CN2793332Y

CN2793332Y - Turbine booster

Info

Publication number: CN2793332Y
Application number: CN 200520033262
Authority: CN
Inventors: 邓祥明
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-02-17
Filing date: 2005-02-17
Publication date: 2006-07-05
Anticipated expiration: 2015-02-17

Abstract

The utility model discloses a turbocharger which comprises a rotating shaft, a middle casing provided with a lubricating oil passage and a bearing seat, a turbine and an air compressor wheel which are respectively fixed at both ends of the rotating shaft, a turbine shell and an air compressor shell which are matched with the turbine and the air compressor wheel and are connected with the middle casing, a floating bearing which is assembled on the rotating shaft and is provided with a plurality of lubricating oil holes, a sealing seat which is assembled on the rotating shaft, abutted to the inner side of the air compressor wheel and is provided with a sealing ring, and an air compressor dorsal disk which is matched with the sealing seat to seal lubricating oil, wherein an annular oil groove is arranged on the bearing seat of the middle casing and in the place corresponding to the position of the lubricating oil holes on the floating bearing; the exicrcle surface of the sealing seat adjacent to the air compressor dorsal disk is provided with a section of oil return threads. The turbocharger of the utility model is used for effectively solving the problems that the floating bearing is worn on the rotating shaft and the lubricating oil is leaked from the end of the air compressor wheel.

Description

A kind of turbosupercharger

Technical field

The utility model relates to a kind of turbosupercharger of motor car engine being carried out supercharging.

Background technique

At present, be widely used in the turbosupercharger on the automobile, as shown in Figure 1, in use all there are two problems in the auspicious special pressurized machine of lid as famous Honeywell (Honeywell) company: the one, be assembled in the wearing and tearing of the floating bearing 16 in the rotating shaft 1; The 2nd, lubricant oil is from the leakage of air compressor wheel end.The wearing and tearing of the floating bearing 16 in the rotating shaft 1 are owing to a floating bearing 16 respectively is equipped with in the inboard of turbine in rotating shaft 1 and air compressor wheel, lubricant oil filler opening on the common more close middle casing 11 of one of them floating bearing, though there is filtrating equipment at the place at filler opening, but be subjected to the influence of environment and pavement behavior, still have impurity and enter grease channel, these impurity are heavier, under the effect of airborne dust effect, enter easily between nearer floating bearing 16 of lubricant oil filler opening and bearing support and the gap between floating bearing 16 and the rotating shaft 1, when work, can cause the wearing and tearing of floating bearing 16, and after floating bearing 16 wearing and tearing, gap between floating bearing 16 and the bearing support is strengthened, it is big that the circular runout of floating bearing 16 becomes, and do not have other parts again and restrict it and beat the wearing and tearing of easier quickening floating bearing 16, so form vicious circle, cause floating bearing 16 to be scrapped very soon; The leakage of lubricant oil is because the high speed rotating of air compressor wheel, change scooter several ten thousand to tens0000 commentaries on classics/per minutes, in compressor casing, form negative pressure, though sealing seat 10 is provided with seal ring 6 and gets rid of oilhole 15, the adsorption force of negative pressure is very big, still can be with the lubricant oil sucking-off of coiling at sealing seat 10 and the gas compressor back of the body between 8 slits, cause lubrication oil consumption fast, and turbosupercharger is normal adjacent with motor, is subjected to the thermosetting oil smoke after the oil leak, befouling environment.

Summary of the invention

The purpose of this utility model provides a kind of turbosupercharger, and it can solve the premature wear problem of floating bearing in the leakage of lubricant oil and the rotating shaft well.

For achieving the above object, a kind of turbosupercharger that the utility model relates to, comprise rotating shaft, the middle casing that has grease channel and bearing support, be individually fixed in the turbine and the air compressor wheel at rotating shaft two ends, and volute that with middle casing be connected and compressor casing supporting with air compressor wheel with turbine, be assembled in the rotating shaft and have two floating bearings of several oilholes, be assembled in the rotating shaft and inboard and have a sealing seat of seal ring near air compressor wheel, and and the gas compressor back of the body dish of sealing seat fitted seal lubricant oil, on the bearing support of described middle casing, and be provided with annular oil groove with the corresponding part, oilhole position on the floating bearing; On sealing seat, adjacent periphery, be provided with one section oil return screw thread with gas compressor back of the body dish.

As further improvement of the utility model, described two floating bearings can hold replacement by an integral float shaft, and be provided with thereon two groups, each several be communicated with the oilhole of inside and outside circumferential surface.

As further improvement of the utility model, also be provided with one group of vent between two groups of oilholes that integral float shaft holds.

Description of drawings

Fig. 1 is the structural representation of conventional turbosupercharger.

Fig. 2 is a structural representation of the present utility model.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

As shown in Figure 2, a kind of turbosupercharger of the present utility model, comprise rotating shaft 1, the middle casing 11 that has grease channel and bearing support, be individually fixed in the turbine 2 and the air compressor wheel 4 at rotating shaft 1 two ends, with turbine 2 and air compressor wheel 4 supporting and volute 3 that be connected with middle casing 11 and compressor casings 5, be assembled in the rotating shaft 1 and inboard and have a sealing seat 10 of seal ring 6 near air compressor wheel 4, gas compressor back of the body dish 8 with sealing seat 10 fitted seal lubricant oil, and the integral float shaft that is assembled in the rotating shaft 1 holds 12, and be provided with two groups thereon, in each several connection, the oilhole of outer peripheral surface, between two groups of oilholes, also be provided with one group of vent 13, on the bearing support of described middle casing, and the corresponding part, oilhole position of holding on 12 with integral float shaft is provided with annular oil groove 14, is coiling 8 adjacent with the gas compressor back of the body, the periphery of sealing seat 10 is provided with one section oil return screw thread 7.

On basis of the present utility model, also can increase other component and the structure identical with existing known technology.

The setting of annular oil groove 14 in the utility model is used to store and enters lubricant oil and impurity wherein, prevents the wearing and tearing of floating bearing 12; The setting of oil return screw thread 7, during work, sealing seat 10 rotates with rotating shaft 1, stops oil leak by oil return screw thread 7; Integral float shaft holds 12 setting, when the trend of circular runout occurring from the nearer end wearing and tearing of lubricant oil filler opening, can restrict it by the other end to beat, thereby reduce wearing and tearing; Integral float shaft holds the setting of vent 13 on 12, can reduce the pressure at oilhole place, two ends.

Claims

1. turbosupercharger, comprise rotating shaft, the middle casing that has grease channel and bearing support, be individually fixed in the turbine and the air compressor wheel at rotating shaft two ends, and volute that with middle casing be connected and compressor casing supporting with air compressor wheel with turbine, be assembled in the rotating shaft and have two floating bearings of several oilholes, be assembled in the rotating shaft and inboard and have a sealing seat of seal ring near air compressor wheel, and and the gas compressor back of the body dish of sealing seat fitted seal lubricant oil, it is characterized in that on the bearing support of described middle casing, and be provided with annular oil groove with the corresponding part, oilhole position on the floating bearing.

2. a kind of turbosupercharger according to claim 1 is characterized in that being provided with one section oil return screw thread on described sealing seat, adjacent with gas compressor back of the body dish periphery.

3. turbosupercharger, comprise rotating shaft, the middle casing that has grease channel and bearing support, be individually fixed in the turbine and the air compressor wheel at rotating shaft two ends, and volute that with middle casing be connected and compressor casing supporting with air compressor wheel with turbine, be assembled in the rotating shaft and have two groups, in each several connection, the integral float shaft of the oilhole of outer peripheral surface holds, be assembled in the rotating shaft and inboard and have a sealing seat of seal ring near air compressor wheel, and and the gas compressor back of the body dish of sealing seat fitted seal lubricant oil, it is characterized in that on the bearing support of described middle casing, and be provided with annular oil groove with the corresponding part, oilhole position on the floating bearing.

4. a kind of turbosupercharger according to claim 3 is characterized in that also being provided with one group of vent between two groups of oilholes that described integral float shaft holds.