In 2018, a new product, the "Gale Pressure Hood", began to appear in the kitchen and appliance market. Everyone knows that the hood is what is the function of the big hood? What are the functions? Today we will learn about the wind. Pressure hood, this new kitchen appliance.
What is a big wind pressure hood?
First, let's take a look at the concept of wind pressure. Due to the blockage of the building, the surrounding air is blocked, the dynamic pressure drops, and the static pressure rises. Local eddy currents are generated on the side and back, the static pressure drops, and the dynamic pressure rises. Compared with the undisturbed airflow in the distance, the increase and decrease of the static pressure are collectively referred to as wind pressure. The formula for calculating the wind pressure is: P=V*V/1600 (kPa or kN/m2) In short: wind pressure It is the pressure of the wind that is received by a plane perpendicular to the direction of the airflow.
The wind pressure of the range hood refers to the static pressure when the air volume is specified. According to the national standard GB-T17713-2011 of the range hood, when the air volume is 7m3/min, the static pressure of the range hood is the standard wind pressure of the range hood. The maximum static pressure of the range hood refers to the static pressure value of the range hood when the operating air volume is 0m3/min. Generally speaking, the corresponding standard wind pressure of the range hood with large maximum static pressure value will be larger. The maximum wind pressure value of the hood marked above refers to the maximum static pressure. In effect, the wind pressure of the hood is the air negative pressure zone in the space between the hood and the space between the hood and the stove, and The soot is sucked into the hood, pushed to the flue, and discharged to the outdoor air pressure. Therefore, the greater the wind pressure, the faster the exhaust, the better the exhaust effect.
At present, the kitchen electric industry believes that the maximum static pressure of the range hood when operating is 400Pa can be called large wind pressure, and over 800Pa is super large wind pressure. The wind pressure range hood refers to the range hood with a maximum static pressure of more than 800Pa. 2. The oversized wind pressure hood with more than 850Pa appeared.
What are the features of the wind pressure hood?
The main function selling point of the Dafeng pressure range hood is to better solve the problem of smoke exhaust in the kitchen and eliminate the phenomenon of 'flue congestion and soot pouring' in high-rise residential buildings. As China's urbanization process continues to accelerate, the housing ratio of Chinese people continues to increase. 99% of urban housing in China is multi-storey or high-rise. For high-rise residential users, there is a problem in cooking time every day: Smoke is not good. When the cooking peak time comes, the public chimney will be at this time. Concentrated in a large amount of soot, resulting in increased pressure in the flue, so it will form problems such as flue congestion and soot backflow.
Flue chimney
Due to the technical ability of traditional range hoods, although each hood manufacturer has continuously improved the technical index of suction, it only solves the problem of sucking and absorbing the smoke, and fails to improve the smoke exhaust effect in essence. This is also why most consumers buy hoods with large suction parameters, but they will still be plagued by soot scent, soot smoke, and soot.
When the wind pressure hood is in operation, it can form a huge air negative pressure zone within a certain space above the stove, so that the soot can be quickly sucked in and separated by the centrifugal force generated by the filter and the motor rotating, and at the same time form a super in the public flue. Strong smoke evacuation effect. Even in the face of the high-rise building's long-stroke public chimney and large air resistance, it can fully guarantee the use of the range hood. Compared with the traditional range hood, the wind-pressure hood can make the Chinese kitchen not I suffer from the scent of soot, the smoke can not be sucked, the soot can not be discharged, and so on, officially entered the real smoke-free era.
