CN217813680U - Novel diffusion cavity structure and turbocharger with same - Google Patents
Novel diffusion cavity structure and turbocharger with same Download PDFInfo
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- CN217813680U CN217813680U CN202221740376.2U CN202221740376U CN217813680U CN 217813680 U CN217813680 U CN 217813680U CN 202221740376 U CN202221740376 U CN 202221740376U CN 217813680 U CN217813680 U CN 217813680U
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- impeller
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- side wall
- diffusion chamber
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model relates to a turbo charger technical field, in particular to novel diffusion chamber structure. The pressure-expanding plate is provided with an annular side wall, a shaft hole for accommodating a rotating shaft, an impeller groove for accommodating an impeller and a sealing ring seat notch for accommodating a sealing ring seat; a convergent annular slope surface is arranged between the side wall and the impeller groove. The utility model discloses a convergence type diffusion chamber, channel width reduces gradually, and the gas velocity of flow is mild in the convergence type region, and gas flow separation loss is little, compares traditional parallel diffusion chamber, and airflow stability is better, and efficiency is higher, and compressor flow range is wideer. The convergent diffusion cavity is adopted, so that the flow separation loss of gas is small, and the kinetic energy of the impeller is indirectly utilized, so that the compression amount of the gas is increased, and the compression efficiency is improved.
Description
Technical Field
The utility model relates to a turbo charger technical field, in particular to novel diffusion chamber structure.
Background
The turbocharger is actually an air compressor that increases the intake air amount by compressing air. The engine uses the inertia impulse force of the exhaust gas from the engine to push the turbine in the turbine chamber, the turbine drives the coaxial impeller, the impeller presses the air sent by the air filter pipeline, and the air is pressurized and enters the cylinder. When the rotating speed of the engine is increased, the exhaust gas exhaust speed and the rotating speed of the turbine are also increased synchronously, the impeller compresses more air to enter the cylinder, the pressure and the density of the air are increased, more fuel can be combusted, the fuel quantity is correspondingly increased, the rotating speed of the engine is adjusted, and the output power of the engine is increased.
Turbocharger performance MAP flow range width and turbocharger efficiency are important to turbocharger applications, and there are many factors that affect flow range and efficiency. The flow range and the compressor efficiency of the medium-pressure end are influenced by the sizes of an impeller and a pressure shell of the compressor, the shapes and the sizes of the impeller and the pressure shell are increased, the performance MAP of the compressor can be widened, the efficiency of the compressor can also be increased, the installation space of a supercharger at a client side is limited, and the three-dimensional size of the supercharger space is limited.
Disclosure of Invention
The utility model aims at overcoming the defect that prior art exists, providing a novel diffusion chamber structure.
Realize the utility model discloses the technical scheme of purpose is: a novel pressure expansion cavity structure is provided with a pressure shell and a pressure expansion plate, wherein a pressure expansion surface of the side wall of the pressure shell and the side wall of the pressure expansion plate form the pressure expansion cavity structure, and the pressure expansion plate is provided with an annular side wall, a shaft hole for accommodating a rotating shaft, an impeller groove for accommodating an impeller and a sealing ring seat notch for accommodating a sealing ring seat; a convergent annular slope surface is arranged between the side wall and the impeller groove.
Further, the slope of annular domatic is 3.
Furthermore, the pressure shell is provided with an air inlet, and the air inlet and the shaft hole are coaxially arranged.
A turbocharger comprises any one of the novel diffusion cavity structures.
After the technical scheme is adopted, the utility model discloses following positive effect has:
(1) The utility model discloses a convergence type diffusion chamber, the channel width reduces gradually, and the regional interior gas velocity of flow of convergence type is mild, and gas flow separation loss is little, compares traditional parallel diffusion chamber, and airflow stability is better, and efficiency is higher, and compressor flow range is wideer.
(2) The utility model discloses a convergence type diffusion chamber, less gas flow separation loss has indirectly utilized the kinetic energy of impeller to increase gaseous decrement, improve compression efficiency.
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 a cross-sectional view of the present invention;
fig. 2 is a cross-sectional view of the pressure expanding plate of the present invention;
FIG. 3 is a cross-sectional view of an original diffusion chamber.
Detailed Description
Example 1
See fig. 1 and 2, the utility model discloses have pressure shell 1 and diffuser plate 2, its characterized in that: the pressure expansion surface of the side wall of the pressure shell 1 and the side wall 21 of the pressure expansion plate 2 form a pressure expansion cavity structure, and the pressure expansion plate 2 is provided with an annular side wall 21, a shaft hole 22 for accommodating a rotating shaft, an impeller groove 23 for accommodating an impeller and a sealing ring seat notch 24 for accommodating a sealing ring seat; a converging annular ramp 25 is provided between the side wall 21 and the impeller groove 23. The slope of the annular slope 25 is 3 degrees, the pressure shell 1 is provided with an air inlet 11, and the air inlet 11 and the shaft hole 22 are coaxially arranged.
The convergent type expands the pressure chamber, and the channel width reduces gradually, and the convergence angle is about 3, and the regional gaseous velocity of flow of convergence is mild in the convergent type, and the gas flow separation loss is little, compares traditional parallel expand the pressure chamber, and airflow stability is better, and efficiency is higher, and compressor flow range is wideer. The convergent diffusion cavity has small gas flow separation loss, and indirectly utilizes the kinetic energy of the impeller, thereby increasing the compression amount of gas and improving the compression efficiency.
Fig. 3 shows an original diffusion chamber structure, which is a conventional diffusion chamber structure formed by combining a pressure shell side wall (also called a diffusion surface) and a diffusion plate side wall, wherein the gas flowing out of the impeller has high kinetic energy, the flow rate of the gas in the diffusion chamber is reduced, the pressure potential energy is increased, and the kinetic energy of the impeller is converted into pressure potential energy. The stability of airflow is not good, the efficiency is not high, and the flow range of the compressor is not wide.
Example 2
Referring to fig. 1, the present embodiment is a turbocharger including the novel diffusion chamber structure described in embodiment 1.
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 (4)
1. A novel diffusion cavity structure is provided with a pressure shell (1) and a diffusion plate (2), and is characterized in that: the pressure expansion surface of the side wall of the pressure shell (1) and the side wall (21) of the pressure expansion plate (2) form a pressure expansion cavity structure, and the pressure expansion plate (2) is provided with an annular side wall (21), a shaft hole (22) for accommodating a rotating shaft, an impeller groove (23) for accommodating an impeller and a sealing ring seat notch (24) for accommodating a sealing ring seat; a convergent annular slope surface (25) is arranged between the side wall (21) and the impeller groove (23).
2. The novel diffusion chamber structure of claim 1, wherein: the slope of the annular slope surface (25) is 3 degrees.
3. The novel diffusion chamber structure of claim 1, wherein: the pressure shell (1) is provided with an air inlet (11), and the air inlet (11) and the shaft hole (22) are coaxially arranged.
4. A turbocharger, characterized by: comprising the novel diffusion chamber structure of any one of claims 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221740376.2U CN217813680U (en) | 2022-07-06 | 2022-07-06 | Novel diffusion cavity structure and turbocharger with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221740376.2U CN217813680U (en) | 2022-07-06 | 2022-07-06 | Novel diffusion cavity structure and turbocharger with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217813680U true CN217813680U (en) | 2022-11-15 |
Family
ID=83963138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221740376.2U Active CN217813680U (en) | 2022-07-06 | 2022-07-06 | Novel diffusion cavity structure and turbocharger with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217813680U (en) |
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2022
- 2022-07-06 CN CN202221740376.2U patent/CN217813680U/en active Active
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