CN214533144U - Cooling body for injection valve for vehicle exhaust gas treatment, injection device and vehicle exhaust gas treatment system - Google Patents
Cooling body for injection valve for vehicle exhaust gas treatment, injection device and vehicle exhaust gas treatment system Download PDFInfo
- Publication number
- CN214533144U CN214533144U CN202120586707.0U CN202120586707U CN214533144U CN 214533144 U CN214533144 U CN 214533144U CN 202120586707 U CN202120586707 U CN 202120586707U CN 214533144 U CN214533144 U CN 214533144U
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- CN
- China
- Prior art keywords
- injection valve
- cooling body
- cooling
- vehicle exhaust
- heat dissipation
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- 238000002347 injection Methods 0.000 title claims abstract description 73
- 239000007924 injection Substances 0.000 title claims abstract description 73
- 238000001816 cooling Methods 0.000 title claims abstract description 67
- 230000017525 heat dissipation Effects 0.000 claims abstract description 30
- 239000007789 gas Substances 0.000 claims abstract description 16
- 239000000112 cooling gas Substances 0.000 claims abstract description 4
- 238000001746 injection moulding Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Abstract
The utility model relates to a cooling body (1) that is used for injection valve (20) that vehicle exhaust handled usefulness, cooling body (1) includes: a body (2) provided with an inner cavity (4) for housing an injection valve (20), the inner cavity (4) having an inlet (5) for inserting the injection valve (20) and an outlet (6) for the injection valve (20) to be ejected outwards; and a heat dissipation structure (3) disposed around an outer surface of the body (2) to form a cooling gas passage. The utility model discloses still relate to an injection apparatus and vehicle exhaust processing system. The utility model discloses an use gas cooling to replace traditional cooling water cooling, can be when satisfying injection valve temperature requirement, the leakage risk of cooling water runner and interface is avoided to the pipeline and the control design of saving the cooling water.
Description
Technical Field
The utility model relates to a cooling body that is used for the injection valve that vehicle exhaust handled usefulness, including the injection apparatus of this cooling body and including this injection apparatus's vehicle exhaust processing system.
Background
In existing diesel vehicle exhaust after-treatment systems, a hydrocarbon injection system is usually added. The hydrocarbon injection system is used for injecting diesel oil into the exhaust pipe through an injection valve so as to perform a regeneration operation. However, since the injection valve is mounted to the offgas duct, and the temperature of the offgas duct and the offgas is as high as 400 to 500 degrees celsius or even higher, the heat of the offgas duct is transferred to the injection valve to cause the temperature of the injection valve to increase, which affects the performance. Also, an injection valve for injecting a reducing agent into an exhaust pipe is also faced with a problem of temperature rise.
The injection valve is generally cooled by providing a cooling water line to limit the performance degradation of the injection valve. However, a long cooling line is required for cooling the injector and is controlled accordingly, which considerably increases the cost of the vehicle. For this reason, there is a need for an improved injection valve cooling arrangement.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned defects of the prior art, the utility model provides a cooling body for injection valve that vehicle exhaust handles and uses that structure is simplified to utilize the forced air cooling to cool off the injection valve.
According to an aspect of the present invention, there is provided a cooling body for an injection valve for vehicle exhaust gas treatment, the cooling body comprising: a body provided with an internal cavity for housing an injection valve, the internal cavity having an inlet for insertion of the injection valve and an outlet for outward injection of the injection valve; and a heat dissipation structure disposed around an outer surface of the body to form a cooling gas passage.
According to one embodiment, the heat dissipation structure is a plurality of heat dissipation ribs arranged at intervals from each other.
According to one embodiment, the heat dissipating rib is formed in a ring shape extending around the body in a circumferential direction of the body.
According to one embodiment, the heat dissipation structure is formed in a tapered shape.
According to one embodiment, the heat dissipation structure is formed in a spiral shape extending in a longitudinal direction of the body or in a labyrinth shape.
According to one embodiment, the body is provided with a fixing portion at an end into which the injection valve is inserted for fixing the injection valve and/or the body is provided with a mounting portion at an end at which the outlet is provided for mounting to a vehicle exhaust pipe.
According to one embodiment, the mounting portion forms part of a heat dissipation structure.
According to one embodiment, the cooling body is formed in one piece by injection moulding.
According to another aspect of the present invention, there is provided an injection apparatus comprising the aforementioned cooling body and an injection valve fixed in the cooling body for vehicle exhaust gas treatment, wherein a housing of the injection valve is made of metal and is in contact with an inner cavity of the cooling body.
According to another aspect of the present invention, there is provided a vehicle exhaust gas treatment system comprising an exhaust pipe of a vehicle and the aforementioned injection device, wherein the exhaust pipe is mounted to the cooling body.
Compare traditional water-cooling design, the utility model discloses can be when satisfying injection valve temperature requirement, the pipeline and the control design of saving the cooling water avoid the leakage risk of cooling water pipeline and interface.
Drawings
Fig. 1 is a schematic perspective view of a cooling body according to an embodiment of the present invention;
FIG. 2 is a longitudinal cross-sectional view of the cooling body shown in FIG. 1;
fig. 3 is a schematic perspective view of a spray device according to an embodiment of the present invention; and
fig. 4 is a longitudinal sectional view of the spray device shown in fig. 3.
Detailed Description
Exemplary embodiments according to the present invention are described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic perspective view of a cooling body 1 according to an embodiment of the present invention. Fig. 2 is a longitudinal sectional view of the heat sink 1 shown in fig. 1.
As shown in fig. 2, the cooling body 1 for the injection valve 20 (shown in fig. 4) includes a body 2 and a heat dissipation structure 3 provided on the body 2. The body 2 comprises an inner cavity 4 for accommodating the injection valve 20, which inner cavity 4 extends in the longitudinal direction of the body 2 and is shaped to fit the outer shape of the injection valve 20. An inlet 5 communicating with the cavity 4 is provided at one longitudinal end of the body 2 to insert the injection valve 20 into the cavity 4, and an outlet 6 communicating with the cavity 4 is provided at the other longitudinal end of the body 2 to allow the injection valve 20 to be injected from the outlet 6.
The heat dissipation structure 3 is disposed around the outer surface of the body 2 to form a cooling gas passage. The heat dissipating structure 3 is made of a heat conductive material such as aluminum and is configured to have a large gas (e.g., air) contact area to remove heat from the cooling body 1 during the gas flow through the heat dissipating structure 3, enhancing the heat dissipating efficiency and capacity of the cooling body 1.
Fig. 2 shows that the heat dissipation structure 3 is formed in the form of a plurality of heat dissipation ribs 7. The plurality of heat dissipating ribs 7 are spaced apart from each other in the longitudinal direction of the heat sink 1 and arranged in parallel, and heat dissipating spaces 18 for allowing gas to flow through are formed between adjacent heat dissipating ribs 7. As shown in fig. 1 and 2, the heat dissipation rib 7 may be formed in a ring shape extending around the circumference of the cooling body 1. The heat dissipating ribs 7 may have a cross section of various shapes, such as a polygonal shape, for example, a rectangular shape, a circular shape, an oval shape, or other irregular shape, as long as heat dissipation to the cooling body 1 is achieved. In order to enhance the impact effect of the air flow on the surface of the heat dissipating ribs 7, the opposite upper and lower surfaces 71, 72 of the heat dissipating ribs 7 may be disposed at an angle inclined with respect to the lateral direction of the cooling body 1. In order to make the air flow more smoothly through the heat dissipation spaces 18 between the heat dissipation ribs 7, the diameter of each heat dissipation rib 7 is gradually increased in a direction toward the outlet 6, so that the heat dissipation structure 3 is formed in a tapered shape, such as a truncated cone.
In addition, the heat dissipation ribs 7 may be arranged in other manners and shapes according to the use scene and the structural strength or other requirements. For example, the heat dissipating ribs 7 may not be arranged parallel to each other but at an angle with respect to each other, the heat dissipating ribs 7 may be arranged to extend in the longitudinal direction of the cooling body 1, such as parallel to the longitudinal direction of the cooling body 1 or in a spiral shape, and the heat dissipating ribs 7 may be arranged in a labyrinth shape, thereby extending the gas flow path and enhancing the heat dissipating effect.
In order to fix the injection valve 20 in the interior 4 of the heat sink 1, a fixing portion 8, such as a fixing lug, is provided at one longitudinal end of the heat sink 1, and after the injection valve 20 is inserted into the interior 4 of the heat sink 1, a fastening element 9 (shown in fig. 4), such as a screw, can be screwed into the fixing portion 8 to fix the injection valve 20 in place. However, instead of a fixing stud, the heat sink 1 may also be provided with other types of fixing portions 8 for the injection valve 20, such as other detachable structures, for example, clamps, snap-fit structures, screw-fit structures, etc.
In order to mount the cooling body 1 to the exhaust pipe of the vehicle, the cooling body 1 is provided at the other end in the longitudinal direction with a mounting portion 10, and as shown in fig. 1, the mounting portion 10 may be formed in the form of a flange extending to opposite sides in the lateral direction at the other end in the longitudinal direction of the cooling body 1. In the mounting portion 10, a mounting hole 11 is provided to mount the cooling body 1 to the exhaust pipe with a fastener, and in order to avoid interference with the fastener in the mounting hole 11, the heat dissipating structure 3 has an inwardly recessed portion 17 at a position corresponding to the fastener. It will be appreciated by those skilled in the art that other forms of mounting portion 10, such as a clamp, snap-fit arrangement, etc., may be employed so long as the cooling body 1 can be mounted to the exhaust pipe. In addition to being used for mounting the cooling body 1 to the exhaust pipe, the mounting portion 10 may also be used as part of the heat dissipating structure 3. That is, the mounting portion 10 is also made of a thermally conductive material such as aluminum. The mounting portion 10 may be formed integrally with the heat dissipation structure 3 or may be a portion separate from the heat dissipation structure 3.
It will be appreciated by those skilled in the art that, in addition to the specially provided heat dissipation structure 3 and the above-described mounting portion 10, the remaining portions of the heat sink 1, such as the body 2 and the fixing portion 8, may be made of a heat conductive material, such as aluminum, so that heat dissipation is achieved. The parts of the cooling body 1 may be formed separately from each other, however, the cooling body 1 may also be formed integrally by injection molding or the like.
Fig. 3 and 4 show a perspective view and a cross-sectional view, respectively, of an injection device with an injection valve 20 fixed in a cooling body 1. The injection valve 20 may be part of a hydrocarbon injection module in a diesel vehicle exhaust treatment system configured to inject fuel into the exhaust pipe for regeneration operations. However, the injection valve 20 may be configured to inject a reducing agent into the exhaust pipe to detoxify the exhaust gas. In order to increase the heat dissipation capacity, the housing of the injection valve 20 is made of metal, which is in contact with the interior 4 of the heat sink 1, so that heat can be dissipated directly by means of the heat sink 1.
As shown in fig. 4, the injection valve 20 is inserted into the cavity 4 of the cooling body 1, and a fixing cap 12 is provided at one end of the cooling body 1 in the longitudinal direction to be connected to the fixing portion 8 of the cooling body 1 to fix the injection valve 20. The stationary cover 12 is formed in a substantially T-shape with both lateral side portions 13 thereof abutting against the stationary portions 8 of the cooling body 1 to attach the stationary cover 12 to the cooling body 1 with fasteners 9, and longitudinally extending portions 14 of the stationary cover 12 longitudinally extend from both lateral side portions 13 to accommodate a portion of the injection valve 20 and form a fluid passage 15 therein. A pressing member 16, such as a spring, is provided between the injection valve 20 and the stationary cover 12 to apply a biasing force to the injection valve 20 to achieve a firm positioning. Similar to the heat sink 1, the fixing cover 12 may also be made of a heat conductive material such as aluminum to enhance heat dissipation.
The injection valve 20 may also incorporate a metering unit (not shown) for metering the injection quantity, thereby simplifying the construction of the exhaust gas treatment system.
In the vehicle exhaust gas treatment system according to the present invention, the cooling body 1 having the injection valve 20 fixed therein is mounted as an injection device to the exhaust pipe to inject the fuel or the reducing agent or the like into the exhaust pipe.
When the vehicle is traveling, air from the outside flows through the outer surface of the cooling body 1, and exchanges heat with the cooling body 1 by contacting with the heat dissipation structure 3 or the like, taking away heat of the cooling body 1, and preventing the temperature of the cooling body 1 from being too high, thereby preventing heat from being transferred from the cooling body 1 to the injection valve 20 to affect the performance of the injection valve 20.
Compare traditional water-cooling design, according to the utility model discloses an air-cooled design can be when satisfying injection valve 20 temperature requirement, and the leakage risk of cooling water runner and interface is avoided in the pipeline and the control design of saving the cooling water.
Although specific embodiments of the present invention have been described in detail herein, they are merely exemplary and should not be construed as limiting the scope of the invention. Furthermore, it should be clear to a person skilled in the art that the embodiments described in this specification can be combined with each other. Various substitutions, modifications and combinations are contemplated without departing from the spirit and scope of the present invention.
Claims (10)
1. A cooling body (1) for an injection valve (20) for the treatment of vehicle exhaust gases, characterized in that the cooling body (1) comprises:
a body (2) provided with an inner cavity (4) for housing an injection valve (20), the inner cavity (4) having an inlet (5) for inserting the injection valve (20) and an outlet (6) for the injection valve (20) to be ejected outwards; and
a heat dissipating structure (3) disposed around an outer surface of the body (2) to form a cooling gas passage.
2. Cooling body (1) according to claim 1, characterized in that the heat dissipation structure (3) is a plurality of heat dissipation ribs (7) arranged at a distance from each other.
3. The cooling body (1) according to claim 2, characterized in that the heat dissipation rib (7) is formed in a ring shape extending around the body (2) in the circumferential direction of the body (2).
4. Cooling body (1) according to claim 2, characterized in that the heat dissipation structure (3) is formed in a tapering shape.
5. Cooling body (1) according to claim 1, characterized in that the heat dissipation structure (3) is formed as a spiral extending in the longitudinal direction of the body (2) or as a labyrinth.
6. Cooling body (1) according to one of the claims 1 to 5, characterized in that the body (2) is provided with a fixing part (8) for fixing the injection valve (20) at the end where the injection valve (20) is inserted and/or the body (2) is provided with a mounting part (10) for mounting to a vehicle exhaust pipe at the end where the outlet is provided.
7. Cooling body (1) according to claim 6, characterized in that the mounting portion (10) constitutes a part of a heat dissipating structure (3).
8. Cooling body (1) according to one of the claims 1 to 5, characterized in that the cooling body (1) is formed in one piece by injection moulding.
9. Injection device, characterized in that it comprises a cooling body (1) according to any one of claims 1 to 8 and an injection valve (20) fixed inside the cooling body (1) for the treatment of vehicle exhaust gases, the housing of said injection valve (20) being made of metal and being in contact with the internal cavity (4) of the cooling body (1).
10. A vehicle exhaust gas treatment system, characterized in that it comprises an exhaust pipe of a vehicle and a spray device according to claim 9, the cooling body (1) being mounted to the exhaust pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120586707.0U CN214533144U (en) | 2021-03-23 | 2021-03-23 | Cooling body for injection valve for vehicle exhaust gas treatment, injection device and vehicle exhaust gas treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120586707.0U CN214533144U (en) | 2021-03-23 | 2021-03-23 | Cooling body for injection valve for vehicle exhaust gas treatment, injection device and vehicle exhaust gas treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214533144U true CN214533144U (en) | 2021-10-29 |
Family
ID=78264819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120586707.0U Active CN214533144U (en) | 2021-03-23 | 2021-03-23 | Cooling body for injection valve for vehicle exhaust gas treatment, injection device and vehicle exhaust gas treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214533144U (en) |
-
2021
- 2021-03-23 CN CN202120586707.0U patent/CN214533144U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |