WO2018058893A1 - 离心风机 - Google Patents

离心风机 Download PDF

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Publication number
WO2018058893A1
WO2018058893A1 PCT/CN2017/074613 CN2017074613W WO2018058893A1 WO 2018058893 A1 WO2018058893 A1 WO 2018058893A1 CN 2017074613 W CN2017074613 W CN 2017074613W WO 2018058893 A1 WO2018058893 A1 WO 2018058893A1
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WO
WIPO (PCT)
Prior art keywords
air
centrifugal fan
air outlet
rotating member
housing
Prior art date
Application number
PCT/CN2017/074613
Other languages
English (en)
French (fr)
Inventor
费斌
程学丽
刘金林
尚亚洲
Original Assignee
青岛海尔股份有限公司
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 青岛海尔股份有限公司 filed Critical 青岛海尔股份有限公司
Publication of WO2018058893A1 publication Critical patent/WO2018058893A1/zh

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Classifications

    • 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
    • F04D29/4246—Fan casings comprising more than one outlet
    • 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
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps
    • F04D29/464—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps adjusting flow cross-section, otherwise than by using adjustable stator blades
    • 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
    • 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
    • F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
    • 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

Definitions

  • the invention relates to the technical field of fan air supply, in particular to a centrifugal fan.
  • the existing centrifugal fan is only provided with one air outlet.
  • the provision of external joints not only increases the cost but also greatly increases the air supply resistance, so that the air volume is reduced. The air supply efficiency is low, and it is impossible to control the air supply amount of each joint.
  • a further object of the invention is to provide a centrifugal fan with a reasonable structural layout and a compact structure.
  • Another further object of the present invention is to provide a smooth flow of the centrifugal fan with low noise.
  • the present invention provides a centrifugal fan comprising:
  • a casing having a bottom casing portion, a peripheral wall portion and a cover portion, the cover portion is provided with an air inlet opening, and the peripheral wall portion is provided with a plurality of air outlets;
  • the casing defines a communication with the air inlet An air inlet space, and a plurality of air outlet ducts; each of the air outlet ducts is curved and extends, and connects the air inlet space and one of the air outlets;
  • a wind wheel disposed in the air inlet space, configured to cause airflow from the air inlet to the housing and out of the housing via one or more of the plurality of air outlets;
  • each of the damper flaps being movably mounted at one of the air outlets or one of the air outlet ducts, configured to be controlled to move to different occlusion positions to
  • the air outlet or the air outlet duct is completely shielded, partially shielded or completely exposed, thereby adjusting the air outlet area of the air outlet or the air outlet duct;
  • a rotating member rotatably mounted to the housing and having an axis of rotation parallel or coincident with the wind The axis of rotation of the wheel;
  • a transmission mechanism configured to transmit the rotational motion of the rotating member to the plurality of the damper flaps to move the plurality of the damper flaps to respective occlusion positions.
  • each of the damper flaps is rotatably mounted to the housing; and the transmission mechanism comprises:
  • each of the pusher members being slidably mounted to the housing along a length thereof, and one end of each of the pusher members having a first mating portion;
  • each of the first mating portions cooperates with one of the second mating portions to transform a linear motion of a corresponding one of the pusher members It is a rotary motion of a corresponding damper flap.
  • each of the first mating portions is a guiding surface or a guiding groove formed at one end of a corresponding one of the push rod members, and is inserted into a rotating hole on the second mating portion;
  • the inner wall of the rotary hole of each of the second engaging portions has a protrusion that cooperates with the guiding surface.
  • one or more cam grooves are opened on one side of the rotating member
  • Each of the pusher members extends in a radial direction of the rotating member, and the other end of each of the pusher members has a projection inserted into the cam groove.
  • the cam grooves are one, and are bent and extended in the circumferential direction of the rotating member and connected end to end.
  • a plurality of the air outlet ducts are evenly distributed outside the air inlet space along a circumferential direction of the air inlet space.
  • the projection of the peripheral wall portion defining at least a portion of the wall surface of each of the air outlet ducts in a plane perpendicular to the axis of rotation of the wind wheel is curved or spiral.
  • the centrifugal fan further includes:
  • the rotating member is mounted in the housing and includes an annular turntable and a ring gear mounted on one side of the annular turntable, the gear meshing with the ring gear.
  • peripheral wall portion is integrally formed with the cover portion
  • the wind wheel is rotatably mounted to the bottom casing portion
  • the ring gear is disposed between the annular turntable and the bottom case portion.
  • each of the blades of the wind wheel includes a first step disposed along a radial direction of the wind wheel a section and a second section, the projections of the first section and the second section in a plane perpendicular to the rotation axis of the wind wheel are all circular arc shapes, and the first section And the bulging direction of the second section is opposite; and each of the blades gradually becomes thicker in a direction from the cover portion toward the bottom case portion.
  • the damper flap can be moved by the rotation of the rotating member, and the plurality of air outlets can be controllably shielded to realize the simultaneous supply of air to the plurality of directions/multiple places. Moreover, it is possible to select the direction of the air outlet/air supply and adjust the air volume of each air outlet to achieve reasonable air supply.
  • the air supply can be made smoother, the air supply volume is larger, and the noise is lower.
  • the structure of the centrifugal fan can be rationally arranged and compact. And beautiful.
  • FIG. 1 is a schematic structural view of a centrifugal fan according to an embodiment of the present invention.
  • FIG. 2 is a schematic exploded view of a centrifugal fan in accordance with one embodiment of the present invention
  • FIG. 3 is a schematic exploded view of a centrifugal fan in accordance with one embodiment of the present invention.
  • Figure 4 is a schematic partial structural view of a centrifugal fan according to an embodiment of the present invention.
  • Figure 5 is a schematic exploded view of a partial structure of a centrifugal fan in accordance with one embodiment of the present invention.
  • 6 to 13 are shielding states of respective damper flaps for respective air outlets in a centrifugal fan according to an embodiment of the present invention, wherein the rotating members are moved to different positions.
  • FIG. 1 is a schematic structural view of a centrifugal fan according to an embodiment of the present invention
  • FIGS. 2 and 3 are respectively schematic exploded views of a centrifugal fan according to an embodiment of the present invention
  • FIG. 4 is a perspective view of a centrifugal fan according to an embodiment of the present invention.
  • the centrifugal fan may include a housing 20, a wind wheel 30, and a plurality of winds Door stop piece 40, rotating member 50 and transmission mechanism 60.
  • the housing 20 may have a bottom case portion 21, a peripheral wall portion 22, and a cover portion 23.
  • the bottom case portion 21 may have a plate shape
  • the lid portion 23 may also have a plate shape.
  • the peripheral wall portion 22 can be integrally formed with the lid portion 23, that is, the peripheral wall portion 22 extends from the lid portion 23 toward the bottom shell portion 21.
  • the bottom case portion 21 is engageable in a card hole on the outer side surface of the peripheral wall portion 22 by a snap extending from the edge thereof toward the cover portion 23.
  • the peripheral wall portion 22 may also be integrally formed with the bottom casing portion 21, that is, the peripheral wall portion 22 extends from the bottom casing portion 21 toward the lid portion 23.
  • the cover portion 23 is provided with an air inlet
  • the peripheral wall portion 22 is provided with a plurality of air outlets.
  • the plurality of air outlets may be three.
  • the plurality of air outlets may also be two, four, five, and the like. Since the centrifugal fan in the embodiment of the present invention has a plurality of air outlets, it is possible to output airflow in a plurality of directions or a plurality of places.
  • the housing 20 defines an air inlet space in communication with the air inlet, and a plurality of air outlet ducts.
  • Each air outlet duct is curved and extends, and communicates with the air inlet space and an air outlet.
  • a non-linear extension here can be understood as a curved extension.
  • the air inlet space preferably has a cylindrical shape coaxial with the air inlet, and the air outlet duct can make the plane of the air outlet parallel or coincide with the radial direction of the air inlet space or the intersection angle is within 45° (preferably within 30°) .
  • a plurality of air outlet ducts are evenly distributed on the outer side of the air inlet space along the circumferential direction of the air inlet space.
  • the projection of the peripheral wall portion 22 defining at least a portion of the wall surface of each of the outlet ducts in a plane perpendicular to the inlet air space is curved or spiral to facilitate directing the flow of air.
  • the special shape of the peripheral wall portion 22 defining at least a portion of the wall surface of each of the air outlet ducts is such that at least a portion of each of the air outlet ducts is in the form of or approximately a volute type duct.
  • the wind wheel 30 may be a centrifugal type wind wheel, which may also be referred to as a centrifugal type impeller, rotatably mounted on the inner side surface of the bottom casing portion 21 and located in the air inlet space, and configured to cause airflow from the air inlet to the casing 20 and The housing 20 flows out through one or more of the plurality of air outlets.
  • the axis of rotation of the rotor 30 is preferably disposed coaxially with the air inlet.
  • Each damper flap 40 is movably mounted at an air outlet or an air outlet duct, and is configured to be controlled to move to different occlusion positions to completely shield the air outlet or the air outlet duct, Partially obscured or fully exposed to adjust the air outlet area of the air outlet or the air outlet duct.
  • each air outlet preferably includes a plurality of small air outlets, and for each air outlet and the corresponding windshield flap, the shutter blank 40 includes a plurality of small movements for synchronous movement; The initial positions of the plurality of small flaps may be set at the same position or at different shaded positions to achieve diverse air supply.
  • the rotating member 50 is rotatably mounted to the housing 20, and its rotational axis is parallel or coincident with the rotational axis of the wind wheel 30.
  • the axis of rotation of the rotating member 50 coincides with the axis of rotation of the wind wheel 30.
  • the transmission mechanism 60 can be configured to transmit the rotational motion of the rotating member 50 to the plurality of damper flaps 40 to move the plurality of damper flaps 40 to respective occlusion positions, thereby allowing the centrifugal fan of the embodiment of the present invention to pass through
  • the damper flaps 40 adjust the respective outlet areas of the plurality of air outlets.
  • the rotating member 50, the transmission mechanism 60 and the plurality of damper flaps 40 can controllably distribute the airflow flowing in from the air inlet to the plurality of air outlets, and can control the opening and closing of the air outlet ducts that communicate with each air outlet. Or adjust the amount of airflow in each outlet duct.
  • each damper flap 40 is rotatably mounted to the housing 20.
  • the transmission mechanism 60 includes a plurality of pusher members 61 and a plurality of second mating portions 62.
  • Each of the pusher members 61 is slidably mounted to the housing 20 along its length, and one end of each of the pusher members 61 has a first engaging portion.
  • the plurality of second engagement portions 62 are respectively disposed on the plurality of damper flaps 40.
  • each of the first engaging portions cooperates with a second engaging portion 62 to convert the linear motion of a corresponding pusher member 61 into a rotational motion of the corresponding damper flap 40.
  • each of the first engaging portions is a guide surface or a guide groove formed at one end of a corresponding pusher member 61, and is inserted into a through hole on the second engaging portion 62.
  • the inner wall of the rotating hole of each of the second engaging portions 62 has a protrusion portion that cooperates with the guiding surface, so that the first engaging portion and the second engaging portion 62 constitute a cam mechanism or a similar cam mechanism, and the structure is simple, and the control is convenient and precise.
  • the first mating portion and the second mating portion 62 may constitute a slide nut mechanism.
  • each pusher member 61 in order for each pusher member 61 to facilitate receiving rotational movement of the rotating member 50, each pusher member 61 preferably extends in a radial direction of the rotating member 50, that is, each The pusher members 61 are slidably mounted to the housing 20 in the radial direction of the rotating member 50 to rotate each of the damper flaps 40 in the radial direction of the rotating member 50.
  • One or more cam grooves are opened on one side of the rotating member 50, and the other end of each of the pusher members 61 has a projection that is inserted into the cam groove. That is to say, the transmission of the movement between the rotating member 50 and the plurality of push rod members 61 is realized by the principle of the cam mechanism, the structure is simple and compact, and the motion transmission is stable and reliable.
  • the cam groove may be one, such as the first cam groove 51.
  • the first cam grooves 51 are bent and extended in the circumferential direction of the rotating member 50 and are preferably connected end to end, and may of course not be connected end to end.
  • the bending extension can be such that when one pusher member 61 is at a position relative to the center of the rotating member 50 (far from the center of the rotating member 50), the other pusher member 61 is in another position, the third pusher The piece is in one of the above positions, or the other position or the third position; and so on.
  • a plurality of second cam grooves may also be used to control the movement of each pusher member 61, i.e., there may be multiple cam slots. That is, a plurality of second cam grooves are formed on one side of the rotating member 50, and each of the pusher members 61 has a projection inserted into a second cam groove at one end.
  • a plurality of third cam grooves are formed on one side of the rotating member 50, that is, a plurality of cam grooves may be provided.
  • At least one pusher member 61 is convexly inserted into a third cam groove; for example, two projections may be inserted into a portion of the third cam groove, and three projections or the like may be inserted into a portion of the third cam groove.
  • the centrifugal fan may also include an adjustment motor 71 and a gear 72.
  • the adjustment motor 71 is mounted in the housing 20.
  • the gear 72 is mounted to the output shaft of the adjustment motor 71.
  • the rotating member 50 is mounted in the housing 20 and includes an annular turntable and a ring gear mounted on one side of the annular turntable, the gear 72 meshing with the ring gear.
  • the ring gear is disposed between the annular turntable and the bottom case portion 21, and the first cam groove 51 or the plurality of second cam grooves or the plurality of third cam grooves may be disposed on the side of the ring turntable having the ring gear.
  • the inner surface of the bottom case portion 21 may have a recessed groove, and the ring gear may be located in the recessed groove.
  • the wind wheel 30 and the wind wheel 30 motor that drives the wind wheel 30 to rotate can be located in the center of the ring carousel.
  • the housing 20 also has a motor housing portion 24 extending downward from the cover portion 23 to accommodate the adjustment motor 71.
  • the adjustment motor 71 that drives the movement of the rotating member 50 can be a stepper motor, particularly a DC stepper motor.
  • the predetermined reduction ratio between the adjustment motor 71 and the rotating member 50 may range from 5 to 10, for example, the reduction ratio is 8, and the rotating member 50 may continue to rotate when the adjustment motor 71 is rotated to a predetermined position to stop.
  • the angle is less than or equal to a preset value (eg 0.2°).
  • the gear 72 on the output shaft of the adjusting motor 71 and the output shaft of the adjusting motor 71 may continue to rotate due to the inertia, and the rotating member 50 is continued to rotate, assuming that the output shaft of the adjusting motor 71 is on the output shaft 71.
  • the angle at which the gear 72 and the output shaft of the adjusting motor 71 continue to rotate can be less than or equal to 1°, and the movement is transmitted to the rotating member 50 under the action of a predetermined reduction ratio (for example, a predetermined reduction ratio of 8), and the rotating member 50 continues to rotate.
  • the angle may be 0.125°, which greatly improves the rotation accuracy of the rotating member 50.
  • the wind wheel 30 can include a plurality of blades, a casing, an annular bottom plate extending outwardly from the opening of the casing, and a reinforcement ring.
  • the angle between the circumferential side of the casing and the axis of the casing is 30 to 40.
  • the peripheral side of the casing and the top surface of the casing, and The annular bottom plate has a circular arc-shaped transition surface, and the length of the circumferential side surface is 3 to 5 times the radius of the circular arc-shaped transition surface.
  • the stator of the wind turbine motor that drives the wind wheel 30 to rotate is mounted on the bottom casing portion, and the rotor of the wind turbine motor is mounted in the casing.
  • Each of the blades extends from the surface of the annular bottom plate toward the cover portion 23.
  • the reinforcing ring is disposed outside the corners of the plurality of blades adjacent to the cover portion 23 and the peripheral wall portion 22, and is integrally formed with the plurality of blades by a plurality of connecting plates.
  • the thickness of the connecting plate is smaller than the thickness of the blade.
  • each blade comprises a first section and a second section arranged in sequence in the radial direction of the wind wheel 30, the first section and the second section being in a plane perpendicular to the axis of rotation of the rotor 30
  • the projections are all circular arcs, and the arching directions of the first section and the second section are opposite.
  • the radius ratio of the first section and the second section is 0.18 to 0.3.
  • the central angle of the first section ranges from 15° to 22°.
  • the central angle of the second section ranges from 38° to 46°.
  • each of the blades may be designed to gradually become thicker in a direction directed from the cover portion 23 toward the bottom case portion 21.
  • the number of air outlet groups may be three, including a first air outlet 221, a second air outlet 222, and a third air outlet 223.
  • the first air outlet 221, the second air outlet 222, and the third air outlet 223 may be in the circumferential direction of the wind wheel 30 and may be in a clockwise direction (clockwise from the cover portion 23 toward the bottom case portion 21, from the bottom
  • the shell portions 21 are arranged in the counterclockwise direction as viewed from the lid portion 23, and are disposed at intervals.
  • the three pusher members 61 include a first pusher member, a second pusher member and a third pusher member, and the three flappers 40 include a first flapper member 41, a second flapper member 42, and a third flapper member. Sheet 43.
  • the first cam groove 51 may be designed to first select three points on a first circumference and divide the first circumference into three equal parts, the three points including the first Point (the point in FIG. 5 that is in contact with the protrusion on the first pusher member), the second point and the third point are arranged in a counterclockwise direction (the angle of view shown in FIG. 5); two of the three points The points (such as the first point and the second point, respectively) start to make the arc slots of the same radius as the first circumference in the counterclockwise direction (such as the first holding arc slot segment and the second holding arc slot segment respectively) The length of the second holding arc slot segment is greater than the first retaining arc slot segment.
  • a third holding arc slot segment having the same radius as the second circumference is formed between the end of the first holding arc slot segment and the second point, and the third holding arc slot segment is smoothly connected with The second holds the arc slot segment, as well as the second point.
  • the beginning is made, first bent inwardly to a second circumference, and then bent to a third point.
  • a fourth holding arc slot segment having the same radius as the second circumference is formed between the third point and the first point, and the fourth holding arc slot segment and the third point are smoothly connected, and the first point.
  • the length of the fourth holding arc slot segment is greater than the third retaining arc slot segment.
  • FIG. 6 to 13 are shielding states of the respective damper flaps 40 for the respective air outlets in the centrifugal fan according to an embodiment of the present invention, wherein the rotating member 50 is moved to different positions.
  • the centrifugal fan when the rotating member 50 is moved to the position shown in FIG. 6, the three push rod members 61 are convexly farthest from the center of the rotating member 50, and the three-damper shutter 40 can make the first out.
  • the tuyere 221, the second air outlet 222, and the third air outlet 223 are both in a closed state.
  • the protrusion on the first pusher member is closest to the center of the rotating member 50, and the second push member and the third pusher member are raised from the center of the rotating member 50.
  • the first damper flap 41 can open the first air outlet 221
  • the second damper flap 42 and the third damper flap 43 can respectively close the second air outlet 222 and the third air outlet 223.
  • the farthest, the second damper cover 42 can open the second air outlet 222, and the first damper flap 41 and the third damper flap 43 can respectively close the first air outlet 221 and the third air outlet 223.
  • the rotating member 50 is moved to the position shown in FIG. 9, the protrusion on the third pusher member is closest to the center of the rotating member 50, and the first pusher member and the second pusher member are raised from the center of the rotating member 50.
  • the third damper flap 43 can open the third air outlet 223, and the first damper flap 41 and the second damper flap 42 can respectively close the first air outlet 221 and the second air outlet 222.
  • the protrusion on the third pusher member is farthest from the center of the rotating member 50, and the first push member and the second push member are raised from the rotating member 50.
  • the third damper flap 43 can close the third air outlet 223, and the first damper flap 41 and the second damper flap 42 can open the first air outlet 221 and the second air outlet 222, respectively.
  • the first damper flap 41 can close the first air outlet 221, and the second damper flap 42 and the third damper flap 43 can open the second air outlet 222 and the third air outlet 223, respectively.
  • the rotating member 50 is moved to the position shown in FIG. 12, the protrusion on the second pusher member is farthest from the center of the rotating member 50, and the first push member and the third push member are raised from the rotating member 50.
  • the second damper cover 42 can close the second air outlet 222, and the first damper flap 41 and the third damper flap 43 can open the first air outlet 221 and the third air outlet 223, respectively.
  • the rotating member 50 is moved to the position shown in FIG. 13
  • the protrusions of the three push rod members 61 are closest to the center of the rotating member 50, and the third damper member 40 can make the first air outlet 221 and the second. Both the air outlet 222 and the third air outlet 223 are in an open state.

Abstract

一种离心风机，包括：壳体（20），其内限定有与进风口连通的进风空间，以及多个弯曲延伸的出风风道；风轮（30），配置成促使气流从进风口流入壳体（20）并经由多个出风口中的一个或多个流出壳体（20）；多个风门挡片（40），分别调整多个出风口或出风风道的出风面积；转动件（50）；传动机构（60），配置成将转动件（50）的旋转运动传递至多个风门挡片（40），以使多个风门挡片（40）运动到各自相应的遮挡位置处。该离心风机可通过转动件（50）的转动带动风门挡片（40）运动，对多个出风口进行可控地遮蔽，以实现能够同时向多个方向送风，且能够对出风方向进行选择以及对每个出风口的出风量进行调节，实现合理送风。

Description

离心风机 技术领域
本发明涉及风机送风技术领域，特别是涉及一种离心风机。
背景技术
现有离心风机只设置有一个出风口，当需要向两个或两个以上不同方向或多个位置送风时，需要设置多个风机或者增设与风机配套的外接头才能够满足向不同方向或多个位置送风的需求。这样就造成了成本的增加，并且有些特殊场合，由于空间的限制无法设置多个风机，则会影响生产或使用，另外，设置外接头不但增加成本也大大的增加送风阻力，使风量减小，送风效率低，而且也无法控制每个接头的送风量。
发明内容
本发明的一个目的旨在克服现有的离心风机的至少一个缺陷，提供一种新颖的离心风机，其不仅能够向多个地方或多个方向送风，特别地也能够调整每个出风口的送风量。
本发明的一个进一步的目的是要离心风机的结构布局合理，结构紧凑。
本发明的另一个进一步的目的是要使离心风机送风顺畅，噪音低。
为了实现上述至少一个目的，本发明提供了一种离心风机，其包括：
壳体，其具有底壳部、周壁部和盖部，所述盖部上开设有进风口，所述周壁部上开设有多个出风口；所述壳体内限定有与所述进风口连通的进风空间，以及多个出风风道；每个所述出风风道弯曲延伸，且连通所述进风空间与一个所述出风口；
风轮，设置于所述进风空间内，配置成促使气流从所述进风口流入所述壳体并经由多个所述出风口中的一个或多个流出所述壳体；
多个风门挡片，每个所述风门挡片可运动地安装于一个所述出风口处或一个所述出风风道内，配置成受控地运动到不同的遮挡位置处，以对该出风口或该出风风道进行完全遮蔽、部分遮蔽或完全暴露，从而调整该出风口或该出风风道的出风面积；
转动件，可转动地安装于所述壳体，且其旋转轴线平行或重合于所述风 轮的旋转轴线；
传动机构，配置成将所述转动件的旋转运动传递至多个所述风门挡片，以使多个所述风门挡片运动到各自相应的遮挡位置处。
可选地，每个所述风门挡片可转动地安装于所述壳体；且所述传动机构包括：
多个推杆件，每个所述推杆件沿其长度方向可滑动地安装于所述壳体，且每个所述推杆件的一端具有第一配合部；和
多个第二配合部，分别设置于多个所述风门挡片，且每个所述第一配合部与一个所述第二配合部相配合地将一个相应所述推杆件的直线运动转变为一个相应所述风门挡片的旋转运动。
可选地，每个所述第一配合部为形成在一个相应所述推杆件的一端的引导面或引导槽，且插入一个所述第二配合部上的转孔；
每个所述第二配合部的转孔内壁上具有与所述引导面配合的突起部。
可选地，所述转动件的一个侧面上开设有一个或多个凸轮槽；
每个所述推杆件均沿所述转动件的径向方向延伸，且每个所述推杆件的另一端具有插入所述凸轮槽的凸起。
可选地，所述凸轮槽为一个，沿所述转动件的周向方向弯折延伸且首尾相连。
可选地，多个所述出风风道沿所述进风空间的周向方向均布于所述进风空间的外侧。
可选地，所述周壁部的限定每个出风风道的壁面的至少部分在垂直于所述风轮的旋转轴线的平面内的投影呈曲线状或螺旋线状。
可选地，所述离心风机还包括：
调节电机，安装于所述壳体内；
齿轮，安装于所述调节电机的输出轴；且
所述转动件安装于所述壳体内，且包括环形转盘和安装于所述环形转盘一侧的齿圈，所述齿轮与所述齿圈啮合。
可选地，所述周壁部与所述盖部一体成型；
所述风轮可转动地安装于所述底壳部；
所述齿圈设置于所述环形转盘和所述底壳部之间。
可选地，所述风轮的每个扇叶包括沿所述风轮的径向方向依次设置的第 一区段和第二区段，所述第一区段和所述第二区段在垂直于所述风轮的旋转轴线的平面内的投影均为圆弧形，且所述第一区段和所述第二区段的拱起方向相反；且，每个所述扇叶沿由所述盖部指向所述底壳部的方向逐渐变厚。
本发明的离心风机因为具有多个出风口，可通过转动件的转动带动风门挡片运动，对多个出风口进行可控地遮蔽，以实现能够同时向多个方向/多个地方送风，且能够对出风方向/送风地方进行选择以及对每个出风口的出风量进行调节，实现合理送风。
进一步地，由于本发明的离心风机中风轮(包括扇叶、罩壳)和出风风道的特殊结构和位置可使送风更加顺畅，送风量更大，噪音更低。
进一步地，由于本发明的离心风机中风轮、带动转动件运转的调节电机、转动件、传动机构、壳体及出风口等的位置和特殊设计，可使离心风机的结构布局合理、结构紧凑，且美观。
根据下文结合附图对本发明具体实施例的详细描述，本领域技术人员将会更加明了本发明的上述以及其他目的、优点和特征。
附图说明
后文将参照附图以示例性而非限制性的方式详细描述本发明的一些具体实施例。附图中相同的附图标记标示了相同或类似的部件或部分。本领域技术人员应该理解，这些附图未必是按比例绘制的。附图中：
图1是根据本发明一个实施例的离心风机的示意性结构图；
图2是根据本发明一个实施例的离心风机的示意性分解图；
图3是根据本发明一个实施例的离心风机的示意性分解图；
图4是根据本发明一个实施例的离心风机的示意性局部结构图；
图5是根据本发明一个实施例的离心风机中局部结构的示意性分解图；
图6至图13分别是根据本发明一个实施例的离心风机中，转动件运动到不同位置处，各个风门挡片对各自相应出风口的遮蔽状况。
具体实施方式
图1是根据本发明一个实施例的离心风机的示意性结构图；图2和图3分别是根据本发明一个实施例的离心风机的示意性分解图；图4是根据本发明一个实施例的离心风机的示意性局部结构图。如图1至图4所示，本发明实施例提供了一种离心风机。该离心风机可包括壳体20、风轮30、多个风 门挡片40、转动件50和传动机构60。
壳体20可具有底壳部21、周壁部22和盖部23。具体地，底壳部21可呈板状，盖部23也可呈板状。周壁部22可与盖部23一体成型，也就是说，周壁部22是从盖部23向底壳部21延伸出。底壳部21可通过其边缘处向盖部23延伸出的卡扣卡接于周壁部22外侧面上的卡孔内。在一些替代性实施例中，周壁部22也可与底壳部21一体成型，也就是说，周壁部22是从底壳部21向盖部23延伸出。进一步地，盖部23上开设有进风口，周壁部22上开设有多个出风口。例如，在图1所示的实施例中，多个出风口可为三个，在一些其他的实施例中，多个出风口也可为2个、4个、5个等。本发明实施例中的离心风机由于具有多个出风口，因此能够向多个方向或多个地方输出气流。
特别地，壳体20内限定有与进风口连通的进风空间，以及多个出风风道。每个出风风道弯曲延伸，且连通进风空间与一个出风口。在这里非直线延伸均可理解为弯曲延伸。进风空间优选为呈与进风口同轴的圆柱状，出风风道可使出风口所在平面与进风空间的径向方向平行或重合或交叉角度在45°以内(优选为30°以内)。多个出风风道沿进风空间的周向方向均布于进风空间的外侧。周壁部22的限定每个出风风道的壁面的至少部分在垂直于进风空间的平面内的投影呈曲线状或螺旋线状，以便于引导气流流动。具体地，例如，周壁部22的限定每个出风风道的壁面的至少部分的特殊形状以使每个出风风道的至少部分呈或近似呈蜗壳型风道状。
风轮30可为离心式风轮，也可被称为离心式叶轮，可转动地安装于底壳部21的内侧面且位于进风空间内，配置成促使气流从进风口流入壳体20并经由多个出风口中的一个或多个流出壳体20。风轮30的旋转轴线优选地与进风口同轴设置。
每个风门挡片40可运动地安装于一个出风口处或一个出风风道内，配置成受控地运动到不同的遮挡位置处，以对该出风口或该出风风道进行完全遮蔽、部分遮蔽或完全暴露，从而调整该出风口或该出风风道的出风面积。进一步地，当安装于出风口处时，每个出风口优选包括多个小出风口，对于每个出风口和相应的风门挡片，风门挡片40包括多个同步运动的小挡片；但多个小挡片的初始位置可以设置在相同的位置处，也可设置在不同的遮蔽的位置处，以实现多样化的送风。
转动件50可转动地安装于壳体20，且其旋转轴线平行或重合于风轮30的旋转轴线。优选地，转动件50的旋转轴线与风轮30的旋转轴线重合。传动机构60可配置成将转动件50的旋转运动传递至多个风门挡片40，以使多个风门挡片40运动到各自相应的遮挡位置处，从而使本发明实施例的离心风机可通过多个风门挡片40调整多个出风口各自的出风面积。转动件50、传动机构60和多个风门挡片40能够将从进风口流入的气流可控地分配至多个出风口，可以实现控制与每个出风口连通的出风风道的开闭和/或对每个出风风道内的出风风量进行调节。
在本发明的一些实施例中，每个风门挡片40可转动地安装于壳体20。如图5所示，传动机构60包括多个推杆件61和多个第二配合部62。每个推杆件61沿其长度方向可滑动地安装于壳体20，且每个推杆件61的一端具有第一配合部。多个第二配合部62分别设置于多个风门挡片40。且每个第一配合部与一个第二配合部62相配合地将一个相应推杆件61的直线运动转变为一个相应风门挡片40的旋转运动。
例如，如图5所示，每个第一配合部为形成在一个相应推杆件61的一端的引导面或引导槽，且插入一个第二配合部62上的转孔。每个第二配合部62的转孔内壁上具有与引导面配合的突起部，以使第一配合部和第二配合部62构成凸轮机构或类似凸轮机构，结构简单，控制方便精确。在一些替代性实施例中，第一配合部和第二配合部62可构成滑杆螺母机构。
在本发明的一些实施例中，为了使每个推杆件61便于接收来转动件50的旋转运动，每个推杆件61优选为沿转动件50的径向方向延伸，也就是说每个推杆件61沿转动件50的径向方向可滑动地安装于壳体20，以使每个风门挡片40绕转动件50的径向方向转动。转动件50的一个侧面上开设有一个或多个凸轮槽，每个推杆件61的另一端具有插入凸轮槽的凸起。也就是说，转动件50与多个推杆件61之间运动的传递是利用凸轮机构原理实现的，结构简单紧凑，运动传递稳固可靠。
具体地，在一些实施方式中，凸轮槽可为一个，如第一凸轮槽51。第一凸轮槽51沿转动件50的周向方向弯折延伸且优选为首尾相连，当然也可不首尾相连。弯折延伸可使当一个推杆件61相对于转动件50的中心处于一个位置处(与转动件50的中心的距离远近)时，另一推杆件61处于另一位置，第三推杆件处于上述一个位置、或上述另一位置、或第三位置处；等等。这 样设置可在转动件50运动时使多个推杆件61处于同一位置或至少处于两个位置，这样可使风门挡片40处于同一位置或至少处于两个位置，以对相应的出风口进行暴露或遮蔽。在本发明的一些实施方式中，也可使用多个第二凸轮槽来控制每个推杆件61的运动，即凸轮槽可为多个。也就是说，转动件50的一个侧面上开设有多个第二凸轮槽，每个推杆件61一端具有插入一个第二凸轮槽的凸起。在本发明的另一些替代性实施例中，转动件50的一个侧面上开设有多个第三凸轮槽，即凸轮槽可为多个。至少一个推杆件61上凸起插入一个第三凸轮槽；例如，部分第三凸轮槽内可被插入两个凸起，部分第三凸轮槽内可被插入三个凸起等。
在本发明的一些实施例中，离心风机还可包括调节电机71和齿轮72。调节电机71安装于壳体20内。齿轮72安装于调节电机71的输出轴。转动件50安装于壳体20内，其包括环形转盘和安装于环形转盘一侧的齿圈，齿轮72与齿圈啮合。齿圈设置于环形转盘和底壳部21之间，第一凸轮槽51或多个第二凸轮槽或多个第三凸轮槽可设置于环形转盘的具有齿圈的这一侧。进一步地，底壳部21的内表面可具有凹陷槽，齿圈可位于凹陷槽内。风轮30和带动风轮30转动的风轮30电机可位于环形转盘的中央。在该实施例中，壳体20内还具有从盖部23向下延伸出的电机容纳部24，以容纳调节电机71。
在本发明的一些实施例中，带动转动件50运动的调节电机71可为步进电机，尤其是直流步进电机。调节电机71与转动件50之间的预定减速比的取值范围可为5至10，例如，减速比为8，可在调节电机71转动到预定位置处停止时，使转动件50继续转动的角度小于或等于一预设值(如0.2°)。当调节电机71转动到预定位置处停机时，调节电机71输出轴上的齿轮72以及调节电机71输出轴可能由于惯性的作用继续转动，带动转动件50继续转动，假设调节电机71输出轴上的齿轮72以及调节电机71输出轴继续转动的角度可小于等于1°，则该运动在具有预定减速比(如预定减速比为8)的作用下，传递到转动件50后，转动件50继续转动的角度可能就为0.125°，大大提高了转动件50的转动精度。
在本发明的一些实施例中，风轮30可包括多个扇叶、罩壳、从罩壳的开口处向外延伸出的环形底板，以及加强环。罩壳的周侧面与罩壳的轴线之间的夹角为30°至40°。例如，罩壳的周侧面与罩壳的顶端表面，以及与 环形底板之间均为圆弧形过渡面，周侧面的长度为圆弧形过渡面的半径的3至5倍。为了合理利用空间，带动风轮30转动的风轮电机的定子安装于底壳部，风轮电机的转子安装于罩壳内。每个扇叶从环形底板的朝向盖部23的表面延伸出。加强环设置于多个扇叶的临近盖部23和周壁部22的角部的外侧，且通过多个连接板与多个扇叶一体成型。连接板的厚度小于扇叶的厚度。
特别地，每个扇叶包括沿风轮30的径向方向依次设置的第一区段和第二区段，第一区段和第二区段在垂直于风轮30的旋转轴线的平面内的投影均为圆弧形，且第一区段和第二区段的拱起方向相反。进一步地，第一区段和第二区段的半径比为0.18至0.3。第一区段的圆心角的取值范围为15°至22°。第二区段的圆心角的取值范围为38°至46°。进一步地，每个扇叶可被设计成沿由盖部23指向底壳部21的方向逐渐变厚。
在本发明的一些优选的实施例中，出风口组的数量可为三个，包括第一出风口221、第二出风口222和第三出风口223。第一出风口221、第二出风口222和第三出风口223可沿风轮30的周向方向且可沿顺时针方向(从盖部23向底壳部21看呈顺时针方向，从底壳部21向盖部23看呈逆时针方向)依次间隔设置。三个推杆件61包括第一推杆件、第二推杆件和第三推杆件，三个风门挡片40包括第一风门挡片41、第二风门挡片42和第三风门挡片43。
特别地，如图3和6所示，第一凸轮槽51在设计时，可首先选取三个点处于一第一圆周上，且将该第一圆周三等分，这三个点包括第一点(图5中与第一推杆件上凸起接触的点)、第二点和第三点沿逆时针方向(图5中所示看图角度)排列；以这三个点中的两个点(如分别为第一点和第二点)开始沿逆时针方向做与该第一圆周同半径的保持弧槽段(如分别为第一保持弧槽段和第二保持弧槽段)，第二保持弧槽段的长度大于第一保持弧槽段。
进一步地，在第一保持弧槽段的末端与第二点之间做一与第二圆周(位于第一圆周内侧)同半径的第三保持弧槽段，平滑连接第三保持弧槽段与第二保持弧槽段，以及与第二点。在第二保持弧槽段的末端，开始做出，先向内弯折至一第二圆周，后弯折至第三点。在第三点和第一点之间做一与第二圆周同半径的第四保持弧槽段，平滑连接第四保持弧槽段与第三点，以及与第一点。第四保持弧槽段的长度大于第三保持弧槽段。
图6至图13分别是根据本发明一个实施例的离心风机中，转动件50运动到不同位置处，各个风门挡片40对各自相应出风口的遮蔽状况。离心风机工作时，当转动件50运动到如图6所示的位置处时，三个推杆件61上凸起距离转动件50中心最远，此时三风门挡片40可使第一出风口221、第二出风口222和第三出风口223均处于关闭状态。当转动件50运动到如图7所示的位置处时，第一推杆件上凸起距离转动件50中心最近，第二推杆件和第三推杆件上凸起距离转动件50中心最远，第一风门挡片41可打开第一出风口221，第二风门挡片42和第三风门挡片43分别可使第二出风口222和第三出风口223处于关闭状态。当转动件50运动到如图8所示的位置处时，第二推杆件上凸起距离转动件50中心最近，第一推杆件和第三推杆件上凸起距离转动件50中心最远，第二风门挡片42可打开第二出风口222，第一风门挡片41和第三风门挡片43分别可使第一出风口221和第三出风口223处于关闭状态。当转动件50运动到如图9所示的位置处时，第三推杆件上凸起距离转动件50中心最近，第一推杆件和第二推杆件上凸起距离转动件50中心最远，第三风门挡片43可打开第三出风口223，第一风门挡片41和第二风门挡片42分别可使第一出风口221和第二出风口222均处于关闭状态。
当转动件50运动到如图10所示的位置处时，第三推杆件上凸起距离转动件50中心最远，第一推杆件和第二推杆件上凸起距离转动件50中心最近，第三风门挡片43可关闭第三出风口223，第一风门挡片41和第二风门挡片42分别可打开第一出风口221和第二出风口222。当转动件50运动到如图11所示的位置处时，第一推杆件上凸起距离转动件50中心最远，第二推杆件和第三推杆件上凸起距离转动件50中心最近，第一风门挡片41可关闭第一出风口221，第二风门挡片42和第三风门挡片43分别可打开第二出风口222和第三出风口223。当转动件50运动到如图12所示的位置处时，第二推杆件上凸起距离转动件50中心最远，第一推杆件和第三推杆件上凸起距离转动件50中心最近，第二风门挡片42可关闭第二出风口222，第一风门挡片41和第三风门挡片43分别可打开第一出风口221和第三出风口223。当转动件50运动到如图13所示的位置处时，三个推杆件61上凸起距离转动件50中心均最近，此时三风门挡片40可使第一出风口221、第二出风口222和第三出风口223均处于打开状态。
至此，本领域技术人员应认识到，虽然本文已详尽示出和描述了本发明的多个示例性实施例，但是，在不脱离本发明精神和范围的情况下，仍可根据本发明公开的内容直接确定或推导出符合本发明原理的许多其他变型或修改。因此，本发明的范围应被理解和认定为覆盖了所有这些其他变型或修改。

Claims (10)

  1. 一种离心风机，其特征在于，包括：
    壳体，其具有底壳部、周壁部和盖部，所述盖部上开设有进风口，所述周壁部上开设有多个出风口；所述壳体内限定有与所述进风口连通的进风空间，以及多个出风风道；每个所述出风风道弯曲延伸，且连通所述进风空间与一个所述出风口；
    风轮，设置于所述进风空间内，配置成促使气流从所述进风口流入所述壳体并经由多个所述出风口中的一个或多个流出所述壳体；
    多个风门挡片，每个所述风门挡片可运动地安装于一个所述出风口处或一个所述出风风道内，配置成受控地运动到不同的遮挡位置处，以对该出风口或该出风风道进行完全遮蔽、部分遮蔽或完全暴露，从而调整该出风口或该出风风道的出风面积；
    转动件，可转动地安装于所述壳体，且其旋转轴线平行或重合于所述风轮的旋转轴线；
    传动机构，配置成将所述转动件的旋转运动传递至多个所述风门挡片，以使多个所述风门挡片运动到各自相应的遮挡位置处。
  2. 根据权利要求1所述的离心风机，其特征在于，
    每个所述风门挡片可转动地安装于所述壳体；且所述传动机构包括：
    多个推杆件，每个所述推杆件沿其长度方向可滑动地安装于所述壳体，且每个所述推杆件的一端具有第一配合部；和
    多个第二配合部，分别设置于多个所述风门挡片，且每个所述第一配合部与一个所述第二配合部相配合地将一个相应所述推杆件的直线运动转变为一个相应所述风门挡片的旋转运动。
  3. 根据权利要求2所述的离心风机，其特征在于，
    每个所述第一配合部为形成在一个相应所述推杆件的一端的引导面或引导槽，且插入一个所述第二配合部上的转孔；
    每个所述第二配合部的转孔内壁上具有与所述引导面配合的突起部。
  4. 根据权利要求2所述的离心风机，其特征在于，
    所述转动件的一个侧面上开设有一个或多个凸轮槽；
    每个所述推杆件均沿所述转动件的径向方向延伸，且每个所述推杆件的另一端具有插入所述凸轮槽的凸起。
  5. 根据权利要求4所述的离心风机，其特征在于，
    所述凸轮槽为一个，沿所述转动件的周向方向弯折延伸且首尾相连。
  6. 根据权利要求1所述的离心风机，其特征在于，
    多个所述出风风道沿所述进风空间的周向方向均布于所述进风空间的外侧。
  7. 根据权利要求1所述的离心风机，其特征在于，
    所述周壁部的限定每个出风风道的壁面的至少部分在垂直于所述风轮的旋转轴线的平面内的投影呈曲线状或螺旋线状。
  8. 根据权利要求1所述的离心风机，其特征在于，还包括：
    调节电机，安装于所述壳体内；
    齿轮，安装于所述调节电机的输出轴；且
    所述转动件安装于所述壳体内，且包括环形转盘和安装于所述环形转盘一侧的齿圈，所述齿轮与所述齿圈啮合。
  9. 根据权利要求8所述的离心风机，其特征在于，
    所述周壁部与所述盖部一体成型；
    所述风轮可转动地安装于所述底壳部；
    所述齿圈设置于所述环形转盘和所述底壳部之间。
  10. 根据权利要求1所述的离心风机，其特征在于，
    所述风轮的每个扇叶包括沿所述风轮的径向方向依次设置的第一区段和第二区段，所述第一区段和所述第二区段在垂直于所述风轮的旋转轴线的平面内的投影均为圆弧形，且所述第一区段和所述第二区段的拱起方向相反；且
    每个所述扇叶沿由所述盖部指向所述底壳部的方向逐渐变厚。
PCT/CN2017/074613 2016-09-29 2017-02-23 离心风机 WO2018058893A1 (zh)

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