CN205858493U

CN205858493U - A kind of little Micro Turbine Jet Engine

Info

Publication number: CN205858493U
Application number: CN201620453233.1U
Authority: CN
Inventors: 罗立峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-05-19
Filing date: 2016-05-18
Publication date: 2017-01-04
Anticipated expiration: 2026-05-18
Also published as: CN105888847B; WO2016184417A1; CN106026491A; CN105889326B; CN106026491B; CN105889099A; CN105888819B; TWI676735B; TW201706496A; CN105888847A; WO2016184415A1; TW201711350A; CN205858958U; CN205858960U; WO2016184409A1; CN205864142U; TWI699077B; WO2016184407A1; CN105889325B; CN105888819A

Abstract

The utility model discloses a kind of little Micro Turbine Jet Engine, it includes turbine, compressor, rotating shaft, 2 journal bearings, 1 thrust bearing and combustor, described journal bearing is hybrid kinetic pressure gas journal bearing, described thrust bearing is hybrid kinetic pressure gas thrust bearing, described combustor is set in the middle part of rotating shaft, 2 journal bearings are respectively sleeved in the rotating shaft being positioned at combustor, and described thrust bearing is set in the rotating shaft being positioned between combustor and pinch roller.This utility model may be implemented in the ultrahigh speed steady running under air supporting state, for equal-wattage requirement, the volume of turbojet engine can be made to be substantially reduced realization miniaturization.

Description

A kind of little Micro Turbine Jet Engine

Technical field

This utility model relates to a kind of little Micro Turbine Jet Engine, belongs to high-accuracy field of mechanical technique.

Background technology

The principle of turbojet engine is to utilize compressor to be gone from air inlet inspiration by air, and air is compressed to combustor In, the pressure-air after compression and mist of oil mixed gas are lighted by atomizer to the oil plant of combustor ejection atomization, igniter, Mixed gas burning expansion, promotes turbine to rotate, after the turbine of rotation drives compressor mixture combustion to expand through turbine, and combustion Gas after burning sprays from puff prot, thus produces thrust.Wherein compressor and turbo blade are fixedly installed on axis, calm the anger Machine, turbo blade, axis constitute assembly rotary type be arranged in engine casing, for realize to compressor, turbo blade, in Axle constitutes the rotational support of assembly, and described axis is provided with bearing；Due to thrust-weight ratio with physical dimension inversely, right In small-size turbojet engine, to realize big thrust loading, it is necessary to bearing can realize ultrahigh speed steady running, but traditional oils system bearing There is limit speed, when rotating shaft rotating speed oversteps the extreme limit rotating speed, bearing temperature rise can be made high, make bearing easily damage inefficacy, with Cause commercial Application to be limited to, it is impossible to meet current miniaturization requirement.

Utility model content

The problems referred to above existed for prior art, the purpose of this utility model is to provide one can long-time steady operation Little Micro Turbine Jet Engine.

For achieving the above object, the technical solution adopted in the utility model is as follows:

A kind of little Micro Turbine Jet Engine, including turbine, compressor, rotating shaft, 2 journal bearings, 1 thrust bearing and Combustor, described turbine includes turbine, turbine air deflector and turbine cylinder, and described compressor includes pinch roller, compressor Diffuser and compressor housings；It is characterized in that: described journal bearing is hybrid kinetic pressure gas journal bearing, including bearing outside Set, bearing inner sleeve and the foil-type elastic component being arranged between bearing outside and inner sleeve；Described thrust bearing is hybrid action pneumatic Body thrust bearing, including two side panels and be folded in the mid-game between two side panels, is all provided with between each side panel and mid-game There is foil-type elastic component；Described combustor is set in the middle part of rotating shaft, and 2 journal bearings are respectively sleeved at and are positioned at turning of combustor On axle, described thrust bearing is set in the rotating shaft being positioned between combustor and pinch roller.

As further embodiment, described little Micro Turbine Jet Engine also include turbine support, compressor support, Rotating shaft set, bearing holder (housing, cover) and left bearing room end cap and right bearing room end cap, described rotating shaft set is set in rotating shaft, journal bearing and only Thrust bearing is all set in rotating shaft and puts, and described bearing holder (housing, cover) is set in the outside of journal bearing and thrust bearing；Turbine cylinder with Turbine support is fixing to be connected, and turbine support is fixing with the housing of combustor to be connected, turbine support and turbine air deflector Fixing connection, turbine air deflector is fixing with left bearing room end cap to be connected；Compressor housings is fixing with compressor support to be connected；Pressure Mechanism of qi support is fixing with the housing of combustor to be connected, and compressor support is fixing with compressor diffuser to be connected, compressor diffuser Fix with right bearing room end cap and be connected.

Preferably, the surface of described rotating shaft offers heat radiation helicla flute, is beneficial to the heat radiation of rotating shaft and bearing chamber.

Preferably, the outer circumference surface of described bearing inner sleeve and both ends of the surface are respectively provided with the slot type decorative pattern of regular shape.

As further preferred scheme, the slot type decorative pattern of the end face of described bearing inner sleeve and the slot type decorative pattern of other end Form specular, and the radial profile of the slot type decorative pattern of the axial profile line of the slot type decorative pattern of outer circumference surface and both ends of the surface It is respectively formed one_to_one corresponding and mutually joins.

As further preferred scheme, the axial high bit line and two in the slot type decorative pattern of the outer circumference surface of described bearing inner sleeve The high bit line of radial direction in the slot type decorative pattern of end face is homogeneously corresponding and mutually joins before end face peripheral chamfer；The groove of outer circumference surface Axial neutrality line in formula decorative pattern is the most corresponding with the radial direction neutrality line in the slot type decorative pattern of both ends of the surface and in end face peripheral chamfer Front mutually handing-over；Axial low-bit line in the slot type decorative pattern of outer circumference surface is equal with the radial direction low-bit line in the slot type decorative pattern of both ends of the surface Corresponding and mutually join before end face peripheral chamfer.

As further preferred scheme, on the cooperation face of the foil-type elastic component matched with the outer circumference surface of bearing inner sleeve It is provided with wear-resistant coating.

As further preferred scheme, the fit clearance of described foil-type elastic component and bearing inner sleeve be 0.003～ 0.008mm。

As further preferred scheme, the two ends of described foil-type elastic component are each attached to the inner peripheral wall of bearing outside On.

As further preferred scheme, described foil-type elastic component is multiple, and uniform along the inner peripheral wall of bearing outside Distribution.

As further preferred scheme, the inner peripheral wall at bearing outside is provided with the draw-in groove for fixing foil-type elastic component.

As further preferred scheme, it is provided with stop ring at the two ends of bearing outside.

Preferably, the excircle of described bearing outside has coaxial through hole and shrinkage pool, described through hole position In coaxial shrinkage pool, being beneficial to importing and the derivation of gas, on the one hand realize quick heat radiating aerofluxus, another side realizes bearing Indoor carry out air supply.

Preferably, the both ends of the surface of described mid-game are equipped with the slot type decorative pattern of regular shape, and the slot type of end face Decorative pattern forms specular with the slot type decorative pattern of other end.

Preferably, the outer circumference surface in described mid-game also is provided with slot type decorative pattern, and the slot type decorative pattern of outer circumference surface Shape identical with the shape of the slot type decorative pattern of both ends of the surface, and the axial profile line of the slot type decorative pattern of outer circumference surface and both ends of the surface The radial profile of slot type decorative pattern be respectively formed one_to_one corresponding and mutually join.

Groove as further preferred scheme, the axial high bit line in the slot type decorative pattern of the outer circumference surface of mid-game and both ends of the surface The high bit line of radial direction in formula decorative pattern is homogeneously corresponding and mutually joins before end face peripheral chamfer；In the slot type decorative pattern of outer circumference surface Axial neutrality line the most corresponding with the radial direction neutrality line in the slot type decorative pattern of both ends of the surface and mutually hand over before end face peripheral chamfer Connect；Axial low-bit line in the slot type decorative pattern of outer circumference surface is the most corresponding with the radial direction low-bit line in the slot type decorative pattern of both ends of the surface, And mutually join before end face peripheral chamfer.

As further preferred scheme, the cooperation face of the foil-type elastic component matched with mid-game is provided with wear-resistant coating.

As further preferred scheme, described foil-type elastic component is 0.003～0.008mm with the fit clearance of mid-game.

As further preferred scheme, at least one end of described foil-type elastic component is fixed on the inner face of corresponding side panel.

As further preferred scheme, the foil-type elastic component on each side panel is multiple, and uniform along the inner face of side panel Distribution.

As further preferred scheme, the foil-type elastic component being fixed on a side panel be fixed on another side panel Foil-type elastic component forms specular.

As further preferred scheme, the inner face at side panel is provided with the draw-in groove for fixing foil-type elastic component.

As a kind of embodiment, described foil-type elastic component is made up of ripple paper tinsel peace paper tinsel, the arc convex of described ripple paper tinsel Top fits with flat paper tinsel.

As another embodiment, described foil-type elastic component is made up of ripple paper tinsel peace paper tinsel, between the ripple arch of described ripple paper tinsel Transition base fits with flat paper tinsel.

As another embodiment, described foil-type elastic component is made up of two flat paper tinsels.

Above-mentioned slot type decorative pattern is impeller shape.

Above-mentioned foil-type elastic component is preferably through Surface heat-treatent.

Compared with prior art, this utility model has the advantages that

Because of turbojet engine provided by the utility model, it is the lubricant using gas as bearing, the most not only has Pollution-free, friction loss is low, use the plurality of advantages such as time length, applied widely, energy-conserving and environment-protective, and uses described structure, Good heat dissipation effect, it is ensured that long-time steady operation；Especially, can realize under air supporting state because of the air bearing of described structure Ultrahigh speed steady running (after tested, up to 100,000～450, the limit speed of 000rpm), therefore for equal-wattage want Asking, this utility model can make the volume of turbojet engine be substantially reduced realization miniaturization, have take up room little, easy to use etc. Advantage, the development to promoting miniaturization new and high technology has important value, has significance progress relative to prior art.

Accompanying drawing explanation

Fig. 1 is the cross-sectional view of a kind of little Micro Turbine Jet Engine that embodiment 1 provides；

Fig. 2 is the left view stereochemical structure signal of the local segmentation of the hybrid kinetic pressure gas journal bearing that embodiment 1 provides Figure；

Fig. 3 is the A partial enlarged drawing in Fig. 2；

Fig. 4 is that the right side of the local segmentation of the hybrid kinetic pressure gas journal bearing that embodiment 1 provides regards stereochemical structure signal Figure；

Fig. 5 is the B partial enlarged drawing in Fig. 4；

Fig. 6 is the cross-sectional view of the hybrid kinetic pressure gas journal bearing that embodiment 1 provides；

Fig. 7 is the C partial enlarged drawing in Fig. 6；

Fig. 8 is the D partial enlarged drawing in Fig. 7；

Fig. 9 is the cross-sectional view of the hybrid kinetic pressure gas thrust bearing that embodiment 1 provides；

Figure 10 a is the left view of mid-game described in embodiment 1；

Figure 10 b is the right view of mid-game described in embodiment 1；

Figure 11 a is the right view of the left hand plate being fixed with foil-type elastic component described in embodiment 1；

Figure 11 b is the left view of the right side dish being fixed with foil-type elastic component described in embodiment 1；

Figure 12 is the cross section structure schematic diagram of the foil-type elastic component that embodiment 1 provides；

Figure 13 is the perspective view of the foil-type elastic component that embodiment 1 provides；

Figure 14 is the cross-sectional view of a kind of hybrid kinetic pressure gas journal bearing that embodiment 2 provides；

Figure 15 is the structural representation of Figure 14 medium wave paper tinsel；

Figure 16 is the cross-sectional view of a kind of hybrid kinetic pressure gas journal bearing that embodiment 3 provides；

Figure 17 is the cross-sectional view of a kind of hybrid kinetic pressure gas journal bearing that embodiment 4 provides；

Figure 18 a is the left view perspective view of a kind of hybrid kinetic pressure gas thrust bearing that embodiment 5 provides；

Figure 18 b is that the right side of the hybrid kinetic pressure gas thrust bearing that embodiment 5 provides regards perspective view；

Figure 19 is the local segmentation perspective view of the hybrid kinetic pressure gas thrust bearing that embodiment 5 provides；

Figure 20 is the left view perspective view of mid-game described in embodiment 5；

Figure 21 is the E partial enlarged drawing in Figure 20；

Figure 22 is that the right side of mid-game described in embodiment 5 regards perspective view；

Figure 23 is the F partial enlarged drawing in Figure 22；

Figure 24 is the pivot structure schematic diagram that embodiment 6 is provided；

Figure 25 is the G partial enlarged drawing in Figure 24.

In figure, label is schematically as follows:

1, turbine；11, turbine；12, turbine air deflector；13, turbine cylinder；14, turbine support；2, calm the anger Machine；21, pinch roller；22, compressor diffuser；23, compressor housings；24, compressor support；3, rotating shaft；31, rotating shaft set；32, dissipate Hot helicla flute；4, hybrid kinetic pressure gas journal bearing；4a, left end journal bearing；4b, right-hand member journal bearing；41, outside bearing Set；411, draw-in groove；412, through hole；413, shrinkage pool；42, bearing inner sleeve；43, slot type decorative pattern；431, the slot type decorative pattern of outer circumference surface； 4311, axial high bit line；4312, axial neutrality line；4313, axial low-bit line；432, the slot type decorative pattern of left side；4321, footpath To high bit line；4322, radially neutrality line；4323, radially low-bit line；433, the slot type decorative pattern of right side；4331, the most high-order Line；4332, radially neutrality line；4333, radially low-bit line；44, stop ring；45, foil-type elastic component；451, ripple paper tinsel；4511, arc is convex Rise；4512, transition base between ripple arch；452, flat paper tinsel；453, wear-resistant coating；5, hybrid kinetic pressure gas thrust bearing；51, side Dish；511, left hand plate；512, right side dish；513, draw-in groove；52, mid-game；521, the slot type decorative pattern of left side；5211, the most high-order Line；5212, radially neutrality line；5213, radially low-bit line；522, the slot type decorative pattern of right side；5221, the highest bit line；5222、 Radially neutrality line；5223, radially low-bit line；523, the slot type decorative pattern of outer circumference surface；5231, axial high bit line；5232, in axially Bit line；5233, axial low-bit line；53, foil-type elastic component；53a, the foil-type elastic component being fixed in left hand plate；53b, it is fixed on Foil-type elastic component on the dish of right side；531, ripple paper tinsel；5311, arc convex；5312, transition base between ripple arch；532, flat paper tinsel；6, combustion Burn room；61, the housing of combustor；7, bearing holder (housing, cover)；8a, left bearing room end cap；8b, right bearing room end cap.

Detailed description of the invention

Below in conjunction with the accompanying drawings and the technical solution of the utility model is described in detail by embodiment.

Embodiment 1

As shown in Figure 1: the little Micro Turbine Jet Engine of one that the present embodiment provides, including turbine 1, compressor 2, rotating shaft 3,4,1 thrust bearing 5 of 2 journal bearings and combustor 6, described turbine 1 includes turbine 11, turbine air deflector 12 and whirlpool Turbine housing 13, described compressor 2 includes pinch roller 21, compressor diffuser 22 and compressor housings 23；It is characterized in that: described Journal bearing 4 is hybrid kinetic pressure gas journal bearing, including bearing outside 41 and bearing inner sleeve 42；Described thrust bearing 5 is Hybrid kinetic pressure gas thrust bearing, including two side panels 51 and the mid-game 52 that is folded between two side panels, in each side Foil-type elastic component 53 it is equipped with between dish 51 and mid-game 52；Described combustor 6 is set in the middle part of rotating shaft 3,2 journal bearings 4 Be respectively sleeved in the rotating shaft 3 being positioned at combustor 6, described thrust bearing 5 be set in be positioned between combustor 6 and pinch roller 21 turn On axle 3.

Described little Micro Turbine Jet Engine also includes turbine support 14, compressor support 24, rotating shaft set 31, bearing holder (housing, cover) 7 and left bearing room end cap 8a and right bearing room end cap 8b, described rotating shaft set 31 is set in rotating shaft 3, journal bearing 4 and thrust shaft Holding 5 to be all set on rotating shaft set 31, described bearing holder (housing, cover) 7 is set in journal bearing 4 and the outside of thrust bearing 5；Turbine cylinder 13 fixing with turbine support 14 are connected, and turbine support 14 is fixed with the housing 61 of combustor 6 and is connected, turbine support 14 and Turbine air deflector 12 is fixing to be connected, and turbine air deflector 12 is fixing with left bearing room end cap 8a to be connected；Compressor housings 23 with Compressor support 24 is fixing to be connected；The housing 61 of compressor support 24 and combustor 6 is fixing to be connected, compressor support 24 with calm the anger Machine diffuser 22 is fixing to be connected, and compressor diffuser 22 is fixing with right bearing room end cap 8b to be connected.

In conjunction with shown in Fig. 2 to Fig. 5: outer circumference surface and the left and right end face of described bearing inner sleeve 42 are respectively provided with regular shape Slot type decorative pattern 43 (such as 431 in figure, 432 and 433, the slot type decorative pattern in the present embodiment is impeller shape), and left side Slot type decorative pattern 432 forms specular with the slot type decorative pattern 433 of right side.It is positioned at the slot type flower of the outer circumference surface of bearing inner sleeve 42 The axial profile line of stricture of vagina 431 is respectively formed one_to_one corresponding also with the radial profile of the slot type decorative pattern (432 and 433) of left and right end face Mutually handing-over, it may be assumed that the axial high bit line 4311 in the slot type decorative pattern 431 of outer circumference surface and the slot type decorative pattern (432 of left and right end face With 433) in the high bit line of radial direction (4321 and 4331) the most corresponding and mutually join before end face peripheral chamfer；Outer circumference surface Slot type decorative pattern 431 in axial neutrality line 4312 and the radial direction neutrality line in the slot type decorative pattern (432 and 433) of left and right end face (4322 and 4332) are the most corresponding and mutually join before end face peripheral chamfer；Axial in the slot type decorative pattern 431 of outer circumference surface Low-bit line 4313 is the most corresponding with the radial direction low-bit line (4323 and 4333) in the slot type decorative pattern of left and right end face (432 and 433), And mutually join before end face peripheral chamfer.

Slot type decorative pattern (431,432 and of regular shape it are respectively provided with by the outer circumference surface and both ends of the surface making bearing inner sleeve 42 433), the slot type decorative pattern 432 of left side and the slot type decorative pattern 433 of right side form the slot type decorative pattern of specular and outer circumference surface The axial profile line of 431 is respectively formed one_to_one corresponding phase with the radial profile of the slot type decorative pattern (432 and 433) of left and right end face Handing-over mutually, it is ensured that produced by the slot type decorative pattern (432 and 433) of the impeller shape of both ends of the surface, pressurization gas is from axle center radially Carrying in the recess channels constantly formed toward the slot type decorative pattern 431 of outer circumference surface, running up axle so that forming higher support Hold required air film, and air film is i.e. as the lubricant of kinetic pressure gas journal bearing, be thus advantageous to realize described hybrid dynamic The pressure gas lubricated journal bearing 4 high speed steady running under air supporting state.

It addition, when being respectively provided with stop ring 44 at the two ends of bearing outside 41, may be implemented under the drive of high speed gyroaxis, Making to be produced from sealing function between the both ends of the surface of bearing inner sleeve 42 and stop ring 44, the action pneumatic physical ability making slot type decorative pattern continuously generate is complete Well in the airtight whole fit clearance being saved in bearing, fully ensure that the lubrication of the kinetic pressure gas journal bearing run up needs Want.

Shown in Fig. 6 and Fig. 7: described foil-type elastic component 45 is arranged between bearing outside 41 and inner sleeve 42, is to adopt Forming with ripple paper tinsel 451 peace paper tinsel 452, the top of the arc convex 4511 of described ripple paper tinsel 451 fits with flat paper tinsel 452, described ripple Between the ripple arch of paper tinsel 451, transition base 4512 fits with the inner peripheral wall of bearing outside 41.Inner peripheral wall at bearing outside 41 Being provided with the draw-in groove 411 for fixing foil-type elastic component 45 two ends, described draw-in groove 411 is corresponding with the quantity of foil-type elastic component 45, And all inner peripheral walls along bearing outside 41 are uniformly distributed.

As shown in Figure 8: at cooperation face (that is: the structure of the foil-type elastic component 45 matched with the outer circumference surface of bearing inner sleeve 42 Become the inner surface of the flat paper tinsel 452 of foil-type elastic component 45) it is provided with wear-resistant coating 453, the bearing run up with further reduction The inner sleeve 42 abrasion to foil-type elastic component 45, extends the service life of bearing.

Described foil-type elastic component 45 is preferably 0.003～0.008mm, with further with the fit clearance of bearing inner sleeve 42 Guarantee the reliability and stability that bearing runs up.

As shown in Figure 9: the hybrid kinetic pressure gas thrust bearing of one 5 that the present embodiment provides, including: two side panels 51, Between two side panels 51, it is folded with mid-game 52, between each side panel 51 and mid-game 52, is provided with foil-type elastic component 53；In described The left side of dish 52 is provided with the slot type decorative pattern 521 of regular shape, and right side is provided with the slot type decorative pattern 522 of regular shape.

Visible in conjunction with Figure 10 a and Figure 10 b: the slot type decorative pattern 521 of the left side of described mid-game 52 is spent with the slot type of right side Specular, the radial profile of the slot type decorative pattern 521 of left side and the slot type decorative pattern 522 of right side is formed between stricture of vagina 522 Radial profile forms one_to_one corresponding.

Described slot type decorative pattern 521 is identical with the shape of 522, is impeller shape in the present embodiment.

Visible further combined with Figure 11 a and Figure 11 b: described foil-type elastic component 53 is fixed on the inner face of corresponding side panel 51 (shown in the left hand plate 511 and Figure 11 b being fixed with foil-type elastic component 53a shown in such as Figure 11 a, it is fixed with foil-type elastic component The right side dish 512 of 53b), and the foil-type elastic component 53a being fixed in left hand plate 511 and be fixed on right side dish 512 on foil-type bullet Property part 53b formed specular.Foil-type elastic component on each side panel can be multiple (shown in figure are 4), and along side The inner face of dish is uniformly distributed.

By arranging foil-type elastic component 53 between side panel 51 and mid-game 52, the left and right end face in mid-game 52 arranges rule The slot type decorative pattern (521 and 522) of shape, and make the slot type decorative pattern 521 of left side form mirror image with the slot type decorative pattern 522 of right side Symmetry, thus obtained the rigidity characteristic of the high limit rotating speed not only with slot type kinetic pressure gas thrust bearing, but also there is paillon foil formula The high impact-resistance of kinetic pressure gas thrust bearing and the hybrid kinetic pressure gas thrust bearing of the flexible characteristic of load-carrying ability；Cause For defining wedge shape space between foil-type elastic component 53 and mid-game 52, when mid-game 52 rotates, gas is because of the viscous effect of himself It is driven and is compressed in wedge shape space, thus axial hydrodynamic power can be made to been significantly enhanced, relative to existing simple paper tinsel Chip kinetic pressure gas thrust bearing, can have the limit speed being multiplied under same load；Simultaneously as add foil-type Elastic component 53, under its elastic reaction, the ability that also can make the load-carrying ability of bearing, impact resistance and suppression axle whirling motion is notable Improve, relative to existing simple slot type kinetic pressure gas thrust bearing, can have the shock resistance being multiplied under same rotational speed Ability and load-carrying ability.

For reducing the mid-game 52 the run up abrasion to foil-type elastic component 53 further, to extend the use longevity of bearing Life, preferably arranges wear-resistant coating (not shown) on the cooperation face of the foil-type elastic component 53 matched with mid-game 52.

As shown in Figure 12 and Figure 13: the foil-type elastic component 45/53 described in the present embodiment is by ripple paper tinsel 451/531 peace paper tinsel 452/532 composition, the top of the arc convex 4511/5311 of described ripple paper tinsel 451/531 fits with flat paper tinsel 452/532.

Embodiment 2

As shown in figure 14, the foil-type elastic component 45 described in the present embodiment is made up of ripple paper tinsel 451 peace paper tinsel 452, described ripple paper tinsel The top of the arc convex 4511 of 451 fits with the inner peripheral wall of bearing outside 41, between the ripple arch of described ripple paper tinsel 451 at the bottom of transition Limit 4512 fits with flat paper tinsel 452.

Figure 15 show the structural representation of described ripple paper tinsel 451.

Embodiment 3

As shown in figure 16, the foil-type elastic component 45 described in the present embodiment is made up of two flat paper tinsels 452.

Embodiment 4

As shown in figure 17, a kind of slot type kinetic pressure gas journal bearing that the present embodiment provides only exists with the difference of embodiment 1 In: having coaxial through hole 411 and shrinkage pool 412 on the excircle of described bearing outside 41, described through hole 411 is positioned at coaxial In shrinkage pool 412, being beneficial to importing and the derivation of gas, on the one hand realize quick heat radiating aerofluxus, another side realizes bearing indoor Carry out air supply.

Embodiment 5

In conjunction with Figure 18 a, 18b, shown in 19 to 23 visible, the hybrid kinetic pressure gas thrust bearing of one that the present embodiment provides With differing only in of embodiment 1:

Outer circumference surface in described mid-game 52 also is provided with slot type decorative pattern 523, and the shape of the slot type decorative pattern 523 of outer circumference surface Identical with the shape of the slot type decorative pattern of left and right end face (521 and 522) (in the present embodiment, being impeller shape), and excircle The axial profile line of the slot type decorative pattern 523 in face is respectively formed with the radial profile of the slot type decorative pattern (521 and 522) of left and right end face One_to_one corresponding also mutually joins；That is:

Axial high bit line 5231 in the slot type decorative pattern 523 of outer circumference surface and the radial direction in the slot type decorative pattern 521 of left side High bit line 5211 is the most corresponding and mutually joins before end face peripheral chamfer；In axial direction in the slot type decorative pattern 523 of outer circumference surface Bit line 5232 the most corresponding with the radial direction neutrality line 5212 in the slot type decorative pattern 521 of left side and before end face peripheral chamfer phase Handing-over mutually；Axial low-bit line 5233 in the slot type decorative pattern 523 of outer circumference surface is low with the radial direction in the slot type decorative pattern 521 of left side Bit line 5213 is the most corresponding and mutually joins (as shown in figure 21) before end face peripheral chamfer；

Axial high bit line 5231 in the slot type decorative pattern 523 of outer circumference surface and the radial direction in the slot type decorative pattern 522 of right side High bit line 5221 is the most corresponding and mutually joins before end face peripheral chamfer；In axial direction in the slot type decorative pattern 523 of outer circumference surface Bit line 5232 the most corresponding with the radial direction neutrality line 5222 in the slot type decorative pattern 522 of right side and before end face peripheral chamfer phase Handing-over mutually；Axial low-bit line 5233 in the slot type decorative pattern 523 of outer circumference surface is low with the radial direction in the slot type decorative pattern 522 of right side Bit line 5223 is the most corresponding and mutually joins (as shown in figure 23) before end face peripheral chamfer.

When the outer circumference surface in described mid-game 52 also is provided with slot type decorative pattern, and make the shape of the slot type decorative pattern 523 of outer circumference surface Shape is identical with the shape of the slot type decorative pattern of left and right end face (521 and 522), and the axial wheel of the slot type decorative pattern 523 of outer circumference surface When the radial profile of the slot type decorative pattern (521 and 522) of profile and left and right end face is respectively formed one_to_one corresponding and mutually joins, can Make pressurization gas produced by the slot type decorative pattern (521 and 522) of inner disc both ends of the surface from axle center the most constantly toward outer circumference surface The recess channels that formed of slot type decorative pattern 523 in carry run up the air film needed for bearing so that forming higher support, and gas Film is i.e. as the lubricant of kinetic pressure gas thrust bearing, thus can be further assured that described hybrid kinetic pressure gas thrust bearing High speed steady running under air supporting state, is further ensured that for realizing the high limit rotating speed offer of motor.

The inner face of side panel 51 is provided with the draw-in groove 513 (as shown in figure 20) for fixing foil-type elastic component 53.

Described foil-type elastic component 53 is preferably 0.003～0.008mm, to further ensure that with the fit clearance of mid-game 52 The reliability and stability that bearing runs up.

In order to preferably meet the performance requirement that runs up, described foil-type elastic component 53 preferably through surface heat at Reason.

It is further to note that: the composition structure of foil-type elastic component 53 described in the utility model is not limited to above-mentioned enforcement Described in example, it is also possible to use ripple paper tinsel peace paper tinsel composition, but between the ripple of described ripple paper tinsel arch, transition base fits with flat paper tinsel, or Person, directly uses two flat paper tinsel compositions, or uses other existing structure.

Embodiment 6

Shown in Figure 24 and Figure 25: offer heat radiation helicla flute 32 on the surface of rotating shaft 3, be beneficial to rotating shaft and bearing chamber Heat radiation.

After tested, the bearing that this utility model provides can reach 100,000～450 under air supporting state, the pole of 000rpm Limit rotating speed, therefore for equal-wattage requirement, this utility model can make the volume of turbojet engine be substantially reduced realization miniaturization, Development to promoting miniaturization new and high technology has important value.

Finally be necessary it is pointed out here that: above content is served only for doing technical scheme described in the utility model further Describe in detail, it is impossible to being interpreted as the restriction to this utility model protection domain, those skilled in the art is according to this utility model Some nonessential improvement of making of foregoing and adjustment belong to protection domain of the present utility model.

Claims

1. a little Micro Turbine Jet Engine, including turbine, compressor, rotating shaft, 2 journal bearings, 1 thrust bearing and combustion Burning room, described turbine includes turbine, turbine air deflector and turbine cylinder, and described compressor includes that pinch roller, compressor expand Depressor and compressor housings；It is characterized in that: described journal bearing is hybrid kinetic pressure gas journal bearing, including bearing outside Set, bearing inner sleeve and the foil-type elastic component being arranged between bearing outside and inner sleeve；Described thrust bearing is hybrid action pneumatic Body thrust bearing, including two side panels and be folded in the mid-game between two side panels, is all provided with between each side panel and mid-game There is foil-type elastic component；Described combustor is set in the middle part of rotating shaft, and 2 journal bearings are respectively sleeved at and are positioned at turning of combustor On axle, described thrust bearing is set in the rotating shaft being positioned between combustor and pinch roller.

Little Micro Turbine Jet Engine the most according to claim 1, it is characterised in that: described little Micro Turbine Jet Engine is also Including turbine support, compressor support, rotating shaft set, bearing holder (housing, cover) and left bearing room end cap and right bearing room end cap, described rotating shaft Being set in rotating shaft, journal bearing and thrust bearing are all set in rotating shaft and put, described bearing holder (housing, cover) be set in journal bearing and The outside of thrust bearing；Turbine cylinder is fixing with turbine support to be connected, and turbine support is fixing with the housing of combustor to be connected Connecing, turbine support is fixing with turbine air deflector to be connected, and turbine air deflector is fixing with left bearing room end cap to be connected；Compressor Housing is fixing with compressor support to be connected；Compressor support is fixing with the housing of combustor to be connected, compressor support and compressor Diffuser is fixing to be connected, and compressor diffuser is fixing with right bearing room end cap to be connected.

Little Micro Turbine Jet Engine the most according to claim 1 and 2, it is characterised in that: the surface of described rotating shaft offers Heat radiation helicla flute.

Little Micro Turbine Jet Engine the most according to claim 1, it is characterised in that: the outer circumference surface of described bearing inner sleeve and Both ends of the surface are respectively provided with the slot type decorative pattern of regular shape.

Little Micro Turbine Jet Engine the most according to claim 4, it is characterised in that: the groove of the end face of described bearing inner sleeve Formula decorative pattern forms specular, and the axial profile line and two of the slot type decorative pattern of outer circumference surface with the slot type decorative pattern of other end The radial profile of the slot type decorative pattern of end face is respectively formed one_to_one corresponding and mutually joins.

Little Micro Turbine Jet Engine the most according to claim 5, it is characterised in that: the outer circumference surface of described bearing inner sleeve Axial high bit line bit line high with the radial direction in the slot type decorative pattern of both ends of the surface in slot type decorative pattern is the most corresponding and falls at end face circumference Mutually join before angle；Axial neutrality line in the slot type decorative pattern of outer circumference surface and the radial direction neutrality line in the slot type decorative pattern of both ends of the surface The most corresponding and mutually join before end face peripheral chamfer；Axial low-bit line in the slot type decorative pattern of outer circumference surface and both ends of the surface Slot type decorative pattern in radial direction low-bit line the most corresponding and mutually join before end face peripheral chamfer.

Little Micro Turbine Jet Engine the most according to claim 1, it is characterised in that: have on the excircle of described bearing outside Coaxial through hole and shrinkage pool, described through hole is had to be positioned at coaxial shrinkage pool.

Little Micro Turbine Jet Engine the most according to claim 1, it is characterised in that: the both ends of the surface of described mid-game are equipped with rule The slot type decorative pattern of the then slot type decorative pattern of shape, and end face forms specular with the slot type decorative pattern of other end.

Little Micro Turbine Jet Engine the most according to claim 8, it is characterised in that: the outer circumference surface in described mid-game also sets There is slot type decorative pattern, and the shape of the slot type decorative pattern of outer circumference surface is identical with the shape of the slot type decorative pattern of both ends of the surface, and excircle The axial profile line of the slot type decorative pattern in face is respectively formed one_to_one corresponding with the radial profile of the slot type decorative pattern of both ends of the surface and mutually hands over Connect.

Little Micro Turbine Jet Engine the most according to claim 9, it is characterised in that: the slot type flower of the outer circumference surface of mid-game Axial high bit line bit line high with the radial direction in the slot type decorative pattern of both ends of the surface in stricture of vagina the most corresponding and before end face peripheral chamfer phase Handing-over mutually；Axial neutrality line in the slot type decorative pattern of outer circumference surface is the most relative with the radial direction neutrality line in the slot type decorative pattern of both ends of the surface Should and mutually join before end face peripheral chamfer；Axial low-bit line in the slot type decorative pattern of outer circumference surface and the slot type of both ends of the surface Radial direction low-bit line in decorative pattern is the most corresponding and mutually joins before end face peripheral chamfer.

11. little Micro Turbine Jet Engine according to claim 1, it is characterised in that: it is fixed on the foil-type on a side panel Elastic component forms specular with the foil-type elastic component being fixed on another side panel.

12. according to the little Micro Turbine Jet Engine described in claim 1 or 11, it is characterised in that: described foil-type elastic component by Ripple paper tinsel peace paper tinsel forms, and the arc convex top of described ripple paper tinsel fits with flat paper tinsel.

13. according to the little Micro Turbine Jet Engine described in claim 1 or 11, it is characterised in that: described foil-type elastic component by Ripple paper tinsel peace paper tinsel forms, and between the ripple arch of described ripple paper tinsel, transition base fits with flat paper tinsel.

14. according to the little Micro Turbine Jet Engine described in claim 1 or 11, it is characterised in that: described foil-type elastic component by Two flat paper tinsel compositions.