Range hood having electric heater unit and production method thereof
A technology of electric heating device and range hood, which is applied in the directions of heating method, oil fume removal, lighting and heating equipment, etc., can solve the problems of disturbing airflow stability, loud noise, adverse performance of range hood, etc., so as to avoid cutting noise, manufacture Simple process and improved structure
Inactive Publication Date: 2012-02-08
BSH ELECTRICAL APPLIANCES JIANGSU
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Problems solved by technology
refer to figure 1 and figure 2 ,in particular figure 2 After the electric heating device is installed in the inner hole of the volute of the range hood, the extending direction of the heating pipe 2 in the inner hole is basically perpendicular to the rotation direction of the fan in the volute. The disadvantage of this structure is: the fan The flue gas flow generated when the fan blade rotates will continuously collide with several rows of heating tubes 2 arranged in the inner hole of the volute, thereby disturbing the stability of the air flow in the volute, and at the same time the flue gas flow is heated by the heating tubes 2 Cutting will also generate a lot of noise, and the above two disadvantages are not conducive to further improving the performance of the range hood
Method used
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[0026] The invention relates to a range hood with an electric heating device and a manufacturing method thereof. The range hood of the present invention usually refers to the common European range hood on the market. This range hood generally consists of a housing with a fume passage, a volute installed in the fume passage, and a motor driven by an electric motor installed in the volute. Fan, and the oil collection cover and oil collection cup etc. that are installed under the volute, the structure of this range hood has been well known by those of ordinary skill in the art. Therefore, details will not be repeated in the specific implementation manner of the present invention. Embodiments of the present invention are only Figure 5 and Figure 7 A schematic diagram of the volute of the range hood most relevant to the distinguishing technical features of the present invention is given in .
[0027] For ease of understanding, the structure of the volute of the range hood with...
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The invention discloses a range hood having an electric heater unit, comprising a spiral case, a fan which is arranged in the spiral case and is rotatable, and an electric heater unit fixed on the housing of the spiral case, wherein, the main part of the electric heater unit is arranged in an inner bore of the spiral case. The electric heater unit is formed by bending a tubular elongated member, and the extension direction of the bent tubular elongated member in the bore and the rotation direction of the fan in the spiral case are the same. The invention also discloses a production method of the range hood having the electric heater unit.
Description
[technical field] [0001] The invention relates to a range hood, in particular to a range hood with an electric heating device and a manufacturing method thereof. [Background technique] [0002] Range hoods with electric heating devices have been widely used in the industry, and the applicant's Chinese invention patent application with application number 200810244424.7 has disclosed such range hoods. refer to figure 1 and figure 2 ,in particular figure 2 After the electric heating device is installed in the inner hole of the volute of the range hood, the extending direction of the heating pipe 2 in the inner hole is basically perpendicular to the rotation direction of the fan in the volute. The disadvantage of this structure is: the fan The flue gas flow generated when the fan blade rotates will continuously collide with several rows of heating tubes 2 arranged in the inner hole of the volute, thereby disturbing the stability of the air flow in the volute, and at the sam...
Claims
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IPC IPC(8): F24C15/20
Inventor 刘伟施罗特曼·彼得施弗·珍妮
Owner BSH ELECTRICAL APPLIANCES JIANGSU