Refrigerator Structure and Operation

Single door refrigerator types, and is described as no-frost freezer, principles of operation are specified in detail.

Classic refrigerators (single-door refrigerator)

This type of refrigerator-type refrigerators are started first used commercially.

Classic Refrigerator Structure

The operating principle of all single-door cooler is the same as in household refrigerators.Compressor, refrigerant that absorbs the refrigerant gas. Also gas pushes the condenser. The temperature and pressure of the gas increases. The temperature of the gas is taken up by the condenser and the gas liquefies. Liquefied gas drier (filter) filtering absorbs moisture and acid, the dust and other solids. Cleaning liquid refrigerant reaches the refrigerant through capillary. That the volume of refrigerant gas suddenly expands and the pressure of the vacuum decreases. Refrigerant in the low pressure liquid turns into a gas, during which the temperature is around. Receipt of cooler temperatures mean cool here. The EVAP (cooler) evaporating gas absorbed by ekovatlar condenser prints and the event would be repeated. As it understood from the schematic diagram of those articles and thrown out of the condenser heat from the coolant. in cold weather settling in cooler cabinets, hot air rises and cool bottom of the cabinet volume to be cooled by the coolant it can be ensured.

Classic Refrigerator Working principle

Household type refrigerators ekovatlar a thermostat connected in series, in addition to the electrical schematic diagram of the circuit earlier ekovatlar button and parallel to the main circuit and a lamp. In this circuit, auxiliary relay coil activates, deactivates. Thermal protects against overcurrent relays and motor windings. Thermostat, the coldness of the closet, set it on again, stop the ekovatlar degree. Lamp button is connected to the movement of the closet door opened the closet door when the ignition is switched off. Lights lighting the lamp. The closet door opening allows the lamp to go out when the ignition is switched off.

Classic Refrigerator Wiring diagrams

gas path of the classic scheme in the following ways refrigerators and electrical circuit diagrams are given.

Classic Bozdolab Gas Road Scheme

Figure 2.1: gas path diagram for conventional refrigerators

Classic Bozdolab Electric Scheme

Figure 2.2: electrical diagram for conventional refrigerators

Classic Refrigerator Features

This uniqueness of the doors of refrigerators and freezers also serves snow. This feature is not available in non-frost refrigerators. Today, these kinds of refrigerators are no longer used in the home (only office-type refrigerators).

Deep Freezer Refrigerator

Deep Freezer Refrigerator Structure

Single door refrigerators are different compared to classical. It shows some structural changes compared to conventional refrigerators.

Deep Freezer Refrigerator Working principle

The only difference from closets, some cooled condensers and oil coolers is two. Coolers are connected in series to each other. Ecowatt absorbs gas from the cooler, then the first press to the first condenser. Gas, heat from the condenser throwing it becomes liquid. The first condenser outlet refrigerant passes through the liquid is connected to the pipe at the bottom ekovatlar ekovatlar ekovatlar base oil evaporates again absorbs the heat. throwing the heat from the gas in the second condenser turns into a fluid again. Gas, drier and takes heat around the capillary through evaporation cooler. ekovatlar absorbed by the refrigerant in the vapor is pressed again, condenser and cooling cycle is repeated.

Deep Freezer Refrigerator Connection Diagrams

Freezer principle of the scheme refrigerators and electrical diagram is shown below.

Deep Freezer Bozdolab Gas Road Scheme

Figure 2.3: Deep freezer airflow inside the refrigerator and gas path scheme

Deep Freezer Bozdolab Electric Scheme

Figure 2.4: Electrical principle circuit diagram of the fridge with a freezer

Deep Freezer Refrigerator Features

Single door heaters in different partitions of the electrical circuit of the cabinet and sub-cooling (evap) has a heater. Two closets of engines would be larger than the single engine closets, relays and thermal power on the engine is great. The upper bin (freezer) low temperature (-5 to -25 0C) in the intermediate chamber when the temperature drops accordingly. Moisture in the air, which makes sweating concentrating on hair partition profile. This event is prevented by placing a heater sweating.The heater is connected in parallel to the circuit as seen from the figure 2.3. Most double closets in place at one end of the heater ekovatlar pressure end and the other end is passed through a pipe connected to the condenser inlet end here. An intermediate space being provided to cool the gas takes place by heating. Ekovata stop when activated. Approximately 4000 is around 4500 Ω.Ekovata series, is connected in parallel to other circuits. As will be seen from Figure ekovatlar actuation of the thermostat contacts are closed, current, heating mantle is in short-circuit. Current does not pass through the heater will follow a short path and runs through the ekovatlar the thermostat. When the cooling thermostat contacts open lockers. In this case, current, thermal resistance, respectively from the main windings of the motor and completes the circuit through the relay. Evap snow melts the bottom heater. Turn off the ignition when the thermostat starts to cool again. The heater is switched off.

“Why it does not work even though the current is passed from the engine?” The question may come to mind. P = U² / R from the 220² / 4300 = 11 W and I = P / U = 11/220 = 0,05 located.ekovatlar the current value does not constitute a coil in the magnetic field. Therefore ekovatlar and relay work.

No-Frost Refrigerator

No frost refrigerators, gas, each compressor cooling system circuit components are available, the only difference evaprat the heating element and on the surface area of these resistors and generating circuit has a time relay.

No-Frost Refrigerator Structure

gas cycle of No-Frost closet is like any other cabinets. Ekovata gas condenser, drier , cooling is provided by circulating coolant through. However, with the help of forced cooling it is distributed as a fan of the hidden and cold upper and lower sections. The upper part of the cabinet freezer section is small and this air is blown over. At the bottom adjusting the air blown by setting the klepe obtain the desired coolness.

No-Frost Refrigerator Working Principle

No-Frost refrigerators that defrost feature works by heating and evaporating cooling elements in some time on the ice melted compressor.

No-Frost Refrigerator Connection Diagrams

Frost Bozdolab Gas Road Scheme

Figure 2.5: The airflow within the cabinet No-Frost and gas path schematic diagram (1.ekovat 2 3 evap condenser (cooler) 4.tim (timer) 5.for drain hose 6. 7. klepe)

Frost Bozdolab Electric Scheme

Figure 2.6: No-Frost electrical schematic diagram of the closet

Figure 2.6 1 branch current thermostat completes the circuit through ekovatlar and timer. Ekovatlar timer stops and activates the heater at certain times. 2. If the current is divided into two arms of the button again. It depends on the movement of the door. The current cuts the fan when the door is opened. Why go to reduce the cold air outside the cabinet. It gives energy to light for illuminating the closet with the opening of the door. 3. If the arm is complete flow through the heater timer circuit.Timer, ekovatlar in the cooler by giving energy to the heater is stopped (the evap) melting snow can be ensured. snow and ice in front of the Cabinet will have been passed in this way.

Note: The figure is a general principle. various models of each brand is different wiring diagrams.connection of terminals unknown cabinets should be done according to the scheme that were obtained in connection diagram of cabinets.

No-Frost Refrigerator features

No-frost refrigerators, is different from the operation of the other static cabinet. in normal refrigerators, freezer section, the moisture of the food by moisture entering the refrigerator door is opened causes the formation of ice in the freezer compartment. for melting snow and ice formed in certain time intervals, stopping the refrigerator, pass out of nutrients needed to preserve the coolness during this process is required to perform tasks such as cleaning the accumulated ice. In No-Frost cabinet, the situation is completely different. dry and cold air cooler and freezer section is blown by the fan support from many points as homogeneous. With all your food cold crumbling even as homogeneous as it provides the shelf to cool evenly and smoothly, it does not allow moisture and ice formation. Therefore you have mechanical your fridge No-Frost, allows large volumes of image and aesthetics as well as a great ease of use to you.

Source: MEGEP, Refrigerator varieties and Refrigerator Connection Diagrams.

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