Weak turbulence uniform air mixing and delivery device

Abstract

The invention relates to a weak turbulence uniform air mixing and delivery device. The weak turbulence uniform air mixing and delivery device comprises a fixing device, a fresh air inlet, an returned air inlet, and an air delivery module, wherein the air delivery module comprises a static pressure cavity, a filtering layer, a directional air delivery device, and a pressure equalizing film or a flow diffusion plate; the static pressure cavity is used for mixing the led returned air and fresh air; the filtering layer is used for purifying and filtering the led returned air and fresh air; an air delivery hole is formed in the directional air delivery device and is opposite to the filtering layer, so that the fresh air delivered out of the air delivery hole is rebounded by the top wall of the air delivery device and is uniformly mixed with the returned air; the pressure equalizing film or the flow diffusion plate is used for equalizing the pressure of the led returned air and fresh air. The weak turbulence uniform air mixing and delivery device has the advantage that the postoperation infection risk is decreased, the modularizing construction of new medical facilities is realized, and the returned air and fresh air are uniformly mixed at lower cost. The invention also relates to an assembly type weak turbulence uniform air mixing and delivery device.

Description

technical field [0001] The present invention generally relates to the field of medical ventilation facilities, in particular to a weak turbulence uniform air mixing air supply device. Background technique [0002] At present, mainstream medical ventilation facilities use unidirectional flow clean technology. Unidirectional flow, also known as "laminar flow", refers to the airflow passing through the air purification device or clean area in the same direction and with roughly parallel streamlines. The judgment condition of unidirectional flow is: the deviation between the streamline passing through the clean area and the ideal straight line does not exceed 14°. However, recent medical research data show that operating rooms with one-way ventilation have a higher risk of postoperative infection. [0003] Secondly, the transformation of ventilation facilities in medical facilities such as operating rooms often involves relatively large reconstruction costs, such as the need t...

AI Technical Summary

Problems solved by technology

If the mixing is uneven, it will directly affect the air quality of the output wind, for example, the oxygen content of the local output wind is low or the temperature is high

However, due to the treatment of dehumidification, temperature adjustment, humidification and purification, the fresh air often has a significantly higher pressure head (or wind pressure) and a correspondingly higher wind speed than the return air. When wind mixing, it is difficult to achieve uniform mixing

However, if the two are mixed in advance in the front pipeline, firstly, a longer mixing pipeline is required, and secondly, the high-pressure head fresh air is likely to hinder the forward flow of the low-pressure head circulation air, and even cause the low-pressure head circulation air to flow backward, that is, the so-called "Air blockage" phenomenon

Therefore, in the prior art, it is generally avoided to directly combine the conveying pipelines of fresh air and circulating air with large difference in transmission pressure head, but first adjust their pressure heads and then merge the two transmission pipelines, which also leads to significant increased cost

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