WO2018058892A1 - 离心风机 - Google Patents

离心风机 Download PDF

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Publication number
WO2018058892A1
WO2018058892A1 PCT/CN2017/074612 CN2017074612W WO2018058892A1 WO 2018058892 A1 WO2018058892 A1 WO 2018058892A1 CN 2017074612 W CN2017074612 W CN 2017074612W WO 2018058892 A1 WO2018058892 A1 WO 2018058892A1
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WO
WIPO (PCT)
Prior art keywords
air
rotating member
centrifugal fan
air outlets
housing
Prior art date
Application number
PCT/CN2017/074612
Other languages
English (en)
French (fr)
Inventor
费斌
程学丽
纪璇
李登强
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 WO2018058892A1 publication Critical patent/WO2018058892A1/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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting 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
    • F04D29/40—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

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.
  • 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 sets of air outlets, each group of the air outlets having at least one air outlet;
  • a wind wheel 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 set of the damper flaps having at least one damper flap, each of the damper flaps being movably mounted to one of the air outlets, configured to be controlled to move to different occlusion positions Adjusting the air outlet area of the air outlet by completely obscuring, partially obscuring or completely exposing the air outlet;
  • a rotating member rotatably mounted to the housing and having an axis of rotation parallel or coincident with an axis of rotation of the rotor;
  • a transmission mechanism configured to transmit a rotational motion of the rotating member to the plurality of the damper flaps, A plurality of the damper flaps are moved to respective occlusion positions.
  • each of the damper flaps is rotatably mounted at a corresponding one of the air outlets
  • the transmission mechanism includes a plurality of link members, each of the link members directly or indirectly connecting each of the rotating member and a set of the damper flaps.
  • each of the link members is slidably mounted to the housing in a radial direction of the rotating member
  • a first cam groove is defined on one side of the rotating member, and each of the connecting rod members has a protrusion inserted into the first cam groove at one end; or a plurality of sides of the rotating member are opened a second cam groove, each of the link members having a projection inserted into one of the second cam grooves at one end.
  • the transmission mechanism further includes a plurality of first gears, each of the first gears being fixedly coupled to each of the plurality of damper flaps;
  • Each of the link members has teeth that mesh with a corresponding one of the first gears.
  • the first cam grooves are bent and extended in the circumferential direction of the rotating member and are connected end to end.
  • each of the air outlets has two air outlets, and a partition wall is disposed between the two air outlets, and a guide groove is defined in the partition wall;
  • Each of the link members is mounted in the guide groove of a corresponding one of the partition walls.
  • 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, and the second gear meshes 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 section and a second section sequentially disposed along a radial direction of the wind wheel, the first section and the second section being The projections in a plane perpendicular to the axis of rotation of the rotor are all circular arcs, and the arching directions of the first section and the second section are opposite.
  • each of the blades of the wind wheel gradually thickens in a direction from the cover portion to 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 amount is larger, and the noise is lower.
  • the centrifugal fan of the centrifugal fan has a reasonable structural layout, compact structure and beautiful appearance.
  • 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
  • Figure 3 is a schematic exploded view of a partial structure of a centrifugal fan in accordance with one embodiment of the present invention
  • FIG. 4 is a schematic structural view of a middle wheel of a centrifugal fan according to an embodiment of the present invention.
  • FIG. 12 are shielding states of the respective damper flaps for respective air outlets in the 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 a schematic exploded view and a schematic exploded view of a partial structure of a centrifugal fan according to an embodiment of the present invention.
  • an embodiment of the present invention provides a centrifugal fan.
  • the centrifugal fan may include a housing 20, a wind wheel 30, a plurality of sets of damper flaps 40, a rotating member 50, and a 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 portion 21 can be passed to the cover through its edge
  • the clip extending from the portion 23 is engaged with the hole in the outer surface of the peripheral wall portion 22.
  • 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 sets of air outlets, and each group of air outlets has at least one air outlet.
  • the plurality of sets of air outlets may be three sets, and each set of air outlets may include two air outlets.
  • the plurality of sets of air outlets may also be 2 groups, 4 groups, 5 groups, and the like.
  • the wind wheel 30 may be a centrifugal type wind wheel, which may also be referred to as a centrifugal type impeller, and is rotatably mounted on the inner side surface of the bottom casing portion 21, and is configured to cause airflow from the air inlet to the casing 20 and through a plurality of air outlets.
  • a centrifugal type impeller is rotatably mounted on the inner side surface of the bottom casing portion 21, and is configured to cause airflow from the air inlet to the casing 20 and through a plurality of air outlets.
  • One or more of the outflow housings 20 One or more of the outflow housings 20.
  • the axis of rotation of the rotor 30 is preferably disposed coaxially with the air inlet.
  • Each set of damper flaps has at least one damper flap 40, each damper flap 40 is movably mounted to an air outlet, configured to be controlled to move to different occlusion positions to completely shield the vents Partially obscured or fully exposed to adjust the air outlet area of the air outlet. That is to say, the number and the number of the damper flaps are consistent with the number and number of the air outlets, so that each damper flap 40 can control the air volume of one air outlet. Further, each group of air outlets preferably includes a plurality of air outlets.
  • the group of flaps are preferentially set to synchronous movement; but the initial of the plurality of flappers 40 of the group The positions can be set at the same position or at different shaded positions to achieve a variety of air supply.
  • each of the damper flaps 40 of the set of damper flaps can also be set to be asynchronous.
  • the rotating member 50 is rotatably mounted to the housing 20 with its axis of rotation parallel to the axis of rotation of the rotor 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 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 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. And / or adjust the amount of airflow in each outlet duct.
  • each damper flap 40 is rotatably mounted to a respective air outlet.
  • the transmission mechanism 60 includes a plurality of link members 61, each of which directly or indirectly connects the rotor member 50 and each of the plurality of damper flaps 40. That is, the rotating member 50 is respectively coupled to the plurality of sets of the shutter members 40 via the plurality of link members 61 to transmit the motion.
  • each of the connecting members may be in the form of a rod or a plate or a block and is slidably mounted to the housing 20 in one direction.
  • each of the link members 61 is preferably slidably mounted to the housing in the radial direction of the rotating member 50. 20.
  • One or more cam grooves are opened on one side of the rotating member 50, and each of the link members 61 has a projection inserted into the cam groove at one end.
  • the cam groove may be one, such as the first cam groove 51, and each of the link members 61 has a projection inserted into the first cam groove 51 at one end.
  • the transmission of the movement between the rotating member 50 and the plurality of link 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 transmission mechanism 60 also includes a plurality of first gears 62.
  • Each of the first gears 62 is fixedly coupled to each of the plurality of damper flaps 40 of the plurality of damper flaps 40.
  • Each of the link members 61 has teeth that mesh with a corresponding first gear 62.
  • other mechanical transmission structures that enable rotational motion of the rotating member 50 to the damper flap 40 such as the four-link transmission mechanism 60, etc., may be utilized.
  • the first cam grooves 51 are bent and extended in the circumferential direction of the rotating member 50 and are connected end to end.
  • the bending extension can be such that when one link 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 link member 61 is in another position, the third link The piece is in one of the above positions, or the other position or the third position; and so on.
  • This arrangement can make the plurality of link members 61 in the same position or at least in two positions when the rotating member 50 moves, so that the damper flaps 40 can be in the same position or at least in two positions to perform the corresponding air outlets. Exposed or obscured.
  • a plurality of second cam grooves may also be used to control the movement of each of the link members 61, that is, a plurality of second cam grooves are formed on one side of the rotating member 50.
  • Each of the link 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, and at least one of the link members 61 is convexly inserted into a third cam.
  • the groove for example, two protrusions may be inserted into a portion of the third cam groove, and three protrusions or the like may be inserted into a portion of the third cam groove.
  • the bottom shell portion 21 includes a central bottom shell portion and a plurality of outlet duct bottom shell portions that extend uniformly outwardly from the central bottom shell portion.
  • the peripheral wall portion 22 and the cover portion 23 can be contoured and matched with the bottom shell portion 21 to form a central air inlet space and a plurality of air outlet passages; and the opening plane of the air outlet duct is flat to facilitate the installation of the damper flap 40 .
  • a flow guiding member that guides and causes the flow of the airflow is also disposed inside the casing 20.
  • Each of the outlet ducts may also be divided into a plurality of sections by a partition formed inside the casing 20 to form a plurality of outlet ducts.
  • the plurality of openings of the plurality of outlet ducts are a group of air outlets.
  • each group of air outlets may have two air outlets, and a partition wall 24 (ie, a partition separating the air ducts) is disposed between the two air outlets.
  • Guide grooves are defined in the partition wall 24; each link member 61 is mounted in a guide groove of a corresponding partition wall 24.
  • Each set of damper flaps 40 may include two damper flaps 40.
  • the two damper flaps 40 may be on both sides of the partition wall 24 and connected by a rotating shaft.
  • the first gear 62 may be mounted on the rotating shaft to simultaneously drive two The damper flaps 40 move.
  • the centrifugal fan may further include an adjustment motor 71 and a second gear 72.
  • the adjustment motor 71 is mounted in the housing 20.
  • the second 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, and the second gear 72 meshes 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 25 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 second 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 adjusting motor 71 outputs the shaft.
  • the upper gear 72 and the adjustment motor 71 can continue to rotate at an angle of less than or equal to 1°, and the motion is transmitted to the rotating member 50 under the action of a predetermined reduction ratio (for example, a predetermined reduction ratio of 8).
  • the angle at which the member 50 continues to rotate may be 0.125°, which greatly improves the rotational accuracy of the rotating member 50.
  • the wind wheel 30 may include a plurality of blades 31, a casing 32, an annular bottom plate 33 extending outwardly from the opening of the casing 32, and a reinforcing ring 34.
  • the angle between the circumferential side of the casing 32 and the axis of the casing 32 is 30 to 40.
  • the circumferential side surface of the casing 32 and the top end surface of the casing 32, and the annular bottom plate 33 are arc-shaped transition surfaces, 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 21, and the rotor of the wind turbine motor is mounted in the casing 32.
  • Each of the blades 31 extends from the surface of the annular bottom plate 33 toward the cover portion 23.
  • Strengthening ring 34 is provided on the outer side of the corners of the plurality of blades 31 adjacent to the cover portion 23 and the peripheral wall portion 22, and is integrally formed with the plurality of blades 31 by a plurality of connecting plates. The thickness of the connecting plate is smaller than the thickness of the blade 31.
  • each of the blades 31 includes a first section 311 and a second section 312 that are sequentially disposed in the radial direction of the wind wheel 30, the first section 311 and the second section 312 being perpendicular to the wind wheel 30
  • the projections in the plane of the axis of rotation are all circular arcs, and the arching directions of the first section 311 and the second section 312 are opposite.
  • the radius ratio of the first section 311 and the second section 312 is 0.18 to 0.3.
  • the central angle of the first section 311 ranges from 15° to 22°.
  • the central angle of the second section 312 ranges from 38° to 46°.
  • each of the blades 31 may be designed to gradually become thicker in a direction directed from the cover portion 23 toward the bottom case portion 21.
  • the plurality of damper flaps 40 in each set of damper flaps are preferably synchronized and co-located to maximize the amount of airflow from the plurality of vents in the respective sets of vents.
  • the cam member 50 preferably adopts a cam groove (ie, the first cam groove 51).
  • the partial group air outlets can be closed, and the partial group air outlets are opened, so that Select the air supply and air supply direction.
  • the number of air outlet groups may be three, including a first group of air outlets 221, a second group of air outlets 222, and a third group of air outlets 223.
  • the first group of air outlets 221, the second group of air outlets 222, and the third group of air outlets 223 may be in the circumferential direction of the peripheral wall portion 22 and may be in a counterclockwise direction (counterclockwise from the cover portion 23 toward the bottom case portion 21) The clockwise direction is viewed from the bottom case portion 21 toward the lid portion 23 in order.
  • the three link members 61 include a first link member, a second link member and a third link member, and the three sets of damper blocks 40 include a first set of damper flaps 41, a second set of damper flaps 42 and a third Group of flaps 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 link member, the second point and the third point are arranged in a counterclockwise direction (the angle of view shown in FIG. 5); and two of the three points Points (such as the first point and the second point, respectively) start to form a holding arc groove segment having the same radius as the first circumference in a counterclockwise direction (such as a first holding arc groove segment and a second holding arc groove segment, respectively), The length of the second retaining 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 (on the inner side of the first 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 smoothly connected to the fourth holding arc slot segment and the third point, and The first point.
  • the length of the fourth holding arc slot segment is greater than the third retaining arc slot segment.
  • the rotating member 50 When the centrifugal fan is working, when the rotating member 50 is moved to the position shown in FIG. 5, the three connecting rod members 61 are convexly farthest from the center of the rotating member 50, and the three groups of the flap members 40 can be first.
  • the group air outlet 221, the second group air outlet 222, and the third group air outlet 223 are all in a closed state.
  • the rotating member 50 is moved to the position shown in FIG. 6, the protrusion on the first link member is closest to the center of the rotating member 50, and the protrusion on the second link member and the third link member is away from the center of the rotating member 50.
  • the first group of flaps 41 can open the first group of air outlets 221, and the second group of flaps 42 and the third group of flaps 43 can respectively make the second group of air outlets 222 and the third group of air outlets 223 Is off.
  • the rotating member 50 is moved to the position shown in FIG. 7, the protrusion on the second link member is closest to the center of the rotating member 50, and the first link member and the third link member are raised from the center of the rotating member 50.
  • the second group of damper blocks 42 can open the second group of air outlets 222, and the first group of damper flaps 41 and the third group of damper flaps 43 can respectively make the first group of vents 221 and the third group of vents 223 Is off.
  • the protrusion on the third link member is closest to the center of the rotating member 50, and the first link member and the second link member are raised from the center of the rotating member 50.
  • the third group of flaps 43 can open the third group of air outlets 223, and the first group of flaps 41 and the second set of flaps 42 can respectively make the first group of air outlets 221 and the second group of air outlets 222 Both are off.
  • the protrusion on the third link member is farthest from the center of the rotating member 50, and the first link member and the second link member are raised from the rotating member 50.
  • the third group of damper flaps 43 can close the third group of air outlets 223, and the first group of damper flaps 41 and the second group of damper flaps 42 can open the first group of vents 221 and the second group of vents 222, respectively.
  • the protrusion on the second link member is farthest from the center of the rotating member 50, and the first link member and the third link member are raised from the rotating member 50.
  • the second group of damper blocks 42 can close the second group of air outlets 222, and the first group of damper flaps 41 and the third group of damper flaps 43 can open the first group of vents 221 and the third group of vents 223, respectively.
  • the rotating member 50 is moved to the position shown in FIG. 11, the protrusion on the first link member is farthest from the center of the rotating member 50, and the second link member and the third link member are raised from the rotating member 50.
  • the first group of flaps 41 can close the first group of air outlets 221, and the second group of flaps 42 and the third group of flaps 43 can open the second group of air outlets 222 and the third group of air outlets 223, respectively.
  • the rotating member 50 is moved to the position shown in FIG.
  • the protrusions of the three link members 61 are closest to the center of the rotating member 50, and the three groups of the shutter members 40 can make the first group of air outlets 221,
  • the second group of air outlets 222 and the third group of air outlets 223 are both Open state.

Abstract

一种离心风机，包括：壳体（20），其盖部（23）上开设有进风口，周壁部（22）上开设有多组出风口；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）；多组风门挡片（40），每个风门挡片（40）可运动地安装于一个出风口处，配置成受控地运动到不同的遮挡位置处，以对该出风口进行完全遮蔽、部分遮蔽或完全暴露，从而调整该出风口的出风面积；转动件（50），可转动地安装于壳体（20）；和传动机构，配置成将转动件（50）的旋转运动传递至多个风门挡片（40）。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。
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组出风口，每组所述出风口具有至少一个出风口；
风轮，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；
多组风门挡片，每组所述风门挡片具有至少一个风门挡片，每个所述风门挡片可运动地安装于一个所述出风口处，配置成受控地运动到不同的遮挡位置处，以对该出风口进行完全遮蔽、部分遮蔽或完全暴露，从而调整该出风口的出风面积；
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；和
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一个相应所述出风口处；
所述传动机构包括多个连杆件，每个所述连杆件直接或间接地连接所述转动件和一组所述风门挡片中的每个所述风门挡片。
可选地，每个所述连杆件均沿所述转动件的径向方向可滑动地安装于所述壳体；
所述转动件的一个侧面上开设有一个第一凸轮槽，每个所述连杆件一端具有插入所述第一凸轮槽的凸起；或，所述转动件的一个侧面上开设有多个第二凸轮槽，每个所述连杆件一端具有插入一个所述第二凸轮槽的凸起。
可选地，所述传动机构还包括多个第一齿轮，每个所述第一齿轮与一组所述风门挡片中每个所述风门挡片均固定连接；
每个所述连杆件上具有与一个相应所述第一齿轮啮合的齿牙。
可选地，所述第一凸轮槽沿所述转动件的周向方向弯折延伸且首尾相连。
可选地，每组所述出风口具有两个所述出风口，所述两个出风口之间设置有间隔壁，所述间隔壁内限定有导向槽；
每个所述连杆件安装于一个相应所述间隔壁的所述导向槽内。
可选地，所述离心风机还包括：
调节电机，安装于所述壳体内；
第二齿轮，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，所述第二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。
可选地，所述风轮的每个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扇叶、罩壳的特殊结构可使送风更加顺畅，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、转动件和传动机构等的特殊设计，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中局部结构的示意性分解图；
图4是根据本发明一个实施例的离心风机中风轮的示意性结构图；
图5至图12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和局部结构的示意性分解图。如图1至图3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、多组风门挡片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上开设有多组出风口，每组出风口具有至少一个出风口。例如，在图1所示的实施例中，多组出风口可为三组，每组出风口可包括两个出风口。在一些其他的实施例中，多组出风口也可为2组、4组、5组等。
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，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。
每组风门挡片具有至少一个风门挡片40，每个风门挡片40可运动地安装于一个出风口处，配置成受控地运动到不同的遮挡位置处，以对该出风口进行完全遮蔽、部分遮蔽或完全暴露，从而调整该出风口的出风面积。也就是说，风门挡片的组数和个数均与出风口的组数和个数一致，以使每个风门挡片40均可控制调节一个出风口的风量。进一步地，每组出风口优选包括多个出风口，对于每组出风口和相应的一组风门挡片，该组风门挡片优先设置为同步运动；但该组多个风门挡片40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。当然，该组风门挡片的每个风门挡片40也可设置为不同步运动。
转动件50可转动地安装于壳体20，且其旋转轴线平行于风轮30的旋转轴线。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。
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。而且，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可转动地安装于一个相应出风口处。传动机构60包括多个连杆件61，每个连杆件61直接或间接地连接转动件50和一组风门挡片40中的每个风门挡片40。也就是说，转动件50经由多个连杆件61分别与多组风门挡片40连接，以传递运动。进一步地，每个连接件可呈杆状或板状或块状，沿一方向可滑动地安装于壳体20。
在本发明的一些实施例中，为了使每个连杆件61便于接收来转动件50的旋转运动，每个连杆件61优选为沿转动件50的径向方向可滑动地安装于壳体20。转动件50的一个侧面上开设有一个或多个凸轮槽，每个连杆件61一端具有插入凸轮槽的凸起。例如，凸轮槽可为一个，如第一凸轮槽51，每个连杆件61一端具有插入第一凸轮槽51的凸起。也就是说，转动件50与多个连杆件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。为了使每个连杆件61快速方便地将运动传递至各组风门挡片40，传动机构60还包括多个第一齿轮62。每个第一齿轮62与一组风门挡片40中每个风门挡片40均固定连接。每个连杆件61上具有与一个相应第一齿轮62啮合的齿牙。在本发明的一些替代性实施例中，也可采用其它能够实现将转动件50的旋转运动传递至风门挡片40的机械传动结构，例如，四连杆传动机构60等。
在本发明的一些实施例中，第一凸轮槽51沿转动件50的周向方向弯折延伸且首尾相连。弯折延伸可使当一个连杆件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，另一连杆件61处于另一位置，第三连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运动时使多个连杆件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。在本发明的一些替代性实施例中，也可使用多个第二凸轮槽来控制每个连杆件61的运动，也就是说，转动件50的一个侧面上开设有多个第二凸轮槽，每个连杆件61一端具有插入一个第二凸轮槽的凸起。也就是说凸轮槽可为多个。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，至少一个连杆件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，底壳部21包括中央底壳部，以及从中央底壳部均匀地向外延伸出的多个出风道底壳部。周壁部22和盖部23均可与底壳部21仿形相配设计，以形成中央进风空间和多个出风道；且出风道的开口平面为平面，以便于风门挡片40的安装。壳体20内部还设置有引导和促使气流流动的导流部件。每个出风道也可被壳体20内部形成的分隔件分割成多个部分，以形成多个出风风道。多个出风风道的多个开口为一组出风口。 例如，每组出风口可具有两个出风口，两个出风口之间设置有间隔壁24(即分隔出风道的分隔件)。间隔壁24内限定有导向槽；每个连杆件61安装于一个相应间隔壁24的导向槽内。每组风门挡片40可包括两个风门挡片40，两个风门挡片40可处于间隔壁24的两侧，并通过转轴连接起来，第一齿轮62可安装于转轴上，以同时驱动两个风门挡片40运动。
在本发明的一些实施例中，离心风机还可包括调节电机71和第二齿轮72。调节电机71安装于壳体20内。第二齿轮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，第二齿轮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25，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输出轴上的第二齿轮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输出轴上的第二齿轮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，如图4所示，风轮30可包括多个扇叶31、罩壳32、从罩壳32的开口处向外延伸出的环形底板33，以及加强环34。罩壳32的周侧面与罩壳32的轴线之间的夹角为30°至40°。例如，罩壳32的周侧面与罩壳32的顶端表面，以及与环形底板33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21，风轮电机的转子安装于罩壳32内。每个扇叶31从环形底板33的朝向盖部23的表面延伸出。加强环 34设置于多个扇叶31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31一体成型。连接板的厚度小于扇叶31的厚度。
特别地，每个扇叶31包括沿风轮30的径向方向依次设置的第一区段311和第二区段312，第一区段311和第二区段312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311和第二区段312的拱起方向相反。进一步地，第一区段311和第二区段312的半径比为0.18至0.3。第一区段311的圆心角的取值范围为15°至22°。第二区段312的圆心角的取值范围为38°至46°。进一步地，每个扇叶31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，每组风门挡片中的多个风门挡片40优选为同步且同位置动作，以使相应组出风口中的多个出风口的出风量尽量一致。而且，转动件50上优选采用一个凸轮槽(即第一凸轮槽51)，当转动件50运动时，可使部分组出风口处于关闭状态，且使部分组出风口处于打开状态，以更好地选择送风风路和送风方向。例如，出风口组的数量可为三个，包括第一组出风口221、第二组出风口222和第三组出风口223。第一组出风口221、第二组出风口222和第三组出风口223可沿周壁部22的周向方向且可沿逆时针方向(从盖部23向底壳部21看呈逆时针方向，从底壳部21向盖部23看呈顺时针方向)依次间隔设置。三个连杆件61包括第一连杆件、第二连杆件和第三连杆件，三组风门挡片40包括第一组风门挡片41、第二组风门挡片42和第三组风门挡片43。
特别地，如图5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中与第一连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。
离心风机工作时，当转动件50运动到如图5所示的位置处时，三个连杆件61上凸起距离转动件50中心最远，此时三组风门挡片40可使第一组出风口221、第二组出风口222和第三组出风口223均处于关闭状态。当转动件50运动到如图6所示的位置处时，第一连杆件上凸起距离转动件50中心最近，第二连杆件和第三连杆件上凸起距离转动件50中心最远，第一组风门挡片41可打开第一组出风口221，第二组风门挡片42和第三组风门挡片43分别可使第二组出风口222和第三组出风口223处于关闭状态。当转动件50运动到如图7所示的位置处时，第二连杆件上凸起距离转动件50中心最近，第一连杆件和第三连杆件上凸起距离转动件50中心最远，第二组风门挡片42可打开第二组出风口222，第一组风门挡片41和第三组风门挡片43分别可使第一组出风口221和第三组出风口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，第三连杆件上凸起距离转动件50中心最近，第一连杆件和第二连杆件上凸起距离转动件50中心最远，第三组风门挡片43可打开第三组出风口223，第一组风门挡片41和第二组风门挡片42分别可使第一组出风口221和第二组出风口222均处于关闭状态。
当转动件50运动到如图9所示的位置处时，第三连杆件上凸起距离转动件50中心最远，第一连杆件和第二连杆件上凸起距离转动件50中心最近，第三组风门挡片43可关闭第三组出风口223，第一组风门挡片41和第二组风门挡片42分别可打开第一组出风口221和第二组出风口222。当转动件50运动到如图10所示的位置处时，第二连杆件上凸起距离转动件50中心最远，第一连杆件和第三连杆件上凸起距离转动件50中心最近，第二组风门挡片42可关闭第二组出风口222，第一组风门挡片41和第三组风门挡片43分别可打开第一组出风口221和第三组出风口223。当转动件50运动到如图11所示的位置处时，第一连杆件上凸起距离转动件50中心最远，第二连杆件和第三连杆件上凸起距离转动件50中心最近，第一组风门挡片41可关闭第一组出风口221，第二组风门挡片42和第三组风门挡片43分别可打开第二组出风口222和第三组出风口223。当转动件50运动到如图12所示的位置处时，三个连杆件61上凸起距离转动件50中心均最近，此时三组风门挡片40可使第一组出风口221、第二组出风口222和第三组出风口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组出风口，每组所述出风口具有至少一个出风口；
    风轮，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；
    多组风门挡片，每组所述风门挡片具有至少一个风门挡片，每个所述风门挡片可运动地安装于一个所述出风口处，配置成受控地运动到不同的遮挡位置处，以对该出风口进行完全遮蔽、部分遮蔽或完全暴露，从而调整该出风口的出风面积；
    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；和
    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一个相应所述出风口处；
    所述传动机构包括多个连杆件，每个所述连杆件直接或间接地连接所述转动件和一组所述风门挡片中的每个所述风门挡片。
  3. 根据权利要求2所述的离心风机，其特征在于，
    每个所述连杆件均沿所述转动件的径向方向可滑动地安装于所述壳体；
    所述转动件的一个侧面上开设有一个第一凸轮槽，每个所述连杆件一端具有插入所述第一凸轮槽的凸起；或，所述转动件的一个侧面上开设有多个第二凸轮槽，每个所述连杆件一端具有插入一个所述第二凸轮槽的凸起。
  4. 根据权利要求2所述的离心风机，其特征在于，
    所述传动机构还包括多个第一齿轮，每个所述第一齿轮与一组所述风门挡片中每个所述风门挡片均固定连接；
    每个所述连杆件上具有与一个相应所述第一齿轮啮合的齿牙。
  5. 根据权利要求4所述的离心风机，其特征在于，
    所述第一凸轮槽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4所述的离心风机，其特征在于，
    每组所述出风口具有两个所述出风口，所述两个出风口之间设置有间隔壁，所述间隔壁内限定有导向槽；
    每个所述连杆件安装于一个相应所述间隔壁的所述导向槽内。
  7. 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；
    第二齿轮，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，所述第二齿轮与所述齿圈啮合。
  8. 根据权利要求7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。
  9. 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。
  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沿由所述盖部指向所述底壳部的方向逐渐变厚。
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