SPRAY NOZZLE, AND COMBUSTION DEVICE HAVING SPRAY NOZZLE

• Main Authors: OKAZAKI HIROFUMI, ORII AKIHITO, OCHI KENICHI, OKIMOTO HIDEO, KURAMASHI KOJI
• Format: Patent
• Language: English
• Published: 27.07.2018
• Subjects: AIR; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; ATOMISING APPARATUS; BLASTING; BURNERS; COMBUSTION APPARATUS; COMBUSTION ENGINES; COMBUSTION PROCESSES; FEEDING FUEL TO COMBUSTION APPARATUS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; METHODSOR APPARATUS FOR COMBUSTION USING FLUID FUELOR SOLID FUEL SUSPENDED IN; NOZZLES; PERFORMING OPERATIONS; SPRAYING APPARATUS; SPRAYING OR ATOMISING IN GENERAL; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; TRANSPORTING; WEAPONS

SPRAY NOZZLE, AND COMBUSTION DEVICE HAVING SPRAY NOZZLE IN A COMBUSTION DEVICE WHICH SPRAYS LIQUID FUEL AND COMBUSTS IT, AN OBJECT IS TO PROMOTE COMBUSTION REACTION AND IMPROVE COMBUSTION EFFICIENCY, AND SUPPRESS EXHAUSTION OF ASH DUST, CARBON MONOXIDE, NITROGEN OXIDE, BY REDUCING SPRAY PARTICLE DIAMETER AND REDUCING KINETIC MOMENTUM. A SPRAY NOZZLE IS PROVIDED WITH UPPER AND LOWER CHANNELS (28, 29) FROM RESPECTIVE SURFACES, THE TWO CHANNELS FORM A CROSS SHAPE, AND BECOME A FUEL SPRAY HOLE BY COMMUNICATION OF AN INTERSECTING PART (30). A GUIDE MEMBER (23) IS PROVIDED, IN CONTACT WITH THE UPSTREAM-SIDE CHANNEL (28), IN A POSITION OVERLAPPED WITH THE INTERSECTING PART (FUEL SPRAY HOLE) (30) WITH RESPECT TO THE SPRAY DIRECTION OF THE SPRAY NOZZLE. SPRAY FLUID (LIQUID FUEL) IS BRANCHED WITH THE GUIDE MEMBER (23) FROM THE FUEL FLUID DUCT (21) CONNECTED TO THE SPRAY NOZZLE, PASSES THROUGH THE UPSTREAM-SIDE CHANNEL (28), TO THE INTERSECTING PART (30), AND IS SPRAYED. THE SPRAY FLUID FORMS OPPOSED FLOWS TOWARD THE INTERSECTING PART (30) IN THE UPSTREAM-SIDE CHANNEL (28) TO COLLIDE WITH EACH OTHER AT AN OBTUSE ANGLE OF 90° OR GREATER, THEN IS SPRAYED FROM THE INTERSECTING PART (30), TO FORM A THIN FAN-SHAPED LIQUID FILM (31). THE LIQUID FILM IS DIVIDED BY A SHEARING FORCE FROM THE PERIPHERAL GAS, ATOMIZED INTO SPRAY PARTICLES (32). (FIGURE 2A)