Turbocharger compressor casing and turbocharger
By designing a radial reduction part and an axial projection part in the turbocharger compressor housing to form a second compressor flow path, the performance compromise between the compressor housing and the vehicle frame in the prior art is solved. Problem, performance improvement and interference avoidance have been achieved.
Patent Information
- Application Number
- CN202421213456.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-30
AI Technical Summary
In existing turbocharger designs, in order to avoid interference with the vehicle frame, it is usually necessary to reduce the radial dimension of the compressor housing, resulting in a compromise in compressor performance.
A turbocharger compressor housing is designed, and a structure of a radial reduction part and an axial projection part is used to form a second compressor flow channel, and its cross-sectional area is close to or Equal to avoid changes in fluid flow and ensure compressor performance.
It effectively prevents interference between the turbocharger compressor case and the vehicle frame, while avoiding the loss of compressor performance and improving the competitiveness of the turbocharger.
Smart Images
Figure CN222526570U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of turbochargers, and in particular relates to a turbocharger compressor housing and a turbocharger. Background Art
[0002] In existing turbocharger designs, a diffuser with a larger diameter is usually used to improve the efficiency of the compressor, but this will increase the radial size of the compressor housing, causing interference with the vehicle frame. In order to reduce the risk of interference, the radial size of the compressor housing is usually reduced, but this will compromise the performance of the compressor. Utility Model Content
[0003] The utility model aims to provide a turbocharger compressor housing and a turbocharger in view of the deficiencies in the prior art.
[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a turbocharger compressor casing, comprising a compressor casing body and a first compressor flow channel arranged in the compressor casing body, the circumferential wall of the compressor casing body has a radial reduction portion and an axial protrusion corresponding to the radial reduction portion, the axial protrusion faces the inlet of the compressor casing, and a second compressor flow channel is formed in the interior of the compressor casing body at a position corresponding to the radial reduction portion and the axial protrusion, and the cross-sectional area of the second compressor flow channel is close to or equal to the cross-sectional area of the first compressor flow channel.
[0005] In a specific embodiment, the radially reducing portion is the first wall of the compressor casing body gradually approaching the second wall of the compressor casing body in the radial direction and then gradually moving away from the second wall in the radial direction, and the axially protruding portion is the protruding height of the third wall of the compressor casing body toward the inlet of the compressor casing gradually increasing in the axial direction and then gradually decreasing in the axial direction, the second wall is close to the inlet of the compressor casing and is connected to the first wall through the third wall, and the first wall is far away from the inlet of the compressor casing.
[0006] In a specific embodiment, the cross-section of the second compressor flow passage is non-circular.
[0007] In a specific embodiment, the cross-section of the second compressor flow passage is polygonal or elliptical.
[0008] In a specific embodiment, the compressor casing is formed by casting.
[0009] In a specific embodiment, the pressure ratio of the first compressor flow passage is close to or equal to the pressure ratio of the second compressor flow passage.
[0010] A turbocharger comprises the turbocharger compressor casing.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] 1. The turbocharger compressor casing of the utility model is provided with a radial reduction portion and an axial protrusion portion, which can prevent the turbocharger compressor casing from interfering with the vehicle frame. At the same time, the cross-sectional area of the second compressor flow channel is close to or equal to the cross-sectional area of the first compressor flow channel, which can prevent the fluid flow in the compressor casing body from changing, thereby preventing the loss of compressor casing performance, thereby preventing the loss of compressor efficiency, and avoiding compromise in compressor performance. The turbocharger compressor casing can ensure that the interference problem is no longer a limiting factor for the use of a large diffuser compressor casing, thereby making the turbocharger performance more competitive.
[0013] 2. The radially reduced portion of the turbocharger compressor casing of the utility model is the first wall of the compressor casing body which gradually approaches the second wall of the compressor casing body in the radial direction and then gradually moves away from the second wall in the radial direction, and the axially raised portion is the raised height of the third wall of the compressor casing body close to the compressor casing inlet which gradually increases in the axial direction and then gradually decreases in the axial direction, which can be easily formed and can achieve a smooth transition of the compressor casing body with good stability, thereby further preventing the performance of the compressor casing from being lost.
[0014] 3. The cross-section of the second compressor flow passage of the turbocharger compressor casing of the utility model is non-circular, which can make the cross-sectional area of the second compressor flow passage close to or equal to the cross-sectional area of the first compressor flow passage, thereby preventing the fluid flow in the compressor casing body from changing.
[0015] 4. The pressure ratio of the first compressor flow passage of the compressor casing of the turbocharger of the utility model is close to or equal to the pressure ratio of the second compressor flow passage, which can prevent the working efficiency and / or working temperature of the compressor from being affected.
[0016] 5. The turbocharger compressor casing of the utility model has a simple structure, is easy to form and use, has a wide range of applications, and is economical. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A schematic structural diagram of a specific embodiment of a turbocharger compressor housing of the utility model is shown;
[0018] Figure 2 A structural schematic diagram of another specific embodiment of a turbocharger compressor casing of the utility model is shown.
[0019] Among them, 1-compressor casing body; 11-first wall body; 12-second wall body; 13-third wall body; 2-first compressor flow channel; 3-radial reduction portion; 4-axial protrusion; 5-inlet of the compressor casing. DETAILED DESCRIPTION
[0020] The utility model will be further described below in conjunction with the embodiments shown in the accompanying drawings.
[0021] The directional terms such as "inner", "outer", "circumferential", "radial", etc. mentioned in the present invention are only used for reference to the drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.
[0022] like Figure 1 , Figure 2 As shown, the turbocharger compressor casing of the utility model comprises a compressor casing body 1 and a first compressor flow channel 2 arranged in the compressor casing body 1. The circumferential wall of the compressor casing body 1 has a radial reduction portion 3 (with the radial center of the compressor casing body 1 as the center of the circle, the radial reduction portion 3 refers to the position where the radius of the circumferential wall of the compressor casing body 1 from the center of the circle is smaller than the radius of the position on the circumferential wall of the compressor casing body 1 adjacent to the radial reduction portion 3 from the center of the circle) and an axial protrusion 4 corresponding to the radial reduction portion 3. The axial protrusion 4 faces the inlet 5 of the compressor casing. A second compressor flow channel is formed at a position inside the compressor casing body 1 corresponding to the radial reduction portion 3 and the axial protrusion 4. The cross-sectional area of the second compressor flow channel is close to or equal to the cross-sectional area of the first compressor flow channel 2. The radial reduction portion 3 can prevent the turbocharger compressor casing from interfering with the vehicle frame, and the axial protrusion 4 is arranged on the compressor casing body 1 at a position facing the compressor casing inlet 5, which can prevent the turbocharger compressor casing from interfering with the vehicle frame. And the cross-sectional area of the second compressor flow passage is close to or equal to the cross-sectional area of the first compressor flow passage 2, which can prevent the fluid flow in the compressor casing body 1 from changing, thereby preventing the loss of compressor casing performance, thereby preventing the loss of compressor efficiency, and avoiding compromise in compressor performance.
[0023] In a specific embodiment, Figure 1 , Figure 2As shown, the radial reduction portion 3 is the first wall 11 of the compressor case body 1 gradually approaching the second wall 12 of the compressor case body 1 in the radial direction and then gradually moving away from the second wall 12 in the radial direction, which can be easily formed and can achieve a smooth transition of the compressor case body 1, and at the same time, the stability is good, thereby further preventing the performance of the compressor case from being lost. The axial protrusion 4 is the protrusion height of the third wall 13 of the compressor case body 1 toward the inlet 5 of the compressor case gradually increases in the axial direction and then gradually decreases in the axial direction, which can be easily formed and can achieve a smooth transition of the compressor case body 1, and at the same time, the stability is good, thereby further preventing the performance of the compressor case from being lost. The second wall 12 is close to the inlet 5 of the compressor case and is connected to the first wall 11 through the third wall 13, and the first wall 11 is far away from the inlet 5 of the compressor case.
[0024] In a specific embodiment, Figure 1 , Figure 2 As shown, the cross section of the second compressor flow passage is non-circular, which can make the cross-sectional area of the second compressor flow passage close to or equal to the cross-sectional area of the first compressor flow passage 2, thereby preventing the fluid flow in the compressor casing body 1 from changing.
[0025] In a specific embodiment, the cross-section of the second compressor flow passage is polygonal or elliptical, which has a simple structure, is easy to use, and is easy to shape.
[0026] In a specific embodiment, Figure 1 , Figure 2 As shown, the compressor casing is formed by casting, which is easy to form, has wide adaptability and good economy.
[0027] In a specific embodiment, Figure 1 , Figure 2 As shown, the pressure ratio of the first compressor flow passage 2 is close to or equal to the pressure ratio of the second compressor flow passage, which can prevent the working efficiency and / or working temperature of the compressor from being affected.
[0028] When the turbocharger compressor housing of the utility model is used, the radial reduction portion 3 can be used to prevent the turbocharger compressor housing from interfering with the vehicle frame, and the axial protrusion 4 is arranged on the compressor housing body 1 at a position facing the inlet 5 of the compressor housing, thereby preventing the turbocharger compressor housing from interfering with the vehicle frame. In addition, by making the cross-sectional area of the second compressor flow passage close to or equal to the cross-sectional area of the first compressor flow passage 2, the fluid flow rate in the compressor housing body 1 can be prevented from changing, thereby preventing the loss of the compressor housing performance, thereby preventing the loss of compressor efficiency, and avoiding compromise in compressor performance.
[0029] Based on the above embodiments, the utility model also proposes a turbocharger, including the turbocharger compressor housing, wherein the turbocharger will not interfere with the vehicle frame, and can avoid performance compromise, making it more competitive.
[0030] The protection scope of the present invention is not limited to the above-mentioned embodiments. Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the scope and spirit of the present invention. If these modifications and variations fall within the scope of the claims of the present invention and their equivalents, the intent of the present invention also includes these modifications and variations.
Claims
1. A turbocharger compressor casing, characterized in that: The invention comprises a compressor casing body (1) and a first compressor flow passage (2) arranged in the compressor casing body (1); the circumferential wall of the compressor casing body (1) is provided with a radial reduction portion (3) and an axial protrusion (4) corresponding to the radial reduction portion (3); the axial protrusion (4) faces an inlet (5) of the compressor casing; a second compressor flow passage is formed in the interior of the compressor casing body (1) at a position corresponding to the radial reduction portion (3) and the axial protrusion (4); the cross-sectional area of the second compressor flow passage is close to or equal to the cross-sectional area of the first compressor flow passage (2).
2. The turbocharger compressor housing according to claim 1, characterized in that: The radially reducing portion (3) is a first wall (11) of the compressor casing body (1) that gradually approaches the second wall (12) of the compressor casing body (1) in the radial direction and then gradually moves away from the second wall (12) in the radial direction; the axially protruding portion (4) is a third wall (13) of the compressor casing body (1) that gradually increases in height toward the inlet (5) of the compressor casing in the axial direction and then gradually decreases in height in the axial direction; the second wall (12) is close to the inlet (5) of the compressor casing and is connected to the first wall (11) through the third wall (13); and the first wall (11) is far away from the inlet (5) of the compressor casing.
3. The turbocharger compressor housing according to claim 1, characterized in that: The cross section of the second compressor flow passage is non-circular.
4. The turbocharger compressor housing according to claim 3, characterized in that: The cross section of the second compressor flow passage is polygonal or elliptical.
5. The turbocharger compressor housing according to claim 1, characterized in that: The compressor casing is formed by casting.
6. The turbocharger compressor housing according to claim 1, characterized in that: The pressure ratio of the first compressor flow passage (2) is close to or equal to the pressure ratio of the second compressor flow passage.
7. A turbocharger, characterized in that: It comprises a turbocharger compressor casing according to any one of claims 1 to 6.