Why can't the refrigerator door close?

The reason why the refrigerator door can't be closed: the door seal or the door body is aging and deformed.

If the door seal is deformed, you can use a household hair dryer to blow it soft, and then adjust the door seal to make it closely combined with the box. If the door sealing strip is detachable, it can also be removed, cleaned and shaped before installation.

Refrigerator is a kind of refrigeration equipment to keep a constant low temperature, and it is also a civilian product to keep food or other items at a constant low temperature. There are compressors, ice makers, cabinets or boxes for refrigeration, and there are storage boxes with refrigeration devices in the boxes.

The volume of domestic refrigerators is usually 20~500 liters. 19 10 the world's first compressed refrigeration household refrigerator came out in the United States. 1925 Lido Company of Sweden has developed a household absorption refrigerator. 1927 the general electric company of the United States has developed a fully enclosed refrigerator. 1930, air-cooled continuous diffusion absorption refrigerators with different heating methods were put on the market. 193 1 year, a new refrigerant freon 12 was successfully developed. Domestic thermoelectric refrigerators began to be produced in the second half of 1950s, and refrigerators began to be produced in China in 1950s.

Working principle:

According to the statistical analysis of the Analysis Report on Market Prospects and Investment Opportunities of Refrigerator Industry in China 20 13-20 17, refrigerators have the following nine working principles according to different classifications:

1. compression refrigerator: this refrigerator is provided with mechanical energy by a motor and acts on the refrigeration system through a compressor. The principle of refrigeration system is that the refrigerant with low boiling point absorbs heat when it evaporates. Its advantages are long service life and convenient use. 9 1~95% refrigerators in the world belong to this category. Commonly used refrigerators use a refrigerant called R600 refrigerator A as a hot "porter" to carry the "heat" in the refrigerator to the outside of the refrigerator.

2. absorption refrigerator: this refrigerator can use heat sources (such as gas, kerosene, electricity, etc.). ) as a driving force. Ammonia-water-hydrogen mixed solution realizes refrigeration in the process of continuous absorption-diffusion. Its disadvantages are low efficiency and slow cooling, which has been gradually eliminated.

3. Semiconductor refrigerator: it is a refrigerator that uses the principle of applying direct current to PN semiconductor to produce Peltier effect at nodes to realize refrigeration.

4. Chemical refrigerator: it is a refrigerator that uses some chemicals to absorb heat strongly when they are dissolved in water to obtain refrigeration effect.

5. Electromagnetic vibration refrigerator: It is a refrigerator with electromagnetic vibration machine as the main power to drive the compressor. Its principle and structure are basically the same as that of the compression refrigerator.

6. Solar refrigerator: It is a refrigerator that uses solar energy as refrigeration energy.

7. adiabatic demagnetization refrigeration refrigerator.

8. Radiant refrigeration refrigerator.

9. Solid refrigeration refrigerator.

Refrigerator is a kind of refrigeration equipment to keep a constant low temperature, and it is also a civilian product to keep food or other items at a constant low temperature. There are compressors, ice makers, cabinets or boxes for refrigeration, and there are storage boxes with refrigeration devices in the boxes.

The volume of domestic refrigerators is usually 20 ~ 500 liters. 19 10 the world's first compressed refrigeration household refrigerator came out in the United States. 1925 Lido Company of Sweden has developed a household absorption refrigerator. 1927 the general electric company of the United States has developed a fully enclosed refrigerator. 1930, air-cooled continuous diffusion absorption refrigerators with different heating methods were put on the market. 193 1 year, a new refrigerant freon 12 was successfully developed. Domestic thermoelectric refrigerators began to be produced in the second half of 1950s, and refrigerators began to be produced in China in 1950s.

The first refrigerator with motor-driven compressor was invented by Swedish engineers Brighton and Mendes in 1923. Later, an American company bought their patent and produced the first batch of household refrigerators at 1925. In the first refrigerator, the electric compressor and the refrigerator were separated, and the latter was usually placed in the cellar or storage room of the family and connected with the electric compressor through pipes, and then they were combined into one. Before 1930s, most refrigerants used in refrigerators were unsafe, such as diethyl ether, ammonia water and sulfuric acid. Flammable, corrosive or irritating. Later, I started looking for a safer refrigerant and found Freon. Freon is a non-toxic, non-corrosive, non-flammable fluorine compound, which quickly became the refrigerant of various refrigeration equipment and has been used for more than 50 years. However, it has been found that freon has a destructive effect on the ozone layer of the earth's atmosphere. So people began to look for new and better refrigerants.