Several problems related to elevator equipment

1. The relationship between the air in the elevator car and the air in the building or building where the elevator equipment is located:

The air flowing into the car from the building space when the machine room, hoistway, pit and car door are opened and closed. Although the air in a building is an overall concept, the air is pervasive, inseparable and unstoppable. The air in a certain area we are talking about refers to a specific time period or a specific occasion. Then if the air in any of the above spaces is not "fresh" or has "viruses including coronavirus", then the car space will become a "source" of infectious viruses. Therefore, the air quality and adjustment of the elevator car should not simply focus on the air in the car, but put the air quality of the above-mentioned spaces under "control". In this way, the above problems should be divided into two parts, one is the air quality and regulation of the car, and the other is the quality and regulation of the "source" air of the car air.

The problem mentioned above is a practical problem based on the concept of "building automation", "building intelligence" and the scientific and technological issues involved in the building. The raging coronavirus in the country has brought threats to people's health and even life. Under such circumstances, it is necessary to consider the air circulation conditions inside the building and the possibility of blocking the spread of the virus from the building to the elevator car as much as possible. Of course, the elevator car cannot be used as a place to spread the virus. Therefore, it is necessary to control and adjust the air quality in the car subjectively and actively, so that the device for adjusting the air flow in the car has the function of "killing viruses" in addition to being responsible for the air flow in the car. Due to the pervasive mobility of the air, the quality of the car air is bound to depend on the air quality of other spaces in the building. Therefore, consider the air quality of the car together with the air quality of other spaces in the building, and consider it as a large system requirement and put it into overall consideration on the corresponding equipment to ensure that the air quality of the car is controlled and the air quality is adjusted. Make it possible, that's what we do.

2. How is the concept of building automation defined?

Building automation includes air conditioning and ventilation monitoring system, water supply and drainage monitoring system, lighting monitoring system, power supply monitoring system, elevator operation monitoring system, comprehensive security system, fire monitoring system and structured integrated wiring system, etc., building automation system (BAS) ) is the management and control of all public mechanical and electrical equipment in the entire building. From the above concepts, we can know that building automation includes a ventilation monitoring system, including an elevator operation monitoring system. Of course, the air quality assurance system in the elevator car is also unified and integrated management in building automation, and should be included in the electromechanical equipment in the building. Such a definition clarifies the relationship between the large system of the building and the subsystems of each branch. The concept of the large system and the responsibilities of the branches are also clearly defined. It is necessary for each to fulfill its responsibilities. At the same time, we also need to know that building automation is the basic requirement of today's society for buildings and other buildings, including public facilities and public places. The core of this requirement is the basic and eternal theme of safety, energy saving and convenience.

3. Safety is the first priority of elevator equipment

From the level of technology and the level of serving the society and the public, safety is the first attribute of elevator equipment, the first priority of the elevator industry, and the lifeline of elevator equipment. There must be no hypocrisy and untruth. So what is the safety situation in the elevator industry? It should be said that although everyone can admit that the importance of safety is also implemented in actual work, there are still safety problems that cause harm to elevator users. Several elevator equipment accidents in 2021 have sounded the alarm for us. Highly aware and take precautions.

The safety of elevator equipment is an eternal theme. To understand safety research, it is necessary to analyze the principle, design, structure and manufacturing of the equipment in order to ensure safety. It is necessary to study the installation of the equipment and the maintenance during use. Study the failure of the above links. So what is failure? A piece of equipment such as an elevator's complete machine, components and electrical systems and components in the system lose the functions specified by the original design, which is called failure. Failure includes complete loss of original function, reduced function, serious damage or hidden danger, continued use will lose reliability and safety. It is important to understand the research of failure. The next step in failure analysis and failure performance is to put an end to failure within the service life of the equipment and eliminate the possibility of risk caused by failure. This is the goal we should strive for in our work.