CN105909558B - Impeller with variable runner width - Google Patents

Impeller with variable runner width Download PDF

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Publication number
CN105909558B
CN105909558B CN201610490727.1A CN201610490727A CN105909558B CN 105909558 B CN105909558 B CN 105909558B CN 201610490727 A CN201610490727 A CN 201610490727A CN 105909558 B CN105909558 B CN 105909558B
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China
Prior art keywords
disc
fixed
sliding
rear disc
transmission shaft
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CN201610490727.1A
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Chinese (zh)
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CN105909558A (en
Inventor
张惊涛
任建庆
骆洪
胥加成
顾信革
许天航
刘宏伟
王栋
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Jiangsu Panasia Medical Technology Group Co Ltd
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Jiangsu Panasia Medical Technology Group Co Ltd
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Priority to CN201610490727.1A priority Critical patent/CN105909558B/en
Publication of CN105909558A publication Critical patent/CN105909558A/en
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Publication of CN105909558B publication Critical patent/CN105909558B/en
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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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/388—Blades characterised by construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
    • F16H1/14—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising conical gears only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/039—Gearboxes for accommodating worm gears
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
    • H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel

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

Abstract

The invention discloses a variable runner width impeller, which comprises a sliding driving mechanism, a main transmission shaft, a front disc, a fixed rear disc, blades and a movable rear disc, wherein the sliding driving mechanism is arranged on the front disc; the fixed rear disc is fixed on the main transmission shaft; the two ends of each blade are respectively fixed on the front disc and the fixed rear disc, and the blades are provided with a plurality of blades which are uniformly distributed along the circumferential direction of the front disc and the fixed rear disc; the movable rear disc is arranged between the front disc and the fixed rear disc and is connected with the main transmission shaft in a sliding manner; the blades penetrate through the movable rear disc; the sliding driving mechanism drives the movable rear disc to slide on the main transmission shaft. The invention changes the width of the airflow channel between the movable rear disc and the front disc, realizes the change of the air supply and exhaust volume when the rotating speed is unchanged, the change of the air volume has no influence on the air pressure, the input power only changes in linear proportion to the change of the air volume, no unnecessary waste exists, the energy saving is effectively realized, and the increase of the air pressure and the increase of the noise caused by the increase of the air volume are avoided.

Description

Impeller with variable runner width
Technical Field
The invention relates to an impeller with a variable flow passage width.
Background
The variable air volume fan is widely applied, and the traditional variable air volume fan has the following two air volume adjusting methods: a. the air supply and exhaust amount is adjusted by changing the rotating speed of the impeller; b. the air supply and exhaust amount is adjusted by adopting a partial air flow backflow or bypass method. In the method a, the air volume of the fan is in direct proportion to the first power of the rotating speed, the air pressure is in direct proportion to the second power of the rotating speed, and the input power is in direct proportion to the third power of the rotating speed; the method b wastes the energy consumption of the fan in a whitish way when the air volume is low. In actual use, the air pressure or the total pressure of the fan needs to be changed rarely, and the traditional method for adjusting the air quantity by changing the rotating speed of the impeller cannot realize the air quantity adjustment under constant air pressure.
Disclosure of Invention
The invention aims to provide the impeller with the variable flow channel width, which only changes the air volume and does not change the air pressure, is more suitable for the actual requirement and can avoid unnecessary waste of energy.
The technical scheme for realizing the purpose of the invention is as follows: a variable runner width impeller comprises a sliding driving mechanism, a main transmission shaft, a front disc, a fixed rear disc, blades and a movable rear disc; the fixed rear disc is fixed on the main transmission shaft; the two ends of each blade are respectively fixed on the front disc and the fixed rear disc, and the blades are provided with a plurality of blades which are uniformly distributed along the circumferential direction of the front disc and the fixed rear disc; the movable rear disc is arranged between the front disc and the fixed rear disc and is connected with the main transmission shaft in a sliding manner; the blades penetrate through the movable rear disc; the sliding driving mechanism drives the movable rear disc to slide on the main transmission shaft.
The sliding driving mechanism comprises a sliding driving motor, a transmission assembly, a screw rod, a half-moon-shaped fixed shifting fork, a connecting bearing, an outer sliding disc, an inner assembling disc and a connecting rod; the sliding driving motor drives the screw rod to rotate through the transmission assembly; the half-moon-shaped fixed shifting fork is in threaded connection with the screw rod and is connected with the outer sliding disc through the connecting bearing; the outer sliding plate and the inner assembling plate are respectively positioned on two sides of the fixed rear plate; the outer sliding plate is connected with the main transmission shaft in a sliding manner; the inner assembly disc is fixed on the movable rear disc; the outer sliding plate and the movable rear plate are connected into a whole through a connecting rod penetrating through the fixed rear plate.
The slippage driving motor of the slippage driving mechanism adopts a direct current motor which is provided with a turbine reduction box and can rotate forward and backward.
The transmission component of the sliding driving mechanism comprises a driving bevel gear and a driven bevel gear which are meshed with each other; the driving bevel gear is fixed on an output shaft of the sliding driving motor; the driven bevel gear is fixed on the screw rod.
Two groups of transmission assemblies and screw rods of the sliding driving mechanism are arranged; the connecting rod is provided with a plurality of connecting rods.
A first external spline is arranged on the peripheral surface of the sliding connection part of the main transmission shaft and an external sliding disc of the sliding driving mechanism; a first inner spline matched with the first outer spline of the main transmission shaft is arranged in a central hole of an outer sliding disc of the sliding driving mechanism.
The fixed rear disc is provided with a first notch which can allow a connecting rod of the sliding driving mechanism to pass through but can ensure that the connecting rod does not contact the fixed rear disc when moving.
A second external spline is arranged on the outer peripheral surface of the sliding connection part of the main transmission shaft and the movable rear disc; and a second internal spline matched with the second external spline of the main transmission shaft is arranged in the central hole of the movable rear disc.
The blades are backward bent blades.
The movable rear disc is provided with a second notch which can allow the blade to pass through but ensures that the movable rear disc does not contact with the blade when moving.
By adopting the technical scheme, the invention has the following beneficial effects: (1) the invention changes the width of the airflow channel between the movable rear disc and the front disc, realizes the change of the air supply and exhaust volume when the rotating speed is unchanged, the change of the air volume has no influence on the air pressure, the input power only changes in linear proportion to the change of the air volume, no unnecessary waste exists, the energy saving is effectively realized, and the increase of the air pressure and the increase of the noise caused by the increase of the air volume are avoided.
(2) The movable rear disc moves between the front disc and the fixed rear disc, and stepless regulation of air volume can be realized.
(3) The main transmission shaft and the movable rear disc are in spline fit, so that the movable rear disc and the fixed rear disc are ensured to rotate at the same angular speed.
(4) The sliding driving motor of the sliding driving mechanism adopts a direct current motor which is provided with a turbine reduction box and can rotate forward and backward, the turbine reduction box has a self-locking function, the relative fixation of the position of the movable rear disc can be ensured, the horizontal sliding speed of the movable rear disc is low, and the dynamic balance interference and the airflow interference generated during sliding on the movable rear disc are small.
(5) The transmission components and the screw rods of the sliding driving mechanism are provided with two groups, so that the transmission is stable and reliable.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which
FIG. 1 is a schematic structural diagram of the present invention.
The reference numbers in the drawings are:
the device comprises a sliding driving mechanism 1, a sliding driving motor 11, a transmission assembly 12, a driving bevel gear 121, a driven bevel gear 122, a screw rod 13, a half-moon-shaped fixed shifting fork 14, a connecting bearing 15, an outer sliding disc 16, an inner assembling disc 17, a connecting rod 18, a main transmission shaft 2, a front disc 3, a fixed rear disc 4, blades 5 and a movable rear disc 6.
Detailed Description
(example 1)
Referring to fig. 1, the variable flow channel width impeller of the present embodiment includes a sliding driving mechanism 1, a main transmission shaft 2, a front disk 3, a fixed rear disk 4, blades 5, and a movable rear disk 6.
The fixed rear disc 4 is fixed on the main transmission shaft 2. Two ends of each blade 5 are respectively fixed on the front disc 3 and the fixed rear disc 4, the blades 5 are provided with a plurality of blades, and the plurality of blades 5 are uniformly distributed along the circumferential direction of the front disc 3 and the fixed rear disc 4. A movable rear disc 6 is provided between the front disc 3 and the fixed rear disc 4 and is slidably connected to the main drive shaft 2. The blades 5 extend through a movable back plate 6. The sliding driving mechanism 1 drives the movable rear disc 6 to slide on the main transmission shaft 2.
The sliding driving mechanism 1 comprises a sliding driving motor 11, a transmission assembly 12, a screw rod 13, a half-moon-shaped fixed shifting fork 14, a connecting bearing 15, an outer sliding disc 16, an inner assembling disc 17 and a connecting rod 18. The slippage driving motor 11 adopts a direct current motor which is provided with a turbine reduction box and can rotate forward and backward. Two sets of transmission assemblies 12 and screw rods 13 are provided. The sliding driving motor 11 drives the screw rod 13 to rotate through the transmission assembly 12. The transmission assembly 12 includes a driving bevel gear 121 and a driven bevel gear 122 that mesh with each other. The driving bevel gear 121 is fixed to an output shaft of the slip driving motor 11. The driven bevel gear 122 is fixed to the screw 13. The half-moon-shaped fixed shifting fork 14 is in threaded connection with the screw rod 13 and is connected with the outer sliding plate 16 through the connecting bearing 15. The outer sliding tray 16 and the inner fitting tray 17 are located on both sides of the fixed rear tray 4, respectively. The outer sliding plate 16 is slidably connected to the main drive shaft 2. The inner mounting plate 17 is fixed to the movable back plate 6. The outer sliding plate 16 is integrally connected with the movable rear plate 6 through a connecting rod 18 penetrating the fixed rear plate 4. The connecting rod 18 is provided with a plurality of rods. The outer peripheral surface of the sliding connection part of the main transmission shaft 2 and the outer sliding disc 16 of the sliding driving mechanism 1 is provided with a first outer spline. A first internal spline matched with the first external spline of the main transmission shaft 2 is arranged in the central hole of the external sliding disc 16 of the sliding driving mechanism 1.
The fixed rear disc 4 is provided with a first notch which can allow the connecting rod 18 of the sliding driving mechanism 1 to pass through but ensures that the connecting rod 18 does not contact the fixed rear disc 4 when moving. The outer peripheral surface of the sliding connection part of the main transmission shaft 2 and the movable rear disc 6 is provided with a second external spline. A second internal spline matched with the second external spline of the main transmission shaft 2 is arranged in the central hole of the movable rear disc 6. The blade 5 adopts a backward bending type blade. The movable back plate 6 is provided with a second notch which can allow the blade 5 to pass through but ensures that the movable back plate 6 does not contact with the blade 5 when moving.
The sliding driving motor 11 drives the screw rod 13 to rotate forward and backward through the transmission assembly 12, the screw rod 13 drives the half-moon-shaped fixed shifting fork 14 to slide left and right along the direction parallel to the main transmission shaft 2, and the half-moon-shaped fixed shifting fork 14 pulls the outer sliding disc 16 to rotate at a high speed on the main transmission shaft 2 and move left and right through the connecting bearing 15, so that the movable rear disc 6 is driven to change the actual air conveying quantity.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A variable flow channel width impeller characterized in that: comprises a sliding driving mechanism (1), a main transmission shaft (2), a front disc (3), a fixed rear disc (4), blades (5) and a movable rear disc (6); the fixed rear disc (4) is fixed on the main transmission shaft (2); two ends of each blade (5) are respectively fixed on the front disc (3) and the fixed rear disc (4), the blades (5) are provided with a plurality of blades, and the plurality of blades (5) are uniformly distributed along the circumferential direction of the front disc (3) and the fixed rear disc (4); the movable rear disc (6) is arranged between the front disc (3) and the fixed rear disc (4) and is in sliding connection with the main transmission shaft (2); the blades (5) penetrate through the movable rear disc (6); the sliding driving mechanism (1) drives the movable rear disc (6) to slide on the main transmission shaft (2); the sliding driving mechanism (1) comprises a sliding driving motor (11), a transmission assembly (12), a screw rod (13), a half-moon-shaped fixed shifting fork (14), a connecting bearing (15), an outer sliding disc (16), an inner assembling disc (17) and a connecting rod (18); the sliding driving motor (11) drives the screw rod (13) to rotate through the transmission assembly (12); the half-moon-shaped fixed shifting fork (14) is in threaded connection with the screw rod (13) and is connected with the outer sliding disc (16) through a connecting bearing (15); the outer sliding plate (16) and the inner assembling plate (17) are respectively positioned at two sides of the fixed rear plate (4); the outer sliding plate (16) is in sliding connection with the main transmission shaft (2); the inner assembly disc (17) is fixed on the movable back disc (6); the outer sliding plate (16) and the movable rear plate (6) are connected into a whole through a connecting rod (18) penetrating through the fixed rear plate (4); a first external spline is arranged on the peripheral surface of the sliding connection part of the main transmission shaft (2) and an external sliding disc (16) of the sliding driving mechanism (1); a first inner spline matched with a first outer spline of the main transmission shaft (2) is arranged in a central hole of an outer sliding disc (16) of the sliding driving mechanism (1); a second external spline is arranged on the peripheral surface of the sliding connection part of the main transmission shaft (2) and the movable rear disc (6); and a second internal spline matched with the second external spline of the main transmission shaft (2) is arranged in the central hole of the movable rear disc (6).
2. The variable flow channel width impeller of claim 1, wherein: the slippage driving motor (11) of the slippage driving mechanism (1) adopts a direct current motor which is provided with a turbine reduction box and can rotate forward and backward.
3. The variable flow channel width impeller of claim 1, wherein: the transmission assembly (12) of the sliding driving mechanism (1) comprises a driving bevel gear (121) and a driven bevel gear (122) which are meshed with each other; the driving bevel gear (121) is fixed on an output shaft of the sliding driving motor (11); the driven bevel gear (122) is fixed on the screw rod (13).
4. The variable flow channel width impeller of claim 1, wherein: two groups of transmission assemblies (12) and screw rods (13) of the sliding driving mechanism (1) are arranged; the connecting rods (18) are provided with a plurality of connecting rods.
5. The variable flow channel width impeller of claim 1, wherein: the fixed rear disc (4) is provided with a first notch which can allow a connecting rod (18) of the sliding driving mechanism (1) to pass through but ensures that the connecting rod (18) does not contact the fixed rear disc (4) when moving.
6. The variable flow channel width impeller of claim 1, wherein: the blades (5) adopt backward bending type blades.
7. The variable flow channel width impeller of claim 1, wherein: the movable rear disc (6) is provided with a second notch which can allow the blade (5) to pass through but ensures that the movable rear disc (6) does not contact with the blade (5) when moving.
CN201610490727.1A 2016-06-28 2016-06-28 Impeller with variable runner width Active CN105909558B (en)

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Application Number Priority Date Filing Date Title
CN201610490727.1A CN105909558B (en) 2016-06-28 2016-06-28 Impeller with variable runner width

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Application Number Priority Date Filing Date Title
CN201610490727.1A CN105909558B (en) 2016-06-28 2016-06-28 Impeller with variable runner width

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CN105909558A CN105909558A (en) 2016-08-31
CN105909558B true CN105909558B (en) 2020-02-04

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106438467A (en) * 2016-12-01 2017-02-22 中国矿业大学 Centrifugal fan and variable work condition adjustment method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB610063A (en) * 1944-11-20 1948-10-11 Evans Prod Co Variable pitch fan blade assembly
CN202001368U (en) * 2011-03-08 2011-10-05 宁波风机有限公司 Blade width regulating mechanism
CN205689490U (en) * 2016-06-28 2016-11-16 江苏环亚医用科技集团股份有限公司 A kind of flow-passage-changeable width impeller

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080003064A1 (en) * 2006-06-27 2008-01-03 Dry Air Technology Enhanced axial air mover system with alignment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB610063A (en) * 1944-11-20 1948-10-11 Evans Prod Co Variable pitch fan blade assembly
CN202001368U (en) * 2011-03-08 2011-10-05 宁波风机有限公司 Blade width regulating mechanism
CN205689490U (en) * 2016-06-28 2016-11-16 江苏环亚医用科技集团股份有限公司 A kind of flow-passage-changeable width impeller

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