JPH03199617A - Air dust collector - Google Patents

Abstract

PURPOSE:To prevent clogging and facilitate maintenance by employing an air suction fan for suctioning air from which dust is removed with a first centrifugal separator and sending the air to a radiator core via a plural number of second centrifugal separator. CONSTITUTION:An air suction fan 17 is provided for suctioning air from which dust is removed with a first centrifugal separator 7 and sending the air to a radiator core 1 via a plural number of second centrifugal separator 31. Minute dust further separated with the second centrifugal separator 31 is discharged with the air flow branched from the air flow of the fan 17 while joining the dust separated with the first centrifugal separator 7 is merged to the branched air flow, suctioned and discharged. Since large amount of dust such as grass leaves in grass cutter and minute dust are removed from the air and the air is sent to the radiator core 1, the radiator core 1 and the filter are prevented from clogging and maintenance work is made easier.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention provides air blowing to the radiator core of the engine of a work vehicle such as a self-propelled lawn mower that generates large amounts of dust. This relates to an air dust removal device for removing dust inside and preventing clogging.

(Prior Art and Section M to be Solved) Conventionally, in self-propelled mowers, etc., in order to prevent dust such as stem pieces generated from adhering to the radiator core and causing clogging, a A filter such as a wire mesh was provided, but this wire mesh was clogged with large dust particles such as stem pieces, and the present invention has been developed by sucking air from which dust has been removed by a first centrifugal separator and passing through a plurality of second centrifugal separators. A suction fan is provided to blow air to the radiator core of the engine via a separator, and minute dust separated by this second centrifugal separator is discharged by a branched air blowing branched from the air blowing of the suction fan. The dust separated by the first centrifugal separator is combined with this branch air blower to be sucked and discharged. After fine dust is removed by a centrifugal separator, air is blown into the radiator core to cool it, and a portion of the air that has passed through the radiator core is sucked into a vaporizer or the like via an air cleaner.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

Radiator core 1 circulates engine cooling water,
This cooling water is cooled by passing suction air from a suction fan 5 driven by an electric motor 3. A centrifugal separator 57 is disposed in front of the radiator core 1 and is constructed as follows. At the inlet of the cylindrical air intake tube 9, a plurality of fixed blades 11.11 that are inclined in the circumferential direction are arranged in parallel in the circumferential direction, A tube 13 is provided inside the tube 13, and an air intake fan 17 driven by an electric motor 15 is provided inside. A gap 19 between the inner diameter of the wind suction pipe 9 and the outer periphery of the wind exhaust pipe 13 communicates with a first dust collection chamber 21 formed on the outer periphery of the wind exhaust pipe 13 . A cylindrical part 23 communicates between the rear of the exhaust air 1 13 and the front of the radiator core 1, and the inside is partitioned by a front partition plate 25 and a rear partition plate 27, forming a second dust collection chamber 29 therebetween. A large number of second centrifugal separators 31 are provided inside. That is, the front partition plate 2
One end of a cylinder 33 is fixed to 5 and communicates with an inlet 35 passing through the front partition plate 25, and the other end opens into the second dust collection chamber 29. A small diameter portion of a conical tube 37 is inserted near the rear end of the cylinder 33, and a large diameter portion communicates with an outlet 39 of the rear partition plate 27. Furthermore, a plurality of fixed blades 41 that are inclined in the circumferential direction are arranged in parallel in the circumferential direction at the front end portion of the cylinder 33 . A part of the air blown by the suction fan 17 branches into the dust exhaust pipe 43 that opens at the bottom of the second dust collection chamber 29, opens to the atmosphere, and opens one end midway into the first dust collection chamber 21. The other ends of the communicating pipes 45 are obliquely merged.

In the above embodiment, the air containing dust is sucked by the suction fan 17, and is blown to the second centrifugal separator 31 by the suction fan 17 while rotating inside the suction tube 9 by the fixed blade air. Large dust particles in the air are sent along the inner wall of the suction tube 9 by centrifugal force and enter the first dust collection chamber 21 through the gap 19. Dust is removed and suction fan 1
The air blown from the cylinder 33 enters the cylinder 33 from the inlet 35 and is rotated by the fixed blades 41, while the dust being blown flows along the inner wall of the cylinder 33 due to centrifugal force to the second dust collection chamber 29.
The dust enters the dust pipe 9 and is discharged together with a part of the blast air branched from the dust exhaust pipe 43. The air in the communication pipe 45 is sucked by the negative pressure caused by the air flow in the dust exhaust pipe 43, and the dust in the first dust collection chamber 21 is discharged from the dust exhaust pipe 43 through the communication pipe 45 by this suction and force. be done. The air from which minute dust has been removed is sucked by the suction fan 5, and the radiator core L is moved to AA.
to cool the cooling water.

〔Effect of the invention〕

According to the present invention, when removing large dust such as grass cutting stalks and fine dust from the heat and sending it to the radiator core, and then sucking it from the air cleaner to the carburetor, the radiator core is prevented from being clogged with large dust. Moreover, since no filter is used, there is no clogging, and maintenance is easy.

[Brief explanation of drawings]

Fig. 1 is a side sectional view of the first embodiment of the present invention, Fig. 2 is a front view of the main parts, Fig. 3 is an enlarged side sectional view of the second centrifugal separator, and Fig.
5 are a front view and a perspective explanatory view of the same essential parts, respectively. 1... Radiator core 7... First centrifugal separator 17... Air intake fan 31... Second centrifugal separator

Claims (1)

[Claims] A suction fan 17 for sucking air from which dust has been separated and removed by the first centrifugal separator 7 and sending it to the radiator core 1 of the engine via the plurality of second centrifugal separators 31
The fine dust further separated by the second centrifugal separator 31 is discharged by a branched air blower branched from the air blower of the air suction fan 17, and is separated by the first centrifugal separator 7. An air dust removal device characterized in that the air dust removal device is provided to merge dust into the branched air, suck it in, and discharge it.