JP6572428B2 - Blower - Google Patents

Description

  The present invention relates to a blower, and more specifically, a fan or a ceiling fan that is installed on a ceiling, wall, or floor surface of a living room to reduce the temperature of sensation by direct air flow or circulate indoor air. The present invention relates to a blower.

  Conventionally, this type of air blower includes an impeller and a motor in a base serving as a pedestal, and air is circulated so as to blow out horizontally from an annular air blower provided at the top of the base. In addition, a home blower that generates a flow of air is known (for example, see Patent Document 1).

  Hereinafter, the blower will be described with reference to FIGS. 6 and 7.

  FIG. 6 is a projection view of the blower assembly 100 as viewed from the front, and FIG. 7 is a cross-sectional projection view of the blower assembly 100. The blower assembly 100 has an annular nozzle 101 that defines a central opening 102. A motor 122 that creates an air flow through the annular nozzle 101 is disposed within the base 116 along with the motor housing 126. Further, the impeller (impeller) 130 is connected to a rotating shaft extending outward from the motor 122, and the motor 122 in which the diffuser 132 is positioned downstream of the impeller 130 is connected to an electrical connection unit and a power source. A plurality of selection buttons 120 allow the user to operate the blower assembly 100.

  With the above configuration, the above-described blower assembly 100 operates as follows.

  The motor 122 is driven by the user appropriately selecting from a plurality of selection buttons 120. Thus, the motor 122 is activated and air is drawn into the blower assembly 100 through the air inlet 124. Air flows through the outer casing 118 to the inlet 134 of the impeller 130. The air flow that exits the outlet 136 of the diffuser 132 and the exhaust portion of the impeller 130 is divided into two air flows that travel in opposite directions through the internal passage 110.

  The air flow is throttled as it enters the mouth 112 and is further throttled at the outlet 144 of the mouth 112. This throttling creates pressure in the system.

  The air flow thus created overcomes the pressure produced by the restriction and the air flow exits through the outlet 144 as the primary air flow. The primary air flow is concentrated or focused toward the user depending on the arrangement of the guide portion 148. The secondary air flow is generated by entrainment of air from the outside environment, particularly from the area around the outlet 144 and around the outer edge of the annular nozzle 101. This secondary air flow passes through the central opening 102 where there is a total air flow that mixes with the primary air flow and is discharged forward from the blower assembly 100.

JP 2010-077969 A

  In such a conventional blower, the blown air flow is a continuous air flow generated by the continuous rotation of the motor 122, and provides the user with a smooth air flow with little pulsation. However, when trying to realize an air flow that is short in time, such as a fan-like wind, that is, momentary fluctuations in strength and weakness, the inertia of the motor 122 becomes an obstacle and cannot be realized. In other words, even if the rotation speed of the motor 122 is changed, the rotation speed of the motor 122 cannot be changed instantaneously due to inertia, so that the strength of the air flow cannot be changed instantaneously. It was.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object of the present invention is to provide a blower device that can realize instantaneous fluctuation of strength like a fan-like wind.

And in order to achieve this object, the present invention comprises a substantially cylindrical main body having a suction port for sucking air and a blower outlet for blowing out air sucked from the suction port,
In a blower provided with an impeller and a motor for rotating the impeller, and a high-pressure air generator that guides air from the suction port to the blowout port,
An air amount adjusting means for adjusting an amount of air flowing from the high-pressure air generation unit to the blowout port at a position between the high-pressure air generation unit and the blowout port;
The air amount adjusting means adjusts the amount of air flowing from the high-pressure air generating unit to the air outlet while the impeller is rotated at a constant speed. To achieve.

  According to the present invention, it is provided with the air amount adjusting means for adjusting the amount of air flowing from the high pressure air generating unit to the outlet at a position between the high pressure air generating unit and the outlet, and the impeller is moved at a constant speed. By making the air amount adjustment means adjust the amount of air flowing from the high-pressure air generating section to the blowout port in the rotated state, the air flow is momentarily fluctuated like a fan. Is something that can be given.

The perspective view of the air blower of Embodiment 1 of this invention The block diagram which shows the cross section A of the air blower of Embodiment 1 of this invention. The block diagram which shows the cross section B of the air blower of Embodiment 1 of this invention The perspective view of the damper of Embodiment 1 of this invention The figure which shows the concept of the time change of the strength of the airflow of Embodiment 1 of this invention. Front view showing an example of conventional technology Sectional drawing which shows an example of a prior art

  A blower device according to an embodiment of the present invention includes a substantially cylindrical main body having a suction port for sucking air and a blower port for blowing out air sucked from the suction port, an impeller, and the impeller. And a high-pressure air generation unit that guides air from the suction port to the blow-out port, and the amount of air flowing from the high-pressure air generation unit to the blow-out port and the high-pressure air generation unit An air amount adjusting means for adjusting the air amount at a position between the air outlet and the air amount adjusting means in a state in which the impeller is rotated at a constant speed; The amount is adjusted.

  By rotating the impeller at a constant speed, when the air amount adjusting means is not used, a temporally continuous air flow, that is, a smooth air flow with less pulsation can be provided to the user. Further, by using the air amount adjusting means, it is possible to provide the user with an air flow having momentary fluctuations like a fan wind.

  An attracting air suction unit that attracts air drawn from the air outlet and sucks the attracting air, an attracting air blowing unit that blows out the air sucked from the attracting air suction unit, the high-pressure air generation unit, and the blowing A first air passage that communicates with the outlet; and a second air passage that communicates the attracting air suction portion and the attracting air blowing portion; and the air outlet is substantially ring-shaped around an outer periphery of the attracting air blowing portion. The air amount adjusting means includes a substantially circular damper coaxially with the rotation shaft of the impeller and a damper motor for rotating the damper, and the impeller is rotated at a constant speed. The amount of air flowing through the first air passage is changed by changing the air passage area of the first air passage by the rotation of the damper, and the amount of air blown from the air outlet and the induced air based on this change Invitation blown out from the blowing section It may be configured to vary the amount of air.

  In this configuration, since the air passage area of the first air passage can be continuously changed by the rotation of the damper, the strength of the air flow continuously fluctuates in the air flow blown from the blower. For this reason, it is possible to provide a user with an air flow that fluctuates like a fan. The impeller and the damper are included in the main body. For this reason, the user cannot contact the impeller and the damper, and safety can be improved. In addition, since the user cannot visually observe the impeller and the damper, it is possible to provide the user with an airflow like a fan, without feeling a sense of pressure due to the rotation of the impeller and the damper.

  The first air passage is provided inside a side surface of the substantially cylindrical main body, a plurality of the induced air suction portions are provided on the side surface of the main body, and the second air passage is the attracting air suction portion. The first air passage is divided into a plurality of parts by being provided as a space that is penetrated in the direction of the central axis of the substantially cylindrical shape and independent of the first air path, and the air amount adjusting means is divided into a plurality of parts. The amount of air flowing through the first air path may be changed simultaneously by the damper.

  Since the amount of air flowing through the first air passage can be completely shielded by simultaneously changing the amount of air flowing through the first air passage divided by the damper, the air provided to the user The amount of change in flow can be increased. In addition, since the impeller is rotating when shielding the amount of air flowing through the first air passage, the pressure in the space between the impeller and the damper is reduced by the damper to the first air passage. Compared with the case where the amount of air flowing in the air is not shielded, the pressure becomes higher. When the damper is rotated to release the shielding of the first air passage, the increased pressure in the space between the impeller and the damper is released. For this reason, an air flow stronger than the normal state in which the amount of air flowing through the first air passage is not blocked by the damper is instantaneously blown out from the air outlet, realizing a more instantaneous fluctuation of strength. it can.

  Moreover, you may enable it to change arbitrarily the rotational speed of the said damper.

  By changing the rotation speed of the damper, it is possible to adjust the change interval of the strength of the air flow blown out from the blower, so the change in the strength of the air flow is realized with a rhythm according to the user's wish can do.

  Moreover, you may equip the said attraction | suction air suction part with the position equidistant from the said blower outlet.

  Since the plurality of attracting air suction portions are equidistant, the air sucked from the plurality of attracting air suction portions is mixed at the air blowing center. For this reason, it is possible to generate an air current that is strongly gathered at the center of the air blowing, and it is possible to obtain an air current that reaches far away with little attenuation of the wind speed.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. In addition, the following embodiment is an example which actualized this invention, Comprising: The thing of the character which limits the technical scope of this invention is not. Throughout the drawings, the same constituent elements are denoted by the same reference numerals, and description thereof is omitted. Furthermore, in each drawing, the description of the details of each part not directly related to the present invention is omitted.

(Embodiment 1)
In FIG. 1, the perspective view of the air blower 11 concerning this Embodiment is shown.

  As shown in FIG. 1, the air blower 11 is comprised by the base part 13 which fixes the substantially cylindrical shaped air blower 12 and the air blower 12, and produces an air current in the arrow direction of FIG. is there.

  The air blower 12 has a top surface in a substantially cylindrical shape, that is, a direction of blowing air as a front surface, and a bottom surface, that is, a direction opposite to the air blowing direction as a back surface.

  A suction port 14 for sucking air is provided on the back surface. The front surface is provided with a ring-shaped air outlet 15 that blows out air sucked from the air inlet 14, and an induced air outlet 16 on the inner peripheral side of the air outlet 15.

  A plurality of (six in this embodiment) induced air suction portions 18 are provided on the side surface of the blower portion 12 at equal distances from the central axis 17 connecting the centers of the top and bottom circles and the air outlet 15. Yes.

  The attraction air suction portion 18 communicates with the attraction air blowing portion 16 via an internal space in the substantially cylindrical shape of the air blowing portion 12, that is, an attraction air mixing portion described later.

  The pedestal portion 13 includes a support column 19 that supports the air blowing unit 12 and a support unit 20 that supports the support column 19 at the lowermost part.

  The support unit 20 includes a power switch 21 that controls on / off of the operation of the blower unit 12 (fan motor described later) and a wind speed variation switch 22 that controls the operation of a damper motor described later. ing.

Next, the internal structure of the air blowing unit 12 will be described with reference to FIGS. 2, 3, and 4. 2 is a block diagram showing a cross section of the blower 11 in the cross section A in FIG. 1, FIG. 3 is a block diagram showing a cross section of the blower 11 in the cross section B in FIG. 1, and FIG. 4 is a perspective view of the damper. is there. Feed air portion 12, as shown in C of FIG. 2, the high pressure air generator 23 for generating a high-pressure air into a first air passage 24 communicating the high pressure air generator 23 and the outlet 15, a plurality The second air passage 25 that communicates the attraction air suction section 18 and the attraction air blowing section 16, the attraction air mixing section 26, and the air amount adjusting means 27 are provided.

  The high-pressure air generator 23 includes a turbo fan 28 as an impeller that guides air from the suction port 14 to the air outlet 15 and a fan motor 29 that drives the turbo fan 28.

  The fan motor 29 is turned on / off by the power switch 21 shown in FIG.

  The first air passage 24 is provided inside the side surface of the substantially cylindrical air blowing unit 12, and a plurality of the induced air suction units 18 are provided on the side surface of the air blowing unit 12 at positions equidistant from the air blowing center. Here, the air blowing center indicates a central axis 17 that passes through the center of the air blowing part 12 in parallel with the blowing direction of the induced air blowing part 16.

  The second air passage 25 penetrates from the induced air suction portion 18 toward the central axis 17 of the substantially cylindrical shape, and is provided as a space independent of the first air passage 24 to divide the first air passage 24 into a plurality of parts. ing.

  The air amount adjusting means 27 includes a substantially circular damper 30 and a damper motor 31 that rotationally drives the damper 30. The damper 30 is provided with the turbo fan 28 and the rotation axis aligned.

  As shown in FIG. 4, the damper 30 is substantially circular and includes a circular central opening 32 at the center, and has a donut shape when viewed from above. The periphery of the central opening 32 is provided with a notch, and can rotate about the center 33 of the central opening 32 by engaging with the notch of the damper motor 31. Further, the damper 30 includes a plurality of protrusions 34 at the peripheral edge with the center 33 as the center. Further, the damper 30 is provided with an outer peripheral opening 35 concentrically with the protrusion 34, sandwiched between adjacent protrusions 34.

  The outer peripheral opening 35 and the protrusion 34 each have an area larger than the cross-sectional area of the first air passage 24, and are provided in the same number as the divided first air passages 24 and at the same intervals as the first air passages 24. For this reason, by rotating the damper 30, it is possible to open all the downstream openings of the first air passage 24 at the same time, or simultaneously close them, and open (close) them at a certain rate, and simultaneously change them. .

  Subsequently, the operation of each unit when the blower 11 is driven will be described with reference to FIGS. 2, 3, and 5. FIG. 5 is a diagram illustrating the concept of time change in the strength of the airflow blown from the blower 11.

  2 and FIG. 3C shows the configuration when the first air passage 24 is completely opened as an example, and FIG. 2 and FIG. 3D shows the configuration when the first air passage 24 is completely closed as an example. The configuration is shown.

  First, the state shown in FIG. 2C and FIG. 3C, that is, the state where the first air passage 24 is completely opened will be described. In this state, as shown in FIG. 3C, the entire cross section of the first air passage 24 exists inside the outer peripheral opening 35 of the damper 30. That is, the first air passage 24 is 100% open.

  As shown in FIG. 2, when the power switch 21 is operated in this state, the fan motor 29 is driven by power, that is, power is supplied from a power supply unit (not shown) having a control base for controlling voltage and the like. The turbo fan 28 is driven. Note that power is drawn into the power supply unit from, for example, a household outlet located outside the blower 11.

  By driving the turbo fan 28, air X (indicated by a solid line arrow) is sucked from the suction port 14. The sucked air X is increased in pressure by the high-pressure air generator 23 by the turbo fan 28 and blown out from the outlet 15 through the first air passage 24.

  When air X is blown out from the air outlet 15, the pressure around the attraction air blowing portion 16 becomes negative pressure. Therefore, the air X (indicated by broken arrows) is attracted by the air X blown out from the air outlet 15. The air is sucked from the attraction air suction unit 18. The air Y sucked from the plurality of attracting air suction portions 18 is mixed in the attracting air mixing portion 26 and further mixed with the air X in the vicinity of the air outlet 15 to be delivered to a distant place as a large airflow. This state corresponds to the range of time A in the graph of FIG. 5 where the vertical axis represents the strength of the air flow and the horizontal axis represents the time, and the strength of the blown air flow is constant. In this state, a smooth air flow with less pulsation can be provided to the user.

  Here, the wind speed fluctuation switch 22 is operated (On in FIG. 5). As a result, the damper motor 31 is driven, whereby the damper 30 is rotationally driven to shift from the state C to the state D in FIG.

  At this time, even if the damper 30 shifts from the C state to the D state, the turbo fan 28 rotates at a constant speed. In this state, as shown in D of FIG. 3, the entire cross section of the first air passage 24 exists inside the protruding portion 34 of the damper 30. That is, the first air passage 24 is 100% closed. In this state, as shown in D of FIG. 2, the air X sucked from the suction port 14 is pressurized by the high-pressure air generator 23 by the turbofan 28, but the first air passage 24 is closed by the damper 30. Therefore, no airflow flows through the first air passage 24. For this reason, the space between the turbo fan 28 and the damper 30 is in a higher pressure than the C state. And in the state of D, since the flow of the airflow to the blower outlet 15 stops, the airflow in the blower outlet 15 attenuate | damps rapidly, and becomes substantially zero.

  When the damper 30 further shifts from the D state to the C state in the above state, the increased pressure in the space between the turbo fan 28 and the damper 30 is released. For this reason, as shown in FIG. 5, an air flow 51 that is stronger than the state C before closing the first air passage 24 by a peak difference 50 is instantaneously blown from the outlet 15. In other words, a strong air flow 51 can be generated instantaneously.

  Furthermore, by rotating the damper 30 and continuously changing the above-described C and D states, as shown in the range of time B, the air is repeatedly momentarily repeated so as to continuously fan the fan. A flow, that is, a fan-like wind can be provided to the user. For reference, the relationship between the strength of the air flow and time when a conventional fan is turned on and off is shown as a curve 52 in FIG. When a conventional fan (motor) is turned on / off, the rotational speed of the motor cannot be instantaneously changed due to inertia, and therefore the strength of the airflow cannot be instantaneously changed. For this reason, the quality difference with the wind which the air blower 11 concerning this Embodiment provides is clear.

  In the present embodiment, as described above, the blower device 11 has an attracting structure. When the attraction structure is provided, the airflow blown out from the blowout port 15 entrains the surrounding air and can realize a large air volume. In other words, when stopping the blowing, it is possible to stop blowing a large amount of air only by stopping a small amount of air blown from the outlet 15.

  In other words, compared to a configuration that does not have an attracting structure, that is, a configuration in which a large amount of air is maintained at a high pressure and then released at a stretch, it is possible to realize a fan-like wind without placing a burden on the housing, motor, fan, etc. It is advantageous.

  Since the movable part such as the turbo fan 28 is included, the user cannot touch the movable part such as the turbo fan 28 and is safe. In addition, since the user cannot visually observe the movable part such as the turbo fan 28, the instantaneous air flow is strong like the fan wind without feeling the pressure due to the rotation of the movable part such as the turbo fan 28. It is possible to provide an air flow with fluctuations.

  In addition, it is good also as a structure which can change the rotational speed of the damper 30 arbitrarily. Specifically, by changing the rotational speed of the damper 30, it is possible to adjust the interval at which the strength of the air flow blown out from the blower device 11 changes, so that the rhythm air flow according to the user's wishes can be adjusted. A change in strength can be realized.

  In addition, by providing a plurality of attracting air suction portions 18, even in a use state where one said attracting air suction portion 18 is blocked, air can be attracted from other attracting air suction portions 18, so that sufficient performance is exhibited. be able to.

  Further, since the plurality of attracting air suction portions 18 are equidistant, the air sucked from the plurality of attracting air suction portions 18 is mixed by the attracting air mixing portion 26 at the center of the air blowing, so that the air is strongly gathered at the air blowing center. An airflow can be generated, and the airflow can reach far away with little attenuation of the wind speed.

  The blower according to the present invention is installed on a floor, a desk, a ceiling, or a wall in a living room, and is useful as various blower devices used for reducing the temperature of sensation caused by direct air flow or circulating indoor air.

DESCRIPTION OF SYMBOLS 11 Air blower 12 Air blower 13 Base part 14 Suction inlet 15 Air outlet 16 Inductive air blowing part 17 Center shaft 18 Attracting air suction part 19 Support | pillar 20 Support part 21 Power switch 22 Wind speed fluctuation switch 23 High pressure air generation part 24 First air path 25 Second air passage 26 Induced air mixing section 27 Air amount adjusting means 28 Turbo fan 29 Fan motor 30 Damper 31 Damper motor 32 Central opening 33 Center 34 Projection 35 Outer opening 100 Blower assembly 101 Annular nozzle 102 Center Opening 110 internal passage 112 port 116 base 118 outer casing 120 selection button 122 motor 124 air inlet 126 motor housing 130 impeller 132 diffuser 134 inlet 136 outlet 144 outlet 148 guide portion

Claims (4)

A substantially cylindrical body having a suction port for sucking air and a blow-out port for blowing out air sucked from the suction port;
An impeller and a motor for rotating the impeller, and a high-pressure air generator that guides air from the suction port to the blowout port;
A first air passage communicating the high-pressure air generator and the air outlet;
An air amount adjusting means for adjusting an amount of air flowing from the high-pressure air generating unit to the blow-out port through the first air passage at a position between the high-pressure air generating unit and the blow-out port;
With
The air amount adjusting means includes a substantially circular damper coaxially with the rotation shaft of the impeller, and a damper motor that rotationally drives the damper, and by arbitrarily changing the rotation speed of the damper, while rotating the impeller at a constant speed, blowing device an amount of the air, and adjusting the air passage area of the first one air passage by changing with time. An attracting air suction section that attracts air that is blown out from the air outlet and sucks in the attraction air;
An attraction air blowing section for blowing out air sucked from the attraction air sucking section;
A second air passage communicating the attraction air suction part and the attraction air blowing part;
The outlet is provided in a substantially ring shape on the outer periphery of the attraction air outlet,
Before SL air quantity adjusting means, the amount of air flowing through the impeller while rotating at a constant speed, the first air passage by changing the air passage area of the first air passage by the rotation of the damper It is varied, blowing of claim 1, wherein the changing over time the amount of attractant air issued come blown from the amount and the attraction air blowout portion of the air out come blown from the air outlet on the basis of this apparatus. The first air path is provided inside the side surface of the substantially cylindrical main body,
A plurality of the attracting air suction portions are provided on a side surface of the main body,
The second air passage is divided into a plurality of the first air passages by being provided as a space independent from the first air passage penetrating in the direction of the central axis of the substantially cylindrical shape from the attraction air suction portion,
The blower according to claim 2, wherein the air amount adjusting means simultaneously changes the amount of air flowing through the first air passage divided into a plurality by the damper. The air blower according to claim 3 , wherein a plurality of the attraction air intake portions are provided at positions equidistant from the air outlet.

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