JP2016156272A - Air blower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air blower capable of blowing air toward a close-range user at a wide range, even in a case where the area of an induction air suction port is made small.SOLUTION: In an air blower utilizing air induction, by including an auxiliary blowout port configured to blow part of high-pressure air to a side wall on an induction air mixing part side in an air guide part for guiding high-pressure air to a first blowout port, occurrence of negative pressure in the vicinity of a blowout port is suppressed. Consequently, a phenomenon that air flow is limited to a narrow range can be reduced, and wide-range air blowing can be performed even in a close range.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a blower that gives a refreshing feeling by blowing air or promotes air circulation in a space.

  Conventionally, this type of blower is known as a blower that encloses an impeller and a motor in a casing and blows out air from an annular blower to generate an air flow (for example, Patent Documents). 1).

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

  6 is a perspective view of the blower 101, and FIG. 7 is a cross-sectional projection view of the blower 101. The blower 101 includes a suction port 103 for taking air into the housing 102, an impeller 104 for generating high-pressure air, and a high-pressure air generating means 106 configured by a motor 105 for driving the impeller 104. The ring-shaped air outlet 107 for blowing out the high-pressure air, the first air passage 108 for guiding the high-pressure air from the impeller 104 to the air outlet 107, and the air that is attracted by the air blown out from the air outlet 107. A plurality of attraction air inlets 109 for sucking in, an attraction air mixing unit 110 for mixing the air sucked into the attraction air suction ports 109, an attraction air outlet 111 for blowing out the attraction air, and the attraction A second air passage 112 that communicates the air suction port 109, the induced air mixing unit 110, and the induced air outlet 111 is provided.

  With the above configuration, the blower 101 operates as follows. When the high-pressure air generating means 106 is driven, an air flow from the suction port 103 to the outlet 107 is generated. Attracted by this air flow, air is attracted from a plurality of attraction air inlets 109. The air attracted from the plurality of attracting air inlets 109 is mixed by the attracting air mixing unit 110 and blown out from the attracting air outlet 111 in a state where the flow is changed in the direction of the attracting air outlet 111. At this time, since the air blown out from the blow-out port 107 is blown out together, a large amount of air can be blown.

JP 2013-224650 A

  Such a conventional blower device is required to be reduced in size and thickness according to needs, and further to change the shape of the attraction air inlet. However, if the area of the attracting air inlet is reduced due to these effects, the amount of air that can be attracted decreases. When the amount of air that can be attracted decreases, the amount of attracting air that is blown out around the attracting air outlet decreases, resulting in a negative pressure in this region. As a result, the high-pressure air discharged from the air outlet flows in the negative pressure region, that is, in the state where the pressure directed toward the central axis is applied, and flows in the downstream direction together with the induced air. As a result, there has been a problem that the air blown out from the blower device can only blow air in a narrow range.

  Therefore, the present invention solves the above-described conventional problems, and an object of the present invention is to provide a blower capable of blowing air over a wide range even when the area of the attraction air suction port is reduced.

  The present invention includes a suction port for taking in air, high-pressure air generating means for generating high-pressure air by compressing air taken from the suction port, a first outlet for blowing out the high-pressure air, and the high-pressure air as described above. An air guide portion leading from the high pressure air generating means to the first air outlet, a first air passage communicating the suction port, the high pressure air generating means, the air guide portion and the first air outlet, and the first air outlet. A plurality of attraction air inlets that are formed by through holes that penetrate the air guide portion in a direction perpendicular to the outlet blowing direction and that are drawn into the air blown out from the first outlet and suck in the air, and a plurality of the attraction air suctions An attracting air mixing unit that mixes air sucked from the mouth, an attracting air outlet that blows out the air mixed in the attracting air mixing unit, the attracting air suction port, the attracting air mixing unit, and the attracting air Second communicating with the outlet Auxiliary air outlet that blows out part of the high-pressure air to the side wall on the induced air mixing part side of the air guide part that is sandwiched between the first air outlet and the induced air inlet in the first air path This achieves the intended purpose.

  According to the present invention, it is possible to provide a blower capable of blowing air over a wide range even when the area of the attracting air suction port is reduced.

The perspective view which shows the air blower of Embodiment 1 of this invention. The side view which shows the air blower of Embodiment 1 of this invention. Sectional drawing which shows the air blower of Embodiment 1 of this invention. (A) Side cross-sectional view of a conventional air blower with a narrowed air intake port, (b) Side cross section of the air blower according to Embodiment 1 of the present invention with a narrow air intake port Figure Comparative schematic diagram of velocity distribution at a position that is a short distance away from the conventional air blower in which the equivalent induction air inlet is narrowed and the air blower according to Embodiment 1 of the present invention. Perspective view showing an example of the prior art Sectional drawing which shows the structure in the cross section A of an example of a prior art

  The blower according to the present invention includes a suction port for taking in air, high-pressure air generating means for generating high-pressure air by compressing air taken in from the suction port, a first outlet for blowing out the high-pressure air, A wind guide portion that guides high-pressure air from the high-pressure air generating means to the first air outlet, a first air passage that communicates the suction port, the high-pressure air generating means, the air guide portion, and the first air outlet; A plurality of air inlets that are formed by a through-hole penetrating the air guide portion in a direction perpendicular to the blowing direction of the first air outlet, and that draw air into the air blown out from the first air outlet; An attraction air mixing unit that mixes air sucked from the attraction air suction port, an attraction air outlet that blows out the air mixed at the attraction air mixing unit, the attraction air suction port, and the attraction air mixing unit And the attraction air outlet A part of the high-pressure air is provided on a side wall on the induced air mixing part side of the air guide part sandwiched between the first air outlet and the induced air suction port in the second air path communicating with the first air path. It is an air blower provided with the auxiliary blower outlet which blows off.

  Thereby, even when the area of the attraction air suction port is reduced, negative pressure around the air outlet can be suppressed and air can be blown over a wide range.

  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. Moreover, the same code | symbol is attached | subjected about the same site | part through all drawings, and description is abbreviate | omitted. Furthermore, in each drawing, the description of the details of each part not directly related to the present invention is omitted.

(Embodiment 1)
Hereinafter, the configuration of Embodiment 1 of the present invention will be described in detail with reference to FIGS.

  FIG. 1 is a perspective view of the blower, and FIG. 2 is a side view of the blower.

  As shown in FIG. 1 and FIG. 2, the blower 1 includes a bowl-shaped housing 2, a pedestal 3 provided as a truncated cone rising from the bottom surface in the center of the bowl-shaped internal space, and a bottom surface in the bowl shape. It is comprised from the cylindrical subhousing 4 protruded toward the outer side.

  The housing 2 is provided with a first air outlet 5, an induced air inlet 6, an induced air mixing unit 7, an induced air outlet 8, an air guide 9, and an auxiliary air outlet 10.

  The 1st blower outlet 5 is formed as an opening part of an annular slit on the circumference of the opening side in a bowl shape.

  The attraction air suction ports 6 are provided as a plurality of substantially rectangular openings that penetrate from the outside of the side wall portion toward the central axis 50 (rotation axis) of the bowl shape at equal intervals along the side wall portion in the bowl shape (this embodiment). 6 in the form) are provided.

  The attraction air mixing unit 7 is a location where air flowing in from the adjacent attraction air suction port 6 mixes, that is, an internal space in a bowl shape. Specifically, the internal space from the surface including the top surface of the pedestal 3 to the first outlet 5 is added to the space surrounded by the inner peripheral side of the side wall of the housing 2 and the outer peripheral side of the pedestal 3. Refers to the area.

  The attraction air outlet 8 is provided as a circular plane inside the first outlet 5. Here, the inside means the central axis 50 side with respect to the inner peripheral edge of the first outlet 5.

  The air guide portion 9 includes an auxiliary air outlet 10 and is a space inside the side wall. The space inside the side wall here means the inside of the thickness of the side wall, that is, the air guide portion 9 is formed in a substantially donut shape along the side wall. Further, the air guide portion 9 has an attraction air suction port 6 extending substantially perpendicular to the air blowing direction and toward the central axis 50.

  The auxiliary air outlet 10 is provided as an opening toward the induced air mixing unit 7 on the side of the first air outlet 5 with respect to the air inlet 6 and on the inner peripheral side of the side wall on the path of the air guide 9. Yes.

  As described above, the pedestal portion 3 has a truncated cone shape and is formed so as to protrude from the bottom surface of the housing 2 toward the attracting air mixing portion 7.

  The sub-housing 4 is provided with a suction port 11 on a cylindrical side surface, and the top surface communicates with the high-pressure air generating means inside the housing 2. The suction port 11 is configured by providing a plurality of slit-shaped openings having the same shape.

  Then, the internal structure of the air blower 1 and operation | movement of each part are demonstrated in detail using FIG. FIG. 3 is a cross-sectional view of the blower.

  As shown in FIG. 3, high-pressure air generating means 12 is provided in the internal space of the housing 2.

  The high pressure air generation means 12 includes an impeller 13 and a motor 14.

  The impeller 13 is connected to the rotating shaft of the motor 14.

  The motor 14 is provided in the pedestal portion 3, and electricity is supplied when power is drawn from the outside of the blower 1.

  By operating the motor 14 and rotating the impeller 13, the high pressure air generating means 12 compresses the air taken in from the suction port 11 and generates high pressure air 15.

  High-pressure air 15 generated by operating the high-pressure air generating means 12 flows through a first air passage communicating from the suction port 11 through the impeller 13 and the air guide portion 9 to the first air outlet 5. That is, in FIG. 3, it is an air path which shows the flow of the high pressure air 15, Comprising: The part in the air blower 1 becomes the above-mentioned 1st air path.

  The attraction air 16 is attracted to the high-pressure air 15 discharged from the first air outlet 5 and is taken into the blower 1 from the attraction air suction port 6. And the attraction air 16 flows through the 2nd wind path connected to the attraction air blower outlet 8 via the attraction air mixing part 7 from the attraction air suction inlet 6, and is discharged | emitted from the attraction air blower outlet 8. FIG. That is, in FIG. 3, it is an air path which shows the flow of the attraction air 16, Comprising: The part in the air blower 1 becomes the above-mentioned 2nd air path.

  The auxiliary air outlet 10 blows out the high-pressure branch air 17 at an angle of 45 ° with respect to the air outlet direction of the first air outlet 5. The high-pressure branch air 17 is a part of the air branched from the high-pressure air 15 in the middle of the air guide section 9 and is blown out toward the attraction air mixing section 7.

  FIG. 4 is a side sectional view (a) of a conventional air blower in which the induction air suction port 6 is narrowed, and the air blower of the first embodiment in which the induction air suction port 6 is narrowed. It is a sectional side view (b) of this. FIG. 5 is a comparative schematic view of speed distribution at a position away from the blower at a short distance. 5 represents the speed distribution on the measurement surface 51a of the blower shown in FIG. 4A, and the solid line 20 represents the speed distribution on the measurement surface 51b of the blower shown in FIG. 4B. Represent. 4 and FIG. 5, the degree of narrowing of the attraction air suction port 6 is the same, that is, all the structures and design values other than the presence or absence of the auxiliary air outlet 10 are the same. The measurement surface 51a and the measurement surface 51b are provided at a short distance of 50 cm from the first air outlet of the conventional blower and the first air outlet 5 of the air blower of the first embodiment. . The intersections of the measurement surface 51a and the central axis 53a and the intersections of the measurement surface 51b and the central axis 53b are defined as an origin 52a and an origin 52b, respectively.

  As shown in FIG. 4A, in the conventional air blower in which the induced air suction port 6 is narrowed, the air volume of the induced air 16 is reduced, and the second air passage and the downstream region of the second air passage. Negative pressure region 18a is formed. Therefore, the high-pressure air 15 blown out from the first blowout port is abruptly drifted toward the negative pressure region 18a, and the air flow concentrated in the vicinity of the central shaft 53a flows in the downstream direction. As a result, as shown by the dotted line 19 in FIG. 5, the user on the measurement surface 51a can enjoy only the narrow air blow around the origin 52a.

  However, in the case of the blower 1 shown above, as shown in FIG. 4B, the high-pressure branch air 17 blown out from the auxiliary air outlet 10 in the operating state is the second air passage and the downstream region of the second air passage. Suppresses the negative pressure region 18b generated in As a result, the degree of deflection of the high-pressure air 15 can be suppressed by reducing the negative pressure in the negative pressure region 18b. Moreover, inflow of the attraction air 16 is accelerated | stimulated by suppression of the negative pressure area | region 18b. As a result, as shown by the solid line 20 in FIG. 5, it is possible to expand the air blowing range based on the origin 52 b toward the user on the measurement surface 51 b.

  In addition, in this Embodiment, although the blowing direction of the auxiliary blower outlet 10 is comprised so that it may have an angle of 45 degrees and the center axis | shaft 53b direction with respect to the blowing direction of the 1st blower outlet 5, it is comprised. Even if the blowing direction of 10 has an angle of 45 ° or more and less than 90 ° or 90 ° with respect to the blowing direction of the first blower outlet 5, a suppressing effect can be obtained. Thereby, the high pressure branch air 17 blown out from the auxiliary air outlet 10 can suppress the negative pressure region 18a generated in the second air passage and the downstream region of the second air passage in a wider range. The degree of deflection of the high-pressure air 15 can be suppressed by reducing the negative pressure in the negative pressure region 18b.

  In addition, in this Embodiment, although the auxiliary blower outlet 10 has a width | variety of about 2.5 mm and is formed in cyclic | annular form, it is suitable according to the size of the air blower by adjusting the area of the auxiliary blower outlet 10 It is desirable to set the air volume balance between the high pressure air 15 and the high pressure branch air 17. Moreover, although the auxiliary blower outlet 10 is provided in the substantially intermediate | middle position of the 1st blower outlet 5 and the attraction air suction inlet 6, by providing near the attraction air suction inlet 6 from an intermediate position, the attraction air of the attraction air 16 is provided. The amount of inflow to the suction port 6 can be increased. Thereby, the total air volume which the air blower 1 blows off increases, and it can blow with a large air volume though it is small.

  Moreover, in this Embodiment, the base part 3 which protruded toward the attraction air mixing part 7 is provided, the motor 14 is provided in the base part 3, the motor 14 is provided with the impeller 13, and this impeller exit The distance from the first outlet 5 is shortened. As a result, the blower 1 can be miniaturized and the impeller 13 can be used under a low pressure by suppressing the pressure loss in the first air passage. Energy saving. However, there are no restrictions on the presence or absence of the pedestal 3 and the positions of the impeller 13 and the motor 14.

  Further, in the present embodiment, the housing 2 is formed in a bowl shape, the pedestal portion 3 is formed in a truncated cone, and the sub-housing 4 is formed in a cylindrical shape, but these shapes are not particularly limited.

  In the present embodiment, a plurality of slit-shaped openings having the same shape are provided as the suction port. However, if a sufficient amount of suction air is secured, the area, shape, and number of the suction ports 11 are particularly limited. There is no.

  Moreover, in this Embodiment, although the 1st blower outlet 5 is provided in circular shape, there is no restriction | limiting in particular in the shape of the 1st blower outlet 5. FIG. For example, it may be a triangle, a rectangle, a polygon, an ellipse, or the like.

  Moreover, although the 1st blower outlet 5 is provided in cyclic | annular form, the cyclic | annular said in this Embodiment does not indicate a perfect cyclic | annular form without a break. Even if the annular portion (first air outlet) is partially interrupted due to design restrictions or design problems, there is no problem as long as the structure can attract air. However, a more efficient attraction of the attraction air 16 can be expected by using a complete ring shape.

  In addition, although the 1st blower outlet 5 is 2.5 mm in slit shape, there is no restriction | limiting in particular in the width | variety of the 1st blower outlet 5. FIG. In other words, the slit shape is not necessarily required as long as air can be attracted.

  Moreover, in this Embodiment, although the impeller 13 and the motor 14 are provided as the high pressure air generation means 12, there is no restriction | limiting in particular in the high pressure air generation means 12, A ventilation means of various shapes can be utilized.

  The blower according to the present invention is useful as a blower that can blow a wide range of air toward a user at a short distance.

DESCRIPTION OF SYMBOLS 1 Blower 2 Housing | casing 3 Base part 4 Sub-casing 5 1st blower outlet 6 Attracting air inlet 7 Inductive air mixing part 8 Attracting air outlet 9 Air guide part 10 Auxiliary outlet 11 Inlet 12 High pressure air generation means 13 Impeller 14 Motor 15 High pressure air 16 Attracting air 17 High pressure branch air 18a, 18b Negative pressure area 19 Dotted line 20 Solid line 50 Central axes 51a, 51b Measurement surfaces 52a, 52b Origins 53a, 53b Central axes

Claims (4)

A suction port for taking in air;
High-pressure air generating means for generating high-pressure air by compressing air taken from the suction port;
A first outlet for blowing out the high-pressure air;
An air guide section for guiding the high-pressure air from the high-pressure air generating means to the first air outlet;
A first air passage communicating the suction port, the high-pressure air generating means, the air guide portion, and the first air outlet;
A plurality of attracting air suction ports that are formed by through holes penetrating the air guide portion in a direction perpendicular to the blowing direction of the first blower outlet, and that draw air into the air blown out from the first blower outlet;
An attraction air mixing unit that mixes air sucked from the plurality of attraction air inlets;
An attraction air outlet for blowing out the air mixed in the attraction air mixing unit;
A second air passage communicating the attraction air inlet, the attraction air mixing unit, and the attraction air outlet;
An auxiliary air outlet that blows out a part of the high-pressure air on the side wall of the air guide portion that is sandwiched between the first air outlet and the induced air suction port in the first air passage; Blower. The blower device according to claim 1, wherein a blowing direction of the auxiliary blowing outlet has an inclination in a blowing direction of the first blowing outlet. The blower according to claim 2, wherein a blowing direction of the auxiliary blowing outlet has an angle of 45 ° or more and less than 90 ° with respect to the blowing direction of the first blowing outlet. The blower device according to claim 1, wherein a blowing direction of the auxiliary blowing outlet has an angle of 90 ° with respect to a blowing direction of the first blowing outlet.

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