EXHAUST GAS AFTER-TREATMENT MIXING DEVICE AND PACKAGE THEREFOR
First Claim
1. An exhaust gas after-treatment mixing device, comprising:
- a casing comprising a mounting seat for mounting a urea injector to spray urea; and
a mixing assembly located in the casing, the urea being sprayed to the mixing assembly, the mixing assembly comprising;
a first plate having a first inlet and a second inlet respectively located at two sides of the first plate;
a second plate; and
a mixer located between the first plate and the second plate, wherein;
the mixer comprises a first space in communication with the first inlet, a second space in communication with the second inlet, and a third space located between the first space and the second space, a top portion of the first space being in communication with the third space, and a top portion of the second space being also in communication with the third space;
whereinthe mixer comprises a first raised portion protruding from the bottom into the third space and a second raised portion located below the first raised portion, so that a fourth space is formed between the first raised portion and the second raised portion;
whereinthe first raised portion comprises a first side and a second side, the first side comprises a plurality of first perforations to communicate the third space with the fourth space, and the second side comprises a plurality of second perforations to communicate the third space with the fourth space;
whereinthe second plate is provided with an outlet in communication with the fourth space.
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Accused Products
Abstract
The present application discloses an exhaust gas after-treatment mixing device including a first plate, a second plate and a mixer. The mixer includes a first space, a second space and a third space located between the first space and the second space. Top portions of the first space and the second space are in communication with the third space. The mixer includes a first raised portion protruding into the third space and a second raised portion located below the first raised portion. A fourth space is formed between the first raised portion and the second raised portion. As a result, the distance and time of urea evaporation is increased and the mixing uniformity is improved. Besides, a package with the exhaust gas after-treatment mixing device is also provided.
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Citations
20 Claims
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1. An exhaust gas after-treatment mixing device, comprising:
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a casing comprising a mounting seat for mounting a urea injector to spray urea; and a mixing assembly located in the casing, the urea being sprayed to the mixing assembly, the mixing assembly comprising; a first plate having a first inlet and a second inlet respectively located at two sides of the first plate; a second plate; and a mixer located between the first plate and the second plate, wherein; the mixer comprises a first space in communication with the first inlet, a second space in communication with the second inlet, and a third space located between the first space and the second space, a top portion of the first space being in communication with the third space, and a top portion of the second space being also in communication with the third space;
whereinthe mixer comprises a first raised portion protruding from the bottom into the third space and a second raised portion located below the first raised portion, so that a fourth space is formed between the first raised portion and the second raised portion;
whereinthe first raised portion comprises a first side and a second side, the first side comprises a plurality of first perforations to communicate the third space with the fourth space, and the second side comprises a plurality of second perforations to communicate the third space with the fourth space;
whereinthe second plate is provided with an outlet in communication with the fourth space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An exhaust gas after-treatment package comprising a first after-treatment carrier assembly, a second after-treatment carrier assembly downstream of the first after-treatment carrier assembly, and a third after-treatment carrier assembly downstream of the second after-treatment carrier assembly, wherein the exhaust gas after-treatment package further comprises an exhaust gas after-treatment mixing device located between the second after-treatment carrier assembly and the third after-treatment carrier assembly, and the exhaust gas after-treatment mixing device comprises:
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a casing comprising a mounting seat for mounting a urea injector to spray urea; and a mixing assembly located in the casing, the urea being sprayed to the mixing assembly, the mixing assembly comprising; a first plate having a first inlet and a second inlet respectively located at two sides of the first plate; a second plate; and a mixer located between the first plate and the second plate, wherein; the mixer comprises a first space in communication with the first inlet, a second space in communication with the second inlet, and a third space located between the first space and the second space, a top portion of the first space being in communication with the third space, and a top portion of the second space being also in communication with the third space;
whereinthe mixer comprises a first raised portion protruding from the bottom into the third space and a second raised portion located below the first raised portion, so that a fourth space is formed between the first raised portion and the second raised portion;
whereinthe first raised portion comprises a first side and a second side, the first side comprises a plurality of first perforations to communicate the third space with the fourth space, and the second side comprises a plurality of second perforations to communicate the third space with the fourth space;
whereinthe second plate is provided with an outlet in communication with the fourth space. - View Dependent Claims (18, 19, 20)
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Specification