JP5945713B2 - Blower - Google Patents

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 is a blower device including a high-pressure air generation unit and a plurality of nozzle units, wherein the high-pressure air generation unit includes a suction port for taking air into the box, An impeller for generating air and a high-pressure air generating means including a motor for driving the impeller, and the plurality of nozzle units are fluid element nozzle units for blowing out high-pressure air as an air flow; A cylindrical duct that guides the high-pressure air generated in the high-pressure air generation unit to the fluid element nozzle unit, and the fluid element nozzle unit includes an inflow port through which an airflow flows, and a blowout port that expands outward. The element main flow path communicating with the outlet from the inlet, and a circulation air passage, the cross section in the direction perpendicular to the air flow of the inlet, the outlet and the element main flow path is substantially rectangular, Circulating wind Is branched from one side on the long side of the element main channel and communicates with the surface on the long side of the element main channel on the opposite side, and the air flow blown out from the outlet is directed in the short side direction of the element main channel The duct has a duct connecting means for connecting the ducts, and the duct connecting means opens the outlet in the same direction to connect a plurality of the nozzle units. Each of which blows an air flow from the fluid element nozzle portion to the front of the air outlet , and at least one of the nozzle units blows an air flow having a frequency different from that of the other nozzle units. This achieves the intended purpose.

According to the present invention, there is provided a blower device including a high-pressure air generation unit and a plurality of nozzle units, wherein the high-pressure air generation unit includes a suction port for taking air into a box and an impeller for generating high-pressure air. And a high-pressure air generating means including a motor for driving the impeller, and the plurality of nozzle units include a fluid element nozzle portion that blows out high-pressure air as an air flow, and a high-pressure air generated in the high-pressure air generation portion. A cylindrical duct that guides air to the fluid element nozzle part, and the fluid element nozzle part includes an inflow port through which an airflow flows, a blowout port that expands outward, and the blowout port from the inflow port. The element main flow path that communicates with the circulation air path, and the cross section in the direction perpendicular to the air flow of the inlet, the outlet, and the element main flow path is substantially rectangular, and the circulation air path is the element main flow Long side of the road Branching from one side and communicating with the surface on the long side of the element main channel on the opposite side, the air flow blown out from the outlet is vibrated in the short side direction of the element main channel, has a duct connecting means for connecting the ducts with each other, the nozzle unit opens the air outlet in the same direction by the duct connection means connecting a plurality, wherein the nozzle unit includes blowing from said each of the fluid elements nozzle unit An air current is blown out to the front of the mouth , and at least one of the nozzle units blows out an air current having a frequency different from that of the other nozzle units. Can be vibrated in the short side direction of the element main flow path, and the frequency of the air flow to be blown out differs among the plurality of nozzle units. It can be generated an air flow with a spatial, temporal fluctuations, thereby enhancing comfort.

  Furthermore, since the frequency of the blown-out airflow differs among the plurality of nozzle units, amplification of the vibration sound of the airflow that occurs when the blowing direction is switched can be suppressed.

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 The block diagram which shows the cross section of the nozzle unit of the air blower of Embodiment 1 of this invention The block diagram which shows the cross section of the nozzle unit of the air blower of Embodiment 1 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 blower device including a high-pressure air generation unit and a plurality of nozzle units, and the high-pressure air generation unit includes a suction port for taking air into the box, and high-pressure air. An impeller for generating and a high-pressure air generating means having a motor for driving the impeller, wherein the plurality of nozzle units are a fluid element nozzle section for blowing out high-pressure air as an air flow; and the high-pressure air A cylindrical duct that guides the high-pressure air generated in the generation unit to the fluid element nozzle unit. The fluid element nozzle unit includes an inflow port through which an airflow flows, an outlet port that expands outward, and the flow rate. An element main flow path communicating with the outlet from the inlet, and a circulation air passage, and the cross section perpendicular to the air flow of the inlet, the outlet, and the element main flow path is substantially rectangular, The road Branching from one side on the long side of the child main channel and communicating with the surface on the long side of the element main channel on the opposite side to vibrate the air flow blown from the outlet in the short side direction of the element main channel The duct has duct connecting means for connecting the ducts, and the duct connecting means opens the outlet in the same direction to connect a plurality of the nozzle units. An air flow is blown out from the fluid element nozzle portion to the front of the blow-out port , and at least one of the nozzle units blows out an air flow having a frequency different from that of the other nozzle units. As a result, the air flow can be vibrated in the short side direction of the element main flow path by the fluid element nozzle part, and the frequency of the air flow to be blown out differs among the plurality of nozzle units. It is possible to generate an air current that fluctuates in terms of time and time, and the comfort can be enhanced.

  In addition, since the frequency of the airflow to be blown out differs among the plurality of nozzle units, the generation time interval of the vibration sound of the airflow generated from the plurality of nozzle units is not amplified because it is shifted, and as a result, the vibration sound of the airflow is reduced, It is possible to make it difficult to hear and enhance comfort. Here, as an effect of making it difficult to hear the vibration sound of the airflow, it is preferable to generate airflows having different frequencies from the respective nozzle units because the effect is great.

  Further, since the airflow can be vibrated in the short side direction of the element main flow path by the fluid element nozzle portion, an airflow having a large wind speed can be sent over a wide range with less energy. Here, high-pressure air refers to air at atmospheric pressure or higher.

  The expansion angle of the blowout port that expands toward the outside of at least one nozzle unit is different from the other nozzle units, and the blowout is performed by making the expansion angle of the blowout port different. Since the frequency of the airflow can be changed, the frequency of the airflow that is blown out can be made different among multiple nozzle units, and a spatially and temporally fluctuating airflow can be generated. The vibration sound of the airflow generated from the unit is mixed, making it difficult to hear the vibration sound of the airflow and enhancing the comfort.

  In addition, since the airflow of arbitrary spread can be sent from each nozzle unit, it is possible to send airflow only to the necessary range by combining nozzle units of different air blowing ranges and realizing airflow of arbitrary wind speed distribution, so high pressure The amount of high-pressure air generated in the air generating means can be reduced, and energy saving can be improved. Here, the larger the enlargement angle, the smaller the frequency.

  Further, the width of the element main flow path of at least one nozzle unit is different from that of the other nozzle units. By making the width of the element main flow path different, the frequency of the air flow to be blown out can be reduced. Because it can be changed, the frequency of the airflow that is blown out can be made different among multiple nozzle units, and the vibrational sound of the airflow generated from multiple nozzle units can be mixed to make it difficult to hear the vibrational sound of the airflow. Can improve comfort.

  In addition, since the air volume blown out from each nozzle unit is proportional to the width of the element main flow path, the necessary wind speed distribution can be created by combining the nozzle units, and the air flow blown out from the blower is spatially and temporally. It is possible to generate an air current that fluctuates, improving comfort.

  The length of the circulation air path of at least one nozzle unit is different from that of the other nozzle units. By making the length of the circulation air path different, the frequency of the air flow is Since it depends on the length of the circulation air path, the frequency of the blown airflow can be changed, so the frequency of the blown airflow can be made different among multiple nozzle units, and there is fluctuation in space and time. Airflow can be generated, and vibration noises of airflow generated from a plurality of nozzle units are mixed with each other, making it difficult to hear the vibration sounds of the airflow and improving comfort. Here, the longer the circulation air path, the smaller the frequency.

  Further, the cross-sectional area of the circulation air passage of at least one nozzle unit is different from that of the other nozzle units. By making the cross-sectional area of the circulation air passage different, the frequency of the air flow is Since it depends on the cross-sectional area of the circulation air path, the frequency of the air flow to be blown out can be changed, so the frequency of the air flow to be blown out can be made different among multiple nozzle units, and there is fluctuation in space and time. Airflow can be generated, and vibration noises of airflow generated from a plurality of nozzle units are mixed with each other, making it difficult to hear the vibration sounds of the airflow and improving comfort. Here, the smaller the cross-sectional area of the circulating air passage, the smaller the frequency.

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

(Embodiment)
As shown in FIG. 1, the air blower 11 is composed of a high-pressure air generator 12 and a plurality of nozzle units 13a, 13b, 13c, and oscillates an air flow 14 in the direction of the arrow from the nozzle units 13a, 13b, 13c. It blows out while letting it go. Here, high-pressure air refers to air at atmospheric pressure or higher.

  As shown in FIG. 2, the high-pressure air generating unit 12 includes a suction port 16 for taking air into the box 15 and an impeller for generating high-pressure air. 17 and a high-pressure air generating means 19 composed of a motor 18 for driving the impeller.

  3, the nozzle units 13a and 13b include a fluid element nozzle unit 21 for blowing out high-pressure air as an air flow 14, and a high-pressure air generating unit. 12 and a cylindrical duct 20 that communicates with the fluid element nozzle portion 21, and the fluid element nozzle portion 21 is configured to have a substantially rectangular cross-section in the vertical direction with respect to the flow of the air flow 14. 22, an air outlet 23 that expands outward, an element main flow path 24 that communicates from the inlet 22 to the air outlet 23, and an element main flow path 24 that branches off from one side of the long side of the element main flow path 24. A circulation air passage 25 communicating with the surface on the long side is provided to vibrate the air flow 14 blown from the blow-out port 23 in the short side direction of the element main flow path 24.

  At this time, in the nozzle unit 13a and the nozzle unit 13b, the enlargement angle 31b is larger than the enlargement angle 31a, and the element main flow path width 32b is larger than the element main flow path width 32a. The number is small, and the larger the element main channel width, the smaller the frequency. Therefore, the nozzle unit 13b has a smaller frequency.

  Further, as shown in FIG. 4, the nozzle units 13 b and 13 c are configured to have a fluid element nozzle portion 21 that blows out high-pressure air as an air flow 14 and high-pressure air. The generating element 12 and a cylindrical duct 20 that communicates the fluid element nozzle part 21, and the fluid element nozzle part 21 includes an inflow port 22 into which an air current flows, an outlet port 23 that expands outward, The element main flow path 24 communicating with the air outlet 23 from the inlet 22 is provided with a substantially rectangular cross section in a direction perpendicular to the flow of the air flow 14, and is branched from one side of the long side of the element main flow path 24 to the opposite side. A circulation air passage 25 communicating with the surface on the long side of the element main flow path 24 is provided, and the air flow 14 blown from the blowout port 23 is vibrated in the short side direction of the element main flow path 24.

  At this time, in the nozzle unit 13b and the nozzle unit 13c, the length of the circulation air passage is shorter in the nozzle unit 13c, and the circulation air passage width 33b is larger than the circulation air passage width 33a, and the nozzle unit 13b and the nozzle unit 13c. Since the height H (FIG. 2) is the same, the nozzle unit 13c has a larger cross-sectional area of the circulation air passage, and the longer the circulation air passage is, the smaller the frequency becomes. The smaller the cross-sectional area of the air passage, the smaller the frequency, so the nozzle unit 13b has a smaller frequency.

  According to such a configuration, since the frequency of the air flow 14 to be blown out is different between the nozzle units 13a and 13b and the nozzle units 13b and 13c, it is possible to generate the air flow 14 that fluctuates spatially and temporally. The vibration sound of the air flow 14 generated from the nozzle units 13a, 13b, and 13c is mixed, so that the vibration sound of the air flow 14 can be made difficult to hear and the comfort can be improved.

  At this time, it is desirable that the frequency of the air flow 14 of each nozzle unit is set to a frequency at which the respective phases do not match as much as possible because the vibration sound can be made difficult to hear efficiently.

  Further, an expansion angle of the air outlet 23 is preferably about 20 to 45 degrees because the oscillation of the airflow 14 can be stably obtained, and the length of the circulation air passage 25 is about 100 mm to 1000 mm so that the oscillation of the airflow 14 can be experienced. This is desirable because the frequency is as high as possible. Moreover, it can comprise with known resin, metals, such as PP and ABS, as a material which comprises the fluid element nozzle part 21. FIG. 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, if the relationship between the frequency of each airflow is not an integral multiple (for example, 20 Hz, 40 Hz, 80 Hz, etc. in the case of three nozzle units), the cycle of switching the airflow blowing direction shifts, This is desirable because it can suppress the amplification of the vibration sound of the airflow generated when switching, and has a great effect of making the vibration sound difficult to hear.

  Note that the spatially fluctuating airflow means that the air velocity in the height direction of the vertical surface in front of the air outlet for a certain period of time is not uniform, that is, the front of the nozzle unit that blows out airflow having a different frequency from other nozzle units. Means an airflow having a wind speed distribution different from the wind speed in front of other nozzle units.

  In addition, the air flow that fluctuates in time means an air flow in which the wind speed distribution described above changes over time, and in the present invention, the above-described wind speed distribution changes over time without providing a conventional swing mechanism. Can be made.

  As described above, the high-pressure air generating unit and the plurality of nozzle units are provided, and the airflow blown from the outlet is vibrated in the short side direction of the element main flow path, so that at least one nozzle unit blows an airflow having a different frequency from the other nozzle units. By adopting a configuration that allows air flow with a high wind speed to be sent over a wide range with less energy, the air flow blown out from the blower device can generate a spatially and temporally fluctuating airflow in the air blowing area. Since the wind speed distribution is not uniform and changes over time, the comfort of airflow can be enhanced.

  Furthermore, since the generation time interval of the vibration sound of the airflow generated from the plurality of nozzle units is shifted and not amplified, the vibration sound of the airflow is reduced as a result, making it difficult to hear the vibration sound of the airflow. Pleasure can be reduced.

  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 High pressure air generation part 13a Nozzle unit 13b Nozzle unit 13c Nozzle unit 14 Airflow 15 Box 16 Inlet 17 Impeller 18 Motor 19 High pressure air generating means 20 Duct 21 Fluid element nozzle part 22 Inlet 23 Outlet 24 Element Main channel 25 Circulating air channel 31a Enlarged angle 31b Enlarged angle 32a Element main channel width 32b Element main channel width 33a Circulating air channel width 33b Circulating air channel width 100 Blower assembly 101 Annular nozzle 102 Central opening 110 Internal channel 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 (5)

A blower device including a high-pressure air generation unit and a plurality of nozzle units, wherein the high-pressure air generation unit drives a suction port for taking air into a box, an impeller for generating high-pressure air, and the impeller A plurality of nozzle units, a fluid element nozzle section that blows out high pressure air as an air stream, and the fluid element nozzle that generates high pressure air generated by the high pressure air generation section. The fluid element nozzle portion includes an inlet port for airflow, a blowout port that expands outward, and an element main flow path that communicates the blowout port from the inlet port. The air inlet, the outlet, and the element main flow path have a substantially rectangular cross section in a direction perpendicular to the air flow, and the circulation air flow path is on the long side of the element main flow path. Branch from one side It communicates with the surface on the long side of the element main flow path on the opposite side, and vibrates the air flow blown out from the outlet in the short side direction of the element main flow path, and the duct connects the ducts to each other. A plurality of nozzle units connected to each other by opening the outlet in the same direction by the duct connecting means , and each of the nozzle units has an air flow from the fluid element nozzle portion to the front of the outlet. The air blower is characterized in that at least one of the nozzle units blows out an airflow having a frequency different from that of the other nozzle units.
The blower according to claim 1, wherein an expansion angle of an outlet that expands toward the outside of at least one nozzle unit is different from that of the other nozzle units. The blower according to claim 1 or 2, wherein a width of an element main flow path of at least one nozzle unit is different from that of the other nozzle units. The blower according to any one of claims 1 to 3, wherein the length of the circulation air path of at least one nozzle unit is different from that of the other nozzle units. The blower according to any one of claims 1 to 4, wherein a cross-sectional area of the circulation air passage of at least one nozzle unit is different from that of the other nozzle units.

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