CN107165842A - Splash-proof low-power ventilator - Google Patents
Splash-proof low-power ventilator Download PDFInfo
- Publication number
- CN107165842A CN107165842A CN201710518241.9A CN201710518241A CN107165842A CN 107165842 A CN107165842 A CN 107165842A CN 201710518241 A CN201710518241 A CN 201710518241A CN 107165842 A CN107165842 A CN 107165842A
- Authority
- CN
- China
- Prior art keywords
- impeller
- housing
- rotating shaft
- opening
- tubular sections
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000009423 ventilation Methods 0.000 claims description 11
- 230000008676 import Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 10
- 238000004804 winding Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
- F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
-
- 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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/053—Shafts
-
- 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
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A splash-proof low-power ventilator, input power is within 500W, including the shell is the totally enclosed inner rotor motor and connects the impeller on the spindle of the motor; the section of the rotating shaft from the position outside the shell to the position extending into the shell is tubular; the tubular section of the rotating shaft, which is positioned outside the shell at one end, is provided with an opening leading to the negative pressure area of the impeller, and the tubular section of the rotating shaft, which is positioned outside the shell at the other end, is provided with an opening leading to the atmosphere; the tubular section of the shaft within the housing has an opening radially into the housing lumen. The design obviously reduces the temperature rise of the stator winding of the motor, and the structure is simpler, the reliability is better and the energy consumption is lower.
Description
Technical field
The present invention relates to a kind of preventing splash low power ventilation fan, IPC classification belong to F04D 13/06 or F04D 25/08 or
F04D 29/58。
Background technology
Preventing splash low power ventilation fan is to meet standard GB/T 4208《Shell protection grade》IPX4 test requirements documents, its electricity
Motivation housing tradition is totally-enclosed, though the entrance dabbled can be prevented directly, it separates the air exchange inside and outside housing, it is not easy to
The temperature in shell is reduced, it is particularly disadvantageous to the stator winding end that relies primarily on heat loss through convection.Relevant term reference mechanical industry
Publishing house's version in 1981《Ventilation blower》Or concerned countries standard.
The content of the invention
The technical problems to be solved by the invention are to propose a kind of preventing splash low power ventilation fan, can obviously reduce stator
The temperature rise of winding, but still meet the splashproof test requirements document of standard GB/T 4208.
The technical scheme that the present invention solves the technical problem is, a kind of preventing splash low power ventilation fan, input power
Within 500W, including housing is totally enclosed inner rotor motor and the impeller being hinged with the motor rotary shaft；Its feature exists
In：
--- position to the position section stretched into the housing that the rotating shaft is located at outside the housing certainly is tubulose；
--- the tubular sections that one end of the rotating shaft is located at outside the housing have the opening towards impeller negative pressuren zone, another
The tubular sections that end is located at outside the housing have the opening towards air；
--- the tubular sections that the rotating shaft is located in the housing have the opening for radially leading to the housing cavity.
According to the design, during motor operation, the rotation of rotating shaft transmission impeller is energized to air-flow, and the negative pressuren zone of impeller attracts axle
Air outflow in the opening for the tubular sections stretched, forms such as downstream flow：
--- the mouth of pipe of the non-impeller installation end of outside atmosphere axis of rotation right-hand member enters, and housing cavity is flow to along along pipe
Rotating shaft section, passes through the through hole that this section of tube wall radially leads to the housing cavity, into housing right side inner chamber, through the gas between rotor
Gap, reaches inner chamber on the right side of housing, through hole of the rotating shaft positioned at the tube wall of inner chamber section on the right side of housing is passed through, into rotating shaft pipe, from institute
Opening or the through hole outflow of shaft extension are stated, the negative pressure region of impeller is reached, air is discharged into by impeller.The air-flow is left and right by housing
Side inner chamber has good cooling effect to winding overhang, but housing is still to be totally-enclosed, located at the air-flow of two end shaft extensions import and export due to
Ventilation acc power is small and diameter is smaller and relative path is longer, and enters back into housing cavity through complications, and experiment shows to meet anti-
Splash test requirements document.The air-flow is produced by ventilation blower inherent structure, relatively simple for structure, without increasing power and cost, and real
Test the temperature rise for showing to can obviously reduce motor stator winding.
The present invention solves one of further design of technical scheme of the technical problem, and the impeller is axial-flow type leaf
Wheel, the opening that the tubular sections that one end of the rotating shaft is located at outside the housing lead to impeller negative pressuren zone is to be located at impeller hub to surround
Region；Or the impeller is receded disk impeller, the tubular sections that one end of the rotating shaft is located at outside the housing lead to impeller
The opening of negative pressuren zone is opening of the tubular sections radially towards the impeller blade import.The design makes the shaft extension end by impeller
The masking of structure, improves splashproof performance.
What the present invention solved the further design of the technical scheme of the technical problem two is, the non-installation impeller of rotating shaft
The opening that one end tubular sections lead to air is covered by a water retaining cover, to improve splashproof performance.
Technical solution of the present invention and its modular design will be further illustrated in a specific embodiment.
Brief description of the drawings
Fig. 1 is the 1st embodiment ventilator structure schematic diagram of the invention.
Fig. 2 is the 2nd embodiment ventilator structure schematic diagram of the invention.
Embodiment
1st embodiment of the invention is an axial fan, and it in the specification of existing product one is 400mm and specified input work to be
Rate forms to be improved on the basis of 150W axial fan, as shown in Figure 1.It mainly by motor 10 and is fixed on electronic
The aial flow impeller 41 that arbor is stretched is constituted.Motor 10 continue to use traditional closed cage-type rotor Induction Motor Structure (referring to
China Machine Press's nineteen eighty-two version《Design of electrical motor (first volume)》Enclosed motor shown in middle Fig. 8-3) design include：
--- support 5；
--- the end cap 70 at 5 axial direction of covering support, two ends；
--- the stator 3 of the inner chamber of support 5 is fixed on, stator 3 includes stator core and stator winding 31；
--- the rotor 2 of rotating shaft 1 is fixed on, rotor 2 includes rotor core, and rotating shaft 1 is supported on end cap 70 through bearing.
Design modification includes：
--- rotating shaft 1 is from shaft extension open-ended 11 until the position combined with rotor 2 is tubulose, and the leading portion of shaft extension inserts leaf
Fixing pipe 43 in the cylindric wheel hub 42 of wheel 41 is fixed, and fixing pipe 43 opens up 2 in adjacent place in front of shaft extension end 38 is open
Radial direction through hole 44；
--- the non-shaft stretching end of rotating shaft 1 is from open-ended 12 until the position combined with rotor 2 is also tubulose；
--- rotating shaft 1 respectively opens up 6 through holes 13,14 positioned at the tube wall that left and right tubular sections are such as schemed in the inner chamber of support 5；
--- the bucker 71 for being fixed on end cap 70 covers non-shaft stretching end from open-ended 12, and bucker 71, which has, radially to be passed through
Through hole 72 inside and outside logical cover.
During the motor operation, the driven impeller 41 of rotating shaft 1 rotates energizes to air-flow, the through hole of outside atmosphere self waterproofing cover 71
72 enter in cover, and then the non-shaft stretching end opening 12 of the axis of rotation 1 enters in the left tubular sections pipe of rotating shaft 1, and this section of tube wall is flow to along along pipe
Through hole 14, from after the outflow of through hole 14, through the air gap between stator 3 and rotor 2, where reaching the right tubular sections of rotating shaft 1 in support 5
Chamber, then passes through the through hole 13 of this section of tube wall, into rotating shaft pipe, from open-ended 11 outflow of shaft extension, then through in wheel hub 42
2 radial direction through hole 44 of fixing pipe 43 reach wheel hub 42 inner chamber, because blade admittance area larger with negative pressure herein is connected,
Thus sucked by impeller 41, be discharged into air.
2nd embodiment of the invention is a centrifugal fan, and it in the specification of existing product one is 150mm and specified input work to be
Rate to improve and forming on the basis of 70W centrifugal fan, as shown in Fig. 2 and the title with the structure of Fig. 1 same sequence numbers and
Effect is identical.The difference of itself and the 1st embodiment essentially consist in aeration structure form change and its with the shaft extension of motor 10
Attachment structure, including：
--- centrifugal spiral case 50 couples with support 10, and it has air inlet 51 and air outlet 52；It is placed on the shaft extension of rotating shaft 1
Receded disk impeller 58, it is made up of straight shroud, hub disk and the radial vane 57 being clipped in therebetween, is connected in hub disk
Wheel hub fastening open up 4 radial direction through hole 55, the collar extension direction of through hole 55 in the cylindrical of the shaft extension of rotating shaft 1, this section of shaft extension and wheel hub
The inlet side of blade 57, internal orifice is connected with rotating shaft inner tube.
When motor 10 is operated, the driven impeller 58 of rotating shaft 1 rotates energizes to air-flow, the through hole of outside atmosphere self waterproofing cover 71
72 enter in cover, and then the non-shaft stretching end opening 12 of the axis of rotation 1 enters in the left tubular sections pipe of rotating shaft 1, and this section of tube wall is flow to along along pipe
Through hole 14, from after the outflow of through hole 14, through the air gap between stator 3 and rotor 2, where reaching the right tubular sections of rotating shaft 1 in support 5
Chamber, then passes through the through hole 13 of this section of tube wall, into rotating shaft pipe, and 4 radial direction through hole 55 opened up from shaft extension and wheel hub flow out,
Then radially thrown away through blade 57 and shroud, the road of leaf one by one of hub disk composition, reach exhaust outlet 52 and be discharged into air.The exhaust is certainly
So also include the primary air from air inlet.
2nd embodiment can have following design to change：
--- tubular sections are closed in end face in the axle of the shaft extension of rotating shaft 1 shown in Fig. 2, are herein after testing such as negative pressure, also may be used
It is changed to not close, i.e., with tubular sections insertion in axle, throughput to increase.Now, 4 radial direction through hole that shaft extension and wheel hub are opened up
55 can also cancel, to increase the intensity of axle；
--- blade 57 can also be changed to backward type, to improve efficiency.
Claims (3)
1. within a kind of preventing splash low power ventilation fan, input power 500W, including housing is totally enclosed inner rotor motor
With the impeller being hinged with the motor rotary shaft；It is characterized in that：
--- position to the position section stretched into the housing that the rotating shaft is located at outside the housing certainly is tubulose；
--- the tubular sections that one end of the rotating shaft is located at outside the housing have the opening towards impeller negative pressuren zone, other end position
There is the opening towards air in the tubular sections outside the housing；
--- the tubular sections that the rotating shaft is located in the housing have the opening for radially leading to the housing cavity.
2. according to ventilation blower described in claim 1, it is characterised in that：The impeller is aial flow impeller, one end of the rotating shaft
The opening that tubular sections outside the housing lead to impeller negative pressuren zone is to be located at the region that impeller hub is surrounded；Or the leaf
Take turns as receded disk impeller, the opening that the tubular sections that one end of the rotating shaft is located at outside the housing lead to impeller negative pressuren zone is the pipe
Opening of the shape section radially towards the impeller blade import.
3. according to ventilation blower described in claim 1 or claim 2, it is characterised in that：The rotating shaft is non-to install the end pipe of impeller one
The opening that shape section leads to air is covered by a water retaining cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710518241.9A CN107165842A (en) | 2017-06-30 | 2017-06-30 | Splash-proof low-power ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710518241.9A CN107165842A (en) | 2017-06-30 | 2017-06-30 | Splash-proof low-power ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107165842A true CN107165842A (en) | 2017-09-15 |
Family
ID=59826772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710518241.9A Pending CN107165842A (en) | 2017-06-30 | 2017-06-30 | Splash-proof low-power ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107165842A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2823608Y (en) * | 2005-10-09 | 2006-10-04 | 李锦标 | Fan |
| CN202001382U (en) * | 2011-03-08 | 2011-10-05 | 宁波风机有限公司 | Cooling device for fan bearing |
| JP2013057300A (en) * | 2011-09-09 | 2013-03-28 | Panasonic Corp | Electric blower and vacuum cleaner using the same |
| CN203641115U (en) * | 2013-10-21 | 2014-06-11 | 衡阳市鸿虎仪器机械有限公司 | Bearing cooling device for circulating fan |
| KR20170061507A (en) * | 2015-11-26 | 2017-06-05 | 한온시스템 주식회사 | Air blower for vehicle |
| CN106877577A (en) * | 2017-04-18 | 2017-06-20 | 叶露微 | Fully-enclosed motor with shaft extending and connecting impeller |
-
2017
- 2017-06-30 CN CN201710518241.9A patent/CN107165842A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2823608Y (en) * | 2005-10-09 | 2006-10-04 | 李锦标 | Fan |
| CN202001382U (en) * | 2011-03-08 | 2011-10-05 | 宁波风机有限公司 | Cooling device for fan bearing |
| JP2013057300A (en) * | 2011-09-09 | 2013-03-28 | Panasonic Corp | Electric blower and vacuum cleaner using the same |
| CN203641115U (en) * | 2013-10-21 | 2014-06-11 | 衡阳市鸿虎仪器机械有限公司 | Bearing cooling device for circulating fan |
| KR20170061507A (en) * | 2015-11-26 | 2017-06-05 | 한온시스템 주식회사 | Air blower for vehicle |
| CN106877577A (en) * | 2017-04-18 | 2017-06-20 | 叶露微 | Fully-enclosed motor with shaft extending and connecting impeller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170915 |
|
| RJ01 | Rejection of invention patent application after publication |