CN204041133U

CN204041133U - Ball-bearing turbocharger

Info

Publication number: CN204041133U
Application number: CN201420505191.2U
Authority: CN
Inventors: 薛冰
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-09-04
Filing date: 2014-09-04
Publication date: 2014-12-24
Anticipated expiration: 2024-09-04

Abstract

A kind of ball-bearing turbocharger, comprise turbine case, intermediate, impeller housing, bearing block assembly, rotor shaft, its technological points is: described bearing block assembly comprises bearing support I, II of matching, some ball bearings, the external member I matched, II, floating ring and support ring I, II; Support ring I is fixed on intermediate, and bearing support II to be socketed on bearing support I and spacing by support ring I, and ball bearing is spacing between bearing support I, II, and ball bearing outer ring is supported by bearing support I; Floating ring by turbine rotor or vane rotor spacing, external member I is positioned at outside floating ring, and external member II is spacing on floating ring, relative sliding can occur between external member I, II, the spacing support ring II had for back-up roller pearl bearing inner race between external member II and ball bearing.Fundamentally solve the problems such as the loss of existing turbo power is large, oil consumption is high, working life is short.

Description

Ball-bearing turbocharger

Technical field

The utility model relates to technical field of internal combustion engines, particularly relates to provide the motor that at least portion of time is feature by exhaust-driven pump, specifically a kind of ball-bearing turbocharger.

Background technique

Turbosupercharger is actually a kind of air compressor, increases air inflow by pressurized air.It is utilize motor to discharge waste gas inertia impulsive force to promote the turbine in turbine chamber, turbine drives again coaxial impeller, the air that impeller force feed is sent here by air-strainer pipeline, makes it supercharging and enters cylinder.When engine speed speeds, the waste gas velocity of discharge and secondary speed also synchronously speed, and impeller just compresses more air and enters cylinder, and the pressure of air and density increase the more fuel that can burn, the rotating speed of corresponding increase fuel quantity and adjustment motor, just can increase the output power of motor.In prior art, automobile turbocharger bearing used is commonly ball bearing and floating bearing (wherein in the majority with floating bearing), but these two kinds of bearings all also exist very important shortcoming.In use, the high speed steel pollutant caused that weares and teares all can cause wearing and tearing to steel ball itself and bearing internal external raceway to ball bearing, affects its working life.Ball bearing limits due to material, high to lubricating oil requirements used, and poor durability, seizure resistance is also poor.Power loss is larger.

Model utility content

The purpose of this utility model is to provide a kind of ball-bearing turbocharger, fundamentally solves the problems such as the loss of existing turbo power is large, oil consumption is high, working life is short.Its smart structural design, has the advantages such as power loss in running is little, bearing oil mass is few, required oily flow rate is low, lubricating condition is less demanding, bearing working reliability is high, the startup rear blunt short time reaches efficient working state, bearing speed is fast.

The purpose of this utility model is achieved in that this ball-bearing turbocharger comprises turbine case, intermediate, impeller housing, bearing block assembly, rotor shaft, intermediate is provided with oilhole, rotor shaft runs through turbine case, intermediate, impeller housing spacing by bearing block assembly successively, its technological points is: described bearing block assembly comprises bearing support I, II of matching, some ball bearings, the external member I matched, II, floating ring and support ring I, II; Support ring I is fixed on intermediate, and bearing support II to be socketed on bearing support I and spacing by support ring I, and ball bearing is spacing between bearing support I, II, and ball bearing outer ring is supported by bearing support I; Floating ring by turbine rotor or vane rotor spacing, external member I is positioned at outside floating ring, and external member II is spacing on floating ring, relative sliding can occur between external member I, II, the spacing support ring II had for back-up roller pearl bearing inner race between external member II and ball bearing.

Described rotor shaft is also provided with limited ring.

By the spacing turbine case supporting element of turbine rotor between described turbine case and intermediate.

Impeller housing supporting element I, II, III are installed between described impeller housing and intermediate successively.

The advantage that the utility model has and positive technique effect are: turbosupercharger one-piece element modularization, are convenient to installation and maintenance.Spielpassung between each parts, when reducing intermediate temperature, wear rate reduces, and rotating speed improves.Floating ring by turbine rotor or vane rotor spacing, can fluctuate with rotor shaft, external member I adopt arcuate structure effectively can improve buffer capacity, can relative sliding be there is between external member I, II, improve stable and safe in operation.Some ball bearings are between bearing support I, II of cooperation, adopt many ball bearings form, extend working life, sensitivity is higher, and between two ball bearing internal diameters and turbine rotor shaft, therefore machine is highly sensitive, and rotating speed is faster, improve the speed of bearing, and then improve pressurized machine high speed performance.Ball bearing seizure resistance is strong, and required oily flow rate is only 50% of floating bearing, 20% of ball bearing, reduces bearing lubrication condition, improves Young's modulus, reduce power loss.Ball bearing has no special requirements to the temperature of lubricant oil, pressure, the lubricating condition such as lubricating property and filtering character.By reusing lubricant oil and being proved by the machine oil that High Speed Steel Powders polluted, the durability of ball bearing is far beyond floating bearing.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the utility model is further described.

Fig. 1 is sectional structure schematic diagram of the present utility model;

Fig. 2 is the partial enlargement structural representation of Fig. 1.

Description of reference numerals: 1 turbine case, 2 turbine case supporting elements, 3 intermediates, 4 impeller housing, 5 impeller housing supporting element I, 6 impeller housing supporting element II, 7 nuts, 8 vane rotors, 9 impeller housing supporting element III, 10 seal rings, 11 rotor shafts, 12 turbine rotors, 13 limited rings, 14 bearing support I, 15 external member I, 16 floating rings, 17 packing rings, 18 external member II, 19 support ring I, 20 bearing support II, 21 ball bearings, 22 support ring II, 23 oilholes.

Embodiment

Concrete structure of the present utility model is described in detail according to Fig. 1 ~ 2.This ball-bearing turbocharger comprises turbine case 1, intermediate 3 and the impeller housing 4 of installing successively.By the spacing turbine case supporting element 2 of turbine rotor 12 between turbine case 1 and intermediate 3, and by being positioned at screw outside turbine case 1 and pad is fixed.Impeller housing supporting element I, II, III 5,6,9 is installed between impeller housing 4 and intermediate 3 successively, supporting element I 5 directly embeds in impeller housing 4, supporting element II 6 embeds after supporting element I 5 compresses by impeller housing 4 and is fixed on impeller housing 4 by the screw be positioned at outside supporting element II 6, supporting element III 9 is positioned at supporting element II 6 top and is fixed by screws on intermediate 3, fixes spacing for above-mentioned parts finally by the screw be positioned at outside impeller housing 4 and pad.Seal ring 10 is equipped with between impeller housing 4 and intermediate 3, between supporting element II 5 and supporting element III 9, between supporting element III 9 and intermediate 3.Rotor shaft 11 runs through intermediate 3, installs turbine rotor 12 and vane rotor 8 in turbine case 1 and impeller housing 4 respectively, and vane rotor 8 is fixed by nut 7.Rotor shaft 11 is spacing by spacing bearing block assembly on centre, and bearing block assembly can be arranged on impeller end or turbine end, and the present embodiment illustrates its structure for impeller end.Bearing block assembly comprises bearing support I, the II 14,20 matched, some ball bearing 21(the present embodiment are for two ball bearings), the external member I matched, II 15,18, floating ring 16 and be provided with packing ring 17 between support ring I, II 19,22, external member I, II 15,18; Support ring I 19 is fixed by screws on intermediate 3, bearing support II 20 to be socketed on bearing support I 14 and spacing by support ring I 19, bearing support I, II 14,20 is fixed by the screw of bottom, ball bearing is spacing between bearing support I, II 14,20, and ball bearing outer ring is supported by bearing support I 14; Floating ring 16 by turbine rotor 12 or vane rotor 8 spacing, external member I 15 is positioned at outside floating ring 16, external member II 18 is spacing on floating ring 16, relative sliding can be there is between external member I, II 15,18, the spacing support ring II 22 had for back-up roller pearl bearing inner race between external member II 18 and ball bearing, rotor shaft 11 turbine end is also provided with limited ring 13, and limited ring 13 is fixed by screw and intermediate 3.Seal ring 10 is equipped with between external member I 15 and intermediate 3, between external member I 15 and external member II 18.Intermediate 3 is provided with oilhole 23, has time and is connected with limited ring 13, bearing block assembly.

Claims

1. a ball-bearing turbocharger, comprise turbine case, intermediate, impeller housing, bearing block assembly, rotor shaft, intermediate is provided with oilhole, rotor shaft runs through turbine case, intermediate, impeller housing spacing by bearing block assembly successively, it is characterized in that: described bearing block assembly comprises bearing support I, II of matching, some ball bearings, the external member I matched, II, floating ring and support ring I, II; Support ring I is fixed on intermediate, and bearing support II to be socketed on bearing support I and spacing by support ring I, and ball bearing is spacing between bearing support I, II, and ball bearing outer ring is supported by bearing support I; Floating ring by turbine rotor or vane rotor spacing, external member I is positioned at outside floating ring, and external member II is spacing on floating ring, relative sliding can occur between external member I, II, the spacing support ring II had for back-up roller pearl bearing inner race between external member II and ball bearing.

2. ball-bearing turbocharger according to claim 1, is characterized in that: described rotor shaft is also provided with limited ring.

3. ball-bearing turbocharger according to claim 1 and 2, is characterized in that: by the spacing turbine case supporting element of turbine rotor between described turbine case and intermediate.

4. ball-bearing turbocharger according to claim 3, is characterized in that: install impeller housing supporting element I, II, III between described impeller housing and intermediate successively.