display cooler safe operation and first-aid knowledge

Personal safety and rescue refrigeration system operators must not only master refrigeration technology knowledge and have proficient safety operation capabilities, but also must master the relevant Knowledge of personal safety and first aid. In the production process of display cooler, electrical equipment, sports machinery, high-temperature and high-pressure gas, low-temperature environment, and refrigerants may all endanger personal safety. Therefore, we must conscientiously implement relevant safety regulations and regulations. General electrical equipment, sports machinery, high temperature, high pressure, etc. all have complete safety regulations. This article mainly introduces the emergency rescue measures of the impact of refrigerant on the human body.

1, the influence of refrigerants on human physiology The influence of refrigerants on human physiology, such as poisoning, suffocation and cold burns, is more serious. The refrigerants that cause human poisoning are ammonia and sulfur dioxide, and the refrigerants that cause suffocation are fluorine. All refrigerants can cause cold burns. Freon refrigerants are non-toxic, odorless, non-flammable and non-explosive. However, when water and oxygen are mixed, it will decompose when in contact with an open flame, generating hydrogen fluoride, hydrogen chloride and phosgene, especially phosgene is very harmful to the human body. Although freon-based refrigerants are non-toxic, their gaseous density at room temperature is greater than that of air. When their content (volume concentration) in the air exceeds 80%, it can cause suffocation. When the refrigerant leaks, the degree of harm to the human body depends on the chemical properties of the refrigerant and its concentration in the air, as well as the length of time people stay in the environment. The toxicity of refrigerants is divided into six grades, with the first grade being the most toxic. Sulfur dioxide is the first grade. It is a display cooler refrigerant that was used in the early days, and it is rarely used now. Ammonia is secondary. When the concentration of ammonia in the air is between 0.5% and 1%, people will suffer severe illness or death if they stay in this environment for 30 minutes: when the concentration of ammonia reaches 15.5% to 27%, it will explode when exposed to an open flame. Danger. Cold burn refers to the damage of skin and surface muscle tissue caused by exposure of bare skin to low temperature refrigerant. Where there is a possibility of direct contact with refrigerant, protective measures should be adopted.