The refrigerator, this electrical device that has taken its place in the modern home, has dramatically changed our lifestyle and eating habits since its inception. It provides us with a safe, convenient storage environment to keep our food fresh and delicious. In this article, we will delve into the origin, working principle, types, tips for use, and maintenance methods of refrigerators, so that readers can better understand and use this household appliance.
The history of refrigerators dates back to the early 19th century. At that time, in order to preserve food, it was common to lower the temperature of food by placing ice cubes in wooden or metal containers. With the advancement of technology, the refrigerator has gradually evolved into an independent electrical device. In 1913, the American company Frigidaire introduced the first household refrigerator, which used compressor refrigeration technology to greatly improve the refrigeration effect.
How the refrigerator works
The working principle of the refrigerator is mainly based on the circulation of refrigerants. Under the action of the compressor, the refrigerant changes from a low-temperature and low-pressure state to a high-temperature and high-pressure state, and then dissipates heat through the condenser to become a liquid refrigerant with high temperature and low pressure. The liquid refrigerant then enters the expansion valve, where it is throttled and the pressure decreases and the temperature decreases to become wet steam at low temperatures and low pressures. Finally, the wet steam enters the evaporator, absorbs the heat, and turns into a low-temperature and low-pressure refrigerant, completing a cycle. Through this process, the temperature inside the refrigerator is reduced, which keeps the food fresh.
The type of refrigerator
Classification according to refrigeration method: refrigerators can be divided into direct cooling type and air cooling type. The direct-cooling refrigerator is directly refrigerated through the evaporator, and the refrigeration effect is better, but it is prone to frosting. Air-cooled refrigerators use a fan to blow cold air into the inside of the refrigerator to achieve uniform cooling and are less prone to frosting, but may be slightly louder.
Classified according to the way of opening the door: Refrigerators can be divided into types such as single door, double door, triple door and multiple door. Single-door refrigerators are suitable for kitchens with less space; Double-door refrigerators have a larger capacity and are suitable for home use; Three- and multi-door refrigerators have more partitions for easy sorting and storage.
Tips for using the refrigerator
Reasonable partitioning: Partitioning the inside of the refrigerator and storing different types of food separately can avoid food contamination and help keep food fresh.
Control storage time: Food should not be stored in the refrigerator for too long, especially perishable foods such as vegetables and fruits. It should be consumed as soon as possible to ensure the nutrition and taste of the food.
Regular defrosting: For direct-cooling refrigerators, they should be defrosted regularly to prevent excessive frosting from affecting the cooling effect. At the same time, it is also necessary to clean the inside of the refrigerator regularly to maintain hygiene.
How to maintain your refrigerator
Regular inspection: Regularly check the refrigeration effect, sealing performance and power supply line of the refrigerator to ensure the normal operation of the refrigerator.
Avoid over-positioning: The refrigerator should not be filled with too much food to avoid affecting air circulation and refrigeration. At the same time, avoid putting hot food directly into the refrigerator to avoid increasing the burden on the refrigerator.
Professional maintenance: If you encounter a refrigerator failure, you should contact professional maintenance personnel for maintenance in time to avoid damaging the equipment or affecting the safety of use.
In short, refrigerators, as essential appliances in modern homes, have been deeply integrated into our daily life. By understanding the origin, working principle, types, usage skills, and maintenance methods of refrigerators, we can better use this household appliance and bring more convenience to our lives.
The top 10 refrigerator brands and their detailed introduction:
Haier: Technological innovation: Haier has always been committed to technological innovation, and its refrigerator products have performed well in energy saving, preservation, and silence. The number of global patent disclosures for its refrigerators ranks among the highest in the world, and it has led the formulation of international IEC preservation standards.
Rich product line: Haier offers a wide range of refrigerator products from economy to high-end luxury to meet the needs of different consumers.
Global influence: Haier refrigerators enjoy a high reputation in the world, not only in the Chinese market, but also exported to many countries and regions around the world.
Midea: Quality Assurance: Midea refrigerators are known for their high quality, using advanced refrigeration technology and materials to ensure the performance and durability of the products.
Energy conservation and environmental protection: Midea pays attention to environmental protection and energy saving, and a variety of refrigerator products have obtained energy-saving certifications to help consumers save electricity bills.
Intelligent development: Midea refrigerators have also made breakthroughs in intelligence, such as remote control, intelligent diagnosis and other functions, which have improved the user experience.
Panasonic: Technology leadership: Panasonic has a leading technological advantage in the field of refrigerators, especially in compressors and refrigeration systems.
User-friendly design: Panasonic refrigerators focus on user experience and adopt user-friendly design, such as easy-to-clean panels, large-capacity storage space, etc.
Global service: Panasonic has a complete after-sales service system to provide consumers with professional services worldwide.
Siemens: **10,000 Fans Incentive Program
High-end positioning: Siemens refrigerators are mainly positioned in the high-end market, and the products have excellent performance in terms of design, performance, and materials.
Innovative technology: Siemens continues to introduce innovative technologies, such as zero-degree preservation technology and intelligent sensing system, which improve the freshness and intelligence of refrigerators.
Quality assurance: Siemens refrigerators are known for their high quality and reliability, and have won the trust of consumers.
Rongsheng: Rongsheng refrigerator is a brand of Hisense Kelon, and Hisense Kelon Electric Co., Ltd. is one of the largest white appliance product manufacturers in China. Rongsheng refrigerator has been committed to the research and development, production and sales of refrigerators with the concept of "professional, energy-saving and environmental protection". Its products are rich in variety, including different types of refrigerators such as multi-door, side-by-side, and cross-side, to meet the needs of different consumers. Rongsheng refrigerator has good performance in fresh-keeping technology, energy-saving technology, silent technology and other aspects.
Casarte: Casarte is a high-end home appliance brand under Haier, with artist appliances and embedded integrated kitchen appliances as its core product line. Casarte refrigerators are excellent in terms of design, function, performance, etc., especially its refrigeration and preservation technology, which can effectively maintain the freshness and taste of food. In addition, Casarte refrigerator also pays attention to intelligent and humanized design, so that the user's experience is more convenient and comfortable.
TCL: TCL is a leading global intelligent technology industry group, and its refrigerator products are also highly recognized in the market. TCL refrigerators are loved by consumers for their high efficiency, energy saving, quiet and stable, and large capacity. At the same time, TCL also pays attention to the intelligent and humanized design of products, such as remote control, intelligent diagnosis and other functions, to bring users a better experience.
Hitachi: Hitachi is a world-renowned electronic and electrical company, and its refrigerator products also have a high reputation in the market. Hitachi refrigerators are favored by consumers for their high efficiency, energy saving, stable and reliable, and low noise. At the same time, Hitachi also pays attention to the technological innovation and intelligent design of products, such as the use of advanced refrigeration technology and intelligent control systems, etc., to improve the performance and user experience of products.
Samsung: Samsung is a world-renowned manufacturer of electronic products, and its refrigerator products are also well-known in the market. Samsung refrigerators are loved by consumers for their fashionable design, high efficiency and energy saving, and intelligence. At the same time, Samsung also pays attention to the diversification and differentiated design of products to meet the needs of different consumers.
Toshiba: Toshiba is an electronics manufacturer with a long history and technology accumulation, and its refrigerator products also have a high reputation in the market. Toshiba refrigerators are favored by consumers for their high efficiency, energy saving, stable and reliable, and humanized design. At the same time, Toshiba also pays attention to the technological innovation and intelligent design of products, such as the use of advanced refrigeration technology and intelligent control systems, etc., to improve the performance and user experience of products.
Overall, each of these refrigerator brands has its own features and benefits, and consumers can choose according to their needs and budget.