A method for enhancing the barrier function of air curtain and air curtain machine

Abstract

The invention provides a method for enhancing an air curtain separating function. A slot-shaped air outlet flow guiding device is arranged at a spraying-out opening of an air curtain machine, pressing, reshaping and flow guiding are carried out on an air curtain through the air outlet flow guiding device, so that the air curtain is in a flat shape, and the air curtain is sprayed out by a set angle oblique towards outdoor space from a vertical direction. According to the method, air pressure of the air curtain can be increased, the air curtain can be thin and erect and be oblique towards the outdoor space, and indoor space and the outdoor space are separated effectively. The invention further discloses the air curtain machine utilizing the method, the air curtain machine comprises an air curtain machine shell, a plurality of fans arranged in the air curtain machine shell and the air outlet flow guiding device arranged at the lower end of the air curtain machine shell, the air curtain is sprayed out by the air outlet flow guiding device, and the set angle is formed between the air curtain and the vertical direction. The air outlet flow guiding device is arranged at the lower end of the air curtain machine, and under the condition that air curtain machine power is not increased, separating effect of the air curtain is greatly improved.

Description

technical field [0001] The invention relates to a method for enhancing the barrier function of an air curtain and an air curtain machine. Background technique [0002] The air curtain machine is mostly installed above the entrances of shopping malls, theaters, hotels, restaurants, etc. that are refrigeration, air-conditioning, dust-proof, and heat-insulated, and is used to block indoor and outdoor air and prevent the exchange of cold and heat between indoor and outdoor air; Anti-pollution, anti-mosquito and fly effects. Such as figure 1 As shown, the air curtain machine in the prior art usually includes several fans 2 arranged side by side in the air curtain machine casing 1. When working, each fan 1 emits air at the same time, forming an air curtain 5 to block the indoor and outdoor. [0003] But existing air curtain has following problems: [0004] 1) if figure 2 , image 3 As shown, limited by the structure of the air outlet of the fan 2, the wind ejected by several...

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Problems solved by technology

[0005] 2) if Figure 4 As shown, since the air curtain 5 ejected by the fan 2 is distributed in a trapezoidal involute as it moves away from the air outlet, the stiffness of the air curtain 5 gradually decreases, and the wind pressure decreases near the ground, reducing the ability to block mosquitoes and odors.

[0006] 3) Since the air curtain 5 blows vertically downward to the ground, after the air reaches the ground, mixed flow, eddy current, and backflow are formed before and after the air curtain 5. The wind speed and wind pressure make the lower part of the air curtain static, which greatly weakens the barrier effect of the air curtain 5, and even completely loses the barrier effect of the air curtain within 50 cm of the ground.

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