Kitchen Ventilation System With Fan Having Positive Pressure-To-Output Characteristic Applied Thereto

Abstract

The present invention relates to a kitchen ventilation system to which a fan having a positive pressure-to-output characteristic is applied. More particularly, the present invention relates to a system for maximizing efficiency of exhausting polluted air at minimum costs by applying a fan having a positive pressure-to-output characteristic to a hood, to improve a ventilation system which is installed vertically in an apartment house to discharge polluted air from kitchen hoods on respective floors to the top of an exhaust duct. The kitchen ventilation system of the present invention comprises an exhaust duct 100 provided at one side of an apartment house, and a hood 200 which is provided in the kitchen on each floor and includes a fan 210 having a positive pressure-to-output characteristic to collect surrounding air and discharge the collected air to the exhaust duct 100. According to the present invention, noise can be reduced and economical efficiency and ventilation performance can also be improved by maximizing efficiency of exhausting polluted air at minimum costs.

Description

TECHNICAL FIELD [0001] The present invention relates to a kitchen ventilation system to which a fan having a positive pressure-to-output characteristic is applied. More particularly, the present invention relates to a system for maximizing efficiency of exhausting polluted air at minimum costs by applying a fan having a positive pressure-to-output characteristic to a hood, to improve a ventilation system which is installed vertically in an apartment house to discharge polluted air from kitchen hoods in respective floors to the top of an exhaust duct, thereby reducing noise and improving economical efficiency and ventilation performance. BACKGROUND ART [0002] In general, a major source of polluting room air in an apartment house is a variety of harmful materials such as heat, smell and oil vapor, which are produced when a person cooks in the kitchen. To discharge the harmful materials produced in the kitchen to the outside, a hood is installed in the kitchen, and an exhaust duct is a...

AI Technical Summary

Benefits of technology

[0012] The present invention is conceived to solve the aforementioned problem in the prior art. An object of the present invention is to provide a kitchen ventilation system to which a fan having a positive pressure-to-output characteristic is applied, wherein the fan having a positive pressure-to-output characteristic is employed in a kitchen hood on each floor of an apartment house in which a common exhaust duct is used in both lower and higher floors of the apartment house such that polluted air in the kitchen can be effectively discharged without expensive control devices such as a microprocessor or pressure sensors even though different loads are applied to the lower and higher floors, whereby its noise can be reduced and its economical efficiency and ventilation performance can also be improved by maximizing the efficiency of exhausting polluted air at minimum costs.

Problems solved by technology

In general, a major source of polluting room air in an apartment house is a variety of harmful materials such as heat, smell and oil vapor, which are produced when a person cooks in the kitchen.

However, when the hoods 20 with the same output of power as each other are installed on the lower and higher floors, the output of power of the fan 21 in the hood 20 installed on the lower floors is unnecessarily large to discharge the polluted materials in the kitchen, whereas that installed on the higher floors is insufficient to discharge the polluted materials.

Furthermore, there is a problem in that the fan 21 in the hood 20 installed in the kitchen on the higher floors cannot smoothly discharge the polluted materials due to loss of static pressure as well as the noise is too greatly increased.

In case of the conventional kitchen ventilation system in which the plurality of pressure sensors measure air pressure in the exhaust duct at the respective levels to control the output of power of the fan according to the levels, however, there is a technical problem in that total manufacturing costs of the conventional kitchen ventilation system are inevitably high due to the plurality of pressure sensors for measuring the air pressure and a microprocessor for processing signals from the pressure sensors to control the fans.

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