EP2823893B1 - Liquid sprayer - Google Patents
Liquid sprayer Download PDFInfo
- Publication number
- EP2823893B1 EP2823893B1 EP13197898.3A EP13197898A EP2823893B1 EP 2823893 B1 EP2823893 B1 EP 2823893B1 EP 13197898 A EP13197898 A EP 13197898A EP 2823893 B1 EP2823893 B1 EP 2823893B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transducer
- core
- liquid
- tip end
- spray
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000007788 liquid Substances 0.000 title claims description 119
- 239000007921 spray Substances 0.000 claims description 80
- 238000002791 soaking Methods 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000003595 mist Substances 0.000 description 21
- 238000001704 evaporation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 3
- 239000003205 fragrance Substances 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000002070 germicidal effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009688 liquid atomisation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0653—Details
- B05B17/0676—Feeding means
- B05B17/0684—Wicks or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
Definitions
- the present invention relates to a liquid sprayer.
- a sprayer As the liquid sprayer using the transducer, there is a sprayer, as disclosed in JP 2010-7899 A , including a liquid storage tank for storing spray liquid, a mist producing means for turning the spray liquid into mist, and a spray liquid supply means for supplying the spray liquid in the liquid storage tank to the mist producing means.
- the spray liquid supply means includes a first liquid retaining body having one end disposed at a predetermined position in the liquid storage tank to absorb the spray liquid in the liquid storage tank, a substantially cylindrical second liquid retaining body brought into contact with the other end of the first liquid retaining body and having a predetermined inside diameter and a predetermined outside diameter, and a third liquid retaining body having one end brought into contact with an outer peripheral face of the second liquid retaining body at predetermined contact pressure and the other end brought into contact with the mist producing means at predetermined contact pressure.
- a tip end face of the third liquid retaining body is in a horizontal direction and an entire back face of the transducer forming the mist producing means is in contact with the tip end face. Therefore, the spray liquid turned into the mist by the transducer is dispersed horizontally and it is impossible to widely disperse the spray liquid turned into the mist unless the sprayer is disposed in a high position.
- US2008041972 discloses an atomizer which includes a main body, a liquid container, a liquid delivery member being located above the container for sucking out the liquid, a power part and a spraying device.
- the spraying device is configured to take required power from the power part and is provided with an actuator to operate a vibratory plate.
- the vibratory plate is configured slantingly with respect to an end head of the liquid delivery member such that the liquid can be sprayed out in a tilted direction.
- US2004074984 discloses a vibratory plate liquid atomization device having a tilted orifice plate which is vibrated by a piezoelectric actuator.
- JP6320083 discloses an ultrasonic atomizer consisting of a piezoelectric vibrator and a diaphragm, which is always in contact with a liquid absorbing material under a specific load by pressure of a spring.
- the spray liquid turned into the mist can be widely dispersed by a transducer type liquid sprayer including a main body for supporting a spray liquid storage unit and a transducer inside itself, wherein the spray liquid storage unit includes a core for soaking up spray liquid stored in a storage tank to an outside of the storage tank, the transducer is in contact with a front side of a tip end portion of the core protruding from the storage tank of the spray liquid storage unit with a front face of the transducer oriented forward and upward, and a spray hole is formed in a position of the main body facing the front face of the transducer, even if the liquid sprayer is disposed in the relatively low position.
- a transducer type liquid sprayer including a main body for supporting a spray liquid storage unit and a transducer inside itself, wherein the spray liquid storage unit includes a core for soaking up spray liquid stored in a storage tank to an outside of the storage tank, the transducer is in contact with a front side of a tip end portion of the core
- a liquid sprayer including a main body for supporting a spray liquid storage unit and a transducer inside itself, wherein the spray liquid storage unit includes a core for soaking up spray liquid stored in a storage tank to an outside of the storage tank, the transducer is in contact with a front side of a tip end portion of the core protruding from the storage tank of the spray liquid storage unit with a front face of the transducer oriented forward and upward, and a spray hole is formed in a position of the main body facing the front face of the transducer.
- a front face of the tip end portion of the core extends in a vertical direction and an inclination angle of the front face of the transducer with respect to the front face of the tip end portion of the core is 10° to 45°.
- the core in either one of the above-described liquid sprayers, has a round peripheral face.
- the transducer in either one of the above-described liquid sprayers, is in contact with an edge portion of the front side of the tip end portion of the core.
- the transducer in either one of the above-described liquid sprayers, is in contact with and pressed against the core.
- the transducer forms a transducer unit fixed to a support unit mounted for turning in the main body and the transducer is pressed against the front side of the tip end portion of the core under own weight of the transducer unit.
- the invention employs the structure in which the transducer is in contact with the front side of the tip end portion of the core facing the spray hole with the front face of the transducer oriented forward and upward and the spray liquid retained by the core is turned into the mist by vibration of the transducer, the spray liquid turned into the mist by the transducer spouts forward and upward and can be dispersed widely.
- the transducer is in contact with the edge portion of the front side of the tip end portion of the core, a contact area of the transducer with the core can be small. As a result, only a small amount of spray liquid left without being turned into the mist is retained between the transducer and the core and evaporation of the spray liquid during stoppage is suppressed, which extends life of the storage tank.
- a liquid sprayer 1 includes a case main body 4 (main body) having a lid member 2 forming a front face side and a support member 3 forming a back face side.
- a spray liquid storage unit 5 for storing spray liquid for storing spray liquid
- a transducer unit 6 for turning the spray liquid stored in the spray liquid storage unit 5 into mist and a power supply unit 7 for supplying electric power to the transducer unit 6 are housed.
- the lid member 2 is formed by left and right side faces 10 and 11 and upper and lower faces 12 and 13 extending backward in rising manners from a front face 9 provided, at a substantially central portion thereof, with a spray hole 8 for discharging the spray liquid which has been turned into the mist and the left and right side faces 10 and 11 and the lower face 13 extend to be longer than the upper face 12.
- fitting shafts 14 to be connected to the support member 3 protrude to face each other from back upper end portions and support plates 15, 15 for supporting the transducer unit 6 are provided to face each other at positions above the spray hole 8.
- connecting holes 16 are formed in the opposite support plates 15 and each of the connecting holes 16 is formed by a circular hole 17 and a pair of fan-shaped holes 18 extending to be symmetric with respect to a point from the circular hole 17 (see an enlarged view of the connecting hole 16 shown in Fig. 4 ).
- a pair of lock holes 19, 19 is formed in the lower face 13.
- the support member 3 is formed by left and right side faces 21 and 22 and an upper face 23 extending forward in rising manners from a back face 20 disposed to be sandwiched between the opposite side faces 10 and 11 of the lid member 2.
- Fitting holes 24 in which the fitting shafts 14 of the lid member 2 are to be fitted are formed in back upper end portions of the left and right side faces 10 and 11. Therefore, the lid member 2 is connected to the support member 3 to be able to turn by using the fitting shafts 14 fitted in the fitting holes 24 in the support member 3 as rotary shafts.
- An upper face of the case main body 4 is formed by the upper face 12 of the lid member 2 and the upper face 23 of the support member 3 which are short.
- a box 25 housing the power supply unit 7 is fixed to an upper portion and a support shelf 26 on which the spray liquid storage unit 5 is disposed is fixed to a lower portion.
- resilient plates 27 having U shapes lying on their sides protrude forward with their only upper tip ends fixed to the back face 20 and lock pins 28 protruding downward from lower tip ends of the resilient plates 27 can move in a vertical direction as the resilient plates 27 bend.
- the lock pins 28 of the support member 3 are fitted in the lock holes 19 in the lid member 2 to lock opening and closing of the lid member 2 with respect to the support member 3.
- the spray liquid storage unit 5 is formed by a storage tank 29 for storing the spray liquid and a liquid soaking holder 30 for soaking up the spray liquid from the storage tank 29.
- the storage tank 29 has an opening portion 31, into which the liquid soaking holder 30 is inserted, on a front side of its upper face.
- the opening portion 31 is formed to protrude from the upper face of the storage tank 29 and has an outer peripheral face which is large in diameter on its tip end side and base end side.
- a step groove portion 32 is formed between the tip end side and the base end side.
- the liquid soaking holder 30 includes an outer tube portion 33 fitted and fixed into the opening portion 31 in the storage tank 29 and an inner tube portion 34 inserted through a hollow portion in the outer tube portion 33 and extending from an inside to an outside of the storage tank 29 and a circular cylindrical core 35 for soaking up the spray liquid in the storage tank 29 by utilizing capillarity is fixed in a hollow portion of the inner tube portion 34. Remaining portions remaining after forming a clearance between the outer tube portion 33 and the inner tube portion 34 are connected by a connecting bridge 36, which maintains internal pressure and external pressure of the storage tank 29 at the equal pressure. As a result, it is possible to prevent the spray liquid in the storage tank 29 from spouting as the internal pressure increases due to increase in air temperature.
- a tip end side of the inner tube portion 34 extending outside the storage tank 29 is formed to cover a tip end side of the core 35 protruding from the storage tank 29 and an opening window 38 is formed in the tip end side of the inner tube portion 34 so that only a front side of a tip end portion 37 of the core 35 is exposed.
- a seal body 39 is fixed to the outer tube portion 33 so as to surround an outer periphery of the outer tube portion 33.
- the core 35 is formed in the circular cylindrical shape.
- felt nonwoven fabric made of natural pulp, and material obtained by twining fibers such as polypropylene and polyethylene may be used.
- the power supply unit 7 is formed by a battery, a control board, and the like and housed in the box 25.
- a lower face of the box 25 is provided with a back holding plate 41 supported by a pair of hanging pieces 40, 40 extending downward and support pieces 42 extending downward from between the paired hanging pieces 40, 40 and from the box 25.
- the back holding plate 41 is formed in a U shape which is open forward and is formed in such a shape as to be fitted in the step groove portion 32 of the storage tank 29 disposed on the support shelf 26.
- Power-supply voltage of the power supply unit 7 may be set to be high enough to adapt to size of a space where the spray liquid is sprayed by the liquid sprayer 1. For example, DC 4.5 V, 6.0 V, and 7.5 V may be used. It is also possible that magnitude of the voltage can be changed.
- the transducer unit 6 includes a support arm 44 having a recessed shape and a transducer 46 in a thin plate shape and fixed to protrude from a center of a lateral bar portion 45 of the support arm 44, and the lateral bar portion 45 is provided with paired protecting pieces 47, 47 positioned parallel on opposite sides of the transducer 46.
- connecting shafts 49 protruding outward are provided.
- Each of the connecting shafts 49 includes a round shaft 50 and restricting shafts 51 extending to be symmetric with respect to a point from the round shaft 50 (see the enlarged view of the connecting shaft 49 shown in Fig. 4 ).
- the support arm 44 By fitting the opposite connecting shafts 49 into the connecting holes 16 in the support plates 15 provided to the inner side of the lid member 2, the support arm 44 is supported to be able to turn between the opposite support plates 15 of the lid member 2. Turning of the support arm 44 is restricted by interference between the restricting shafts 51 of the connecting shafts 49 and the fan-shaped holes 18 of the connecting holes 16.
- the lateral bar portion 45 provided astride tip ends of the opposite vertical bar portions 48, 48 is inclined to extend from the tip ends of the vertical bar portions 48, 48 toward the lid member 2.
- the power supply unit 7 is housed into the box 25 in the support member 3.
- the connecting shafts 49 of the support arm 44 are fitted into the connecting holes 16 formed in the opposite support plates 15 of the lid member 2 to support the support arm 44 between the opposite side faces 10 and 11 of the lid member 2.
- the opposite fitting shafts 14 of the lid member 2 are inserted into the opposite fitting holes 24 in the support member 3 to connect the lid member 2 to the support member 3 so that the lid member 2 can turn.
- an electric wire (not shown) extending from the power supply unit 7 is connected to the transducer 46 of the transducer unit 6.
- the spray liquid storage unit 5 formed by inserting the liquid soaking holder 30 into the opening portion 31 of the storage tank 29 is disposed on the support shelf 26 of the support member 3 and the step groove portion 32 of the spray liquid storage unit 5 is fitted into the back holding plate 41.
- the lid member 2 is closed onto the support member 3 and the lock pins 28 of the support member 3 are fitted into the lock holes 19 in the lid member 2 to thereby lock opening and closing of the lid member 2 with respect to the support member 3.
- the front holding plate 43 of the lid member 2 is fitted into the step groove portion 32 of the spray liquid storage unit 5 and the spray liquid storage unit 5 is fixed while sandwiched between the front and back holding plates 43 and 41.
- the transducer 46 and the tip end portion 37 of the core 35 with which the transducer 46 is in contact are exposed through the spray hole 8 in the lid member 2. If the electric power is supplied from the power supply unit 7 to vibrate the transducer 46, the spray liquid retained by the core 35 is turned into the mist by the vibration of the transducer 46 and dispersed forward and upward outside the case main body 4 through the spray hole 8.
- the tip end portion 37 of the core 35 in contact with the transducer 46 except the front side of the tip end portion 37 exposed through the opening window 38 is covered with the liquid soaking holder 30, it is possible to prevent the misty spray liquid, which has been turned into the mist by the transducer 46, from being sprayed inside the case main body 4 and the spray liquid from wastefully evaporating from the core 35.
- a positional relationship between the support arm 44 and the core 35 when the lid member 2 is opened and closed with respect to the support member 3 of the liquid sprayer 1 according to the embodiment will be described based on Figs. 6A to 7 .
- Figs. 6A to 6C a lower portion of the case main body 4, the box 25, and the power supply unit 7 are not shown and an enlarged view showing a relationship between the connecting shaft 51 of the support arm 44 and the connecting hole 16 of the support plate 15 is shown.
- the spray liquid storage unit 5 is fixed in the case main body 4 while sandwiched between the front and back holding plates 43 and 41.
- a back face of the transducer 46 comes into contact with an edge portion 52 of a front side of the tip end portion 37 of the core 35 exposed from the opening window 38 of the liquid soaking holder 30 and a front face of the transducer 46 faces the spray hole 8 while oriented forward and upward.
- the restricting shafts 51 of the connecting shafts 49 are not interfering with the fan-shaped holes 18 of the connecting holes 16 and therefore turning of the support arm 44 in a front-back direction is not restricted.
- the transducer 46 is in contact with and pressed against the edge portion 52 of the front side of the tip end portion 37 of the core 35 under own weight of the transducer unit 6.
- An inclination angle ⁇ between the front face of the transducer 46 and the flat front face of the core 35 oriented toward the spray hole 8 when the back face of the transducer 46 is in contact with the tip end portion 37 of the core 35 exposed from the opening window 38 is preferably 10° to 45° and more preferably 10° to 30°. If the inclination angle is larger than 45°, a horizontal dispersion distance of the spray liquid turned in to the mist is short and it is impossible to widely disperse the spray liquid. If the inclination angle is smaller than 10°, an upward dispersion distance of the spray liquid turned into the mist is insufficient and it is impossible to widely disperse the spray liquid. Moreover, a large amount of spray liquid accumulates in a clearance formed between the transducer and the core 35 and an evaporation amount of the spray liquid during stoppage increases to thereby shorten life of the storage tank.
- the spray hole 8 of the lid member 2 is formed to open in a portion of the lid member 2 facing a front face of the transducer 46 in a position in contact with the core 35 and a tubular passage extending from the spray hole 8 is formed in front of the transducer 46. In this way, the spray liquid turned into the mist by the transducer 46 is properly dispersed to the outside of the case main body 4.
- the core 35 according to the embodiment has a peripheral face formed into a round shape and the transducer is pressed under own weight of the transducer unit due to turning of the support arm to come in contact with the front side of the tip end portion of the core. Therefore, it is possible to easily and properly bring the back face of the transducer 46 and the tip end portion of the core 35 into contact with each other.
- the present embodiment is a variation of the core in First Embodiment described above and the same reference numerals as those in Figs. 1 to 6C designate the same or corresponding portions in Figs. 8A and 8B.
- Figs. 8A and 8B show a positional relationship between a core and a transducer when a support member is closed with respect to a lid member, wherein Fig. 8A is a vertical sectional view and Fig. 8B is an end view of the core and the transducer shown in Fig. 8A cut in a horizontal direction in a position where they are in contact with each other.
- the core 35 in the embodiment is formed in a shape of a square prism as shown in Fig. 8B . Any one of faces of the core 35 extending in the vertical direction is positioned to face a spray hole 8.
- a back face of the transducer 46 comes in contact with an edge portion 52 formed by a front face and an upper face positioned on a front side of a tip end portion 37 of the core 35 exposed from an opening window 38.
- a contact face between the transducer and the core is larger and efficiency of turning spray liquid into mist is increased as compared with First Embodiment described above and employing the circular cylindrical core.
- the shape of the core in the invention is not limited to those shown in the above-described respective embodiments. It is essential only that the shape of the core has the edge portion for coming in contact with the back face of the transducer on the front side of the tip end portion and facing the spray hole.
- the shape other than the front side of the tip end portion is not especially limited, if the core can soak up the spray liquid.
- the spray liquid in the invention may be fragrance, deodorant, germicide, or the like but is not limited to them.
- the spray liquid may be other agents which can be turned into mist by the ultrasonic vibration of the transducer.
- the center of gravity of the support arm is positioned on the back side of the axis of turning so that the force for turning backward acts on the support arm when the transducer fixed to the support arm is brought into contact with and pressed against the core in the method employed in First Embodiment described above, the method is not limited to it.
- resilient bodies such as springs may be disposed at connecting portions between the support arm and the support plates to thereby always press the support arm backward.
Description
- The present invention relates to a liquid sprayer.
- As is well known, there are conventionally spray cans using propellants as liquid sprayers for spraying liquid fragrance or the like. This spray can type liquid sprayer is not safe, because it requires use of flammable gas and such gas cannot be said to have a positive influence on a body. Therefore, in recent years, many transducer type liquid sprayers for spraying liquid fragrance or the like by using transducers for generating ultrasonic vibration have been developed.
- As the liquid sprayer using the transducer, there is a sprayer, as disclosed in
JP 2010-7899 A - In the structure of the sprayer disclosed in
JP 2010-7899 A -
US2008041972 discloses an atomizer which includes a main body, a liquid container, a liquid delivery member being located above the container for sucking out the liquid, a power part and a spraying device. The spraying device is configured to take required power from the power part and is provided with an actuator to operate a vibratory plate. The vibratory plate is configured slantingly with respect to an end head of the liquid delivery member such that the liquid can be sprayed out in a tilted direction. -
US2004074984 discloses a vibratory plate liquid atomization device having a tilted orifice plate which is vibrated by a piezoelectric actuator. -
JP6320083 - Therefore, it is a technical object to achieve a transducer type liquid sprayer which can widely disperse spray liquid turned into mist even if the liquid sprayer is disposed in a relatively low position. To realize the object, the present inventor has repeatedly carried out test production and experiments through a trial and error process. As a result, the inventor has found a notable fact that the spray liquid turned into the mist can be widely dispersed by a transducer type liquid sprayer including a main body for supporting a spray liquid storage unit and a transducer inside itself, wherein the spray liquid storage unit includes a core for soaking up spray liquid stored in a storage tank to an outside of the storage tank, the transducer is in contact with a front side of a tip end portion of the core protruding from the storage tank of the spray liquid storage unit with a front face of the transducer oriented forward and upward, and a spray hole is formed in a position of the main body facing the front face of the transducer, even if the liquid sprayer is disposed in the relatively low position.
- The above-described technical object can be achieved by the following aspects of the invention.
- According to an aspect of the invention, there is provided a liquid sprayer including a main body for supporting a spray liquid storage unit and a transducer inside itself, wherein the spray liquid storage unit includes a core for soaking up spray liquid stored in a storage tank to an outside of the storage tank, the transducer is in contact with a front side of a tip end portion of the core protruding from the storage tank of the spray liquid storage unit with a front face of the transducer oriented forward and upward, and a spray hole is formed in a position of the main body facing the front face of the transducer.
- According to an aspect of the invention, in the liquid sprayer, a front face of the tip end portion of the core extends in a vertical direction and an inclination angle of the front face of the transducer with respect to the front face of the tip end portion of the core is 10° to 45°.
- According to an aspect of the invention, in either one of the above-described liquid sprayers, the core has a round peripheral face.
- According to an aspect of the invention, in either one of the above-described liquid sprayers, the transducer is in contact with an edge portion of the front side of the tip end portion of the core.
- According to an aspect of the invention, in either one of the above-described liquid sprayers, the transducer is in contact with and pressed against the core.
- According to yet another aspect of the invention, in either one of the above-described liquid sprayers, the transducer forms a transducer unit fixed to a support unit mounted for turning in the main body and the transducer is pressed against the front side of the tip end portion of the core under own weight of the transducer unit.
- Because the invention employs the structure in which the transducer is in contact with the front side of the tip end portion of the core facing the spray hole with the front face of the transducer oriented forward and upward and the spray liquid retained by the core is turned into the mist by vibration of the transducer, the spray liquid turned into the mist by the transducer spouts forward and upward and can be dispersed widely. Moreover, because the transducer is in contact with the edge portion of the front side of the tip end portion of the core, a contact area of the transducer with the core can be small. As a result, only a small amount of spray liquid left without being turned into the mist is retained between the transducer and the core and evaporation of the spray liquid during stoppage is suppressed, which extends life of the storage tank.
-
Fig. 1 is a perspective view showing an outward appearance of a liquid sprayer according to First Embodiment; -
Fig. 2 is a vertical sectional view of the liquid sprayer shown inFig. 1 ; -
Fig. 3 is a front view of an inside of a lid member shown inFig. 1 ; -
Fig. 4 is a sectional view showing a section of the lid member shown inFig. 3 and taken along line A-A; -
Fig. 5 is a front view showing an inside of a support member shown inFig. 1 ; -
Figs. 6A, 6B, and 6C are explanatory sectional views showing open and closed states of the lid member and the support member of the liquid sprayer shown inFig. 1 ; -
Fig. 7 is an end view of a core and a transducer shown inFig. 6A cut in a horizontal direction in a position where they are in contact with each other; and -
Figs. 8A and 8B are explanatory views showing a positional relationship between a core and a transducer according to First Variation of Second Embodiment. - Embodiments of the present invention will be described below.
- As shown in
Fig. 1 , aliquid sprayer 1 according to First Embodiment includes a case main body 4 (main body) having alid member 2 forming a front face side and asupport member 3 forming a back face side. In the casemain body 4, as shown inFig. 2 , a sprayliquid storage unit 5 for storing spray liquid, atransducer unit 6 for turning the spray liquid stored in the sprayliquid storage unit 5 into mist, and a power supply unit 7 for supplying electric power to thetransducer unit 6 are housed. - As shown in
Figs. 2 to 4 , thelid member 2 is formed by left and right side faces 10 and 11 and upper andlower faces front face 9 provided, at a substantially central portion thereof, with aspray hole 8 for discharging the spray liquid which has been turned into the mist and the left and right side faces 10 and 11 and thelower face 13 extend to be longer than theupper face 12. On inner sides of the left and right side faces 10 and 11, fittingshafts 14 to be connected to thesupport member 3 protrude to face each other from back upper end portions andsupport plates transducer unit 6 are provided to face each other at positions above thespray hole 8. As shown inFig. 4 , connectingholes 16 are formed in theopposite support plates 15 and each of the connectingholes 16 is formed by acircular hole 17 and a pair of fan-shaped holes 18 extending to be symmetric with respect to a point from the circular hole 17 (see an enlarged view of the connectinghole 16 shown inFig. 4 ). A pair oflock holes lower face 13. - As shown in
Figs. 2 and5 , thesupport member 3 is formed by left and right side faces 21 and 22 and anupper face 23 extending forward in rising manners from aback face 20 disposed to be sandwiched between theopposite side faces lid member 2. Fittingholes 24 in which thefitting shafts 14 of thelid member 2 are to be fitted are formed in back upper end portions of the left and right side faces 10 and 11. Therefore, thelid member 2 is connected to thesupport member 3 to be able to turn by using thefitting shafts 14 fitted in thefitting holes 24 in thesupport member 3 as rotary shafts. An upper face of the casemain body 4 is formed by theupper face 12 of thelid member 2 and theupper face 23 of thesupport member 3 which are short. - Inside the
back face 20 of thesupport member 3, abox 25 housing the power supply unit 7 is fixed to an upper portion and asupport shelf 26 on which the sprayliquid storage unit 5 is disposed is fixed to a lower portion. At a lower end portion in thesupport member 3,resilient plates 27 having U shapes lying on their sides protrude forward with their only upper tip ends fixed to theback face 20 and lockpins 28 protruding downward from lower tip ends of theresilient plates 27 can move in a vertical direction as theresilient plates 27 bend. In this way, when thelid member 2 is closed onto thesupport member 3, thelock pins 28 of thesupport member 3 are fitted in thelock holes 19 in thelid member 2 to lock opening and closing of thelid member 2 with respect to thesupport member 3. If thesupport shelf 26 is movable in the vertical direction with respect to the inside of theback face 20 of thesupport member 3 or can be replaced, the sprayliquid storage units 5 of different sizes can be disposed. - As shown in
Figs. 2 and5 , the sprayliquid storage unit 5 is formed by astorage tank 29 for storing the spray liquid and aliquid soaking holder 30 for soaking up the spray liquid from thestorage tank 29. - The
storage tank 29 has anopening portion 31, into which theliquid soaking holder 30 is inserted, on a front side of its upper face. Theopening portion 31 is formed to protrude from the upper face of thestorage tank 29 and has an outer peripheral face which is large in diameter on its tip end side and base end side. As a result, astep groove portion 32 is formed between the tip end side and the base end side. - The
liquid soaking holder 30 includes anouter tube portion 33 fitted and fixed into theopening portion 31 in thestorage tank 29 and aninner tube portion 34 inserted through a hollow portion in theouter tube portion 33 and extending from an inside to an outside of thestorage tank 29 and a circularcylindrical core 35 for soaking up the spray liquid in thestorage tank 29 by utilizing capillarity is fixed in a hollow portion of theinner tube portion 34. Remaining portions remaining after forming a clearance between theouter tube portion 33 and theinner tube portion 34 are connected by a connectingbridge 36, which maintains internal pressure and external pressure of thestorage tank 29 at the equal pressure. As a result, it is possible to prevent the spray liquid in thestorage tank 29 from spouting as the internal pressure increases due to increase in air temperature. A tip end side of theinner tube portion 34 extending outside thestorage tank 29 is formed to cover a tip end side of thecore 35 protruding from thestorage tank 29 and anopening window 38 is formed in the tip end side of theinner tube portion 34 so that only a front side of atip end portion 37 of thecore 35 is exposed. Aseal body 39 is fixed to theouter tube portion 33 so as to surround an outer periphery of theouter tube portion 33. - By fitting a cap (not shown) into the
step groove portion 32 formed at theopening portion 31 of thestorage tank 29, it is possible to prevent evaporation of the spray liquid from thestorage tank 29. - The
core 35 is formed in the circular cylindrical shape. As material of thecore 35, felt, nonwoven fabric made of natural pulp, and material obtained by twining fibers such as polypropylene and polyethylene may be used. - As shown in
Figs. 2 to 5 , the power supply unit 7 is formed by a battery, a control board, and the like and housed in thebox 25. A lower face of thebox 25 is provided with aback holding plate 41 supported by a pair of hangingpieces support pieces 42 extending downward from between the paired hangingpieces box 25. Theback holding plate 41 is formed in a U shape which is open forward and is formed in such a shape as to be fitted in thestep groove portion 32 of thestorage tank 29 disposed on thesupport shelf 26. In a state in which thestep groove portion 32 of thestorage tank 29 is fitted in theback holding plate 41 of thebox 25, a back side of theinner tube portion 34 protruding from the openingportion 31 of thestorage tank 29 is supported by thesupport pieces 42. Inside thelid member 2, afront holding plate 43 positioned to face theback holding plate 41 protrudes. - Power-supply voltage of the power supply unit 7 may be set to be high enough to adapt to size of a space where the spray liquid is sprayed by the
liquid sprayer 1. For example, DC 4.5 V, 6.0 V, and 7.5 V may be used. It is also possible that magnitude of the voltage can be changed. As power for the power supply unit 7, AC supplied from a battery or a wall outlet may be converted into DC by a converter and used and both the battery and the converter may be mounted so as to switch between the power from the battery and the power from the wall outlet. - As shown in
Figs. 2 and3 , thetransducer unit 6 includes asupport arm 44 having a recessed shape and atransducer 46 in a thin plate shape and fixed to protrude from a center of alateral bar portion 45 of thesupport arm 44, and thelateral bar portion 45 is provided with paired protectingpieces transducer 46. At tip ends of thevertical bar portions support arm 44, connectingshafts 49 protruding outward are provided. Each of the connectingshafts 49 includes around shaft 50 and restrictingshafts 51 extending to be symmetric with respect to a point from the round shaft 50 (see the enlarged view of the connectingshaft 49 shown inFig. 4 ). By fitting the opposite connectingshafts 49 into the connectingholes 16 in thesupport plates 15 provided to the inner side of thelid member 2, thesupport arm 44 is supported to be able to turn between theopposite support plates 15 of thelid member 2. Turning of thesupport arm 44 is restricted by interference between the restrictingshafts 51 of the connectingshafts 49 and the fan-shapedholes 18 of the connecting holes 16. When thesupport arm 44 is supported between theopposite support plates lid member 2, thelateral bar portion 45 provided astride tip ends of the oppositevertical bar portions vertical bar portions lid member 2. - Next, a method of assembling the
liquid sprayer 1 according to the embodiment will be described. - First, the power supply unit 7 is housed into the
box 25 in thesupport member 3. The connectingshafts 49 of thesupport arm 44 are fitted into the connectingholes 16 formed in theopposite support plates 15 of thelid member 2 to support thesupport arm 44 between the opposite side faces 10 and 11 of thelid member 2. Next, the oppositefitting shafts 14 of thelid member 2 are inserted into the opposite fitting holes 24 in thesupport member 3 to connect thelid member 2 to thesupport member 3 so that thelid member 2 can turn. After that, an electric wire (not shown) extending from the power supply unit 7 is connected to thetransducer 46 of thetransducer unit 6. Then, the sprayliquid storage unit 5 formed by inserting theliquid soaking holder 30 into the openingportion 31 of thestorage tank 29 is disposed on thesupport shelf 26 of thesupport member 3 and thestep groove portion 32 of the sprayliquid storage unit 5 is fitted into theback holding plate 41. Lastly, thelid member 2 is closed onto thesupport member 3 and the lock pins 28 of thesupport member 3 are fitted into the lock holes 19 in thelid member 2 to thereby lock opening and closing of thelid member 2 with respect to thesupport member 3. At this time, thefront holding plate 43 of thelid member 2 is fitted into thestep groove portion 32 of the sprayliquid storage unit 5 and the sprayliquid storage unit 5 is fixed while sandwiched between the front and back holdingplates - The
transducer 46 and thetip end portion 37 of the core 35 with which thetransducer 46 is in contact are exposed through thespray hole 8 in thelid member 2. If the electric power is supplied from the power supply unit 7 to vibrate thetransducer 46, the spray liquid retained by thecore 35 is turned into the mist by the vibration of thetransducer 46 and dispersed forward and upward outside the casemain body 4 through thespray hole 8. Because thetip end portion 37 of the core 35 in contact with thetransducer 46 except the front side of thetip end portion 37 exposed through the openingwindow 38 is covered with the liquid soakingholder 30, it is possible to prevent the misty spray liquid, which has been turned into the mist by thetransducer 46, from being sprayed inside the casemain body 4 and the spray liquid from wastefully evaporating from thecore 35. - To replace the spray
liquid storage unit 5, by inserting a pin (not shown) into the lock holes 19 in thelid member 2 to push the lock pins 28 inward, the locking of thelid member 2 to thesupport member 3 is released and thelid member 2 is turned forward with respect to thesupport member 3. Next, the old sprayliquid storage unit 5 is detached from thesupport shelf 26 and a new sprayliquid storage unit 5 is mounted to theback holding plate 41. Lastly, thelid member 2 is closed onto thesupport member 3 and locked. - Next, a positional relationship between the
support arm 44 and the core 35 when thelid member 2 is opened and closed with respect to thesupport member 3 of theliquid sprayer 1 according to the embodiment will be described based onFigs. 6A to 7 . InFigs. 6A to 6C , a lower portion of the casemain body 4, thebox 25, and the power supply unit 7 are not shown and an enlarged view showing a relationship between the connectingshaft 51 of thesupport arm 44 and the connectinghole 16 of thesupport plate 15 is shown. - First, if the
lid member 2 is completely closed onto thesupport member 3, the sprayliquid storage unit 5 is fixed in the casemain body 4 while sandwiched between the front and back holdingplates Fig. 6A , a back face of thetransducer 46 comes into contact with anedge portion 52 of a front side of thetip end portion 37 of the core 35 exposed from the openingwindow 38 of the liquid soakingholder 30 and a front face of thetransducer 46 faces thespray hole 8 while oriented forward and upward. In this state, the restrictingshafts 51 of the connectingshafts 49 are not interfering with the fan-shapedholes 18 of the connectingholes 16 and therefore turning of thesupport arm 44 in a front-back direction is not restricted. Furthermore, because thelateral bar portion 45 is positioned on the front side of the axis of turning of thesupport arm 44, a force for turning backward is always acting on thesupport arm 44. Therefore, thetransducer 46 is in contact with and pressed against theedge portion 52 of the front side of thetip end portion 37 of thecore 35 under own weight of thetransducer unit 6. - Next, if the
lid member 2 is completely opened from thesupport member 3, as shown inFig. 6B , the back face of thetransducer 46 is separated from theedge portion 52 of the front side of thetip end portion 37 of thecore 35. At this time, the restrictingshafts 51 of the connectingshafts 49 are interfering with the fan-shapedholes 18 of the connecting holes 16. As a result, the backward turning of thesupport arm 44 is restricted and thesupport arm 44 is lifted together with thelid member 2. - Then, if the
lid member 2 is closed to some extent toward thesupport member 3, as shown inFig. 6C , a lower end of the back face of thetransducer 46 fixed to thesupport arm 44 comes into contact with theedge portion 52 of the front side of thetip end portion 37 of thecore 35. - If the
lid member 2 is completely closed onto thesupport member 3, they come into the state shown inFig. 6A . - An inclination angle θ between the front face of the
transducer 46 and the flat front face of the core 35 oriented toward thespray hole 8 when the back face of thetransducer 46 is in contact with thetip end portion 37 of the core 35 exposed from the openingwindow 38 is preferably 10° to 45° and more preferably 10° to 30°. If the inclination angle is larger than 45°, a horizontal dispersion distance of the spray liquid turned in to the mist is short and it is impossible to widely disperse the spray liquid. If the inclination angle is smaller than 10°, an upward dispersion distance of the spray liquid turned into the mist is insufficient and it is impossible to widely disperse the spray liquid. Moreover, a large amount of spray liquid accumulates in a clearance formed between the transducer and thecore 35 and an evaporation amount of the spray liquid during stoppage increases to thereby shorten life of the storage tank. - The
spray hole 8 of thelid member 2 is formed to open in a portion of thelid member 2 facing a front face of thetransducer 46 in a position in contact with thecore 35 and a tubular passage extending from thespray hole 8 is formed in front of thetransducer 46. In this way, the spray liquid turned into the mist by thetransducer 46 is properly dispersed to the outside of the casemain body 4. - The core 35 according to the embodiment has a peripheral face formed into a round shape and the transducer is pressed under own weight of the transducer unit due to turning of the support arm to come in contact with the front side of the tip end portion of the core. Therefore, it is possible to easily and properly bring the back face of the
transducer 46 and the tip end portion of the core 35 into contact with each other. - The present embodiment is a variation of the core in First Embodiment described above and the same reference numerals as those in
Figs. 1 to 6C designate the same or corresponding portions inFigs. 8A and 8B. Figs. 8A and 8B show a positional relationship between a core and a transducer when a support member is closed with respect to a lid member, whereinFig. 8A is a vertical sectional view andFig. 8B is an end view of the core and the transducer shown inFig. 8A cut in a horizontal direction in a position where they are in contact with each other. - The core 35 in the embodiment is formed in a shape of a square prism as shown in
Fig. 8B . Any one of faces of the core 35 extending in the vertical direction is positioned to face aspray hole 8. When thelid member 2 is closed onto thesupport member 3, a back face of thetransducer 46 comes in contact with anedge portion 52 formed by a front face and an upper face positioned on a front side of atip end portion 37 of the core 35 exposed from an openingwindow 38. - In the embodiment, a contact face between the transducer and the core is larger and efficiency of turning spray liquid into mist is increased as compared with First Embodiment described above and employing the circular cylindrical core.
- The shape of the core in the invention is not limited to those shown in the above-described respective embodiments. It is essential only that the shape of the core has the edge portion for coming in contact with the back face of the transducer on the front side of the tip end portion and facing the spray hole. The shape other than the front side of the tip end portion is not especially limited, if the core can soak up the spray liquid.
- The spray liquid in the invention may be fragrance, deodorant, germicide, or the like but is not limited to them. The spray liquid may be other agents which can be turned into mist by the ultrasonic vibration of the transducer.
- Although the center of gravity of the support arm is positioned on the back side of the axis of turning so that the force for turning backward acts on the support arm when the transducer fixed to the support arm is brought into contact with and pressed against the core in the method employed in First Embodiment described above, the method is not limited to it. For example, resilient bodies such as springs may be disposed at connecting portions between the support arm and the support plates to thereby always press the support arm backward.
-
- 1
- Liquid sprayer
- 2
- Lid member
- 3
- Support member
- 4
- Case main body
- 5
- Spray liquid storage unit
- 6
- Transducer unit
- 7
- Power supply unit
- 8
- Spray hole
- 9
- Front face
- 10
- Left side face
- 11
- Right side face
- 12
- Upper face
- 13
- Lower face
- 14
- Fitting shaft
- 15
- Support plate
- 16
- Connecting hole
- 17
- Circular hole
- 18
- Fan-shaped hole
- 19
- Lock hole
- 20
- Back face
- 21
- Left side face
- 22
- Right side face
- 23
- Upper face
- 24
- Fitting hole
- 25
- Box
- 26
- Support shelf
- 27
- Resilient plate
- 28
- Lock pin
- 29
- Storage tank
- 30
- Liquid soaking holder
- 32
- Step groove portion
- 31
- Opening portion
- 33
- Outer tube portion
- 34
- Inner tube portion
- 35
- Core
- 36
- Connecting bridge
- 37
- Tip end portion
- 38
- Opening window
- 39
- Seal body
- 40
- Hanging piece
- 41
- Back holding plate
- 42
- Support piece
- 43
- Front holding plate
- 44
- Support arm
- 45
- Lateral bar portion
- 46
- Transducer
- 47
- Protecting piece
- 48
- Vertical bar portion
- 49
- Connecting shaft
- 50
- Round shaft
- 51
- Restricting shaft
- 52
- Edge portion
Claims (6)
- A liquid sprayer (1) comprising a main body for supporting a spray liquid storage unit (5) and a transducer (46) inside itself, wherein the spray liquid storage unit includes a core (35) for soaking up spray liquid stored in a storage tank (29) to an outside of the storage tank, the transducer is in contact with a front side of a tip end portion (37) of the core protruding from the storage tank of the spray liquid storage unit with a front face of the transducer oriented forward and upward, and a spray hole (8) is formed in a position of the main body facing the front face of the transducer, characterized in that the liquid sprayer further comprises an inner tube portion (34) extending outside the storage tank and an opening window (38) is formed in the tip end side of the inner tube portion such that only a front side of a tip end portion (37) of the core (35) is exposed.
- The liquid sprayer according to claim 1, wherein a front face of the tip end portion of the core extends in a vertical direction and an inclination angle of the front face of the transducer with respect to the front face of the tip end portion of the core is 10° to 45°.
- The liquid sprayer according to claim 1 or 2, wherein the core has a round peripheral face.
- The liquid sprayer according to any one of claims 1 to 3, wherein the transducer is in contact with an edge portion of the front side of the tip end portion of the core.
- The liquid sprayer according to any one of claims 1 to 4, wherein the transducer is in contact with and pressed against the core.
- The liquid sprayer according to any one of the preceding claims, wherein the transducer is included in a transducer unit (6), said transducer unit including a support arm (44) having a recessed shape and a transducer (46) in a thin plate shape and fixed to protrude from a center of a lateral bar portion (45) of the support arm (44), and the lateral bar portion (45) is provided with paired protecting pieces (47) positioned parallel on opposite sides of the transducer 46.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013142429A JP5904415B2 (en) | 2013-07-08 | 2013-07-08 | Liquid spray device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2823893A1 EP2823893A1 (en) | 2015-01-14 |
EP2823893B1 true EP2823893B1 (en) | 2016-12-07 |
Family
ID=49918403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13197898.3A Active EP2823893B1 (en) | 2013-07-08 | 2013-12-17 | Liquid sprayer |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2823893B1 (en) |
JP (1) | JP5904415B2 (en) |
KR (1) | KR20150006342A (en) |
CN (1) | CN104275267B (en) |
MY (2) | MY168104A (en) |
TW (1) | TWI542411B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017213485A (en) * | 2016-05-30 | 2017-12-07 | シャープ株式会社 | Atomizing device |
CN115300659B (en) * | 2022-09-15 | 2023-05-26 | 深圳市本原生活科技有限公司 | Ultrasonic pure essential oil aromatherapy atomizer and control method |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3342095B2 (en) * | 1993-05-07 | 2002-11-05 | 株式会社ミクニ | Ultrasonic spray device |
JP3192530B2 (en) * | 1993-07-09 | 2001-07-30 | 株式会社ミクニ | Ultrasonic spray device spray guidance structure |
JPH0763379A (en) * | 1993-08-31 | 1995-03-07 | Mikuni Corp | Ultrasonic atomizer |
JPH0871470A (en) * | 1994-09-09 | 1996-03-19 | Koki Bussan Kk | Ultrasonic atomizer and its liquid feed structure |
US6752327B2 (en) * | 2002-10-16 | 2004-06-22 | S. C. Johnson & Son, Inc. | Atomizer with tilted orifice plate and replacement reservoir for same |
JP2007061815A (en) * | 2005-08-05 | 2007-03-15 | Nippon Mmi Technology Kk | Ultrasonic atomizer |
US20080041972A1 (en) * | 2006-08-02 | 2008-02-21 | Kai Chih Industrial Co., Ltd. | Spraying structure for an atomizer |
JP2010007899A (en) | 2008-06-25 | 2010-01-14 | Sanyo Electric Co Ltd | Atomizer |
US20110011948A1 (en) * | 2009-07-15 | 2011-01-20 | Charlie Huang | Assembling structure of water conduction device for mist maker |
CN201493212U (en) * | 2009-08-11 | 2010-06-02 | 江阴新仁科技有限公司 | Gas pressure type spraying device |
CN101670325B (en) * | 2009-09-30 | 2012-05-23 | 广东广益科技实业有限公司 | Liquid storing tank with fixed liquid discharge and atomizer with the liquid storing tank |
-
2013
- 2013-06-19 MY MYPI2013002296A patent/MY168104A/en unknown
- 2013-07-08 JP JP2013142429A patent/JP5904415B2/en active Active
- 2013-12-17 EP EP13197898.3A patent/EP2823893B1/en active Active
-
2014
- 2014-01-22 TW TW103102241A patent/TWI542411B/en not_active IP Right Cessation
- 2014-02-19 CN CN201410056070.9A patent/CN104275267B/en not_active Expired - Fee Related
- 2014-02-28 MY MYPI2014700485A patent/MY180883A/en unknown
- 2014-05-30 KR KR20140065877A patent/KR20150006342A/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
JP5904415B2 (en) | 2016-04-13 |
MY180883A (en) | 2020-12-11 |
EP2823893A1 (en) | 2015-01-14 |
TW201501808A (en) | 2015-01-16 |
MY168104A (en) | 2018-10-11 |
TWI542411B (en) | 2016-07-21 |
KR20150006342A (en) | 2015-01-16 |
CN104275267B (en) | 2017-03-01 |
JP2015013270A (en) | 2015-01-22 |
CN104275267A (en) | 2015-01-14 |
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