What was the first refrigerator: history of creation and evolution

The history of food refrigeration goes back thousands of years, long before the advent of electricity. Ancient civilizations used natural ice, snow, and underground storage to preserve food. However the first refrigerator in the modern sense of the word it appeared only in the 19th century, becoming the result of long experiments with physics and chemistry.

It is difficult to imagine that people once depended on freezers, who collected blocks of ice in winter to store them in special basements until the summer. The invention of artificial cold was a real breakthrough that changed cooking, medicine and everyday life. It was from this moment that the technology race began, which led us to modern No Frost systems.

In this material we will look at who exactly created the first working refrigeration unit based on compression, how refrigerants changed and why old models were hazardous to health. You will learn how the design of the refrigeration chamber has evolved from a simple box with ice to a complex electronic mechanism.

Predecessors of electricity: ice cabinets

Before the advent of electric units, the main method of storing food was ice cabinet. This device was a wooden box, often lined with zinc or tin inside, with double walls. An insulating material was placed between the walls: cork, sawdust, straw or felt.

The principle of operation was elementary: a block of natural ice was placed in the upper part of the cabinet, sometimes sprinkled with salt to enhance the effect. Cold air, being heavier than warm air, fell down, cooling the food. Melt water collected in a tray, which required regular cleaning.

⚠️ Attention: Ice cabinets did not produce cold on their own, but only stored it. Efficiency depended on the quality of insulation and the frequency of replacing ice, which was an expensive shortage in the summer.

Despite their simplicity, such designs had a number of disadvantages. The temperature inside rarely dropped below +5...+7°C, which was not enough for long-term storage of meat or fish. In addition, the high humidity inside the chamber contributed to the growth of bacteria and the appearance of mold.

Why did ice cabinets disappear?

With the advent of electricity and the mass production of compressors, the cost of artificial refrigeration fell sharply. Ice cabinets have become economically unprofitable and inconvenient due to the need for constant maintenance and dependence on ice supplies.

The birth of artificial cold: the first experiments

History artificial cooling began with scientific experiments in the 18th century. Scottish professor William Cullen in 1756 demonstrated the production of ice by pumping ether vapor from under a bell. This was the first documented use of liquid evaporation to produce cold.

However, these experiments found practical application much later. In 1834, American Jacob Perkins created the first closed-loop system powered by ether. His machine could produce ice continuously, but was bulky, expensive and a fire hazard. Ether was easily flammable, which made the use of such machines in residential buildings impossible.

In the middle of the 19th century, safer, but still dangerous, refrigerants appeared. Engineers experimented with ammonia, sulfur dioxide and methyl chloride. These substances made it possible to create effective compression installations, but their leakage could lead to poisoning or explosion.

• 🧊 1756 —William Cullen first produces artificial ice in the laboratory.
• ❄️ 1834 —Jacob Perkins patents the first closed-cycle machine.
• ⚙️ 1850s —Ferdinand Carre creates an absorption refrigerator running on gas.
• 💨 1870s —Carl von Linde develops the first efficient compressor cycle.

It is important to note that the first machines were created not for everyday life, but for industry: breweries, meat processing plants and freezer warehouses. Only by the beginning of the 20th century did engineers start thinking about miniaturizing technologies for ordinary apartments.

Who invented the first electric refrigerator?

The question of who exactly created the first household refrigeratorremains a matter of debate, since several inventors worked in parallel. In 1911, American engineer Fred Wolf received a patent for the device DOMELRE (DOMestic ELectric REfrigerator). It was a wall-mounted unit that was installed on a regular ice cabinet.

However, the real breakthrough was the invention of Christian Strinstedp and Alfred Mellows. In 1915, they introduced the model Frigidairewhich became the first completely autonomous household refrigerator. In it, the compressor, condenser and evaporator were combined into a single sealed housing.

In parallel, in Sweden, engineers Baltzar von Platen and Karl Munters developed a revolutionary one in 1922. absorption refrigerator. Its uniqueness lay in the absence of moving mechanical parts. It worked on electricity or gas, using the principle of gas diffusion, and was absolutely silent.

Mass production began in the 1920s, but the devices remained a luxury. They cost as much as a car and consumed enormous amounts of electricity. Only by the 1930s, with the advent of safe Freon, refrigerators began to rapidly conquer kitchens around the world.

The evolution of refrigerants: from ammonia to freon

Safety was the main brake development of refrigeration technology. Early models used toxic and flammable substances. Ammonia (NH3) had a pungent odor and was poisonous, sulfur dioxide (SO2) caused suffocation, and methyl chloride (CH3Cl) exploded upon contact with air.

The situation changed in 1928, when the company General Motors tasked chemist Thomas Midgley Jr. to find a safe replacement. Two years later, dichlorodifluoromethane was synthesized, which received the trade name Freon-12 (R-12). It was non-flammable and odorless under normal conditions.

⚠️ Attention: Although freons solved the problem of safety in everyday life, it was later discovered that they destroy the Earth's ozone layer. Since the late 1980s, their production has been limited by the Montreal Protocol.

Modern refrigerators operate on new types of refrigerants, such as R600a (isobutane). This gas is of natural origin, it does not destroy the ozone layer and has excellent refrigeration properties. However, isobutane is flammable, which requires manufacturers to increase the tightness of the system and use intrinsically safe electronics.

The design of the first models versus modernity

If you look inside the first electric refrigerator, you may be surprised at its primitiveness. The compressor was often located directly in the living room or attic, and a long pipeline led to the chamber. The internal space was not divided into zones, and the freezer was a small compartment for ice.

Modern devices are complex computerized systems. Inverter motors adjust rotation speed depending on the load, saving energy and reducing noise. The system No Frost automatically removes moisture, eliminating the need for defrosting.

Let's compare the key characteristics then and now:

The influence of the refrigerator on society and culture

The emergence of an affordable refrigerator has radically changed the nutritional structure of mankind. The need to buy groceries every day has disappeared. It became possible to stock up, freeze semi-finished products and store leftover food without the risk of poisoning.

This also affected logistics and trade. Products began to be transported over vast distances, which allowed residents of northern latitudes to eat fresh fruits and vegetables all year round. Food culture has also changed: new dishes requiring refrigeration and the frozen food industry have emerged.

In the 1930s and 40s, the refrigerator became a symbol of status and prosperity. Advertising of the time portrayed it as a technological miracle that relieved the home cook of drudgery. Today it is an integral attribute of any kitchen, without which it is impossible to imagine a comfortable life.

Frequently asked questions about the history of refrigeration equipment

Why were the first refrigerators called "glaciers"?

The term "icebox" stuck with the first models because they were actually improved versions of wooden cabinets that still had to be loaded with ice. Even when the electric motor appeared, the name was used by inertia for decades.

Were the first refrigerators safe for children?

Absolutely not. The doors of older models, especially those manufactured before the 1950s, had mechanical latches that locked from the outside. A child who climbed inside while playing could not open the door from the inside, which led to tragic cases of suffocation. It was after a series of tragedies that magnetic seals were introduced.

When did internal lighting appear in refrigerators?

The first lamps appeared in the 1920s, but became widespread only in the 1930s and 40s. Before this, they used to open the door in daylight or use an external source. Incandescent lamps in refrigerators remained until recently, until they began to be replaced by LED backlighting.

Is it still possible to buy an ammonia refrigerator?

Yes, absorption refrigerators using ammonia mixture are still produced, mainly for motorhomes, campers and hotels. They operate silently and can be powered by gas, which is convenient in the absence of electricity, but their efficiency is lower than that of compressor analogues.