CN214533202U

CN214533202U - Supercharger with two-stage air inlet supercharging

Info

Publication number: CN214533202U
Application number: CN202023004382.5U
Authority: CN
Inventors: 陈晨; 蔡永君
Original assignee: Jiangsu Easyland Automotive Science & Technology Co ltd
Current assignee: Jiangsu Easyland Automotive Science & Technology Co ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-10-29
Anticipated expiration: 2030-12-14

Abstract

The utility model relates to a booster technical field, in particular to booster of two-stage pressure boost admits air. Having a supercharger shaft; the intermediate body is sleeved on the middle section of the supercharger shaft through an intermediate bearing; the compressor volute is sleeved and fixed at one end of the intermediate body; the turbine volute is sleeved and fixed at the other end of the intermediate body; the second-stage large impeller is arranged on the supercharger shaft and is arranged in the compressor volute; the air inlet seat is fixed on the other side of the compressor volute through a baffle plate sleeved on the supercharger shaft, and a baffle plate bearing is arranged between the baffle plate and the supercharger shaft; the first-stage small impeller and the second-stage large impeller are arranged on the supercharger shaft and are arranged in the air inlet seat, and one end of the second-stage large impeller is locked on the supercharger shaft through a shaft end nut. The utility model discloses a two-stage impeller two-stage pressure boost, little impeller precompression is used to the first order, and the second level recompresses with big impeller, can show promotion compressor pressure ratio, reduces the hysteresis under the low rotational speed, and inlet pressure promotes.

Description

Supercharger with two-stage air inlet supercharging

Technical Field

The utility model relates to a booster technical field, in particular to booster of two-stage pressure boost admits air.

Background

Conventionally, as a technique for improving the engine output, a method (supercharging) of compressing intake air by a supercharger and supplying the compressed intake air to an engine is known, and has been widely used in an engine for an automobile or the like. Generally, a supercharger has a rotating shaft and a compressor impeller provided on one end side of the rotating shaft. The rotary shaft is rotated at a high speed by exhaust energy of exhaust gas or a driving force of a motor or the like, and intake air is compressed by a compressor impeller provided on one end side of the rotary shaft.

At present, the mainstream of the supercharger is replaced by a single-impeller gas compressor, the supercharging pressure is low, the supercharging effect is delayed, and the pressure maintaining effect is poor.

Disclosure of Invention

The utility model aims at overcoming the defect that prior art exists, provide the booster of the two-stage pressure boost of admitting air.

Realize the utility model discloses the technical scheme of purpose is: a supercharger for two-stage supercharging of intake air has a supercharger shaft; the intermediate body is sleeved on the middle section of the supercharger shaft through an intermediate bearing; the compressor volute is sleeved and fixed at one end of the intermediate body; the turbine volute is sleeved and fixed at the other end of the intermediate body; the second-stage large impeller is arranged on the supercharger shaft and is arranged in the compressor volute; the air inlet seat is fixed on the other side of the compressor volute through a baffle plate sleeved on the supercharger shaft, and a baffle plate bearing is arranged between the baffle plate and the supercharger shaft; the first-stage small impeller is arranged on the supercharger shaft and is arranged in the air inlet seat, and one end of the second-stage large impeller is locked on the supercharger shaft through a shaft end nut.

Furthermore, a plurality of circular uniformly distributed through holes are formed in the baffle, a plurality of circular uniformly distributed mounting holes are formed in the outer side of the baffle, and the baffle is fastened on the compressor volute through bolts penetrating through the air inlet seat and the mounting holes.

Furthermore, a circle of circular boss for sealing and clamping the compressor volute is arranged on the end face of the baffle plate, which is in contact with the compressor volute; and a circle of circular groove for sealing and clamping the air inlet seat is arranged on the end surface of the baffle plate contacting with the air inlet seat.

Furthermore, a plurality of annular groove type labyrinth seals are arranged on the inner ring of the baffle plate, which is in contact with the shaft of the supercharger.

Furthermore, an air inlet seat boss matched with the circular groove is arranged on the end face, in contact with the baffle, of the air inlet seat.

Furthermore, the number of the through holes is 10, and the number of the mounting holes is 3.

After the technical scheme is adopted, the utility model discloses following positive effect has:

(1) the utility model discloses a two-stage impeller two-stage pressure boost, the small impeller precompression of one-level for the first order, the second level recompresses with the big impeller of second grade, can show promotion compressor pressure ratio, reduces the hysteresis under the low rotational speed, and admission pressure is showing the promotion, and dynamic response is rapid.

Drawings

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which

FIG. 1 is an isometric view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic structural view of a baffle;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 6 is an enlarged view of a portion of FIG. 3;

fig. 7 is a partially enlarged view of fig. 5.

Detailed Description

See fig. 1 to 3, the present invention has a supercharger shaft 1. The intermediate body 2 and the intermediate body 2 are sleeved on the middle section of the supercharger shaft 1 through an intermediate bearing 3. The compressor volute 4 is sleeved and fixed at one end of the intermediate body 2. The turbine volute 5 is sleeved and fixed at the other end of the middle body 2. And the second-stage large impeller 6 is arranged on the supercharger shaft 1 and is arranged in the compressor volute 4. The air inlet seat 7 is fixed on the other side of the compressor volute 4 through a baffle 8 sleeved on the supercharger shaft 1, and a baffle bearing 9 is arranged between the baffle 8 and the supercharger shaft 1. The first-stage small impeller 10 and the second-stage large impeller 6 are arranged on the supercharger shaft 1 and are arranged in the air inlet seat 7, and one end of the first-stage small impeller is locked on the supercharger shaft 1 through a shaft end nut 11.

Referring to fig. 4, 10 circular uniformly distributed through holes 801 are formed in the

baffle

8, 3 circular uniformly distributed mounting holes 802 are formed in the outer side of the baffle 8, and the baffle 8 is fastened on the compressor volute 4 through bolts penetrating through the air inlet seat 7 and the mounting holes 802.

Referring to fig. 5 and 7, a circle of circular bosses 803 for sealing and clamping the compressor volute 4 are arranged on the end surface of the baffle plate 8 contacting with the compressor volute 4; a circle of circular grooves 804 for sealing and clamping the air inlet seat 7 are arranged on the contact end surface of the baffle plate 8 and the air inlet seat 7. A plurality of annular groove type labyrinth seals 805 are arranged on the inner ring of the baffle plate 8 which is contacted with the supercharger shaft 1.

Referring to fig. 6, an air inlet seat boss 701 matched with the circular groove 804 is arranged on the end surface of the air inlet seat 7 contacted with the baffle plate 8.

The utility model discloses a theory of operation does: the utility model discloses a two-stage impeller two-stage pressure boost, the first order is with the 10 precompression of the little impeller of one-level, and the second level is with the 6 recompression of the big impeller of second grade, can show promotion compressor pressure ratio, reduces the hysteresis under the low rotational speed, and inlet pressure is showing the promotion, and dynamic response is rapid.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An intake two-stage supercharger, comprising:

a supercharger shaft (1);

the intermediate body (2), the intermediate body (2) is sleeved on the middle section of the supercharger shaft (1) through an intermediate bearing (3);

the compressor volute (4) is sleeved and fixed at one end of the intermediate body (2);

the turbine volute (5) is sleeved and fixed at the other end of the intermediate body (2);

the two-stage large impeller (6), the two-stage large impeller (6) is arranged on the supercharger shaft (1) and is arranged in the compressor volute (4);

the air inlet seat (7) is fixed to the other side of the compressor volute (4) through a baffle (8) sleeved on the supercharger shaft (1), and a baffle bearing (9) is arranged between the baffle (8) and the supercharger shaft (1);

the two-stage large impeller (6) is arranged on the supercharger shaft (1) and is arranged in the air inlet seat (7), and one end of the two-stage large impeller is locked on the supercharger shaft (1) through a shaft end nut (11).

2. The supercharger of claim 1, wherein: the baffle (8) is provided with a plurality of circular uniform distribution through holes (801), a plurality of circular uniform distribution mounting holes (802) are formed in the outer side of the baffle, and the baffle (8) is fastened on the compressor volute (4) through bolts penetrating through the air inlet seat (7) and the mounting holes (802).

3. The supercharger of claim 2, wherein: a circle of circular bosses (803) used for sealing and clamping the compressor volute (4) are arranged on the end face of the baffle (8) in contact with the compressor volute (4); and a circle of circular groove (804) for sealing and clamping the air inlet seat (7) is arranged on the end surface of the baffle plate (8) contacting with the air inlet seat (7).

4. A supercharger according to claim 2 or 3, characterised in that: and a plurality of annular groove type labyrinth seals (805) are arranged on the inner ring of the baffle (8) which is in contact with the supercharger shaft (1).

5. The supercharger of claim 3, wherein: and an air inlet seat boss (701) matched with the circular groove (804) is arranged on the end surface of the air inlet seat (7) contacted with the baffle (8).

6. A supercharger according to claim 2 or 3, characterised in that: the number of the through holes (801) is 10, and the number of the mounting holes (802) is 3.