WO2014034942A1 - 送風機 - Google Patents
送風機 Download PDFInfo
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- WO2014034942A1 WO2014034942A1 PCT/JP2013/073621 JP2013073621W WO2014034942A1 WO 2014034942 A1 WO2014034942 A1 WO 2014034942A1 JP 2013073621 W JP2013073621 W JP 2013073621W WO 2014034942 A1 WO2014034942 A1 WO 2014034942A1
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- WIPO (PCT)
- Prior art keywords
- impeller
- flow path
- blower
- slit
- blower according
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0057—Pumps therefor
- A61M16/0066—Blowers or centrifugal pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/42—Reducing noise
Definitions
- the present invention relates to a blower used for a breathing assistance device.
- the respiratory assistance device requires a pump unit for creating a positive pressure in the airway.
- a blower that rotates an impeller (fan) and conveys gas is used.
- the breathing assistance device Since such a breathing assistance device supports comfortable sleep, it is preferable that the breathing assistance device be quiet as much as possible, and that it is ultimately silent. For this reason, noise reduction of the air blower used as the generation source of noise is desired.
- This invention is made
- the present invention includes a casing having a flow path connected to an inlet and an outlet, an impeller disposed in the casing such that the front of the inlet faces the inlet, and a rear side of the impeller. And a partition member that partitions the interior of the housing into a space in which the impeller is disposed and the flow path, and the partition member is between the inner peripheral surface of the housing.
- a blower characterized by forming a slit having a width of 1.0 mm or less extending along the inner peripheral surface of the casing.
- the flow of air sucked from the intake port, the flow of air sent out from the discharge port, Can be separated.
- it can prevent that the flow of the air suck
- noise is generated when air flows through a slit connecting the space where the impeller is disposed and the flow path. This noise can cancel other noises that occur with the rotation of the impeller.
- the present invention is also characterized in that, in the blower of the above means, the flow path extends along the slit.
- the present invention is also characterized in that, in the blower of the above means, the slit has a width of 1.5% or less of an inner peripheral diameter of the casing.
- the present invention is also characterized in that, in the blower of the above means, the flow path has a round cross-sectional shape that is a perfect circle or a shape that is relatively long in the radial direction of the impeller.
- the air that has flowed into the flow path from the space where the impeller is disposed moves smoothly along the side wall, bottom surface, and ceiling surface of the flow path.
- the present invention is also characterized in that the blower of the above means includes a motor for rotating the impeller.
- the present invention is also characterized in that the blower of the above means is arranged in the order of the impeller, the motor, and the flow path in the direction along the rotation axis of the impeller.
- the present invention is also characterized in that the blower of the above means is arranged such that the flow path circulates around the motor.
- the present invention is also characterized in that the blower of the above means includes a rectifying member provided at the center of the intake port so as to protrude to the outside of the intake port.
- the above invention it is possible to prevent the collision of air in the vicinity of the intake port as compared with the case where the rectifying member is not provided or the case where the rectifying member does not protrude to the outside of the intake port and stays inside.
- the air sucked from the intake port collides with the impeller and its rotating shaft.
- such a collision does not occur.
- the rectifying member does not protrude to the outside of the intake port and is housed inside, the inside of the housing is suddenly narrowed by the rectifying member, and the air sucked into the housing collides. No conflicts occur. Thereby, generation
- the present invention is also characterized in that, in the blower of the above means, the rectifying member supports one end of a rotating shaft of the impeller.
- the vibration of the impeller can be prevented.
- generation of noise can be prevented.
- the rectifying member also has a function of supporting one end of the rotating shaft of the impeller, the number of parts can be reduced, and the weight and size can be reduced. As a result, it can be easily carried on overnight trips or business trips.
- the impeller in the blower of the above means, includes a plurality of blades arranged around a rotation shaft, and a covering member that covers the partition member side of the plurality of blades, The intake port side of the plurality of blades is open.
- the present invention is also characterized in that, in the blower of the above means, the covering member has a conical surface protruding toward the intake port side.
- the air sucked into the housing from the air inlet can flow smoothly along the covering member. Therefore, it is possible to prevent the air sucked into the housing from the air inlet from colliding with the covering member. As a result, generation of noise can be prevented.
- the present invention is also characterized in that the blower of the above means is used in a breathing assistance device.
- the noise reduction can be realized, the auditory burden on the patient who uses the respiratory assistance device can be reduced. In other words, it is possible to prevent the patient from using the respiratory assistance device from being disturbed.
- the blower of the above means includes a casing having a flow path connected to the inlet and the outlet, and an impeller disposed in the casing so that the front of the inlet faces the inlet.
- the flow of air sucked from the intake port, the flow of air sent out from the discharge port, Can be separated.
- it can prevent that the flow of the air suck
- noise is generated when air flows through a slit connecting the space where the impeller is disposed and the flow path. This noise can cancel other noises that occur with the rotation of the impeller.
- the ventilation path is formed in the partition member, the exhalation of the patient that has flowed back into the flow path flows through the ventilation path and escapes from the flow path.
- fighting since fighting is prevented, exhalation is prevented from becoming difficult to exhale.
- the present invention is also characterized in that, in the blower of the above means, the flow path extends along the slit.
- the present invention is also characterized in that, in the blower of the above means, the air passage is formed so as to face the back surface of the impeller.
- a negative pressure is generated in the gap between the rear surface of the impeller and the partition member due to the centrifugal force generated by the rotation of the impeller.
- the patient's exhaled air that has flowed back into the flow path can be pulled to the ventilation path by the negative pressure generated by the centrifugal force generated by the rotation of the impeller. This reliably prevents the patient's exhaled air that has flowed back into the flow path from colliding with the air that flows into the flow path through the slit (air that is inhaled by the patient) in the vicinity of the slit.
- the present invention is also characterized in that, in the blower of the above means, the slit has a width of 1.0 mm or less.
- FIG. 1 It is a figure which shows the air blower which concerns on 2nd Embodiment of this invention, (A) is a longitudinal cross-sectional view, (B) is a top view of an impeller and a partition member. It is a figure which shows the air blower which concerns on 3rd Embodiment of this invention, (A) is a longitudinal cross-sectional view, (B) is a top view of an impeller and a partition member.
- FIG. 1 is a top view of the blower 10.
- FIG. 2 is a front view of the blower 10.
- FIG. 3 is a longitudinal sectional view of the blower 10.
- FIG. 4 is a top view of the impeller 13.
- FIG. 5 is a cross-sectional view of the flow path 22.
- FIG. 6 is a graph showing the relationship between the width w of the slit d extending (circulating) along the inner peripheral surface of the housing 11 and the noise cancellation level.
- the horizontal axis indicates the width w of the slit d and the vertical axis indicates the relationship. Indicates the noise cancellation level.
- a part of the configuration, hatching showing a cross section, and the like are omitted as appropriate, and the drawings are simplified. And in each figure, the magnitude
- the blower 10 shown in FIGS. 1 to 3 is a power source of a pump unit necessary for a respiratory assistance device used by a patient with respiratory disorder and blows air to create a positive pressure in the airway. Note that one or a plurality of blowers 10 are appropriately incorporated in the pump unit. In addition, one or more pump units are appropriately connected to the respiratory assistance device.
- the blower 10 includes a housing 11, a rectifying member 12, an impeller 13, a motor 14, and a partition member 15.
- the casing 11 is a blower 10 main body molded from resin, and has an upper portion 11a having a substantially truncated cone in appearance, a lower portion 11b having a substantially cylindrical shape, and a discharge pipe 11c extending laterally from the lower portion 11b. And.
- the upper part 11a is smoothly curved upward. And the upper part 11a has the circular inlet 16 at the upper end.
- a bearing 11d that functions as a bearing that supports the rotating shaft 18 of the impeller 13 is embedded in the lower portion 11b.
- the discharge pipe 11c has a discharge port 17 at the tip.
- Such a casing 11 takes in air from the intake port 16 and sends out air from the discharge port 17. In addition, it is not limited to air, Other gases, such as air which mixed the chemical
- the rectifying member 12 is similar to a gas turbine type jet engine and has a shape with a protruding tip.
- the rectifying member 12 is provided at the center of the intake port 16 so as to protrude to the outside of the intake port 16.
- the rectifying member 12 is connected and fixed to the edge of the air inlet 16 by, for example, three connecting members 12a. Further, the rectifying member 12 is embedded with a bearing 12 b and also serves as a bearing that supports the rotating shaft 18 of the impeller 13.
- the impeller 13 shown in FIGS. 3 and 4 is arranged in the housing 11 so that the front face of the impeller 13 faces the intake port 16. That is, the impeller 13 is located closer to the intake port 16 in the direction of the rotation shaft 18 than the flow path 22 described later.
- the impeller 13 includes a plurality of blades 19 disposed around the rotation shaft 18 and a covering member 20 that covers the back side (the lower side in FIG. 3) of the plurality of blades 19. And as for the impeller 13, the inlet 16 side of the some blade
- the plurality of blades 19 are formed integrally with the covering member 20.
- the covering member 20 has an umbrella shape protruding toward the intake port 16 side. That is, the covering member 20 has a conical surface that protrudes toward the intake port 16.
- a space for arranging the motor 14 and the like is formed on the back side (the lower side in FIG. 3) of the covering member 20.
- the rotating shaft 18 of the impeller 13 is supported at both ends by a bearing 11 d embedded in the housing 11 and a bearing 12 b embedded in the rectifying member 12.
- the motor 14 shown in FIG. 3 is provided to be slightly accommodated on the back side (lower side in FIG. 3) of the impeller 13 (the covering member 20).
- the motor 14 serves as a power source for rotating the impeller 13 about the rotation shaft 18.
- the rotation speed is preferably about 10000 [rpm] to 20000 [rpm].
- the partition member 15 is disposed on the back side of the impeller 13 so as to partition the inside of the housing 11 into a space 21 in which the impeller 13 is disposed and a flow path 22 connected to the discharge port 17.
- the partition member 15 forms a slit d having a width w of 1.0 mm or less extending along the inner peripheral surface of the casing 11 between the inner peripheral surface of the casing 11. From the viewpoint of reducing noise, the slit d is preferably 0.6 mm or less, and from the viewpoint of further reducing energy loss, the slit d is more preferably 0.6 mm. As shown in FIG.
- the noise cancellation level is gradually decreased, and when the slit d is larger than 1.0 mm, the noise cancellation level is rapidly decreased. This is because the energy loss increases as the slit d becomes narrower.
- the slit d has a width w of 1.5% or less of the inner peripheral diameter D of the housing 11.
- the flow path 22 shown in FIGS. 3 and 5 is arranged in a concentric annular shape (annular shape with a constant cross-sectional area) so as to go around the motor 14 so as to extend along the slit d, and is connected to the discharge pipe 11c.
- the flow path 22 is slightly below the motor 14 (in FIG. 3) so that the impeller 13, the motor 14, and the flow path 22 are arranged in this order along the rotation axis 18 of the impeller 13. (Below).
- the flow path 22 is most preferably circular in cross section, and then has a relatively long shape in the radial direction of the impeller 13 (left and right direction in FIG. 3). .
- the flow path 22 has a relatively long shape in the radial direction of the impeller 13 (see FIG. 3) as a cross-sectional shape cut into a ring shape for downsizing (thinning) in the height direction (vertical direction in FIG. 3). 3, L w > L h ) is adopted. Moreover, it is preferable that the flow path 22 is set as large as possible in the cross-sectional area cut
- the air in the space 21 in which the impeller 13 is arranged moves in the outer peripheral direction (left and right direction in FIG. 3), so that the pressure near the outer periphery (left and right side in FIG. 3) of the space 21 is increased. Accordingly, the air in the space 21 in which the impeller 13 is arranged moves from the slit d toward the flow path 22. That is, an air flow is generated from the space 21 in which the impeller 13 is disposed toward the flow path 22.
- the air that has moved from the slit d toward the flow path 22 moves along the wall surface, bottom surface, and ceiling surface of the flow path 22. Further, the air moving from the slit d toward the flow path 22 is subjected to a force that rotates in the rotation direction (clockwise) of the impeller 13 due to the rotation of the impeller 13. For this reason, as shown in FIG. 5, the air that has moved from the slit d toward the flow path 22 rotates clockwise in the flow path 22. Thereafter, the air rotated clockwise in the flow path 22 is sent out from the discharge port 17 through the discharge pipe 11c.
- the blower 110 is a power source of a pump unit that is necessary for a respiratory assistance device used by a patient with respiratory impairment, and blows air to create a positive pressure in the airway, like the blower 10 according to the above embodiment.
- the blower 110 does not include a rectifying member. And as for the air blower 110, the clearance gap between a blade
- the blower 110 employs a one-stage structure in which a space in which the impeller is disposed and a flow path connected to the discharge port are continuous. That is, the blower 110 does not include a configuration corresponding to the slit d of the blower 10 according to the above embodiment. Further, the blower 110 has a scroll shape (spiral shape) in which the cross-sectional area of the flow passage gradually increases toward the discharge port.
- the air blower 110 is arrange
- the blower 110 is employed in a continuous automatic positive airway pressure unit (trade name: Jasmine) sold by Metran Co., Ltd. (Kawaguchi City, Saitama Prefecture).
- Experiment 1 First, Experiment 1 in which noise reduction by the rectifying member was examined will be described.
- the noise level [dB] between the master blower 110 and the blower 110 with a rectifying member attached thereto was compared.
- the noise level was reduced by about 1.7 [dB] to 2.5 [dB] by attaching the rectifying member.
- the sound power [dB] was reduced in the mid-high range of about 750 [Hz] or higher.
- Experiment 2 will be described in which the influence of noise on the gap between the blades and the inner peripheral surface of the casing is examined.
- the noise level [dB] between the blower 110 serving as a master and the fan 110 attached with a rectifying member and the gap between the blades and the inner peripheral surface of the casing being narrowed to 0.8 [mm] Compared.
- the noise level was reduced by about 3.8 [dB] to 4.2 [dB] by attaching the rectifying member and narrowing the gap between the blade and the inner peripheral surface of the casing to 0.8 [mm].
- the acoustic power [dB] is reduced particularly in the middle and low range of about 3200 [Hz] or less by attaching the rectifying member and narrowing the gap between the blade and the inner peripheral surface of the casing to 0.8 [mm].
- the acoustic power [dB] is reduced in the mid-low range by narrowing the gap between the blade and the inner peripheral surface of the casing to 0.8 [mm].
- the blower 10 according to the present embodiment has a noise level that is lower by about 1.4 [dB] to 3.0 [dB] than the above-mentioned products of other companies that achieve the world's highest level of low noise. It was.
- the blower 10 according to the present embodiment has an acoustic power [dB] in a middle range of about 750 [Hz] or more and about 6400 [Hz] or less as compared with the above-mentioned other company products that achieve the world's highest level of low noise. Reduced.
- the blower 10 since the two-stage structure of the space 21 in which the impeller 13 is disposed and the flow path 22 connected to the discharge port 17 is adopted, the flow of air sucked from the intake port 16, The flow of air sent out from the discharge port 17 can be separated. Thereby, it is possible to prevent the air flow sucked from the intake port 16 and the air flow sent from the discharge port 17 from colliding with each other. That is, it is possible to prevent the generation of noise due to the air flows colliding with each other.
- noise is generated when air flows through the slit d connecting the space 21 in which the impeller 13 is disposed and the flow path 22. Due to this noise, other noises generated with the rotation of the impeller 13 can be canceled.
- the flow path 22 is arranged so as to circulate around the motor 14, it is possible to reduce the size of the impeller 13 in the direction of the rotating shaft 18.
- the rectifying member 12 is provided so as to protrude to the outside of the intake port 16, the case where the rectifying member is not provided, or the case where the rectifying member does not protrude to the outside of the intake port 16 and is inside. In comparison, the collision of air in the vicinity of the intake port 16 can be prevented. For example, when the rectifying member is not provided, the air sucked from the intake port 16 collides with the impeller 13 and the rotating shaft 18, but such a collision does not occur in the blower 10. Further, when the rectifying member does not protrude to the outside of the intake port 16 and is housed inside, the inside of the housing 11 is suddenly narrowed by the rectifying member, and the air sucked into the housing 11 collides. Such a collision does not occur in the blower 10 of FIG. Thereby, generation
- the straightening member 12 supports one end of the rotating shaft 18 of the impeller 13, the vibration of the impeller 13 can be prevented. As a result, generation of noise can be prevented.
- the rectifying member 12 also has a function of supporting one end of the rotating shaft 18 of the impeller 13, the number of parts can be reduced, and weight reduction and size reduction can be realized. As a result, it can be easily carried on overnight trips or business trips.
- the weight and size can be reduced as compared with the case where a covering member that covers the air inlet 16 side of the plurality of blades 19 is provided. Can be realized. As a result, it can be easily carried on overnight trips or business trips.
- the covering member 20 has a conical surface protruding toward the intake port 16, the air sucked into the housing 11 from the intake port 16 can flow smoothly along the covering member 20. Thereby, it is possible to prevent the air sucked into the casing 11 from the intake port 16 from colliding with the covering member 20. As a result, generation of noise can be prevented.
- FIG. 8A is a longitudinal sectional view of the blower 30.
- FIG. 8B is a top view of the impeller 13 and the partition member 35. The flow of exhalation of the patient is indicated by a white arrow.
- the blower 30 includes a partition member 35 instead of the partition member 15 (see FIG. 3) of the first embodiment.
- the partition member 35 is formed with a plurality of ventilation paths 35a so as to cut out the outer peripheral portion. Specifically, six air passages 35a are formed in the partition member 35 at equal intervals so as to cut out the outer peripheral portion.
- the plurality of ventilation paths 35 a connect the space 21 and the flow path 22.
- the plurality of ventilation paths 35a function as paths for letting the patient's exhalation flowing back into the flow path 22 escape to the space 21 on the impeller 13 side.
- the exhalation of the patient that has flowed back to the flow path 22 flows through the ventilation path 35a and escapes from the flow path 22.
- the exhaled air of the patient that has flowed back through the flow path 22 collides with the air that flows into the flow path 22 through the slit d (the air that is inhaled by the patient) near the slit d (so-called “fighting”). Is prevented. That is, it is possible to prevent the generation of noise due to collision between exhaled air and inhaled air. In addition, since fighting is prevented, exhalation is prevented from becoming difficult to exhale.
- FIG. 9A is a longitudinal sectional view of the blower 40.
- FIG. 9B is a top view of the impeller 13 and the partition member 45. The flow of exhalation of the patient is indicated by a white arrow.
- the blower 40 includes a partition member 45 instead of the partition member 15 (see FIG. 3) of the first embodiment.
- a plurality of ventilation paths 45 a are formed inside the slit d independently from the slit d so as to penetrate at a position along the inner peripheral portion.
- six ventilation paths 45a are formed at equal intervals in the partition member 45 so as to penetrate at positions along the inner peripheral portion.
- the plurality of ventilation paths 45 a connect the space 21 and the flow path 22.
- the plurality of air passages 45 a are formed so as to face the back surface of the impeller 13.
- the plurality of ventilation paths 45a function as paths for letting the patient's exhalation flowing back into the flow path 22 escape to the space 21 on the impeller 13 side.
- the position, size (dimension), shape, material, orientation, and quantity of each component can be changed as appropriate.
- the positions, sizes, shapes, quantities, etc. of the air passages 35a, 45a can be changed as appropriate.
- the size and quantity of the air passages 35a and 45a may be appropriately set according to the patient's vital capacity.
- the air passages 35 a and 45 a are formed in the partition members 35 and 45, but the air passage may be formed in the impeller 13.
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Abstract
Description
11 筐体
12 整流部材
13 羽根車
14 モーター
15,35,45 仕切り部材
16 吸気口
17 吐出口
18 回転軸
19 羽根
20 被覆部材
21 空間
22 流路
35a,45a 通気路
w 幅
d スリット
D 内周直径
Claims (16)
- 吸気口、及び吐出口に繋がる流路を有する筐体と、
前記吸気口に自身の正面が面するように前記筐体内に配置される羽根車と、
前記羽根車の背面側に配置されることで、前記筐体の内部を、前記羽根車が配置される空間及び前記流路に仕切る仕切り部材と、を備え、
前記仕切り部材は、前記筐体の内周面との間に、該筐体の内周面に沿って延びる1.0mm以下の幅のスリットを形成することを特徴とする、
送風機。 - 前記流路は、前記スリットに沿って延びることを特徴とする、
請求の範囲1に記載の送風機。 - 前記スリットは、前記筐体の内周直径の1.5%以下の幅であることを特徴とする、
請求の範囲1又は2に記載の送風機。 - 前記流路は、輪切りにした断面形状が真円又は前記羽根車の半径方向に相対的に長い形状であることを特徴とする、
請求の範囲1~3のいずれかに記載の送風機。 - 前記羽根車を回転させるモーターを備えることを特徴とする、
請求の範囲1~4のいずれかに記載の送風機。 - 前記羽根車の回転軸に沿った方向に、該羽根車、前記モーター、前記流路の順に配置されることを特徴とする、
請求の範囲5に記載の送風機。 - 前記流路は、前記モーターを周回するように配置されることを特徴とする、
請求の範囲5又は6に記載の送風機。 - 前記吸気口の中心に、該吸気口の外側に突出するように設けられた整流部材を備えることを特徴とする、
請求の範囲1~7のいずれかに記載の送風機。 - 前記整流部材は、前記羽根車の回転軸の一端を支持することを特徴とする、
請求の範囲8に記載の送風機。 - 前記羽根車は、回転軸の周りに配置された複数の羽根と、前記複数の羽根の前記仕切り部材側を覆う被覆部材と、を備えてなり、前記複数の羽根の前記吸気口側が開放していることを特徴とする、
請求の範囲1~9のいずれかに記載の送風機。 - 前記被覆部材は、前記吸気口側に突出する円錐面を有することを特徴とする、
請求の範囲10に記載の送風機。 - 呼吸補助装置に用いられることを特徴とする、
請求の範囲1~11のいずれかに記載の送風機。 - 吸気口、及び吐出口に繋がる流路を有する筐体と、
前記吸気口に自身の正面が面するように前記筐体内に配置される羽根車と、
前記羽根車の背面側に配置されることで、前記筐体の内部を、前記羽根車が配置される空間及び前記流路に仕切る仕切り部材と、を備え、
前記仕切り部材は、前記筐体の内周面との間に、該筐体の内周面に沿って延びるスリットを形成し、
前記仕切り部材には、前記空間及び前記流路を繋ぐ通気路が形成されていることを特徴とする、
送風機。 - 前記流路は、前記スリットに沿って延びることを特徴とする、
請求の範囲13に記載の送風機。 - 前記通気路は、前記羽根車の背面を臨むように形成されていることを特徴とする、
請求の範囲13又は14に記載の送風機。 - 前記スリットは、1.0mm以下の幅を有することを特徴とする、
請求の範囲13~15のいずれかに記載の送風機。
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CN201380045862.XA CN104641124A (zh) | 2012-09-03 | 2013-09-03 | 送风机 |
JP2014533162A JP6337231B2 (ja) | 2012-09-03 | 2013-09-03 | 送風機 |
US14/425,527 US20150219119A1 (en) | 2012-09-03 | 2013-09-03 | Blower |
EP13832856.2A EP2889490A4 (en) | 2012-09-03 | 2013-09-03 | FAN |
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JP2012193041A JP5211302B1 (ja) | 2012-09-03 | 2012-09-03 | 送風機 |
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EP (3) | EP3147516A1 (ja) |
JP (2) | JP5211302B1 (ja) |
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JP5211302B1 (ja) * | 2012-09-03 | 2013-06-12 | 株式会社メトラン | 送風機 |
JP6455653B2 (ja) | 2013-12-26 | 2019-01-23 | 株式会社メトラン | フィルター構造 |
JP6326568B2 (ja) | 2014-01-31 | 2018-05-23 | 株式会社メトラン | 呼吸補助装置 |
CN104721929B (zh) * | 2015-03-24 | 2016-08-31 | 湖南明康中锦医疗科技发展有限公司 | 一种呼吸机截流装置 |
US11247007B2 (en) | 2015-10-16 | 2022-02-15 | Metran Co., Ltd. | Silencer and artificial ventilator |
WO2017068452A1 (en) * | 2015-10-20 | 2017-04-27 | Koninklijke Philips N.V. | Pressure support system and method of controlling an audible output of same |
CN106958537B (zh) * | 2017-05-08 | 2023-06-06 | 珠海格力电器股份有限公司 | 蜗壳和空调器 |
CN107218234B (zh) * | 2017-07-06 | 2024-02-20 | 福建省福安市力德泵业有限公司 | 应用于永磁电机的低噪音高效风扇 |
WO2019235423A1 (ja) * | 2018-06-05 | 2019-12-12 | 株式会社村田製作所 | 送風装置、流体制御装置 |
WO2019235422A1 (ja) * | 2018-06-05 | 2019-12-12 | 株式会社村田製作所 | 送風装置、流体制御装置 |
CN108980086B (zh) * | 2018-09-13 | 2024-04-30 | 深圳融昕医疗科技有限公司 | 风机及具有该风机的呼吸机 |
CN113018613A (zh) * | 2019-12-24 | 2021-06-25 | 南京理工大学 | 一种产生正压气体的叶轮装置和呼吸机 |
CN111720348B (zh) * | 2020-06-18 | 2021-06-29 | 八环科技集团股份有限公司 | 一种呼吸机专用的涡轮风机及叶轮加工工艺 |
CN112240550B (zh) * | 2020-09-16 | 2021-12-03 | 宁波方太厨具有限公司 | 一种上进风燃烧器 |
EP4080060A3 (en) * | 2021-04-19 | 2023-01-25 | Bloom Energy Corporation | Centrifugal blower with integrated motor and blower volute which functions as a heat sink for the motor |
CN114876823B (zh) * | 2022-04-18 | 2024-07-12 | 江苏科技大学 | 一种离心压缩机叶轮式风扇灯及其工作方法 |
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EP2889490A1 (en) | 2015-07-01 |
JP2014132156A (ja) | 2014-07-17 |
JP6337231B2 (ja) | 2018-06-06 |
JP5211302B1 (ja) | 2013-06-12 |
EP3147516A1 (en) | 2017-03-29 |
EP3147517A1 (en) | 2017-03-29 |
JPWO2014034942A1 (ja) | 2016-08-08 |
US20150219119A1 (en) | 2015-08-06 |
EP2889490A4 (en) | 2015-08-19 |
CN104641124A (zh) | 2015-05-20 |
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