JP2015117643A - Blower device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blower device capable of achieving an airflow having temporal and spatial fluctuation and capable of improving comfort, in the blower device used for decreasing a feeling temperature by a direct airflow and for circulating indoor air.SOLUTION: A blower device includes: a high pressure air generating part 13; and at least two cylindrical ducts 15 having nozzles 14 for fluctuating a direction of air to be blown out. The nozzle 14 is arranged in a longitudinal direction on a side surface of the cylindrical duct 15. In two adjacent cylindrical ducts 15 out of the at least two cylindrical ducts 15, axes in the arrangement directions of the nozzles 14 are configured to be intersected with each other at a right angle or at an acute angle. Thus, timings of fluctuating air blown out of the nozzles 14 colliding with each other are shifted a little in the axial directions of the nozzles 14, so that fluctuation can be generated not only in the fluctuation directions blown out of the nozzles 14 but also in the axial directions of the nozzles 14. Thus, the blower can be acquired which can achieve an air flow having temporal and spatial fluctuation, and which has improved comfort.

Description

  The present invention relates to an air blower such as a fan or a ceiling fan that is installed on a ceiling, wall, or floor surface in a living room and is used for reducing the temperature of sensation caused by direct airflow or circulating the air in the room.

  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. 5 and 6.

  FIG. 5 is a projection view of the blower assembly 100 as viewed from the front, and FIG. 6 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, because the nozzle is closed in an annular shape, the airflow blown out from here has a high-speed wind speed distribution in a closed annular shape. Since the wind speed distribution can be changed by changing the shape of the ring, a spatially fluctuating air flow can be generated, but since the air flow is uniform in time, There was a problem that an air flow with fluctuation could not be generated.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a blower that can easily realize an air flow that fluctuates spatially and temporally.

  In order to achieve this object, the present invention provides a suction port for taking air into the main body, an impeller provided in communication with the suction port, and a motor for driving the impeller. A blower provided with at least two tubular ducts provided in communication with the generating section and the high-pressure air generating section and having a nozzle that swings the direction of the blown-out air, wherein the nozzle is the tubular The two cylindrical ducts adjacent to each other among the at least two cylindrical ducts are arranged in a longitudinal direction on a side surface of the duct, and the axes of the nozzle arrangement directions intersect each other at right angles or acute angles, The blower is characterized in that at least a part of the air blown out from the nozzle collides at a position away from the surface including the axis of the nozzle in the air blowing direction. It is intended to achieve that.

  According to the present invention, a suction port for taking air into the main body, an impeller provided in communication with the suction port, and a high-pressure air generation unit configured by a motor for driving the impeller, the high-pressure air generation Since the air blower includes at least two cylindrical ducts that are provided in communication with the unit and have a nozzle that oscillates the direction of the air to be blown out. Fluctuations can be generated and the distance between adjacent nozzles is close on the side close to the intersection of the axes in the nozzle arrangement direction, and the distance on the opposite side is long. The distance until the collision is close to the plane including the nozzle axis on the side close to the intersection of the axes, and farther on the opposite side, so that the timing of the collision of the oscillating air slightly deviates in the axial direction of the nozzle. Thus, fluctuations can be generated not only in the direction in which the air blown from the nozzles oscillates but also in the axial direction of the nozzles, and due to temporal and spatial air fluctuations, It is possible to obtain an effect that a soft airflow can be generated by the rules and the comfort of the airflow can be enhanced.

The perspective view of the air blower of Embodiment 1 of this invention The block diagram which shows the cross section of the air blower of Embodiment 1 of this invention Sectional drawing of the duct of the air blower of Embodiment 1 of this invention The perspective view of the air blower of Embodiment 2 of this invention Front view showing an example of conventional technology Sectional drawing which shows an example of a prior art

  The blower device according to claim 1 of the present invention is a high-pressure air generating unit configured by a suction port for taking air into a main body, an impeller provided in communication with the suction port, and a motor for driving the impeller. And a blower provided with at least two cylindrical ducts provided in communication with the high-pressure air generator and having nozzles that swing the direction of the blown-out air, wherein the nozzles are the cylindrical ducts The two adjacent cylindrical ducts of the at least two cylindrical ducts are arranged in the longitudinal direction on the side surfaces of the nozzles, and the axes of the nozzle arrangement directions intersect each other at right angles or acute angles. At least a part of the blown-out air collides at a position away from the surface including the axis of the nozzle in a direction in which the air is blown out. As a result, the fluctuation of the air can be generated by the collision of the oscillating air, and the distance between the adjacent nozzles is close on the side close to the intersection of the axes in the nozzle arrangement direction, and the distance on the opposite side. The distance until the vibrating air that blows out from the adjacent nozzle collides is close to the plane containing the axis of the nozzle on the side close to the intersection of the axes, and far away on the opposite side. The timing of the collision will be gradually shifted in the axial direction of the nozzle, and fluctuations can be generated not only in the direction in which the air blown from the nozzle swings, but also in the axial direction of the nozzle. Spatial air fluctuations can generate an irregular and soft airflow that is close to the natural wind, improving the comfort of the airflow.

  In addition, if there is a user at a position that intersects the space where the airflow collides, the airflow that is relatively small fluctuations hits the side closer to the nozzle than the space where the airflow collides, and the fluctuation farther from the nozzle than the space that collides is large As a soft airflow hits, the user can be exposed to different airflows at different parts of the body according to his / her preference, and the comfort can be enhanced.

  Moreover, the air blower according to claim 2 of the present invention is provided with a movable mechanism that rotates the cylindrical duct in the plane at an end of the cylindrical duct on the high-pressure air generation unit side, and the shaft forms the shaft. You may make it the structure which can change an angle. As a result, the distance between the adjacent nozzles can be varied, so that the user can arbitrarily change the distance until the oscillating air blown from the adjacent nozzles collides with the position where the user is located. In addition, there is an effect that it is possible to blow a comfortable airflow.

  Moreover, the air blower according to claim 3 of the present invention may be configured such that the nozzle is provided with a fluid element that blows out high-pressure air as an air current that swings. This eliminates the need for a movable mechanism for generating an oscillating airflow, so that the movable mechanism does not fail, and it is possible to blow an oscillating airflow stably for a long period of time. Play.

  Moreover, the air blower according to claim 4 of the present invention is configured such that three or more of the nozzles are radially arranged at the same angle toward the same surface side and are rotated by a rotation mechanism arranged at the radial center portion. Good. As a result, it is possible to blow air with less bias over the entire surface without biasing the air volume only in the vicinity where the vibrating air blown out from the adjacent nozzle collides, so that a comfortable air flow with fluctuations over a wide range is obtained. There is an effect that it becomes possible.

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

(Embodiment 1)
FIG. 1 is a perspective view of the blower 11. As shown in FIG. 1, the blower 11 has two cylinders each having a suction port 12, a high-pressure air generation unit 13, and a nozzle 14 that is provided in communication with the high-pressure air generation unit 13 and swings the direction of the blown-out air. A duct 15 is provided. That is, the nozzles 14a and 14b are provided as the nozzles 14 in the ducts 15a and 15b as the cylindrical ducts 15, respectively. Here, the high-pressure air indicates air at atmospheric pressure or higher.

  The nozzle 14 is arranged in the longitudinal direction on the side surface of the cylindrical duct 15, and the two adjacent ducts 15a and 15b are arranged such that the axis a and the axis b in the arrangement direction of the nozzle 14a and the nozzle 14b are perpendicular or acute to each other. It is arranged to intersect.

  FIG. 2 is a cross-sectional configuration diagram of the blower 11 of FIG. As shown in FIG. 2, the high pressure air generator 13 includes a centrifugal impeller 16 and a motor 17 for driving the centrifugal impeller 16.

  According to such a configuration, the air sucked from the suction port 12 is increased in pressure by the high-pressure air generating unit 13 and discharged from the nozzle 14 as swinging air, thereby including the axes a and b of the nozzle 14. At a position distant from the plane B in the air blowing direction, a part of the swinging air discharged from one nozzle 14a and a part of the swinging air discharged from the other nozzle 14b collide. .

  At this time, since the distance between the adjacent nozzles 14 is close on the side close to the intersection of the axis a and the axis b of the nozzle 14 and the distance is long on the opposite side, the oscillating air blown from the adjacent nozzle 14 collides. Is close to the plane B including the axis a and the axis b of the nozzle 14 on the side close to the intersection of the axes a and b, and is farther on the side far from the intersection, so the axis a and the axis b of the nozzle 14 are included. A collision space C that is a surface space inclined with respect to the plane B is formed. In this way, the timing at which the oscillating air collides is gradually shifted in the axial direction of the nozzle 14, so that fluctuation occurs not only in the oscillating direction blown from the nozzle 14 but also in the axial direction of the nozzle 14. Due to temporal and spatial fluctuations in air, it is possible to generate an irregular and soft airflow that is close to natural wind, and to improve the comfort of the airflow.

  Note that the spatially fluctuating airflow means an airflow having a nonuniform wind speed distribution in the axial direction of the nozzle 14 in a plane parallel to the plane B in front of the nozzle 14 for a certain period of time.

  Hereinafter, the airflow with fluctuation will be described in detail.

  In the air blower in which the axis a and the axis b of the nozzle 14 are arranged in parallel, the air discharged from the nozzle 14a and the nozzle 14b has a uniform wind speed in the axial direction on a plane parallel to the plane B in front of the nozzle 14. Even if the air discharged from the nozzles 14a and 14b collides and fluctuates, the airflow collides at the same timing in the axial direction. Therefore, the airflow is uniform in the axial direction. There is no change.

  In the present embodiment, the air immediately after being discharged from the nozzle 14a and the nozzle 14b is an air flow having a uniform wind speed distribution in the axial direction of the axis 14b of the nozzle 14; Since the collision occurs at a position farther from the plane B in the axial direction from the intersection of the nozzles 14, the wind speed changes at the point where the plane parallel to the plane B in front of the nozzle 14 intersects the collision space C. In a plane parallel to the front plane B, an airflow after the collision and an airflow before the collision exist, and the airflow with fluctuation having a nonuniform wind speed distribution in the axial direction is obtained.

  Moreover, the air flow with fluctuation in time means an air flow in which the above-described wind speed distribution changes with time.

  Further, when the user is at a position that intersects the collision space C, an airflow with relatively small fluctuation hits the side closer to the nozzle 14 than the collision space C, and the fluctuation farther from the nozzle 14 than the collision space C has a large fluctuation. The user can be exposed to different airflows at different parts of the body according to his / her preference, such as a soft airflow, and comfort can be enhanced.

  In the present embodiment, two nozzles 14 are provided, but the effect can be obtained if the number and arrangement are such that some of the oscillating air discharged from each nozzle 14 collides.

  In addition, a movable mechanism 18 that rotates the cylindrical duct 15 in the plane B is provided at the end of the cylindrical duct 15 on the high-pressure air generating unit 13 side so that the angle formed by the axes a and b can be varied. Also good.

  With such a configuration, since the distance between the adjacent nozzles 14 can be varied, the user can arbitrarily change the distance until the oscillating air blown from the adjacent nozzles 14 collides. It becomes possible to blow a comfortable airflow according to the position where the user is.

  Although the movable mechanism 18 is a bellows in the embodiment, it may be a mechanism that automatically rotates by attaching a motor or the like, and the cylindrical duct 15 is rotated around the movable mechanism 18 of the cylindrical duct 15. It is sufficient that the angle formed by the axis a and the axis b of the nozzle 14 can be changed.

  3, the nozzle 14 may be configured to include a fluid element 19 that blows out high-pressure air as an air current that oscillates, as illustrated in a cross-sectional configuration diagram of the cylindrical duct 15 in the plane D.

  With such a configuration, there is no need for a movable mechanism such as a swing mechanism of the cylindrical duct 15 or a louver mechanism of the nozzle 14 for generating a oscillating air flow, so that the failure of the movable mechanism does not occur. There is an effect that it is possible to blow an air current that oscillates stably for a long time.

  The expansion angle 21 of the air outlet 20 of the fluid element 19 is preferably about 20 to 45 degrees because stable oscillation of the airflow is obtained, and the length of the circulation air passage 22 is about 100 to 1000 mm. This is desirable because the oscillation frequency can be experienced. At this time, the vibration frequency is preferably about 1 Hz to 200 Hz because vibrations, that is, the presence or absence of a direct airflow can be experienced. Here, the cycle in which the flow direction of the airflow is switched when the relation between the vibration frequencies of the airflows of the respective cylindrical ducts 15 is not an integral multiple (for example, in the case of three nozzles, 20 Hz, 40 Hz, 80 Hz, etc.). By shifting, it is possible to suppress the vibration sound of the airflow generated when switching is performed, and it is desirable because the effect of making the vibration sound difficult to hear is great.

(Embodiment 2)
4, the same components as those in FIGS. 1, 2, and 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 4 is a perspective view of the blower device 41. The blower device 41 has a configuration in which four nozzles 14 are radially arranged at an equal angle and rotated by a rotation mechanism 42 arranged in a radial center portion.

  With this configuration, the air sucked from the suction port 12 is increased in pressure by the high-pressure air generator 13 and discharged from the four nozzles 14 as oscillating air. At that time, the oscillating air blown out from the adjacent nozzles 14 collides and becomes an air current with fluctuation, but the air volume tends to concentrate only in the space where the collision occurs. By rotating the nozzle 14 around the rotation mechanism 42, it is possible to blow air over the entire surface, so that an irregular and soft airflow that is close to natural wind with temporal and spatial air fluctuations over a wide range. The air can be blown and the comfort of the airflow can be increased.

  In the present embodiment, the number of nozzles 14 is four. However, the effect can be obtained as long as a part of the oscillating air discharged from each nozzle 14 collides.

  The air blower according to the present invention eliminates anxiety due to contact by including the impeller, and the nozzle configuration using the fluid element technology can easily realize an air flow that fluctuates spatially and temporally. Since it can be improved, it is useful as various blower devices that are installed on the ceiling or wall of a living room and used to reduce the temperature of sensation due to direct airflow and to circulate indoor air.

DESCRIPTION OF SYMBOLS 11 Blower 12 Inlet 13 High pressure air generating part 14 Nozzle 14a Nozzle 14b Nozzle 15 Cylindrical duct 15a Duct 15b Duct 16 Centrifugal impeller 17 Motor 18 Movable mechanism 19 Fluid element 20 Outlet 21 Enlarged angle 22 Circulating air path 41 Device 42 Rotating mechanism 100 Blower assembly 101 Annular nozzle 102 Central 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 suction port for taking air into the main body, an impeller provided in communication with the suction port, and a high-pressure air generation unit composed of a motor for driving the impeller, and provided in communication with the high-pressure air generation unit The blower includes at least two cylindrical ducts having nozzles that swing the direction of the blown-out air, wherein the nozzles are arranged in the longitudinal direction on the side surfaces of the cylindrical ducts, and the at least 2 Two adjacent cylindrical ducts out of two cylindrical ducts have axes of the nozzle arrangement direction intersecting each other at a right angle or an acute angle, and at least a part of the air blown from each nozzle is the axis of the nozzle. The air blower characterized by colliding in the position away from the surface containing air in the direction which blows off air. The blower according to claim 1, further comprising a movable mechanism that rotates the cylindrical duct in the plane at an end of the cylindrical duct on the high-pressure air generation unit side, and varies an angle formed by the shaft. The blower according to claim 1, wherein the nozzle includes a fluid element that blows out high-pressure air as an air current that swings. 4. The air blower according to claim 1, wherein three or more nozzles are arranged radially at an equal angle toward the same surface and are rotated by a rotation mechanism arranged at the radial center portion. 5. apparatus.

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