CN203463193U - Miniature turbojet engine - Google Patents
Miniature turbojet engine Download PDFInfo
- Publication number
- CN203463193U CN203463193U CN201320457237.3U CN201320457237U CN203463193U CN 203463193 U CN203463193 U CN 203463193U CN 201320457237 U CN201320457237 U CN 201320457237U CN 203463193 U CN203463193 U CN 203463193U
- Authority
- CN
- China
- Prior art keywords
- starting motor
- impeller shaft
- cowling
- shaft
- impeller
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a miniature turbojet engine. The miniature turbojet engine is characterized in that a combustion box (1), a fairing (2) and an exhaust nozzle (3) form an enclosure of the engine, an impeller shaft (4) is rotatably arranged in the enclosure, the front end of the impeller shaft (4) is sleeved with a centrifugal impeller (5), a front shaft nut (6) is arranged at the end part of the front end of the impeller shaft (4), the rear end of the impeller shaft (4) is sleeved with a working turbine (7), a rear shaft nut (8) is arranged at the end part of the rear end of the impeller shaft (4), a shell of a starting motor (9) and the middle of the front end of the fairing (2) are fixed through multiple bolts (11) uniformly distributed on the periphery, an output shaft of the starting motor (9) stretches into the fairing (2), and a clutch (10) matched with the front shaft nut (6) is arranged on an output shaft of the starting motor (9). The miniature turbojet engine has the advantages of being capable of facilitating the installation of the starting motor and ensuring the reliable connection of the starting motor.
Description
Technical field
The utility model belongs to technical field of engines, specifically, and particularly a kind of miniature turbine jet engines.
Background technique
At present; the turbogenerator that aviation model plane or baby plane adopt is generally arranged at starting motor on former dome; starting motor is arranged in the guard shield of special setting; and be fixed by parts such as pillars, also needing to be equipped with in addition rotation prevention structure, starting motor mounting structure parts used are more like this; not only can increase cost of production; and starting motor assembly technology is complicated, dismounting is difficulty comparatively, and efficiency of assembling is lower.Meanwhile, the ear end face of turbogenerator rear end jet pipe is plane, and noise reduction effect is not obvious, and noise during engine operation is larger.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of miniature turbine jet engines that can facilitate starting motor assembling.
The technical solution of the utility model is as follows: a kind of miniature turbine jet engines, comprise combustion box (1), starting motor (9) and clutch (10), front end at combustion box (1) is installed cowling (2), jet pipe (3) is installed in rear end, described combustion box (1), cowling (2) and jet pipe (3) form the casing of motor, in casing, be provided with rotationally impeller shaft (4), the front end suit centrifugal impeller (5) of this impeller shaft (4), and before install the front end end of impeller shaft (4) spindle nut (6), at the rear end of described impeller shaft (4) suit work turbine (7), and in the end, rear end of impeller shaft (4), rear axle nut (8) is installed, its key is: the housing of described starting motor (9) fixes by equally distributed many screws (11) on circumference and the middle part of cowling (2) front end, the output shaft of starting motor (9) stretches in cowling (2), the clutch (10) matching with described front spindle nut (6) is installed on the output shaft of starting motor (9).
The utility model is directly installed on starting motor the medium position of cowling front end, install on required parts, not only easy for installation, quick, can effectively reduce production costs, and starting motor is connected firmly on cowling, reliably, can not occur loosening or come off.
Cave in backward in the middle part of described cowling (2) front end, be formed with circular locating slot, the housing of described starting motor (9) embeds in this locating slot, and the housing of starting motor (9) and the bottom land of locating slot fit, fastening by the screw wearing from back to front (11).Area of contact between above structure one side starting motor and cowling is large, can guarantee the steadiness connecting; On the other hand, turn screw operation very simple, be conducive to assemble fast.
In order to improve the reliability of Engage and disengage between the same spindle nut of starting motor output shaft, described clutch (10) is free wheel device.
One circle of described jet pipe (3) ear end face for zigzag fashion, can play the effect of noise abatement like this, the noise when reducing engine operation.
As preferably, the degree of depth of described jet pipe (3) ear end face sawtooth is 3-6mm.
Beneficial effect: the utility model can facilitate starting motor to install, and it is firm to guarantee that starting motor connects, and has the features such as design is ingenious, simple in structure, reliable performance, noise is little, transformation is easy, reforming cost is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
As shown in Figure 1, at the front end fixed installation cowling 2 of combustion box 1, rear end fixed installation jet pipe 3, described combustion box 1, cowling 2 and jet pipe 3 form the casing of motor.In casing, be fixedly installed bearing support 12, in this bearing support 12, wear impeller shaft 4, impeller shaft 4 supports with bearing support 12 mutually by former and later two bearings, and impeller shaft 4 can be with respect to bearing support 12 rotations.Front end at described impeller shaft 4 overlaps centrifugal impeller 5 admittedly, and before install the front end end of impeller shaft 4 spindle nut 6, these front spindle nut 6 and impeller shaft 4 screw-thread fit.In the place ahead of front spindle nut 6, be provided with starting motor 9, this starting motor 9 is positioned at the outside of cowling 2, cave in backward in the middle part of described cowling 2 front ends, be formed with circular locating slot, the housing of described starting motor 9 embeds in this locating slot backward, and the housing end face of starting motor 9 and the bottom land of locating slot fit, fastening by many screws 11 that wear from back to front, screw 11 is pressed even circumferential and is distributed.The clutch 10 matching with described front spindle nut 6 is installed on the output shaft of starting motor 9, and clutch 1 can engage with front spindle nut 6 or be separated, and this clutch 10 is preferably free wheel device.
As shown in Figure 1, at the rear end of impeller shaft 4 suit work turbine 7, and in the end, rear end of impeller shaft 4, rear axle nut 8 is installed, rear axle nut 8 and impeller shaft 4 screw-thread fit, and rear axle nut 8 is arranged in fairing cone 13, this fairing cone 13 is positioned at the inside of jet pipe 3, and a circle of described jet pipe 3 ear end faces is zigzag fashion, and the degree of depth of jet pipe 3 ear end face sawtooth is 3-6mm.
All the other internal structures of the present utility model are same as the prior art such as firing chamber, spray bar, mist pipe etc., and therefore not to repeat here; The working principle of turbojet engine is same as the prior art, at this, does not also repeat.
Claims (5)
1. a miniature turbine jet engines, comprise combustion box (1), starting motor (9) and clutch (10), front end at combustion box (1) is installed cowling (2), jet pipe (3) is installed in rear end, described combustion box (1), cowling (2) and jet pipe (3) form the casing of motor, in casing, be provided with rotationally impeller shaft (4), the front end suit centrifugal impeller (5) of this impeller shaft (4), and before install the front end end of impeller shaft (4) spindle nut (6), at the rear end of described impeller shaft (4) suit work turbine (7), and in the end, rear end of impeller shaft (4), rear axle nut (8) is installed, it is characterized in that: the housing of described starting motor (9) fixes by equally distributed many screws (11) on circumference and the middle part of cowling (2) front end, the output shaft of starting motor (9) stretches in cowling (2), the clutch (10) matching with described front spindle nut (6) is installed on the output shaft of starting motor (9).
2. miniature turbine jet engines according to claim 1, it is characterized in that: cave in backward in the middle part of described cowling (2) front end, be formed with circular locating slot, the housing of described starting motor (9) embeds in this locating slot, and the housing of starting motor (9) and the bottom land of locating slot fit, fastening by the screw wearing from back to front (11).
3. miniature turbine jet engines according to claim 1 and 2, is characterized in that: described clutch (10) is free wheel device.
4. miniature turbine jet engines according to claim 1 and 2, is characterized in that: a circle of described jet pipe (3) ear end face is zigzag fashion.
5. miniature turbine jet engines according to claim 4, is characterized in that: the degree of depth of described jet pipe (3) ear end face sawtooth is 3-6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320457237.3U CN203463193U (en) | 2013-07-29 | 2013-07-29 | Miniature turbojet engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320457237.3U CN203463193U (en) | 2013-07-29 | 2013-07-29 | Miniature turbojet engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463193U true CN203463193U (en) | 2014-03-05 |
Family
ID=50175563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320457237.3U Expired - Fee Related CN203463193U (en) | 2013-07-29 | 2013-07-29 | Miniature turbojet engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463193U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819053A (en) * | 2015-05-26 | 2015-08-05 | 天峋创新（北京）科技有限公司 | Turbine shaft engine with built-in electromagnetic valve |
| CN105422313A (en) * | 2015-12-09 | 2016-03-23 | 南京航空航天大学 | Miniature turbofan engine separate exhausting device with rectifier |
| CN108612588A (en) * | 2018-04-18 | 2018-10-02 | 常州环能涡轮动力股份有限公司 | Miniature aviation whirlpool axis drive system |
-
2013
- 2013-07-29 CN CN201320457237.3U patent/CN203463193U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819053A (en) * | 2015-05-26 | 2015-08-05 | 天峋创新（北京）科技有限公司 | Turbine shaft engine with built-in electromagnetic valve |
| CN105422313A (en) * | 2015-12-09 | 2016-03-23 | 南京航空航天大学 | Miniature turbofan engine separate exhausting device with rectifier |
| CN108612588A (en) * | 2018-04-18 | 2018-10-02 | 常州环能涡轮动力股份有限公司 | Miniature aviation whirlpool axis drive system |
| CN108612588B (en) * | 2018-04-18 | 2024-03-22 | 常州环能涡轮动力股份有限公司 | Miniature aviation vortex shaft driving system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20170729 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |