, Yuichi Sakauchi, Kenichi Okada, “Pulse injection presentation method of fragrance synchronized with breathing”, Information Processing Society of Japan, Vol.2008, No.7, pp.77-84, ( 2008.1.24)

  The conventional methods of presenting a scent continuously or intermittently to present a realistic scent have the above-mentioned problems of olfactory adaptation and the remaining scent, so video and audio that change over time The scent could not be presented along with the movement. It is known from Patent Documents 1 and 2 or Non-Patent Document 1 that the problem of olfactory adaptation can be solved by injecting a fragrance into a flowing air stream in pulses. However, this method usually makes the viewer feel one kind of scent. In addition, a method for recognizing two kinds of fragrances by separately injecting two fragrances for a short time is also known (Patent Document 1). However, this method merely presents a method for recognizing two kinds of fragrances. However, in combination with video media, it was not possible to create a dynamic production that simultaneously sensed the intensity of multiple types of fragrances.

  An object of the present invention is to solve such a problem and to provide a fragrance generating method and apparatus capable of simultaneously sensing a plurality of types of fragrances with different intensities.

The fragrance generating method for plural kinds of fragrances for solving the above-mentioned problems is the method for generating fragrances for plural kinds of fragrances, wherein the plural kinds of fragrances are pulse-injected in a predetermined order in a predetermined period in flowing air . In the period, the injection amount per unit time of the other fragrance to be injected after the one fragrance is larger than the injection amount per unit time of the one fragrance to be injected first, and the predetermined period is set at a predetermined interval. It repeats with , It is characterized by.

  According to the present invention, since a plurality of types of fragrances can be sensed (almost) simultaneously with different intensities, it is possible to produce a strength relationship between a plurality of types of fragrances in combination with video media.

The conceptual diagram which shows the fragrance generating method of this invention. The conceptual diagram which shows the fragrance provision method which uses a respiration sensor. The operation | movement conceptual diagram of the head of the bubble jet (registered trademark) system used when implementing the fragrance generating method of this invention. The conceptual diagram of the head which carries out the pulse injection of the fragrance | flavor for implementing the fragrance generating method of this invention. The figure which shows an example of the apparatus which enforces the fragrance generating method of this invention (partially broken view). FIG. 6 is a cross-sectional view of the apparatus shown in FIG. 5 taken along the line AA including the injection head 20 and the wind tunnel 43. 7 is an enlarged view of the ejection port array of the ejection head viewed from the direction of arrow B in FIG. The amount of each fragrance injected relative to the injection level. A pulse injection pattern that lets you feel the intensity of two types of fragrance. Questionnaire about perception of strength and weakness of two kinds of scents. The average point, standard deviation, and recognition rate values for the two types of fragrances in FIG. The values of the average score, standard deviation, and recognition rate in the case of a pattern in which the two types of fragrances of FIG. A pattern in which two types of fragrance are ejected during continuous breathing. FIG. 14 shows average points, standard deviations, and recognition rate values in the case of a pattern in which two types of fragrance are ejected during continuous breathing in FIG. 13. In the pattern of injecting two types of fragrance during continuous breathing, an injection pattern in which the number of fragrances emitted first is set once for the number of fragrances emitted later. The average point, standard deviation, and recognition rate in the case of the injection pattern of FIG.

  A scent generation method and apparatus capable of sensing a plurality of types of scents of the present invention simultaneously (substantially simultaneously) with different intensities will be described in detail with reference to the drawings.

  FIG. 1 is a schematic diagram showing a method for injecting a fragrance at a predetermined pulse interval for each fragrance for a minute time. In FIG. 1, 10 is a scent generating device (apparatus), 11 is a scent provided to the user from the scent generating device, 12 is a width (pulse width) in which the fragrance is injected into flowing air for a short time, 13 Indicates a pulse interval, and 14 indicates a pulse ejection of the fragrance.

  In this invention, when inject | pouring a fragrance | flavor into air in a pulse form, it is necessary to make air flow. When the fragrance is injected in a pulsed form while the air is stationary, the diffusion speed of the fragrance in the air is slow, and in normal use, it does not diffuse in a laminar flow state. This is because when the olfactory organ is reached, the result is substantially the same as the method in which the scent is continuously generated and perceived. There is no particular restriction on the air flow speed, but since the scent is felt by the olfactory organ, it is usually preferred to be from about a breeze (0.8 m / sec) to about 2.0 m / sec which is said to be comfortable to the skin. If the wind speed is increased too much, the scent is disturbed and mixed in the air, so that the effect of emitting in a pulse shape is lost.

  Although air in the natural state is used as air, depending on the situation where the present invention is used, for example, air with an increased oxygen concentration may be used. Further, the humidity and temperature of the air may be adjusted.

  The pulse width (injection time) is related to the flow velocity of the flowing air and the pulse interval, but is preferably 0.01 to 0.5 seconds. If it is less than 0.01 seconds, there is a case where the amount of the fragrance is small and the scent is not felt. Moreover, since the influence which it has on the perception of fragrance is small even if it exceeds 0.5 second, a fragrance | flavor may be wasted.

  The pulse interval (ejection interval) depends on human respiration.

  In human breathing, the smell of smell is felt when inhaling air (when inhaling). In order to make the scent feel in the sense of smell during inhalation, it is necessary to generate a scent pulse during inhalation. There are two methods for setting the interval between such pulses.

  One is a method for detecting the timing of inhalation using a sensor 15 for sensing human breathing as shown in FIG. 2 and generating a scent pulse 14 during inspiration to sense the scent. .

  In this method, since a scent is generated by detecting the timing of inspiration using a respiration sensor for sensing respiration, a fragrance can be used effectively.

  Another method is a method of performing pulse injection of a fragrance at a fixed timing without using such means for detecting the timing of inspiration.

  Human breathing has an average breathing cycle of 5 seconds at rest for healthy individuals, so if a pulse of scent is emitted so that it can be sensed during inspiration at intervals of 5 seconds, the scent can be sensed without using a breathing sensor. Will be able to. However, since there are individual differences in the number of breaths per unit time when a healthy person is at rest, an adjustment means that can adjust the interval at which the scent pulse is emitted is provided so that the interval matches the timing of your breathing. It is preferable to adjust. Moreover, when such an adjustment means is provided, it can be used other than when a healthy person is at rest.

  In order to perceive multiple types of fragrances at the same time (almost simultaneously) and not as a mixed fragrance, but as individual scents, multiple types of fragrances must be added during a single inspiration period. It is necessary to emit pulses separately at predetermined pulse intervals for each fragrance. Since the ratio of inspiration and expiration in respiration at the time of rest of a healthy person is 1: 1.5, the average time of inspiration in respiration is 2 seconds. In the inhalation, the period in which the scent is felt is a two-thirds period from the start to the end of the inspiration, and the time is 1.33 seconds. For this reason, when the healthy person is at rest, the types of fragrances that can be sensed during the inhalation period are preferably two types. For example, even if three types of fragrances are pulsed separately in 1.3 seconds, 3 It is difficult to perceive a variety of scents.

  However, in the case of so-called deep breathing, which breathes slowly and greatly, the breathing cycle has a length of around 10 seconds, and the period in which inhalation is felt becomes longer, so it is possible to sense three or more fragrances.

  In the following, the case of two kinds of fragrances suitable for breathing at rest of a healthy person will be described as an example.

Since the number of breaths per unit time when a healthy person is at rest varies slightly from person to person, when two kinds of fragrances are pulsed separately, the interval between the previous pulse ejection and the subsequent pulse ejection is 0. It is preferable that adjustment is possible in the range of 8 to 1.4 seconds.
Furthermore, this method can be used at times other than when a healthy person is resting. Is preferred.

  It should be noted that the number of repetitions of the two types of fragrance pulse ejection at a predetermined interval can be freely set by those skilled in the art depending on the type of fragrance and the usage situation. It is also possible to make it only once.

  As an apparatus for carrying out the present invention, any type of device can be used as long as it is capable of pulse-injecting a means for flowing air and a fragrance.

  As a means for flowing air, a blower (fan) having a simple structure and easy operation is preferable, but air may be flowed by other means such as a suction device. When use in a quiet environment is required, it is preferable that the sound generated from the blower be as small as possible.

  As a means for emitting the fragrance in pulses, an on-demand type bubble jet (registered trademark) head used in an ink jet printer is preferable. As shown in FIG. 3, this bubble jet (registered trademark) type head guides the fragrance to the fragrance chamber 21 in the head unit 20a and heats the heater 22 on the head wall surface (23 indicates the heater heating operation). The fragrance is boiled to generate bubbles 24, and the fragrance is discharged (injected) into the air in the form of droplets 25 using the rapid increase in pressure in the head caused by the generation of bubbles. is there. Since the discharged fragrance droplets are extremely fine, they are vaporized 100%. This Bubble Jet (registered trademark) type head can control the amount of fragrance discharged in units of several picoliters, so the fragrance concentration can be easily adjusted by adjusting the amount of fragrance discharged. can do. Further, since the pulse interval can be adjusted in units of 0.1 second, the control becomes easy.

  As a means for discharging the fragrance, an ink jet head using a piezoelectric element may be used instead of the heating means.

  In addition, the present invention can be implemented by any means as long as it is means for spraying perfume other than ink jet means into flowing air and the pulse emission of the present invention is possible.

  FIG. 4 shows an example of a scent pulse ejection head 20 suitable for carrying out the present invention. (In FIG. 4, the rightmost liquid path has the partition constituting the liquid path removed. The heater 22 is exposed). Reference numeral 28 denotes a fragrance tank, and the fragrance is heated by the heater 22 when passing through the liquid passage 27, and is ejected as a droplet 25 from the discharge port 26. A plurality of liquid passages 27 are provided in the discharge head 20b, and heaters 22 are provided in the respective liquid passages 27, and it is possible to perform on / off control for pulse ejection for each liquid passage. ing. Each discharge port 26 has the same diameter. When a switch (not shown) for supplying electricity to the heater 22 is turned on, the fragrance is discharged from the discharge port. For example, when the heaters of two liquid paths are simultaneously turned on, the fragrance is discharged from the two discharge ports. To do. Further, when the heaters of the four liquid passages are simultaneously turned on, the fragrance is discharged from the four discharge ports. As described above, the amount of the fragrance injected into the flowing air can be adjusted depending on how many heaters among the heaters of each liquid passage are turned on. That is, by adjusting the number of heaters to be turned on at the same time, it is possible to increase or decrease the amount of the fragrance injected into the air flowing in one pulse.

  FIG. 5 shows an example of an apparatus (experimental apparatus) 50 for carrying out the present invention, wherein 20 is a scent ejection head, 40 is a blower (fan), and the wind speed is 0 in the range of 0.8 to 2.0 m / sec. Adjustable in units of 0.1 m / second, 42 is a scent discharge port. Reference numeral 43 denotes a wind tunnel, and the fragrance is pulse-injected from the scent pulse ejection head 20 into fine droplets (sprayed) in the flowing air blown from the blower 40 and discharged from the scent discharge port 42. Is done. Reference numeral 60 denotes a control device that controls the injection pulse width of the fragrance (fragrance) ejected from the scent ejection head, the pulse interval, the rotational speed of the blower, and the like. Reference numeral 70 denotes a scent measurement surface. In this embodiment, the distance B between the scent discharge port 42 and the scent measurement surface is 10 cm. The scent measurement surface is a place where a nose (olfactory organ) that senses scent is located.

  6 shows an AA cross section including the injection head 20 and the wind tunnel 43 of FIG. 5, and FIG. 7 shows an arrangement of ejection ports of the injection head 20 as seen from the BB cross section of FIG. The apparatus shown in FIGS. 8 and 9 is an example in which two types of fragrance can be discharged into the wind tunnel at the same time or at different injection times. In addition, the arrow C of FIG. 6 shows the flow of air.

  The perfume tank 28 is provided with two of 28a and 28b.

  Further, the discharge port is divided into two blocks 201 and 202. Each discharge block can discharge corresponding to a different fragrance. Each discharge block has 128 discharge ports. For example, the discharge block 201 includes discharge ports 201-1, 201-2,... 201-127, 201-128. Similarly, the discharge block 202 also has 128 discharge ports. In the discharge block having these 128 discharge ports, the amount of fragrance discharged can be adjusted from 1 to 128 for each fragrance type by adjusting the number of heaters corresponding to each discharge port simultaneously turned on. Is possible.

  For example, in the case where 10 heaters of a certain fragrance discharge head are simultaneously turned on and discharged from the discharge port, and in the case where 20 heaters of the discharge head are simultaneously turned on for the same fragrance, the latter is doubled with respect to the former. Discharge amount. When none of the heaters in the liquid path to which a certain fragrance is supplied is turned on, the discharge amount of the fragrance is zero.

  Of course, it is obvious to those skilled in the art that the number and size of the fragrance tanks, the number of discharge blocks, or the number of discharge ports provided in each discharge block can be increased or decreased as necessary.

  For example, among a plurality of fragrances, a certain fragrance is stored in a large tank, the number of discharge ports of the corresponding discharge head is 256, and other fragrances are stored in a small tank, and the discharge ports of the corresponding discharge head are stored. It can be 128 or 64.

  In addition, when discharging three kinds of fragrances, it is only necessary to provide three or more fragrance tanks and discharge blocks. When discharging more fragrances, the number of fragrances to be discharged is equal to or more than that. A perfume tank and a discharge block may be provided. 6 and 7, it is possible to discharge only one kind of fragrance using only one fragrance tank and one discharge block.

A general-purpose device such as a personal computer (PC) or a microcomputer can be used as the control device 60 for the amount of the fragrance droplets to be ejected and the ejection interval.
As the fragrance used in the present invention, any natural fragrance such as lemon, lavender, heliotrope, cinnamon, melon, rosemary, jasmine, coffee, or artificial fragrance can be pulse-injected with a bubble jet (registered trademark) head. Any type of perfume can be used.

One fragrance can be used alone or a plurality of fragrances can be mixed. Furthermore, the (natural) fragrance extract itself may be used, or it may be used as fragrance water to which water or ethanol is added.
<Preliminary experiment>
Using the apparatus shown in FIGS. 5 to 7 for 11 subjects (21-24 years old: 8 males and 3 females), first of all, the types of fragrances of lemon, heliotrope and cinnamon The recognition threshold that can be recognized was obtained. The pulse width was 0.1 second and the wind speed was 1.8 m / second. Each fragrance | flavor which carries out the pulse injection used by the preliminary experiment was made into the fragrance | flavor water which added water and ethanol to the natural fragrance | flavor extract. The ratio is perfume water of 5 vol% of fragrance, 85 vol% of ethanol, and 10 vol% of water in any of the fragrances.

  For the pulse injection of the perfume water, a method of presenting to the subject with a sound signal was adopted. Further, in the experiment, in the ejection head 20b shown in FIGS. 4, 6, and 7, a descending method is adopted in which the number of heaters to be ejected simultaneously is increased from a large number (large injection amount) to a gradually decreasing state (small injection amount). It was adopted. When the pulse width is 0.1 second, the volume of the perfume water discharged at one time from one discharge head 20b is about 3.7 picoliters (pl).

  As a result of the measurement, the average recognition threshold value of lemon was 11/128 (that is, the amount of lemon perfume water ejected simultaneously from 11 of the discharge ports 128 shown in FIG. 7). That is, the scent of lemon can be recognized on average when the fragrance water is pulsed simultaneously from 11 outlets, but the scent of lemon can be recognized on the average when simultaneous jetting from 10 outlets. The average perception threshold is 11.

  Similarly, the heliotrope was 8/128 (that is, the amount of perfume water of the heliotrope simultaneously ejected from 8 of the discharge ports 128 shown in FIG. 7). Further, the cinnamon was 7/128 (that is, the amount of cinnamon perfume water ejected simultaneously from 7 of the discharge ports 128 shown in FIG. 7).

  By the way, it is known that human sensory intensity is proportional to the logarithm of physical stimuli (Tatsuaki Kawasaki, Motoki Nakajima, Mitsuo Tonoike: Characteristics and analytical evaluation of odor substances, Fragrance Journal, 2003). It is known that the same tendency is shown in FIG. Therefore, using the average recognition threshold obtained in this preliminary experiment as a reference, the injection level is set in a 2-fold series, with the average recognition threshold being twice as “ejection level 1 (Lv1)” and four times as “ejection level 2 ( Lv2) ”and 8 times were set to“ injection level 3 (Lv3) ”. (Fig. 8)

  For the combination of 3 kinds of fragrances, lemon, heliotrope, and cinnamon (3 sets), a total of 6 combinations are made by changing the order of the fragrances to be ejected first and later. It was. For each combination, pulse injection was performed so that the amount per unit time of the perfume to be ejected earlier was smaller than the amount per unit time of the perfume to be ejected later, and experiments were conducted on the strength relationship between the two types of perfume. It was.

  As a pattern to be ejected, when two kinds of fragrances are both emitted by pulse injection ((A) in FIG. 9), one fragrance is released continuously for a certain time during one inspiration timing (hereinafter referred to as “base fragrance”). The other fragrances were emitted by pulse emission (hereinafter referred to as “single pulse”) ((B) of FIG. 9).

  Note that the interval 13a between the pulse emitted earlier and the pulse emitted later is 1.0 second, and when the pattern of the base incense 14a is used, the base incense emission level is set to level 1 in any case. The discharge time 12a was set to 1.1 seconds, and the level of the single pulse 14b was set to the injection level 3. Further, in any case, the pulse width 12 was set to 0.1 second.

  As a comparative example, an experiment was also performed on a pattern in which pulse injection was performed so that the amount per unit time of the perfume ejected earlier in Example 1 was larger than the amount per unit time of the perfume ejected later ( (C) and (D) of FIG.

  The experiment was performed on 22 subjects (21 to 24 years old: 18 males and 4 females) using the apparatus 50 shown in FIGS. 5 to 7 and setting the wind speed to 1.8 m / sec. In the experiment, the same perfume water as in the preliminary experiment was used, and the pulse injection of the perfume water was presented to the subject with a sound signal.

  FIG. 10 shows the above six sets of the injection patterns (one previous injection pulse and one subsequent injection pulse) shown in FIGS. 9A and 9B at one inspiration timing. I went to answer the questions.

  FIG. 10 is an example of a combination of lemon and cinnamon. The other combinations were also answered in the same way.

  In addition, for example, when asking a question using FIG. 10, the sign of the obtained result is opposite in the case of injecting the lemon first and in the case of injecting the cinnamon first. The calculation was performed by inverting.

  First, in Question 1, ask how many fragrances you felt, and if you answered 1 type, it was considered that 2 types were not recognized, (number of 2 types answered) / (1 type answered Recognition rate (%).

  For the subjects who answered 2 types in Question 1, the question shown in (i) to (v) was asked about how they felt in Question 2 in Fig. 10, and 2 points (i) were given to the answers. , (Ii) was 1 point, (iii) was 0 (zero) point, (iv) was -1 point, and (v) was -2 point, and the average score was calculated. In addition, a standard deviation was calculated from the obtained average points. With respect to these results, both the previous and subsequent injections are shown in FIG. 11 (thick frame) when the pulse injection is performed, and FIG. 12 (thick frame) when either one is used as the base incense. . The results of Comparative Example 1 are also shown in FIG. 11 (broken line frame) and FIG. 12 (broken line frame).

  FIG.11 and FIG.12 sums up a total of six sets of experimental results for two types of fragrances. For the combination of two fragrances, for example, a combination of lemon and heliotrope, and a combination of lemon and cinnamon, when the experiment was conducted using the same injection level, the perceived result was statistically significant. It is known that there is no. Also in this experiment, since it was confirmed that no significant difference was found due to the difference in the fragrance, it was calculated by summing up (summing up) the experimental results.

  Furthermore, these results were analyzed by multiple testing using the Steel-Dwass method.

  From the recognition rates of the examples and comparative examples in FIG. 11 and FIG. 12, even when two types of fragrances are pulse-injected together or when one is used as a base fragrance, the previous fragrance is high in concentration and the subsequent fragrance is When injected at a low concentration, it can be seen that two types of fragrances are difficult to recognize. It seems that if a strong stimulus is given first, the later weak stimulus tends not to be felt.

  11 and 12, for the combination using the pulses of level 1 and level 3, and the combination using the single pulse and the base incense, the pulse emission of the injection level 2 and the injection level 1 or the injection level 3 Since the average score is low in the combination with, it can be seen that the difference between before and after is difficult. In addition, since the standard deviation in the latter case is large, it became clear that individual differences are likely to occur. From this, it can be seen that when the difference in the injection level between the two types of fragrances is presented as “1”, the difference in personal subjectivity increases in the perception of the scent before and after. Therefore, it is understood that the difference in injection level should be “2” or more in order to produce the difference between before and after.

  From the above experiments, it is preferable to provide a low-concentration scent first, and then provide a high-concentration scent afterwards to produce a context for two types of fragrances in one breath. It can be seen that a more favorable strength can be produced by setting a level difference of 2 or more (a density difference of 4 times).

  For a total of 6 combinations in the same manner as in Example 1, during the 6 consecutive breaths, a pulse is given so that the amount of the perfume to be ejected earlier is smaller than the amount of the perfume to be ejected later per unit time. It inject | emitted and experimented about the strength relationship of two types of fragrance | flavor. The pattern to be ejected is the same as in the first embodiment, both in the case of performing by pulse ejection (FIG. 13 (A)), and in the case where the fragrance to be ejected (released) first is the base fragrance (FIG. 13 (B). )) And went. Note that the pulse to be emitted first was set to the injection level 1, the pulse to be emitted later was set to the injection level 3, and the interval 13a between them was set to 1.0 second. Further, when the base incense pattern was used, the base incense emission level was set to level 1, the discharge time 12a was set to 1.1 seconds, and the single pulse level was set to the injection level 3. The pulse width 12 was 0.1 seconds.

  The experiment was performed on 20 subjects (21 to 24 years old: 17 men and 3 women) using the apparatus 50 shown in FIGS. 5 to 7 and setting the wind speed to 1.8 m / sec. In the experiment, the same perfume water as in the preliminary experiment was used, and the pulse injection of the perfume water was presented to the subject with a sound signal.

  In the same manner as in Example 1, a total of 6 combinations were performed in the form of answering the question shown in FIG.

  From the obtained results, the average score and its standard deviation were calculated. Regarding these results, FIG. 14 shows the results when two kinds of fragrances are used by pulse injection and the result when either one is a base fragrance and the other is a single pulse. These results were analyzed by multiple testing using the Steel-Dwass method.

  As shown in FIG. 14, the average point is higher and the standard deviation value is smaller in the case where the pulse is emitted after level 1 first and then the level 3 single pulse after the base scent first. From the above, it has been clarified that the method in which pulse emission is performed first before level 1 and then after level 3 is more appropriate for the production of the strength relationship between the two fragrances in continuous breathing.

  In FIG. 14, in the combination of the base fragrance and the single pulse, the average point shows a minus, even though the amount of the base fragrance emitted per unit time is small, the fragrance is released due to the long time release. This is because the overall amount increases, so that the influence of the base scent becomes stronger and the perception of the two types of strength is reversed. Moreover, since the standard deviation is large, it can be seen that the influence of individual differences tends to appear more strongly.

In the third example, in the fragrance intensity production in the six continuous breaths of the second example, the level 1 pulse to be emitted first is applied to the level 3 pulse to be emitted later at a rate of once every two times. Except for injecting (that is, injecting every other time), the two types of Example 2 were performed under the same conditions as in the case of performing pulse injection. The injection patterns of two types of fragrances are shown in FIG.
The obtained results are shown in FIG.

  From FIG. 16, the strength effect of two types of scents in continuous breathing is that the average score is high and the standard deviation is small by pulsing the previous scent once with respect to the subsequent scent 2 times. Since each type of scent can be perceived with a clearer strength, a more effective strength can be produced.

  Moreover, the quantity of the fragrance | flavor injected previously can be reduced. As a result, for example, if an expensive fragrance is used as a fragrance, the fragrance of the expensive fragrance can be sufficiently sensed in a small amount.

  As described above, according to the present invention, it is possible to clearly sense a strong fragrance and a weak fragrance separately in a single breath, not in a state where a plurality of types of fragrances are mixed. For this reason, in response to changes in sound and video, for example, it is possible to sense a plurality of scents individually with their strengths almost simultaneously, or perceive them in a mixed state. A rich and subtle atmosphere can be created, creating a more realistic environment.

  In addition, it is not a mixture of multiple types of fragrances, but multiple fragrances can be perceived individually with strength and weakness. Therefore, providing a new combination of fragrances that suits individual tastes in aromatherapy. Is possible.

10 Aroma generating device
11 Fragrance (fragrance)
12 Pulse ejection width 12a Base scent discharge time 13 Pulse interval 13a Interval between previous ejection pulse and subsequent ejection pulse 14 Perfume pulse ejection 14a Base scent 14b Single pulse 15 Respiration sensor 20 Pulse ejection head (assembly)
20a head unit 20b discharge head 21 fragrance chamber 22 heater 23 heater heating operation 24 bubble
25 Fragrance droplet 26 Discharge port 28, 28a, 28b Fragrance tank 40 Blower (fan)
42 Scent outlet 43 Wind tunnel 60 PC (control device)
70 Aroma measurement surface

Claims (8)

In the method of generating fragrances of plural kinds of fragrances, wherein a plurality of kinds of fragrances are pulse-injected in a predetermined order in a predetermined period in flowing air, injection per unit time of one fragrance that is first injected in the predetermined period A method for generating a scent of a plurality of types of fragrances , wherein the amount of other fragrances injected after the one fragrance is greater than the amount, and the predetermined period is repeated at predetermined intervals . The method for generating a fragrance of a plurality of types of fragrances according to claim 1, wherein an injection amount per unit time of the other fragrance to be injected later is four times an injection amount per unit time of the one fragrance to be injected first. . The injection of the first fragrance that is injected first is performed every other predetermined period of the predetermined period that is repeated at the predetermined interval, and the injection amount per unit time of the other fragrance that is subsequently injected is constant. to, smell generation method of a plurality of types of fragrance according to claim 1 or 2. The method for generating a scent of a plurality of types of fragrances according to any one of claims 1 to 3, wherein the predetermined interval is an interval of intake air. The method for generating a scent of a plurality of types of fragrances according to any one of claims 1 to 4, wherein the pulse emission time is 0.01 to 0.5 seconds. The fragrance generating method for a plurality of types of fragrances according to claim 4 , wherein the first fragrance is injected continuously instead of the pulse , and is continuously released during intake timing. The scent generation method for a plurality of types of fragrances according to claim 4 or 6 , wherein the interval between the inspirations is the interval between inspirations obtained based on the acquired respiratory information after acquiring the respiratory information of the user. A means for generating an air flow, and a fragrance injection means for injecting a plurality of types of fragrances into the air flow in a predetermined order in a predetermined order ;
The fragrance injection means includes
In the predetermined period, the injection amount adjusting means for increasing the injection amount per unit time of the other fragrance to be injected later than the injection amount per unit time of the one fragrance to be injected first ,
An apparatus for generating a plurality of types of scents, including interval adjusting means for repeating the predetermined period at predetermined intervals .

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