Driving mechanism of smoke barrier of smoke exhaust ventilator

Abstract

A driving mechanism of a smoke barrier of a smoke exhaust ventilator comprises a driving device and a hinged shaft. The driving device is fixed to the inner side of a panel of the smoke exhaust ventilator and provided with an output shaft. The hinged shaft is located at one end of the inner side of the smoke barrier. A first transmission assembly and a second transmission assembly are arranged on the inner side of the panel of the smoke exhaust ventilator. The first transmission assembly is connected with the output shaft and the hinged shaft. The second transmission assembly is connected with the first transmission assembly and the smoke barrier. The second transmission assembly is hinged to the first transmission assembly through an auxiliary hinged shaft. The output shaft drives the hinged shaft to move through the first transmission assembly and drives the smoke barrier to rotate around the smoke barrier through the second transmission assembly at the same time, and therefore the smoke barrier opens or closes an air inlet in the panel. By the adoption of the driving mechanism of the smoke barrier, the smoke barrier will not be worn when rotating, and the movement trail of the smoke barrier is irregular and can be adjusted according to the installation position; and the driving mechanism is small in size and easy to install and produce.

Description

technical field [0001] The invention relates to a smoke baffle for a range hood, in particular to a driving mechanism for the smoke baffle of a range hood. Background technique [0002] At present, a kind of oblique suction or side suction range hood emerging in the market has greatly improved the extraction rate of oil fume by its low-position smoking method, and because it is installed against the wall, the oil fume enters the hood from an oblique direction, which avoids The operator has the advantages of passively inhaling the oil fume, and overcomes the shortcomings of the traditional top suction range hood. The smoke baffle of the near-suction range hood, because it can block the oil fume in the open state, forms a negative pressure smoke collection area with the body, and can prevent the diffusion of the internal odor of the range hood and reduce the backflow of the oil fume in the public flue when it is in the closed state etc., play a key role. [0003] The smoke b...

AI Technical Summary

Problems solved by technology

[0004] For example, the Chinese invention patent with the patent No. ZL201020612195.2 discloses a range hood with a movable smoke guide mechanism, including a housing, an intelligent control unit, a motor, an air inlet, and a smoke collecting panel at the air inlet. The end of the connecting rod is movable on the shell, and the connecting rod is a flexible movable connecting rod. One end of the connecting rod is arranged on the smoke collecting panel, and the other end is connected to a transmission mechanism. Although such a range hood can prevent the return air from smelling , to protect the kitchen environment, and to close the smoke collection panel to make the range hood more beautiful and easy to clean, but such a smoke collection panel is controlled by a motor and a movable connecting rod to rotate, the structure is complex, and the processing accuracy is high. If the precision is not enough , may cause the smoke collection panel to not be completely closed or not fully opened

[0005] Another example is a flip-top range hood disclosed in Chinese patent CN201599859U, which includes a smoke collection hood and an air inlet. The mechanism includes a pull rod seat, a motor seat, a motor, a pull rod and a pull cable. The pull rod seat is set on the flip cover, the motor seat is set on the smoke collecting hood, the motor is set on the motor seat, and the motor is provided with a rotating wheel. The pull cable and the rotating wheel Hinged, one end of the pull rod is fixedly connected to the pull rod seat, and the other end of the pull rod is fixedly connected to the cable. This invention is a flip range hood with a flip cover, which is more convenient to open and close, has a good smoke collection effect and is beautiful. , but the switch of the flip cover is controlled by the motor, the cable and the pull rod. Once there is a problem with the motor or the assembly accuracy between the pull rod and the cable is not high, the flip cover cannot be completely closed. Therefore, there is still a hidden danger of oil fume backflow

[0006] Therefore, in summary, if the opening or closing of the smoke baffle is realized by means of electric or pneumatic, and the electric or pneumatic equipment needs to overcome the gravity of the smoke baffle, the electric or pneumatic equipment usually needs a large enough output force, usually The cost will be high, the structure will become complicated, and there will be hidden dangers of oil fume backflow

Images