Nearby suction type range hood

Abstract

The invention discloses a nearby suction type range hood. The nearby suction type range hood comprises a shell, a machine box and a fan system. An air inlet is formed in the front side of the shell. The nearby suction type range hood is characterized in that the fan system is a ternary fan. The ternary fan is arranged in a chamber formed by the shell and the machine box together in the manner of being inclined relative to the horizontal direction. An air inlet of the ternary fan corresponds to the air inlet in the shell. A noise reduction module used for lowering noise generated by the ternaryfan is arranged in the shell. By adopting the ternary fan, the cooking fume suction efficiency can be greatly improved; because the ternary fan is arranged in the shell and the machine box in the inclined manner, the ternary fan not only has a short flow channel, but also is near to an air outlet pipe, eddy current loss caused by air flow separation to an impeller of the ternary fan is greatly reduced, and the impeller efficiency is improved; and because the noise reduction module is arranged, full-band noise of high frequency, intermediate frequency and low frequency can be absorbed, and itis avoided that influence is caused to normal use of the range hood.

Description

Technical field [0001] The invention relates to kitchen appliances, in particular to a near suction range hood. Background technique [0002] Range hoods have become one of the indispensable kitchen appliances in modern households. Generally, range hoods include top-suction and near-suction. Near-suction range hoods use vortex wind pressure to stay away, and absorb most of the fume that is closer to the stove in an arc form, which can reduce the adverse effects on human health. In addition, the power source is closer to the stove, which basically does not reduce the suction effect of the power source. [0003] For example, a Chinese patent application number 201710090915.X discloses a range hood, which includes a casing, a partition and a fan assembly. The partition is arranged inside the casing and divides the inside of the casing into a front chamber arranged in the front-rear direction and In the rear chamber, the partition is provided with a main air inlet, the fan assembly i...

AI Technical Summary

Problems solved by technology

[0004] The solutions in the prior art mentioned above usually use multi-blade centrifugal fans, and the multi-blade centrifugal fans are placed in the lower triangle. In order to ensure higher air intake efficiency, the volume of the fan system will be relatively large, and the fan system will This arrangement, because the impeller has a pre-rotation effect on the gas and the direction of the gas will gradually change during the 90° turning process of the gas flowing into the impeller, the simple consistent inlet and outlet angles are not good for the actual working ability of the impeller; in addition, The fan is far away from the air outlet pipe, it is difficult to overcome the resistance of the pipe, the fan faces the user directly, lacks noise reduction measures, and the noise is high

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