How to see if the air conditioner is good or bad? How to check the quality of the air conditioner

Inverter air conditioner is based on ordinary air conditioner, which selects a special compressor for inverter, and adds a variable frequency control system. Its basic structure and refrigeration principle are exactly the same as those of ordinary air conditioners. The host of the inverter air conditioner is automatically continuously variable speed, which can automatically provide the required amount of cold (heat) according to the room situation; When the indoor temperature reaches the desired value, the air withering host will operate at a constant speed that can accurately maintain this temperature, so as to achieve "non-stop operation", so as to ensure the stability of the ambient temperature.

To put it simply, an inverter air conditioner is to add an inverter to the structure of a conventional air conditioner. The compressor is the heart of the air conditioner, and its speed directly affects the efficiency of the air conditioner, and the inverter is the control system used to control and adjust the speed of the compressor, so that it is always in the best speed state, so as to improve the energy efficiency ratio (20% 30% more energy-saving than the conventional air conditioner). Inverter air conditioner has the following characteristics:

The starting current is small, the speed is gradually accelerated, and the starting current is 1 7 of the conventional air conditionerThere is no problem of hot and cold, because the inverter air conditioner gradually reduces the speed as the temperature approaches the set temperature, gradually reaches the set temperature and maintains a low-frequency operation balanced with the loss of cooling capacity, so that the indoor temperature remains stable; The noise is lower than that of conventional air conditioners, because the inverter air conditioner uses a double-rotor compressor, which greatly reduces the cyclotron unbalance, so that the vibration of the outdoor unit is very small, about 1 2 of the conventional air conditionerThe speed of cooling and heating is 1 2 times faster than that of conventional air conditioners. The inverter air conditioner adopts electronic expansion throttling technology, and the microprocessor can control the opening degree of the valve according to the information collected by the temperature sensors installed in the inlet and outlet of the expansion valve, the suction pipe of the compressor, etc., so as to achieve the purpose of rapid cooling and heating.

If you use air conditioners frequently and for a long time, then you can consider selling inverters, and if you don't use air conditioners much, use fixed-frequency ones. The inverter will be reduced to low-frequency operation when the temperature is close to the set temperature, the power becomes smaller, the energy efficiency ratio is improved, and the temperature fluctuation is small, which is basically stable, which is both energy-saving and comfortable, which is the advantage of inverter; The fixed frequency will not reduce the frequency, the power is the same until the set temperature is reached, until the set temperature is stopped, and then the machine is turned on to cool after the temperature rises, and the temperature fluctuation is not energy-saving. However, the frequency conversion can only show the effect of energy saving in long-term use, and there is little difference between the frequency conversion and the fixed frequency in a short time.

Brands can consider Gree, Midea, Haier, these big brands, the quality is the best.

Judging by the following three criteria.

1. Judge the quality of the air conditioner - the amount of cooling (heat).

The heat removed from the confined space by the air conditioner in the unit time of refrigeration (heat) operation, the legal unit of measurement w, the national standard stipulates that the actual cooling capacity of the air conditioner shall not be less than 95 of the rated cooling capacity.

2. Judge the quality of the air conditioner - look at the energy efficiency ratio.

The energy efficiency ratio, also known as the coefficient of performance, refers to the ratio of refrigeration capacity to refrigeration power during the operation of air conditioner refrigeration, in w w. The national standard stipulates that the standard value of the energy efficiency ratio of 2500W air conditioner is; The standard value of energy efficiency ratio of 2500W to 4500W air conditioner is, at present, it is an energy consumption ratio that must be achieved by a first-class energy efficiency air conditioner, and experts from Comfort 100 Network remind consumers that when purchasing energy-saving air conditioners, they should choose air conditioners with high energy consumption ratio as much as possible, and the higher the value represents the product in the process of daily use, which is more energy-saving.

3. Judge the quality of the air conditioner - the noise level.

The noise generated when the air conditioner is running is mainly generated by the internal evaporator and the external condenser. The state stipulates that the noise of the indoor unit of the air conditioner with a cooling capacity of less than 2000W shall not be greater than 45 decibels, and the noise of the outdoor unit shall not be greater than 55 decibels; The noise of the indoor unit of the split air conditioner from 2500W to 4500W is not more than 48 decibels, and the noise of the outdoor unit is not more than 58 decibels.

Approaching the hot summer, it is the peak season for air conditioning sales, and it is also the peak period for consumers to buy air conditioners. Many consumers are often confused when faced with a variety of products in the store, what kind of air conditioner is worth buying? What kind of products are worth buying for consumers?

What are the characteristics of the products that can see the advantages and disadvantages of air conditioners?

With these questions, Moon Rabbit brought you ten standards for testing the advantages and disadvantages of air conditioners.

1. Whether to use a brand-name compressor, the compressor is the heart of the air conditioner, and a good heart is of course important.

2. Whether to use high-quality and efficient heat exchangers, such as hydrophilic membrane trapezoidal aluminum re-entry sheets, internally threaded copper pipes, etc.

3. Whether to use a large wind wheel with no finger leakage or equidistant cross-flow fan blade and step-driven wind pendulum to achieve ultra-quiet design.

4. Whether it is super forced cold (hot) and quickly reaches the set temperature.

5. Whether the appearance of the product is beautiful and whether it is harmonious and unified with the home environment.

6. The cooling (heat) capacity of the product, choose the appropriate cooling (heat) capacity according to the area of the room.

7. Whether the product is power-saving, generally speaking, the higher the refrigeration (heat) capacity, the lower the input power, the more power-saving the product.

8. The length of life. Whether it adopts microcomputer fuzzy control to achieve non-stop operation, whether it can be automatically defrosted.

9. Look at the noise index of the product.

10. Whether there is a low voltage automatic compensation function and a wide voltage working range.

Through the above subtle differences, you can better understand the quality of an air conditioner.

To understand the model of the air conditioner, you can start from the following five aspects:

1.Brand and manufacturer: Look at the logo or signage on your air conditioner, which usually lists the brand and the name of the Rough Crafting manufacturer. Common air conditioner brands include Midea, Gree, Haier, etc.

2.Model Number: The air conditioner model number can usually be found on the air conditioner's logo or signage. It is a specific code that is used to distinguish between different models of air conditioners. Model numbers usually contain a combination of letters and numbers.

3.BTU hours: BTU (British Thermal Unit) is a common unit used to measure the cooling and heating capacity of an air conditioner.

The model of the air conditioner will usually indicate the BTU hour values for its cooling and heating. A higher BTU hour value indicates that the rock key air conditioner has a greater cooling and heating capacity.

4.Energy efficiency rating: The energy efficiency rating of an air conditioner is used to indicate its energy efficiency level.

Energy efficiency ratings are typically measured in terms of energy efficiency ratio (EER) or seasonal energy efficiency ratio (SEER). The higher the energy efficiency rating, the more efficient the air conditioner is able to use energy during use.

5.Functions and features: The model of the air conditioner can also reflect its functions and characteristics. Different models of air conditioners may have different functions, such as dehumidification, mute, smart control, etc. These functions and features can be found in the model information.

Summary: Know the model of your air conditioner, focusing on the brand and manufacturer, model number, BTU hours, energy efficiency rating, and functions and features. With this information, it is possible to gain insight into the cooling and heating capacity, energy efficiency levels, and other characteristics of the air conditioner.