CN205225794U - Self -adaptation refrigeration cycle's of in -band portion compound cold ventilation blower - Google Patents
Self -adaptation refrigeration cycle's of in -band portion compound cold ventilation blower Download PDFInfo
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- CN205225794U CN205225794U CN201521014499.8U CN201521014499U CN205225794U CN 205225794 U CN205225794 U CN 205225794U CN 201521014499 U CN201521014499 U CN 201521014499U CN 205225794 U CN205225794 U CN 205225794U
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- impeller
- motor
- guide vane
- rear guide
- air duct
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- 150000001875 compounds Chemical class 0.000 title abstract description 3
- 238000005057 refrigeration Methods 0.000 title abstract 2
- 238000009423 ventilation Methods 0.000 title abstract 2
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 230000003137 locomotive effect Effects 0.000 abstract description 6
- 230000008676 import Effects 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 239000003570 air Substances 0.000 description 53
- 230000007704 transition Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a self -adaptation refrigeration cycle's of in -band portion compound cold ventilation blower, the impeller is installed to the motor front end, the motor overcoat is equipped with interior dryer, interior dryer lies in the impeller rear and keeps the clearance, interior dryer peripheral hardware has back stator, the preceding cooling ring that is equipped with of back stator on the interior dryer, the cooling ring includes a set of cooling hole, set up a cooling hole before every back stator, the cooling hole is rectangularly poroid, its length direction keeps unanimous with back stator import flow angle, back stator is less than or equal to 1 times of fan blade root chord length apart from the impeller distance. Even the electric locomotive of new generation to speed per hour 200kmh still can satisfy lightweight, structure through the requirement of gathering, the noise is low.
Description
Technical field
The utility model relates to field of fluid machinery, is specifically related to a kind of multiple cold ventilator with inner self adaption cool cycles.
Background technique
Multiple cold ventilator is a kind of ventilator cooled for traction transformer of electric locomotive and traction convertor, is usually arranged on Compound cooling radiator transition air channel.Multiple cold ventilator is from roof or side air-breathing, and the wind of axially discharging, through transition air channel, blows to radiator, takes away the heat of tractive transformer and traction convertor work generation.Due to the restriction by car body axial space size, the axial dimension of axial-flow blower is general all shorter, according to carrying fan-cooled motor, motor will certainly be made to give prominence to outside fan air drum, put in transition air channel.Because axial-flow blower air-out is annular air-out, nearer apart from fan outlet, cooling air is more uneven, and the air quantity at the corresponding motor position of radiator can not reach designing requirement.Therefore, multiple air cooler, when axial condition is restricted, preferably adopts the motor of fan-free, to increase the distance of distance radiator.
The multiple cold ventilator that current employing does not carry fan cooled motor generally adopts and is shortened by air duct in propeller fan, allows motor is as much as possible to be exposed in air channel, utilizes axial incoming flow cooling motor.The disadvantage brought like this is: 1) interior air duct is too short, can cause the rear guide vane connecting inside and outside air duct also can be too short, thus affects air duct intensity.To the aluminum alloy air duct having lightweight requirements, more unfavorable.2) air duct is too short, the distance of rear guide vane distance impeller can be caused nearer, thus cause noise to increase.3) motor is because partial denudation is in runner, can cause motor exposed part and be wrapped part uneven in temperature, easily produce condensed water, unfavorable to motor.
Especially for the electric locomotive of new generation of speed per hour 200km/h, it has higher requirement to the noise of blower fan and weight, and air duct needs to adopt aluminum alloy material.According to the motor not with self-cooling fan that interior air duct shortens, fan noise and structural strength can be caused to be difficult to meet the demands.
Model utility content
The technical problem that the utility model solves is to provide a kind of multiple cold ventilator with inner self adaption cool cycles on interior air duct, is provided with the Cooling Holes that can automatically regulate air quantity to cool, and forms an internal cooling loop, specializes in motor cooling.
The technical solution adopted in the utility model is, with the multiple cold ventilator of inner self adaption cool cycles, motor front end is provided with impeller, and motor outer is equipped with interior air duct, and interior air duct is positioned at impeller rear and keeps gap, rear guide vane is provided with outside interior air duct, be provided with air ring before rear guide vane on interior air duct, air ring comprises one group of Cooling Holes, arranges a Cooling Holes before each rear guide vane, Cooling Holes is rectangular poroid, and its length direction and rear guide vane inlet air flow angle are consistent.
Rear guide vane distance impeller distance is less than or equal to 1 times of root of fan blade chord length.
The requirement that the beneficial effects of the utility model are satisfied electric locomotives of new generation to cold ventilator lightweight, structure again through gathering, noise is low, arrange a circle air ring before rear guide vane to cool for motor, be applicable in the electric locomotive of new generation of speed per hour 200km/h, rear guide vane distance impeller distance can reach 1 times of root of fan blade chord length, thus arrives the object reducing noise.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is self adaption air ring cooling principle figure.
Be labeled as in figure: 1-impeller, air duct in 2-, 3-Cooling Holes, 4-rear guide vane, 5-motor, 6-zone of high pressure, 7-low pressure area.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
The multiple cold ventilator of band of the present utility model inner self adaption cool cycles, motor 5 front end is provided with impeller 1, interior air duct 2 is set with outside motor 5, interior air duct 2 is positioned at impeller 1 rear and keeps gap, is provided with rear guide vane 4, it is characterized in that outside interior air duct 2: the rear guide vane 4 on interior air duct 2 is provided with air ring above, air ring comprises one group of Cooling Holes 3, arrange a Cooling Holes 3 before each rear guide vane 4, Cooling Holes 3 is in rectangular poroid, and its length direction and rear guide vane 4 inlet air flow angle are consistent.As shown in Figure 1, for satisfied electric locomotive of new generation to cold ventilator lightweight, structure again through gathering, requirement that noise is low, in this ventilator, air duct 2 size can lengthen, covering motor 5 as much as possible; Rear guide vane 4 arranges a circle air ring above and cools for motor.Rear guide vane 4 can reach 1 times of root of fan blade chord length apart from impeller 1 distance, thus arrives the object reducing noise.
As shown in Figure 2, ambient air is inhaled into draught fan impeller 1 and by rear guide vane 4, pressure gets a promotion.The pressure exported due to air duct rear guide vane 4 is higher than the pressure of import, air-flow is utilized to have from high-pressure spray to the characteristic to low pressure, zone of high pressure 6 from rear air duct end is entered the passage between motor 5 and interior air duct 2 by air, continuous cooling motor, overcomes resistance simultaneously, and air pressure reduces, when the air pressure of cooling motor is consistent with the pressure at the air ring place being positioned at rear guide vane 4 import, form relative low pressure area 7, hot air flows out from Cooling Holes 3, imports main air flow.Because axial-flow blower is when region of stability, along with the increase of flow, fan static pressure is in continuous reduction.And at this moment, although pressure is low, air quantity is large.When flow is little time, pressure increases, and final air quantity also can meet motor to cooling requirement.
For guaranteeing that air-flow meets the demands to motor cooling, the aperture position of air ring and Cooling Holes 3 size in conjunction with Three-Dimensional Flow Field Analysis, by the calculating to motor 5 surface wind speed, need guarantee that the wind speed flowing through motor meets the demands.For the power of motor for 20kW, air ring is arranged on the position apart from outer stator 10mm, Cooling Holes 3 is in rectangular poroid, simultaneously for reducing the interference to main air flow, angle and the rear guide vane 4 inlet air flow angle of Cooling Holes 3 opening are consistent, Cooling Holes 3 quantity on air ring is consistent with rear guide vane 4 quantity, finally can ensure that the airspeed of cooling motor reaches more than 10m/s.
Claims (2)
1. be with the multiple cold ventilator of inner self adaption cool cycles, motor (5) front end is provided with impeller (1), interior air duct (2) is set with outside motor (5), interior air duct (2) is positioned at impeller (1) rear and keeps gap, rear guide vane (4) is provided with outside interior air duct (2), it is characterized in that: the rear guide vane (4) on interior air duct (2) is provided with air ring above, air ring comprises one group of Cooling Holes (3), each rear guide vane (4) is front arranges a Cooling Holes (3), Cooling Holes (3) is in rectangular poroid, its length direction and rear guide vane (4) inlet air flow angle are consistent.
2. the multiple cold ventilator of the inner self adaption cool cycles of band as claimed in claim 1, is characterized in that: rear guide vane (4) distance impeller (1) distance is less than or equal to 1 times of root of fan blade chord length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521014499.8U CN205225794U (en) | 2015-12-08 | 2015-12-08 | Self -adaptation refrigeration cycle's of in -band portion compound cold ventilation blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521014499.8U CN205225794U (en) | 2015-12-08 | 2015-12-08 | Self -adaptation refrigeration cycle's of in -band portion compound cold ventilation blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205225794U true CN205225794U (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521014499.8U Active CN205225794U (en) | 2015-12-08 | 2015-12-08 | Self -adaptation refrigeration cycle's of in -band portion compound cold ventilation blower |
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| CN (1) | CN205225794U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317716A (en) * | 2015-12-08 | 2016-02-10 | 中车大连机车研究所有限公司 | Compound cooling ventilator with interior self-adaption cooling circulation |
| CN111379715A (en) * | 2018-12-28 | 2020-07-07 | 日本电产株式会社 | Air supply device |
| US11732721B2 (en) | 2021-04-29 | 2023-08-22 | Napalmi Tietotekniikka Oy | Fan |
-
2015
- 2015-12-08 CN CN201521014499.8U patent/CN205225794U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317716A (en) * | 2015-12-08 | 2016-02-10 | 中车大连机车研究所有限公司 | Compound cooling ventilator with interior self-adaption cooling circulation |
| CN111379715A (en) * | 2018-12-28 | 2020-07-07 | 日本电产株式会社 | Air supply device |
| CN111379715B (en) * | 2018-12-28 | 2021-09-17 | 日本电产株式会社 | Air supply device |
| US11732721B2 (en) | 2021-04-29 | 2023-08-22 | Napalmi Tietotekniikka Oy | Fan |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |