JP2009172483A - Electrostatic atomizing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrostatic atomizing device in which on/off of the imparting of electric field and the application of pressure to a container part (10) in the start and stop of liquid atomization is surely performed. <P>SOLUTION: The electrostatic atomizing device (1) is provided with the container part (10) for storing the liquid, a nozzle part (21) communicating with the inside of the container part (10), an electric field forming means (9) for generating electric field for atomizing the liquid in the container part (10) from the tip of the nozzle part (21) by applying a prescribed voltage and further provided with a fluid transporting means (8) for making the liquid flow out from the tip of the nozzle part (21) by increasing the inner pressure of the container part (10) by a pressurizing action. When the fluid transporting means (8) is under pressurizing action, voltage is impressed to the electric field forming means (9) and on the other hand, when the pressuring action to the fluid transporting means (8) is released, a linking means (7) for linking the fluid transporting means (8) and the electric field forming means (9) to each other to stop the impression of voltage to the electric forming means (9). <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to an electrostatic spraying device that atomizes and sprays a liquid by electrohydrodynamics.

  Conventionally, an electrostatic spraying device that atomizes and sprays a liquid by electrohydrodynamic (EHD: Electro Hydrodynamic) is known (see, for example, Patent Document 1). In this electrostatic spraying device, for example, an electric field is formed in the vicinity of the open end of the small-diameter tube, and the liquid in the small-diameter tube is atomized and sprayed using the inequality of the electric field.

The electrostatic spraying device of Patent Document 1 includes a housing including a pair of cases whose one ends are connected by a hinge. Each case is provided with a pad of an elastically deformable material. In this electrostatic spraying device, when the housing is closed, the pad contracts while sandwiching the container portion that stores the liquid. Then, by pulling the trigger provided in the apparatus, the piston is operated to push the pad, the container part is compressed by the pad, and the liquid in the container part is supplied to the nozzle part.
Japanese Patent Laid-Open No. 5-13881

  By the way, in the electrostatic spraying device of the above-mentioned patent document 1, an electric field for spraying the liquid is applied by the initial movement of the trigger, while the compression of the container portion by the pad is adjusted by the degree to which the trigger is gripped. The Therefore, when the liquid in the container portion is small, the liquid is sprayed by further applying pressure to the container portion after the electric field is applied first. Since the pressurization to the container part is stopped and the spraying of the liquid itself is stopped, there is a possibility that the applied state of the electric field continues.

  In addition, if the application of the electric field and the extrusion of the liquid are performed by separate operations, the spraying itself stops if one of the operations is stopped, but the liquid leakage continues or only the application of the electric field continues. Sometimes.

  Therefore, it is conceivable to set the application of the electric field and the extrusion of the liquid at the same time for control. However, one of the cases may not be stopped due to a malfunction, and the same problem remains.

  The present invention has been made in view of such a point, and an object of the present invention is to start spraying of liquid in an electrostatic spraying apparatus in which liquid is sprayed by application of an electric field and pressurization to a container part. In addition, the application of the electric field at the time of stopping and the on / off of pressurization to the container part can be ensured.

  In order to achieve the above object, an electrostatic spraying apparatus according to a first invention includes a container part (10) for storing a liquid, a nozzle part (21) communicating with the inside of the container part (10), a predetermined part An electric field forming means (9) for generating an electric field for spraying the liquid in the container part (10) from the tip of the nozzle part (21) by applying a voltage of A fluid conveying means (8) is provided for increasing the internal pressure of the container part (10) by a pressurizing operation and causing the liquid to flow out from the tip of the nozzle part (21). In some cases, the electric field forming means (9) is in a voltage application state, while when the fluid conveying means (8) is released from the pressurizing operation, the electric field forming means (9) is in a voltage application stop state. Linking means (7) for linking the operations of the fluid transfer means (8) and the electric field forming means (9) Eteiru.

  According to the above configuration, the operation of the fluid transfer means (8) and the electric field forming means (9) is linked by the linkage means (7), and the pressurization of the container part (10) is started by the fluid transfer means (8). For example, while the voltage is applied, the application of the electric field is stopped when the pressurizing operation is canceled.

  An electrostatic spraying device according to a second invention is the electrostatic spraying device according to the first invention, wherein at least one opening of the cylindrical housing (41a) and the housing (41a) is closed, and the housing ( 41a) and a cover portion (41b) connected to be rotatable relative to the circumferential direction, and the cover portion (41b) is rotated with respect to the housing (41a), whereby the fluid transfer means The pressurizing operation (8) and its release can be switched.

  According to the above configuration, the user moves the cover (41b) with the housing (41a) by holding the housing (41a) with one hand and holding the cover (41b) with the other hand. ), The pressurizing operation and release of the fluid conveying means (8) are switched, and the operations of the fluid conveying means (8) and the electric field forming means (9) are linked by the linkage means (7). Therefore, the operation of the fluid conveying means (8) and the electric field forming means (9) is simultaneously switched on and off by one operation of rotating the cover portion (41b) with respect to the housing (41a).

According to the first aspect of the invention, since the operation of the fluid conveying means (8) and the electric field forming means (9) are linked by the linkage means (7), the application of the electric field at the start and stop of the spraying of the liquid The container part (10) can be reliably turned on and off. According to the second aspect of the invention, the cover part (41b) is a relatively easy one to rotate the housing (41a). In operation, it is possible to simultaneously switch on and off the operation of the fluid conveying means (8) and the electric field forming means (9) without giving a burden to the user.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  As shown in FIGS. 1 to 3, the electrostatic spraying device (1) according to the embodiment of the present invention includes a columnar main body (41) and a half in side view covering substantially half of the main body (41). And a circular lid (42). The electrostatic spraying device (1) can adjust the height of the main body (41) in use in two stages.

  That is, the electrostatic spraying device (1) is provided with a fixing portion (43) having a flat lower end edge at the lower side of the side surface of the main body portion (41), and the lid portion (42) is connected to the main body portion (41). 2), the upper part of the lid part (42) is attached to the fixing part (43), as shown in FIG. It is possible to select a case in which the opening of the lid (42) is placed facing the table and the lid (42) is used as a pedestal.

  And as for the said electrostatic spraying apparatus (1), as shown in FIG. 4, the spray cartridge (20) is provided in the main-body part (41) so that attachment or detachment is possible.

  As shown in FIG. 5, the spray cartridge (20) is attached to and detached from a flat bag-like container (10), a conductive member (12) attached to the container (10), and a conductive member (12). A nozzle portion (21) that is freely attached and communicates with the inside of the container portion (10). In the spray cartridge (20), when the container part (10) is compressed, the liquid in the container part (10) is ejected from the tip of the nozzle part (21). The spray cartridge (20) is replaced when the liquid in the container (10) runs out or decreases.

The container part (10) is formed by superposing two rectangular sheets made of a relatively flexible material that does not allow liquid to permeate. These two sheets are bonded to each other on the four sides, and projecting toward the outside of the container part (10) on one side on the short side to connect the inside and the outside of the container part (10). A projecting portion (22) for communication is formed. The container (10) is filled with a cosmetic liquid (for example, a solution containing hyaluronic acid) containing a moisturizing component and an antioxidant component. The concentration of this liquid is adjusted so that the electric resistivity is 1.0 × 10 ⁴ Ωcm or more and 1.0 × 10 ⁷ Ωcm or less.

  The conductive member (12) is formed of a conductive resin, and constitutes an electric field forming means (9) for applying a charge to the liquid filled in the container part (10). The conductive member (12) is inserted into the protruding portion (22) of the container portion (10), and is inserted into the insertion portion (12a) that contacts the liquid in the container portion (10), and the outer end of the insertion portion (12a). And a flange portion (12b) having a larger diameter than the protruding portion (22). In the main body portion (41), a main body side electrode (not shown) connected to an electrode portion described later is provided, and the main body side electrode is in contact with the flange portion (12b).

  A through hole is formed in the insertion part (12a), and the nozzle part (21) is inserted into the through hole from the flange part (12b) side.

  The nozzle part (21) includes a thin tube-like nozzle part body (21a) and a nozzle fixing part (21b) through which the nozzle part body (21a) is inserted so as not to move. As shown in FIGS. 4 and 6, the nozzle fixing portion (21b) is fitted into the recess (12c) provided in the flange portion (12b), and the nozzle portion (21) is attached to the conductive member (12). It is like that. The nozzle body (21a) has an outer diameter of, for example, 0.35 mm, and an inner diameter of, for example, 0.1 mm. The nozzle body (21a) has a length of, for example, 7 mm, and its tip extends to the center of the container (10). The nozzle part main body (21a) is formed of a flexible resin material, is inserted through the through hole of the insertion part (12a), and communicates with the inside of the container part (10). In addition, the nozzle body (21a) has a resistor serving as a flow path resistance of the liquid toward the outside of the container section (10) in order to adjust the flow rate per unit time of the liquid flowing from the container section (10). May be provided.

  Further, as shown in FIG. 4, when the electrostatic spraying device (1) is not used in the nozzle portion (21), in order to prevent the liquid remaining in the nozzle portion main body (21a) from being dried. A nozzle cap (23) is detachably attached. The spray cartridge (20) is detachably disposed in the main body (41) such that the tip of the nozzle main body (21a) faces obliquely upward.

  As shown in FIGS. 2 and 3, the main body portion (41) includes a substantially cylindrical housing (41a) and a pair of cover portions (41b, 41c) covering both end openings of the housing (41a). Yes. The pair of cover portions (41b, 41c) is fixedly attached to the housing (41a) so as not to be rotatable, and the movable cover is rotatably attached to the housing (41a) in the circumferential direction. It is comprised with the side cover part (41b).

  As shown in FIG. 4, the housing (41a) is provided with an opening (11) for attaching the spray cartridge (20) at an oblique upper portion thereof, and the opening (11) is sprayed. The cartridge (20) is attached via the nozzle base (30). The nozzle base (30) is detachably attached to the opening (11), and a mounting recess in which the conductive member (12) of the spray cartridge (20) is accommodated in the center of the inner end of the housing (41a) (33) is formed. As shown in FIG. 6 in an enlarged manner, a nozzle recess (31) that is recessed toward the housing (41a) is provided at the center of the outer end of the nozzle base (30). A through hole (32) communicating with the mounting recess (33) is formed at the bottom of the nozzle recess (31), and the nozzle fixing portion (21b) of the nozzle portion (21) is formed in the through hole (32). Are to be accommodated. And the front-end | tip of a nozzle part main body (21a) is accommodated in a nozzle recessed part (31), and it is comprised so that a nozzle part main body (21a) may not protrude from a nozzle base (30).

  When replacing the spray cartridge (20), the nozzle base (30) is removed from the opening (11), and then the used spray cartridge (20) is taken out from the housing (41a). Then, after a new spray cartridge (20) is inserted into the housing (41a) from the opening (11), the nozzle base (30) is engaged with the opening (11).

  Under the opening (11) [nozzle base (30)] on the side surface of the housing (41a), light is directed toward the spray particles of the liquid ejected from the nozzle (21) as shown in FIG. An irradiation unit (40) for irradiation is provided. As shown in FIG. 2, the irradiating unit (40) includes two LED lights (46, 46), and the LED is directed upward in a state where the main body (41) is placed on a table or the like. It is comprised so that light may be irradiated. As described above, the LED light irradiated upwardly intersects the spray particles of the liquid ejected from the nozzle part (21). The irradiation of the LED light by the irradiation unit (40) is performed at least when adjusting the spray state of the liquid.

  In the position corresponding to both sides of the container part (10) of the spray cartridge (20) in the housing (41a), a spring arrangement part (50, 50) is provided.

  In the main body (41), a fluid conveying means (8) for pressurizing the container part (10) of the spray cartridge (20) to eject the liquid in the container part (10), and an electric field forming means ( 9) are arranged.

  The electric field forming means (9) includes a power supply section (34), and the power supply section (34) has a variable resistance volume (48) for adjusting the voltage. The power supply unit (34) is configured to convert the output voltage from the battery housed in the housing (41a) into a high voltage of, for example, 6 kV using the volume (48) and output the voltage to the main body side electrode. . The voltage output to the main body side electrode is applied to the liquid in the nozzle part (21) via the conductive member (12) of the spray cartridge (20).

  The power supply unit (34) has a voltage switch (47) (shown in FIG. 9) for switching between a voltage application state and an application stop state of the electric field forming means (9) by turning on and off the high voltage output. Is provided.

  On the other hand, as shown in FIGS. 2 and 3, on the outer surface of the pair of cover portions (41b, 41c), the counter electrodes (44, 44) of the conductive member (12) (liquid to which voltage is applied) are strip-shaped. Is formed. The counter electrode (44), the power source (34), the main body side electrode and the conductive member (12) constitute an electric field forming means (9).

  Further, as shown in FIG. 3, a voltage adjustment knob (45) as an adjustment means connected to the volume (48) is attached to the fixed side cover portion (41c). By operating this voltage adjustment knob (45), the resistance value of the volume (48) is changed, and the voltage of the high-voltage power supply output from the power supply section (34) to the conductive member (12) is adjusted. Thus, the liquid spray state can be optimized.

  As shown in FIGS. 7 and 9, the fluid conveying means (8) includes the movable side cover portion (41b), two constant load springs (51, 51), a pressure stage (52), a partition, And a plate (53). The fluid conveying means (8) increases the internal pressure of the container part (10) by a pressurizing operation and causes the liquid to flow out from the tip of the nozzle part (21).

  As shown in FIG. 8, the pressurizing stage (52) is formed in a bottomed cylindrical shape, and a pair of spring mounting portions (54, 52) to which two constant load springs (51, 51) are mounted on the outer surface thereof. 54) is formed. In addition, a pair of engagement pins (55, 55) project from the inner surface of the pressure stage (52).

  The constant load spring (51, 51) is a spring in which a strip-shaped metal plate formed with a constant curvature is wound in a spiral shape. The constant load spring (51, 51) has a characteristic that when the stroke exceeds a predetermined value, the restoring force becomes constant even if the stroke is further increased. The constant load spring (51, 51) is wound around the spring drum (51a), and the spring drum (51a) is rotatably supported by the spring mounting portion (54, 54) of the pressure stage (52). . Further, the outer end of the metal plate of the constant load spring (51, 51) is connected to the spring arrangement portion (50, 50) of the housing (41a).

  The pressurization stage (52) is disposed such that the bottom thereof faces the fixed side cover part (41c), and in order from the movable side cover part (41b) to the fixed side cover part (41c), the pressurization stage (52), the container part (10) of the spray cartridge (20), and the partition plate (53) are disposed in the housing (41a).

  As shown in FIG. 8, the movable-side cover part (41b) has a substantially cylindrical winding part (60) projecting from the inner surface (pressure stage (52) side). A pair of notches (51, 51) is formed in the upper part (60). These notches (51, 51) open to the front end side of the winding part (60), and the release parts (61a) into which the engagement pins (55, 55) of the pressure stage (52) are respectively inserted. An inclination that guides the engaging pin (55, 55) obliquely in the left direction when viewed from the inner side of the movable side cover part (41b) from the release part (61a) toward the base end side of the winding part (60) Part (61b) and an engaging part (61c) that is provided on the base end side of the winding part (60) continuously to the inclined part (61b) and engages with the engaging pins (55, 55). is doing.

  When the pair of engaging pins (55, 55) are engaged with the engaging portion (61c) of the winding part (60), the pressure stage (52) is moved from the constant load spring (51, 51) to the container. In a state where the spring force is applied in the direction toward the portion (10), the bottom portion is regulated to a position where the container portion (10) of the spray cartridge (20) is not pressed.

  And the movable side cover part (41b) is in the right direction with respect to the housing (41a) (the direction in which the engagement pins (55, 55) of the pressure stage (52) are directed to the inclined part (61b) of the winding part (60). ), The engagement pin (55, 55) is moved to the inclined portion (61b), so that the engagement pin (55, 55) and the engagement portion (61c) are disengaged. The pressure stage (52) is moved to the container part (10) side by the spring force of the constant load spring (51, 51), and the container part (10) is connected to the pressure stage (52) and the partition plate (53). It is sandwiched between and pressed.

  Further, as shown in FIG. 9, the pressure stage (52) is provided with a pusher (49) for turning on and off the voltage switch (47). When the movable cover (41b) is rotated relative to the housing (41a), the pusher (49) is configured so that the engagement pins (55, 55) of the pressure stage (52) are wound up ( 60) in the inclined part (61b), the voltage switch (47) is turned on by interfering with the voltage switch (47), while the engaging pin (55, 55) ) In the engaging portion (61c), the voltage switch (47) is separated from the voltage switch (47) to turn it off.

  That is, when the fluid conveying means (8) is in a pressurizing operation, the electric field forming means (9) is set to a voltage application state, while when the fluid conveying means (8) is released from the pressurizing operation, The operations of the fluid transfer means (8) and the electric field forming means (9) are linked so that the electric field forming means (9) is in a voltage application stop state. By rotating the movable-side cover part (41b) with respect to the housing (41a), the pressurization stage (52) advances and retreats with respect to the container part (10), and the fluid conveying means (8) and the electric field forming means (9 ) Is simultaneously turned on and off, so that the upper part (60) of the movable cover (41b) and the pressurization stage (52) link the actions of the fluid transfer means (8) and the electric field forming means (9). The linking means (7) is configured.

  Specifically, the movable side cover part (41b) is rotated rightward with respect to the housing (41a), and the engagement pins (55, 55) are moved from the engagement part (61c) to the inclined part (61b). Then, the pressure stage (52) moves to the container part (10) side, the pressure stage (52) pressurizes the container part (10), and the liquid is supplied to the tip of the nozzle part (21). The pusher (49) turns on the voltage switch (47), and a high voltage is output from the power supply unit (34) to generate an electric field, so that the liquid is sprayed.

  On the other hand, when the movable cover portion (41b) is rotated leftward with respect to the housing (41a), the engagement pins (55, 55) are moved from the inclined portion (61b) to the engagement portion (61c). The pressurization stage (52) moves away from the container part (10), the pressurization to the container part (10) of the pressurization stage (52) is released, and the pusher (49) is used for voltage. The switch (47) is turned off to stop the output of voltage from the power supply unit (34), thereby stopping the spraying of liquid.

(Driving operation)
Next, the operation of the electrostatic spray device (1) of this embodiment will be described. In this electrostatic spraying device (1), so-called cone jet mode EHD spraying is performed.

  When the electrostatic spraying device (1) is not in operation, the engagement pins (55, 55) of the pressure stage (52) are engaged with the engagement portion (61c) of the winding part (60). The pressure stage (52) does not pressurize the container part (10) of the spray cartridge (20). In this state, a load is applied to the pressure stage (52) in a direction from the constant load spring (51, 51) toward the container portion (10).

  When operating the electrostatic spraying device (1), first, the lid (42) is removed from the main body (41). Place the fixed part (43) of the main unit (41) directly on the table or attach the lid (42) to the fixed part (43) according to the place where the electrostatic spraying device (1) is placed. Then adjust the height by placing the lid (42) on the tabletop.

  Then, when the user rotates the movable cover (41b) relative to the right side with respect to the housing (41a), the fluid conveying means (8) and the electric field forming means (9) are moved by the linkage means (7). At the same time, the spraying of the liquid is started. When the user performs the operation of holding the housing (41a) with one hand and twisting the cover (41b) with the other hand, the movable side cover (41b) rotates.

  Specifically, as shown in FIG. 11, when the movable-side cover part (41b) is rotated, the fluid conveying means (8) has the engagement pins (55, 55) and the engagement part (61c). And the load generated by the constant load spring (51, 51) acts and the pressure stage (52) is moved to the container (10) side, so that the container (10) is added. It is sandwiched between the pressure stage (52) and the partition plate (53), pressurized and compressed, and the liquid in the container part (10) is sent to the tip of the nozzle part (21). Since the inner diameter of the nozzle part (21) is small and the flow path resistance of the nozzle part (21) is large, the liquid in the container part (10) is gradually supplied to the tip of the nozzle part (21). As the liquid in the container part (10) decreases, the pressure stage (52) is pushed by the load from the constant load spring (51), and the engagement pins (55, 55) are inclined (61b). The pressure stage (52) moves to the container part (10) side. Since the load generated by the constant load spring (51, 51) is constant regardless of the stroke, the pressure of the liquid in the nozzle part (21) is always constant and is supplied from the tip of the nozzle part (21). The amount of liquid is always constant.

  On the other hand, in the electric field forming means (9), the pusher (49) is used for voltage by rotating the movable cover (41b) and moving the pressure stage (52) toward the container (10). The voltage switch (47) is turned on by interfering with the switch (47). When the voltage switch (47) is turned on, a high voltage is output from the power supply unit (34), and the liquid in the nozzle unit (21) passes through the main body side electrode and the conductive member (12) of the spray cartridge (20). A voltage is applied to and an electric field is generated.

  When an electric field is formed at the tip of the nozzle part (21), the liquid supplied to the tip of the nozzle part (21) is polarized, and a + (plus) charge is generated near the gas-liquid interface at the tip of the nozzle part (21). Gather. Then, at the tip of the nozzle part (21), the gas-liquid interface is extended into a conical shape, and a part of the aqueous solution is torn off from the top of the conical gas-liquid interface to form droplets.

  The size of the droplets scattered from the tip of the nozzle body is set to the magnitude of the applied voltage corresponding to the electrical resistivity of the liquid so that the size is approximately in the range of 50 μm to 200 μm. In the electrostatic spraying device (1) of the present embodiment, the optimal spraying state is a state where the liquid is sprayed in a ligament state in which a thread is pulled and then diffused. The liquid splashed from the nozzle body (21a) reaches a distance of about 40 cm to 50 cm from the tip of the nozzle body (21a).

  However, the spray state of the liquid changes depending on the humidity in the room where the electrostatic spraying device (1) is installed, the distance from the object, the presence or absence of an obstacle, and the like.

  In the electrostatic spraying device (1) of the present embodiment, the user operates the voltage adjustment knob (45) provided on the fixed side cover portion (41c) of the main body portion (41), so that the electric field forming means ( In 9), the voltage applied to the liquid can be adjusted to optimize the spray state of the liquid.

  That is, when the user operates the voltage adjustment knob (45), the resistance value of the volume (48) is changed, and the voltage of the high-voltage power supply output from the power supply section (34) to the conductive member (12) is adjusted. Then, the spray state of the liquid is adjusted.

  Specifically, when the electrostatic spraying device (1) is close to the user or the relative humidity of the space is high, the liquid is not sprayed in the ligament state, and the tip of the nozzle body (21a) is It diffuses immediately after it comes out or is sprayed in a broken state. In this case, the user can operate the voltage adjustment knob (45) to reduce the voltage, thereby achieving an optimal spray state.

  On the other hand, when the electrostatic spraying device (1) is far away from the user or the relative humidity of the space is low, the degree of liquid diffusion becomes weak or the spray particles become large. In this case, the user can operate the voltage adjustment knob (45) to increase the voltage, thereby achieving an optimum spray state.

  When adjusting the spray state of the liquid as described above, the LED light is irradiated from the LED lights (46, 46) of the irradiation unit (40) toward the spray particles of the liquid to be sprayed. When irradiating light toward the sprayed particles of the liquid in the irradiation unit (40), the light directly hits the particles, and the light hitting the particles becomes repulsive light or scattered light, hitting the particles one after another, and the whole light Is sprayed and the sprayed particles become visible.

  Accordingly, the irradiation unit (40) irradiates LED light toward the liquid spray particles, and the user adjusts the liquid spray state with the voltage adjustment knob (45) while visually observing the liquid spray state.

  Since the light irradiated from the irradiation unit (40) is irradiated in a direction intersecting with the spray direction of the liquid spray particles, the light surely hits the spray particles and the light is irradiated upward. Therefore, even if the user tries to attach the liquid droplet ejected from the nozzle to the face, the light is not irradiated toward the user, and the light does not hit the eyes and feel dazzling.

  When stopping the spraying of the liquid of the electrostatic spraying device (1), the user rotates the movable cover (41b) relative to the left side with respect to the housing (41a). ), The fluid conveying means (8) and the electric field forming means (9) stop operating simultaneously, and the spraying of the liquid ends.

  Specifically, when the movable-side cover part (41b) is rotated, the engagement pins (55, 55) of the pressure stage (52) of the fluid conveying means (8) are It moves from the inclined part (61b) to the engaging part (61c) and engages with the engaging part (61c). The constant load spring (51, 51) is wound up by the winding upper part (60), and the pressure stage (52) is moved away from the container part (10), whereby the pressure stage (52) is moved to the container part. Separated from (10), the pressurizing operation to the container part (10) is stopped. Then, as shown in FIG. 11, the internal pressure in the container part (10) gradually decreases, and the liquid in the container part (10) is not supplied to the tip of the nozzle part (21).

  On the other hand, in the electric field forming means (9), the pusher (49) is moved by rotating the movable cover (41b) and moving the pressure stage (52) away from the container (10). And the voltage switch (47) are released, and the voltage switch (47) is turned off. When the voltage switch (47) is turned off, the output of the high voltage from the power supply unit (34) is stopped, and the application of the voltage to the liquid in the nozzle unit (21) is stopped.

  Thus, in one operation of the user to rotate the movable side cover portion (41b) with respect to the housing (41a), the fluid conveying means (8) and the electric field forming means (9) are operated by the linkage means (7). Is turned on and off mechanically.

(Effect of embodiment)
Therefore, in the electrostatic spraying device (1) of the present embodiment, the start and stop of liquid spraying are controlled by one relatively easy operation of twisting the cover (41b) with respect to the housing (41a). Therefore, the operation of the fluid conveying means (8) and the electric field forming means (9) can be switched on and off at the same time without causing the user to feel a burden.

  Since the operation of the fluid conveying means (8) and the electric field forming means (9) is switched on and off mechanically by one operation of rotating the cover portion (41b) with respect to the housing (41a). In addition, the start and stop of the liquid spray can be controlled more reliably.

  Moreover, since the irradiation part (40) which irradiates light toward the spray particle | grains of a liquid is provided, the light hits the particle | grains and the spray particle | grains can be visually observed and the spray state of a liquid can be confirmed easily now.

  Moreover, since the light irradiated from the irradiation part (40) is irradiated in the direction intersecting with the spraying direction of the liquid spray particles, the light reliably hits the spray particles and can be easily observed. .

  Moreover, since the light irradiated from the irradiation part (40) was irradiated upwards, light is not irradiated toward a user, but a user's comfort can be improved.

  Furthermore, when adjusting the spray state of the liquid by adjusting the voltage applied to the liquid with the voltage adjustment knob (45), the irradiation unit (40) performs irradiation while visually confirming the spray state of the liquid. Since the spray state can be adjusted, stable liquid spray can be performed more easily and reliably.

  Even if the usage environment of the electrostatic spraying device (1) changes, the user can adjust the spray state of the liquid to an optimum state by operating the voltage adjusting knob (45).

  That is, the voltage spray knob (45) is used to adjust the spray state of the liquid by increasing or decreasing the voltage applied by the electric field forming means (9). Even so, it is possible to adjust to an optimum liquid spray state, and to perform stable liquid spray.

  Further, since the voltage adjustment knob (45) is operated by the user and the adjustment of the spray state of the liquid is opened to the user, a user-friendly device can be provided.

  In addition, the above-mentioned embodiment is an illustration of this invention, Comprising: This invention is not limited to this example.

  As described above, the present invention is useful for an electrostatic spraying device that atomizes and sprays a liquid by electrohydrodynamics.

It is a perspective view which shows the electrostatic spraying apparatus which concerns on embodiment of this invention. It is the perspective view which looked at the electrostatic spraying device from the movable side cover part side. It is the perspective view which looked at the electrostatic spraying device from the fixed side cover part side. It is a schematic longitudinal cross-sectional view of a main-body part. It is an exploded view showing a spray cartridge. It is a partially expanded sectional view of FIG. It is a schematic longitudinal cross-sectional view which shows the state at the time of spraying of an electrostatic spraying apparatus. It is a perspective view which shows a movable side cover part and a pressurization stage. It is a schematic block diagram which shows a fluid conveyance means and an electric field formation means. It is a circuit diagram which shows an electric field formation means. It is a time chart which shows the relationship between a container part internal pressure and applied voltage, and time.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electrostatic spray apparatus 7 Linking means 8 Electric field formation means 9 Fluid conveyance means 10 Container part 21 Nozzle part 41a Housing 41b Movable side cover part (cover part)

Claims (2)

A container part (10) for storing a liquid, a nozzle part (21) communicating with the inside of the container part (10), and a predetermined voltage is applied to cause the liquid in the container part (10) to flow into the nozzle part (21 And an electric field forming means (9) for generating an electric field for spraying from the tip of the electrostatic spraying device,
Fluid supply means (8) for increasing the internal pressure of the container part (10) by a pressurizing operation and allowing the liquid to flow out from the tip of the nozzle part (21);
When the fluid conveying means (8) is in a pressurizing operation, the electric field forming means (9) is in a voltage application state, while when the fluid conveying means (8) is released from the pressurizing operation, An electrostatic system comprising a fluid conveying means (8) and a linking means (7) for linking the operation of the electric field forming means (9) so as to put the electric field forming means (9) in a voltage application stop state. Spraying equipment. The electrostatic spray device of claim 1.
A cylindrical housing (41a);
A cover portion (41b) that closes at least one opening of the housing (41a) and is connected to the housing (41a) so as to be relatively rotatable in the circumferential direction;
An electrostatic system characterized in that the pressurizing operation and release of the fluid conveying means (8) can be switched by rotating the cover portion (41b) with respect to the housing (41a). Spraying equipment.

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