The scheme of regulation of the temperature in the refrigerator (options)

 

(57) Abstract:

The invention is intended for use in refrigeration, in particular to regulate and maintain the temperature in a home refrigerator connected in series with the evaporator of the freezing and refrigerating chambers. In the last set fan associated with the evaporator. In the first embodiment, the circuit includes an electronic controller or microprocessor and temperature sensors installed in the camera. The second option scheme contains termoizolator, sensors are installed in the refrigerating chamber to control the operation of the compressor, and in the freezer for controlling operation of the fan. Electronic device or thermostat when the temperature drops in the freezer below the established indicators turn off the fan. The temperature in the refrigerating chamber is lowered to turn off the compressor. After disabling special device at a particular time includes a fan for use accumulated in the evaporator of the freezing chamber cold. The invention provides independent control of temperature in the chambers. 2 S. and 1 C.p. f-crystals, 2 Il.

For simplicity, the present description is given for a household refrigerator containing the freezing and refrigerating chambers.

In the present case, namely for a household refrigerator, the refrigerator includes a compressor, resulting in the operation of evaporators connected in series, one of which is located in the freezer and connected to the fan, and the other static, is located in the refrigerating chamber.

In the refrigerator of this type, the temperature in the freezer is regulated mainly by two methods.

One of these methods is that the temperature in the cells is regulated based on the temperature in the refrigerating chamber temperature sensitive element which is installed on the evaporator of the refrigerating chamber.

A significant drawback of this scheme adjustment is the fact that this scheme may not provide optimal temperature simultaneously in the refrigerating and freezing chambers at different modes of operation of the refrigerator, which leads to the lowering of the freezing capacity freezer. When laying in the freezer of new products to a temperature of compressor shut-off thermostat is much slower than when the refrigerator is in the storage mode, so the operating time of the compressor increases, and the temperature in the refrigerating chamber is reduced, and lowering it below the 0oWith is unacceptable. Because of this cooler with this scheme adjust the temperature lowered freezing capability. Another disadvantage is the slow lowering of the temperature in the refrigerating chamber when the output mode, which reduces the term of the guaranteed preservation of quality products. Lowering the temperature in the refrigerating chamber automatically lowers the temperature in the freezer, which leads to higher energy consumption. In addition, the accumulating error arising in the manufacture of various parts of the circuit, causes a disturbance of the balance of temperatures (-18oWith in the freezer and +5oWith in the refrigerating chamber) between the freezing and refrigerating chambers, thereby resulting in instability of the technical characteristics in terms of mass production.

Another method of temperature control is the use of electromagnetic valve. This method is complicated in technical execution and expensive.

The closest to this invention is nl. 16.08.90 year). The disadvantage of this scheme is that the temperature in the refrigerating compartment is achieved by a complex interaction between the evaporator, which cools the air in the refrigerating chamber, a Heater, which heats the same air, and a fan to circulate the air in the refrigerating chamber. According to this scheme, lowering the temperature in the freezer is happening simultaneously with the lowering of temperature in the refrigerating chamber, which leads to the violation of the optimal modes of storing food in the refrigerator. In order to achieve the required freezing capacity of the freezing chamber and to prevent the fall of the temperature in the refrigerating chamber below the 0oWith, the scheme involves the incorporation in the work teploelektronagrevatelya and fan, which increases energy consumption.

This diagram thermal regulation at different temperatures, in particular in home refrigerators, provides independent adjustment of the temperature in the refrigerating and freezing chambers and is extremely simple, efficient and reliable.

The scheme of regulation of the temperature regime at different temperatures, chilling the United evaporator, located in the freezer and the evaporator, located in the refrigerating chamber, the fan associated with the evaporator of the freezing chamber, a microprocessor or other electronic device control modes fridge freezer, and in the refrigeration and freezer set temperature sensors, characterized in that the electronic control unit, which receives the temperature data from refrigerators and freezers, by lowering the temperature in the freezer below the target or targets off the fan air circulation in the freezer, the temperature of the evaporator of the refrigerating chamber is reduced, enabling a reduction in the temperature in the refrigerating chamber to the established value.

The preferred embodiment of the invention applied to a domestic refrigerator is shown schematically in Fig.1.

In Fig. 1 whole fridge indicated by figure 1. It contains: freezing chamber 2 and the refrigerating chamber 3, a compressor 4, a condenser 5, a throttle, the diagram not labeled, connected in series evaporator 6, located in the freezer and the evaporator 7, located in the refrigerating chamber, ve is Alenia 9, the temperature sensor 10 to control the operation of the compressor and the fan, the sensitive element of which is located in the refrigerating chamber.

The above applies to well-known technical solutions.

In accordance with the invention to control the operation of only one fan is mounted temperature sensor 11, the sensor element which is located in the freezer, which at low temperature in the freezer below the target or targets off the fan air circulation in the freezer, the temperature of the evaporator of the refrigerating chamber is reduced, enabling a reduction in the temperature in the refrigerating chamber up until the temperature sensor 10 will not shut down the compressor. Possible variant of the refrigerator, when you shut off the compressor for a certain time turns on the fan air circulation in the freezer to use accumulated in the evaporator of the freezing chamber cold.

The variant of the scheme of regulation of the temperature regime at different temperatures, in which the temperature in the chambers is carried out by the controllers.

On recondensation 5, choke, the diagram not labeled, connected in series evaporator 6, located in the freezer and the evaporator 7, located in the refrigerating chamber, the fan 8 that is associated with the evaporator of the freezing chamber, the controller 9 to control the operation of the compressor, the sensitive element of which is located in the refrigerating chamber, to control the operation of only one fan is installed, thermostat 10, the sensing element which is located in the freezer, which at low temperature in the freezer below the target or targets off the fan air circulation in the freezer, characterized in that the circuit of the fan installed additional device 11, which after you turn off the compressor for a certain time turns on the fan air circulation in the freezer to use accumulated in the evaporator of the freezing chamber cold.

1. The scheme of regulation of the temperature regime at different temperatures in the refrigerator, which contains the freezing and refrigerating chambers, compressor, capacitor, inductor, connected in series evaporator, located in the freezer,at school and freezers, the microprocessor or other electronic device control modes of operation of the refrigerator, which receives temperature data from the refrigerating and freezing chambers, characterized in that the fan associated with the evaporator of the freezing chamber, and the electronic device when the temperature drops in the freezer below the target or targets off the fan air circulation in it, providing a lower temperature in the refrigerating chamber to shut off the compressor.

2. The scheme of regulation of the temperature regime at different temperatures in the refrigerator, made under item 1, characterized in that after switching off the compressor microprocessor or other electronic control device includes at a certain time fan air circulation in the freezer to use accumulated in the evaporator of the freezing chamber cold.

3. The scheme of regulation of the temperature regime at different temperatures in the refrigerator, which contains the freezing and refrigerating chambers, compressor, capacitor, inductor, connected in series evaporator, located in the freezer and the evaporator, located in the refrigerating chamber, the sensitive element of which is located in the refrigerating chamber, a thermostat to control the fan operation, the sensing element which is located in the freezer, which at low temperature in the freezer below the target or targets off the fan air circulation in the freezer, the fan circuit is set to the device after turning off the compressor for a certain time period includes the fan air circulation in the freezer to use accumulated in the evaporator of the freezing chamber cold.

 

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SUBSTANCE: refrigerator comprises thermally insulated chamber, cooling device with a cooler, additional cooling device with the additional cooler mounted inside the thermally insulated chamber for direct cooling of products, and temperature controller. The additional cooling device is provided with a working unit which comprises reference-input element, actuator, control device, and controlled pressure-tight passages which are used for circulating coolant cooled by ambient air and pass through the wall of the chamber. The passages are the inlet and outlet for the additional coolant and are directly in communication with the ambient air which circulates in the space of the additional cooler and is cut-off by means of the control device and actuator.

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