How many decibels is the noise of Gree household air conditioner normal?

What is the noise range of air conditioning stipulated by the state?

The national standard of split air conditioning noise is: the refrigeration capacity of split air conditioning is 25,004,500 W W, and the national standard stipulates that indoor noise is less than 48db and outdoor noise is less than 58db. Noise mainly comes from two aspects, one is the noise generated by air conditioners, compressors and other machines, and the other is the noise generated by plastic parts expanding when heated and contracting when cooled. The noise generated by plastic parts is mainly affected by the following factors: first, some air-conditioning manufacturers use inferior plastics or recycled plastics to process and produce plastic parts; Second, the quality of the produced external plastic parts is unstable and can not meet the requirements; Third, the installation process is unskilled, and the installation is not in place, causing noise.

How many decibels of air conditioning noise is normal?

In the Law of People's Republic of China (PRC) on the Prevention and Control of Environmental Noise Pollution promulgated by China, the phenomenon of exceeding the national environmental noise emission standard and interfering with others' normal life, work and study is called environmental noise pollution. Decibel is the unit of sound pressure level, also known as decibel. Used to indicate the volume of sound. The Standard for Urban Environmental Noise in People's Republic of China (PRC) clearly stipulates the maximum limits of five types of urban environmental noise: sanatoriums, luxury villas and luxury hotels, 50 decibels and 40 decibels at night, residential areas and cultural and educational institutions, 55 decibels during the day and 45 decibels at night; Residential, commercial and industrial mixed zone, 60 decibels during the day and 50 decibels at night; Industrial zone, 65 decibels, 55 decibels; The areas on both sides of urban road traffic trunk roads, inland rivers, railway trunk lines and auxiliary trunk lines are 70dB during the day and 55dB at night (from 22:00 to 6:00 at night). According to national standards, the noise in residential areas should not exceed 50 decibels during the day and should be lower than 45 decibels at night. If it exceeds this standard, it will be harmful to human body. So, what is the noise standard of indoor environment? The fourth paragraph of Article 5 of the National Method for Measuring Environmental Noise in Urban Areas stipulates that when measuring indoor noise, the indoor noise limit is lower than the regional standard value 10dB.

How many decibels is the indoor noise of Gree central air conditioner?

If the new family uses green central air conditioning now, the indoor noise should be less than 24, and the outdoor noise should be less than 50. Gree Group was established in March 1985, formerly known as the Industrial Development Corporation of the Special Zone. In 2009, Gree Group completed the enterprise restructuring and changed its name to "Zhuhai Gree Group Co., Ltd." with a registered capital of 800 million yuan. Gree Electric Co., Ltd. was established in 199 1 year. Zhuhai is the world's largest professional air-conditioning enterprise integrating R&D, production, sales and service. 20 12 year total operating income 100 1. 1 100 million yuan, up19.87% year-on-year; The net profit was 7.38 billion yuan, up 40.92% year-on-year, making it the first professional household appliance enterprise in China to achieve 654.38 billion yuan. Ultra-low-temperature digital multi-series units, high-efficiency DC variable-frequency centrifugal chillers, multifunctional floor heating household central air conditioners, 1hz variable-frequency air conditioners, R290 environmentally-friendly refrigerant air conditioners, and ultra-efficient constant-speed compressors independently developed by the company have filled the gaps in the industry. Good air conditioning, Gree! According to the three-guarantee period stipulated by the state, the following conditions are met during the warranty period, and the user can replace the machine when refusing to repair. 1. 1 Within 5 days from the date of sale/kloc-0, if the product fails to work normally, 2.2 machines can be replaced; According to the three-guarantee period stipulated by the state, if the main performance fault cannot work normally after being repaired twice in a row during the maintenance period, the machine can be replaced, and the maintenance period can be restarted according to the three-guarantee period stipulated by the state (only part is replaced). 3. Warranty return policy According to the three warranty periods stipulated by the state, the following conditions are met. If the user refuses to repair or replace the machine, he can return it. Major performance failures such as compressor failure and internal leakage of heat exchanger can be returned within 10 days from the date of sale. Within one year from the date of sale, the machine can not be repaired for more than two consecutive times (referring to the main performance), and the user insists on returning it.

How many decibels is the noise of Gree household air conditioner normal?

1. The noise of the fan mainly comes from various factors such as bearing, blade and motor balance, and is related to the mechanical processing of the motor and fan. 2, air conditioning fan noise is not easy to reduce noise, simple noise reduction, the effect is not good (low speed, small air volume). The noise of the fan mainly comes from the friction of the bearing, which will reduce the oil quantity of the turbofan. Anything that is not too worn can reduce a lot of noise.