CN201050495Y - Two-stage axial-flow draught fan - Google Patents
Two-stage axial-flow draught fan Download PDFInfo
- Publication number
- CN201050495Y CN201050495Y CNU2007200365487U CN200720036548U CN201050495Y CN 201050495 Y CN201050495 Y CN 201050495Y CN U2007200365487 U CNU2007200365487 U CN U2007200365487U CN 200720036548 U CN200720036548 U CN 200720036548U CN 201050495 Y CN201050495 Y CN 201050495Y
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- Prior art keywords
- motor
- impeller
- axle sleeve
- double
- utility
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- Expired - Fee Related
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Abstract
The utility model provides a double-pole axial blower. The utility model is characterized in that an axle sleeve is arranged on the two end of the double-shaft motor, the axle sleeve is conic, a cooling pipe in a cooling device is arranged between an outer cylinder and an intermediate cylinder; one end of the cooling pipe is connected with the outside around the motor in an intermediate barrel, static blades are arranged on the rear of a first grade impeller, a flow collector is arranged in front of the first grade impeller, one end of the double-pole motor is connected with the first grade impeller. A second grade impeller is connected with the other end of the double-shaft motor, a supporting seat is fixed between the outer cylinder and the intermediate cylinder, and a footing is arranged on the bottom of the outer cylinder. Due to the self-locking function, the conic axle sleeve can effectively lock the impeller and the shaft of the motor axially for reliable contact. The axial concentricity can be ensured, the installation and disassembly are greatly facilitated, and the assemblage precision of the whole machine is improved. The negative-pressure current produced by the rotation of the second grade impeller can perform the effective cooling effect. The utility model has the advantages of simple structure, rational and scientific design, stable and reliable performance, low cost, low noise and energy saving.
Description
Technical field
The utility model type relates to is a kind ofly to be used for transformer cooling in the electric locomotive, effectively to reduce noise, energy-conservation couple-stage axial-flow fans.Belong to the ventilator technical field.
Background technique
Traditional axial-flow blower is that rotor electric machine rotates by common electric machine, this motor axial dimension is big, therefore it has just determined and should have very long axial dimension by the series blower fan, waste material and space, this is obvious especially in size-constrained air-conditioning, simultaneously motor fixing also brought bigger difficulty, simple insufficient strength, flow, total head and the efficient of machine in complicated must the influence.In order to overcome above-mentioned defective, motor adopts external rotor electric machine, an end cap of motor and stator transfixion, and another end cap of motor and rotor rotate round motor shaft, the uniform blade positioning block of rotor outer rim five equilibrium, axial flow extension set flabellum is by being bolted on the positioning block.Yet it is big that it has a noise, pollutes to operating environment, influences work, defectives such as the cooling effect difference of motor.
Summary of the invention
The purpose of this utility model is the defective at above-mentioned existence, proposes the couple-stage axial-flow fans that a kind of noise is low, cooling effect is obvious, energy-conservation.
Technical solution of the present utility model: its structure is the two ends that axle sleeve is installed in dual-axle motor, described axle sleeve is tapered, cooling tube in the cooling unit is installed between urceolus and the middle tube, the motor external environment condition is joined in cooling tube one end and the middle bucket, the other end of cooling tube and the external environment condition of couple-stage axial-flow fans are joined, the air-flow environment that described motor external environment condition causes when referring to motor being cooled off.Quiet stator is contained in the back of one-level impeller, and slip ring is contained in one-level impeller front, and an end and the one-level impeller of dual-axle motor join, and the other end of sencond stage impeller and dual-axle motor joins, and supporting base is fixed between urceolus and the middle tube, and footing is installed in the bottom of urceolus.
Advantage of the present utility model: because axle sleeve is tapered, tapered hub has the effect of self-locking, and it can be effectively with axially locking between impeller and motor shaft, reliable contact.Thereby guarantee axial concentricity, greatly make things convenient for installing/dismounting, improve the assembly precision of complete machine.The negative-pressure air-flow that utilizes the sencond stage impeller rotation to produce produces the purpose that a kind of air-flow reaches cooling motor, the effect of its cooling motor is that prior art only can't be compared by the effect of motor fan cooling, and other signs an undertaking, and structure is simple, design science is reasonable, and is stable and reliable for performance, cost is low, motor speed is half of prior art with 1450 rev/mins, noise ratio prior art drop by half, thereby removed environmental pollution, improved operating conditions, not only noise reduction is simultaneously also energy-conservation.
Description of drawings
Accompanying drawing 1 be structural representation of the present utility model,
Accompanying drawing 2 is structural representations of blower fan air duct
Accompanying drawing 3 is left views of Fig. 2
Accompanying drawing 4 is right elevations of Fig. 2
Among the figure 1 is dual-axle motor, the 2nd, axle sleeve, the 3rd, cooling tube, the 4th, quiet stator, the 5th, slip ring, the 6th, one-level impeller, the 7th, sencond stage impeller, the 8th, supporting base, the 9th, urceolus, the 10th, footing, the 11st, middle tube.
Embodiment
The contrast accompanying drawing, its structure is the two ends that axle sleeve 2 is installed in dual-axle motor 1, described axle sleeve 2 is tapered, tapered hub has the effect of self-locking, it can be effectively will axially locking between impeller and motor shaft, reliable contact.Cooling tube 3 in the cooling unit is installed between urceolus 9 and the middle tube 11, the motor external environment condition is joined in cooling tube 3 one ends and the middle bucket 11, the other end of cooling tube and the external environment condition of couple-stage axial-flow fans are joined, the air-flow environment that described motor external environment condition causes when referring to motor being cooled off.Quiet stator 4 is contained in the back of one-level impeller 6, play the rectified action of one-level impeller 6, improve the total pressure efficiency of complete machine, slip ring 5 is contained in one-level impeller 6 fronts, plays a part to stablize to enter fan airflow, and an end and the one-level impeller 6 of dual-axle motor 1 join, sencond stage impeller 7 joins with the other end of dual-axle motor 1, supporting base 8 is fixed between urceolus 9 and the middle tube 11, and supporting base 8 supports the effect of dual-axle motor 1 Yu Static stator 4, and footing 10 is installed in the bottom of urceolus.
During work, air-flow enters one-level impeller 6 through slip ring 5, obtains kinetic energy, through quiet stator 4 rectifications, enters sencond stage impeller 7, pressurizes once more through sencond stage impeller 7.
Claims (1)
1. couple-stage axial-flow fans, it is characterized in that axle sleeve is installed in the two ends of dual-axle motor, described axle sleeve is tapered, cooling tube in the cooling unit is installed between urceolus and the middle tube, the motor external environment condition is joined in cooling tube one end and the middle bucket, the other end of cooling tube and the external environment condition of couple-stage axial-flow fans are joined, quiet stator is contained in the back of one-level impeller, slip ring is contained in one-level impeller front, one end and the one-level impeller of dual-axle motor join, the other end of sencond stage impeller and dual-axle motor joins, and supporting base is fixed between urceolus and the middle tube, and footing is installed in the bottom of urceolus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200365487U CN201050495Y (en) | 2007-04-04 | 2007-04-04 | Two-stage axial-flow draught fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200365487U CN201050495Y (en) | 2007-04-04 | 2007-04-04 | Two-stage axial-flow draught fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201050495Y true CN201050495Y (en) | 2008-04-23 |
Family
ID=39336982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200365487U Expired - Fee Related CN201050495Y (en) | 2007-04-04 | 2007-04-04 | Two-stage axial-flow draught fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201050495Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351861A (en) * | 2016-08-25 | 2017-01-25 | 昆明博远中菱科技有限公司 | Dual-pressure fan |
| CN110355022A (en) * | 2019-05-31 | 2019-10-22 | 武汉船用机械有限责任公司 | Work tooling for niggerhead |
| CN111927795A (en) * | 2020-08-20 | 2020-11-13 | 绍兴智新机电科技有限公司 | Two-stage axial flow low-noise fan |
-
2007
- 2007-04-04 CN CNU2007200365487U patent/CN201050495Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351861A (en) * | 2016-08-25 | 2017-01-25 | 昆明博远中菱科技有限公司 | Dual-pressure fan |
| CN110355022A (en) * | 2019-05-31 | 2019-10-22 | 武汉船用机械有限责任公司 | Work tooling for niggerhead |
| CN111927795A (en) * | 2020-08-20 | 2020-11-13 | 绍兴智新机电科技有限公司 | Two-stage axial flow low-noise fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080423 Termination date: 20130404 |