CN114233675A

CN114233675A - Variable inlet compressor

Info

Publication number: CN114233675A
Application number: CN202111629097.9A
Authority: CN
Inventors: 丁占铭; 刘欣源; 侯琳琳; 赵洋; 王翠翠
Original assignee: China North Engine Research Institute Tianjin
Current assignee: China North Engine Research Institute Tianjin
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-03-25

Abstract

The invention provides a variable inlet gas compressor, which belongs to the field of turbocharging and comprises a valve plate, a transmission mechanism, a driver and an avoiding groove; the valve plate is arranged in the shell of the compressor, the valve plate is arranged at the upstream of the impeller of the compressor, the driver is connected to the valve plate through the transmission mechanism to realize the rotation of the valve plate, and the avoidance groove is arranged in the shell; the shell is equipped with the pivot hole, and the driver setting is in the outside of shell, and drive mechanism one end is connected to the driver, and the other end passes the pivot jogged joint to valve block. The invention can be applied to a vehicle turbocharger, an electric supercharger and the like, and the working range of the air compressor is widened by changing the inlet area.

Description

Variable inlet compressor

Technical Field

The invention belongs to the technical field of turbocharging, and particularly relates to a variable inlet compressor.

Background

The automotive turbocharger often faces the engineering problem of insufficient surge margin of the compressor under the working condition of small flow. The conventional gas compressor is of a fixed geometric structure, and the effective working condition range of the gas compressor is between a large-flow blockage characteristic line and a small-flow side surge characteristic line. When the compressor obtains better efficiency under the working condition of large flow, the efficiency is often close to or even exceeds the surge line under the working condition of small flow. Especially, when the engine works in a plateau environment, the running line of the air compressor deviates to a small flow side, and the problem of insufficient surge margin is more prominent. Research shows that the flow characteristics of the air compressor can be changed by adjusting the sectional area of the inlet of the air compressor, the surge line moves towards the small flow direction when the area of the inlet of the air compressor is reduced, and the surge margin can be obviously improved.

Disclosure of Invention

In view of the above, the present invention is directed to a variable inlet compressor, which can be applied to a turbocharger, an electric supercharger, etc. for a vehicle, and which widens the working range of the compressor by changing the inlet area.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a variable inlet compressor comprises a valve plate, a transmission mechanism, a driver and an avoiding groove; the valve block sets up inside the shell of compressor, and the valve block sets up the upper reaches at the compressor impeller, and the driver is connected to the valve block through drive mechanism, realizes the rotation of valve block, and the inside of shell is equipped with dodges the groove.

Further, the shell is provided with a rotating shaft hole, the driver is arranged outside the shell, one end of the transmission mechanism is connected to the driver, and the other end of the transmission mechanism penetrates through the rotating shaft hole to be connected to the valve plate.

Furthermore, the valve plate is provided with an opening state and a closing state, and the two states are realized by the driving of the driver.

Furthermore, the valve block is integrally annular, and when the valve block is closed, the axis of the valve block is collinear with the axis of the compressor impeller, so that the inlet area of the compressor is reduced.

Furthermore, the avoiding groove is used for providing a space for rotation of the valve plate, and the valve plate is placed in the avoiding groove in the opening state of the valve plate so as to avoid interference of the valve plate on air flow.

Compared with the prior art, the variable inlet compressor has the following advantages:

(1) the variable inlet air compressor can change the flow characteristics of the air compressor by controlling the state of the valve plate. The surge characteristic of the compressor deviates to a small flow direction under the closed state of the valve plate, and the surge margin is widened; the opening state of the valve plate is suitable for the working conditions of large flow and low pressure ratio. The inlet area of the compressor is changed by controlling the state of the valve plate, and the surge margin of the compressor is greatly improved.

(2) According to the variable inlet gas compressor, the valve plate control structure can adopt a mature ball valve or butterfly valve structure, the structure is simple, the control is easy, the reliability is good, and the integral structure integration level is high.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic cross-sectional view of a variable inlet compressor according to an embodiment of the present invention.

Description of reference numerals:

1. a valve plate; 2. a transmission mechanism; 3. a driver; 4. an avoidance groove; 5. a housing; 6. an impeller; 7. a volute.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

A variable inlet compressor comprises a valve plate 1, a transmission mechanism 2, a driver 3 and an avoiding groove 4; the valve block 1 is arranged inside a shell 5 of the compressor, the valve block 1 is arranged on the upstream of an impeller 6 of the compressor, the driver 3 is connected to the valve block 1 through the transmission mechanism 2, the valve block 1 is rotated, an avoiding groove 4 is formed in the shell 5, and the avoiding groove is hidden in the avoiding groove 4 when the valve block 1 is rotated, so that the inlet area is increased.

Further, shell 5 is equipped with the pivot hole, and driver 3 sets up in the outside of

shell

5, and 2 one end of drive mechanism are connected to driver 3, and the other end passes pivot jogged joint to valve block 1, and driver 3 and actuating mechanism can realize the rotation of valve block 1, and then change the size of the area of admitting air.

Further, the valve plate 1 is provided with two states of opening and closing, and the two states are realized by the driving of the driver 3.

Further, the valve plate 1 is annular, when the valve plate 1 is closed, the axis of the valve plate 1 is collinear with the axis of the compressor impeller 6, and the inlet area of the compressor is reduced.

Further, dodge groove 4 and be used for providing space to the rotation of valve block 1, the valve block is placed in dodging the inslot under the valve block 1 state of opening to avoid the interference of valve block to the air current.

The surge characteristic of the compressor deviates to a small flow direction under the closed state of the valve plate 1, and the surge margin is widened; the opening state of the valve plate 1 is suitable for the working conditions of large flow and low pressure ratio. The inlet area of the compressor is changed by controlling the state of the valve plate 1, and the surge margin of the compressor is greatly improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A variable inlet compressor, characterized by: the valve plate, the transmission mechanism, the driver and the avoiding groove are included; the valve block sets up inside the shell of compressor, and the valve block sets up the upper reaches at the compressor impeller, and the driver is connected to the valve block through drive mechanism, realizes the rotation of valve block, and the inside of shell is equipped with dodges the groove.

2. The variable inlet compressor of claim 1, wherein: the shell is equipped with the pivot hole, and the driver setting is in the outside of shell, and drive mechanism one end is connected to the driver, and the other end passes the pivot jogged joint to valve block.

3. The variable inlet compressor of claim 2, wherein: the valve plate is provided with an opening state and a closing state, and the two states are realized by the driving of the driver.

4. The variable inlet compressor of claim 1, wherein: the valve block is integrally in a ring shape, when the valve block is closed, the axis of the valve block is collinear with the axis of the compressor impeller, and the inlet area of the compressor is reduced.

5. The variable inlet compressor of claim 1, wherein: the avoiding groove is used for providing space for rotation of the valve plate, and the valve plate is placed in the avoiding groove in the opening state of the valve plate so as to avoid interference of the valve plate on air flow.