Extractor hood with high-efficiency trapping function

Abstract

The invention discloses an extractor hood with a high-efficiency trapping function. The extractor hood comprises an extractor hood shell capable of being installed on a side wall, an inner shell is installed in the extractor hood shell, air supplementing openings are formed in the inner shell and can be driven by a cross-flow draught fan, and meanwhile an air suction opening is formed in the side,close to the wall, of the extractor hood shell. An oil leakage net and an oil collecting tank are arranged above the air suction opening. A motor is installed in the extractor hood shell, baffles aredriven by a connecting rod and transmission rods to be opened and closed along with the opening state, and hinges are installed on the two sides of the extractor hood shell and connected with the baffles. An air discharging port is formed in the top of the extractor hood shell, a smoke exhaust fan is installed in the extractor hood shell, and an air outlet of the smoke exhaust fan communicates with an inlet of an air exhaust pipeline penetrating through the air discharging port. According to the extractor hood with the high-efficiency trapping function, to achieve the same trapping effect, the required air discharging amount needed in the smoke exhaust manner is greatly reduced, correspondingly, noise and energy consumption can be reduced, and the purposes of energy conservation, emissionreduction and noise reduction are achieved.

Description

technical field [0001] The invention relates to a range hood, in particular to a high-efficiency collection range hood. Background technique [0002] With the modern development of the city, range hoods are installed in almost all urban residential kitchens. The extraction process of the range hood can be regarded as a point-sink type suction. Theoretically, the greater the exhaust air volume, the higher the efficiency. Properly increasing the air volume can help improve the effect of the range hood. However, due to the national requirements for building energy conservation, The airtightness of the building envelope is getting better and better. At the same time, due to the influence of cooking habits and outdoor air quality, doors and windows are often closed during the cooking process, which leads to the fact that the natural supplementary air often cannot meet the supplementary air requirements of the kitchen exhaust system. At the same time, due to the influence of wind...

AI Technical Summary

Problems solved by technology

The extraction process of the range hood can be regarded as a point-sink type suction. Theoretically, the greater the exhaust air volume, the higher the efficiency. Properly increasing the air volume can help improve the effect of the range hood. However, due to the national requirements for building energy conservation, The airtightness of the building envelope is getting better and better. At the same time, due to the influence of cooking habits and outdoor air quality, doors and windows are often closed during the cooking process, which leads to the fact that the natural supplementary air often cannot meet the supplementary air requirements of the kitchen exhaust system. At the same time, due to the influence of wind pressure in the air duct of high-rise buildings, the range hood used in the actual home cannot reach the rated air volume marked; at the same time, when the window is opened during actual use, the unstable air flow outside will It has a great impact on the collection efficiency of the range hood. Due to the interference of the ambient air flow (including personnel walking, etc.), the effect of the range hood will be greatly reduced, resulting in serious indoor pollution; in addition, the collection of the range hood The energy efficiency area is generally within 40-45 cm below the range hood, but due to the operating space requirements, there is an installation height of 65-80 cm between the range hood and the gas cooktop, which makes it impossible for the range hood to fully inhale cooking and gas. Oil fumes and other harmful gases produced by fuel combustion, especially small particles splashed

A large amount of unexcluded smoke will seriously affect the indoor air quality, and then affect people's health

[0003] The current range hoods have entered the era of large air volume. In order to improve the collection efficiency, the range hoods on the market start with increasing the air volume. Many products can instantly generate 20m 3 The strong air volume per min, in fact, blindly increasing the exhaust air volume will increase the negative pressure and energy consumption too much; in addition, in order to improve the collection efficiency, it is a kind of way to increase the baffle by using the Coanda effect (coanda effect). method, for example, a range hood disclosed in Chinese patent application number CN 111006276 A, two baffles are set on the front, but the side escape of the range hood is actually much more serious than the front, and two baffles are set on the front. The baffle affects the appearance

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