CN112253500A - High-low pressure air flow mixed electronic fan for hydrogen energy automobile - Google Patents
High-low pressure air flow mixed electronic fan for hydrogen energy automobile Download PDFInfo
- Publication number
- CN112253500A CN112253500A CN202010941797.0A CN202010941797A CN112253500A CN 112253500 A CN112253500 A CN 112253500A CN 202010941797 A CN202010941797 A CN 202010941797A CN 112253500 A CN112253500 A CN 112253500A
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- Prior art keywords
- automobile
- electronic fan
- fan
- pressure
- airflow
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
- F04D29/684—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid injection
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Fuel Cell (AREA)
Abstract
The invention provides a high-low pressure air flow mixing electronic fan for a hydrogen energy automobile, which comprises: the automobile electronic fan is arranged in an automobile cabin; and the cross section area of the automobile head-on airflow channel is gradually reduced along the flow direction, the airflow is gradually accelerated to become high-pressure jet flow, the tail end of the high-pressure airflow channel extends to the rear part of the automobile electronic fan, and the high-pressure airflow channel inputs high-pressure airflow to the rear part of the automobile electronic fan. The invention has the beneficial effects that: the high-pressure jet flow covers the inner surface of the fan cover to replace a boundary layer and isolate the friction between the fan airflow and the inner surface; due to the action of viscous force, the high-speed jet flow has an accelerating effect on the air flow of the fan, and the air speed is increased due to the reduction of pressure loss; the heat dissipation performance is correspondingly improved, and the heat dissipation requirement of the hydrogen energy automobile is met.
Description
Technical Field
The invention relates to the technical field of automobile heat dissipation, in particular to a high-low pressure air flow mixed electronic fan for a hydrogen energy automobile.
Background
The automobile cooling system timely distributes the heat of the heated parts, and ensures that the engine works in the most suitable temperature state. The automobile electronic fan is an important component of a vehicle cooling system, and the performance of the automobile electronic fan directly influences the heat dissipation effect of an engine, so that the performance of the engine is influenced. If the electronic fan of the automobile is not properly selected, the engine is insufficiently or excessively cooled, so that the working environment of the engine is deteriorated, and the performance and the service life of the engine are further influenced. The liquid-gas temperature difference of the hydrogen energy automobile cooling water is smaller than that of a traditional fuel oil vehicle, the area and the thickness of a radiator of a fuel cell are higher than those of the traditional automobile under the same power, the front end of the automobile is difficult to compress enough space to arrange a larger radiator, when the airflow of the traditional automobile electronic fan advances on the surface of a fan cover, the airflow speed is continuously reduced due to the friction of the inner surface of the air cover, so that turbulence and even airflow separation can be generated, and the flow separation can cause a large amount of turbulence and eddy, so that the pressure loss and the resistance can be increased, and the heat dissipation performance of the electronic fan of the traditional common automobile can hardly meet the cooling and heat dissipation requirements of the hydrogen energy automobile.
Disclosure of Invention
In view of this, in order to solve the problem of insufficient cooling and heat dissipation performance of the hydrogen-powered vehicle, embodiments of the present invention provide a high-low pressure air flow hybrid electronic fan for a hydrogen-powered vehicle.
The embodiment of the invention provides a high-low pressure air flow mixed electronic fan for a hydrogen energy automobile, which comprises:
the automobile electronic fan is arranged in an automobile cabin;
and the high-pressure airflow channel is used for allowing high-pressure airflow to pass through, the sectional area of the high-pressure airflow channel is gradually reduced along the airflow direction, the tail end of the high-pressure airflow channel extends to the rear part of the automobile electronic fan, the high-pressure airflow channel inputs high-pressure airflow to the rear part of the automobile electronic fan, and the high-pressure airflow surrounds the rear part of the automobile electronic fan and flows backwards, so that the friction loss is reduced, and the airflow velocity at the rear part of the automobile electronic fan is improved.
Furthermore, the part of the high-pressure airflow channel extending to the rear part of the automobile electronic fan is an air outlet section, and an air outlet of a shutter structure is arranged on the side wall of the air outlet section, which is close to one side of the rear part of the automobile electronic fan.
Further, the air outlet is a gap inclined towards the axis of the automobile electronic fan along the flowing direction of the high-pressure air flow.
Furthermore, a wind shield is arranged behind the automobile electronic fan, the air outlet section is arranged on the surface of the wind shield, and the air outlet penetrates through the surface of the wind shield.
Further, the beginning of the high-pressure air flow channel extends to the cabin cover or the cabin bottom of the automobile cabin.
The technical scheme provided by the embodiment of the invention has the following beneficial effects: according to the high-low pressure air flow mixed electronic fan for the hydrogen energy automobile, the boundary layer on the inner surface of the air protection cover is replaced by the high-pressure air flow, so that the friction loss is reduced, the air flow speed of the fan near the inner wall of the air protection cover is improved, the flow of the fan is improved, the integral heat exchange quantity of a radiator is effectively improved, the heat radiation performance is improved, and the heat radiation requirement of the hydrogen energy automobile is met.
Drawings
FIG. 1 is a schematic diagram of a high-low pressure air flow hybrid electronic fan for a hydrogen powered vehicle according to the present invention;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
In the figure, 1-a high-pressure airflow channel, 2-an automotive electronic fan, 3-a wind protection cover, 4-a fuel cell radiator, 5-an air outlet section, 6-an air outlet and 7-a wind mixing area.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a high-low pressure air flow hybrid electronic fan for a hydrogen-powered vehicle, including a vehicle electronic fan 2 and a high-pressure air flow channel 1.
Specifically, the automotive electronic fan 2 is disposed in an automobile cabin of a hydrogen energy automobile, and the automotive electronic fan 2 is not substantially different from an automotive electronic fan of an existing gasoline automobile, and will not be described in detail here.
The high-pressure airflow channel 1 is used for high-pressure airflow to pass through, namely external air is introduced through the high-pressure airflow channel 1 to form high-pressure airflow during the running process of a hydrogen energy automobile. Here, the sectional area of the high-pressure airflow channel 1 is gradually reduced along the airflow direction, and as the sectional area of the high-pressure airflow channel 1 is reduced, the airflow velocity in the high-pressure airflow channel 1 is gradually increased, and the high-pressure airflow is continuously formed.
Generally, the initial end of the high-pressure airflow channel 1 extends to a cabin cover or a cabin bottom of an automobile cabin, that is, the initial end of the high-pressure airflow channel 1 is arranged at the front part of the hydrogen energy automobile, so that external air enters the high-pressure airflow channel 1 to form airflow during the running process of the hydrogen energy automobile.
The tail end of the high-pressure airflow channel 1 extends to the rear part of the automobile electronic fan 2, the high-pressure airflow channel 1 inputs high-pressure airflow to the rear part of the automobile electronic fan 2, and the boundary layer of the inner surface of the original wind shield is replaced near the wind mixing area 7, so that the friction loss is reduced, and the airflow speed of the fan near the inner wall of the wind shield is improved.
Referring to fig. 2, an arrow in the figure indicates a flow direction of the high-pressure and low-pressure mixed airflow, a portion of the high-pressure airflow channel 1 extending to the rear portion of the automotive electronic fan 2 is an air outlet section 5, and an air outlet 6 of a louver structure is disposed on a side wall of the air outlet section 5 close to one side of the rear portion of the automotive electronic fan 2. The automobile electronic fan is characterized in that a fan cover 3 is arranged behind the automobile electronic fan 2, the air outlet section 5 is arranged on the surface of the fan cover 3, and the air outlet 6 penetrates through the surface of the fan cover 3. The air outlet 6 is a gap inclined towards the axis of the automotive electronic fan 2 along the flowing direction of the high-pressure airflow, and the inclined gap simultaneously penetrates through the high-pressure airflow channel 1 and the surface of the wind shield 3. Therefore, the high-pressure airflow in the air outlet section 5 flows out from the air outlet 6 to break the boundary layer of the original airflow on the inner surface of the wind protection cover 3, the friction between the original fan airflow and the inner surface of the wind protection cover 3 is eliminated, then the high-pressure airflow can flow towards the rear of the wind protection cover 3 along with the inner wall of the wind protection cover 3, and the original fan airflow is accelerated by high-pressure jet due to the action of viscous force.
In addition, in this embodiment, the fuel cell radiator 4 is arranged in front of the automotive electronic fan, and compared with the conventional automotive electronic fan, the flow rate of the automotive electronic fan 2 in this embodiment is increased, and the heat exchange efficiency of the fuel cell radiator 4 is effectively improved.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
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 (5)
1. The utility model provides a high low pressure air current mixes electronic fan for hydrogen energy car which characterized in that includes:
the automobile electronic fan is arranged in an automobile cabin;
and the high-pressure airflow channel is used for accelerating airflow, the sectional area of the high-pressure airflow channel is gradually reduced along the airflow direction, the tail end of the high-pressure airflow channel extends to the rear part of the automobile electronic fan, the high-pressure airflow channel inputs high-pressure airflow to the rear part of the automobile electronic fan, and the high-pressure airflow surrounds the rear part of the automobile electronic fan and flows backwards to increase the airflow velocity behind the automobile electronic fan.
2. The high-low pressure air flow mixing electronic fan for the hydrogen energy automobile as claimed in claim 1, wherein: the part of the high-pressure airflow channel extending to the rear part of the automobile electronic fan is an air outlet section, and an air outlet of a shutter structure is arranged on the side wall of the air outlet section, which is close to one side of the rear part of the automobile electronic fan.
3. The high-low pressure air flow mixing electronic fan for the hydrogen energy automobile as claimed in claim 2, characterized in that: the air outlet is a gap which inclines towards the axis of the automobile electronic fan along the flowing direction of the high-pressure air flow.
4. The high-low pressure air flow mixing electronic fan for the hydrogen energy automobile as claimed in claim 2, characterized in that: the automobile electronic fan is characterized in that a fan cover is arranged behind the automobile electronic fan, the air outlet section is arranged on the surface of the fan cover, and the air outlet penetrates through the surface of the fan cover.
5. The high-low pressure air flow mixing electronic fan for the hydrogen energy automobile as claimed in claim 1, wherein: the starting end of the high-pressure airflow channel extends to the cabin cover or the cabin bottom of the automobile cabin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010941797.0A CN112253500A (en) | 2020-09-09 | 2020-09-09 | High-low pressure air flow mixed electronic fan for hydrogen energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010941797.0A CN112253500A (en) | 2020-09-09 | 2020-09-09 | High-low pressure air flow mixed electronic fan for hydrogen energy automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112253500A true CN112253500A (en) | 2021-01-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010941797.0A Pending CN112253500A (en) | 2020-09-09 | 2020-09-09 | High-low pressure air flow mixed electronic fan for hydrogen energy automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112253500A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3937192A (en) * | 1974-09-03 | 1976-02-10 | General Motors Corporation | Ejector fan shroud arrangement |
| US4104993A (en) * | 1975-10-30 | 1978-08-08 | Societe Anonyme De Vehicules Industriels Et D'equipements Mecaniques Saviem | Engine cooling systems |
| US5881685A (en) * | 1996-01-16 | 1999-03-16 | Board Of Trustees Operating Michigan State University | Fan shroud with integral air supply |
-
2020
- 2020-09-09 CN CN202010941797.0A patent/CN112253500A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3937192A (en) * | 1974-09-03 | 1976-02-10 | General Motors Corporation | Ejector fan shroud arrangement |
| US4104993A (en) * | 1975-10-30 | 1978-08-08 | Societe Anonyme De Vehicules Industriels Et D'equipements Mecaniques Saviem | Engine cooling systems |
| US5881685A (en) * | 1996-01-16 | 1999-03-16 | Board Of Trustees Operating Michigan State University | Fan shroud with integral air supply |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210122 |