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Range hood and control method thereof

A range hood and control circuit technology, applied in the direction of oil fume removal, heating methods, mechanical equipment, etc., can solve the problem that the airflow of the intake air duct can not be effectively solved, the state and intensity of the airflow are different, the scale is different, and the airflow cannot be uniform Introduce fan inlet and other issues to achieve the effect of solving the airflow spiral, improving efficiency and eliminating impact loss

Pending Publication Date: 2021-05-28
NINGBO FOTILE KITCHEN WARE CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the flow channel profile on the radial plane of this invention is a single arc design, and the flow field design is not carried out on the profile line, which fails to fundamentally solve the problem of flow around the air channel, and cannot effectively guide the air flow evenly into the fan inlet
[0007] The above-mentioned methods can eliminate the vortex in the air duct to a certain extent, and facilitate the airflow to accelerate into the fan, but none of them can effectively solve the problem of the airflow swirl in the air intake duct, and ensure that the airflow evenly fills the inlet of the fan system
In addition, under different working conditions, the airflow in the air duct varies in its swirling state, strength, and scale. The common internal flow guide device only has a flow control effect at certain operating conditions, and cannot affect the variable working conditions of the whole machine.

Method used

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  • Range hood and control method thereof
  • Range hood and control method thereof

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Embodiment Construction

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions.

[0043] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element must have a particular orientation, be constructed, and operate in a particular orientatio...

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Abstract

The invention discloses a range hood. The range hood comprises a draught fan system, the draught fan system involves a volute and an impeller located in the volute, and a first air inlet is formed in the volute; the range hood further comprises an air intake device, and the air intake device comprises a first flow guide cover arranged opposite to the first air inlet; and the range hood is characterized in that the air intake device further comprises a partition tongue, the partition tongue is arranged outside the volute and adjacent to the first air inlet, the first flow guide cover and the partition tongue form a complete whole, an air intake duct is formed in the first flow guide cover and the partition tongue, the partition tongue can rotate relative to the volute so as to change the shape of the air intake duct, and a rotating shaft of the partition tongue is parallel to the axis of the impeller. The invention further discloses a control method of the range hood.

Description

technical field [0001] The invention relates to a cooking fume purification device, in particular to a range hood and a control method for the range hood. Background technique [0002] Range hoods have become one of the indispensable kitchen appliances in modern families. The range hood uses the principle of fluid dynamics to work, sucks and exhausts the range hood through a centrifugal fan installed inside the range hood, and uses a filter to filter some grease particles. The centrifugal fan includes a volute, an impeller installed in the volute and a motor that drives the impeller to rotate. When the impeller rotates, a negative pressure suction is generated at the center of the fan, and the oil fume under the range hood is sucked into the fan, and after being accelerated by the fan, it is collected by the volute and guided out of the room. [0003] When the range hood is running, the aerodynamic performance and noise are not only related to the performance of the multi-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C15/20F04D29/44F04D29/66
CPCF24C15/2021F04D29/667F04D29/442
Inventor 杨伟刚
Owner NINGBO FOTILE KITCHEN WARE CO LTD
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