WO2006115197A1 - Blower device - Google Patents

Blower device Download PDF

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Publication number
WO2006115197A1
WO2006115197A1 PCT/JP2006/308413 JP2006308413W WO2006115197A1 WO 2006115197 A1 WO2006115197 A1 WO 2006115197A1 JP 2006308413 W JP2006308413 W JP 2006308413W WO 2006115197 A1 WO2006115197 A1 WO 2006115197A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
blower
air flow
scroll
centrifugal impeller
Prior art date
Application number
PCT/JP2006/308413
Other languages
French (fr)
Japanese (ja)
Inventor
Kanjirou Kinoshita
Original Assignee
Daikin Industries, Ltd.
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 Daikin Industries, Ltd. filed Critical Daikin Industries, Ltd.
Publication of WO2006115197A1 publication Critical patent/WO2006115197A1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/42Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226Fan casings
    • F04D29/4246Fan casings comprising more than one outlet
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/60Mounting; Assembling; Disassembling
    • F04D29/601Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/668Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations

Definitions

  • the present invention relates to an air blower, and more particularly to an air blower that can select various usage forms with a single impeller.
  • the air blower is composed of a combination of a suitably shaped impeller and a pressure recovery device (for example, a scroll).
  • the impeller and the pressure recovery device are each driven by a motor.
  • Patent Document 1 Japanese Patent Laid-Open No. 2002-98365
  • the present invention has been made in view of the above points, and provides a blower that can be used in various forms of use and can keep the storage space as small as possible. It is an object.
  • a blower device including a centrifugal impeller and a fan casing having a suction port facing the distal impeller is provided.
  • the fan casing is provided with two air outlets and two air flow paths for guiding an air flow blown from the centrifugal impeller in the centrifugal direction to each air outlet.
  • Two air channels! There is a channel opening / closing means on either side! RU
  • a blower device including a centrifugal impeller and a fan casing having a suction port facing the centrifugal impeller.
  • the fan casing is provided with two air outlets and two air flow paths for guiding an air flow blown from the centrifugal impeller in the centrifugal direction to each air outlet. Further, the fan casing is provided with channel opening / closing means for selectively opening and closing the two air channels.
  • the two air flow paths preferably also include a scroll positioned on the suction port side, a diffuser facing the scroll, and a force.
  • the diffuser can be continuously formed on the side surface of the scroll, and the entire storage space can be further reduced.
  • the peripheral wall portion of the scroll preferably inclines outward from the func- celing as it faces the diffuser. In this case, the flow force of the air flow directed toward the scroll force diffuser becomes smooth, and the aerodynamic performance of the blower is further improved.
  • the flow path opening / closing means preferably shuts off the air flow to the diffuser when used at a small air volume and high static pressure, and the scroll and the above when used at a large air volume and low static pressure. Do not block the air flow to the diffuser.
  • the air blower can suitably cope with use with a small air volume and high static pressure or a large air volume and low static pressure.
  • the flow path opening / closing means preferably opens an air flow path constituted by the diffuser. Close.
  • the air blower can permit or prohibit the blowing of air with a diffuser force by opening and closing the air flow path with the flow path opening / closing means, and can cope with various usage modes.
  • a pressure loss imparting member that imparts a pressure loss to the air flow that is blown by the air outlet force is provided at the air outlet of the air flow path constituted by the scroll.
  • the air flow path is open, almost no air is blown out from the scroll due to the presence of the pressure loss imparting member, and only the diffuser blows out the powerful air, so that the blower is optimal as a moisture absorbing fan.
  • the air flow path is closed, air is blown out only from the scroll, and the air blower is optimal as a humidifying fan.
  • the pressure loss imparting member is preferably constituted by an air conveyance channel.
  • the pressure loss applying member can be used as an air transfer channel (for example, an air transfer channel from the outdoor unit to the indoor unit), and the structure of the blower can be simplified.
  • an extended portion is extended integrally with the rear plate so as to extend in the centrifugal direction of the centrifugal impeller, and the extended portion is arranged in front of the diffuser. It is preferable that the board is also used. In this case, the axial dimension of the centrifugal impeller in the blower can be made as small as possible, and the space occupied by the blower can be reduced.
  • a shroudless centrifugal impeller is preferably used as the centrifugal impeller, and the shape of the suction port is preferably a bell mouth shape. In this case, the wind speed distribution at the exit of the centrifugal impeller is good.
  • FIG. 1 is a cross-sectional view of a blower that works on the first embodiment of the present invention.
  • FIG. 2 is a cross-sectional view taken along II II in FIG.
  • FIG. 3 is a cross-sectional view showing a first modification of the blower.
  • FIG. 4 is a cross-sectional view showing a second modification of the blower.
  • FIG. 5 is a cross-sectional view showing a first modification of the centrifugal impeller constituting the blower.
  • FIG. 6 is a cross-sectional view showing details of a suction port in a first modification of the centrifugal impeller.
  • FIG. 7 is a cross-sectional view showing a second modification of the centrifugal impeller.
  • FIG. 8 is a characteristic diagram of air volume vs. static pressure for explaining a usage mode of the blower.
  • FIG. 9 is a cross-sectional view showing a state during a heating and humidifying operation of a dehumidifying / humidifying device using a blower.
  • FIG. 10 is a cross-sectional view showing a state during a heating and humidifying operation of a dehumidifying / humidifying device using a blower.
  • FIG. 11 is a longitudinal sectional view showing a first example of flow path opening / closing means in the blower.
  • FIG. 12 is a longitudinal sectional view showing a second example of the flow path opening / closing means.
  • FIG. 13 is a longitudinal sectional view showing a third example of the flow path opening / closing means.
  • FIG. 14 is a longitudinal sectional view showing a fourth example of the flow path opening / closing means.
  • FIG. 15 is a cross-sectional view showing a state of a small air volume and a high static pressure operation (for example, a humidifying operation) of a blower according to a second embodiment of the present invention.
  • FIG. 16 is a cross-sectional view showing a state of a large air volume and a low static pressure operation (for example, a dehumidifying operation) of the blower.
  • FIG. 17 is a characteristic diagram showing the effect of reducing outdoor operation noise in this type of blower.
  • FIG. 18 is a cross-sectional view of an air blower that works on the third embodiment of the present invention.
  • FIG. 1 to FIG. 14 show an air blower that works on the first embodiment of the present invention.
  • the blower X also has a force with a centrifugal impeller 1 and a fan casing 2 having a suction port 3 facing the centrifugal impeller 1.
  • the fan casing 2 is formed with two air outlets 4 and 5 and two air flow paths 6 and 7 for guiding an air flow blown in the centrifugal direction from the centrifugal impeller 1 to the air outlets 4 and 5.
  • the fan casing 2 is provided with channel opening / closing means 8 for selectively opening and closing the two air channels 6 and 7.
  • the centrifugal impeller 1 is a shunt configured by a large number of receding blades 11 standing on the peripheral edge of a main plate 10 pivotally supported by a rotating shaft 9 of a fan motor (not shown) as a drive source. Loudress Thai Is. At the outer edge of the tip of each swept blade 11, a part of the air flow blown from the centrifugal impeller 1 circulates toward the tip of each swept blade 11 to generate a uniform blown air flow. A ring body 12 for obtaining the distribution is formed. In order to more easily generate the circulation flow, the receding blades 11 are inclined toward the main plate 10 as their tips are directed from the inner edge to the outer edge of the receding blades 11. .
  • the fan casing 2 includes a scroll 13 located on the suction port 3 side, and a radius transition type diffuser facing the scroll 13 (the blown air is directed toward the outlet force of the blades in an oblique direction, and then the radial direction) To the diffuser 14).
  • the scroll 13 has an outlet 4, and the air flow path 6 is formed in the scroll 13.
  • the diffuser 14 has an outlet 5, and the air flow path 7 is formed in the diffuser 14.
  • a peripheral wall portion 13 a of the scroll 13 is formed around the rotary shaft 9 of the centrifugal impeller 1. For this reason, the diffuser 14 is continuously formed on the side surface of the scroll 13, and the entire storage space can be further reduced.
  • the flow path opening / closing means 8 is configured by a damper that opens and closes the outlet 5 of the diffuser 14.
  • the damper 8 closes the air outlet 5 so as to block the air flow to the diffuser 14 when used at a small air volume and high static pressure (when used at point of use A in FIG. 8).
  • the air blower can be suitably adapted for use with a small air volume and high static pressure or a large air volume and low static pressure.
  • the peripheral wall portion 13a of the scroll 13 is preferably as shown in FIG.
  • the fan casing 2 is tilted outward as it is directed to the diffuser 14.
  • the diffuser 14 may be a mixed flow type.
  • the peripheral edge portion 10a of the main plate 10 of the centrifugal impeller 1 is cut away (see the phantom line in FIG. 5), and the outer edge of the base end portion of each receding blade 11 is opened.
  • the aerodynamic performance of the blower is improved.
  • the inner end of the suction port 3 is preferably moved backward as it moves toward the end edge. It is formed in a slanted shape so as to incline with force.
  • each swept blade 11 of the centrifugal impeller 1 is inclined toward the rotation center of the rotating shaft 9 as it goes from the front end to the base end of the swept blade 11.
  • the rotation axis 9 may be parallel to the rotation center.
  • a selection 15 may be formed on the inner edge of each receding blade 11 of the centrifugal impeller 1.
  • the centrifugal impeller 1 includes a plurality of blades between a main plate 10 that is pivotally supported by a motor rotating shaft 9 and a shroud 16 that is disposed to face the peripheral edge of the main plate 10.
  • a type in which the swept wing 11 is sandwiched may be used.
  • the peripheral portion of the main plate 10 is preferably cut off and the base end portion of each receding blade 11 is opened.
  • an annular groove 17 is formed at the peripheral edge of the suction port 3 so that the inner end of the shroud 16 faces.
  • the dehumidifying / humidifying device Y is installed outside the room and includes a casing 19.
  • a plurality of air inlets 18 are formed on the front surface of the casing 19.
  • an adsorbing element 20 that faces each of the air inlets 18 and incorporates a heater, and a blower X that works on the embodiment of the present invention.
  • Air outlets 21 and 22 are formed at the rear part of the upper and lower side surfaces of the casing 19 and the upper and lower end parts of the rear surface.
  • a hose 24 that leads to an indoor unit (not shown) is connected to the outlet 4 of the scroll 13 in the blower X via a connecting pipe 23.
  • the inside of the casing 19 is divided into a suction side and a blowout side by a partition plate 25.
  • a fan motor 26 is attached to the rotary shaft 9.
  • this dehumidifying / humidifying device Y for example, in the case of a batch heating / humidifying operation, first, in order to collect moisture in the adsorption element 20, it is necessary that the outdoor aerodynamic force also absorbs moisture into the adsorption element 20. In this case, since the dehumidifying / humidifying device Y needs to suck in a large amount of outdoor air and discharge the dehumidified air to the outside, the dehumidifying / humidifying device Y has a large air volume and a low static pressure. Therefore, the blower X is operated at the point of use B in FIG. Therefore, As shown in FIG.
  • the damper 8 opens the outlet 5 and copes with a large air volume and a low static pressure by the air flow to the two air flow paths 6 and 7.
  • dehumidifying operation refers to absorbing moisture from outdoor air into the adsorption element 20.
  • the dehumidifying / humidifying device Y only needs to suck in a small amount of outdoor air, and the dehumidifying / humidifying device Y has a small air volume and high static pressure.
  • the damper 8 closes the outlet 5 which is the outlet of the diffuser 14, blocks the air flow to the air flow path 7, and opens the air flow path 6 in the scroll 13. Is done.
  • the channel opening / closing means 8 shown in FIG. 11 is configured by a damper that opens and closes the air outlet 5 that is an outlet for air from the diffuser 14.
  • the damper 8 opens and closes the outlet 5 by moving in the horizontal direction. In this case, air stagnation is generated in the diffuser 14, and the performance of the blower X may be deteriorated.
  • the channel opening / closing means 8 shown in FIG. 12 is composed of a damper that opens and closes an air inlet to the diffuser 14 (in other words, the back surface of the scroll 13).
  • the damper 8 opens and closes the air inlet to the diffuser 14 by moving in the horizontal direction. In this case, the stagnation of air in the diffuser 14 is not possible, so that the performance of the blower X is improved.
  • the flow path opening / closing means 8 shown in FIG. 13 is configured by a damper that opens and closes the air outlet 4 that is an outlet for air from the scroll 13.
  • the damper 8 opens and closes the outlet 4 by moving in the vertical direction. In this case, air stagnation is generated at the exit portion of the scroll 13, so that the performance of the blower X may be deteriorated.
  • the channel opening / closing means 8 shown in FIG. 14 is composed of a damper that opens and closes the inside of the outlet portion of the air from the scroll 13.
  • the damper 8 opens and closes the outlet portion by moving in the vertical direction. In this case, the ability to improve the performance of the blower X because the air does not stagnate at the outlet of the air from the scroll 13 The performance of the blower X deteriorates compared to that that does not block the air flow to the scroll 13 .
  • FIG. 15 and FIG. 16 show an air blower that can be applied to the second embodiment of the present invention.
  • the blower X is installed and used outside the room, and a hose 24 leading to an indoor unit (not shown) is connected to the outlet 4 of the scroll 13 in the blower X.
  • the hose 24 also constitutes an air conveyance channel into the room for outdoor force.
  • the hose 24 also serves as a flexible member having a large pressure loss (for example, 1300 Pa), and acts as a pressure loss imparting member that imparts a large pressure loss to the air flow blown from the outlet 4.
  • the blower outlet 5 of the diffuser 14 in the blower X is provided with a damper 8 acting as a flow path opening / closing means.
  • the flow outlet 13 of the force scroll 13 is not provided with a flow path opening / closing means.
  • the air blower X When the air blower X having the above configuration is used for heating and humidifying operation, as shown in FIG. 15, the air blower X is in a state in which the damper 8 of the diffuser 14 closes the air outlet 5 during indoor humidification. Used in. At this time, a small amount of humidified air is blown out from the outlet 4 of the scroll 13 through the hose 24. In this case, the blower X is operated with a small air volume and a high static pressure as indicated by point A in FIG. Further, during the dehumidifying operation, as shown in FIG. 16, the air blowing device X is used in a state where the damper 8 of the diffuser 14 opens the air outlet 5.
  • the scroll 13 even when the scroll 13 is not provided with the damper 8 serving as the channel opening / closing means, it acts as a pressure loss imparting member when the air outlet 5 is opened. Due to the presence of the hose 24, almost no air is blown out from the scroll 13, and only the diffuser 14 is blown out. Therefore, the blower X is optimal as a moisture absorption fan. On the other hand, when the air outlet 5 is closed, air is also blown out only by the scroll 13, and the blower X is optimal as a humidifying fan. As described above, the present embodiment greatly contributes to the reduction of driving sound.
  • FIG. 18 shows a blower that works on the third embodiment of the present invention.
  • an extending portion 27 is extended integrally with the rear plate 13b so as to extend in the centrifugal direction.
  • the extending portion 27 also serves as the front plate 14a of the diffuser 14.
  • the dimension L in the axial direction of the centrifugal impeller 1 in the blower X can be made as small as possible, the space required to occupy the blower X can be reduced.
  • Other configurations and operational effects are the same as those of the first embodiment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A blower device composed of a centrifugal impeller (1) and a fan casing (2) having a suction opening (3) facing the centrifugal impeller (1). The fan casing (2) has two blowout openings (4, 5) and two airflow paths (6, 7). Further, the fan casing (2) has a flow path opening/closing means (8) for selectively opening and closing the two airflow paths (6, 7). An airflow blown out in the centrifugal direction from the centrifugal impeller (1) is led to either of the two blowout openings (4, 5) via either of the two airflow paths (6, 7).

Description

明 細 書  Specification
送風装置  Blower
技術分野  Technical field
[0001] 本願発明は送風装置に関し、さらに詳しくは一つの羽根車で多様な使用形態を選 択することができる送風装置に関するものである。  TECHNICAL FIELD [0001] The present invention relates to an air blower, and more particularly to an air blower that can select various usage forms with a single impeller.
背景技術  Background art
[0002] 従来、室内の加湿と吸湿とを選択的に行うことができるように構成されたユニットの 場合、該ユニットに、小風量及び高静圧での使用時に用いられる空気流路と、大風 量及び低静圧での使用時に用いられる空気流路とが形成される必要がある。このよう な要求に対処するものとして、加湿ファンと吸湿ファンとを備えた送風装置が既に提 案されて!ヽる (特許文献 1参照)。  [0002] Conventionally, in the case of a unit configured to selectively perform humidification and moisture absorption in a room, an air flow path used when using the unit with a small air volume and high static pressure, It is necessary to form an air flow path that is used when the air volume and low static pressure are used. In order to cope with such a demand, a blower device including a humidifying fan and a moisture absorbing fan has already been proposed (see Patent Document 1).
[0003] ところが、上記特許文献 1に開示されている送風装置の場合、該送風装置は、好適 な形状の羽根車と、圧力回復装置 (例えば、スクロールなど)との組み合わせで構成 されており、羽根車及び圧力回復装置はそれぞれモータで駆動される。そのため、 送風装置の収納に要するスペースが大きくなり、コストも増大するという不具合があつ た。 [0003] However, in the case of the air blower disclosed in Patent Document 1, the air blower is composed of a combination of a suitably shaped impeller and a pressure recovery device (for example, a scroll). The impeller and the pressure recovery device are each driven by a motor. For this reason, there is a problem that the space required for housing the blower increases and the cost also increases.
特許文献 1:特開 2002— 98365号公報  Patent Document 1: Japanese Patent Laid-Open No. 2002-98365
発明の開示  Disclosure of the invention
[0004] 本願発明は、上記の点に鑑みてなされたものであり、多様な使用形態に対応するこ とができるとともに、収納スペースを可及的に小さく抑えることができる送風装置を提 供することを目的としている。  [0004] The present invention has been made in view of the above points, and provides a blower that can be used in various forms of use and can keep the storage space as small as possible. It is an object.
[0005] 本願発明では、上記課題を解決するための第 1の態様として、遠心羽根車と、該遠 心羽根車と対向する吸込口を有するファンケーシングとからなる送風装置が提供され る。ファンケーシングには、二つの吹出口と、前記遠心羽根車からその遠心方向に吹 き出される空気流を各吹出口へ導く二つの空気流路とが設けられている。二つの空 気流路の!ヽずれか一方には流路開閉手段が付設されて!、る。  [0005] In the present invention, as a first aspect for solving the above problems, a blower device including a centrifugal impeller and a fan casing having a suction port facing the distal impeller is provided. The fan casing is provided with two air outlets and two air flow paths for guiding an air flow blown from the centrifugal impeller in the centrifugal direction to each air outlet. Two air channels! There is a channel opening / closing means on either side! RU
[0006] 上記構成により、一つの遠心羽根車からその遠心方向に吹き出される空気流が、 二つの空気流路の!、ずれか一方を介して二つの吹出口の!、ずれか一方へ導かれる 。従って、流路開閉手段による二つの空気流路のいずれか一方の開閉によって多様 な使用形態に対応することができ、低コストであり、かつ収納スペースが小さい送風 装置が得られる。 [0006] With the above configuration, the air flow blown in the centrifugal direction from one centrifugal impeller is The two air flow paths are led to one of the two outlets through one of the gaps. Therefore, it is possible to cope with various usage forms by opening / closing one of the two air flow paths by the flow path opening / closing means, and it is possible to obtain a blower apparatus that is low in cost and has a small storage space.
[0007] 本願発明では、上記課題を解決するための第 2の態様として、遠心羽根車と、該遠 心羽根車と対向する吸込口を有するファンケーシングとからなる送風装置が提供され る。ファンケーシングには、二つの吹出口と、前記遠心羽根車からその遠心方向に吹 き出される空気流を各吹出口へ導く二つの空気流路とが設けられている。更に、ファ ンケーシングには、二つの空気流路を選択的に開閉する流路開閉手段が付設され ている。  [0007] In the present invention, as a second aspect for solving the above problems, there is provided a blower device including a centrifugal impeller and a fan casing having a suction port facing the centrifugal impeller. The fan casing is provided with two air outlets and two air flow paths for guiding an air flow blown from the centrifugal impeller in the centrifugal direction to each air outlet. Further, the fan casing is provided with channel opening / closing means for selectively opening and closing the two air channels.
[0008] 上記構成により、一つの遠心羽根車からその遠心方向に吹き出される空気流が、 二つの空気流路の!、ずれか一方を介して二つの吹出口の!、ずれか一方へ導かれる 。従って、流路開閉手段による二つの空気流路の選択的な開閉によって多様な使用 形態に対応することができ、低コストであり、かつ収納スペースが小さい送風装置が 得られる。  [0008] With the above configuration, an air flow blown in the centrifugal direction from one centrifugal impeller is guided to two of the two outlets through one of the two air flow paths! To be burned. Therefore, by selectively opening and closing the two air flow paths by the flow path opening and closing means, it is possible to deal with various usage forms, and a low-cost and small storage space can be obtained.
[0009] 前記二つの空気流路は、好ましくは前記吸込口側に位置するスクロールと、該スク ロールと対向するディフューザと力も構成されている。この場合、スクロールの側面に ディフューザを連続して形成することができ、全体の収納スペースをより一層小さくす ることがでさる。  [0009] The two air flow paths preferably also include a scroll positioned on the suction port side, a diffuser facing the scroll, and a force. In this case, the diffuser can be continuously formed on the side surface of the scroll, and the entire storage space can be further reduced.
[0010] 前記スクロールの周壁部は、好ましくはディフューザに向力うに従いファンケーシン グの外方へ傾斜している。この場合、スクロール力 ディフューザへ向力う空気流の 流れ力スムーズになり、送風装置の空力性能がより向上する。  [0010] The peripheral wall portion of the scroll preferably inclines outward from the func- celing as it faces the diffuser. In this case, the flow force of the air flow directed toward the scroll force diffuser becomes smooth, and the aerodynamic performance of the blower is further improved.
[0011] 前記流路開閉手段は、好ましくは小風量及び高静圧での使用時においては前記 ディフューザへの空気流を遮断し、大風量及び低静圧での使用時においては前記 スクロールおよび前記ディフューザへの空気流を遮断しない。この場合、送風装置は 、小風量及び高静圧あるいは大風量及び低静圧での使用時に好適に対応すること ができる。  [0011] The flow path opening / closing means preferably shuts off the air flow to the diffuser when used at a small air volume and high static pressure, and the scroll and the above when used at a large air volume and low static pressure. Do not block the air flow to the diffuser. In this case, the air blower can suitably cope with use with a small air volume and high static pressure or a large air volume and low static pressure.
[0012] 前記流路開閉手段は、好ましくは前記ディフューザにより構成された空気流路を開 閉する。この場合、送風装置は、流路開閉手段が空気流路を開閉することにより、デ ィフューザ力もの空気の吹き出しを許容あるいは禁止することができ、多様な使用形 態に対応することができる。 [0012] The flow path opening / closing means preferably opens an air flow path constituted by the diffuser. Close. In this case, the air blower can permit or prohibit the blowing of air with a diffuser force by opening and closing the air flow path with the flow path opening / closing means, and can cope with various usage modes.
[0013] 前記スクロールにより構成される空気流路の吹出口には、好ましくは吹出口力 吹 き出される空気流に対して圧損を付与する圧損付与部材が設けられている。この場 合、空気流路が開放されているときには、圧損付与部材の存在によりスクロールから 空気がほとんど吹き出されず、ディフューザのみ力 空気が吹き出され、送風装置が 吸湿用ファンとして最適なものとなる。一方、空気流路が閉鎖されているときには、ス クロールからのみ空気が吹き出され、送風装置が加湿用ファンとして最適なものとな る。  [0013] Preferably, a pressure loss imparting member that imparts a pressure loss to the air flow that is blown by the air outlet force is provided at the air outlet of the air flow path constituted by the scroll. In this case, when the air flow path is open, almost no air is blown out from the scroll due to the presence of the pressure loss imparting member, and only the diffuser blows out the powerful air, so that the blower is optimal as a moisture absorbing fan. On the other hand, when the air flow path is closed, air is blown out only from the scroll, and the air blower is optimal as a humidifying fan.
[0014] 前記圧損付与部材は、好ましくは空気搬送流路により構成されて 、る。この場合、 圧損付与部材が空気搬送流路 (例えば、室外機から室内機への空気搬送流路)とし て利用されることができ、送風装置の構造の簡略ィ匕を図ることができる。  [0014] The pressure loss imparting member is preferably constituted by an air conveyance channel. In this case, the pressure loss applying member can be used as an air transfer channel (for example, an air transfer channel from the outdoor unit to the indoor unit), and the structure of the blower can be simplified.
[0015] 前記スクロールの後板の外方には、延設部が前記遠心羽根車の遠心方向へ延び るように、かつ後板と一体に延設され、該延設部が前記ディフューザの前板を兼用し ていることが好ましい。この場合、送風装置における遠心羽根車の軸方向の寸法を 可及的に小さくでき、送風装置の占有スペースを小さくすることができる。  [0015] On the outer side of the rear plate of the scroll, an extended portion is extended integrally with the rear plate so as to extend in the centrifugal direction of the centrifugal impeller, and the extended portion is arranged in front of the diffuser. It is preferable that the board is also used. In this case, the axial dimension of the centrifugal impeller in the blower can be made as small as possible, and the space occupied by the blower can be reduced.
[0016] 前記遠心羽根車としてシュラウドレスタイプの遠心羽根車が採用され、前記吸込口 の形状がベルマウス形状であることが好ましい。この場合、遠心羽根車の出口におけ る風速分布が良好となる。  [0016] A shroudless centrifugal impeller is preferably used as the centrifugal impeller, and the shape of the suction port is preferably a bell mouth shape. In this case, the wind speed distribution at the exit of the centrifugal impeller is good.
図面の簡単な説明  Brief Description of Drawings
[0017] [図 1]本願発明の第 1の実施の形態に力かる送風装置の断面図である。 [0017] FIG. 1 is a cross-sectional view of a blower that works on the first embodiment of the present invention.
[図 2]図 1の II IIにおける断面図である。  2 is a cross-sectional view taken along II II in FIG.
[図 3]送風装置の第 1の変形例を示す断面図である。  FIG. 3 is a cross-sectional view showing a first modification of the blower.
[図 4]送風装置の第 2の変形例を示す断面図である。  FIG. 4 is a cross-sectional view showing a second modification of the blower.
[図 5]送風装置を構成する遠心羽根車の第 1の変形例を示す断面図である。  FIG. 5 is a cross-sectional view showing a first modification of the centrifugal impeller constituting the blower.
[図 6]遠心羽根車の第 1の変形例における吸込口の詳細を示す断面図である。  FIG. 6 is a cross-sectional view showing details of a suction port in a first modification of the centrifugal impeller.
[図 7]遠心羽根車の第 2の変形例を示す断面図である。 [図 8]送風装置の使用態様を説明するための風量ー静圧の特性図である。 FIG. 7 is a cross-sectional view showing a second modification of the centrifugal impeller. FIG. 8 is a characteristic diagram of air volume vs. static pressure for explaining a usage mode of the blower.
[図 9]送風装置を用いた除加湿装置の暖房加湿運転時の状態を示す断面図である。  FIG. 9 is a cross-sectional view showing a state during a heating and humidifying operation of a dehumidifying / humidifying device using a blower.
[図 10]送風装置を用いた除加湿装置の暖房加湿運転時の状態を示す断面図である  FIG. 10 is a cross-sectional view showing a state during a heating and humidifying operation of a dehumidifying / humidifying device using a blower.
[図 11]送風装置における流路開閉手段の第 1の例を示す縦断面図である。 FIG. 11 is a longitudinal sectional view showing a first example of flow path opening / closing means in the blower.
[図 12]流路開閉手段の第 2の例を示す縦断面図である。  FIG. 12 is a longitudinal sectional view showing a second example of the flow path opening / closing means.
[図 13]流路開閉手段の第 3の例を示す縦断面図である。  FIG. 13 is a longitudinal sectional view showing a third example of the flow path opening / closing means.
[図 14]流路開閉手段の第 4の例を示す縦断面図である。  FIG. 14 is a longitudinal sectional view showing a fourth example of the flow path opening / closing means.
[図 15]本願発明の第 2の実施の形態にかかる送風装置の小風量及び高静圧運転時 (例えば、加湿運転時)の状態を示す断面図である。  FIG. 15 is a cross-sectional view showing a state of a small air volume and a high static pressure operation (for example, a humidifying operation) of a blower according to a second embodiment of the present invention.
[図 16]送風装置の大風量及び低静圧運転時 (例えば、除湿運転時)の状態を示す 断面図である。  FIG. 16 is a cross-sectional view showing a state of a large air volume and a low static pressure operation (for example, a dehumidifying operation) of the blower.
[図 17]この種の送風装置における室外の運転音の低減効果を調べた特性図である。  FIG. 17 is a characteristic diagram showing the effect of reducing outdoor operation noise in this type of blower.
[図 18]本願発明の第 3の実施の形態に力かる送風装置の断面図である。  FIG. 18 is a cross-sectional view of an air blower that works on the third embodiment of the present invention.
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0018] 以下、添付の図面を参照して、本願発明の幾つかの好適な実施の形態について 説明する。 [0018] Some preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
[0019] 第 1の実施の形態 [0019] First Embodiment
図 1ないし図 14には、本願発明の第 1の実施の形態に力かる送風装置が示されて いる。  FIG. 1 to FIG. 14 show an air blower that works on the first embodiment of the present invention.
[0020] この送風装置 Xは、図 1および図 2に示すように、遠心羽根車 1と、該遠心羽根車 1 と対向する吸込口 3を有するファンケーシング 2と力もなる。ファンケーシング 2には、 二つの吹出口 4, 5と、前記遠心羽根車 1からその遠心方向に吹き出される空気流を 各吹出口 4, 5へ導く二つの空気流路 6, 7とが形成されている。ファンケーシング 2に は、前記二つの空気流路 6, 7を選択的に開閉する流路開閉手段 8が付設されてい る。  [0020] As shown in Figs. 1 and 2, the blower X also has a force with a centrifugal impeller 1 and a fan casing 2 having a suction port 3 facing the centrifugal impeller 1. The fan casing 2 is formed with two air outlets 4 and 5 and two air flow paths 6 and 7 for guiding an air flow blown in the centrifugal direction from the centrifugal impeller 1 to the air outlets 4 and 5. Has been. The fan casing 2 is provided with channel opening / closing means 8 for selectively opening and closing the two air channels 6 and 7.
[0021] 前記遠心羽根車 1は、駆動源であるファンモータ(図示省略)の回転軸 9に枢支さ れた主板 10の周縁部に多数の後退翼 11が立設されて構成されたシユラウドレスタイ プである。前記各後退翼 11の先端部における外縁には、遠心羽根車 1から吹き出さ れる空気流の一部が各後退翼 11の先端に向かって循環する循環流を生起させて均 一な吹出空気流分布を得るためのリング体 12が形成されている。前記循環流の生起 をより容易に行うために、前記各後退翼 11は、それらの先端が各後退翼 11の内縁か ら外縁に向力うに従 、主板 10に向力つて傾斜して 、る。 [0021] The centrifugal impeller 1 is a shunt configured by a large number of receding blades 11 standing on the peripheral edge of a main plate 10 pivotally supported by a rotating shaft 9 of a fan motor (not shown) as a drive source. Loudress Thai Is. At the outer edge of the tip of each swept blade 11, a part of the air flow blown from the centrifugal impeller 1 circulates toward the tip of each swept blade 11 to generate a uniform blown air flow. A ring body 12 for obtaining the distribution is formed. In order to more easily generate the circulation flow, the receding blades 11 are inclined toward the main plate 10 as their tips are directed from the inner edge to the outer edge of the receding blades 11. .
[0022] 前記ファンケーシング 2は、前記吸込口 3側に位置するスクロール 13と、該スクロー ル 13と対向する半径移行型のディフューザ (吹出空気が羽根の出口力も斜め方向に 向かい、その後に径方向に向力 構造のディフューザ) 14とを備えている。スクロール 13は吹出口 4を有し、該スクロール 13内には前記空気流路 6が形成されている。ディ フューザ 14は吹出口 5を有し、該ディフューザ 14内には前記空気流路 7が形成され ている。前記スクロール 13の周壁部 13aは、遠心羽根車 1の回転軸 9の周囲に形成 されている。このため、スクロール 13の側面にディフューザ 14が連続して形成され、 全体の収納スペースをより一層小さくすることができる。  [0022] The fan casing 2 includes a scroll 13 located on the suction port 3 side, and a radius transition type diffuser facing the scroll 13 (the blown air is directed toward the outlet force of the blades in an oblique direction, and then the radial direction) To the diffuser 14). The scroll 13 has an outlet 4, and the air flow path 6 is formed in the scroll 13. The diffuser 14 has an outlet 5, and the air flow path 7 is formed in the diffuser 14. A peripheral wall portion 13 a of the scroll 13 is formed around the rotary shaft 9 of the centrifugal impeller 1. For this reason, the diffuser 14 is continuously formed on the side surface of the scroll 13, and the entire storage space can be further reduced.
[0023] 前記流路開閉手段 8は、ディフューザ 14の吹出口 5を開閉するダンバにより構成さ れている。該ダンバ 8は、小風量及び高静圧での使用時(図 8の使用点 Aでの使用時 )においては前記ディフューザ 14への空気流を遮断するように吹出口 5を閉鎖し、大 風量及び低静圧での使用時(図 8の使用点 Bでの使用時)にお ヽては前記スクロー ル 13およびディフューザ 14への空気流を遮断しないように吹出口 5を開放する。この ため、送風装置は、小風量及び高静圧あるいは大風量及び低静圧での使用に好適 に対応することができる。  [0023] The flow path opening / closing means 8 is configured by a damper that opens and closes the outlet 5 of the diffuser 14. The damper 8 closes the air outlet 5 so as to block the air flow to the diffuser 14 when used at a small air volume and high static pressure (when used at point of use A in FIG. 8). When using at low static pressure (when using at point B in Fig. 8), open the outlet 5 so as not to block the air flow to the scroll 13 and diffuser 14. For this reason, the air blower can be suitably adapted for use with a small air volume and high static pressure or a large air volume and low static pressure.
[0024] スクロール 13からディフューザ 14へ向力 空気流の流れがスムーズとなり、送風装 置の空力性能がより向上することから、図 3に示すように、前記スクロール 13の周壁 部 13aは、好ましくはディフューザ 14に向力うに従いファンケーシング 2の外方へ傾 斜している。また、図 4に示すように、前記ディフューザ 14は斜流タイプでもよい。  [0024] Since the flow of air flow from the scroll 13 to the diffuser 14 becomes smoother and the aerodynamic performance of the blower device is further improved, the peripheral wall portion 13a of the scroll 13 is preferably as shown in FIG. The fan casing 2 is tilted outward as it is directed to the diffuser 14. Further, as shown in FIG. 4, the diffuser 14 may be a mixed flow type.
[0025] 図 5に示すように、遠心羽根車 1の主板 10の周縁部 10aが切除され(図 5の仮想線 参照)、各後退翼 11の基端部の外縁が開放されることにより、送風装置の空力性能 が向上する。図 6に示すように、送風装置に吸い込まれた空気流を遠心羽根車 1へ 効果的に導くために、吸込口 3の内端は、好ましくは端縁に向かうに従い後退翼 11 に向力つて傾斜するように斜状に形成されて 、る。遠心羽根車 1の各後退翼 11の内 縁は、図 5では該後退翼 11の先端から基端に向かうに従 、回転軸 9の回転中心に 向かって傾斜している力 図 2〜図 4に示すように、回転軸 9の回転中心と平行であつ てもよい。また、遠心羽根車 1の各後退翼 11の内縁にセレーシヨン 15 (図 5の仮想線 参照)が形成されてもよい。この構成により、送風音を若干 (例えば、 1〜0. 5dBA) 低減することができる。 [0025] As shown in FIG. 5, the peripheral edge portion 10a of the main plate 10 of the centrifugal impeller 1 is cut away (see the phantom line in FIG. 5), and the outer edge of the base end portion of each receding blade 11 is opened. The aerodynamic performance of the blower is improved. As shown in FIG. 6, in order to effectively guide the air flow sucked into the air blower to the centrifugal impeller 1, the inner end of the suction port 3 is preferably moved backward as it moves toward the end edge. It is formed in a slanted shape so as to incline with force. In FIG. 5, the inner edge of each swept blade 11 of the centrifugal impeller 1 is inclined toward the rotation center of the rotating shaft 9 as it goes from the front end to the base end of the swept blade 11. As shown in FIG. 5, the rotation axis 9 may be parallel to the rotation center. Further, a selection 15 (see a virtual line in FIG. 5) may be formed on the inner edge of each receding blade 11 of the centrifugal impeller 1. With this configuration, the blowing sound can be slightly reduced (for example, 1 to 0.5 dBA).
[0026] 図 7に示すように、遠心羽根車 1は、モータ回転軸 9に枢支される主板 10と、該主板 10の周縁部と対向して配置されたシユラウド 16との間に複数の後退翼 11が挟持され たタイプでもよい。この場合、遠心羽根車 1が容易に成形されることから、好ましくは 主板 10の周縁部が切除されて各後退翼 11の基端部が開放されている。ファンケー シング 2において吸込口 3の周縁部には、前記シュラウド 16の内端が臨む環状溝 17 が形成されている。  As shown in FIG. 7, the centrifugal impeller 1 includes a plurality of blades between a main plate 10 that is pivotally supported by a motor rotating shaft 9 and a shroud 16 that is disposed to face the peripheral edge of the main plate 10. A type in which the swept wing 11 is sandwiched may be used. In this case, since the centrifugal impeller 1 is easily formed, the peripheral portion of the main plate 10 is preferably cut off and the base end portion of each receding blade 11 is opened. In the fan casing 2, an annular groove 17 is formed at the peripheral edge of the suction port 3 so that the inner end of the shroud 16 faces.
[0027] ついで、図 9および図 10を参照して、本願発明の送風装置を除加湿装置に使用し た場合について説明する。  Next, with reference to FIG. 9 and FIG. 10, the case where the air blower of the present invention is used in a dehumidifying / humidifying device will be described.
[0028] この除加湿装置 Yは室外に設置されるものであり、ケーシング 19を備えている。ケ 一シング 19の前面には、複数の空気吸込口 18が形成されている。ケーシング 19内 には、前記各空気吸込口 18と対向するとともにヒータを内蔵する吸着エレメント 20と 、本願発明の実施の形態に力かる送風装置 Xとが配設されている。前記ケーシング 1 9の上下両側面の後部および背面の上下両端部には、空気吹出口 21, 22が形成さ れている。前記送風装置 Xにおけるスクロール 13の吹出口 4には、連結管 23を介し て室内機(図示省略)へ通じるホース 24が接続されている。ケーシング 19内は、仕切 板 25によって吸込側と吹出側とに区画されている。回転軸 9にはファンモータ 26が 取り付けられている。  The dehumidifying / humidifying device Y is installed outside the room and includes a casing 19. A plurality of air inlets 18 are formed on the front surface of the casing 19. In the casing 19, there are disposed an adsorbing element 20 that faces each of the air inlets 18 and incorporates a heater, and a blower X that works on the embodiment of the present invention. Air outlets 21 and 22 are formed at the rear part of the upper and lower side surfaces of the casing 19 and the upper and lower end parts of the rear surface. A hose 24 that leads to an indoor unit (not shown) is connected to the outlet 4 of the scroll 13 in the blower X via a connecting pipe 23. The inside of the casing 19 is divided into a suction side and a blowout side by a partition plate 25. A fan motor 26 is attached to the rotary shaft 9.
[0029] この除加湿装置 Yにおいては、例えばバッチ式の暖房加湿運転の場合、まず吸着 エレメント 20に水分を溜めるために、室外の空気力も水分を吸着エレメント 20に吸湿 させる必要がある。この場合、除加湿装置 Yは、多量の室外の空気を吸い込んで、除 湿された空気を室外に排出させる必要があることから、除加湿装置 Y内は大風量及 び低静圧となる。そのため、送風装置 Xは、図 8の使用点 Bでの運転となる。従って、 図 9に示すように、ダンバ 8は吹出口 5を開放し、二つの空気流路 6, 7への空気の流 通によって大風量及び低静圧に対処する。以下の説明において、室外の空気から 水分を吸着エレメント 20に吸湿させることを除湿運転という。 In this dehumidifying / humidifying device Y, for example, in the case of a batch heating / humidifying operation, first, in order to collect moisture in the adsorption element 20, it is necessary that the outdoor aerodynamic force also absorbs moisture into the adsorption element 20. In this case, since the dehumidifying / humidifying device Y needs to suck in a large amount of outdoor air and discharge the dehumidified air to the outside, the dehumidifying / humidifying device Y has a large air volume and a low static pressure. Therefore, the blower X is operated at the point of use B in FIG. Therefore, As shown in FIG. 9, the damper 8 opens the outlet 5 and copes with a large air volume and a low static pressure by the air flow to the two air flow paths 6 and 7. In the following description, dehumidifying operation refers to absorbing moisture from outdoor air into the adsorption element 20.
[0030] 次いで、室内を加湿するために、吸着エレメント 20に吸湿されている水分を内蔵ヒ ータで吸着エレメント 20から脱離させることにより得られる水蒸気力 空気流とともに ホース 24を介して室内機へ搬送される。この場合、除加湿装置 Yは少量の室外の空 気を吸い込むだけでよぐ除加湿装置 Y内が小風量及び高静圧となるところから、送 風装置 Xは、図 8の使用点 Aでの運転となる。従って、図 10に示すように、ダンバ 8に よってディフューザ 14の出口である吹出口 5が閉鎖されて空気流路 7への空気の流 通が遮断され、スクロール 13内の空気流路 6が開放される。  [0030] Next, in order to humidify the room, the water vapor absorbed by the adsorption element 20 is desorbed from the adsorption element 20 by the built-in heater, and the indoor unit through the hose 24 together with the steam force and air flow. It is conveyed to. In this case, the dehumidifying / humidifying device Y only needs to suck in a small amount of outdoor air, and the dehumidifying / humidifying device Y has a small air volume and high static pressure. Driving. Therefore, as shown in FIG. 10, the damper 8 closes the outlet 5 which is the outlet of the diffuser 14, blocks the air flow to the air flow path 7, and opens the air flow path 6 in the scroll 13. Is done.
[0031] 次に、図 11ないし図 14を参照して、流路開閉手段 8について説明する。  Next, the flow path opening / closing means 8 will be described with reference to FIG. 11 to FIG.
[0032] 図 11に示す流路開閉手段 8は、ディフューザ 14からの空気の出口である吹出口 5 を開閉するダンバにより構成されている。ダンバ 8は、水平方向への移動により吹出 口 5を開閉する。この場合、ディフューザ 14内に空気のよどみができることから、送風 装置 Xの性能が劣化するおそれがある。  The channel opening / closing means 8 shown in FIG. 11 is configured by a damper that opens and closes the air outlet 5 that is an outlet for air from the diffuser 14. The damper 8 opens and closes the outlet 5 by moving in the horizontal direction. In this case, air stagnation is generated in the diffuser 14, and the performance of the blower X may be deteriorated.
[0033] 図 12に示す流路開閉手段 8は、ディフューザ 14への空気の入口(換言すれば、ス クロール 13の背面)を開閉するダンバにより構成されている。ダンバ 8は、水平方向 への移動によりディフューザ 14への空気の入口を開閉する。この場合、ディフューザ 14内に空気のよどみができないことから、送風装置 Xの性能が向上する。  The channel opening / closing means 8 shown in FIG. 12 is composed of a damper that opens and closes an air inlet to the diffuser 14 (in other words, the back surface of the scroll 13). The damper 8 opens and closes the air inlet to the diffuser 14 by moving in the horizontal direction. In this case, the stagnation of air in the diffuser 14 is not possible, so that the performance of the blower X is improved.
[0034] 図 13に示す流路開閉手段 8は、スクロール 13からの空気の出口である吹出口 4を 開閉するダンバにより構成されている。ダンバ 8は、上下方向への移動により吹出口 4 を開閉する。この場合、スクロール 13の出口部分に空気のよどみができることから、 送風装置 Xの性能が劣化するおそれがある。  The flow path opening / closing means 8 shown in FIG. 13 is configured by a damper that opens and closes the air outlet 4 that is an outlet for air from the scroll 13. The damper 8 opens and closes the outlet 4 by moving in the vertical direction. In this case, air stagnation is generated at the exit portion of the scroll 13, so that the performance of the blower X may be deteriorated.
[0035] 図 14に示す流路開閉手段 8は、スクロール 13からの空気の出口部分における内方 を開閉するダンバにより構成されている。ダンバ 8は、上下方向への移動により前記 出口部分を開閉する。この場合、スクロール 13からの空気の出口部分に空気のよど みができないことから送風装置 Xの性能が向上する力 スクロール 13への空気流を 遮断しないものに比べて送風装置 Xの性能が劣化する。 [0036] 第 2の実施の形態 The channel opening / closing means 8 shown in FIG. 14 is composed of a damper that opens and closes the inside of the outlet portion of the air from the scroll 13. The damper 8 opens and closes the outlet portion by moving in the vertical direction. In this case, the ability to improve the performance of the blower X because the air does not stagnate at the outlet of the air from the scroll 13 The performance of the blower X deteriorates compared to that that does not block the air flow to the scroll 13 . [0036] Second Embodiment
図 15および図 16には、本願発明の第 2の実施の形態に力かる送風装置が示され ている。  FIG. 15 and FIG. 16 show an air blower that can be applied to the second embodiment of the present invention.
[0037] 送風装置 Xは室外に設置されて使用されるものであり、該送風装置 Xにおけるスク ロール 13の吹出口 4には、室内機(図示省略)へ通じるホース 24が接続されている。 このホース 24は、室外力も室内への空気搬送流路を構成している。ホース 24は、大 きな圧力損失 (例えば、 1300Pa)を有する可撓性部材カもなり、前記吹出口 4から吹 き出される空気流に対して大きな圧損を付与する圧損付与部材として作用する。この 送風装置 Xにおけるディフューザ 14の吹出口 5には流路開閉手段として作用するダ ンパ 8が付設されている力 スクロール 13の吹出口 4には流路開閉手段が設けられ ていない。  [0037] The blower X is installed and used outside the room, and a hose 24 leading to an indoor unit (not shown) is connected to the outlet 4 of the scroll 13 in the blower X. The hose 24 also constitutes an air conveyance channel into the room for outdoor force. The hose 24 also serves as a flexible member having a large pressure loss (for example, 1300 Pa), and acts as a pressure loss imparting member that imparts a large pressure loss to the air flow blown from the outlet 4. The blower outlet 5 of the diffuser 14 in the blower X is provided with a damper 8 acting as a flow path opening / closing means. The flow outlet 13 of the force scroll 13 is not provided with a flow path opening / closing means.
[0038] 上記構成の送風装置 Xが暖房加湿運転用として使用される場合、図 15に示すよう に、送風装置 Xは、室内の加湿時にはディフューザ 14のダンバ 8が吹出口 5を閉鎖し た状態で使用される。このとき、スクロール 13の吹出口 4からはホース 24を介して小 風量の加湿された空気が吹き出される。この場合、送風装置 Xは、図 8の A点で示す 小風量及び高静圧での運転となる。また、除湿運転時には、図 16に示すように、送 風装置 Xは、ディフューザ 14のダンバ 8が吹出口 5を開放した状態で使用される。こ のとき、ディフューザ 14の吹出口 5からは大風量の除湿された空気が吹き出されるが 、スクロール 13からはホース 24を介して極めて少量の除湿された空気が吹き出され る。この場合、送風装置 Xは、図 8の B点で示す大風量及び低静圧での運転となる。 除湿された空気がホース 24を介して極めて少量流れる力 この除湿された空気は、 換気用の空気としても利用可能である。更に、ホース 24内を流れる空気は除湿され て!、ることから、ホース 24内面への結露の心配もな!/、。  [0038] When the air blower X having the above configuration is used for heating and humidifying operation, as shown in FIG. 15, the air blower X is in a state in which the damper 8 of the diffuser 14 closes the air outlet 5 during indoor humidification. Used in. At this time, a small amount of humidified air is blown out from the outlet 4 of the scroll 13 through the hose 24. In this case, the blower X is operated with a small air volume and a high static pressure as indicated by point A in FIG. Further, during the dehumidifying operation, as shown in FIG. 16, the air blowing device X is used in a state where the damper 8 of the diffuser 14 opens the air outlet 5. At this time, a large amount of dehumidified air is blown out from the outlet 5 of the diffuser 14, but a very small amount of dehumidified air is blown out from the scroll 13 through the hose 24. In this case, the blower X is operated with a large air volume and a low static pressure indicated by point B in FIG. The force by which dehumidified air flows in a very small amount through the hose 24. This dehumidified air can also be used as ventilation air. Furthermore, the air flowing in the hose 24 is dehumidified! Because of this, there is no worry of condensation on the inner surface of the hose 24!
[0039] 除湿運転時における室外の運転音を、スクロール 13にダンバが設けられた場合と、 該ダンバが設けられて 、な 、場合 (本実施の形態の場合)とにっ 、て調べたところ、 図 17の結果が得られた。  [0039] The outdoor operation sound during the dehumidifying operation was examined when the scroll 13 was provided with a damper and when the damper was provided (in the case of the present embodiment). The result of Fig. 17 was obtained.
[0040] 上記結果によれば、ダンバが吹出口 5を完全に閉鎖している場合、空洞部の不安 定な流れにより運転音が高く(C点参照:基準値)、ダンバが省略されており、かつ空 気が室外へ吹出される場合、運転音は基準値に比べ大きく低減される(D点参照)。 また、ダンバが吹出口 5を完全に閉鎖しており、かつ空気が室外へ吹出される場合、 ダンバでは音が発生するものの、この音は基準値より低減されている(E点参照)。以 上はスクロール 13にダンバが設けられたものについての結果である。 [0040] According to the above results, when the damper completely closed the outlet 5, the operation sound was high due to the unstable flow of the cavity (see point C: reference value), and the damper was omitted. And empty When qi is blown out, the driving noise is greatly reduced compared to the reference value (see point D). In addition, when the damper closes the outlet 5 completely and air is blown outside the room, noise is generated in the damper, but this noise is reduced from the reference value (see point E). The above is the result for the scroll 13 with a damper.
[0041] 一方、本実施の形態のように、スクロール 13にダンバが設けられていない場合、た とえホースが短くても運転音が相当に低減され (F点参照)、ホースが長 、と運転音は さらに低減される (G点参照)。  [0041] On the other hand, if the scroll 13 is not provided with a damper as in the present embodiment, even if the hose is short, the operation noise is considerably reduced (see point F), and the hose is long. Driving noise is further reduced (see point G).
[0042] 上記したように、本実施の形態においては、スクロール 13に流路開閉手段として作 用するダンバ 8が設けられていなくても、吹出口 5の開放時においては圧損付与部材 として作用するホース 24の存在によりスクロール 13からの空気の吹出はほとんど得ら れず、ディフューザ 14のみ力も空気が吹き出される。そのため、送風装置 Xは吸湿用 ファンとして最適なものとなる。一方、吹出口 5の閉鎖時においてはスクロール 13の み力も空気が吹き出され、送風装置 Xは加湿用ファンとして最適なものとなる。し力も 、前述したように、本実施の形態は運転音の低減にも大いに寄与する。  [0042] As described above, in the present embodiment, even when the scroll 13 is not provided with the damper 8 serving as the channel opening / closing means, it acts as a pressure loss imparting member when the air outlet 5 is opened. Due to the presence of the hose 24, almost no air is blown out from the scroll 13, and only the diffuser 14 is blown out. Therefore, the blower X is optimal as a moisture absorption fan. On the other hand, when the air outlet 5 is closed, air is also blown out only by the scroll 13, and the blower X is optimal as a humidifying fan. As described above, the present embodiment greatly contributes to the reduction of driving sound.
[0043] 第 3の実施の形態  [0043] Third Embodiment
図 18には、本願発明の第 3の実施の形態に力かる送風装置が示されている。  FIG. 18 shows a blower that works on the third embodiment of the present invention.
[0044] スクロール 13の後板 13bの外方には、延設部 27が前記遠心方向へ延びるように、 かつ後板 13bと一体に延設されている。この延設部 27は、前記ディフューザ 14の前 板 14aを兼用している。この場合、送風装置 Xにおける遠心羽根車 1の軸方向の寸 法 Lを可及的に小さくすることができることから、送風装置 Xの占有に要するスペース を小さくすることができる。その他の構成および作用効果は、第 1の実施の形態と同 様である。  [0044] On the outside of the rear plate 13b of the scroll 13, an extending portion 27 is extended integrally with the rear plate 13b so as to extend in the centrifugal direction. The extending portion 27 also serves as the front plate 14a of the diffuser 14. In this case, since the dimension L in the axial direction of the centrifugal impeller 1 in the blower X can be made as small as possible, the space required to occupy the blower X can be reduced. Other configurations and operational effects are the same as those of the first embodiment.
[0045] 本願発明は、上記各実施の形態に限定されるものではなぐ発明の要旨を逸脱し な 、範囲にぉ 、て適宜設計変更可能であることは勿論である。  [0045] The present invention is not limited to the above-described embodiments, and it goes without saying that the design can be changed as appropriate within the scope without departing from the gist of the invention.

Claims

請求の範囲 The scope of the claims
[1] 遠心羽根車(1)と、該遠心羽根車(1)と対向する吸込口(3)を有するファンケーシ ング(2)と力もなる送風装置であって、前記ファンケーシング(2)には、二つの吹出口 (4) , (5)と、前記遠心羽根車(1)からその遠心方向に吹き出される空気流を各吹出 口(4) , (5)へ導く二つの空気流路 (6) , (7)とが設けられ、該二つの空気流路 (6) , (7)のいずれか一方には流路開閉手段 (8)が付設されていることを特徴とする送風 装置。  [1] A blower that also has a force with a centrifugal impeller (1) and a fan casing (2) having a suction port (3) facing the centrifugal impeller (1), the fan casing (2) Has two air outlets (4), (5) and two air passages for guiding the air flow blown in the centrifugal direction from the centrifugal impeller (1) to the air outlets (4), (5). (6), (7) are provided, and one of the two air flow paths (6), (7) is provided with flow path opening / closing means (8). .
[2] 遠心羽根車(1)と、該遠心羽根車(1)と対向する吸込口(3)を有するファンケーシ ング(2)と力もなる送風装置であって、前記ファンケーシング(2)には、二つの吹出口 (4) , (5)と、前記遠心羽根車(1)からその遠心方向に吹き出される空気流を各吹出 口(4) , (5)へ導く二つの空気流路 (6) , (7)とが設けられるとともに、該二つの空気 流路 (6) , (7)を選択的に開閉する流路開閉手段 (8)が付設されていることを特徴と する送風装置。  [2] A blower that also has a force with a centrifugal impeller (1) and a fan casing (2) having a suction port (3) facing the centrifugal impeller (1), the fan casing (2) Has two air outlets (4), (5) and two air passages for guiding the air flow blown in the centrifugal direction from the centrifugal impeller (1) to the air outlets (4), (5). (6) and (7) are provided, and air flow opening and closing means (8) for selectively opening and closing the two air flow paths (6) and (7) is provided. apparatus.
[3] 前記二つの空気流路(6) , (7)力 前記吸込口(3)側に位置するスクロール(13)と [3] The two air flow paths (6), (7) force Scroll (13) located on the suction port (3) side,
、該スクロール ( 13)と対向するディフューザ(14)とから構成されて ヽることを特徴と する請求項 1又は請求項 2に記載の送風装置。 The blower according to claim 1 or 2, wherein the blower is configured by a diffuser (14) facing the scroll (13).
[4] 前記スクロール(13)の周壁部(13a)が、ディフューザ(14)に向力 に従いファンケ 一シング(2)の外方へ傾斜して 、ることを特徴とする請求項 3に記載の送風装置。 [4] The peripheral wall (13a) of the scroll (13) is inclined outwardly of the fan casing (2) according to the directional force of the diffuser (14). Blower device.
[5] 前記流路開閉手段 (8)が、小風量及び高静圧での使用時においては前記ディフユ 一ザ(14)への空気流を遮断し、大風量及び低静圧での使用時においては前記スク ロール( 13)および前記ディフューザ(14)への空気流を遮断しな!、ことを特徴とする 請求項 3又は請求項 4に記載の送風装置。 [5] The flow path opening / closing means (8) shuts off the air flow to the diffuser (14) when used at a small air volume and high static pressure, and when used at a large air volume and low static pressure. The air blower according to claim 3 or 4, wherein air flow to the scroll (13) and the diffuser (14) is not interrupted!
[6] 前記流路開閉手段 (8)が、前記ディフューザ (14)により構成された空気流路 (7)を 開閉することを特徴とする請求項 3から請求項 5のいずれか一項に記載の送風装置。 [6] The flow path opening and closing means (8) opens and closes an air flow path (7) constituted by the diffuser (14). Blower.
[7] 前記スクロール(13)により構成される空気流路(6)の吹出口(4)に、該吹出口(4) 力 吹き出される空気流に対して圧損を付与する圧損付与部材 (24)が設けられて[7] Pressure loss imparting member that imparts pressure loss to the air flow (4) of the air flow path (6) constituted by the scroll (13) with respect to the air flow blown out from the air outlet (4). )
V、ることを特徴とする請求項 6に記載の送風装置。 The blower according to claim 6, wherein V is V.
[8] 前記圧損付与部材 (24)が空気搬送流路により構成されていることを特徴とする請 求項 7に記載の送風装置。 [8] The request characterized in that the pressure loss imparting member (24) is constituted by an air conveyance channel. The blower according to claim 7.
[9] 前記スクロール(13)の後板(13b)の外方には、延設部(27)が前記遠心羽根車(1[9] On the outside of the rear plate (13b) of the scroll (13), an extending portion (27) is provided with the centrifugal impeller (1
)の遠心方向へ延びるように、かつ後板(13b)と一体に延設され、該延設部(27)が 前記ディフューザ(14)の前板(14a)を兼用していることを特徴とする請求項 3から請 求項 8の 、ずれか一項に記載の送風装置。 ) Extending in the centrifugal direction and extending integrally with the rear plate (13b), and the extending portion (27) also serves as the front plate (14a) of the diffuser (14). The blower device according to any one of claims 3 to 8, wherein:
[10] 前記遠心羽根車(1)としてシュラウドレスタイプの遠心羽根車が採用され、前記吸 込口(3)の形状がベルマウス形状であることを特徴とする請求項 1から請求項 9の 、 ずれか一項に記載の送風装置。 10. The shroudless type centrifugal impeller is adopted as the centrifugal impeller (1), and the shape of the suction port (3) is a bell mouth shape. The blower according to any one of the above.
PCT/JP2006/308413 2005-04-21 2006-04-21 Blower device WO2006115197A1 (en)

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