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Local structure of smoke exhauster

A partial structure, range hood technology, applied in the direction of oil fume removal, mechanical equipment, machines/engines, etc., can solve the problems of poor dynamic balance, asymmetry between the front cover plate and the rear cover plate, turbulence, etc., to improve the exhaust fume Efficiency, improved dynamic balance performance, reduced vibration and noise effects

Inactive Publication Date: 2007-05-23
林润泉
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the fan impeller adopts only one front cover plate designed to be cone-shaped, while the rear cover plate is flat, this will make the front cover plate and the rear cover plate asymmetrical, thus affecting the dynamic balance when it rotates. It is easy to cause vibration and noise when the impeller rotates, and it is easy to damage the drive motor, and it is easy to generate turbulence during operation, which affects the performance of oil fume exhaust. Therefore, its disadvantage is that the dynamic balance is poor, and it is easy to generate vibration. Noise and turbulence will affect its normal oil fume exhaust performance, and it will easily damage the motor

Method used

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  • Local structure of smoke exhauster
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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] In the structural diagram shown in Figure 1 and the schematic diagram in Figure 2, the present invention includes a volute 1 and an impeller 2, the impeller 2 is assembled in the volute 1, and the impeller 2 is composed of 12 uniformly distributed arc-shaped The blade is composed of the first impeller cover plate 3 and the second impeller cover plate 4 arranged at its two sides, and the inner wall surface of the volute 1 is a quasi-Archimedes spiral curved surface, wherein the Both the first impeller cover plate 3 and the second impeller cover plate 4 are conical disc-shaped parts, that is, the impeller 2 is in the shape of a cone with a thick middle part and a thin peripheral edge, and the inclination angle of the conical surface is 0.5°~ 35°. Since the quasi-Archimedes spiral curved surface on the inner wall of the volute 1 is well known to those skilled in t...

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Abstract

The partial structure of an exhaust ventilator mainly comprises scroll case and the impeller within, with the said impeller formed by vanes on each arcs and impeller cover disk in conical shape at both sides with the impeller cover disk solving the unsymmetrical structure of the impellers, poor dynamic balance, easy generation of disturbing flow, vibration, noise and other issues with high exhaust efficiency.

Description

technical field [0001] The invention relates to a kitchen equipment, in particular to a partial structure of a range hood for making a range hood. Background technique [0002] Chinese invention patent CN1041271A discloses a kitchen range hood, which is mainly composed of a casing, a micro-motor, a fan, an oil collecting cup, a lighting device, a switch, and an intake and exhaust port, wherein the front cover of the fan impeller is made into a conical shape , the fan impeller is in the shape of a cone that gradually converges from the center to the edge, so that the cross-sectional area of ​​the airflow channel between any two blades of the fan impeller gradually decreases or remains the same from the middle to the outer edge, so that The ideal wind force or wind pressure is obtained at the air outlet, so that it will not be affected by the change of external airflow resistance, ensuring a good working condition. However, because the fan impeller adopts only one front cover...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C15/20F04D29/66
Inventor 林润泉
Owner 林润泉