WO2021024714A1 - Dispositif de soufflante - Google Patents

Dispositif de soufflante Download PDF

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Publication number
WO2021024714A1
WO2021024714A1 PCT/JP2020/027380 JP2020027380W WO2021024714A1 WO 2021024714 A1 WO2021024714 A1 WO 2021024714A1 JP 2020027380 W JP2020027380 W JP 2020027380W WO 2021024714 A1 WO2021024714 A1 WO 2021024714A1
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WO
WIPO (PCT)
Prior art keywords
top plate
airflow
desk
air
blower
Prior art date
Application number
PCT/JP2020/027380
Other languages
English (en)
Japanese (ja)
Inventor
雄多 脇山
一平 小田
泰世 杉本
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2021024714A1 publication Critical patent/WO2021024714A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
    • F04F5/20—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating

Definitions

  • This disclosure relates to a blower device that is provided on the back side of a desk and blows airflow along the top plate of the desk.
  • a blower of this type for example, a partition provided on the back side of a desk is provided with an outlet, and an air-conditioned airflow is blown out onto the top plate of the desk from the outlet of the partition. (See Patent Document 1).
  • the present disclosure provides a blower capable of suppressing the occurrence of an attraction phenomenon due to the Coanda effect caused by the blown airflow from the outlet when the blown airflow is blown along the top plate of the desk.
  • the purpose is to provide.
  • the blower according to the present disclosure is provided on the back side of the desk and blows airflow onto the upper surface of the top plate of the desk.
  • the air blower blows out high-pressure air in a suction port that takes in air, a high-pressure air generating part that turns the air taken in from the suction port into high-pressure air, and a blowing direction that is a predetermined elevation angle with respect to the upper surface of the top plate of the desk. It is equipped with a blowout portion that blows out as airflow.
  • the outlet is located between the plurality of outlets arranged side by side along the upper surface of the top plate of the desk and the two adjacent outlets of the plurality of outlets, and the two adjacent outlets.
  • the blower device can suppress the occurrence of an attraction phenomenon due to the Coanda effect caused by the blown airflow from the outlet when the blown airflow is blown along the top plate of the desk.
  • FIG. 1 is a perspective view of a blower device according to a first embodiment of the present disclosure.
  • FIG. 2 is a front view of the blower according to the first embodiment of the present disclosure.
  • FIG. 3 is a cross-sectional view of the blower according to the first embodiment of the present disclosure.
  • FIG. 4A is a diagram showing an attracting region and an attracting airflow flow formed between two blown airflow regions in a cross section horizontal to the top plate of the blower.
  • FIG. 4B is a diagram showing an attracting region and an attracting airflow flow formed between two blowout airflow regions in a cross section perpendicular to the top plate of the blower.
  • FIG. 1 is a perspective view of a blower device according to a first embodiment of the present disclosure.
  • FIG. 2 is a front view of the blower according to the first embodiment of the present disclosure.
  • FIG. 3 is a cross-sectional view of the blower according to the first embodiment of the present disclosure.
  • FIG. 4A is
  • FIG. 5A is a diagram of simulation results showing the airflow from the outlet (flow velocity distribution of the airflow) when a wall portion is provided between the adjacent outlets.
  • FIG. 5B is a diagram of simulation results showing the airflow from the outlet (flow velocity distribution of the airflow) when the wall portion is not provided.
  • the blower according to the present disclosure is provided on the back side of the desk and blows airflow onto the upper surface of the top plate of the desk.
  • the air blower blows out high-pressure air in a suction port that takes in air, a high-pressure air generating part that turns the air taken in from the suction port into high-pressure air, and a blowing direction that is a predetermined elevation angle with respect to the upper surface of the top plate of the desk. It is equipped with a blowout portion that blows out as airflow.
  • the outlet is located between the plurality of outlets arranged side by side along the upper surface of the top plate of the desk and the two adjacent outlets of the plurality of outlets, and the two adjacent outlets. Between the two airflows blown out from the desk, there is a wall portion that forms an attractive region where air is attracted from above the desk top plate toward the negative pressure region on the upper surface of the desk top plate. It is configured.
  • the openings of the plurality of outlets are vertically long in the normal direction of the upper surface of the top plate of the desk, and the width of the wall portion that is the distance between the two adjacent outlets is , It is preferable that it is wider than the width of the opening of the air outlet. By doing so, it is possible to surely form an attraction region formed between the two airflow outlets blown from the two adjacent outlets.
  • the wall portion is provided so that a plurality of outlets are on the same surface.
  • the airflow blown out from the plurality of outlets becomes a surface airflow (airflow having a surface spread), and the blower blows an airflow having a substantially uniform wind speed over a wide range to the user. It becomes possible to do.
  • FIG. 1 is a perspective view of the blower device 10 according to the first embodiment of the present disclosure.
  • FIG. 2 is a front view of the blower device 10 according to the first embodiment of the present disclosure.
  • the blower device 10 has a configuration in which the blower portion 12 is integrally installed on the upper surface of the top plate 11a of the counter desk 11. Then, the blower device 10 blows the airflow from the blower unit 12 toward the head of the user (the person to be blown by the airflow) who uses the counter desk 11.
  • the blower portion 12 corresponds to the “blowout portion” of the claim.
  • the counter desk 11 includes a top plate 11a on which the user works, a front plate 11b located on the front side (user side) of the blower device 10, and a back plate 11c located on the side opposite to the front plate 11b (FIG. 3) and two side plates 11d connecting the front plate 11b and the back plate 11c.
  • the front plate 11b, the back plate 11c, and the side plates 11d form a pedestal (leg portion) that supports the top plate 11a.
  • the inside of the counter desk 11 has a hollow structure.
  • the upper surface of the top plate 11a is formed so that a part of the blower portion 12 protrudes from the upper surface of the top plate 11a at the position on the back side (back plate 11c side) of the counter desk 11.
  • At least one of the side plates 11d is provided with a plurality of slit-shaped suction ports 15 for taking in air.
  • the suction port 15 is an opening for taking in air from the outside of the counter desk 11. Further, the suction port 15 may be equipped with an air purification filter (not shown) for purifying the air to be taken in.
  • an air purification filter (not shown) for purifying the air to be taken in.
  • the air taken in can be purified air from which dust, pollen, allergens and the like have been removed.
  • the blower portion 12 is provided on the back plate 11c side of the counter desk 11 and is formed so as to project vertically from the upper surface of the top plate 11a. That is, the blower portion 12 is configured to have a side surface 12a (a surface that stands up against the upper surface of the top plate 11a) at the protruding portion of the upper surface of the top plate 11a. Then, the blower portion 12 is an airflow (blowout airflow 30) from a plurality of outlets 13 provided on the side surface 12a in a blowout direction having a predetermined elevation angle ⁇ (see FIG. 3) with respect to the upper surface of the top plate 11a of the counter desk 11. : See Fig. 3) is configured to blow out.
  • blower unit 12 will be described in detail.
  • the blower portion 12 is configured to have a plurality of outlets 13 and a wall portion 14 located between two adjacent outlets 13 on the side surface 12a of the blower portion 12. ..
  • the outlet 13 is an opening for blowing out the high-pressure air generated by the high-pressure air generating unit 18 described later as the blown airflow 30, and is in the vertical direction of the blower 10 (in the present embodiment, the top plate 11a of the counter desk 11). It is formed in a vertically elongated slit shape (in the same direction as the normal direction). Specifically, the air outlet 13 has an opening width W1 corresponding to the short side of the slit and a height H1 corresponding to the long side of the slit. The plurality of outlets 13 are arranged side by side in a row along the upper surface of the top plate 11a of the counter desk 11.
  • the wall portion 14 is provided located between two adjacent outlets 13. Specifically, the wall portion 14 has a wall width W2 and a height H2 that are spaced apart from two adjacent outlets 13. In the present embodiment, 17 wall portions 14 are provided for 18 outlets 13. The height H2 of the wall portion 14 corresponds to the amount of protrusion of the blower portion 12 from the upper surface of the top plate 11a.
  • the wall width W2 of the wall portion 14 has a width wider than the opening width W1 of the air outlet 13, and is set to, for example, about three times the opening width W1. Further, the wall portion 14 is formed so that the plurality of outlets 13 are on the same surface.
  • the wall portion 14 has a role of shielding the high-pressure air generated by the high-pressure air generating portion 18 from being blown out as a blown airflow 30. Then, when the blower device 10 is operating, the wall portion 14 is placed between the two blown airflows 30 blown out from the two adjacent outlets 13 from above the counter desk 11 to the upper surface of the top plate 11a of the counter desk 11. An attraction region 22 is formed to attract air toward the negative pressure region 23 formed in. Details will be described later.
  • FIG. 3 is a cross-sectional view of the blower device 10 according to the first embodiment of the present disclosure.
  • the blower device 10 drives a blower fan (centrifugal fan) 16 and a blower fan 16 inside the counter desk 11 to convert the air taken in from the suction port 15 (see FIG. 1) into high-pressure air.
  • a high-pressure air generating unit 18 including a motor 17 is provided. Then, the high-pressure air generated by the high-pressure air generating unit 18 circulates in the order of the ventilation passage 19 and the ventilation front chamber 20, and is blown out as the blown airflow 30 from the outlet 13.
  • the ventilation passage 19 is composed of a duct that communicates between the high-pressure air generating unit 18 and the ventilation front chamber 20.
  • the ventilation front chamber 20 communicates with the ventilation unit 12 and supplies the high-pressure air flowing through the ventilation passage 19 to the ventilation unit 12.
  • the scent generator 20 is a space in which a scent generator or an air purifier can be stored. For example, when the scent generator is installed in the scent generator 20, the scent is emitted to the circulating high-pressure air. It becomes possible to grant.
  • the plurality of outlets 13 of the blower portion 12 are configured to blow out the blown airflow in the blowing direction having a predetermined elevation angle ⁇ with respect to the upper surface (horizontal plane) of the top plate 11a of the counter desk 11.
  • the predetermined elevation angle ⁇ is a value preset so that the blown airflow 30 is blown to the user's head, and is set to, for example, about 30 °.
  • FIG. 4A is a diagram showing the flow of the attracting region 22 and the attracting airflow 31 formed between the two blown airflow regions 21 in a cross section horizontal to the top plate 11a of the blower device 10.
  • FIG. 4B is a diagram showing the flow of the attracting region 22 and the attracting airflow 31 formed between the two blown airflow regions 21 in a cross section perpendicular to the top plate 11a of the blower device 10.
  • the blowout airflow region 21 becomes wider than the opening width W1 (and height H1) of the outlets 13. It is formed. Then, when the airflow region 21 is separated from the outlet 13 to some extent, the airflow regions 21 overlap. That is, the blown airflow 30 blown out from the outlet 13 is mixed with the blown airflow 30 blown out from the adjacent outlet 13 and blown when the airflow portion 30 is separated from the blower portion 12 (outlet 13) to some extent. Since the plurality of outlets 13 are formed so as to have the same surface, the airflow 30 blown out from the outlets becomes a surface airflow (airflow having a surface spread), and an airflow having a substantially uniform wind speed over a wide range. It becomes.
  • the attraction region 22 is a region that functions as a flow path that penetrates the blowout airflow region 21 (blowout airflow 30), and has a negative pressure between the blowout airflow region 21 and the top plate 11a.
  • the region 23 is generated, the air above the top plate 11a can be made to flow toward the negative pressure region 23 by the attractive action.
  • the generation of the negative pressure region 23 that causes the attraction phenomenon due to the Coanda effect is suppressed, and the blown airflow 30 can be blown out in the blowing direction having a predetermined elevation angle ⁇ with respect to the upper surface of the top plate 11a. it can.
  • FIG. 5A is a diagram of simulation results showing the airflow 30 (flow velocity distribution of the airflow 30) from the outlet 13 when the wall portion 14 is provided between the adjacent outlets 13.
  • FIG. 5B is a diagram of simulation results showing the airflow 30 (flow velocity distribution of the airflow 30) from the outlet 13 when the wall portion 14 is not provided.
  • the blower 10 is configured so that air flows into the negative pressure region 23 through the attraction region 22 formed by the wall portion 14, so that the Coanda effect is obtained as compared with the conventional blower 10a. It can be seen that the occurrence of the attraction phenomenon can be suppressed.
  • a wall portion 14 is provided on the counter desk 11 to form an attraction region 22 for attracting air from above the top plate 11a toward the negative pressure region 23 on the upper surface of the top plate 11a.
  • the opening of the air outlet 13 is vertically long in the normal direction of the upper surface of the top plate 11a of the counter desk 11, and the wall width W2 of the wall portion 14 that is the distance between the two adjacent air outlets 13 is the air outlet. It was formed wider than the opening width W1 of 13. By doing so, it is possible to surely form the attraction region 22 formed between the two blown airflows 30 blown from the two adjacent outlets 13.
  • the wall portion 14 is provided so that a plurality of outlets 13 are on the same surface. By doing so, the blown airflow 30 blown out from the blowout port 13 becomes a surface airflow, and the blower device 10 can blow an airflow having a substantially uniform wind speed over a wide range to the user.
  • a counter desk 11 and a blower unit 12 are integrally configured, but the present invention is not limited to this.
  • the counter desk 11 and the blower unit 12 may be formed separately. As a result, the degree of freedom in designing the blower 10 can be improved.
  • the blower according to the present embodiment is also useful as a personal blower. It is also applicable to a blower having a temperature control (cooling, heating) function or a desk with a blower function.
  • Blower 10 Conventional blower 11 Counter desk 11a Top plate 11b Front plate 11c Back plate 11d Side plate 12 Blower 13 Blow outlet 14 Wall 15 Suction port 16 Blower fan 17 Motor 18 High pressure air generator 19 Blower 20 Before ventilation Room 21 Blow-out airflow area 22 Attracting area 23 Negative pressure area 30 Blow-out airflow area 31 Attracting airflow

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

La présente invention concerne un dispositif de soufflante qui comprend un orifice d'admission qui aspire de l'air, une section de production d'air à haute pression qui transforme l'air aspiré dans l'orifice d'admission en air à haute pression, et une section de soufflage (12) qui souffle l'air à haute pression sous forme de flux d'air soufflé dans une direction de soufflage qui se trouve à un angle d'élévation prédéfini par rapport à une surface supérieure d'un plateau supérieur (11a) d'un comptoir d'accueil. La section de soufflage (12) comprend : une pluralité d'orifices de soufflage (13) alignés le long de la surface supérieure du plateau supérieur (11a) du comptoir d'accueil ; et une partie paroi (14) qui est positionnée entre deux orifices de soufflage (13) adjacents parmi la pluralité d'orifices de soufflage (13), et qui forme, entre deux zones (21) de flux d'air de soufflage dans lesquelles de l'air est soufflé depuis les deux orifices de soufflage (13) adjacents, une zone d'attraction (22) au niveau de laquelle de l'air est attiré depuis le dessus du plateau supérieur (11a) du comptoir d'accueil vers une zone de pression négative (23) au niveau de la surface supérieure du plateau supérieur (11a) du comptoir d'accueil.
PCT/JP2020/027380 2019-08-02 2020-07-14 Dispositif de soufflante WO2021024714A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-142646 2019-08-02
JP2019142646A JP7386387B2 (ja) 2019-08-02 2019-08-02 送風装置

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WO2021024714A1 true WO2021024714A1 (fr) 2021-02-11

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0546088U (ja) * 1991-11-22 1993-06-18 カシオ計算機株式会社 電子機器の空気吐出口構造
CN109198925A (zh) * 2017-07-05 2019-01-15 南京林恒机械制造有限公司 一种多功能办公桌

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03168562A (ja) * 1989-11-27 1991-07-22 Matsushita Electric Ind Co Ltd 空気調和装置
JP4134538B2 (ja) * 2000-10-30 2008-08-20 ダイキン工業株式会社 空気調和装置及び睡眠カプセル
JP6052959B2 (ja) * 2012-07-19 2016-12-27 株式会社竹中工務店 空調システム

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0546088U (ja) * 1991-11-22 1993-06-18 カシオ計算機株式会社 電子機器の空気吐出口構造
CN109198925A (zh) * 2017-07-05 2019-01-15 南京林恒机械制造有限公司 一种多功能办公桌

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JP7386387B2 (ja) 2023-11-27

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