CN209743066U - Low-pressure EGR cooler with filter screen - Google Patents
Low-pressure EGR cooler with filter screen Download PDFInfo
- Publication number
- CN209743066U CN209743066U CN201920433294.5U CN201920433294U CN209743066U CN 209743066 U CN209743066 U CN 209743066U CN 201920433294 U CN201920433294 U CN 201920433294U CN 209743066 U CN209743066 U CN 209743066U
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- flange
- filter screen
- gasket
- pressure egr
- cooler
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Abstract
The utility model discloses a take low pressure EGR cooler of filter screen, including cooler air chamber, flange and filter screen, the flange with the cooler body is connected, be equipped with on the flange and be used for supporting the step hole of filter screen, the filter screen welding is in the step hole of flange, be equipped with on the flange and be used for pushing down the packing ring of filter screen, the beneficial effects of the utility model are that: the molding and assembling process is simple, the cost is low, and the brazing filler metal can be brazed with the cooler assembly; the integral connection strength is higher, the filter screen does not need to be bent for multiple times, and the structural strength of a final product can be effectively improved.
Description
Technical Field
The utility model relates to a vehicle engine technical field especially relates to a take low pressure EGR cooler of filter screen.
Background
low pressure EGR coolers are becoming more widely used in engines, particularly gasoline engines, and a screen is an essential configuration for the cooler to prevent carbon deposits from entering the engine intake air and returning to the furnace, thereby affecting engine power performance and life.
The existing scheme is to integrate the filter screen on the gasket, and the gasket molding assembly process has poor feasibility and high cost, and by adopting the scheme, the connection strength between the filter screen and the gasket is poor, and the filter screen is easy to break in a poor working environment of the EGR cooler.
Disclosure of Invention
The low pressure EGR cooler with the filter screen is integrated on the flange and fixedly welded with the filter screen and the flange in a brazing mode.
The technical scheme adopted by the invention is as follows: the utility model provides a take low pressure EGR cooler of filter screen, includes cooler air chamber, flange and filter screen, the flange with the cooler air chamber is connected, be equipped with on the flange and be used for supporting the step hole of filter screen, filter screen fixed connection be in the step hole of flange, be equipped with on the flange and be used for pushing down the packing ring of filter screen.
Preferably, the flange is provided with a plurality of first mounting holes, and the first mounting holes are uniformly distributed along the circumferential direction of the flange.
Preferably, the flange further comprises a gasket, a through hole with the same inner diameter as the stepped hole is formed in the middle of the gasket, and a second mounting hole matched with the first mounting hole of the flange is formed in the gasket.
Preferably, the gasket is provided with a hook, the hook fixes the gasket on the flange, and the gasket is mounted on the upper surface of the gasket.
After the structure more than adopting, compared with the prior art, the utility model has the following advantages:
(1) The forming and assembling process is simple, and the cost is lower.
(2) The flange is provided with a step surface for supporting and fixing the filter screen, and then the filter screen is pressed through a gasket which is in interference fit with the step hole on the flange surface, so that the sealing performance of the filter screen is improved, and further protection is provided during installation and use.
(3) The integral connection strength is high, the filter screen does not need to be bent for multiple times, and the structural strength of a final product can be effectively improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1, a cooler air chamber, 2, a flange, 3, a filter screen, 2.1, a step hole, 2.2, a first mounting hole, 4, a gasket, 5, a gasket, 5.1, a through hole, 5.2, a second mounting hole, 5.3 and a hook are arranged.
Detailed Description
The principles and features of the present invention are described below, with the examples being given only for the purpose of illustration and not for the purpose of limiting the scope of the invention.
As shown in fig. 1, a low pressure EGR cooler with filter screen, includes cooler air chamber 1, flange 2 and filter screen 3, flange 2 with cooler air chamber 1 is connected, be equipped with on flange 2 and be used for supporting filter screen 3's step hole 2.1, filter screen 3 fixed connection be in flange 2's step hole 2.1, be equipped with on flange 2 and be used for pushing down filter screen 3's packing ring 4.
Specifically, the welding flux is laid on the step surface in the step hole 2.1, after the filter screen 3 is placed into the flange 2, the step surface in the step hole 5.1 can support the edge of the filter screen 3, then the filter screen 3 and the flange 2 are welded together in a brazing mode, and the step hole 2.1 is formed in the flange 2, so that when the filter screen 3 is arranged in the flange, the screen surface of the filter screen 3 has a certain radian, the effective filtering area of the filter screen 3 can be increased, and the damage of impurities to the cooler is reduced.
After the filter screen 3 is placed in the stepped hole 2.1, the filter screen is pressed by a gasket 4 which is in interference fit with the stepped hole in the flange, so that the filter screen 3 is kept fixed during the brazing process, and further protection can be provided in use to prevent the filter screen 3 from loosening.
Preferably, the gasket 4 and the stepped hole 2.1 are fixed through interference fit press fitting or clearance fit spot welding, and the gasket 4 plays a sealing role in the process of filtering waste gas by the filter screen.
After the filter screen 3 is welded, the flange 2 is fixedly connected with the gasket 5, the gasket 5 is provided with a second mounting hole 5.2 matched with the first mounting hole 2.2 of the flange 2, the second mounting hole 5.2 on the gasket 5 is aligned with the first mounting hole 2.2 on the flange 2, and then the gasket 5 is fixedly connected on the flange 2.
Specifically, the gasket 5 is provided with a hook 5.3, and the hook 5.3 is fastened on the flange 2 for fixing the gasket 5, i.e. the gasket 5 is detachably fixed on the flange.
Specifically, the middle position of the gasket 5 is provided with a through hole 5.1 with the same inner diameter as the flange step hole 2.1, when exhaust gas passes through, the exhaust gas can pass through the through hole and impurities can be left in the filter screen 3, the impurities cannot enter an air inlet loop of the engine, and the power performance and the service life of the engine are improved. At the same time, the gasket 5 can increase the overall sealing.
While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive of other embodiments, and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed above, or as otherwise known in the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (4)
1. The utility model provides a take low pressure EGR cooler of filter screen, includes cooler air chamber (1), flange (2) and filter screen (3), flange (2) with cooler air chamber (1) is connected its characterized in that: be equipped with on flange (2) and be used for supporting step hole (2.1) of filter screen (3), filter screen (3) fixed connection be in step hole (2.1) of flange (2), be equipped with on flange (2) and be used for pushing down packing ring (4) of filter screen (3).
2. The low pressure EGR cooler with screen of claim 1, wherein: the flange (2) is provided with a plurality of first mounting holes (2.2), and the first mounting holes (2.2) are uniformly distributed along the circumferential direction of the flange (2).
3. The low pressure EGR cooler with screen of claim 2, wherein: still include gasket (5), the intermediate position of gasket (5) be equipped with through-hole (5.1) that the step hole (2.1) internal diameter is the same, be equipped with on gasket (5) with second mounting hole (5.2) of first mounting hole (2.2) looks adaptation of flange (2).
4. The low pressure EGR cooler with screen of claim 3, wherein: be equipped with couple (5.3) on gasket (5), couple (5.3) are fixed gasket (5) on flange (2), gasket (5) are installed the upper surface of packing ring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920433294.5U CN209743066U (en) | 2019-04-02 | 2019-04-02 | Low-pressure EGR cooler with filter screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920433294.5U CN209743066U (en) | 2019-04-02 | 2019-04-02 | Low-pressure EGR cooler with filter screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209743066U true CN209743066U (en) | 2019-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920433294.5U Active CN209743066U (en) | 2019-04-02 | 2019-04-02 | Low-pressure EGR cooler with filter screen |
Country Status (1)
| Country | Link |
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| CN (1) | CN209743066U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412671A (en) * | 2020-12-04 | 2021-02-26 | 天津特瑞捷动力科技有限公司 | EGR sealing gasket with filtering function and application thereof |
-
2019
- 2019-04-02 CN CN201920433294.5U patent/CN209743066U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412671A (en) * | 2020-12-04 | 2021-02-26 | 天津特瑞捷动力科技有限公司 | EGR sealing gasket with filtering function and application thereof |
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