JP2021152365A - Blower device - Google Patents

Abstract

To provide a blower device that eliminates a feeling of uneasiness due to contact with an impeller, has a low noise and space saving while providing an air flow with an air velocity that is substantially uniform in a wide range.SOLUTION: A fan motor 18 is installed in an underfloor 40 where a nozzle 13 is erected, thereby eliminating a feeling of uneasiness due to contact with an impeller 16 and inhibiting noise emitted from a fan motor 18 from leaking into a living room R. Accordingly, only the nozzle 13 is present in a space of the living room R, thereby inhibiting the space of the living room R from being narrowed.SELECTED DRAWING: Figure 2

Description

The present invention relates to a blower device such as an electric fan which is installed in a living room and is used for reducing the sensible temperature due to direct airflow and circulating air in the room.

As a blower device capable of providing an air flow having a substantially uniform wind speed over a wide range while eliminating anxiety due to contact with the impeller, for example, there is a blower device described in Patent Document 1. This blower stands up from one side of the housing, a fan motor consisting of a suction port for taking in air, an impeller for generating high-pressure air, and a motor for driving the impeller. It is equipped with a plurality of nozzles. The nozzle is provided with an outlet on the side that blows out high-pressure air generated by the fan motor in a direction perpendicular to the direction in which the nozzle is erected. In addition, the nozzle is provided with a duct for guiding high-pressure air to the air outlet. The nozzle is provided with a gap so that the cross section in the vertical direction is vertically long in the blowout direction and the plurality of outlets are flush with each other. The gap forms an attracting air passage for the air that is attracted to the air blown out from the outlet.

By including an impeller, this blower can eliminate the anxiety caused by contact. In addition, since a plurality of nozzles are provided with a gap so that the air attracted by the high-pressure air blown out from the air outlet is not reduced, the high-pressure air blown from the plurality of air outlets and the high pressure from the air outlet are provided. The surface airflow composed of air attracted by the blowing of air can be made into an airflow having a substantially uniform wind speed over a wide range. Further, by making the outlets flush with each other, the airflow to be blown out becomes a surface airflow. Since this surface airflow has a substantially uniform wind speed over a wide area and is linear in the blowing direction, a core region is formed in the center of the surface airflow, so that it has excellent straightness and reaches a long distance with little attenuation of the wind speed. Can be done.

JP-A-2017-115629

However, in the blower device of Patent Document 1, since the housing and the nozzle have an integral structure and the fan motor is housed in the housing, there is a problem that the noise generated by the fan motor is large. Further, the housing becomes larger by the amount of accommodating the fan motor, and as a result, the blower itself becomes larger, so that there is a problem that the space in the living room in which the blower is installed becomes narrower.

The present invention has been made to solve the above problems, and provides a low noise and space-saving air blower while eliminating anxiety caused by contact with an impeller and providing an air flow having a substantially uniform wind speed over a wide range. The purpose is to provide.

In order to achieve this object, the blower device of the present invention is a blower device that generates an air flow inside a specific space, and a plurality of blowers erected from one wall surface constituting the specific space toward the inside of the specific space. A nozzle, a chamber for conveying high-pressure air to each of the plurality of nozzles, and an impeller and a fan motor for sending the high-pressure air to the chamber. Each of the plurality of nozzles has a duct connected to the chamber and an outlet for blowing out the high-pressure air conveyed from the duct. The plurality of nozzles are arranged in parallel with a predetermined gap, and form an air attracting air passage that is attracted to the high-pressure air blown out from the outlet by the gap. The chamber, impeller, and fan motor are arranged inside one wall surface.

Here, the wall surface is a concept that includes not only the wall surface erected from the floor surface to the ceiling surface in the living room but also the floor surface and the ceiling surface of the living room.

According to the air blower of the present invention, since a plurality of nozzles are provided with a gap so that the air attracted by the high-pressure air blown out from the air outlet is not reduced, the air blown from the plurality of air outlets can be used. , The surface airflow composed of air attracted by the air blown out from the air outlet can be made into an airflow having a substantially uniform wind speed over a wide range. Further, by making the outlets flush with each other, the airflow to be blown out can be made a surface airflow. Further, since the fan motor is provided inside the wall surface on which the nozzle is erected, it is possible to eliminate anxiety caused by contact with the impeller, and it is possible to suppress the noise generated by the fan motor from leaking into the living room. Further, since only the nozzle is present in the living room space, it is possible to suppress the narrowing of the living room space. Therefore, it is possible to obtain the effect of eliminating the anxiety caused by the contact with the impeller, providing an air flow having a substantially uniform wind speed over a wide range, and providing a low-noise, space-saving air blower.

It is a perspective view of the blower device which concerns on 1st Embodiment of this invention. (A) is a right side view of the blower, and (b) is a top view of the blower. It is a right side view of the blower device which concerns on 2nd Embodiment of this invention. (A) is a right side view of the blower device according to the third embodiment of the present invention, and (b) is a top view of the blower device. It is a right side view of the blower device which concerns on 4th Embodiment of this invention.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings.

(First Embodiment)
First, the blower 11 according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view of a blower device 11 installed in the living room R, FIG. 2A is a right side view of the blower device 11, and FIG. 2B is a top plate 32 removed. It is a top view of the blower device 11 in a state. Note that FIG. 2A shows a cross section of only the nozzle 13 cut by the surface A shown in FIG.

The blower 11 blows airflow toward the inside of the living room R of the house, and as shown in FIG. 1, a plurality of nozzles 13 of equal length (1) rising from the floor surface 10 which is one wall surface of the living room R ( In this embodiment, 6) are provided. Each nozzle 13 has a rectangular cross-sectional shape, and the upper portions of the plurality of nozzles 13 are connected by a top plate 32. The upper part of the nozzle 13 may not be connected by the top plate 32, and the gaps between the plurality of nozzles 13 may be opened at the upper part. Further, the nozzle 13 may be projected from the ceiling surface.

Inside the floor surface 10 (under the floor) 40, as shown in FIG. 2A, a fan motor 18 composed of an impeller 16 for generating high-pressure air and a motor 17 for driving the impeller 16 is provided. It is provided.

As shown in FIGS. 1 and 2, each nozzle 13 includes an outlet 19 for blowing out high-pressure air generated by the fan motor 18 in one direction perpendicular to the direction in which the nozzle 13 is erected. In the present embodiment, the outlet 19 is provided on the side surface of the nozzle 13 on the short side side. Inside the nozzle 13, a duct 20 for guiding the high-pressure air generated by the fan motor 18 to the outlet 19 is provided. The number of ducts 20 is at least the same as that of the nozzles 13. Between the fan motor 18 and the duct 20, a chamber 21 for distributing high-pressure air to the duct 20 of each nozzle 13 is provided under the floor 40. The high-pressure air generated by the fan motor 18 is guided to the chamber 21 through the flow path 12 under the floor 40, and is distributed to each duct 20 by the chamber 21.

As shown in FIG. 2B, the nozzle 13 has a vertically long cross section in the blowing direction. The plurality of nozzles 13 are provided with a gap facing the side surfaces on the long side so that the outlets 19 are on the same surface, and the gap attracts the airflow to be blown from the outlet 19. An air attracting air passage 22 is formed. In the example of the present embodiment, since the six nozzles 13 are provided, five attraction air passages 22 can be formed in the gaps sandwiched between the nozzles 13, which are smaller than the number of the nozzles 13. Further, as shown in FIG. 2A, a wind direction adjusting rib 24 for adjusting the wind direction in the standing direction of the nozzle 13 is provided in the vicinity of the air outlet 19 in the nozzle 13.

The length of the gap is equal to or greater than the length of the nozzle 13 in the vertical cross section in the direction perpendicular to the blowing direction (width of the nozzle 13) and the length of the nozzle 13 in the standing direction from the floor surface 10. In this embodiment, as an example, the width of the nozzle 13 is 30 mm, the length of the nozzle 13 in the standing direction is 600 mm, the length of the gap is 100 mm, and the blowing direction of the nozzle 13. The case where the length is 200 mm is shown. Further, in the present embodiment, the cross-sectional shape of the nozzle 13 in the vertical direction is a rectangular shape, but it may be vertically long in the blowing direction and may be another shape such as an ellipse.

Here, the plurality of nozzles 13 means two or more. Further, the uniformity of the wind speed focuses on the distribution of the wind speed of the surface airflow 50 in which the blown air flow 25 and the attracted air flow 26, which will be described later, merge, and is viewed in front of the air outlet 19 at a predetermined distance. It indicates that the observed wind speed distribution is within a predetermined range. That is, the minimum wind speed on the plane can be tolerated at least half of the maximum wind speed. Further, high-pressure air means air having an atmospheric pressure or higher.

According to such a configuration, when the blower 11 is operated, the motor 17 is driven and the impeller 16 is rotated to generate high-pressure air, and as shown in the internal flow 23, the chamber 21 is passed through the flow path 12. To. The high-pressure air is divided into a plurality of ducts 20 in the chamber 21, passes through each duct 20, and the blowing direction in the standing direction of the nozzle 13 is adjusted by the wind direction adjusting rib 24 provided near the outlet 19, and the air is blown from the outlet 19. It is blown out and becomes a blown air flow 25.

Then, the blown air flow 25 attracts the air outside the attracting air passage 22 and the outermost nozzle 13, and becomes the attracting air flow 26. The blown air flow 25 and the attracted air flow 26 are merged in front of the blower direction of the blower 11, and a surface airflow 50 having a substantially uniform wind speed can be blown over a wide range.

Further, by arranging the nozzles 13 with a gap so that the outlets 19 are on the same surface, the airflow to be blown out becomes the surface airflow 50. The surface airflow 50 is an airflow having a substantially uniform wind speed over a wide area, and since the airflow is linear in the blowing direction, a core region is formed in the center of the surface airflow 50. Therefore, the straightness is excellent, and the wind speed can be reached far away with little attenuation.

Further, since the fan motor 18 is provided under the floor 40 where the nozzle 13 is erected, it is possible to eliminate anxiety due to contact with the impeller 16 and the noise generated by the fan motor 18 leaks into the living room R. Can be suppressed. Further, since only the nozzle 13 exists in the space of the living room R, it is possible to prevent the space of the living room R from becoming narrow. Therefore, it is possible to provide a low-noise and space-saving blower 11 while eliminating anxiety caused by contact with the impeller 16 and providing an air flow having a substantially uniform wind speed over a wide range.

(Second Embodiment)
Next, the blower device 11 according to the second embodiment will be described with reference to FIG. 3, focusing on the differences from the blower device 11 according to the first embodiment. The same components as those of the blower device 11 according to the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 3 is a right side view of the blower device 11 according to the second embodiment. However, in FIG. 3, only the nozzle 13 shows a cross section showing the inside of the nozzle 13. However, for the sake of simplification of the figure, the wind direction adjusting rib provided inside the nozzle 13 is omitted.

In the blower device 11 according to the second embodiment, the nozzle 13 is configured to penetrate the floor surface 10 to the ceiling surface 60 of the living room R. The inside (underfloor) 40 of the floor surface 10 is composed of an impeller 16 for generating high-pressure air and a motor 17 for driving the impeller 16 as in the blower 11 according to the first embodiment. A fan motor 18 is provided. The fan motor 18 corresponds to the first fan motor of the present invention. On the other hand, inside the ceiling surface 60 (behind the ceiling) 41, a second fan motor composed of a second impeller 61 for generating high-pressure air and a second motor 62 for driving the second impeller 61 63 is provided.

Further, inside each nozzle 13, a duct 20 for guiding the high-pressure air generated by the fan motor 18 to the outlet 19 is provided on the floor surface 10 side, and the high-pressure air generated by the second fan motor 63 is blown out. A second duct 66 for leading to 19 is provided on the ceiling surface 60 side. This duct 20 corresponds to the first duct of the present invention. The duct 20 and the second duct 66 are partitioned by a partition portion 67. The duct 20 and the second duct 66 each include at least the same number as the nozzle 13.

Similar to the first embodiment, a chamber 21 for distributing high-pressure air to the duct 20 of each nozzle 13 is provided under the floor 40 between the fan motor 18 and the duct 20. The high-pressure air generated by the fan motor 18 is guided to the chamber 21 through the flow path 12 under the floor 40, and is distributed to each duct 20 by the chamber 21. This chamber 21 corresponds to the first chamber of the present invention. On the other hand, between the second fan motor 63 and the second duct 66, a second chamber 65 that diverts high-pressure air to the second duct 66 of each nozzle 13 is provided in the ceiling 41. The high-pressure air generated by the second fan motor 63 is guided to the second chamber 65 via the second flow path 64 in the ceiling 41, and is diverted to each second duct 66 by the second chamber 65.

According to such a configuration, in addition to the effect produced by the blower device 11 according to the first embodiment, the following effect is produced. That is, when the blower 11 operates, the motor 17 is driven and the impeller 16 rotates to generate high-pressure air, which reaches the chamber 21 via the flow path 12 as shown in the internal flow 23. The high-pressure air generated by the fan motor 18 is divided into a plurality of ducts 20 in the chamber 21, passes through each duct 20, and is blown out from the lower half of the outlet 19 to become a blown air flow 25.

On the other hand, when the blower 11 operates, the second motor 62 is also driven, and the second impeller 61 rotates to generate high-pressure air, which is second via the second flow path 64 as shown in the internal flow 71. Reach chamber 65. The high-pressure air generated by the second fan motor 63 is divided into a plurality of second ducts 66 in the second chamber 65, passes through each of the second ducts 66, and is blown out from the upper half of the outlet 19 to blow out air. It becomes the flow 25.

Then, the air outside the attracting air passage 22 and the outermost nozzle 13 is attracted by the blowing air flow 25 blown out from the lower half and the upper half of the blowing port 19, and becomes the attracting air flow 26. The blown air flow 25 and the attracted air flow 26 are merged in front of the blower direction of the blower 11, and a surface airflow 50 having a substantially uniform wind speed can be blown from the floor surface 10 to the ceiling surface 60 of the living room R.

Further, high-pressure air is generated by using a plurality of fan motors of the fan motor 18 and the second fan motor 63, and the high-pressure air is conveyed to a plurality of ducts (duct 20 and second duct 66) provided in the nozzle 13. Therefore, the air volume of high-pressure air that should be generated in one fan motor can be reduced. Therefore, since the pressure loss applied to the fan motor can be reduced, the noise caused by the fan motor can be suppressed, and the synergistic effect of the fan motor provided in the underfloor 40 or the ceiling 41 provides a lower noise blower device 11. can.

Further, since the duct 20 and the second duct 66 are partitioned by the partition portion 67, the high-pressure air generated by the fan motor 18 flows back to the second fan motor 63 through the duct, or the second fan. It is possible to prevent the high-pressure air generated by the motor 63 from flowing back to the fan motor 18 through the duct. Therefore, the noise caused by the load applied to the fan motor 18 or the second fan motor 63 due to the backflow can be suppressed, and the blower device 11 with lower noise can be provided.

(Third Embodiment)
Next, the blower device 11 according to the third embodiment will be described with reference to FIG. 4, focusing on the differences from the blower device 11 according to the first and second embodiments. The same components as those of the blower device 11 according to the first and second embodiments are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 4A is a right side view of the blower device 11 according to the third embodiment, and FIG. 4B is a top view of the blower device 11 with the top plate 32 removed. In the blower device 11 according to the third embodiment, a suction port 80 for taking in air is provided in the living room R in order to supply air to the fan motor 18. The suction port 80 and the fan motor 18 are connected by a flow path 81, and the air in the living room R taken in by the suction port 80 is supplied to the fan motor 18 via the flow path 81.

The suction port 80 is provided at a position on the wall surface of the living room R so as not to come into contact with the surface airflow 50 blown from the blower device 11. For example, as shown in FIG. 4B, the suction port 80 is provided on the floor surface 10 on the side opposite to the side where the airflow is blown from the blower device 11 and away from the back surface of the blower device 11. The suction port 80 does not necessarily have to be provided on the floor surface 10, and the suction port 80 is provided at an arbitrary position on the wall surface of the living room R as long as it does not come into contact with the surface airflow 50 blown from the blower device 11. May be done.

According to such a configuration, it is possible to suppress the surface airflow 50 blown into the living room R from being disturbed by the airflow generated by the air taken into the suction port 80, and the surface airflow 50 having a substantially uniform wind speed over a wide range. Can be kept. Further, by not providing the suction port 80 in the area where the surface airflow 50 can be experienced, the noise radiated from the suction port 80 is less likely to reach a person, and low noise can be realized.

(Fourth Embodiment)
Next, the blower device 11 according to the fourth embodiment will be described with reference to FIG. 5, focusing on the differences from the blower device 11 according to the first to third embodiments. The same components as those of the blower device 11 according to the first to third embodiments are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 5 is a right side view of the blower device 11 according to the fourth embodiment. In the blower 11 according to the fourth embodiment, a suction port 80 is provided in the living room R as a suction port for taking in air for supplying air to the fan motor 18, and a second suction port 83 is outside the house. It is provided on the wall surface facing O. The suction port 80 takes in the air of the living room R, and the second suction port 83 takes in the outside air of O outside the house. The air taken in from the suction port 80 is conveyed to the fan motor 18 via the flow path 81, the damper 85, and the flow path 86. Further, the air taken in from the second suction port 83 is conveyed to the fan motor 18 via the flow path 84, the damper 85, and the flow path 86.

The damper 85 is located between the air flow path 81 taken in from the suction port 80 and the air flow path 84 taken in from the second suction port 83 and the air flow path 86 for carrying the air taken in to the fan motor 18. It is provided in. The damper 85 switches the air connected to the fan motor 18 between the air in the living room R taken in from the suction port 80 and the outside air in the outside O taken in from the second suction port 83, and / Alternatively, the ratio of the amount of air taken in from the suction port 80 and the second suction port 83 is adjusted. A damper motor (not shown) is connected to the damper 85, and the damper 85 is configured to be rotatable by driving the damper motor.

When the damper 85 is rotated to be positioned at the position 85a, all the air connected and conveyed to the fan motor 18 can be made into the air in the living room R taken in from the suction port 80. On the other hand, when the damper 85 is rotated to be positioned at the position 85b, all the air connected and conveyed to the fan motor 18 can be used as the outside air of the house O taken in from the second suction port 83. Further, by rotating the damper 85 to position it at an arbitrary position between the positions 85a and 85b, the air flow path 81 in the living room R sucked from the suction port 80 connected to the flow path 86 And the cross-sectional area of the flow path 84 of the outside air of the outside O of the house sucked from the second suction port 83 can be adjusted. By adjusting the cross-sectional areas of the flow paths 81 and 84, the ratio of the amount of air taken in from the suction port 80 and the second suction port 83 is adjusted.

The position of the damper 85 may be configured to be changeable by the user, or may be configured to be automatically changed according to a situation such as the temperature inside the living room R or the temperature outside the house O.

According to such a configuration, the air supplied to the fan motor 18 can be switched or mixed between the air inside the living room R and the outside air outside the house O, so that the air inside the living room R can be switched or mixed, if necessary. The amount of air taken in from the suction port 80 provided in the above can be reduced. Therefore, the wind noise generated from the suction port 80 can be suppressed, and low noise can be realized. Further, since the fresh air of the outside air can be blown from the air outlet 19, the comfort in the living room R can be enhanced.

Although the present invention has been described above based on the embodiments, the present invention is not limited to the above embodiments, and it is easy to make various improvements and modifications within a range that does not deviate from the gist of the present invention. It can be inferred. For example, each embodiment is provided by adding a part or a plurality of parts of the configuration of another embodiment to the embodiment or exchanging a part or a plurality of parts of the structure of the embodiment with each other. The embodiment may be modified to form the configuration. Further, the numerical values given in each of the above embodiments are examples, and it is naturally possible to adopt other numerical values.

The blower according to the present invention eliminates the anxiety caused by contact with the impeller, and can provide a low-noise, space-saving blower while providing an air flow having a substantially uniform wind speed over a wide range. It is installed on the ceiling or wall and is useful as various blowers used for reducing the sensible temperature due to direct airflow and circulating air in the room.

R Living room O Outside the house 10 Floor surface 11 Blower 12 Flow path 13 Nozzle 16 Impeller 17 Motor 18 Fan motor 19 Blowout 20 Duct 21 Chamber 22 Induction air passage 23 Internal flow 24 Wind direction adjustment rib 25 Blow air flow 26 Induction air flow 32 Top plate 40 Underfloor 41 Under-ceiling 50 Surface airflow 60 Ceiling surface 61 Second impeller 62 Second motor 63 Second fan motor 64 Second flow path 65 Second chamber 66 Second duct 67 Partition 71 Internal flow 80 Suction port 81 Flow path 83 Second suction port 84 Flow path 85 Damper 85a Position 85b Position 86 Flow path

Claims (4)

It is a blower that generates airflow inside a specific space.
A plurality of nozzles erected from one wall surface constituting the specific space toward the inside of the specific space,
A chamber for transporting high-pressure air to each of the plurality of nozzles,
An impeller and a fan motor for sending the high-pressure air to the chamber,
With
Each of the plurality of nozzles has a duct connected to the chamber and an outlet for blowing out the high-pressure air conveyed from the duct.
The plurality of nozzles are arranged in parallel in a predetermined gap, and form an air attracting air passage for air attracted to the high-pressure air blown out from the outlet by the gap.
A blower device characterized in that the chamber, the impeller, and the fan motor are arranged inside the one wall surface. The blower according to claim 1, wherein the plurality of nozzles are arranged so that adjacent outlets are flush with each other. The blower according to claim 1 or 2, wherein each of the plurality of nozzles further includes a wind direction adjusting rib for adjusting the direction of the airflow blown from the outlet. A suction port that takes in the air inside the specific space,
The second suction port that takes in the air outside the specific space,
A damper for adjusting the ratio of the amount of air taken in from the suction port and the amount of air taken in from the second suction port, and
The blower according to any one of claims 1 to 3, further comprising.

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