JP2019148171A - Blower device - Google Patents

Abstract

To provide a blower device which allows a user to appropriately change the wind range and the wind speed.SOLUTION: A blower device includes a plurality of raised pillars. The pillar includes a blowout port for blowing out high pressure air in the perpendicular direction with respect to the direction in which the pillar is raised, on the side part. The plurality of pillars are arranged with an interval, and an induction air passage is formed in a gap between the adjacent pillars in which an induction airflow induced by a blowout airflow passes. The pillar includes: an upper side blowout pillar which has a blowout port on the upper side in the vertical direction; and a lower side blowout pillar which has a blowout port on the lower side in the vertical direction. Also, a control unit is provided for controlling the airflow blown out from the blowout port. The control unit blows the blowing airflow from the upper side blowout ports and the blowing airflow from the lower side blowout ports by different airflows respectively.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an air blower such as an electric fan that is installed in a living room or outdoors and is used for reducing the temperature of sensation caused by direct air flow or circulating indoor air.

  Conventionally, this type of air blower has an impeller and a motor enclosed in a base that serves as a base, and air is circulated from the annular air blower provided in the upper part of the base so that the air is blown horizontally to the floor surface. 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. 8 and 9.

  FIG. 8 is a front view of the blower assembly 100, and FIG. 9 is a cross-sectional view of the main part of the blower assembly 100. The blower assembly 100 has an annular nozzle 101 that defines a central opening 102. Inside the base 116 of the blower assembly 100, a blower that generates an air flow through the annular nozzle 101 is disposed. In the blower, an impeller (impeller) 130 is connected to a rotating shaft that extends outward from a motor 122 disposed with the motor housing 126, and a diffuser 132 is positioned on the downstream side of the impeller 130. The motor 122 is connected to an electrical connection unit and a power source (not shown), and the user can operate the blower assembly 100 by a plurality of selection buttons 120 shown in FIG.

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

  When the user selects a desired button from among the plurality of selection buttons 120 and the motor 122 is activated, air is sucked 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 squeezed as it enters the mouth 112 and is further squeezed at the outlet 144 of the mouth 112. Due to this restriction, pressure is generated in the annular nozzle 101.

  The air flow thus created overcomes the pressure generated by the restriction and exits through the outlet 144 as a primary air flow. The primary air flow is directed or focused toward the user due to the arrangement of the guide portion 148. The secondary air flow is generated by the suction 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 air blower, since the air blowing direction is always constant and does not change, the air blowing direction and the air blowing range to be blown out are fixed. There was a problem that it could not be changed as appropriate.

  Then, in order to solve the said conventional subject, this invention aims at providing the air blower which changes an air blowing direction, an air blowing range, and an air speed using induced airflow.

  In order to achieve this object, the present invention provides a plurality of raised pillars, and high-pressure air generated in the side part of the pillars in the direction perpendicular to the direction in which the pillars are raised in the high-pressure air generator. The plurality of pillars are arranged with a gap so that the outlets of each pillar are in the same direction, and the air is drawn into the gap between adjacent pillars. An induction air passage through which a flow passes is formed, and the pillar includes an upper outlet pillar provided with an upper outlet on the upper side in the vertical direction and a lower outlet pillar provided with a lower outlet on the lower side in the vertical direction, Furthermore, the control part which controls the airflow ventilated from an upper side blower outlet and a lower side blower outlet is provided, and a control part is a different airflow from the blast airflow from an upper side blower outlet, and the blast airflow from a lower side blower outlet, respectively. Characterized by blowing It is obtained by a blowing device which, thereby is to achieve the intended purpose.

  According to the present invention, the control unit that controls the airflow blown from the blowout port sends the airflow from the upper blowout port and the blown airflow from the lower blowout port with different airflows. Thus, by blowing airflows having different air volumes and wind speeds from the upper and lower blowout pillars, an induced airflow in the ascending direction and the descending direction is generated, and the blowing direction, the blowing range, and the wind speed can be varied. Therefore, the air blower of the present invention can appropriately blow air that can blow an air current of various air blowing directions, air blowing ranges, and wind speeds to obtain a cool feeling preferred by the user, air blow for the purpose of indoor air circulation, and the like. There is an effect that can be.

The front perspective view explaining the outline of the blower of the present invention The perspective view of the air blower of Embodiment 1 Front view of the air blower of the first embodiment (A) Side view of the blower of the first embodiment, (b) Side view of the blower of the first embodiment (A) Side view of the air blower of the first embodiment, (b) Side view of the air blower of the first embodiment, (c) Side view of the air blower of the first embodiment Flowchart diagram of the first embodiment Front view of the air blower of the first embodiment Side view showing an example of conventional technology Side view showing an example of conventional technology

  According to a first aspect of the present invention, a blower according to a first aspect of the present invention includes a plurality of pillars that are erected, and high-pressure air generated by a high-pressure air generator in a direction perpendicular to the direction in which the pillars are erected. The plurality of pillars are arranged with a gap so that the outlets of each pillar are in the same direction, and an induced air flow that is attracted by the blown airflow is provided in the gap between adjacent pillars. An induced air passage is formed, and each pillar includes an upper outlet pillar provided with an upper outlet on the upper side in the vertical direction, and a lower outlet pillar provided with a lower outlet on the lower side in the vertical direction. A control unit that controls the airflow blown from the upper air outlet and the lower air outlet is provided, and the controller blows the airflow from the upper air outlet and the airflow from the lower air outlet by different airflows. Also characterized by It is.

  As a result, induced airflows having different airflow rates and wind speeds in the height direction are generated by blowing airflows having different airflow rates and wind speeds from the upper and lower air outlets, and the airflow direction and airflow range on the downstream side of the air blower are generated. The wind speed can be varied as appropriate. Therefore, the blower of the present invention can blow airflows in various blow directions, blow ranges, and wind speeds, and appropriately selects the fan that the user prefers to obtain a cool feeling, the fan for the purpose of indoor air circulation, and the like. There is an effect that can be done.

  Moreover, a control part may perform control which ventilates a steady wind from an upper side blower outlet, and blows a fluctuation wind from a lower side blower outlet. As a result, when the fluctuation airflow from the lower air outlet has a larger air velocity than the steady air current from the upper air outlet, the surrounding air is drawn in the direction of the air current where the air velocity is large. The flow is directed downward on the fluctuation airflow side. In addition, when the fluctuation airflow from the lower air outlet is lower than the steady airflow from the upper air outlet, the ambient air is drawn in the direction in which the airflow speed is faster, so the flow of air blown from the blower Will head upward on the steady airflow side. Therefore, if the user wants to circulate the room indoors without taking a strong direct wind, it provides a more natural wind to the user by blowing a fluctuating airflow with a speed change or a wind direction change. And can promote indoor air circulation. Therefore, the user can obtain a comfortable and fluctuating wind without feeling uncomfortable stress such as a decrease in body temperature by taking a steady wind for a long time, and can promote indoor air circulation.

  Moreover, a control part is good also as control which ventilates a steady wind from an upper side blower outlet, and does not blow from a lower side blower outlet. As a result, a steady air flow with a high wind speed is blown from the upper part and not from the lower part, so that the air can be circulated more efficiently and the air is agitated without directing the wind directly to the user. It is also possible to suppress unevenness.

  Moreover, a control part is good also as control which ventilates the same fluctuation wind from an upper side blower outlet and a lower side blower outlet so that a phase may differ. As a result, both the upper part and the lower part blow out a fluctuation airflow, so that the fluctuation wind can be felt comfortably and more naturally without feeling uncomfortable stress such as lowering body temperature by taking a steady wind for a long time. The air circulation in the room can be promoted.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings. 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, in order to avoid duplication, the same code | symbol is attached | subjected about the same site | part through all the drawings, and the description after the 2nd is abbreviate | omitted.

(Embodiment 1)
First, the air blower 1 according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of the blower 1 installed in a living room, FIG. 2 is a detailed perspective view of the blower 1, and FIG. 3 is a front view of the blower.

  The blower device 1 blows airflow toward the living room, and as shown in FIG. 1, a plurality of pillars 13 of equal length (6 in the present embodiment) erected from the floor surface that is one wall surface of the living room. Provided). Each pillar 13 has a rectangular cross-sectional shape, and the tops of the plurality of pillars 13 are connected by a top plate 32. In addition, the upper part of the pillar 13 may not be connected with the top plate 32, but the gap | interval of the some pillar 13 may be open | released by upper part. The pillar 13 may protrude downward from the ceiling surface. The pillars 13 may have different lengths and cross-sectional shapes.

  As shown in FIG. 2, among the six pillars 13, two upper blowing pillars 13 a are arranged at the center two, and two are provided on the outer side of the upper blowing pillar 13 a, for a total of four lower blowing pillars 13 b. Is arranged. The upper blowing pillar 13a blows air in a direction perpendicular to the standing direction. On the other hand, the lower outlet pillar 13b includes a blower outlet 5b that blows out air in a direction perpendicular to the standing direction, closer to the housing 2 than the outlet 5a of the upper outlet pillar 13a.

  In the upper outlet pillar 13a, on the upper side from the center part in the height direction, a blower outlet 5a is provided from one end part (hereinafter referred to as the upper end) different from the center part to the casing 2, and in the lower outlet pillar 13b, A blower outlet 5b is provided below the central portion in the height direction, extending from the central portion to the end portion on the casing 2 side (hereinafter referred to as the lower end). Here, although the blower outlet 5a and the blower outlet 5b are the upper half and the lower half of the respective pillars 13, the blower outlet 5a and the blower outlet 5b may be more than half the dimensions of the pillar 13 so as to overlap the center part. In other words, the blower outlet 5a may have a dimension of less than half from the upper end of the upper blower pillar 13a, and the blower outlet 5b may have a dimension of more than half from the lower end of the lower blower pillar 13b. The upper blowing pillar 13a and the lower blowing pillar 13b are provided in the same plane by providing a gap as an induction air passage 6 between adjacent pillars 13 so that the blowing direction of the blowing outlet 5a and the blowing outlet 5b is the same direction. Is placed on top. Here, the same plane indicates a state in which the side surfaces of all the pillars 13 provided with the air outlets 5a and 5b and the side surfaces facing the air outlets 5a and 5b are aligned and aligned.

  Moreover, as shown in FIG. 2, the housing | casing 2 is provided with the suction inlet 7 which takes in air in the side surface facing the blower outlet 5a and the blower outlet 5b. As shown in FIG. 3, three chambers 10 a, 10 b, and 10 c are provided on the inner upper portion of the housing 2 downstream of the outlets of the fans 8, and each chamber 10 has one fan 8. And two pillars 13 communicate with each other. In this embodiment, a combination of one motor, one fan, one chamber, and two pillars is used as one air blow unit. It is good also as a structure which combines.

  In addition, although the space where the fan 8 and the motor 9 are arranged is one space, a partition is provided inside the housing 2 to provide a plurality of spaces, for example, one fan and one motor in the case of the present embodiment. It may be divided into three spaces, and three spaces may be used.

  In addition, a control unit 11 that controls the airflow blown from the air outlet is disposed on the side surface of the housing 2. The control unit 11 controls the airflow blown from the upper blowing pillar 13a and the lower blowing pillar 13b, so that the motor 9b of the fan 8b of the upper blowing pillar 13a, the motors 9a of the fans 8a and 8c of the lower blowing pillar 13b, An electric signal for controlling the rotation speed is transmitted to 9c. These electrical signals are transmitted to each motor 9a, motor 9b, and motor 9c through information calculation processing such as a microprocessor and a memory provided on a circuit board constituting the control unit 11.

  Next, operation | movement of the air blower 1 is demonstrated using FIG.3, FIG.4, FIG.5. 4 and 5 show side views of the blower 1. The control unit 11 blows the airflow from the upper blowing pillar 13a and the airflow from the lower blowing pillar 13b by different airflow controls. When the control unit 11 drives the fan 8a, the fan 8c, the motor 9a, and the motor 9c that communicate with the lower outlet pillar 13b, the fan 8a and the fan 8c rotate, so that the indoor air flows from the suction port 7 to the housing 2. Captured inside. The taken-in air passes through the fans 8a and 8c and flows into the chambers 10a and 10c. The air that has flowed into the chambers 10a and 10c is divided into two lower blowing pillars 13b in the chambers 10a and 10c, passes through the inside of the lower blowing pillars 13b, and is blown into the indoor space from the blowing outlet 5b. Airflow 14 is obtained.

  The control unit 11 blows the airflow from the upper blowing pillar 13a and the airflow from the lower blowing pillar 13b by different airflow controls. The different airflows are airflows having different air speeds and airflows of airflows blown from the upper air outlet 5a and the lower air outlet 5b. In the case of a fluctuation airflow that alternately generates a weak airflow that blows a small airflow and a strong airflow that blows a large airflow, it is possible to blow different airflows by making the phases of fluctuations different. Different airflows can be blown from the upper air outlet 5a and the lower air outlet 5b by appropriately setting the rotation speeds of the motors 9a and 9c. In the present embodiment, in order to blow different airflows from the upper air outlet 5a and the lower air outlet 5b, individual fans 8a and 8c are provided. However, even with a single fan, the upper air outlet is provided. It is also possible to blow different air currents by providing ducts at 5a and the lower outlet 5b, respectively.

  The air outside the induction wind path 6 and the outermost lower blowing pillar 13 b shown in FIG. 3 is attracted by the blowing air flow 14 to become an induced air flow 15. The blown air flow 14 and the induced air flow 15 merge in front of the blowing device 1 in the blowing direction, and a surface air flow having a substantially uniform wind speed can be blown over a wide range.

  Further, as shown in FIG. 3, when the control unit 11 drives the fan 8b and motor 9b communicating with the upper outlet pillar 13a, the fan 8b rotates, so that the indoor air flows from the suction port 7 into the interior of the housing 2. Is taken in. The taken-in air passes through the fan 8b and flows into the chamber 10b. The air that has flowed into the chamber 10 b is branched from the chamber 10 b to the two upper blow-out pillars 13 a, passes through the upper blow-out pillar 13 a, and is blown out into the indoor space from the blow-out opening 5 a to become a blown air flow 14. The blown airflow 14 attracts the air outside the induced airflow path 6 and the outermost lower blowout pillar 13 b to become an induced airflow 15. The blown air flow 14 and the induced air flow 15 are merged in front of the blowing device 1 in the blowing direction, and a surface air flow having a substantially uniform wind speed can be blown over a wide range even above the blowing device 1.

  As shown in FIG. 4, the control unit 11 blows out a steady air flow 22 from the upper air outlet 5a and a fluctuation air flow 23 having fluctuation from the lower air outlet 5b.

  According to such a configuration, as shown in FIG. 4A, the fluctuation airflow 23 and the induced airflow 15 from the lower air outlet 5b are more than the steady airflow 22 and the induced airflow 15 from the upper air outlet 5a. When the air flow velocity is high, the surrounding air is drawn toward the air flow direction where the air flow velocity is high, so that the air flow 24 blown from the blower 1 is directed downward on the fluctuation air flow 23 side.

  As shown in FIG. 4B, when the fluctuation airflow 23 and the induced airflow 15 from the lower air outlet 5b are smaller than the steady airflow 22 and the induced airflow 15 from the upper air outlet 5a, Since ambient air is drawn in a direction in which the air velocity is high, the air flow 24 blown from the blower 1 is directed upward on the steady air flow 22 side. Further, since the fluctuation air flow 23 from the lower air outlet 5b changes in speed with time, the direction of the air flow 24 changes upward or downward in this way.

  By performing motor control that changes the air volume from the upper and lower blow pillars 13 and blows air, it is possible for the user to obtain a cool feeling and to blow air that circulates the room. There is an effect. For example, in spring or autumn, when it is desired to perform indoor air circulation without being exposed to direct strong winds, air flow control as shown in FIG. 4B can be performed. By performing the air flow control as shown in FIG. 4B, a natural wind can be provided to the sitting user by the fluctuation air flow 23 having a speed change. On the other hand, the upper blowout pillar can promote the air circulation in the room by blowing the steady airflow 22 of the steady wind. Therefore, the user can obtain a comfortable fluctuation breeze without feeling uncomfortable stress such as a decrease in body temperature by taking a constant wind for a long time, and can promote indoor air circulation.

  The control unit 11 may perform control such that the fluctuation airflow 23 is always slower or faster than the steady airflow 22. As a result, the air flow 24 blown from the blower 1 is always directed downward or upward.

  In addition, as shown to Fig.5 (a), the control part 11 performs control which blows off the steady air flow 22 from the upper side blower outlet 5a, and control which does not ventilate from the lower side blower outlet 5b may be sufficient. Thereby, for example, when operating the air blower 1 in winter, as shown in FIG. 3, when the control unit 11 drives the motor 9b of the fan 8b communicating with the upper blowout pillar 13a, the fan 8b rotates. Thus, the room air is taken into the housing 2 from the suction port 7. The taken-in air passes through the fan 8b and flows into the chamber 10b. The air that has flowed into the chamber 10b is divided into two upper blowing pillars 5a in the chamber 10b, passes through the inside of the upper blowing pillar 5a, and becomes a blown airflow 14 blown from the upper blowout port 5a to the indoor space. The blown air flow 14 attracts air in the induced wind path formed between the induced wind path 6 formed between the two upper blow pillars 13a and the lower blow pillar 13b adjacent to the upper blow pillar 13a. As a result, an induced airflow 15 is obtained. Accordingly, since the steady air flow 22 is blown from the upper part and not from the lower part, the indoor air temperature is more efficiently circulated and the air is agitated without directing the air directly to the user. Can also be suppressed.

  Further, as shown in FIGS. 5B and 5C, the control unit 11 may perform control to blow the same fluctuation airflow 23 from the upper air outlet 5a and the lower air outlet 5b so that the phases thereof are different. . Furthermore, as shown in FIG. 5B, when the fluctuation airflow 23 and the induced airflow 15 from the lower outlet 5b are smaller than the fluctuation airflow 23 and the induced airflow 15 from the upper outlet 5a, Ambient air is drawn in the direction of airflow with high velocity. Therefore, the air flow 24 blown from the blower 1 is directed upward on the side of the fluctuation airflow 23 from the upper outlet 5a.

  Further, as shown in FIG. 5C, when the fluctuation airflow 23 and the induced airflow 15 from the lower air outlet 5b are larger than the fluctuation airflow 23 and the induced airflow 15 from the upper air outlet 5a, Since the surrounding air is drawn in the direction in which the airflow velocity is high, the air flow 24 blown from the blower 1 is directed downward on the side of the fluctuation airflow 23 of the lower outlet 5b. Further, since each fluctuation air flow 23 changes in speed with time, the direction and speed of the air flow 24 change upward and downward in this way. As a result, unpleasant stress such as a decrease in body temperature due to long-term exposure to steady winds can be felt by blowing a fluctuating airflow having a different phase and speed from both the upper air outlet 5a and the lower air outlet 5b. Therefore, a comfortable fluctuation wind can be obtained, and the indoor air circulation can be promoted. Furthermore, the air moving in the room by blowing the fluctuation airflow 23 from both the upper air outlet 5a and the lower air outlet 5b can make the user feel more natural.

  FIG. 6 is a flowchart, and the control method will be described below. When the user turns on the operation switch in S1 shown in FIG. 6, the blower is turned on, and the user selects the current season with the remote controller of the blower 1, for example (S2). When the season is selected, the microcomputer determines the air blowing mode according to the season (S3, S4), issues an instruction to the motor 8a, the motor 8b, and the motor 8c, and starts air blowing. For example, if the season is determined to be winter, air is blown in the upper airflow constant mode in S5 (an example of the first airflow control), and if the season is determined to be summer, the upper and lower airflows of S6 are both fluctuating. If it is determined that the mode is blown and the season is other than winter or summer, the blow is performed in the upper steady / lower fluctuation wind mode (an example of the first air flow control) in S7. Further, when the user selects, for example, stop of the remote control (S8), all motors are stopped in S9, and air blowing is also stopped in S10. As a result, the user can easily change the air blowing mode with a remote controller or the like according to the season, and can spend in a more comfortable indoor space.

  In addition, you may mount the notch control which can change a ventilation speed with room temperature etc. by providing a temperature sensor. Thereby, the user can obtain a more comfortable feeling by relatively increasing or decreasing the wind speed when the indoor temperature is high and low.

  Although the season is selected by the remote controller, the present temperature, airflow mode, etc. may be assigned to the determination criteria of S3 and S4, not limited to the season.

  As shown in FIG. 7, the blower has a configuration in which an impeller 16 for generating high-pressure air and a fan motor 18 configured by a motor for driving the impeller 16 are provided inside the underfloor 40. But you can. A blower outlet 19 for blowing high-pressure air generated by the fan motor 18 is provided in one direction perpendicular to the direction in which the pillar 13 is erected. The air outlet 19 is provided on the side surface on the short side of the pillar 13, and a duct 20 for guiding high-pressure air generated by the fan motor 18 to the air outlet 19 is provided inside the pillar 13. The number of the ducts 20 is at least as many as the pillars 13. Between the fan motor 18 and the duct 20, chambers 21 a and 21 b for diverting high-pressure air to the ducts 20 of the nozzles 13 are provided under the floor 40.

  Further, as shown in FIG. 7, the high-pressure air generated by the fan motor 18 is guided to the chamber 21 a through the flow path 12 a for the upper blow-out pillar 13 a under the floor 40 and is divided into the respective ducts 20. . Similarly, the high-pressure air generated by the fan motor 18 is guided to the chamber 21b through the flow path 12b for the lower blowing pillar 13b under the floor 40, and is divided into the respective ducts 20. According to such a configuration, when the blower 1 is operated in accordance with a command from the control unit 11, the fan motor 18 is driven and the impeller 16 is rotated to generate high-pressure air, and the chamber 21a and the chamber 21b The air is diverted to the plurality of ducts 20 and is blown from the upper air outlet 5a and the lower air outlet 5b, and the first air flow control 41 enables each air to be blown. In addition, although it was set as the structure which provides the fan motor 18, a chamber, etc. under the floor 40, it is good also as a structure which provides all or one part in the ceiling back etc., for example.

  Moreover, in this Embodiment, although all the pillars 13 are provided in parallel with the blowing direction, there is no restriction | limiting in particular in the direction and the number of pillars 13. However, as it goes from the center of the pillar 13 to the pillar 13 provided on the outer side, it may be provided at a wide angle so that the air blowing direction is separated from the pillar 13 at the center. As a result, the phenomenon of airflow gathering at the central portion of the blower 1 from the blower 1 to a certain distance is suppressed, and the wind range can be widened.

  In the present embodiment, the number of pillars 13 is six, but there are no particular restrictions on these design values. However, the user can change the width | variety of the air blower 1, the number of the pillars 13, etc. suitably according to space or a design.

  The blower and the blower according to the present invention are useful as a blower that allows the user to change the range of the wind as appropriate.

DESCRIPTION OF SYMBOLS 1 Air blower 2 Case 5a Upper side outlet 5b Lower side outlet 6 Induction air path 7 Suction port 8a Fan 8b Fan 8c Fan 9a Motor 9b Motor 9c Motor 10a Chamber 10b Chamber 10c Chamber 11 Control part 12a Channel 12b Channel 13 Pillar 13a Upper blowing pillar 13b Lower blowing pillar 14 Blowing airflow 15 Attracting airflow 16 Impeller 18 Fan motor 19 Air outlet 20 Duct 21a Chamber 21b Chamber 22 Steady airflow 23 Fluctuating airflow 24 Air flow 32 Top plate 40 Underfloor 122 Motor 124 Air Inlet 126 Motor housing 130 Impeller 132 Diffuser 134 Inlet 136 Outlet 144 Outlet 148 Guide portion

Claims (4)

A plurality of pillars that are erected, and side portions of the pillars, each having a blower outlet that blows out high-pressure air generated by the high-pressure air generation unit in a direction perpendicular to the direction in which the pillars are erected, as a blown airflow to the outside. The plurality of pillars are arranged with a gap so that the outlets of the pillars are in the same direction, and the induced air flow through which the induced air flow induced by the blown airflow passes through the gaps of the adjacent pillars. A road is formed,
The pillar includes an upper outlet pillar provided with an upper outlet on the upper side in the vertical direction and a lower outlet pillar provided with a lower outlet on the lower side in the vertical direction, respectively.
In addition, a control unit that controls the airflow blown from the upper air outlet and the lower air outlet,
The said control part ventilates the ventilation airflow from the said upper side blower outlet, and the ventilation airflow from the said lower side blower outlet by a different airflow, respectively. The blower according to claim 1, wherein the controller blows steady wind from the upper blower outlet and blows fluctuation air from the lower blower outlet. The blower according to claim 1, wherein the control unit blows steady air from the upper air outlet and does not blow air from the lower air outlet. The blower according to claim 1, wherein the control unit blows the same fluctuation wind from the upper blower outlet and the lower blower outlet so as to have different phases.