JP2013245578A - Air blowing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure enabling operation of a power switch without awareness of presence of the power switch, in a small air blowing device suitable for use on a table.SOLUTION: An air blowing device 1 includes: a case 2 on which a suction port 2a and an outlet port 2b are formed; and an air blowing fan 30 disposed inside the housing 2 for forming an air flow sucked from the intake port 2a into the case 2 and blown out from the outlet port 2b to the outside of the case 2. A wind-directing plate 10 capable of displacing between a position where the outlet port 2b opens and a position where the outlet port 2b is closed is disposed in the outlet port 2b. A power switch 18 of the air blowing fan 30 is turned ON when the wind-directing plate 10 comes to the position where the outlet port 2b opens and turns OFF when the wind-directing plate 10 comes to the position where the outlet port 2b is closed.

Description

  The present invention relates to an air blower suitable for use on a tabletop.

  Household electrical equipment includes various air blowers such as a fan, a ventilation fan, an air purifier, and an air conditioner. Some electric fans and air purifiers are small and are intended to be used on a table.

  Patent Document 1 describes an air purifier that is an example of a blower. This air purifier has an operation panel on the top front of the casing, on which a number of operation buttons including a power on / off button are arranged.

JP 2012-57887 A

  A small air blower used on a table has a limited space for arranging operation buttons. In addition, only the ones that start and end are required to have a clean design with a small number of operation buttons.

  The present invention has been made in view of the above points, and provides a structure capable of operating a power switch without being aware of the presence of the power switch in a small air blower suitable for use on a desktop. Objective.

  The blower according to the present invention includes a housing in which a suction port and an air outlet are formed, and an air flow that is sucked into the housing from the suction port and blown out of the housing from the air outlet. A blower fan disposed at the air outlet, a wind direction plate disposed at the air outlet and displaceable between a position where the air outlet is opened and a position where the air outlet is closed, and the air direction plate comes to a position where the air outlet is opened. And a power switch of the blower fan that is turned on when the airflow direction plate comes to a position for closing the air outlet.

  In the air blower configured as described above, the air outlet is opened when the wind direction plate is displaced so as to jump out of the housing, and the air outlet is closed when the air direction plate is displaced so as to be pushed into the housing. Is preferred.

  In the blower configured as described above, it is preferable that the wind direction plate is attached to a slide body that is slidable with respect to the housing, and the power switch is turned on / off in conjunction with the slide of the slide body.

  In the air blower configured as described above, an urging means for urging the slide body toward the outside of the housing, and a push-on / push-off method for retaining the slide body against the urging force of the urging means. Preferably locking means are provided.

  In the air blower configured as described above, it is preferable that the urging force of the urging unit is set so that the power switch is turned off when the air blower is installed with the air outlet facing downward.

  In the air blower configured as described above, the air outlet is preferably formed on an upper surface of the housing.

  In the blower configured as described above, it is preferable that the air outlet has a circular shape and the wind direction plate has an umbrella shape.

  In the blower device of the present invention, a wind direction plate is arranged at the air outlet on one side of the housing, and the power switch of the blower fan is switched on or off according to the movement of the wind direction plate opening or closing the air outlet. Therefore, it is not necessary to provide an operation button or an operation lever of the power switch on the outer surface of the housing, and the design of the blower can be made clean. Also, if you look at the position of the wind direction plate, you can know at a glance the switching state of the power switch even from a distance.

It is a perspective view of the air blower concerning the embodiment of the present invention, and shows the state where the wind direction board makes the blower outlet large opening. It is a vertical sectional view of the air blower of FIG. FIG. 3 is a vertical sectional view in which the blower of FIG. 1 is cut in a direction perpendicular to FIG. 2. FIG. 4 is a vertical cross-sectional view in which the blower of FIG. 1 is cross-sectioned with the viewpoint perpendicular to FIG. 2 and opposite to FIG. 3. It is a perspective view of the air blower concerning the embodiment of the present invention, and shows the state where the wind direction board makes the opening small. FIG. 6 is a vertical sectional view of the blower of FIG. 5 taken along a direction perpendicular to FIG. 5. It is a top view of the air blower which concerns on embodiment of this invention. It is a figure of the state which removed the wind direction board from FIG. It is a side view of the air blower concerning an embodiment of the present invention. It is a rear view of the air blower which concerns on embodiment of this invention. It is a bottom view of the air blower concerning an embodiment of the present invention. It is a figure of the state which removed the power cord from FIG. FIG. 7 is a vertical sectional view similar to FIG. 6, showing a state where the bottom plate of the housing is removed. It is a perspective view of an ion generating element. It is a vertical sectional view showing the state where the air blower according to the embodiment of the present invention falls and is inverted.

  Hereinafter, the structure of the blower according to the embodiment of the present invention will be described with reference to the drawings. The blower 1 includes a cubic synthetic resin casing 2. The right hand side of the user facing the front of the housing 2 is defined as the right side surface of the housing 2, and the left hand side is defined as the left side surface of the housing 2. FIG. 9 is a right side view of the blower 1.

  The housing 2 has a cubic shape as described above, and includes six side surfaces (this “side surface” includes the top surface and the bottom surface). A suction port is formed on one of the six side surfaces, and a blow-out port is formed on one side surface other than the side surface where the suction port is formed. In the present embodiment, a suction port 2 a (see FIG. 3) is formed on the left side surface of the housing 2, and an air outlet 2 b is formed on the upper surface of the housing 2. The suction port 2a is composed of a set of a plurality of through holes. The blower outlet 2b has a circular front shape (here, a shape when viewed from above). Moreover, the blower outlet 2b becomes a shape which squeezes down in the shape of a mortar.

  Although formation of the blower outlet 2b is limited only to one side surface of the housing | casing 2, there is no such limitation regarding the suction inlet 2a. It is good also as forming the suction inlet 2a in the some side surface of the housing | casing 2. FIG.

  The casing 2 is molded as a single part with four sides and an upper surface, and only the bottom surface is constituted by a separate bottom plate 3. The bottom plate 3 is detachable, and rubber legs 4 for stably supporting the housing 2 on the table are provided at the four corners.

  As shown in FIG. 12, a through hole 3a is formed in the bottom plate 3, and a terminal 35 is disposed in the back of the through hole 3a. When the plug 6 at one end of the power cord 5 is connected to the terminal 35 as shown in FIG. 11, power can be supplied to the blower device 1 through the power cord 5. The power cord 5 may be connected to a household 100V power source or may be connected to a USB terminal of a personal computer or the like.

  As shown in FIGS. 1 and 9, two operation buttons are arranged on the right side surface of the housing 2 so as to be lined up and down. The upper one is an air volume switching button 50 for switching the air volume of a blower fan to be described later. Each time the air volume switching button 50 is pressed, the air volume is switched from weak to medium to strong. An air volume indicator 51 is arranged on the air volume switching button 50. The air volume indicator 51 indicates the air volume by the number of vertically long LED lamps. A display with only one LED lamp indicates “low”, and a display with two LED lamps indicates “medium”. A display in which three LED lamps are arranged represents the air volume “strong”.

  An operation button below the air volume switching button 50 is a reset button 52. The reset button 52 is pressed after cleaning (cleaning) of a filter and an ion generating element, which will be described later, and indicates the accumulated time from the previous cleaning stored in the control unit (not shown) of the blower 1. It works to reset to zero. On the reset button 52, an indicator 53 for notifying that the filter maintenance time has come is arranged. Under the reset button 52, an indicator 54 for notifying that the time for maintenance of the ion generating element has come. The indicators 53 and 54 are both constituted by LED lamps.

  As shown in FIG. 10, a latching hole 2 c having a so-called Dharma hole shape is formed on the back surface of the housing 2. If the retaining hole 2c is hooked on a hook (not shown) protruding from the wall surface of the room, the blower device 1 can be held and used in a wall-hanging state.

  As shown in FIGS. 2 and 3, a blower fan 30 is disposed inside the housing 2. The blower fan 30 includes a casing 30a, a sirocco fan 30e disposed therein, and a motor 30f that rotates the sirocco fan 30e about a horizontal axis. The sirocco fan 30e is of a double-sided suction type, and the casing 30a is formed with an intake port 30b facing one suction surface of the sirocco fan 30e and an intake port 30c facing the other suction surface of the sirocco fan 30e. Yes. The intake port 30b is on the side facing the intake port 2a, and the intake port 30c is on the opposite side.

  The suction duct 20 and the duct member 32 are arranged so as to sandwich the blower fan 30 from the left and right. The suction duct 20 and the duct member 32 are connected to each other in such a manner that a hook 32e formed at the lower end of the duct member 32 is engaged with a hook receiver 20a formed at the lower end of the suction duct 20. The upper ends of the suction duct 20 and the duct member 32 are engaged with the hook and the hook receiver in the same manner as the lower end, and then the connecting member 36 is placed on the upper end of the suction duct 20 and the duct member 32 through the connecting member 36. The screw 37 is connected by screwing. The blower fan 30 is fixed to the duct member 32 with screws not shown.

  The suction duct 20 extends in such a manner as to connect the intake port 30 b of the blower fan 30 and the intake port 2 a of the housing 2. A filter 23 detachable from the bottom surface of the housing 2 is disposed between the inlet of the suction duct 20 and the suction port 2a.

  The duct member 32 has a vertical wall portion 32a facing the air inlet 30c of the blower fan 30, and an opening portion 32b is formed there. In the opening 32 b, a gap between the duct member 32 and the inner surface of the housing 2, mainly the lower surface of the duct member 32 and the bottom plate 3, from a notch 20 a (see FIG. 4) formed at the inlet of the suction duct 20. Air flows through the gap between the top surfaces. A chamfered portion 32c formed at a corner at the lower back of the duct member 32 also serves as an air passage.

  When the blower fan 30 is driven, air is sucked into the housing 2 from the suction port 2a. The sucked air passes through the filter 23, and dust contained in the air is collected by the filter 23. The air that has passed through the filter 23 passes through the suction duct 20 as shown by an arrow A1 in FIG. Part of the air that has entered the suction duct 20 exits from the notch 20a to the outside of the suction duct 20, passes through the gap between the lower surface of the duct member 32 and the bottom plate 3 as shown by the arrow A2 in FIG. From there, it enters the inside of the duct member 32, passes through the opening 32 b, and is sucked into the air inlet 30 c of the blower fan 30.

  In this manner, since a plurality of suction paths are prepared for the blower fan 30, the blower efficiency can be improved. A circuit board 34 on which electronic components such as terminals 35 are mounted is arranged inside the duct member 32 with its plane being vertical, and the circuit board 34 is located in the airflow toward the opening 32b. Electronic components that generate heat can be cooled. If the opening 32b is arranged at a position closer to the upper side of the duct member 32, the air flowing into the duct member 32 from the lower side moves a long distance along the circuit board 34, and the cooling effect is improved.

  The casing 30a of the blower fan 30 is provided with an exhaust port 30d (see FIG. 2) that opens toward the front of the housing 2. The air discharged from between the fan blades of the sirocco fan 30e swirls clockwise in FIG. 2 in the casing 30a, and is blown out substantially horizontally from the exhaust port 30d. The air flow blowing direction from the exhaust port 30d may be a diagonally upward direction with a slight elevation angle, or a diagonally downward direction with a slight depression angle. The air blown out from the exhaust port 30d is blown out from the blowout port 2b via a blower passage formed inside the housing 2. The blowout duct 21 constitutes the air passage.

  The blowout duct 21 receives the air blown from the exhaust port 30d from the inlet at the lower end, changes the direction of the air flow from the substantially horizontal direction to the vertical direction at the bent portion following the inlet, and blows the air upward from the outlet at the upper end. . The straight line portion that follows the bent portion in the blowout duct 21 does not necessarily extend in the vertical direction. It may be extended obliquely with a slight angle (for example, an angle within 10 °).

  The bent portion of the blowout duct 21 becomes a static pressure conversion region 21a in which the dynamic pressure of the airflow blown from the exhaust port 30d is converted into a static pressure. By converting the dynamic pressure of the blown airflow into a static pressure, an effect that a part of the airflow expands to the full width of the blowout duct 21 is produced.

  The ion generating element 40 is disposed immediately after the static pressure conversion region 21a. The ion generating element 40 is for discharging ions into the airflow blown out of the housing 2 from the blower outlet 2b. The ion generating element 40 is held by a holding member 45 that constitutes a part of the blowing duct 21.

  The holding member 45 is formed with a bent portion 45 a that is the outer peripheral side of the bent portion of the blowing duct 21. The bent portion 45a is a curved surface that gently transitions from the blowing direction of the blower fan 30 to the direction of the blowout port 2b. By setting it as such a shape, in the part close | similar to the connection part with the blowing duct 21, blowing airflow hits from the front, and dynamic pressure is converted into a static pressure. In addition, at the portion where the bent portion 45a and the exhaust port 30d are connected, the blown airflow is smoothly redirected by the curved surface and guided upward. As a result, both airflows merge and are supplied to the ion generating element 40 while maintaining the airflow velocity while spreading in the lateral width direction of the blowout duct 21.

  In the present embodiment, the bent portion 45a is a curved surface that gently changes from the blowing direction of the blower fan 30 to the outlet 2b, but the bent portion 45a is formed to be bent substantially at a right angle like an elbow pipe. May be.

  As shown in FIG. 14, the ion generating element 40 has a thin flat box-like casing in the front-rear direction, and faces the blower fan 30 on the front surface of the casing (the rear face in the direction of the entire blower 1). A pair of left and right needle-like discharge electrodes 41 serving as an ion generating portion project from the side surface) toward the blower fan 30. The discharge electrode 41 generates ions by corona discharge. The discharge electrode 41 is directly above the bent portion 45a, more precisely, immediately after the connecting portion between the bent portion 45a and the straight portion of the outlet duct 21 that connects the bent portion 45a to the outlet 2b, that is, immediately after the static pressure conversion region 21a. Although it is supposed to be located, it may be located in the middle of the bent portion 45a, that is, in the static pressure conversion region 21a.

  One of the pair of discharge electrodes 41 is a positive ion generating part and the other is a negative ion generating part, and is arranged at a predetermined distance in the horizontal direction. The interval between the pair of discharge electrodes 41 is wider than the width of the exhaust port 30 d of the blower fan 30. In other words, each of the pair of discharge electrodes 41 is disposed outside the air flow blowing width of the blower fan 30.

  In order to enable the arrangement of the discharge electrode 41 as described above, the holding member 45 is connected to the exhaust port 30d of the blower fan 30 from the opening 45b having substantially the same width as the exhaust port 30d (the entire blower 1). In this direction, the front portion is a symmetrically extending portion 45c. The discharge electrode 41 is positioned in the lateral width of the overhanging portion 45c. The blowout duct 21 extends to the outlet at the upper end with the same lateral width as the overhanging portion 45c on the downstream side of the overhanging portion 45c.

  At the center of the bent portion 45a, an airflow branching portion 45d that distributes the airflow from the blower fan 30 to both the discharge electrodes 41 is formed. The airflow branching portion 45 d is composed of a vertical wall protruding in the direction of the blower fan 30.

  The ion generating element 40 is held by inserting the casing into the holding member 45 from above. A connection terminal 40 a connected to the terminal portion 42 inside the housing 2 is formed on the upper surface of the housing of the ion generating element 40.

  An electrode protection plate 40b for preventing the discharge electrode 41 from coming into contact with another object is attached to the front surface of the housing. For this reason, there is no need to worry that the discharge electrode 41 hits another object and deforms. A circular through hole 40 c is formed in the electrode protection plate 40 b at a location corresponding to the front surface of the discharge electrode 41. At least a part of the air passing through the static pressure conversion region 21a flows between the housing of the ion generating element 40 and the electrode protection plate 40b. Another part of the air passing through the static pressure conversion region 21a passes through the through hole 40 and is blown to the discharge electrode 41. The shape of the through hole 40 is circular in this embodiment, but may be other shapes.

  A light guide plate 25 is disposed above the blowout duct 21 so as to partition the inside of the housing 2 horizontally. The upper surface of the light guide plate 25 is applied to the lower edge of the air outlet 2b. A communication port 25b is formed in the light guide plate 25 on the side close to the front surface of the housing 2, and an outlet at the upper end of the outlet duct 21 is connected to the communication port 25b. A guide plate 25c that guides the airflow rising inside the blowout duct 21 forward is formed in the communication port 25b so as to protrude into the blowout duct 21.

  The light guide plate 25 is made of a transparent material such as acrylic resin, and the rear end serves as the incident surface 25a. A light emitting diode (LED) 26 serving as a light source is arranged in a shape facing the incident surface 25a. A reflection sheet (not shown) is overlaid on the lower surface of the light guide plate 25.

  A through hole 25 d is formed at the center of the light guide plate 25. This location is the center of the air outlet 2b and also the center of the housing 2. The shaft portion 17 rising from the connecting member 36 passes through the through hole 25 d and protrudes from the upper surface of the light guide plate 25. The wind direction plate 10 is supported on the shaft portion 17.

  The wind direction plate 10 is an umbrella-shaped synthetic resin part having a circular planar shape and is slightly smaller in diameter than the air outlet 2b. The wind direction plate 10 pops up on the upper surface of the housing 2 as will be described later, but since it is circular, it does not feel pain even if it is touched by the user's fingers. The lower surface of the wind direction plate 10 is a conical inclined surface 10a. A circular name plate 10 b is fitted on the upper surface of the wind direction plate 10.

  The wind direction plate 10 is attached to a slide body that can slide with respect to the housing 2. What constitutes the slide body in the present embodiment is a sleeve 11 protruding downward from the center of the lower surface of the wind direction plate 10. The sleeve 11 is fitted to the outside of the shaft portion 17 and slides up and down along the shaft portion 17. A configuration in which a sleeve-like member is disposed on the side of the housing 2 and the shaft-like member inserted therein is a slide body is also possible.

  A compression coil spring 16 is disposed between the sleeve 11 and the shaft portion 17, and the compression coil spring 16 serves as a biasing unit that biases the sleeve 11 toward the outside of the housing 2.

  The sleeve 11 is provided with a push-on / push-off locking means that holds it against the urging force of the compression coil spring 16. Push-on / push-off type locking means that pops up when pressed and pops up and returns to the retracted position when pressed again is well known for knock-type ballpoint pens and electrical appliance switches, and the mechanism Various things are known. In the present embodiment, the first locking portion 17a and the second locking portion 17b that are formed on the side surface of the shaft portion 17 so as to be lined up and down, and the first locking portion 17a and the first locking portion provided inside the sleeve 11 are provided. The engaging member 12 that selectively engages with one of the two locking portions 17b constitutes a push-on / push-off type locking means 19.

  In FIG. 1 to FIG. 4, the wind direction plate 10 is popped up from the housing 2, and the engagement member 12 engages with the first locking portion 17 a to keep the wind direction plate 10 from protruding further. . A gap between the wind direction plate 10 and the air outlet 2b is greatly opened, and this is referred to as “the air outlet is opened” in this specification.

  5 and 6, the wind direction plate 10 is pushed into the housing 2 against the urging force of the compression coil spring 16, and is located in the air outlet 2b. The engaging member 12 engages with the second locking portion 17b to keep the wind direction plate 10 at its height. The gap between the wind direction plate 10 and the air outlet 2b is reduced, and this is referred to as “the air outlet is closed” in this specification. In addition, in this embodiment, although the wind direction board 10 has stopped in the state which produced the clearance gap between the blower outlets 2b, the structure which the wind direction board 10 obstruct | occludes the blower outlet 2b completely may be sufficient.

  The wind direction plate 10 does not contact the air outlet 2b, although the gap with the air outlet 2b is reduced. This is because in order to pop up the wind direction plate 10 again, it is necessary to depress the wind direction plate 10 again, and a space corresponding to the depressing stroke is required under the wind direction plate 10. However, if the inner surface of the air outlet 2b does not sag downward and the air direction plate 10 can be pushed down even after the air direction plate 10 comes into contact therewith, the air direction plate 10 is brought into contact with the air outlet 2b. In this case, the air outlet 2b may be completely closed.

  The displacement of the wind direction plate 10 as described above is used for on / off control of the power switch of the blower fan 30. The power switch 18 is installed under the light guide plate 25 and makes the actuator interfere with the slide locus of the sleeve 11.

  When the wind direction plate 10 comes to the position where the air outlet 2b is opened, that is, when it is in a pop-up state, the sleeve 11 does not push the actuator of the power switch 18 as shown in FIG. In this state, the power switch 18 is turned on.

  When the wind direction plate 10 comes to the position where the air outlet 2b is closed, that is, when the air direction plate 10 is pushed into the air outlet 2b, the sleeve 11 presses the actuator of the power switch 18 as shown in FIG. In this state, the power switch 18 is turned off.

  Thus, since the power switch 18 of the blower fan 30 can be switched on or off in accordance with the movement of the wind direction plate 10 opening or closing the air outlet 2b, the operation button or the operation lever of the power switch 18 is switched. Need not be provided on the outer surface of the housing 2, and the design of the blower 1 can be made clean. Further, if the position of the wind direction plate 10 is seen, the switching state of the power switch 18 can be known at a glance even from a distance.

  When the wind direction plate 10 is pushed into the housing 2, the air outlet 2b opens, and at the same time, the power switch 18 is turned on. When the wind direction plate 10 returns to the original position, the air outlet 2b is closed and the power switch 18 is turned on. It is also possible to configure so that is turned off.

  In the present embodiment, the blower fan 30 starts rotating as soon as the power switch 18 is turned on. However, the blower fan 30 may be configured not to be driven only when the power switch 18 is turned on, but to start rotating with the further operation such as the air volume setting by the air volume switching button 50 as an opportunity.

  Then, operation | movement of the air blower 1 is demonstrated. If the wind direction plate 10 is pushed into the pop-up state with the power cord 5 connected to the power source, the power switch 18 is turned on and the blower fan 30 starts rotating. The ion generating element 40, the LED 26, and the air volume indicator 51 are also energized, the ion generating element 40 starts generating ions, the LED 26 starts illuminating the light guide plate 25, and the air volume indicator 51 is set at that time. Start displaying the air volume.

  External air is sucked from the suction port 2a by the rotation of the blower fan 30, and the air passes through the filter 23 and then passes through the suction duct 20 and is sucked into the suction port 30b. The air is sucked into the casing 30a from the two intake paths of the intake path that passes through the outside and then passes through the inside of the duct member 32 and is sucked into the intake port 30c.

  The air sucked into the casing 30a is sucked into the sirocco fan 30e, then discharged from between the fan blades of the sirocco fan 30e, and blown out from the exhaust port 30d. The air blown out in the horizontal direction from the exhaust port 30d enters the blowout duct 21 and is redirected to a vertical airflow toward the blowout port 2b in the static pressure conversion region 21a. Along with this change in direction, the dynamic pressure of the airflow is converted into a static pressure. Once the dynamic pressure is converted to static pressure, the airflow rises inside the blowout duct 21, and ions generated from the ion generating element 40 are mixed in the air in the middle.

A high voltage having an AC waveform or an impulse waveform is applied to the discharge electrode 41 of the ion generating element 40, whereby the discharge electrode 41 performs corona discharge. A positive voltage is applied to one of the discharge electrodes 41, and water molecules in the air are ionized by corona discharge to generate hydrogen ions. This hydrogen ion is clustered with water molecules in the air by solvation energy. As a result, positive ions of air ions composed of H ⁺ (H ₂ O) m (m is 0 or an arbitrary natural number) are released.

A negative voltage is applied to the other discharge electrode 41, and oxygen ions or water molecules in the air are ionized by corona discharge to generate oxygen ions. This oxygen ion is clustered with water molecules in the air by solvation energy. Thereby, negative ions of air ions composed of O ₂ ⁻ (H ₂ O) n (n is an arbitrary natural number) are released.

H ⁺ (H ₂ O) m and O ₂ ⁻ (H ₂ O) n aggregate on the surface of airborne bacteria and odorous components and surround them. Then, as shown in the following formulas (1) to (3), the active species [.OH] (hydroxyl radical) and H ₂ O ₂ (hydrogen peroxide) are aggregated on the surface of the microorganism or the like by collision. To destroy airborne bacteria and odorous components. Here, m ′ and n ′ are arbitrary natural numbers. Accordingly, by sending positive ions and negative ions into the room from the air outlet 2b, the room can be sterilized and the odor can be removed.

H ⁺ (H ₂ O) m + O ₂ ⁻ (H ₂ O) n → OH + 1 / 2O ₂ + (m + n) H ₂ O (1)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ 2 OH + O ₂ + (m + m ′ + n + n ′) H ₂ O (2)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ H ₂ O ₂ + O ₂ + (m + m ′ + n + n ′) H ₂ O (3)

  The pair of discharge electrodes 41 are arranged apart in the left-right direction, which is a direction perpendicular to the airflow. For this reason, the positive ions generated at one discharge electrode 41 and the negative ions generated at the other discharge electrode 41 are less likely to recombine and disappear due to each other's collision, thereby increasing the amount of ions delivered. Can do. If both the discharge electrode 41 serving as the positive ion generation unit and the discharge electrode 41 serving as the negative ion generation unit are arranged outside the air flow blowing width of the blower fan 30 as in the present embodiment, The disappearance due to recombination of ions and negative ions can be further reduced.

  Passing through the discharge electrode 41 while entraining ions generated by the discharge electrode 41 is air whose dynamic pressure has been converted to static pressure in the static pressure conversion region 21a. In the static pressure conversion region 21a, the velocity component of the airflow once disappears, and an airflow directed toward the discharge electrode 41, which is an ion generation unit, is generated by the static pressure. Therefore, the direction of the airflow blown from the blower fan 30 is the discharge electrode. The amount of airflow passing through 41 is not significantly affected. Therefore, even if the discharge electrode 41 is disposed outside the air blowing width of the blower fan 30, a sufficient air flow passing through the discharge electrode 41 can be secured and ions can be efficiently delivered.

  Since the discharge electrode 41 is disposed on the outer peripheral side of the bent portion of the blowing duct 21, a portion having a large velocity component passes through the periphery of the discharge electrode 41 in the airflow passing through the static pressure conversion region 21a. For this reason, ions can be delivered efficiently.

  The airflow blown out from the blower fan 30 is evenly distributed to the left discharge electrode 41 and the right discharge electrode 41 by an airflow branching portion 45d formed in the bent portion 45a. Therefore, there is no air volume imbalance between the air flow for sending positive ions and the air flow for sending negative ions.

  At least a part of the air passing through the static pressure conversion region 21a flows between the housing of the ion generating element 40 and the electrode protection plate 40b. Therefore, the presence of airflow passing through the discharge electrode 41 is ensured, and ions generated at the discharge electrode 41 can be reliably delivered.

  Another part of the air passing through the static pressure conversion region 21a passes through the through hole 40 and is blown to the discharge electrode 41. This also ensures the existence of the airflow passing through the discharge electrode 41, and the ions generated at the discharge electrode 41 can be reliably delivered.

  In this way, the horizontal air flow blown from the blower fan 30 is converted into a vertical air flow toward the outlet 2b, and the static pressure conversion region 21a for converting the dynamic pressure of the air flow into static pressure or ions immediately thereafter Since the ion generating part of the generating element 40 is arranged, it is not necessary to make the blowing duct 21 that is a blowing path long in the vertical direction for the arrangement of the ion generating element 40, and the height of the blowing device 1 is suppressed. be able to.

  Among the static pressure conversion region 21a and the vicinity thereof, the connection portion between the bent portion 45a and the straight portion of the blowout duct 21 that connects the bent portion 45a to the outlet 2b is “the dynamic pressure of the blown airflow is converted into the static pressure. As a result, it is a place where the effect that “a part of the airflow expands to the full width of the blowout duct 21” is most easily obtained, and also the place most suitable for suppressing the height of the charged particle delivery device 1 is there. Therefore, by disposing the ion generating portion of the ion generating element 40 at this location, the disappearance due to recombination of positive ions and negative ions can be further reduced, and the height of the charged particle delivery device 1 can be suppressed. it can.

  Air containing positive ions and negative ions ascends in the blowout duct 21 as indicated by an arrow B1 in FIG. 2, passes through the communication port 25b of the light guide plate 25, and exits into the blowout port 2b. The air that has flowed into the air outlet 2b continues to rise as indicated by the arrow B2 and strikes the lower surface of the wind direction plate 10. And it blows out outside at an angle closer to horizontal as shown by arrow B3.

  The air can flow out from the entire area of the annular outflow portion 8 formed between the air outlet 2b and the wind direction plate 10, but actually, the communication port 25b opens at a position in front of the shaft portion 17 and communicates. Since the guide plate 25c provided at the opening 25b also guides the airflow toward the front, the air blowing is concentrated in the forward direction.

  In order to encourage the air blowing to concentrate in the forward direction, as shown in FIGS. 2 and 7, a recess 22 is formed on the inner surface of the air outlet 2b. The inner surface of the air outlet 2b squeezes while drawing a curve that is convex toward the central direction at locations other than the recesses 22, whereas the recess 22 linearly squeezes. In the recess 22 formed in this manner, the gap width with the wind direction plate 10 is widened, and more air flows out from here.

  If the front of the blower 1 is directed toward the user, the air flow including ions concentrates around the user, and the user is given both a physical cooling sensation by the wind and a cooling sensation by the ions. Become. The ions also sterilize and deodorize around the user. Furthermore, air circulation occurs in the room by the air flow blown out from the blower 1, and sterilization and deodorization are promoted throughout the room.

  When the power switch 18 is turned on, the LED 26 is turned on, and the LED 26 emits light in the horizontal direction. The light emitted from the LED 26 enters the light guide plate 25 from the incident surface 25a. Since the light guide plate 25 is processed to reflect light upward, the light changes its direction inside the light guide plate 25 and strikes the lower surface 10 a of the wind direction plate 10. The light is reflected radially on the lower surface of the wind direction plate 10 and indirectly illuminates the surroundings of the blower device 1. Since light is not reflected upward at the location of the communication port 25b, there is little light that hits the front portion of the lower surface 10a of the wind direction plate 10, and the user in front of the blower 1 does not have to feel glare.

  A separate switch may be provided for the LED 26 so that the user can select whether to turn on the LED 26 in conjunction with the pop-up of the wind direction plate 10.

  When the use of the blower 1 is finished, the wind direction plate 10 is pushed down to return from the pop-up state of FIG. 1 to the storage state of FIG. Then, the power switch 18 is turned off, and the blower fan 30 and the ion generating element 40 stop operating. The LED 26 and the air volume indicator 51 are turned off.

  If the air blower 1 is used for a long time, dust will adhere thickly to the filter 23, and the ion generating element 40 will need to be maintained. When the accumulated usage time that is a standard for cleaning the filter 23 is reached, the control unit (not shown) of the blower 1 turns on the indicator 53. When the accumulated usage time that is a guide for the care of the ion generating element 40 is reached, the control unit turns on the indicator 54.

  In order to clean the filter 23 or clean the ion generating element 40, the user who has seen the lighting of the indicator 53 or 54 needs to remove the bottom plate 3. In order to remove the bottom plate 3, it is necessary to pull out the plug 6 of the power cord 5 from the terminal 35 before that. Therefore, there is no possibility that the user will get an electric shock during the cleaning or care work.

  The bottom plate 3 is fixed to the housing 2 by screws 38 shown in FIG. The screw 38 is of a type that can be turned with a coin, and the bottom plate 3 can be removed without a screwdriver. The screw 38 is prevented from being detached from the bottom plate 3, and there is no fear of losing it.

  If the bottom plate 3 is removed from the housing 2 as shown in FIG. 13, the filter 23 can be pulled out from the lower surface opening of the housing 2. The extracted filter 23 is returned to its original position after being cleaned. In addition, the ion generating element 40 can be maintained by pulling the holding member 45 together with the ion generating element 40 and then removing the ion generating element 40 from the holding member 45.

  After the maintenance is completed, the ion generating element 40 is attached to the holding member 45 again, and the holding member 45 is returned to the original position. When the holding member 45 is placed in a predetermined position that becomes a part of the blowing duct 21, the connection terminal 40 a comes into contact with the terminal portion 42, and electrical connection to the ion generating element 40 is established. When the bottom plate 3 is fixed to the housing 2 and the plug 6 of the power cord 5 is connected to the terminal 35, the blower 1 is ready for use again.

  The user who has finished cleaning the filter 23 or cleaning the ion generating element 40 presses the reset button 52. As a result, the counting of the accumulated time restarts from zero.

  Since the blower device 1 has a small cubic shape, there is a possibility of falling over when an object hits it. As shown in FIG. 15, the upside down may be inverted. It is meaningless for the blower 1 to continue operation in such a state. Therefore, it is preferable that the operation of the blower 1 is automatically stopped when it is in an inverted state.

  If it is the air blower 1 of the structure concerning this invention, it can respond to said request | requirement comparatively easily. If the wind direction plate 10 is in a pop-up state when the inverted state shown in FIG. Since the entire mass of the blower device 1 excluding the mass of the wind direction plate 10 and the member that moves together is applied to the compression coil spring 16, it is sufficient that the urging force of the compression coil spring 16 is lost to this mass. If it does so, the wind direction board 10 which was a pop-up state will be retracted in the blower outlet 2b by the inversion of the air blower 1, and the power switch 18 will be turned off. As a result, the operation of the blower 1 is stopped.

  In the present embodiment, the ion generating element 40 is incorporated in the air blower 1 and the air flow containing ions combined with moisture in the air is sent out, not just air blowing, but charged particles other than ions are included in the air flow. It is good as well. Examples of charged particles other than ions include charged fine particle water. If an electrostatic atomizer is used, the charged fine particle water containing a radical component can be produced | generated. That is, condensed water is generated on the surface of the discharge electrode by cooling the discharge electrode provided in the electrostatic atomizer with a Peltier element. When a negative high voltage is applied to the discharge electrode, charged fine particle water is generated from the dew condensation water.

  Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention.

  The present invention can be widely used for a small blower suitable for use on a table.

DESCRIPTION OF SYMBOLS 1 Air blower 2 Housing | casing 2a Inlet 2b Outlet 10 Wind direction board 11 Sleeve (slide body)
16 Compression coil spring (biasing means)
18 Power switch 19 Locking means 30 Blower fan

Claims (7)

A housing in which an inlet and an outlet are formed;
A blower fan disposed in the casing that forms an airflow that is sucked into the casing from the inlet and blown out of the casing from the outlet;
A wind direction plate disposed at the outlet and displaceable between a position for opening the outlet and a position for closing the outlet;
A power switch of the blower fan that is turned on when the wind direction plate comes to a position for opening the air outlet, and turned off when the wind direction plate comes to a position for closing the air outlet;
The air blower characterized by comprising.   The air outlet is opened when the wind direction plate is displaced so as to jump out of the housing, and the air outlet is closed when the wind direction plate is displaced so as to be pushed into the housing. The blower described in 1.   The blower according to claim 2, wherein the wind direction plate is attached to a slide body slidable with respect to the housing, and the power switch is turned on / off in conjunction with the slide of the slide body. apparatus.   There are provided urging means for urging the slide body toward the outside of the casing, and push-on / push-off locking means for retaining the slide body against the urging force of the urging means. The blower according to claim 3.   The blower according to claim 4, wherein an urging force of the urging unit is set so that the power switch is turned off when the air outlet is installed with the air outlet facing downward. .   The blower according to any one of claims 1 to 5, wherein the air outlet is formed on an upper surface of the housing.   The blower according to any one of claims 1 to 6, wherein the air outlet has a circular shape and the wind direction plate has an umbrella shape.

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