Negative pressure ward exhaust purification system

Abstract

The invention discloses a negative pressure ward exhaust purification system. The system comprises a pressure difference sensor, a controller and a negative pressure exhaust purification device. The pressure difference sensor detects the air pressure difference between the internal environment and the external environment of a ward, and the controller adjusts a working mode of the negative pressure exhaust purification device according to the air pressure difference detected by the pressure difference sensor. The exhaust purification device can solve the problem of accelerated exhaust under the special condition, and can selectively adjust the air inlet amount and the air speed ratio in a first exhaust funnel and a second exhaust funnel according to actual conditions, and the problem that the air return amount, the air exhaust amount and the air speed cannot be adjusted by existing purification equipment in the market is solved.

Description

technical field [0001] The invention relates to the field of air purification, in particular to an exhaust air purification system for negative pressure wards. Background technique [0002] Negative pressure ward means that under special equipment, the air pressure in the ward is lower than the air pressure outside the ward. In terms of air circulation, only fresh air from outside can flow into the ward, and the ward has been polluted by patients. The air will not leak out, but will be discharged to a fixed place in time through a special channel. In this way, the place outside the ward will not be polluted, thereby reducing the chance of medical staff being infected in large numbers. Negative pressure wards are especially suitable for rescuing patients with infectious diseases, and more suitable for patients with respiratory infectious diseases. [0003] There are two main functions of the negative pressure isolation ward for infectious diseases. One is to use the princip...

AI Technical Summary

Problems solved by technology

[0005] 1. In an emergency environment, it is impossible to quickly transform ordinary wards, apartments, residences, hotels, stadiums, etc. in a short period of time to meet the requirements for isolation of infectious disease negative pressure wards

The most important thing in a negative pressure ward is to form a negative pressure in the room and to purify the air intake and exhaust. One of the factors hindering the rapid construction and renovation of negative pressure wards is the promotion of air supply purification devices and exhaust air purification devices. , deployment and installation, the existing exhaust air purification device is unable to meet the requirements of this rapid transformation,

[0006] 2. The existing negative pressure exhaust purification device on the market has only one exhaust outlet. In a special emergency environment, when there are more and more patients in the negative pressure ward, it is not only necessary to accelerate the intake, but more importantly, to accelerate the exhaust. , the existing exhaust purification device cannot adapt to the sudden increase of patients because there is only one exhaust outlet

In emergencies such as more and more patients in the shelter hospital, the fully loaded exhaust unit cannot accelerate exhaust and purification

[0007] 3. The negative pressure exhaust purification unit on the existing market lacks internal circulation

[0010] 4. In the existing negative pressure exhaust purification device on the market, the valve of the exhaust outlet can only be opened or closed, and the exhaust air volume cannot be adjusted. When the negative pressure is too large, the patient is uncomfortable. The existing exhaust purification device, It is impossible to properly adjust the air volume of the air outlet or exhaust outlet according to the indoor air purification situation

[0011] 5. The negative pressure exhaust air purification device on the existing market has poor patient comfort during use

[0012] 6. The negative pressure exhaust purification device on the existing market cannot be adjusted adaptively, so that the negative pressure difference standard (international standard) of the negative pressure ward can be maintained in the ward

[0013] 7. The existing negative pressure exhaust purification devices on the market, because of the lack of internal circulation, the life of the filter unit is short, and it is impossible to adjust the air volume of the internal circulation

[0014] 8. In the existing negative pressure exhaust purification device on the market, the fan is installed at the front end of the filter unit, and the fan has the risk of becoming a pollution source

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