RU2021103548A - PLANT FOR INTRODUCING LIQUID MEDIUM INTO EXHAUST GASES - Google Patents

Claims (22)

1. Installation (1) for introducing a liquid medium, such as urea, into the exhaust gases of a diesel internal combustion engine, containing: - housing (7, 18) of the mixing chamber, limiting the mixing chamber (21A, 21B) and containing an inlet (4) for exhaust gases for introducing exhaust gases into the mixing chamber (21A, 21B) and an outlet (10) for the mixture to be supplied mixtures of liquid medium and exhaust gases from the mixing chamber (21A, 21B); moreover, the housing (7, 18) of the mixing chamber has a substantially rectangular shape and is formed by the top wall (18A), the end cover (18) and the partition (7), with the inlet (4) for exhaust gases and the outlet (10) for the mixture formed in the partition (7), i.e. the inlet (4) for exhaust gases and the outlet (10) for the mixture are located on one side of the body (7, 18) of the mixing chamber; - a hole (19) for injecting a liquid medium for injecting a liquid medium into the mixing chamber (21A, 21B); - a body (22) for a liquid medium, located inside the body (7, 18) of the mixing chamber and limited by the body (7, 18) of the mixing chamber, moreover, the housing (22) for the liquid medium limits the mixing chamber (21A, 21B), housing (22) for the liquid medium contains an open second side (23) of the housing for the liquid medium, facing the hole (19) for injecting the liquid medium, moreover, the specified open second side (23) of the housing for the liquid medium forms an inlet for the exhaust gases and the liquid medium into the mixing chamber (21A, 21B), moreover, the hole (19) for injecting a liquid medium and the body (22) for a liquid medium are made so as to only allow injection of a liquid medium into the body (22) for a liquid medium, while the outer walls of the body (22) for the liquid medium are at a distance from the inner walls of the body (7, 18) of the mixing chamber, and the inlet (4) for exhaust gases and the body (22) for the liquid medium are made so that during operation create a flow of exhaust gases that do not contain a liquid medium around the body (22) for a liquid medium, moreover, the inlet (4) for exhaust gases and the housing (22) for the liquid medium are made so that during operation they ensure the direction of the flow of exhaust gases that do not contain a liquid medium, created around the housing (22) for the liquid medium, to the open second side ( 23) housing for liquid medium facing the hole (19) for injection of liquid medium, characterized in that the installation (1) further comprises a tubular housing (2) of the diesel particle filter passing through the lower opening (8) of the baffle (7), wherein said lower opening (8) forms an inlet (4) for exhaust gases, wherein said the tubular body (2) of the diesel particle filter has an axis (6) of the body of the diesel particle filter passing perpendicular to the partition (7), the axis (20) of the opening (19) for injecting a liquid medium is perpendicular to the axis (6) of the diesel particle filter, while the distance between the first and second end walls (29, 30) of the liquid medium housing and the partition (7) and the end cover (18), respectively, is from 3 to 8 mm, is from 4 to 6 mm, or is 5 mm. 2. Installation (1) according to claim 1, characterized in that the second end wall of the housing (22) for the liquid medium contains one or more recesses (34), while in these recesses (34) the distance between the second end wall of the housing (22 ) for liquid media and the end cap (18) is enlarged. 3. Installation (1) according to claim 1 or 2, characterized in that the installation (1) additionally comprises a guide plate (9) located above the diesel particle filter housing and surrounded by a liquid medium housing (22), wherein the guide plate (9 ) is connected to the body (22) for the liquid medium, and the axis (20) of the hole (19) for injecting the liquid medium is parallel to the upper wall (13) of the guide plate (9). 4. Installation (1) according to claim 3, characterized in that the first end wall (29) of the housing (22) for liquid medium contains an outlet (31) next to or in communication with the upper opening of the baffle (7), so that the first end wall of the body (22) for the liquid medium is connected to the partition, or the fact that the body (22) for the liquid medium contains protrusions near the outlet of the body (22) for the liquid medium, and the body (22) for the liquid medium is connected to the partition by means of these protrusions. 5. Installation (1) according to claim 3 or 4, characterized in that the partition contains one or more recesses (33), and in these recesses (33) the distance between the partition (7) and the housing (22) for the liquid medium is increased . 6. Installation (1) according to any one of the preceding claims, characterized in that the housing (7, 18) of the mixing chamber has a substantially rectangular shape, and the hole (19) for injecting the liquid medium is formed next to the upper wall (18A) of the housing (7 , 18) of the mixing chamber, and the hole (19) for injecting the liquid medium has an axis (20) of the injection hole parallel to the upper wall (18A) of the housing (7, 18) of the mixing chamber. 7. Installation (1) according to claim 6, characterized in that the housing (22) for the liquid medium comprises an upper wall (26) extending above the hole (19) for injecting the liquid medium. 8. Installation (1) according to any one of the preceding claims, characterized in that the body (22) for the liquid medium comprises a bottom wall (24) extending from the first side wall (27) of the body for the liquid medium partially above the width of the body (7, 18 ) mixing chamber. 9. Installation (1) according to claim 7 or 8, characterized in that the distance between the inner walls of the body (7, 18) of the mixing chamber and the upper wall (26) of the body for the liquid medium and the first side wall (27) is from 3 to 8 mm, is 4 to 6 mm, or is 5 mm.