The history of household appliances, without which it is impossible to imagine any kitchen today, is full of amazing discoveries and names of brave engineers. The question of who exactly created the first refrigerator does not have one simple answer, since the path from the idea of artificial refrigeration to mass production took more than a century and a half. The first attempts to freeze water or cool a room were made long before our era, but a technological breakthrough occurred only in the 19th century, when humanity learned to control the phase transitions of substances.
Many inventors in different parts of the world independently approached the creation of a working prototype. Artificial refrigeration this became possible thanks to the study of the properties of gases and liquids, which, when evaporated, absorb huge amounts heat. It is this physical principle underlying the operation of absorption machines that has made it possible to create devices capable of maintaining low temperatures in a confined space. Artificial refrigeration of compression machines Today we are accustomed to the fact that cold in the chamber appears immediately after turning on the device online, but for our ancestors it was a real miracle. The evolution from bulky glaciers, where tons of natural ice were transported in winter, to compact electrical units is the history of engineering. In this article we will look in detail at how technology developed, who made the decisive contribution and how the modern refrigeration cycle works. Prerequisites for the emergence of artificial refrigeration. Before the invention of mechanical cooling methods, humanity depended on natural resources for millennia. Ice was prepared in winter in reservoirs and stored in special cellars - compression and absorption machines, made it possible to create devices capable of maintaining low temperatures in a confined space.
Today we are accustomed to the fact that cold appears in the chamber immediately after turning on the device, but for our ancestors this was a real miracle. The evolution from bulky glaciers, where tons of natural ice were transported in winter, to compact electrical units is the history of engineering. In this article we will take a detailed look at how technology developed, who made the decisive contribution and how modern technology works. refrigeration cycle.
Prerequisites for the appearance of artificial cold
Before the invention of mechanical cooling methods, humanity depended on natural resources for millennia. Ice was prepared in winter in reservoirs and stored in special cellars - glacierscarefully insulated from heat. However, this method was seasonal, labor-intensive and did not allow temperature control with high accuracy, which often led to spoilage of products.
The first scientific observations of cooling processes began in the 17th-18th centuries. Scientists have noticed that some salts, when dissolved in water or snow, cause a sharp drop in temperature. This effect was used to make ice cream and cool drinks in aristocratic homes, but creating a continuous cooling cycle was not yet possible.
⚠️ Warning: Early experiments with chemical reactions to produce cold were often dangerous. Caustic substances were used, which, if leaked, could cause serious harm to health and damage building structures.
By the beginning of the 19th century, physicists already well understood the relationship between gas pressure, volume and temperature. It became obvious that if you compress a gas, it will heat up, and if you allow it to expand sharply, it will cool down. Thermodynamic cyclesdescribed at that time became the theoretical basis for future inventors who tried to translate this knowledge into metal.
Jacob Perkins and the 1834 patent
Officially, the first person to receive a patent for a device for artificial refrigeration is the American inventor Jacob Perkins. In 1834, he introduced the world to a machine that worked on the principle of steam compression. Although his device was more reminiscent of a complex industrial installation rather than a household appliance, it laid the foundation for the entire industry.
Perkins' design used ether as a refrigerant. The substance evaporated in a vacuum chamber, taking away heat, then the vapor was compressed by a compressor, turned into liquid and returned to the evaporator. It was a closed cycle, which theoretically could work indefinitely, if not for the technical limitations of the materials of that time.
- 🧊 Operation principle: Use of a volatile liquid (ether) to transfer heat from one zone to another.
- ⚙️ Mechanical part: Hand or steam pump to create pressure in the system.
- 📉 Result: The possibility of producing ice on an industrial scale, which was a revolution for that time.
Despite the genius of the idea, Perkins' machine was not a commercial success. It was too bulky, noisy and a fire hazard due to the use of ether. However, it was Jacob Perkins who is often called the “father of the refrigerator,” since he was the first to prove the performance of the compression cycle in practice. What is most important to you in a refrigerator? Energy efficiency data-i="78">Capacity compression cycle in practice.
The contribution of Ferdinand Carré and absorption technologies
In parallel with the development of compression machines in France was working on alternative cooling methods. In the 1850s, Edmond Carré and his brother Ferdinand Carré created a device that did not require a mechanical compressor. Their invention was based on absorption, where the circulation of the refrigerant was ensured by heating rather than an electric motor.
The Carré brothers' car used a mixture ammonia and water. Ammonia, being highly volatile, evaporated when heated and was then absorbed by water in the absorber. This process made it possible to create cold without moving mechanical parts, which made the device quieter and more reliable in operation, although less efficient compared to its compressor counterpart.
Carré's invention found wide application in industry and transport. Absorption refrigerators have long been used in trains and hotels where compressor noise was undesirable and the heat source (gas or kerosene) was more accessible than electricity. This direction has become an important branch of the evolution of refrigeration technology.
Why is ammonia dangerous?
Ammonia is toxic and explosive at certain concentrations. A leak in a household appliance could be fatal, so modern home refrigerators use other refrigerants, and ammonia is used only in industrial installations or sealed absorption models with special safety measures.
Carl von Linde and the beginning of the era of electrification
The real breakthrough into mass production occurred thanks to a German engineer Carl von Linde. In the 1870s, he improved the compressor design, making it more compact and reliable. Linde was the first to begin mass production of refrigeration machines for breweries and meat processing plants, which made it possible to radically change food logistics.
The most important stage was the advent of electric motors. When compressors began to be driven by electric motors, refrigerators no longer depended on steam engines or manual labor. In the 1890s, the first prototypes of household electric refrigerators appeared, although they cost exorbitant amounts of money and were available only to the richest segments of the population.
Karl von Linde also played a key role in the standardization of refrigerants. He actively promoted the use of sulfur dioxide on an industrial scale, developing technologies for their safe condensation. His name has become a household name in the engineering community, and companies bearing his name are still leaders in the cryogenic equipment market. ammonia and sulfur dioxide on an industrial scale, having developed technologies for their safe condensation. His name became a household name in the engineering community, and companies bearing his name are still leaders in the cryogenic equipment market.
| Inventor | Year | System type | Refrigerant |
|---|---|---|---|
| Jacob Perkins | 1834 | Compression | Ether |
| John Gorrie | 1850 | Compression (air) | Air |
| Ferdinand Carré | 1859 | Absorptive | Ammonia/Water |
| Carl von Linde | 1873 | Compression | Methyl ether |
Hazardous refrigerants and the transition to freon
Despite technical progress, household refrigerators of the early 20th century remained extremely dangerous. Sulfur dioxide, methyl chloride and ammonia were used as the working fluid. These substances were toxic, had a pungent odor, and if leaked could cause poisoning or even an explosion. Each such refrigerator in the house was a potential time bomb.
The situation changed dramatically in the 1930s, when the company General Motors in collaboration with chemists, developed new synthetic gases, which received the trade name freons. These substances were inert, did not burn, had no odor and were safe for humans at household concentrations. This discovery allowed refrigerators to become a truly mass product.
⚠️ Attention: Modern environmental standards prohibit the use of many older types of freons (for example, R12) due to their destructive effects on the ozone layer. When repairing old equipment, it is necessary to use approved analogues.
The transition to safe refrigerants stimulated a boom in sales. If in the 10s of the 20th century refrigerators were a curiosity, then by the 1950s they became a mandatory attribute of American and European cuisine. Engineers were able to focus not on safety, but on improving thermal insulation, compressor efficiency and ease of use.
☑️ Signs of a refrigerant leak
Design and evolution of the compressor
The heart of any refrigerator is the compressor. It is this unit that creates the pressure necessary to circulate the refrigerant through the system. In the first models, the compressors were piston and operated quite noisily, transmitting vibration to the entire body of the device. Over time, the design was improved: crank mechanisms appeared, the lubrication system was improved.
An important step was the creation hermetic compressors, where the motor and pump are enclosed in a single welded casing. This eliminated coolant leaks through seals and shafts, a common problem with open designs. Sealing also made it possible to use the refrigerant itself to cool the windings of the electric motor, increasing efficiency.
Modern refrigerators are increasingly equipped with inverter compressors. Unlike traditional ones, which operate in an “on-off” mode, inverters smoothly regulate power. This allows you to maintain the temperature with an accuracy of a degree, reduces energy consumption and noise levels. The technology came from the world of air conditioners and became a new quality standard.
Frequently asked questions (FAQ)
Why did not the first Perkins refrigerator become popular immediately?
Perkins' machine was too complex, expensive and used fire-hazardous ether. Metal and sealing technologies in the 1830s did not allow the device to be compact and safe for home use. It found application only in industry much later.
When did refrigerators appear in ordinary homes?
The mass distribution of electric refrigerators in everyday life began in the 1930s, after the invention of safe freon and the establishment of mass production in the USA and Europe. In the USSR, the mass model “ZIS” (the future “Moskvich”) appeared only in the post-war period.
Can a glacier be considered the first refrigerator?
A glacier is the predecessor of a refrigerator, but not the refrigerator itself. He used reserves of natural cold (ice), rather than generating it artificially. The fundamental difference is the presence of a mechanical or chemical cooling cycle in the refrigerator.
What gas is used in modern refrigerators?
Today the most commonly used refrigerants are R600a (isobutane) and R134a. They are safe for the ozone layer, unlike old freons. Isobutane also has excellent refrigeration properties and low energy efficiency.
Who invented the two-chamber refrigerator?
The division into freezing and refrigerating chambers occurred gradually. The company was one of the first to produce two-chamber models General Electric in 1939 (Monitor-Top model), which made it possible to store frozen and refrigerated foods separately.