What is the basic concept of air conditioning?

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(1) [Air conditioning]: Air conditioning is to adjust the air temperature, humidity, cleanliness and airflow speed in houses, engine rooms, passenger cabins and carriages to meet certain requirements.

(2) [Air conditioner]: refers to the above device: air conditioner. The Exodus room has been air-conditioned. [Edit this paragraph] Introduction to air conditioning Air conditioning, namely room air conditioner, is a unit used to provide processing air for a space area (usually closed). Its function is to adjust the temperature, humidity, cleanliness and air flow of indoor (or enclosed space or area) air to meet the requirements of human comfort or technological process. [Edit this paragraph] Working principle The compressor compresses the gaseous refrigerant into a high-temperature and high-pressure liquid refrigerant, and then sends it to the condenser (outdoor unit) for heat dissipation, which becomes a normal-temperature and high-pressure liquid refrigerant, so the outdoor unit blows out hot air.

Then enter the capillary and enter the evaporator (indoor unit). Because the space suddenly increases and the pressure decreases after the refrigerant reaches the evaporator from the capillary, the liquid refrigerant will vaporize and become a low-temperature gaseous refrigerant, thus absorbing a lot of heat, and the evaporator will become cold. The fan of the indoor unit blows out indoor air from the evaporator, so the indoor unit blows out cold air. Water vapor in the air will condense into water droplets when it meets a cold evaporator and flow out along the water pipe, which is why air conditioners produce water.

Then the gaseous refrigerant returns to the compressor to continue compression and circulation.

When heating, there is a component called four-way valve, which makes the refrigerant flow in the condenser and evaporator in the opposite direction to that during refrigeration, so when heating, cold air is blown to the outside and hot air is blown to the room.

In fact, it is the principle that junior high school physics has learned that heat is discharged when liquefied (from gas to liquid) and heat is absorbed when vaporized (from liquid to gas). [Edit this paragraph] The invention of air conditioning The British inventor Willis haviland Kelly 1902, known as the father of refrigeration, designed and installed the first air conditioning system. The air conditioning system was designed for a printer in new york, USA. He found that the change of temperature would cause the deformation of paper, which would lead to the imbalance of color ink. Carrier registered the patent 1906.

July 1902 Carrier, a young man who just graduated from Cornell University for one year, invented air conditioning while working in Fudge Company in Buffalo, but the original purpose of air conditioning was not to bring people a comfortable living environment, but to serve some dead things.

It is said that one of Buffalo's customers, William Printing Factory in Xiakete, new york, has a printing machine that causes the paper to expand and contract due to the change of air temperature and humidity, and the ink is misplaced, so that clear color printed matter cannot be printed. So I turned to Buffalo Company. Carrier thinks that since air can be kept warm by coils filled with steam, why not use air to cool down by coils filled with cold water? The moisture in the air will condense on the coil, so that the air in the factory will be cool and dry.

1902, 17 July, the air-conditioning era began with the first use of air-conditioning in this printing house. Soon, other industries, such as textile, chemical, pharmaceutical, food and even arms industry, also greatly improved the product quality because of the introduction of air conditioning. 1907, the first buyer to export air conditioners was a Japanese silk factory.

19 15, Carrier established its company and is still one of the largest air conditioning companies in the world. But in the 20 years after the invention of air conditioning, it has always been a machine, not a person. Until 1924, many people fainted in a shopping mall in Detroit because of the sultry weather. First, three central air conditioners were installed, which was a great success. The cool environment has greatly increased people's desire for consumption. Since then, air conditioning has become a powerful tool for merchants to attract customers, and the era of air conditioning serving people has officially arrived.

But when it comes to air conditioning, it can be popularized, mainly through cinemas. Most Americans first came into contact with air conditioning in the cinema. In the 1920s, cinemas used air-conditioning technology, promising to provide cool air for the audience, making air-conditioning as attractive as the film itself, and summer replaced winter as the peak season for watching movies. Subsequently, a large number of indoor entertainment places such as casinos, indoor gymnasiums and shopping malls opened all year round, all thanks to the appearance of air conditioning. [Edit this paragraph] The function of air conditioner 1 to cool down.

In the design and manufacture of air conditioners, it is generally allowed to control the temperature between 16~32℃. If the temperature is set too low, on the one hand, it will increase unnecessary power consumption; on the other hand, when the temperature difference between indoor and outdoor is too large, people can't adapt to the temperature change quickly when entering and leaving the room, and it is easy to catch a cold.

Step 2 remove moisture

Air conditioning is accompanied by dehumidification in the refrigeration process. The relative humidity of the comfortable environment should be around 40~60%. When the relative humidity is too high, such as above 90%, people still feel bad even if the temperature is within the comfortable range.

Step 3 raise the temperature

Both heat pump and electric air conditioner have the function of heating. The heating capacity gradually decreases with the decrease of outdoor ambient temperature, and it can hardly meet the heating requirements at -5℃.

Step 4 purify the air

The air contains a certain amount of harmful gases such as NH3 and SO2, as well as various smells such as sweat, body odor and toilet odor.

The purification methods of air conditioning include fresh air, filtration, adsorption and absorption by activated carbon or photocatalyst, etc.

A. Fresh air: The indoor humid air is exhausted to the outside by the fan system, so that a certain degree of negative pressure is formed in the room, and fresh air enters the room through the gaps in the surrounding doors and windows, thus improving the indoor air quality.

B photocatalyst: it can be regenerated under the irradiation of light, releasing harmful substances such as ammonia, nicotine, acetic acid and hydrogen sulfide, and can be reused.

5. Increase the concentration of negative air ions.

The concentration of charged particles in the air will affect human comfort. Installing negative ion generator on air conditioner can increase the negative ion degree of air and make the environment more comfortable, which has certain medical effect on lowering blood pressure and inhibiting asthma. [Edit this paragraph] Development history In the 1960s and 1970s, a rare dry weather occurred in the United States. In order to solve the problem of cold and heat sources of air conditioning in arid and water-deficient areas, the United States took the lead in developing air-cooled chillers, replacing cooling towers with air heat dissipation. Its English name is: Air cool Chiller, or Chiller for short!

In the history of air-conditioning, the United States has developed and improved the central unit air-conditioning system with air ducts, and has received strong support from air-conditioning equipment dealers and distributors who are installing and maintaining the unit air-conditioning system with air ducts on site. WRAC is the simplest and cheapest system, which can be easily purchased in retail stores and installed by itself when the continuous high temperature comes. At the same time, SRAC without air duct and special purpose acquisition companies have been developed and perfected in Japan since 1970s, driven by different American markets. After that, the equipment design and manufacturing technology was transferred to China in 1990s, through joint venture with local companies (including local manufacturers of major components such as compressors, heat exchangers, electric actuators, fine valves and electronic controllers). In the 1990s, China also absorbed the advanced technology of large air-conditioning equipment from other advanced countries and established joint ventures with most large American companies. Today, China is a top country, and its major local factories and joint ventures produce a large number of SRAC and special purpose acquisition companies to meet the growing domestic market and export demand. In the past few years, Japan has been exporting SRAC and special purpose acquisition company products to China, Europe and the Middle East to open up new markets. However, China is now the largest exporter of air conditioners. In 200 1 year, the total export volume of WRAC, SRAC and special purpose acquisition companies reached 5 million units, and it is estimated that 7.5 million or 8 million units will be exported in 2002, while Japan is losing its export status.

From June 5438+0 to June 5438+0, 2008, the total industrial output value of air-conditioning enterprises in China was143,283,146,000 yuan; Realize the cumulative product sales income of 15 1 410493,000 yuan; The total accumulated profit is 5165.862 million yuan.

Historical Evolution of Household Air Conditioning Products in China

First generation grid board household air conditioner

1988, the first domestic split wall hanging machine KF- 19G 1A was born in Huabao Air Conditioning Factory. At that time, Huabao gave it a poetic name-Snow Lotus. The birth of Saussurea involucrata opened a new era in China's household air-conditioning industry. Since then, Chunlan has also owned its own hang-up production line.

The air conditioners produced by Huabao and Chunlan dominated for nearly 10 years from the late 1980s to the mid-1990s. The air conditioners they produce are very similar in appearance: large flat rectangular parallelepiped structure. At the same time, the appearance of a large number of imported products was similar to this before the mid-1990 s, and it was difficult to tell which brand of air conditioner was at that time without looking at the trademark, especially hanging up.

1988 The first split wall hanging machine KF- 19GA developed by Warburg Air Conditioning Factory is a typical example of grid panel products.

Until 1995, Chunlan's KFR—22G was still the leading product in the hang-up market, which also showed that the domestic air-conditioning products were still mainly grid boards.

The same is true for cabinets. Since Chunlan developed a new type of 70DS cabinet machine in 1987, many brands have only fine-tuned some details or colors in the production of cabinet machines.

Second generation and second generation grid board household air conditioners

With the gradual popularization of household air conditioners, their appearance is also quietly changing. This change begins with the imported machine market.

In 1980s, the air-conditioning market in China was dominated by imported machines. Even in 199 1- 1995, imported machines still played a decisive role and played an enlightening role in the development of domestic air conditioning industry in China. Many domestic brands are assembled with imported parts. This enlightenment also includes the change of the appearance of indoor units of domestic air-conditioning products.

In the mid-1990s, small indoor units appeared in imported air conditioners represented by mitsubishi electric, Hitachi and Panasonic. This indoor unit has changed its huge and bulky image in the past, and its appearance is exquisite and neat, which is integrated with the home environment and is favored by consumers. With the promotion and production of this kind of products in many air-conditioning plants in China, the second-generation grid board air-conditioning has dominated the air-conditioning market and is popular so far.

From the first generation grid plate to the second generation grid plate is an improvement in the appearance of household air conditioners, which is not only manifested in the reduction of volume and beautification of appearance, but also in the change of evaporator folding of indoor units and the improvement of air conditioning system capacity. It can also be seen from this aspect that the change of evaporator folding is the key factor in the transformation of two generations of grid plates. At the end of 1990s, many enterprises invested a lot of manpower and material resources in the research of evaporator folding. Midea also applied for the patent of multiple evaporator in 1998, and many of its products use quadruple evaporator, while Gree, another leading brand in the industry, generally uses quintuple evaporator.

However, the air intake mode has not changed much from the first generation grid plate to the second generation grid plate, and the circulating air duct is still adopted. Of course, this is also the fundamental reason why the grid plate is a grid plate, and its technical characteristics determine its appearance.

Third, the advent of the era of optical panels.

Turn over the color pages of new products of domestic factories in 2005, and a brand-new weather will leap from the paper. Compared with the grid panels in previous years, in 2005, most brands launched the light panel series of air-conditioning products, such as Gree's Tian Li series, Haier's high-efficiency oxygen bar series, Midea's Q2 series and V series.

This collective behavior of air-conditioning manufacturers has pushed China household air-conditioning products into the era of light board.

Light panel series household air conditioning products did not appear for the first time in 2005. TCL is the first brand to launch light panel products among domestic air-conditioning manufacturers.

In 200 1 year, TCL air conditioner launched a new product "Little Xia Feng" series of hanging machines, which popularized the smooth panel and large circulation air path for the first time. The so-called large circulation wind path is to design the air inlet of the indoor machine at a fixed position of the machine, and use the air outlet to increase the air circulation radius to form a large circulation wind path, so as to strengthen indoor air convection and speed up heat exchange.

In 200 1 year, TCL air conditioner launched the earliest representative product "Little Xia Feng" series of light panel air conditioners.

The large circulation wind path is the technical feature of "Little Wind Man" series, and it is also an important selling point of light board products.

TCL didn't get a positive response from the industry and the market, but it provided a development idea for household air-conditioning products. In the following years, some air-conditioning factories successively launched their own light panel series air conditioners. Light panel air conditioners from LG, Samsung, Sharp, Midea, Chunlan and Yongle were listed in 2003, and this phenomenon became more and more serious in 2004 and became a trend in 2005. Judging from the new products launched by various factories in 2006, light panel air conditioning has become the dominant.

Compared with grid panel, light panel products pay more attention to the fashion and modernity of appearance. The leap from grid panel to light panel is not only an improvement in appearance, but also a change in product technology. The upper inlet and lower outlet of the smooth board hanging machine replaced the original circulating air path of forward and lower outlet, and the open and close design of the side air inlet or air inlet of the smooth board hanging cabinet machine gradually became the same as the original traditional circulating air path of lower inlet and upper outlet, which dominated the design trend of cabinet products.

Fourth, the sudden appearance of color panels.

In the domestic air-conditioning market, it is the initiative of Korean brands Samsung and LG to introduce colors into the design of air-conditioning panels and form traditional styles. In 2002, colorful panels made the whole air-conditioning industry shine, especially under the cover of "white" of other brands without exception, Samsung's colorful panel cabinets were particularly eye-catching.

In the following years, both Samsung and LG had new home air conditioners with color panels. At the same time, other factories began to follow suit. By 2005, most factories in the market have products with color panels; Moreover, the color types of panels have become colorful, among which a number of color screen products can be called classics, such as Haier's color screen double fresh air, Gree's Tian Li, Chigo's Flower Full Moon, TCL's Blue Army series, Haitian Na series and so on.

In 2006, the factory was more bold in the research and development and promotion of color board products, and Galanz even applied for the patent of color board air conditioning; Judging from the new products on the market now, there are few single white products. Household air conditioners are running counter to traditional white goods.

The technical development of household air conditioning products has always been controversial. The development trends of frequency conversion, energy saving and environmental protection lack the market foundation to support its large-scale breakthrough in the current industry environment. In other words, it is difficult for domestic air-conditioning products to create new demand through revolutionary technological innovation. On the contrary, the product appearance change brought by fine-tuning technology is becoming an irresistible trend, and the reason why this trend can become a reality is consistent with the changes in people's living environment and aesthetic concepts in the new era; And for factories, the cost of changing the appearance of products is not very high. However, it should be reminded that from the technical development trend of household air conditioners, the change of appearance is not the mainstream of technical development, but only the improvement of technology. More importantly, the quality problems of air conditioners have become more and more serious in recent years. Usage: In summer, residents use a lot of electricity, mostly because of the use of air conditioners. Air conditioning can be said to be an important means of saving electricity for household appliances. Experts suggest that if the air conditioner increases 1℃ on the basis of the customary temperature, it can save 10% of the power load. Using the sleep function of air conditioner can save 20% electricity. If the air conditioning temperature of a 300-room hotel is raised by 1℃, the power consumption problem of dozens of families will be solved. For every electricity saved 1 kwh, 0.4kg of standard coal, 4 liters of clean water, 0.272kg of carbon dust, 0.997kg of carbon dioxide and 0.03kg of sulfur dioxide are saved. Not to mention saving electricity from "big consumers" air conditioners, which is both energy-saving and considerable. Scientific experiments have proved that the indoor temperature that people feel comfortable is 24℃-28℃ in summer and 18℃-22℃ in winter. When the air relative humidity is 50% and the temperature is 25℃, the human body feels most comfortable. You can refer to the following methods.

The first trick: Don't blindly covet the low temperature of the air conditioner, just set the air conditioner temperature appropriately, because when the air conditioner is cooling, if the set temperature is increased by 2℃, it can save electricity by 20%. Experts say that for people who sit still or do light work, the acceptable indoor temperature is generally between 27℃ and 28℃, so at this time, everyone can set the air conditioner to sleep, which can also save electricity.

The second measure: choose an air conditioner with moderate cooling power. The air conditioner with insufficient cooling power can not only provide sufficient cooling effect, but also shorten the service life of the air conditioner and increase the possibility of air conditioner failure because of long-term uninterrupted operation. So it would be better to choose an air conditioner with more refrigeration power? Not exactly. According to reports, the air conditioning refrigeration power is too large, and the air conditioning thermostat switch is too frequent, which will lead to increased wear and tear of the air conditioning compressor; At the same time, it will also increase the power consumption of air conditioners.

The third measure: close the doors and windows when turning on the air conditioner. Don't open the door frequently in air-conditioned rooms to reduce the infiltration of hot air. At the same time, for air conditioners and window air conditioners with ventilation function, there is no need to open the damper for ventilation when there is no odor indoors, which can save energy by 5%-8%. [Edit this paragraph] Five steps of air conditioning purchase and installation: home central air conditioning purchase and installation.

Step 1: Determine the host model.

First of all, we should consider the area and orientation of the house to see if there are large glass windows, so as to calculate the maximum simultaneous use coefficient of air conditioning. Generally speaking, in the ordinary home environment, the cooling capacity needed in actual use is often not the sum of the cooling capacity of all rooms, but lower than the latter, and the former only needs to reach about 60% to 70% of the latter. This can save investment and avoid unnecessary waste. The actual cooling capacity of the room can be calculated by the following formula:

Actual cooling area = building area × building utility rate ×65% (excluding non-cooling areas such as kitchen and toilet).

Actual required cooling capacity = actual cooling area × cooling capacity per unit area

Step 2: Determine the indoor unit and tuyere.

Determine the model according to the actual cooling capacity. Only one indoor unit or air outlet is needed for each room or hall. If the living room is large or rectangular, you can add an indoor unit or tuyere. The requirement of about one horse per 12 square meter shall prevail.

Step 3: Determine the air conditioning layout:

1, the location of the main engine should pay attention to good ventilation and heat dissipation, which is convenient for maintenance, and at the same time, the location should be hidden as far as possible to avoid affecting the beauty of the house and the noise affecting the room;

2. The location of the indoor unit should match the layout of the indoor decoration, which is generally hidden in the ceiling or the top of the high cabinet. Generally, indoor machines are ultra-thin and can only be placed at a height of about 25 cm. Good return air should be paid attention to during installation to make indoor air circulate, so as to ensure air conditioning effect and air quality. [Edit this paragraph] air conditioning brand list in the air conditioning brand list

Top ten air-conditioning brands/air-conditioning brands

1. Gree air conditioner (China famous brand, China well-known trademark, national inspection-free products, top ten air conditioner brands)

Midea air conditioner (China well-known trademark, China well-known trademark, national inspection-free products, top ten air conditioner brands).

Haier air conditioning (world famous brand, China famous trademark, national inspection-free products, top ten brands of air conditioning).

4 chigo air conditioning (China famous brand, China well-known trademark, national inspection-free products, air conditioning top ten brands)

Hisense-Kelon (China famous brand, China well-known trademark, national inspection-free products, top ten air-conditioning brands)

Chunlan air conditioner (China well-known trademark, China well-known trademark, national inspection-free product, top ten air conditioner brands).

7 Aux air conditioning (China famous trademark, China famous trademark, national inspection-free products, top ten air conditioning brands)

8 Daikin Air Conditioning (China well-known trademark, top ten air conditioning brands, Osaka, Japan, 1924)

9 panasonic air conditioning (national inspection-free products, top ten brands of air conditioners, enterprises after the split of Mitsubishi in World War II)

10 maintenance of Mitsubishi air conditioners (national inspection-free products, top ten brands of air conditioners, Japanese military products) [Edit this paragraph] How to maintain and clean air conditioners?

The maintenance and cleaning of air conditioners are the main keys to air conditioner maintenance, which is conducive to improving the refrigeration effect, shortening the refrigeration time, saving energy and prolonging the service life of air conditioners. It is also an important link to rationally use air conditioners and strengthen standardized management. In the past, air-conditioning users paid insufficient attention to the maintenance and cleaning of air conditioners. It is time to strengthen this work and promote the development of air conditioning industry.

Pre-startup maintenance

Usually, household air conditioners are turned off in September, turned on in May and June of the following year, and stopped for more than half a year. Therefore, a comprehensive "diagnosis" must be made before the air conditioner is turned on to check whether there is a "fault" in the air conditioning equipment. According to the inspection results, under the guidance of professional and technical personnel, do a good job in maintenance and cleaning, including the casing, fuselage and filter screen of outdoor and indoor units, and then start trial operation to observe the cooling speed and effect.

Maintenance during startup.

After the air conditioner is turned on, it is necessary to determine the maintenance frequency during the start-up of the air conditioner according to various factors such as environmental conditions, climate conditions, start-up time, surrounding dust, air cleanliness, indoor cleanliness and so on. Poor environmental conditions, hot weather, outdated air conditioning, long start-up time of air conditioning, and increased maintenance times during air conditioning start-up, generally once a month and a half. If the environmental conditions are good, the air conditioner is relatively new, there is less dust in the air, and the air conditioner can be turned on reasonably and can be used alternately with the electric fan, then the maintenance cycle can be extended appropriately, from air conditioner on to air conditioner off 1-2 times. Maintenance should be careful and meticulous, leaving no dead ends. Reach the standard, improve the cooling speed and effect, and achieve energy saving, freshness and comfort.

Maintenance after shutdown

It is a perennial law to turn on the air conditioner when the weather gets warmer and turn off the air conditioner when the weather gets cooler. Pay attention to the comprehensive and detailed inspection of outdoor units and indoor units before the air conditioner is turned off. Maintenance, maintenance and cleaning should be done one by one. Leaky links should be tightened and strictly checked. After the above steps are completed, cover the air conditioner to prevent dust pollution, prevent the air conditioner from dripping into water, keep it clean, prepare for reuse next year, save energy and prolong the service life of air conditioning equipment. Focus on protecting high-quality distributors and cabinets of well-known brands, and give full play to the energy-saving effect.

General air conditioning maintenance

1. Remove the sundries in the vent to ensure normal ventilation. Observe whether the outdoor rack is loose, and clean the outdoor ventilation net cover for foreign objects. At the same time, keep the vents open.

2. Clean the surfaces of indoor and outdoor heat exchangers to improve the efficiency of heat exchangers. When cleaning the indoor heat exchanger, carefully remove the panel, scrub it with a soft rag, and gently scrub the heat exchanger of the indoor unit with a small brush to remove the harmful accumulation of dust and breeding bacteria. However, it should be noted that the heat sink is very thin aluminum, which is easy to deform after being stressed, so brush it carefully.

3. Remove the dust from the filter screen. When cleaning the filter screen, cut off the power supply first, and then open the air intake grille; Take out the filter screen, clean the filter screen with water or vacuum cleaner, the water temperature should not exceed 40 degrees, clean it with hot wet cloth or neutral detergent, and then wipe it with dry cloth. At the same time, it is not allowed to clean the filter screen with pesticides or other chemical cleaners.

4. Remove dirt and deposits from the drainage part. The drainage part is easy to deposit dirt, so it must be disinfected thoroughly on a regular basis to ensure smooth drainage and prevent bacterial reproduction.

5. Check others. Comprise a power cord, a plug board and a switch; Check the status of consumable parts, such as air deflector, sterilization and dehumidification, photocatalyst, etc. , to ensure that the air conditioner is in good condition.

Air conditioning maintenance in special period

In March-May and September-165438+10 when the temperature is moderate, people usually leave the air conditioner in a non-working state. In the season when the air conditioner is not used, the power supply of the air conditioner should be cut off first, but it is best to keep the usage once a month to prevent the lubricating oil in the machine from condensing due to long-term non-use. At the same time, in order to ensure the long-term high-speed operation of the air conditioner and the extension of the use task, attention should be paid to the maintenance when the air conditioner is stopped and started to use.

1. After the use season ends. Before stopping using the air conditioner, you can set the air conditioner to the air supply state on sunny days, and turn on the air conditioner for about half a day to make the air conditioner completely dry; At the same time, the dust filter, indoor unit and outdoor unit should be cleaned.

2. Before the season starts. Check whether there are obstacles in the air inlet and air outlet of indoor and outdoor units, so as not to reduce the working efficiency of air conditioning; Install dust filter to prevent dust from entering the machine and causing damage or failure of the machine; The remote control should be cleaned with a dry cloth, not with glass cleaner or cloth containing chemicals. After cleaning, two new batteries of the same model should be installed. [Edit this paragraph] Cleaning methods The cleaning of air conditioners should include three parts: first, the shell and exposed part of the air conditioner body are easy to be polluted; The cleaning of the second filter is the most important part of the core; The third condenser and evaporator, relatively rare, combined with maintenance, is equivalent to cleaning a small system. They are relatively large "operations" and often appear in old air conditioners or "special price machines" and "inferior machines". Quite a few of these air conditioners have no cleaning and maintenance value, so I won't go into details.

The cleaning of the air conditioner shell and corresponding components is very simple. As long as a little soap powder and detergent are added to the clean water, or special air-conditioning cleaning liquid, a considerable part of air conditioners can be cleaned, which meets the cleaning operation requirements. As for the cleaning of household air conditioners, the key part is the cleaning of filter screens. First, open the cover of the air conditioner, take out the filter screen and brush it with a clean filter screen to clean most of the dirt attached to the filter screen. Then soak in the mixed solution containing special air conditioner cleaning solution or self-made cleaning solution or detergent and soap powder for 65,438+00-20 minutes, depending on the dirt on the filter screen. After soaking, gently brush the filter screen with a bottle brush. If it is normal, you can sign for it, and the cleaning work is over. Cleaning the household air conditioner is beneficial to improve the refrigeration efficiency; It is beneficial to improve the refrigeration effect, prolong the service life of household air-conditioning equipment, improve the energy-saving effect and benefit the health of users. The effect is healthier and more ideal than "healthy air conditioning".

Years of practice in the air-conditioning industry have proved that it is best to clean the air conditioner 2-3 times a year. Under normal circumstances, it is reasonable to clean the air conditioner once before starting, once in the middle and once when shutting down. Sometimes, when the air conditioner is turned off, it will go through major cleaning processes such as maintenance, maintenance and cleaning. And the air conditioner is covered with a range hood. When the air conditioner is turned on in the second year, it is cleaner and the filter screen is cleaner. At this time, the air conditioner is cleaned twice a year, which has a good effect, saves labor and costs, reduces operating costs, and does not affect the refrigeration effect. [Edit this paragraph] Precautions for the use of household air conditioners:

First of all, be sure to clean the dust on the air conditioner filter before use.

2. Soak the filter with disinfectant for disinfection.

Third, it is best to use a vacuum cleaner to remove dust from indoor fans before use.

Fourth, open the window and ventilate for a quarter of an hour while turning on the computer every day. When it is used for the first time, it should be ventilated for a period of time to let the bacteria, molds and mites accumulated in the air conditioner be distributed as much as possible.

Five, often disinfect the air conditioning filter.

6. Don't turn on the air conditioner indoors for too long. It is best to open the window frequently for air exchange, reduce the concentration of indoor toxic gases and inject fresh air regularly.

Seven, we should pay attention to adjust the indoor and outdoor temperature difference, generally not more than 8 to 10 degrees Celsius as well.

Eight, it is forbidden to smoke indoors.

Nine, pay attention to the air conditioner in operation, don't spray pesticides or volatile liquids on it, so as to avoid accidents caused by leakage.