JP2005052257A - Liquid perfume sprayer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid perfume sprayer stably atomizing and spraying liquid perfume by avoiding the liquid perfume leaked from a spray port left around the spray port. <P>SOLUTION: This liquid perfume sprayer is provided with a spray device 30. The liquid perfume is fed from a liquid perfume storage tank to a pressure chamber 32-2 via a liquid inlet 31-1, a liquid feed passage 31-2, a liquid feed hole 31-3, and a liquid guide hole 32-1. A piezoelectric body 32-4 is so driven as to reduce the volume of the pressure chamber 32-2. The liquid perfume is thus sprayed to an outside space via the liquid outlet 32-3 and a spray port 31-4a in the tip of a spray nozzle 31-4. The surface (a surface spray port is formed thereon) formed with the spray port 31-4a is inclined from the horizontal surface by an angle α larger than a fall angle. The droplet of the liquid perfume stuck to the circumference of the spray port 31-4a falls along the spray port formed surface so that no liquid perfume stuck to the circumference of the spray port is left. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a liquid perfume ejecting apparatus that ejects liquid perfume while making fine particles in order to generate a desired scent.

2. Description of the Related Art Conventionally, there has been known an apparatus that uses a piezoelectric body (piezo element) as an actuator to inject liquid fragrance while making fine particles. An example of such an apparatus includes a pump 200 and an injection device 205 including a pressurizing chamber 201, a piezoelectric body 202, a vibration plate 203, and an injection nozzle 204, as shown in FIG. The pump 200 supplies liquid fragrance to the pressurizing chamber 201. The piezoelectric body 202 and the diaphragm 203 pressurize the liquid fragrance in the pressurizing chamber 201 by reducing the volume of the pressurizing chamber 201. As a result, the liquid fragrance is ejected from the ejection nozzle 204. (For example, refer to Patent Document 1).
Japanese Patent Laid-Open No. 5-317400 (paragraph numbers 0003-0004, FIG. 5)

  In the conventional apparatus, the injection nozzle 204 extends in the horizontal direction. Accordingly, the liquid fragrance is ejected in the horizontal direction, and gravity is applied to the ejected liquid fragrance immediately after the ejection. Therefore, the injected liquid fragrance | flavor has a speed component which faces immediately after injection. As a result, the ejected liquid fragrance starts to fall immediately after the ejection, and the time during which the liquid fragrance can exist in the space is shortened. For this reason, the liquid fragrance reaches the floor surface, the desk surface, etc. without being sufficiently vaporized in the space (that is, in the form of droplets). In this case, if there is a substance that causes a chemical reaction with the liquid fragrance on the floor or the desk surface, the generated scent may change. Further, even when such a substance does not exist, the liquid fragrance continuously adheres to substantially the same location, so that the same portion may be contaminated.

  On the other hand, when the ejection direction is set upward, the time during which the ejected liquid fragrance is present in the space becomes longer, and thus the above problem is alleviated. However, if the injection direction is too high (that is, if the streamline direction of the injection nozzle is close to the vertical upper direction), a part of the injected liquid fragrance or a liquid fragrance was injected into the injection device and leaked from the injection port. In some cases, the liquid fragrance remains around the injection port, and the remaining liquid fragrance inhibits stable injection. Accordingly, one of the objects of the present invention is to provide a liquid perfume ejecting apparatus capable of generating a desired aroma by stably ejecting liquid perfume while making it fine.

Summary of the Invention

  The liquid fragrance injection device of the present invention solves the above-described problems by appropriately setting the angle of the wall surface on which the injection nozzle of the injection nozzle is formed. Specifically, the liquid fragrance injection device of the present invention includes a liquid fragrance storage tank that stores liquid fragrance, an injection device, and an electric control device.

  The injection device includes an introduction passage connected to the liquid fragrance storage tank, a pressure chamber for introducing the liquid fragrance from the liquid fragrance storage tank through the introduction passage, and one end connected to the pressure chamber. And an actuator for pressurizing the liquid fragrance in the pressurizing chamber in response to a drive signal and an injection nozzle for injecting the liquid fragrance in the pressurizing chamber into the external space. The electric control device gives a drive signal to the actuator. Thereby, the liquid fragrance | flavor in a pressurization chamber is pressurized, and a liquid fragrance | flavor is injected to external space via an injection nozzle.

  The injection device has a wall in which a portion including the injection port of the injection nozzle is formed. And when the said liquid fragrance | flavor injection apparatus exists in a normal use state, the injection port formation surface which is the surface in which the same injection port of the same wall was formed does not exist in the surface containing a vertical up-down direction, and the said liquid fragrance | flavor It is comprised so that it may incline with an angle larger than the fall angle with respect to the same surface. When the liquid perfume ejecting apparatus is in a normal use state, it is synonymous with when the liquid perfume ejecting apparatus is installed for use. When starting to use the liquid perfume ejecting apparatus, a state in which the liquid perfume is filled in the ejecting device is also included when the liquid perfume ejecting apparatus is in a normal use state.

  According to this, since the injection port forming surface is inclined at an angle larger than the falling angle with respect to the same surface of the liquid fragrance, when the liquid fragrance is filled in a part of the injected liquid fragrance or the injection device The liquid fragrance leaking from the ejection port falls down along the ejection port forming surface. Therefore, since these liquid fragrance | flavors do not remain around the injection opening of an injection nozzle, the stable injection of liquid fragrance | flavor can be performed.

  Moreover, since the injection port forming surface is not in a plane including the vertical vertical direction and is inclined at an angle larger than the falling angle, the liquid fragrance is injected obliquely upward. Accordingly, since the initial velocity of the liquid fragrance to be ejected includes a vertically upward component, the liquid fragrance starts to fall when a predetermined time has elapsed since the ejection. As a result, the liquid fragrance stays in the space for a long time, and the injected liquid fragrance is easily vaporized in the space, so that a desired scent can be efficiently generated.

  In this case, it is preferable that a liquid repellent part for the liquid fragrance is formed on the surface of the injection port forming surface and in a portion immediately adjacent to the outer peripheral portion of the injection port (that is, a portion surrounding the injection port).

  According to this, due to the presence of the liquid repellent portion, the falling angle of the liquid perfume adhering to the periphery of the injection port becomes small. Therefore, the settable angle range of the injection port forming surface can be increased. In other words, it becomes possible to set the streamline direction (liquid perfume injection direction) of the injection nozzle to a more appropriate angle.

  Furthermore, it is preferable that the liquid repellent part is formed of a fluorine-based liquid repellent. The liquid repellent part formed of the fluorine-based liquid repellent can effectively repel the oil-based liquid fragrance and can reduce the falling angle.

  In addition, it is preferable that a lyophilic part for the liquid perfume is formed on the surface of the injection port forming surface and around the liquid repellent part. According to this, the liquid fragrance adhering to the periphery of the injection port at the time of injection or the liquid fragrance leaking from the injection port at the time of filling quickly reaches the lyophilic part from the liquid repellent part, and is immediately captured ( Absorbed). Therefore, since these liquid fragrance | flavors do not remain around the injection opening of an injection nozzle, the more stable injection of liquid fragrance | flavor can be performed.

  Furthermore, it is preferable that the lyophilic part is made of a porous material. Since the porous body has a large surface area, a large amount of liquid fragrance absorbed in the lyophilic part can be effectively vaporized.

  In any one of the liquid fragrance ejecting apparatuses described above, in a state where the liquid fragrance is filled in the ejection device, the liquid level of the liquid fragrance in the liquid fragrance storage tank includes the introduction passage, the pressurizing chamber, and It is also preferable that it is configured to be positioned above any of the spray nozzles. According to this, liquid fragrance | flavor can be filled in an injection device irrespective of the presence or absence of pressurization means, such as a pump.

  Furthermore, it is preferable that one end of the injection nozzle is connected to the uppermost part of the pressurizing chamber of the injection device in a state where the liquid perfume is filled in the injection device. According to this, the bubble which moves to the upper part of a pressurization chamber can be discharged | emitted outside via an injection nozzle. Therefore, since the pressurization of the liquid fragrance is not hindered by the bubbles in the pressure chamber, the liquid fragrance can be stably ejected.

  In addition, when one end of the injection nozzle is connected to the uppermost part of the pressurizing chamber, the injection nozzle always has a streamline direction of the liquid fragrance in the injection nozzle from the one end toward the other end. It is preferable to form it so as to have an upward component. According to this, the bubbles in the pressurizing chamber can be discharged to the outside through the spray nozzle. As a result, bubbles are less likely to remain in the injection nozzle, so that the liquid fragrance can be injected more stably.

  In addition, any one of the above-described liquid fragrance injection apparatuses includes a plurality of sets each including the liquid fragrance storage tank and the injection device, and at least one liquid fragrance storage tank and another liquid fragrance storage tank include It is preferable that different liquid fragrances are stored and different liquid fragrances can be simultaneously sprayed into the same space. Different liquid fragrances include not only liquid fragrances having different types of components, but also liquid fragrances containing the same components but having different concentrations.

  According to this, since two or more kinds of liquid fragrances can be sprayed simultaneously, it is possible to generate a fragrance other than the fragrance brought about by the liquid fragrance alone stored in the liquid fragrance storage tank.

  In any one of the liquid fragrance ejecting apparatuses described above, the actuator is configured to change the volume of the pressurizing chamber to pressurize and depressurize the liquid fragrance in the pressurizing chamber, and the electric control device includes the actuator On the other hand, the actuator reduces the volume of the pressurizing chamber from the initial volume, thereby returning the volume of the pressurizing chamber to the initial volume after ejecting the liquid perfume from the spray nozzle. The drive signal is generated so as to repeatedly execute a series of operations that vibrate the injection port forming surface by repeatedly increasing and decreasing the volume of the same pressure chamber within a short time within a range where the liquid fragrance is not injected from the injection nozzle. It is preferable to do.

  According to this, the injection of the liquid fragrance is performed intermittently. In addition, since the volume of the pressurizing chamber is repeatedly increased and decreased within a short time from the end of the injection of the liquid fragrance to the start of the next injection, the injection port forming surface slightly vibrates. As a result, since the liquid fragrance | flavor adhering to the edge part and peripheral part of an injection port can be dropped, it becomes possible to perform stable injection.

  On the other hand, the actuator is configured to change the volume of the pressurizing chamber to pressurize and depressurize the liquid perfume in the pressurizing chamber, and the electric control device is configured to pressurize the actuator. The drive signal may be generated so that the liquid perfume is ejected from the ejection nozzle by increasing or decreasing the volume of the chamber and periodically displacing the ejection port forming surface in the streamline direction of the ejection nozzle. .

  According to this, when the injection port forming surface moves backward (moves in the direction opposite to the injection direction), the liquid fragrance starts to protrude from the injection port in a columnar shape. Further, the injection port forming surface moves in a direction opposite to the growth direction of the columnar liquid fragrance. Therefore, the injection side of the liquid fragrance protruding in a columnar shape moves backward while being dragged by the injection nozzle wall surface. Thereby, the diameter of the base part of the liquid fragrance | flavor which protruded in columnar shape becomes small, a constriction part generate | occur | produces in the part, and liquid fragrance | flavor detaches | leaves so that it may tear off from the part. Therefore, compared to the case where the liquid fragrance is ejected only by the surface tension of the liquid fragrance, the droplet diameter of the liquid fragrance becomes smaller, and the liquid fragrance can be ejected as finer droplets. Become.

  On the other hand, the actuator is a piezoelectric body, and the electric control device causes the piezoelectric body to eject the liquid perfume from the ejection nozzle by greatly reducing the volume of the pressurizing chamber from the initial volume. After that, the volume of the pressurizing chamber is returned to the initial volume, and then the piezoelectric body is vibrated within the range where the liquid fragrance is not ejected from the ejection nozzle to increase the temperature of the piezoelectric body. The drive signal may be generated so as to increase the temperature of the liquid fragrance in the pressure chamber.

  According to this, since the temperature of the liquid fragrance | flavor in a pressurization chamber rises with the vibration of a piezoelectric material, the viscosity of the liquid fragrance | flavor in the pressurization chamber falls. As a result, the liquid fragrance is easily split when ejected from the ejection nozzle, and is ejected as finer fine particles.

  Alternatively, the actuator is a piezoelectric body, and the electric control device causes the piezoelectric body to eject the liquid fragrance from the ejection nozzle by greatly reducing the volume of the pressurizing chamber from the initial volume. After that, the volume of the pressurizing chamber is returned to the same initial volume, and the piezoelectric body adjusts the volume of the pressurizing chamber from the jet nozzle at a cycle sufficiently short with respect to the cycle of the liquid perfume jetting operation. The drive signal may be generated so as to continuously increase or decrease within a range where the liquid fragrance is not ejected.

  According to this, as a result of continuously increasing / decreasing the volume of the pressurizing chamber in a sufficiently short cycle with respect to the cycle of the liquid perfume injection operation (that is, large pressurization and subsequent depressurization), A plurality of waves are generated on the liquid surface of the liquid fragrance. As a result, the liquid fragrance is split from the tops of the generated waves, so that the liquid fragrance can be generated more finely.

  Another liquid fragrance injection device according to the present invention includes a liquid fragrance storage tank for storing liquid fragrance, an introduction passage connected to the liquid fragrance storage tank, and the liquid fragrance from the liquid fragrance storage tank via the introduction passage. Pressure chamber, one end connected to the same pressure chamber, an injection nozzle for injecting liquid perfume in the same pressure chamber from the other end of the pressure chamber to the external space, and the same pressure chamber in response to the drive signal An injection device including an actuator for pressurizing the liquid fragrance, and an electric control device for applying a drive signal to the actuator, and the liquid fragrance is transferred to the external space via the injection nozzle in response to the drive vibration. A liquid perfume ejecting apparatus for ejecting, further comprising a plate that is disposed at a position where a part of the ejected liquid perfume adheres and promotes vaporization of the adhering liquid perfume. According to this, vaporization of the injected liquid fragrance | flavor can be accelerated | stimulated with a plate.

  It is also preferable that at least the surface side of the plate to which the injected liquid fragrance adheres is formed of a porous body. Since the porous body has a large surface area, more heat can be given to the liquid fragrance, and vaporization of the liquid fragrance can be further promoted.

  Another liquid fragrance injection device according to the present invention includes a liquid fragrance storage tank for storing liquid fragrance, an introduction passage connected to the liquid fragrance storage tank, and the liquid fragrance from the liquid fragrance storage tank via the introduction passage. Pressure chamber, one end connected to the same pressure chamber, an injection nozzle for injecting liquid perfume in the same pressure chamber from the other end of the pressure chamber to the external space, and the same pressure chamber in response to the drive signal An injection device including an actuator for pressurizing the liquid fragrance, and an electric control device for applying a drive signal to the actuator, and the liquid fragrance is transferred to the external space via the injection nozzle in response to the drive vibration. A liquid perfume ejecting apparatus for ejecting, comprising a fan that blows air in a direction intersecting a jet direction of the liquid perfume ejected from the ejection port.

  According to this, vaporization of the injected liquid fragrance | flavor can be accelerated | stimulated further by ventilation of a fan.

  Furthermore, it is preferable that the injection device of any one of the above liquid fragrance injection devices is made of ceramics. Ceramics have high durability against various solvents contained in liquid fragrances. Therefore, according to the said structure, a highly durable liquid perfume injection apparatus can be provided.

  Hereinafter, each embodiment of the liquid fragrance injection device (liquid fragrance spraying device, scent generator, fragrance device) according to the present invention will be described with reference to the drawings.

(First embodiment)
As shown in FIG. 1, the liquid fragrance injection device 10 according to the first embodiment of the present invention includes a liquid fragrance storage tank 20 that stores liquid fragrance, an injection device 30, and an electric control device 40. . The liquid fragrance to be sprayed is lemon oil or a liquid obtained by diluting lemon oil with ethanol, and is a liquid containing a known fragrance component.

  The injection device 30 is shown in FIGS. FIG. 2 is a front view of the ejection device 30. 3 is a cross-sectional view of the ejection device 30 cut along a plane along line 1-1 in FIG. The injection device 30 includes a base 31 and a pump 32.

  The base 31 has a substantially rectangular parallelepiped shape that extends in parallel with the X, Y, and Z axes whose sides are orthogonal to each other. The base 31 is formed of a plurality (three in this example) of ceramic thin plate bodies 31a to 31c that are sequentially laminated and pressed. The ceramic thin plate is hereinafter referred to as a “ceramic sheet”. The base 31 is inclined with respect to the horizontal plane when the liquid flavor injection device 10 is in a normal use state. As a result, the angle formed between the outer surface along the XY plane of the ceramic sheet 31a and the horizontal plane is α. The base 31 includes a liquid inlet 31-1, a liquid supply passage 31-2, a liquid supply hole 31-3, and an injection nozzle 31-4.

  The pump 32 has a substantially rectangular parallelepiped shape extending parallel to the X, Y, and Z axes. The pump 32 is formed of a plurality of ceramic sheets 32a to 32c that are sequentially laminated and pressed. The pump 32 includes a liquid introduction hole 32-1, a pressurizing chamber (chamber) 32-2, a liquid discharge hole 32-3, and a piezoelectric body 32-4 that functions as an actuator. The ceramic sheet 32c is a ceramic diaphragm that is extremely thin compared to the ceramic sheet 32a and the ceramic sheet 32b and can be easily deformed and restored.

  The liquid inlet 31-1 is a through hole formed in the ceramic sheet 31c. The liquid injection port 31-1 is provided at the X-axis negative direction end at the substantially central portion in the Y-axis direction of the ejection device 30. The liquid inlet 31-1 is connected to the bottom of the liquid fragrance storage tank 20 through the connection pipe 21.

  The liquid supply passage 31-2 is formed in the ceramic sheet 31b, and the long axis and the short axis are formed by the side wall surface of the oval notch along the X-axis direction and the Y-axis direction, the ceramic sheet 31a, and the ceramic sheet 31c. A defined space. The liquid supply passage 31-2 is formed at a substantially central portion in the Y-axis direction of the ejection device 30 from the vicinity of the end portion in the negative X-axis direction of the ejection device 30 to the substantially central portion in the X-axis direction. The liquid supply passage 31-2 communicates with the liquid injection port 31-1 at the end portion in the X-axis negative direction.

  The liquid supply hole 31-3 is a through hole formed in the ceramic sheet 31c. The liquid supply hole 31-3 is provided in the X-axis direction substantially center portion of the ejection device 30 and in the Y-axis direction approximately center portion. The liquid supply hole 31-3 is in communication with the liquid supply passage 31-2.

  The liquid introduction hole 32-1 is a through hole formed in the ceramic sheet 32a. The diameter of the liquid introduction hole 32-1 is slightly smaller than the diameter of the liquid supply hole 31-3. The liquid introduction hole 32-1 is disposed coaxially with the liquid supply hole 31-3 and communicates with the liquid supply hole 31-3.

  The pressurizing chamber 32-2 is formed in the ceramic sheet 32b, and the major axis and the minor axis are formed by the side wall surface of the oval cutout portion along the X-axis direction and the Y-axis direction, respectively, the ceramic sheet 32a, and the ceramic sheet 32c. A defined space. The pressurizing chamber 32-2 is formed at a substantially central portion in the Y-axis direction of the injection device 30 and from a substantially central portion in the X-axis direction of the injection device 30 to an end portion in the X-axis positive direction. The pressurizing chamber 32-2 is connected to the liquid introduction hole 32-1 at the end portion in the X-axis negative direction. Accordingly, the pressurizing chamber 32-2 is connected to the liquid perfume storage tank 20 through the introduction passage formed by the liquid inlet 31-1, the liquid supply passage 31-2, the liquid supply hole 31-3, and the liquid introduction hole 32-1. It is connected.

  The liquid discharge hole 32-3 is a through hole formed in the ceramic sheet 32a. The diameter of the liquid discharge hole 32-3 is larger than the diameter of the liquid introduction hole 32-1. The liquid discharge hole 32-3 is connected to the pressurizing chamber 32-2 at the end in the X-axis positive direction of the pressurizing chamber 32-2.

  The piezoelectric body 32-4 is fixed to the outer surface of the ceramic sheet 32c. The piezoelectric body 32-4 is formed of a piezoelectric film and a pair of electrodes that sandwich the piezoelectric film. The outer shape of the piezoelectric body 32-4 is slightly smaller than the pressurizing chamber 32-2. The piezoelectric body 32-4 deforms the ceramic sheet 32c according to the drive signal supplied from the electric control device 40, and increases and decreases the volume of the pressurizing chamber 32-3.

  The injection nozzle 31-4 is configured by through holes formed in the ceramic sheets 31a to 31c. The diameters of these through holes are gradually increased from the ceramic sheet 31a toward the ceramic sheet 31c. Each through-hole constituting the injection nozzle 31-4 is arranged and configured to be coaxial with the liquid discharge hole 32-3. A through hole forming a part of the injection nozzle 31-4 provided in the ceramic sheet 31c communicates with the liquid discharge hole 32-3.

  The injection nozzle 31-4 and the liquid discharge hole 32-3 can be regarded as one injection nozzle. One end of the injection nozzle regarded as described above is connected to the pressurizing chamber 32-2. The other end of the spray nozzle (the end of the through hole that forms part of the spray nozzle 31-4 formed in the ceramic sheet 31a) is exposed to the external space where the liquid fragrance is to be sprayed, and the spray port 31-4a. Is configured.

  As described above, when the liquid flavor injection device 10 is put into a normal use state, the outer surface along the XY plane of the ceramic sheet 31a is inclined. The outer surface along the XY plane of the ceramic sheet 31a is a wall surface of the injection device 30 in which a portion including the injection port 31-4a of the injection nozzle 31-4 is formed, and the injection port 31-4a is It is a formed surface (hereinafter referred to as an “injection port forming surface”).

  The angle formed by the injection port forming surface and the horizontal plane is α. This angle α is set to be larger than the falling angle of the liquid fragrance with respect to the injection port forming surface (the outer surface of the ceramic sheet 31a). The falling angle is an angle with respect to the horizontal plane of the wall surface just before the droplets attached to the wall surface falls when the wall surface is inclined. The angle α is set to be smaller than 90 °. Therefore, the injection port forming surface does not exist in the plane including the vertical vertical direction.

  Furthermore, in the liquid fragrance injection device 10, in the state where the injection device 30 is filled with the liquid fragrance, the liquid level of the liquid fragrance in the liquid fragrance storage tank 20 corresponds to the liquid inlet 31-1 and the liquid supply passage 31-2. Positioned above any of the liquid introduction passage composed of the liquid supply hole 31-3 and the liquid introduction hole 32-1, the pressurizing chamber 32-2, and the ejection nozzle (the ejection nozzle 31-4 and the liquid ejection hole 32-3). Is configured to do. In this case, even if the liquid level in the liquid fragrance storage tank 20 reaches the minimum level, the liquid level of the liquid fragrance in the liquid fragrance storage tank 20 is changed to the liquid introduction passage, the pressurizing chamber 32-2, and the jet. It is preferable to be configured to be positioned above any of the nozzles.

  The ejection device 30 configured as described above includes the connection pipe 21, the liquid inlet 31-1, the liquid supply passage 31-2, the liquid supply hole 31-3, and the liquid introduction hole 32-1 from the liquid fragrance storage tank 20. The liquid fragrance is introduced into the pressurizing chamber 32-2. The ejection device 30 pressurizes the liquid fragrance in the pressurizing chamber 32-4 by reducing the volume of the pressurizing chamber 32-2 by the operation of the piezoelectric body 32-4. As a result, the liquid fragrance is ejected as fine droplets from the ejection port 31-4a to the external space via the liquid discharge hole 32-3 and the ejection nozzle 31-4.

  Further, since the injection port forming surface is inclined at an angle α larger than the falling angle of the liquid fragrance with respect to the same surface, the liquid fragrance is injected when a part of the injected liquid fragrance or the injection device 30 is filled with the liquid fragrance. The liquid fragrance leaked from the mouth 31-4a falls along the ejection port forming surface. Therefore, since these liquid fragrance | flavors do not remain in the edge part of the ejection opening 31-4a, or the periphery of the ejection opening 31-4a, the liquid fragrance | flavor injection apparatus 10 can perform the injection of the stable liquid fragrance | flavor continuously.

  Further, since the angle α is smaller than 90 °, the injection port forming surface is not in the plane including the vertical vertical direction. Furthermore, since the angle α is larger than the falling angle and smaller than 90 °, the liquid fragrance is jetted obliquely upward. Accordingly, the initial velocity of the injected liquid fragrance includes a vertically upward component. As a result, the liquid fragrance starts to fall after a predetermined time has elapsed since the injection. As a result, the residence time of the liquid fragrance in the space becomes long and the injected liquid fragrance is easily vaporized in the space, so that a desired fragrance can be efficiently generated.

  Furthermore, in the liquid fragrance injection device 10, in the state where the injection device 30 is filled with the liquid fragrance, the liquid level of the liquid fragrance in the liquid fragrance storage tank 20 corresponds to the liquid inlet 31-1 and the liquid supply passage 31-2. Positioned above any of the liquid introduction passage composed of the liquid supply hole 31-3 and the liquid introduction hole 32-1, the pressurizing chamber 32-2, and the ejection nozzle (the ejection nozzle 31-4 and the liquid ejection hole 32-3). Is configured to do. Therefore, the liquid fragrance can be easily filled into the ejection device 30 regardless of the presence or absence of pressurizing means such as a pump for filling the ejection device 30 with the liquid fragrance.

(Second Embodiment)
Next, 2nd Embodiment of the liquid fragrance | flavor injection apparatus by this invention is described with reference to FIG.4 and FIG.5. The liquid perfume ejecting apparatus according to the second embodiment is different from the liquid perfume ejecting apparatus 10 only in that the ejection device 30 of the liquid perfume ejecting apparatus 10 according to the first embodiment is replaced with the ejection device 50. Therefore, this difference will be mainly described below. FIG. 4 is a front view of the ejection device 50. FIG. 5 is a cross-sectional view of the ejection device 50 taken along a plane along line 2-2 in FIG.

  In the ejection device 50, a liquid repellent part 51 for the liquid fragrance is formed around the ejection port 31-4a of the ejection device 30, and a lyophilic part 52 for the liquid fragrance is formed around the liquid repellent part 51. Only in the injection device 30.

  More specifically, the liquid repellent part 51 is made of a material that exhibits higher liquid repellency than the liquid fragrance on the outer surface of the ceramic sheet 31a (in this example, a fluorine-based liquid repellent). Thin film portion. The liquid repellent portion 51 is formed in a ring shape so as to surround the injection port 31-4a at a portion in the vicinity of the outer peripheral portion of the injection port 31-4a on the surface of the injection port forming surface.

  The lyophilic part 52 is a thin film body made of a material exhibiting a higher lyophilic property than the lyophilic property indicated by the outer surface of the ceramic sheet 31a with respect to the liquid fragrance. In this example, the lyophilic part 52 is a porous body made of any one of metal, ceramic, plastic, carbide, cellulose (paper), and cotton. The lyophilic portion 52 is formed in a ring shape so as to surround the lyophobic portion 51 on the surface of the injection port forming surface and in the immediate vicinity of the outer peripheral portion of the lyophobic portion 51.

  Here, an example of the falling angle is shown in Table 1. The base material of the injection device used in Table 1 is a plastic film, and the liquid repellent is CYTOP (Asahi Glass Co., Ltd .: amorphous-fluorine resin).

  Similarly to the liquid fragrance injection device 10, the liquid fragrance injection device configured as described above injects the liquid fragrance from the injection port 31-4a into the external space. At this time, a part of the liquid fragrance ejected from the ejection port 31-4a or the liquid fragrance leaked from the ejection port 31-4a when the ejection device 30 is filled with the liquid fragrance adheres to the liquid-repellent portion 51 and is repelled. It is repelled by the liquid part 51. Therefore, in this liquid fragrance injection device, compared to the liquid fragrance injection device 10, the falling angle of the liquid fragrance attached to the periphery of the injection port 31-4a is small. As a result, in the liquid fragrance injection device according to the second embodiment, the range of the settable angle α (falling angle to 90 °) of the injection port forming surface can be made larger than that of the liquid fragrance injection device 10. In other words, the streamline direction (liquid perfume injection direction) of the injection nozzle 31-4 can be set to a more appropriate angle.

  Furthermore, since the liquid repellent part 51 is formed of a fluorine-based liquid repellent, it can effectively repel oil-based liquid perfume. Therefore, the falling angle can be made smaller for many liquid fragrances.

  In addition, in the liquid fragrance injection device according to the second embodiment, since the lyophilic portion 52 is provided around the liquid repellent portion 51, the liquid fragrance adhered to the periphery of the injection port 31-4a during injection or during filling The liquid fragrance leaked from the ejection port 31-4a quickly reaches the lyophilic part 52 from the lyophobic part 51, and is immediately captured and absorbed by the lyophilic part 52. Therefore, since these liquid fragrance | flavors do not remain around the injection nozzle 31-4a, more stable liquid fragrance | air_jet can be performed.

  Furthermore, since the lyophilic part 52 is made of a porous body having a large surface area, a large amount of liquid perfume absorbed by the lyophilic part 52 can be applied with a large amount of heat. As a result, the captured liquid fragrance can be effectively vaporized.

  In the second embodiment, the lyophilic part 52 may be omitted. Moreover, the lyophilic part 52 should just exist in a site | part with high possibility that the liquid fragrance | flavor which falls (falls down) on the liquid injection port formation surface (actually lyophilic part 52) will arrive. In other words, the lyophilic portion 52 only needs to exist on the injection port forming surface and around the liquid repellent portion 51. In this case, in particular, it is preferable that the liquid repellent part 51 is disposed below the liquid repellent part 51 for the purpose of absorbing the liquid perfume flowing downward.

(Third embodiment)
Next, a third embodiment of the liquid flavor injection device according to the present invention will be described with reference to FIGS. The liquid perfume ejecting apparatus according to the third embodiment is different from the liquid perfume ejecting apparatus 10 only in that the ejection device 30 of the liquid perfume ejecting apparatus 10 according to the first embodiment is replaced with an ejection device 60. Therefore, this difference will be mainly described below. FIG. 6 is a front view of the ejection device 60. FIG. 7 is a cross-sectional view of the ejection device 60 taken along a plane along line 3-3 in FIG. The injection device 60 has a structure in which the injection device 30 is turned upside down. The injection device 60 includes a base body 61 and a pump 62.

  The base body 61 has a substantially rectangular parallelepiped shape in which each side extends in parallel to the X, Y, and Z axes perpendicular to each other. The base body 61 is formed of a plurality of (in this example, three) ceramic sheets 61a to 61c that are sequentially laminated and pressed. The base 61 includes a liquid inlet 61-1, a liquid supply passage 61-2, a liquid supply hole 61-3, and an ejection nozzle 61-4.

  The XY plane of the base 61 is inclined by an angle α from the horizontal plane when the liquid fragrance ejecting apparatus according to the third embodiment is in a normal use state (including a state in which the ejection device 60 is filled with the liquid fragrance). ing. As a result, the outer surface along the XY plane of the ceramic sheet 61a is inclined by an angle α with respect to the horizontal plane when the liquid perfume ejecting apparatus is in a normal use state. This angle α is the same as the angle α described above, and is larger than the sliding angle and smaller than 90 °.

  The pump 62 has a substantially rectangular parallelepiped shape extending parallel to the X, Y, and Z axes. The pump 62 is formed of a plurality of ceramic sheets 62a to 62c that are sequentially laminated and pressed. The pump 62 includes a liquid introduction hole 62-1, a pressurizing chamber (chamber) 62-2, a liquid discharge hole 62-3, and a piezoelectric body 62-4 that functions as an actuator. The ceramic sheet 62c is a ceramic diaphragm that is extremely thin compared to the ceramic sheet 62a and the ceramic sheet 62b and can be easily deformed and restored.

  The liquid inlet 61-1 is a through hole formed in the ceramic sheet 61c. The liquid injection port 61-1 is provided at the X-axis positive direction end at the substantially central portion in the Y-axis direction of the ejection device 60. The liquid inlet 61-1 is connected to the bottom of the liquid fragrance storage tank 20 through the connection pipe 21.

  The liquid supply passage 61-2 is formed in the ceramic sheet 61b, and the long axis and the short axis are formed by the side wall surface of the oval cutout portion along the X-axis direction and the Y-axis direction, respectively, the ceramic sheet 61a and the ceramic sheet 61c. A defined space. The liquid supply passage 61-2 is formed at a substantially central portion in the Y-axis direction of the ejection device 60, from the vicinity of the X-axis positive direction end portion of the ejection device 60 to the substantially central portion in the X-axis direction. The liquid supply passage 61-2 communicates with the liquid inlet 61-1 at the end portion in the positive X-axis direction.

  The liquid supply hole 61-3 is a through hole formed in the ceramic sheet 61c. The liquid supply hole 61-3 is provided at a substantially central portion in the X-axis direction of the ejection device 60. The liquid supply hole 61-3 is communicated with the liquid supply passage 61-2.

  The liquid introduction hole 62-1 is a through hole formed in the ceramic sheet 62a. The diameter of the liquid introduction hole 62-1 is slightly smaller than the diameter of the liquid supply hole 61-3. The liquid introduction hole 62-1 is disposed coaxially with the liquid supply hole 61-3 and communicates with the liquid supply hole 61-3.

  The pressurizing chamber 62-2 is formed in the ceramic sheet 62b, and the major axis and the minor axis are formed by an oblong side wall surface along the X-axis direction and the Y-axis direction, respectively, the ceramic sheet 62a and the ceramic sheet 62c. A defined space. The pressurizing chamber 62-2 is formed at a substantially central portion in the Y-axis direction of the injection device 60, from a substantially central portion in the X-axis direction of the injection device 60 to an end portion in the X-axis negative direction. The pressurizing chamber 62-2 is connected to the liquid introduction hole 62-1 at the end portion in the X-axis negative direction.

  The liquid discharge hole 62-3 is a through hole formed in the ceramic sheet 62a. The diameter of the liquid discharge hole 62-3 is larger than the diameter of the liquid introduction hole 62-1. The liquid discharge hole 62-3 is connected to the pressurizing chamber 62-2 at the X-axis negative direction end of the pressurizing chamber 62-2.

  The piezoelectric body 62-4 is fixed to the outer surface of the ceramic sheet 62c. The piezoelectric body 62-4 is formed of a piezoelectric film and a pair of electrodes that sandwich the piezoelectric film. The piezoelectric body 62-4 deforms the ceramic sheet 62c in accordance with the drive signal supplied from the electric control device 40, and increases and decreases the volume of the pressurizing chamber 62-2.

  The injection nozzle 61-4 is formed by a through hole formed in the ceramic sheets 61a to 61c. The diameters of these through holes are gradually increased from the ceramic sheet 61a toward the ceramic sheet 61c. Moreover, the X-axis negative direction edge part of these through-holes is arrange | positioned on the same straight line.

  A through hole forming a part of the injection nozzle 61-4 provided in the ceramic sheet 61c is communicated with the liquid discharge hole 62-3. The upper end of the through hole of the ceramic sheet 61c is coincident with the upper end of the liquid discharge hole 62-3.

  The injection nozzle 61-4 and the liquid discharge hole 62-3 can be regarded as one injection nozzle. One end of the injection nozzle thus regarded is connected to the pressurizing chamber 62-2 at the top of the pressurizing chamber 62-2. Further, the other end of the spray nozzle (the end of the through hole forming a part of the spray nozzle 62-4 formed in the ceramic sheet 61a) is exposed to the external space where the liquid perfume is to be sprayed, and the spray nozzle 61-. 4a is constituted.

  As a result, one end of the injection nozzle is connected to the top of the pressurizing chamber 62-2. The spray nozzle is directed from the one end where the flow direction (flow direction, axial direction) of the liquid fragrance in the spray nozzle is communicated to the pressurizing chamber 62-2 to the other end which is the spray port 61-4a. It is formed so as to always have an upward component.

  Furthermore, also in this liquid fragrance injection device, in a state where the injection device 60 is filled with the liquid fragrance, the liquid level of the liquid fragrance in the liquid fragrance storage tank 20 corresponds to the liquid inlet 61-1 and the liquid supply passage 61-2. Positioned above any of the liquid introduction passage composed of the liquid supply hole 61-3 and the liquid introduction hole 62-1, the pressurizing chamber 62-2, and the ejection nozzle (the ejection nozzle 61-4 and the liquid ejection hole 62-3). Is configured to do.

  The third liquid perfume ejecting apparatus configured as described above operates in the same manner as the liquid perfume ejecting apparatus 10 of the first embodiment, and ejects the liquid perfume into the external space as fine droplets. Further, in the liquid fragrance ejecting apparatus of the third embodiment, as with the liquid fragrance ejecting apparatus 10, since the ejection port forming surface is inclined from the horizontal plane by an angle α that is larger than the falling angle and smaller than 90 °, the ejected liquid A part of the fragrance or the liquid fragrance leaked from the ejection port 61-4a when the ejection device 60 is filled with the liquid fragrance falls down along the ejection port formation surface. Therefore, since these liquid fragrance | flavors do not remain in the edge part of the ejection opening 61-4a, or the periphery of the ejection opening 61-4a, the liquid fragrance | flavor injection apparatus 10 can perform the ejection of the stable liquid fragrance | flavor continuously.

  Further, in this liquid fragrance ejecting apparatus, in the state where the ejection device 60 is filled with the liquid fragrance, the liquid level of the liquid fragrance in the liquid fragrance storage tank 20 is changed between the liquid inlet 31-1 and the liquid supply passage 31-2. Positioned above any of the liquid introduction passage composed of the liquid supply hole 31-3 and the liquid introduction hole 32-1, the pressurizing chamber 62-2, and the ejection nozzle (the ejection nozzle 61-4 and the liquid ejection hole 62-3). Is configured to do. Therefore, the liquid fragrance can be easily filled in the ejection device 60 regardless of the presence or absence of pressurizing means such as a pump for filling the ejection device 60 with the liquid fragrance.

  In addition, the pressurizing chamber 62-2 of the ejecting device 60 has an ejecting nozzle (the ejecting nozzle 62-4 and the liquid ejection hole 62 at the top of the pressurizing chamber 62-2 in a state where the ejecting device 60 is filled with the liquid fragrance. -3 spray nozzle) is connected to one end. Therefore, the bubbles moving to the upper part of the pressurizing chamber 62-2 can be easily discharged to the outside through the spray nozzle. As a result, since the pressurization of the liquid fragrance is not hindered by the bubbles remaining in the pressurizing chamber 62-2, the liquid fragrance can be stably ejected.

  Further, one end of the injection nozzle is connected to the uppermost part of the pressurizing chamber 62-2, and the flow direction of the liquid fragrance in the injection nozzle is connected to the pressurizing chamber 62-2. It is formed so as to always have a component that is directed upward from one end toward the other end of 61-4a that is the injection port. Accordingly, the bubbles in the pressurizing chamber 62-2 can be easily discharged to the outside through the injection nozzle, and since no bubbles remain in the injection nozzle, the liquid fragrance can be injected more stably.

(Fourth embodiment)
Next, a fourth embodiment of the liquid flavor injection device according to the present invention will be described. The liquid fragrance injection device according to the fourth embodiment includes a plurality of sets (two sets in this example) including the liquid fragrance storage tank 20 and the injection device 30 included in the liquid fragrance injection device 10 according to the first embodiment. . The two injection devices are integrated into one injection device 70 as shown in FIG. The two liquid inlets 71-1 of the ejection device 70 are connected to corresponding liquid fragrance storage tanks (not shown). The sectional view of the injection device 70 is the same as the sectional view shown in FIG.

  In this liquid fragrance ejecting apparatus, one liquid fragrance storage tank and another liquid fragrance storage tank store different liquid fragrances. Accordingly, this liquid fragrance ejecting apparatus can simultaneously eject different liquid fragrances in the same space. The different liquid fragrances include not only liquid fragrances having different types of components but also liquid fragrances containing the same component but having different concentrations.

  According to this, since two or more kinds of liquid fragrances can be sprayed simultaneously, it is possible to generate a fragrance other than the fragrance brought about by the liquid fragrance alone stored in the liquid fragrance storage tank. Further, various fragrances can be generated by changing the amount of liquid fragrance ejected from each ejection port 71-4a.

(Driving method of liquid fragrance injection device)
Next, a driving method applied to the above-described liquid perfume ejecting apparatus will be described with reference to FIGS. 9 to 11, (A) is a drive signal (drive voltage signal) applied to the piezoelectric body, and (B) is displacement in the positive direction of the Z-axis of the piezoelectric body (accordingly, volume displacement of the pressurizing chamber). , (C) shows the displacement in the positive direction of the Z-axis of the injection port forming surface.

(First driving method)
FIG. 9 shows the most basic driving method of the liquid perfume ejecting apparatus. As shown in FIG. 9A, the electric control device 40 increases from 0 (V) to a predetermined voltage Vm at a constant rate of change, and then maintains the voltage Vm for a predetermined time T1, and thereafter A drive signal that decreases to 0 (V) at a constant change rate is applied to the piezoelectric body. In addition, when a predetermined time T2 elapses after the drive voltage becomes 0 (V), the electric control device 40 again applies the drive voltage having the waveform to the piezoelectric body.

  The displacement of the piezoelectric body follows the change of the drive voltage as shown in FIG. Further, since the displacement of the piezoelectric body is transmitted to the injection port forming surface through the substrate of the injection device, the displacement of the injection port forming surface also follows the change in the drive voltage as shown in FIG. To do. When the drive voltage changes from 0 (V) toward the voltage Vm, the displacement of the piezoelectric body changes in the negative Z-axis direction. Accordingly, the volume of the pressurizing chamber is reduced. As a result, the liquid fragrance in the pressurizing chamber is pressurized and discharged from the ejection port in the positive direction of the Z-axis, and becomes a droplet having a small particle diameter due to the surface tension. The above is the basic operation.

(Second driving method)
FIG. 10 shows a second driving method of the liquid perfume ejecting apparatus. In the second drive method, the first drive is performed only in that the drive signal is slightly vibrated with the amplitude Va and the frequency fa during the predetermined time T2 in which the drive signal is maintained at 0 (V) in the first drive method. It is different from the method. The minute vibration of the drive voltage during the predetermined period T2 causes the piezoelectric body to vibrate slightly, and thus causes the injection port forming surface to vibrate. However, the amplitude Va and the frequency fa are determined so that the liquid fragrance is not ejected from the ejection port due to the minute vibration.

  In other words, in the liquid perfume ejecting apparatus to which the second driving method is applied, the electric control unit ejects the liquid perfume from the ejection nozzle by greatly reducing the volume of the piezoelectric body pressurizing chamber from the initial volume with respect to the piezoelectric body. After that, the volume of the pressurizing chamber is returned to the same initial volume, and then the volume of the pressurizing chamber is repeatedly increased and decreased within a short time within the range where the liquid fragrance is not ejected from the ejection nozzle, and the ejection port forming surface is vibrated. The drive signal is generated so as to repeatedly execute a series of operations.

  According to this, the injection of the liquid fragrance is performed intermittently. Further, during the period from the end of the injection of the liquid fragrance to the start of the next injection (a period corresponding to the aforementioned predetermined period T2), the volume of the pressurizing chamber is repeatedly increased or decreased within a short time, thereby forming the injection port. The surface vibrates slightly. As a result, since the liquid fragrance | flavor adhering to the edge part and peripheral part of an injection port can be dropped (it sifts off by vibration), the liquid fragrance | flavor injection apparatus can perform the stable injection.

(Third driving method)
FIG. 11 shows a third driving method of the liquid perfume ejecting apparatus. As shown in FIG. 11A, the third driving method is a method of applying a driving signal having a trapezoidal waveform similar to the driving signal in the first driving method to the piezoelectric body. The driving signal in the third driving method changes between 0 (V) and the voltage Vn, and the cycle is Tn. The voltage Vn and the period Tn are selected so as to periodically displace the injection port forming surface in the Z-axis direction (that is, the streamline direction of the injection nozzle) as shown in FIG. .

  That is, the voltage Vn and the period Tn are configured so that the liquid perfume is ejected from the ejection nozzle by displacing the ejection port forming surface periodically and continuously (for example, in a sine wave shape) in the streamline direction of the ejection nozzle. It has been decided.

  According to this, as shown in FIG. 12A, when the injection port forming surface IM is displaced to the pressurizing chamber side, the liquid fragrance starts to protrude from the injection port of the injection nozzle N in a columnar shape. Next, as shown in FIGS. 12B to 12D, the injection port forming surface IM moves in a direction opposite to the growth direction of the columnar liquid fragrance. Therefore, the liquid fragrance injection port side protruding in a columnar shape moves backward (moves in the direction opposite to the injection direction and moves toward the pressurizing chamber) while being dragged by the wall surface of the injection nozzle. As a result, the diameter of the base portion of the liquid fragrance protruding in a columnar shape is reduced, and a constricted portion is generated in the same portion, and the liquid fragrance is detached from the same portion as shown in FIG. . Therefore, the droplet diameter of the liquid fragrance becomes smaller than when the liquid fragrance is made fine particles only by the surface tension of the liquid fragrance. Therefore, according to this driving method, the liquid perfume can be ejected as finer droplets.

(Fourth driving method)
FIG. 13 shows a fourth driving method of the liquid flavor injection device. As shown in FIG. 13A, the fourth driving method is a method in which a driving signal similar to the driving signal in the second driving method shown in FIG. However, the minute vibration of the driving voltage in the predetermined period T2 is not intended to cause the minute vibration of the injection port forming surface, and as shown in FIG. It aims at raising the temperature of the liquid fragrance | flavor in a pressurization chamber with the accompanying heat_generation | fever.

  In other words, the drive signal given to the piezoelectric body by the electric control device is such that the volume of the pressurizing chamber is increased after the piezoelectric body ejects the liquid fragrance from the ejection nozzle by greatly reducing the volume of the pressurizing chamber from the initial volume. This is a drive signal for raising the temperature of the liquid fragrance in the pressurizing chamber by returning to the initial volume and then increasing the temperature of the piezoelectric body by vibrating the piezoelectric body within a range where the liquid fragrance is not ejected from the ejection nozzle.

  According to this, since the temperature of the liquid fragrance in the pressurizing chamber increases due to the vibration of the piezoelectric body, the viscosity of the liquid fragrance in the pressurizing chamber decreases. As a result, the liquid fragrance is easily split when ejected from the ejection nozzle, and is ejected as finer fine particles.

(Fifth driving method)
FIG. 14 shows a fifth driving method of the liquid flavor injection device. In the fifth driving method, the driving vibration obtained by superimposing a noise-like signal with extremely small period and displacement (amplitude) on the driving signal with relatively large period and displacement shown in FIG. It is a method of giving to the body.

  In other words, the drive signal given to the piezoelectric body by the electric control device is such that the volume of the pressurizing chamber is increased after the piezoelectric body ejects the liquid fragrance from the ejection nozzle by greatly reducing the volume of the pressurizing chamber from the initial volume. Drive to return to the initial volume and continuously increase / decrease the volume of the pressurizing chamber within a range in which the liquid fragrance is not ejected from the ejection nozzle in a cycle sufficiently short with respect to the cycle of the liquid fragrance ejection operation. Signal.

  According to this, as a result of continuously increasing / decreasing the volume of the pressurizing chamber in a sufficiently short cycle with respect to the cycle of the liquid perfume injection operation (ie, large pressurization and subsequent depressurization), as shown in FIG. As shown to A) and (B), a several wave generate | occur | produces in the meniscus (liquid level) M of the liquid fragrance | flavor in the injection port of the injection nozzle N. As shown in FIG. As a result, as shown in FIG. 15C, the liquid fragrance is split from the tops of the plurality of waves generated in the meniscus M, so that the liquid fragrance can be generated more finely.

(First Modification of Liquid Perfume Injecting Device)
Next, a first modification of the liquid flavor injection device according to the present invention will be described with reference to FIG. This liquid perfume ejecting apparatus replaces the ejecting device 30 of the liquid perfume ejecting apparatus 10 according to the first embodiment with the ejecting device 80, and is only provided with a plate 90 for vaporizing liquid perfume. 10 and different. Therefore, the following description will be made focusing on such differences.

  The injection device 80 has substantially the same structure as the injection device 30. However, the injection port formation surface of the injection device 80 is disposed at an angle of 90 ° with respect to the horizontal plane.

  The plate 90 is arranged and configured to face the injection port 82 (and the injection port forming surface) of the injection nozzle 81. Hereinafter, the surface P of the plate facing the ejection port is referred to as a facing surface P. The opposing surface P is arranged so that the liquid perfume droplets ejected from the ejection port 82 are directly attached. The plate 90 is formed from a porous body. In this case, at least the facing surface P side portion of the plate 90 may be formed of a porous body.

  According to this modified example, a part of the liquid fragrance ejected from the ejection port 82 flies through the space, directly adheres to the plate 90, and is vaporized when heat is applied from the plate 90. Therefore, this liquid fragrance injection device can promote vaporization of the liquid fragrance. Further, at least the facing surface P side of the plate 90 is formed of a porous body. Since the porous body has a large surface area, more heat can be given to the liquid perfume. As a result, the vaporization of the liquid fragrance can be further promoted.

  In addition, the injection device 80 may be arrange | positioned and comprised so that the injection port formation surface may incline with respect to a horizontal surface only by the angle (alpha) larger than a fall angle and smaller than 90 degrees similarly to the injection device 30. FIG. In this case, it is desirable that the opposite surface P of the injection port forming surface of the plate 90 is also inclined by the angle α.

(Second modification of liquid perfume injection device)
Next, a second modification of the liquid flavor injection device according to the present invention will be described with reference to FIG. The liquid perfume ejecting apparatus 100 is an apparatus in which a fan (blower) 110 is added to the liquid perfume ejecting apparatus 10 according to the first embodiment. The fan 110 is a direction that intersects the ejection direction of the liquid fragrance from the ejection port 31-4a of the ejection device 30, and blows air toward the space where the fragrance is generated by the liquid fragrance.

  According to this, vaporization of the liquid fragrance | air_jet injected from the injection device 30 can be accelerated | stimulated further by the ventilation of the fan 110. FIG.

(Third Modification of Liquid Perfume Injecting Device)
Next, a third modification of the liquid flavor injection device according to the present invention will be described with reference to FIG. The liquid fragrance injection device 120 is a device in which a liquid injection pump 130 is added to the liquid fragrance injection device 10 according to the first embodiment.

  The liquid injection pump 130 is interposed in the connection pipe 21. The liquid suction port of the liquid injection pump 130 communicates with the bottom of the liquid fragrance storage tank 20. The discharge port of the liquid injection pump 130 is in communication with the liquid injection port 31-1 of the ejection device 30. The liquid injection pump 130 is electrically connected to the electric control device 40 and is driven by the electric control device 40.

  According to this, for example, when it is necessary to fill the liquid fragrance into the injection device 30 for the reason of starting to use the liquid fragrance injection device 10, the liquid injection pump 130 is driven and the liquid is injected into the injection device 30. Perfume is forcibly filled. Therefore, regardless of the positional relationship between the ejection device 30 and the liquid fragrance storage tank 20, the liquid fragrance can be reliably filled into the ejection device 30.

  As described above, according to each embodiment of the liquid perfume ejecting apparatus according to the present invention, the liquid perfume can be stably ejected while being atomized to generate a desired scent. In addition, this invention is not limited to the said embodiment, A various modification can be employ | adopted within the scope of the present invention. For example, a film-type piezoelectric element made of an electrostrictive element or an antiferroelectric film can be used as the actuator instead of the piezoelectric body. Furthermore, the electrostatic force generated between the electrodes facing each other through the gap and the deformation force generated in the shape memory alloy by energization heating, which are actively studied in micromachine research, are used instead of the force generated by the piezoelectric body. Also good. Moreover, you may comprise an injection device with a metal.

FIG. 1 is a diagram showing an outline of a liquid perfume ejecting apparatus according to the first embodiment of the present invention. FIG. 2 is a front view of the injection device shown in FIG. FIG. 3 is a cross-sectional view of the ejection device taken along a plane along line 1-1 in FIG. FIG. 4 is a front view of an ejection device provided in the liquid fragrance ejection device according to the second embodiment of the present invention. FIG. 5 is a cross-sectional view of the ejection device taken along a plane along line 2-2 in FIG. FIG. 6 is a front view of an ejection device provided in the liquid fragrance ejection device according to the third embodiment of the present invention. FIG. 7 is a cross-sectional view of the ejection device taken along a plane along line 3-3 in FIG. FIG. 8 is a front view of an ejection device provided in the liquid fragrance ejection device according to the fourth embodiment of the present invention. FIG. 9 is a time chart showing the driving signal, the displacement of the piezoelectric body, and the displacement of the ejection port forming surface in the first driving method of the liquid flavor injection device according to the present invention. FIG. 10 is a time chart showing the driving signal, the displacement of the piezoelectric body, and the displacement of the ejection port forming surface in the second driving method of the liquid flavor injection device according to the present invention. FIG. 11 is a time chart showing the drive signal, the displacement of the piezoelectric body, and the displacement of the ejection port forming surface in the third drive method of the liquid flavor injection device according to the present invention. FIG. 12 is a diagram illustrating a state of liquid droplets near the ejection port in the third driving method. FIG. 13 is a time chart showing the drive signal and the temperature of the liquid fragrance in the pressurized chamber in the fourth drive method of the liquid fragrance injection apparatus according to the present invention. FIG. 14 is a time chart showing drive signals in the fifth drive method of the liquid flavor injection device according to the present invention. FIG. 15 is a diagram illustrating a state of liquid droplets near the ejection port in the fifth driving method. FIG. 16 is a view showing an ejection device and a plate of a first modification of the liquid perfume ejecting apparatus according to the present invention. FIG. 17 is a diagram showing an outline of a second modification of the liquid flavor injection device according to the present invention. FIG. 18 is a diagram showing an outline of a third modification of the liquid flavor injection device according to the present invention. FIG. 19 is a diagram showing an outline of a conventional liquid perfume ejecting apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Liquid perfume injection apparatus, 20 ... Liquid perfume storage tank, 21 ... Connection pipe, 30 ... Injection device, 31 ... Base | substrate, 31a-31c, 32a-32c ... Ceramic sheet, 31-1 ... Liquid inlet, 31- 2 ... Liquid supply passage, 31-3 ... Liquid supply hole, 31-4 ... Injection nozzle, 31-4a ... Injection port, 32 ... Pump, 32-1 ... Liquid introduction hole, 32-2 ... Pressure chamber, 32- DESCRIPTION OF SYMBOLS 3 ... Liquid discharge hole, 32-4 ... Piezoelectric body, 40 ... Electric control apparatus, 50 ... Injection device, 51 ... Liquid-repellent part, 52 ... Lipophilic part.

Claims (17)

A liquid fragrance storage tank for storing liquid fragrance;
An introduction passage connected to the liquid fragrance storage tank, a pressurizing chamber for introducing the liquid fragrance from the liquid fragrance storage tank through the introduction passage, one end connected to the same pressure chamber, and an injection port at the other end An injection device including an injection nozzle for injecting the liquid perfume in the same pressure chamber into the external space and an actuator for pressurizing the liquid perfume in the same pressure chamber in response to the drive signal;
An electric control device for applying a drive signal to the actuator;
A liquid perfume ejecting apparatus that ejects the liquid perfume into the external space through the ejection nozzle in response to the drive vibration,
The injection device has a wall in which a portion including the injection port of the injection nozzle is formed, and when the liquid perfume injection device is in a normal use state, the surface on which the injection port of the wall is formed. A liquid fragrance injection device configured such that a certain injection port forming surface is not in a plane including a vertical vertical direction and is inclined at an angle larger than a falling angle of the liquid fragrance with respect to the same surface. In the liquid fragrance injection device according to claim 1,
A liquid perfume ejecting apparatus in which a liquid repellent part for the liquid perfume is formed on the surface of the ejection port forming surface and in the vicinity of the outer peripheral part of the ejection port. In the liquid fragrance injection device according to claim 2,
The liquid repellent portion is a liquid perfume ejecting device formed of a fluorine-based liquid repellent. In the liquid fragrance injection device according to claim 2 or 3,
A liquid perfume ejecting apparatus in which a lyophilic portion for the liquid perfume is formed on the surface of the ejection port forming surface and around the liquid repellent portion. In the liquid fragrance injection device according to claim 4,
The lyophilic part is a liquid perfume ejecting apparatus made of a porous material. In the liquid fragrance injection device according to any one of claims 1 to 5,
In a state where the liquid fragrance is filled in the ejection device, the liquid fragrance liquid level in the liquid fragrance storage tank is positioned above any of the introduction passage, the pressurizing chamber, and the ejection nozzle. Liquid fragrance injection device. In the liquid fragrance injection device according to any one of claims 1 to 6,
The pressurizing chamber of the ejection device is a liquid perfume ejecting apparatus in which one end of the ejection nozzle is connected to the uppermost portion of the pressurizing chamber in a state where the ejecting device is filled with the liquid perfume. In the liquid fragrance injection device according to claim 7,
The said injection nozzle is a liquid fragrance | flavor injection apparatus formed so that the streamline direction of the liquid fragrance | flavor in the same injection nozzle might have a component which always faces upwards from the said one end toward the said other end. In the liquid fragrance injection device according to any one of claims 1 to 8,
A plurality of sets of the liquid fragrance storage tank and the jetting device are provided,
A liquid perfume ejecting apparatus configured such that at least one liquid perfume storage tank and another one of the liquid perfume storage tanks store different liquid perfumes and simultaneously inject different liquid perfumes into the same space. . In the liquid fragrance injection device according to any one of claims 1 to 9,
The actuator is configured to change the volume of the pressurizing chamber to pressurize and depressurize the liquid fragrance in the pressurizing chamber,
The electric control device is configured to reduce the volume of the pressurizing chamber after the liquid perfume is ejected from the ejection nozzle by greatly reducing the volume of the pressurizing chamber from the initial volume. Next, a series of operations for repeatedly increasing and decreasing the volume of the same pressure chamber within a short time within a range in which the same liquid fragrance is not injected from the same injection nozzle and vibrating the injection port forming surface are repeatedly executed. And a liquid perfume ejecting device for generating the drive signal. In the liquid fragrance injection device according to any one of claims 1 to 9,
The actuator is configured to change the volume of the pressurizing chamber to pressurize and depressurize the liquid fragrance in the pressurizing chamber,
The electric control unit is configured to increase or decrease the volume of the pressurizing chamber with respect to the actuator and periodically displace the injection port forming surface in the streamline direction of the injection nozzle from the injection nozzle. A liquid perfume ejecting apparatus that generates the drive signal so as to eject a perfume. In the liquid fragrance injection device according to any one of claims 1 to 9,
The actuator is a piezoelectric body,
The electric control device has the same volume of the pressurizing chamber after the liquid perfume is ejected from the ejection nozzle by greatly reducing the volume of the pressurizing chamber from the initial volume. The volume is returned to the initial volume, and then the temperature of the liquid fragrance in the pressurized chamber is increased by vibrating the piezoelectric body within a range where the liquid fragrance is not ejected from the ejection nozzle to increase the temperature of the piezoelectric body. As described above, the liquid perfume ejecting apparatus for generating the drive signal. In the liquid fragrance injection device according to any one of claims 1 to 9,
The actuator is a piezoelectric body,
The electric control device has the same volume of the pressurizing chamber after the liquid perfume is ejected from the ejection nozzle by greatly reducing the volume of the pressurizing chamber from the initial volume. In addition to returning to the initial volume, the piezoelectric body continuously reduces the volume of the pressurizing chamber within a range in which the liquid fragrance is not ejected from the ejection nozzle in a cycle sufficiently short with respect to the cycle of the liquid fragrance ejection operation. A liquid perfume ejecting device that generates the drive signal so as to be increased or decreased. A liquid fragrance storage tank for storing liquid fragrance;
An introduction passage connected to the liquid fragrance storage tank, a pressurizing chamber for introducing the liquid fragrance from the liquid fragrance storage tank through the introduction passage, one end connected to the same pressure chamber, and an injection port at the other end An injection device including an injection nozzle for injecting the liquid perfume in the same pressure chamber into the external space and an actuator for pressurizing the liquid perfume in the same pressure chamber in response to the drive signal;
An electric control device for applying a drive signal to the actuator;
A liquid perfume ejecting apparatus that ejects the liquid perfume into the external space through the ejection nozzle in response to the drive vibration,
A liquid perfume ejecting apparatus further comprising a plate that is disposed at a position where a part of the ejected liquid perfume adheres and promotes vaporization of the adhering liquid perfume. It is a liquid fragrance injection device according to claim 14,
A liquid perfume ejecting apparatus in which at least a surface side to which the ejected liquid perfume adheres is formed of a porous body A liquid fragrance storage tank for storing liquid fragrance;
An introduction passage connected to the liquid fragrance storage tank, a pressurizing chamber for introducing the liquid fragrance from the liquid fragrance storage tank through the introduction passage, one end connected to the same pressure chamber, and an injection port at the other end An injection device including an injection nozzle for injecting the liquid perfume in the same pressure chamber into the external space and an actuator for pressurizing the liquid perfume in the same pressure chamber in response to the drive signal;
An electric control device for applying a drive signal to the actuator;
A liquid perfume ejecting apparatus that ejects the liquid perfume into the external space through the ejection nozzle in response to the drive vibration,
The liquid fragrance | air_jet apparatus provided with the fan which blows in the direction which cross | intersects the injection direction of the liquid fragrance | air_jet injected from the said injection port. The liquid perfume ejecting apparatus according to any one of claims 1 to 16,
The said injection | pouring device is a liquid fragrance | flavor injection apparatus formed from ceramics.

Images