Noise reduction fan volute for range hood
A range hood and noise reduction technology, which is applied to parts of pumping devices for elastic fluids, machines/engines, mechanical equipment, etc., can solve the problem of turbulent flow at the bottom of the fan volute, reduced range hood flow, large Flow loss and other issues, to achieve a good noise reduction effect, reduce resistance, reduce the effect of flow resistance
Active Publication Date: 2014-08-13
江苏熙诚环保科技有限公司
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- Application Information
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Problems solved by technology
The air flow of the range hood directly impacts the curved surface of the volute, which will cause serious turbulent flow at the bottom of the fan volute, and the flow separation on the front and rear side cover plates, resulting in greater noise. At the same time, it will cause greater flow loss and make the range hood Reduced machine traffic
Method used
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[0018] see figure 1 , figure 2 and Figure 4 , the present invention is a range hood fan volute with double-sided air intake, which is mainly composed of a front side cover plate 1, a rear side cover plate 2, and an intermediate annular body 3 connecting the two side cover plates, on the front and rear side cover plates There are round holes with the same diameter as the air inlet of the fan, and the air inlets on both sides are equipped with current collectors 5 of the same size; the lower edge of the front cover 1 and the lower edge of the rear cover 2 pass through a fairing 4 connections, the width direction of the fairing is connected by three broken lines to form a downwardly recessed structure, the fairing 4 and the front side cover 1 and the rear side cover 2 can be made as a whole, and the fairing and the middle annular body 3 A cavity is formed outside the lower side. The soot gas enters the inside of the fan from the collector 5 and is thrown out from the fan out...
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Abstract
The invention discloses a noise reduction fan volute for a range hood. The noise reduction fan volute for the range hood comprises a front lateral cover board, a rear lateral cover board and an intermediate ring-shaped body for connecting the two lateral cover boards, the lower edge of the front lateral cover board is connected with the lower edge of the rear lateral cover board through a fairing, a cavity is formed between the fairing and the outside of the lower side of the intermediate ring-shaped body, wherein a downward sunk structure composed of three broken lines in a connecting mode is formed in the side-looking direction of the fairing; relative to two endpoints of the upper line of each of the front and rear lateral cover boards, the part in the front direction of the fairing retracts inwardly in the length of 1 / 40-1 / 20 of the length of the upper line. When running the range hood, by means of the fairing, oil smoke smoothly enters two lateral air flues after entering the range hood passage from an inlet, the fan noise is greatly reduced, and the pneumatic performance of a multi-blade fan is improved.
Description
technical field [0001] The invention relates to a kitchen range hood, in particular to a fan volute used in a range hood. Background technique [0002] The range hood is one of the necessary equipment in the home kitchen. At present, the range hood mainly includes a smoke collecting hood, an air intake box above the smoke collecting hood, a fan volute inside the air intake box, a multi-wing impeller inside the fan and a motor driving the rotation of the impeller. The fan volute is composed of a front side cover, a rear side cover and an intermediate annular body connecting the two sides. The front and rear side cover are respectively opened with air inlets of the same size, and are equipped with a current collector. The impeller is located in the middle annular body between the front and rear side cover plates, and the motor is fixed on the rear side cover plate. When the range hood is working, the multi-wing fan impeller is driven by the motor, and the front side air inta...
Claims
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Login to View More IPC IPC(8): F04D29/44F04D29/66
Inventor 李景银雷乐席光王小鹏
Owner 江苏熙诚环保科技有限公司