CN112610328A

CN112610328A - Booster diffusion mechanism

Info

Publication number: CN112610328A
Application number: CN202011514155.9A
Authority: CN
Inventors: 沈艳; 叶震杰; 袁玺; 惠毅
Original assignee: Wuxi Credible Turbocharger Co ltd
Current assignee: Wuxi Credible Turbocharger Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-04-06

Abstract

The invention relates to a pressure-expanding mechanism of a supercharger. In particular to a pressure expanding mechanism for a supercharger on an automobile engine. It comprises an intermediate body and an outer pressure shell. A turbine shaft is arranged in the middle body, and one end of the turbine shaft, which is not provided with a turbine, extends out and is connected with an impeller. The center and one side of the outer pressure shell are respectively provided with a first air inlet and an air outlet. The method is characterized in that: an inner pressure shell and a pressure expansion plate are sequentially arranged between the intermediate body and the outer pressure shell, and the periphery of the outer pressure shell, the pressure expansion plate and the inner pressure shell are connected together in a sealing manner. And one side of the inner pressure shell is provided with a second air inlet, and one end of the turbine shaft without the turbine extends into the inner pressure shell. The pressure expanding plate is provided with a second central hole. The impeller is a composite impeller and is formed by butt joint of two solid horn parts in a horn mouth-to-mouth mode. By adopting the pressure-expanding mechanism of the pressurizer, one pressurizer can play the effect of two pressurizers, the number of the pressurizers can be reduced, the installation space is reduced, the steel consumption is reduced, and the production cost is reduced.

Description

Booster diffusion mechanism

Technical Field

The present invention relates to a supercharger. In particular to a pressure expanding mechanism for a supercharger on an automobile engine.

Background

It is known in the automotive industry to increase the power of an engine by providing a supercharger on the engine with a constant displacement. To further increase the power of an automobile engine, it is conventional to increase the number of superchargers. Therefore, in recent years, two superchargers are generally provided in some higher-grade automobiles. Although the power of the engine can be further improved by arranging two superchargers, the two superchargers not only consume more steel and have high production cost, but also occupy larger installation space compared with one supercharger.

Disclosure of Invention

The invention aims to overcome the defects and provide a pressure-expanding mechanism of a supercharger. By adopting the supercharger pressure-expanding machine, one supercharger can play the effect of two superchargers, the number of the superchargers can be reduced, the installation space is reduced, the steel consumption is reduced, and the production cost is reduced.

The above problems to be solved by the present invention are realized by the following technical solutions:

the pressure-expanding mechanism of the pressure booster comprises an intermediate body and an outer pressure shell. The middle body is internally provided with a shaft hole, a turbine shaft is arranged in the shaft hole, and one end of the turbine shaft without a turbine extends out and is connected with an impeller. The center and one side of the outer pressure shell are respectively provided with a first air inlet and an air outlet. The method is characterized in that: an inner pressure shell and a pressure expansion plate are sequentially arranged between the intermediate body and the outer pressure shell, and the periphery of the outer pressure shell, the pressure expansion plate and the inner pressure shell are connected together in a sealing manner. The inner pressure shell is basin-shaped, a second air inlet is formed in the shell wall on one side of the inner pressure shell, a first central hole corresponding to the turbine shaft is formed in the bottom of the inner pressure shell, and one end, without the turbine, of the turbine shaft extends into the inner pressure shell through the first central hole. And a second central hole is formed in the pressure expansion plate, an arc-shaped lower flanging is arranged in the circumferential direction of the second central hole, and the aperture of the second central hole is the same as that of the first air inlet of the outer pressure shell. The impeller is the combined type impeller, and this combined type impeller is "horn mouth to mouth" butt joint by two solid horn portions and forms, and the circumference of two solid horn portions all the equipartition has the heliciform blade. One end of the composite impeller is connected with the end of the turbine shaft positioned in the inner pressure shell. Gaps are reserved between the two solid horn parts and the air inlet of the blade and the outer pressure shell and between the two solid horn parts and the second center hole in the diffuser plate, and the two gaps are respectively communicated with the air outlet of the outer pressure shell and the second air inlet of the inner pressure shell.

And the second air inlet on the inner pressure shell is connected with an extension short pipe, and the outer end of the extension short pipe extends out of the outer pressure shell and is parallel to the first air inlet of the outer pressure shell.

The periphery of the outer pressure shell, the pressure expansion plate and the inner pressure shell are connected together by a first screw and an O-shaped sealing ring.

The bottom of the inner pressure shell is connected with the middle body through a second screw and an O-shaped sealing ring.

According to the scheme, the inner pressure shell and the pressure expansion plate are sequentially arranged between the intermediate body and the outer pressure shell, the pressure expansion plate and the inner pressure shell are connected in a sealing manner. The inner pressure shell is basin-shaped, a second air inlet is formed in the shell wall on one side of the inner pressure shell, a first central hole corresponding to the turbine shaft is formed in the bottom of the inner pressure shell, and one end, without the turbine, of the turbine shaft extends into the inner pressure shell through the first central hole. And a second central hole is formed in the pressure expansion plate, an arc-shaped lower flanging is arranged in the circumferential direction of the second central hole, and the aperture of the second central hole is the same as that of the first air inlet of the outer pressure shell. The impeller is the combined type impeller, and this combined type impeller is "horn mouth to mouth" butt joint by two solid horn portions and forms, and the circumference of two solid horn portions all the equipartition has the heliciform blade. One end of the composite impeller is connected with the end of the turbine shaft positioned in the inner pressure shell. Gaps are reserved between the two solid horn parts and the air inlet of the blade and the outer pressure shell and between the two solid horn parts and the second center hole in the diffuser plate, and the two gaps are respectively communicated with the air outlet of the outer pressure shell and the second air inlet of the inner pressure shell. On the basis of traditional booster, through increasing the internal pressure shell, become single tubaeform impeller for being the combined type impeller that "horn mouth is to mouthful" butt joint forms by two solid horn portions to set up first inlet port and second inlet port respectively on external pressure shell and internal pressure shell, these two inlet ports are relative with two solid horn portions and the blade of combined type impeller respectively, make a booster just can play the pressure boost effect of two boosters. Not only reduces the number of the superchargers and the installation space, but also reduces the consumption of steel and the production cost.

Drawings

FIG. 1 is a schematic view of a diffuser mechanism for a supercharger of the present invention.

Detailed Description

As shown in fig. 1, the diffuser mechanism of the supercharger of the present invention comprises an intermediate body 10 and an outer pressure shell 1. A shaft hole is processed in the middle body 10, the shaft hole is transversely arranged, a turbine shaft 13 is installed in the shaft hole through a bearing 12, and one end, without a turbine, of the turbine shaft 13 extends out and is connected with an impeller 14. The center and one side of the outer pressure shell 1 are respectively provided with a first air inlet 3 and an air outlet 5, the periphery of the outer pressure shell is provided with an annular air duct 2, and the inner side of the annular air duct 2 is provided with an annular opening in the circumferential direction. An inner pressure shell 7 and a diffusion plate 16 are sequentially arranged between the intermediate body 10 and the outer pressure shell 1, the diffusion plate 16 and the inner pressure shell 7 are connected in a sealing manner all around. The inner pressure shell 7 is in a basin shape, a second air inlet 9 is formed in the wall of one side of the inner pressure shell, a first central hole corresponding to the turbine shaft 13 is formed in the bottom of the inner pressure shell, and one end, without a turbine, of the turbine shaft 13 extends into the inner pressure shell 7 through the first central hole. The pressure expansion plate 16 is a circular plate, a second central hole is processed on the pressure expansion plate, and an arc-shaped downward flanging 15 is processed on the second central hole in the circumferential direction, so that the aperture of the second central hole is the same as that of the first air inlet 3 of the outer pressure shell 1. Impeller 14 is the combined type impeller, and this combined type impeller is "horn mouth to mouth" butt joint by two solid horn portions and forms, and the circumference of two solid horn portions all the equipartition has heliciform blade 4. One end of the composite impeller is connected with the end of a turbine shaft 13 positioned in the inner pressure shell 7. Gaps are reserved between the two solid horn parts and between the two solid horn parts and the first air inlet 3 of the outer pressure shell 1 and the second central hole of the pressure expansion plate 16, and the two solid horn parts are respectively communicated with the air outlet 5 of the outer pressure shell 1 and the second air inlet 9 of the inner.

The second air inlet 9 on the inner pressure shell 7 and the air outlet 5 on the outer pressure shell 1 are both connected with extension short pipes 6, and the outer ends of the two extension short pipes 6 are both extended out and are parallel to the first air inlet 3 of the outer pressure shell 1.

The periphery of the outer pressure shell, the periphery of the pressure expansion plate and the periphery of the inner pressure shell are connected together through a first screw and an O-shaped sealing ring. The bottom of the inner pressure shell is connected with the middle body through a second screw and an O-shaped sealing ring.

It can be seen from the above structure that, on the basis of the traditional supercharger, the inner pressure shell 7 is added, the single horn-shaped impeller is changed into the composite impeller formed by butt joint of two solid horn parts in a horn mouth-to-mouth manner, the outer pressure shell 1 and the inner pressure shell 7 are respectively provided with the first air inlet 3 and the second air inlet 9, and the two air inlets are respectively opposite to the two solid horn parts and the blades of the composite impeller, so that one supercharger can achieve the supercharging effect of two superchargers.

Claims

1. The supercharger diffusion mechanism comprises an intermediate body (10) and an outer pressure shell (1); a shaft hole is formed in the intermediate body (10), a turbine shaft (13) is arranged in the shaft hole, and one end of the turbine shaft (13) without a turbine extends out and is connected with an impeller (14); the center and one side of the outer pressure shell (1) are respectively provided with a first air inlet (3) and an air outlet (5); the method is characterized in that: an inner pressure shell (7) and a pressure expansion plate (16) are sequentially arranged between the intermediate body (10) and the outer pressure shell (1), and the peripheries of the outer pressure shell (1), the pressure expansion plate (16) and the inner pressure shell (7) are connected together in a sealing manner; the inner pressure shell (7) is basin-shaped, a second air inlet (9) is formed in the shell wall on one side of the inner pressure shell, a first central hole corresponding to the turbine shaft (13) is formed in the bottom of the inner pressure shell, and one end, without a turbine, of the turbine shaft (13) extends into the inner pressure shell (7) through the first central hole; a second central hole is formed in the pressure expansion plate (16), an arc-shaped lower flanging (15) is formed in the circumferential direction of the second central hole, and the aperture of the second central hole is the same as that of the first air inlet (3) of the outer pressure shell (1); the impeller (14) is a composite impeller which is formed by butt joint of two solid horn parts in a horn mouth-to-mouth manner, and spiral blades (4) are uniformly distributed in the circumferential direction of the two solid horn parts; one end of the composite impeller is connected with one end of a turbine shaft (13) positioned in the inner pressure shell (7); gaps are reserved between the two solid horn parts and the first air inlet (3) of the blade (4) and the outer pressure shell (1) and between the two solid horn parts and the second center holes in the pressure expanding plate (16), and the two gaps are respectively communicated with the air outlet (5) of the outer pressure shell (1) and the second air inlet (9) of the inner pressure shell (7).

2. The supercharger diffuser mechanism of claim 1, wherein: and the second air inlet (9) on the inner pressure shell (7) is connected with an extension short pipe (6), and the outer end of the extension short pipe extends out of the outer pressure shell (1) and is parallel to the first air inlet (3) of the outer pressure shell.

3. The supercharger diffuser mechanism of claim 1, wherein: the periphery of the outer pressure shell (1), the pressure expanding plate (16) and the inner pressure shell (7) are connected together by means of a first screw (17) and an O-shaped sealing ring (8).

4. The supercharger diffuser mechanism according to claim 1, 2, or 3, wherein: the bottom of the inner pressure shell (7) is connected with the intermediate body (10) through a second screw (11) and an O-shaped sealing ring (8).