The new coronavirus pneumonia outbreak in Wuhan has been touching the hearts of people all over the country, and we have seen all sectors of the community doing their best to donate medical supplies such as masks, protective clothing and disinfectants. In fact, in addition to providing doctors and nurses, patients with the necessary protective items, there is also a job is also a top priority, that is, how to safely transfer patients, and on the way to avoid the secondary spread of the epidemic, then here we have to mention a term - negative pressure ambulance.
Negative pressure ambulance believe that many people are the first time to hear, it is called "mobile mask", also known as "ambulance in the Iron Man", recently, the Ministry of Industry and Information Technology to the domestic several major automobile enterprises issued an emergency production of negative pressure ambulance Recently, the Ministry of Industry and Information Technology issued a task to several major domestic car companies to urgently produce negative pressure ambulances for the Wuhan epidemic relief work. So what is the negative pressure ambulance in the end? What role can it play in the fight against the epidemic? We also say in detail below.
Negative pressure ambulance than ordinary ambulance strong in?
"Negative pressure ambulance" in the word there is a big difference is "negative pressure", is also the biggest difference between it and ordinary ambulance. Through the negative pressure generator work, can keep the pressure inside the car is always lower than the outside atmospheric pressure. As we learned in our junior high school physics textbooks, gases flow from a place of high pressure to a place of low pressure. Therefore, the role of "negative pressure" is to make the air inside the car will not flow out through the doors and windows and other gaps, which prevents the spread of the virus.
After talking about the outside of the car and then inside the car, negative pressure ambulance air conditioning and fans using the principle of fluid dynamics, the formation of top-down directional airflow in the car, the airflow will first flow through the sitting position of the higher health care workers, and then through the lying down in the lower part of the patient, and ultimately, the gas inside the car will be sterilized by the filter and then discharged out of the car, will not enter the car and then recirculate, to ensure that the safety of medical staff inside the vehicle to avoid cross-infection. The new system will be able to protect the healthcare workers in the car and avoid cross-infection.
In addition, the negative pressure ambulance also has a variety of extended functions, equipped with respirators, defibrillators, cardiac monitors and a full set of rescue equipment, the installation of ultraviolet disinfection lamps, the central oxygen supply interface, can carry out traumatic suture surgery and cardiopulmonary resuscitation and other salvation; installation of more stringent protective measures of negative pressure isolation chamber, can cope with highly infectious diseases.
What is the difference between negative pressure ambulances in the production process?
Negative pressure ambulance to achieve negative pressure, the most fundamental prerequisite is to ensure absolute airtightness inside the car, it is because of its special nature, the country also has a strict technical standards for negative pressure ambulance, the State Ministry of Health's requirements for the hourly air change for 20 times, the value of the negative pressure between -10Pa to -38Pa, the filtration separation rate of 99.9%.
This makes the assembly process and material level of the car extremely demanding, it is no exaggeration to say that the quality control requirements of negative pressure ambulances are higher than those of most luxury brand passenger cars on the market.
Negative-pressure ambulances usually need to be customized on the basis of the base car, for example, the negative-pressure ambulance provided by SAIC Datsun is customized on the basis of SAIC MAXUS?V80, which needs to go through several steps such as foam insulation treatment, wiring, interior installation, electrical, medical equipment installation, negative pressure facilities installation, which will make the production cycle increase significantly.
Also on the steam Datsun, for example, in the New Year's Eve received an urgent task, requiring the delivery of 60 negative pressure ambulances within 10 days, for which the factory worked overtime to reduce the production cycle by two thirds, in such a high degree of production intensity to ensure the smooth delivery of the car, it is not easy.
Why is the negative-pressure ambulance logo "posted backwards"?
In this batch of 60 negative pressure ambulances produced by SAIC Datsun, we found a very interesting phenomenon, the words "negative pressure ambulance AMBULANCE" on the roof seemed to be pasted backwards. Later, according to our understanding, the negative pressure ambulance produced by SAIC Datsun adopts the international common ambulance labeling scheme, which is correct, and its purpose is to let the driver of the front car see the words "Negative Pressure Ambulance AMBULANCE" in the positive direction through the rearview mirror, so as to make way for the ambulance quickly without delaying the rescue and transfer time. The ambulance will not be delayed in the rescue and transportation time.
Summary:
Negative pressure ambulance is a strong protection barrier for Wuhan and even the whole country in the fight against the new coronavirus. 30 negative pressure ambulances produced by SAIC Datsun are now waiting for the scene of Leishenshan Hospital, and the other 25 ambulances are undergoing the final installation and debugging at the Wuxi factory of SAIC Datsun, and they will arrive at Wuhan on February 6 at the latest, and the following 5 ambulances will arrive at the designated hospital in the near future. The next five vehicles will also arrive at the designated hospitals, I believe that with the successive put into use of negative pressure ambulances, will make the front-line medical staff like a tiger to add wings, look forward to the early repulse of the epidemic, look forward to Wuhan's cherry blossoms bloom as promised.
This article comes from the author of the automobile home car, does not represent the views of the automobile home position.