Patent TW-273591-B (TW)
Title: Arrange and assembly method of the air current field and structure
Inventor: FUH EN-SONG
IPC: F24C15/20
Filed: 1995-01-12
Granted: 1996-04-01
Abstract: Arrange and assembly method of the air current field and structure for a low noise, high pressure smoke suction machine, which comprises of A) Its structure's features include: (1) The upgraded fan: which was composed of two different diameter centrifugal fan rotator and arranged in vertical way with a motor as center. A suction rotator with a smallest diameter without change the amount of air is set on the bottom; while a upgrade rotator with the largest diameter as the space permitted is set on the top. The upgraded fan is surrounded by a rotational pressure magnifier with a suction pipe set on its outlet end. The exit end of the suction pipe has the same direction as the exhaust current. (2) The trapezoid muffler: with trapezoid shape on both side, a upward oil slot on the bottom and a inlet port on the top for the upgraded rotator. A separated plate with inlet port of the suction rotator is set inside the muffler. An acoustic board and wind-guide board are set under this plate and form a downward wind passage between these two boards. The area under the guide board is the buffer zone of the muffler with fixed screw on side plate. (3) The collapsible back: form by a flat plate with bend side on left and right end, which has collapsible strip holes on it and a oil slot on the bottom of this plate. (4) Smoke cover: with a fan-shape as see from side and its legs are circle with radius R. One of legs is the back of the smoke cover. There is a distance between the bottom of the back plate and the center of the circle. This will be the outlet port for suction air. There are several scales plates inside the smoke cover to form the air passage. Above this passage is the suction port while the bottom is the outlet port. B) Arrange and assembly method: Set the muffler as center and put the outlet port separation plate of the upgraded rotator. Put a motor on the center of the outlet port of the upgraded rotator and fixed on the separation plate, then put the suction rotator!Bupgraded rotator and the rotation pressure magnifier. The suction rotator is set between the inlet port separation plates of suction rotator and upgraded rotator and with the help from the pressure magnifier to support the weight of motor. Put this separation plate to cover the muffler and fixed by screw. Next, put the back of smoke cover together with the leg of muffler such that can pass through the outlet port and the buffer zone and fixed by screw too. Last, put the collapsible back on the back of muffler and fixed by screw. Thus finish the assembly. C) Air current field of the system: (1) Suction portion: smoke is suck from the inlet port of the downward passage of the smoke cover, first pass through the buffer zone of the muffler and then pass through the second downward air passage. Finally, pass through the outlet port of this passage. (2) Dynamic portion: the cleaning air left the suction portion pass through the inlet port of the suction rotator and suck by the suction rotator and discharge to the area between the outlet port separation plates of suction rotator and upgraded rotator. Then suck by the upgraded rotator and discharge to the pressure magnifier to increase pressure. (3) Exhaust portion: the pressure increased air current is then exhausted through the exhaust pipe of the pressure magnifier. By the low pressure phenomenon in the inlet and exhaust pipes produced by the high speed flow, the heat air in the kitchen and exhaust air in the exhaust pipe will mix and discharge. And thus air current filed is composed of the suction portion, dynamic portion, and the exhaust portion. While the whole unit is arrange and assemble by the upgraded fan, trapezoid muffler, collapsible back and smoke cover.