KR100657557B1 - Apparatus and method for controlling fixed temperature of refrigerator - Google Patents

Abstract

An apparatus and method of controlling a constant temperature of a refrigerator is provided to uniformly maintain a temperature in the refrigerator after completion of operation of a compressor. An apparatus for controlling a constant temperature of a refrigerator includes a first magnetic body(220), a motor drive part(210), a second drive part(240), and a paramagnetic body(230). The first magnetic body is installed in the refrigerator to generate a magnetic field. The motor drive part rotates the first magnetic body. The second drive part is installed opposite to the first magnetic body to form an attractive or repulsive magnetic field with the first magnetic body when the first magnetic body is rotated. The paramagnetic body is installed between the first and second magnetic bodies to absorb or emit ambient heat.

Description

Apparatus and method for controlling fixed temperature of refrigerator

1 is an exemplary view showing a conventional refrigerator refrigeration system.

Figure 2 is a block diagram showing a configuration of a constant temperature control device of a refrigerator according to the present invention.

3 is a state diagram showing an operating state in which the constant temperature control device of FIG. 2 generates a magnetic field of the attraction force;

4 is a state diagram showing an operating state in which the constant temperature control device of FIG. 2 generates a magnetic field of repulsive force.

Figure 5 is a flow chart showing a constant temperature control process of the refrigerator according to the present invention.

(Explanation of symbols for the main parts of the drawing)

100: refrigerator 110: refrigerator compartment cavity

200: constant temperature control unit 210: driving unit

220: first magnetic body 230: paramagnetic

240: second magnetic material

The present invention relates to a constant temperature control of a refrigerator, and more particularly to a constant temperature control system of a refrigerator which prevents the temperature of the cooled object in the refrigerator from rising at the end of the compressor operation of the refrigerator and reduces the thermal shock of the frozen animal by supercooling. It relates to a control method.

In general, the refrigerator includes a cold air circulation fan for discharging the cold air heat exchanged by the cooler into the freezer compartment and the refrigerating compartment, respectively, and drives the cold air circulation fan according to the temperature difference between the internal temperature of the refrigerator compartment and the freezer compartment and the set temperature. The temperature inside the refrigerator is controlled.

As shown in FIG. 1, the refrigerator according to the related art includes a compressor 20 compressing a refrigerant in a machine room formed under the refrigerator 10, and a refrigerant compressed at high temperature and high pressure in the compressor 20. An expansion valve 40 for condensing the condenser 30 condensing through the blower fan 60 and the refrigerant condensed in the condenser 30 to be a low temperature low pressure refrigerant, and the low temperature low pressure refrigerant evaporate from the evaporator 50. It is configured to flow into the inside of the air through the cold air circulation fan 51, respectively.

However, in the refrigerator according to the prior art, the air cooled through the above-described cooling cycle is discharged to the refrigerating chamber and the freezing chamber by the operation of the cold air circulation fan 51 to exchange heat with the air in the refrigerator, and the air heated by the heat exchange is air Through the circulation process flowing into the flow path duct (not shown).

At this time, the cold air of the refrigerating chamber is mainly supplied with a large amount of cold air to the center of the inside of the inside of the high temperature or relatively small amount of cold air is supplied to the corner, there is a problem that the cold air is not evenly distributed throughout the whole inside.

In addition, after the end of the cooling cycle of the refrigerator, the temperature in the refrigerator rises according to the temperature difference of the object to be cooled in the refrigerator, which causes a problem in that the temperature distribution in the refrigerator is not uniform.

In addition, there is a problem of increasing the power consumption of the refrigerator by increasing the number of driving of the cooling cycle to maintain a constant internal temperature.

SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide an apparatus and method for controlling the temperature of a refrigerator to maintain a constant temperature in a refrigerator after the driving of the refrigerator compressor is finished.

In order to achieve the above object, the present invention provides a device for controlling the internal temperature of the refrigerator to be maintained, the first magnetic material is installed in the refrigerator of the refrigerator to generate a magnetic field; A motor driver for rotating the first magnetic body; A second magnetic body disposed to face the first magnetic body and forming a magnetic field of attraction or repulsive force with the first magnetic body according to the rotation of the first magnetic body; And a paramagnetic body installed between the first magnetic body and the second magnetic body, and endothermic to generate heat or generate heat according to the magnetic field of the attraction force or repulsive force generated between the first and second magnetic fields.

In addition, the paramagnetic body that absorbs heat or emits heat to the surroundings absorbs heat when the first magnetic body and the second magnetic body are located at the same polarity to form repulsive force, and the first magnetic body and the second magnetic body mutually It is characterized in that the heat generated when the attraction is formed in the opposite polarity.

In addition, the heat generation of the paramagnetic material is characterized in that the cooling cycle of the refrigerator is driven.

In addition, the endothermic of the paramagnetic body is characterized in that the end of the cooling cycle of the refrigerator.

In addition, the constant temperature control method of the constant temperature control system of the refrigerator according to the present invention comprises the steps of: detecting the internal temperature of the refrigerator; Comparing the internal temperature detected from the refrigerator with a first reference value for determining compressor operation; As a result of comparing the internal temperature with the first reference value, if the detected internal temperature exceeds the first reference value for the compressor driving determination, the cooling cycle is driven, and the magnetic field of the attraction is generated between the first magnetic material and the second magnetic material. Doing; Redetecting the temperature in the chamber; Comparing the redetected internal temperature with a second reference value for determining compressor operation; And terminating driving of the cooling cycle and generating a magnetic field of the repulsive force between the first magnetic body and the second magnetic body when the detected internal temperature is less than or equal to the second reference value for determining the compressor driving. do.

The magnetic field of the repulsive force may be generated between the first magnetic body and the second magnetic body when the detected internal temperature is less than the first reference value for determining the compressor driving in the comparison result between the detected internal temperature and the first reference value. It is done.

In addition, when the detected internal temperature is greater than or equal to the second reference value for determining the compressor driving, the cooling cycle of the refrigerator is driven when the detected internal temperature is higher than the second reference value. And controlling to generate a magnetic field of the attraction force.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

First, repeated description of the same configuration as the prior art is omitted, and the same reference numerals are used for the same configuration as the prior art.

Figure 2 is a block diagram showing the configuration of a constant temperature control device of a refrigerator according to the present invention. As shown in FIG. 2, a compressor 20, a condenser 30, and an expansion valve 40 for driving a cooling cycle of the refrigerator, a condenser 30, and an expansion valve 40 are formed at a lower part of the machine room of the refrigerator 100. An evaporator 50 and a cold air circulation fan 51 for supplying cold air into the furnace are installed at the center.

The constant temperature control unit 200 is installed at an upper portion of the refrigerator cavity 110 to maintain a constant temperature in the refrigerator.

The constant temperature control unit 200 includes a motor driver 210, a first magnetic body 220 and a second magnetic body 240 generating a magnetic field, and a paramagnetic body 230 that absorbs or generates heat around the surrounding heat.

The motor driver 210 uses any one of a DC motor, an AC motor, or a step motor in a configuration such that the first magnetic body 220 is rotated at a predetermined angle, and is preferably a step motor.

The first magnetic body 220 is connected to the motor driving unit 210 is installed in the refrigerator cavity 110 and generates a magnetic field is preferably a permanent magnet. In addition, the position of the polarity of the first magnetic body 220 changes as the motor driver 210 rotates.

The second magnetic body 240 is a permanent magnet that is fixedly installed to face the first magnetic body 220 to generate a magnetic field.

In addition, the second magnetic body 240 forms a magnetic field of the attraction force or the first magnetic body 220 according to the polarity changed by the rotation of the first magnetic body 220 or a repulsive magnetic field.

The paramagnetic body 230 is installed between the first magnetic body 220 and the second magnetic body 240 to absorb or heat the heat in the chamber according to the magnetic field of the attraction force or repulsive force generated between the first and second magnetic fields Fever.

The paramagnetic body 230 forms a strong magnetic field in the paramagnetic body 230 at a low temperature, that is, a magnetic field of attraction between the first magnetic body 220 and the second magnetic body 240, and generates a magnetic field in a state in which heat entry and exit from the outside is stopped. If removed, the temperature of the paramagnetic body 230 is drastically lowered to obtain a low temperature.

In addition, the paramagnetic body 230 generally uses special paramagnetic salts containing Fe ions and rare earth ions (for example, Gd ₂ SO ₄ , chromium potassium alum, etc.), and the paramagnetic salts are wrapped in liquid air or liquid helium. Put it in a special thermos.

FIG. 3 is a state diagram illustrating an operating state in which the constant temperature control device of FIG. 2 generates a magnetic field of an attractive force, and FIG. 4 is a state diagram illustrating an operating state in which the constant temperature control device of FIG. 2 generates a magnetic field of repulsive force.

As shown in FIG. 3 and FIG. 4, between the first magnetic body 220 and the second magnetic body 240 installed to face the first magnetic body 220 connected through the motor driving unit 210 and the rotating shaft 211. When the magnetic field of the attraction force is generated, a magnetic field is formed in the paramagnetic body 230 to generate heat around.

When the first magnetic body 220 is rotated by the rotation of the motor driving unit 210 and the polarity thereof is changed, a magnetic field of repulsive force is formed between the first magnetic body 220 and the second magnetic body 240, and the paramagnetic body 230 is surrounded by The heat absorbs from the.

On the other hand, the heat generated from the paramagnetic body 230 is cooled by the cold air generated by the cooling cycle driving of the refrigerator, and when the driving of the cooling cycle is terminated through the endothermic of the paramagnetic body 230 to maintain a low temperature in the high temperature do.

In addition, by controlling the endotherm of the paramagnetic body 230 according to the strength of the magnetic field generated between the first magnetic body 220 and the second magnetic body 240, the temperature in the refrigerator can maintain a constant temperature.

Next, a method of controlling the constant temperature of the refrigerator according to the present invention will be described with reference to FIGS. 2 and 5. 5 is a flowchart illustrating a process of controlling the temperature of the refrigerator according to the present invention.

2 and 5, the constant temperature control unit 200 detects the internal temperature of the refrigerator (S100), and determines whether or not the operation of the compressor, that is, the cooling cycle of the internal temperature detected in step S100. Compared with the first reference value for (S110). The first reference value is a reference temperature for determining whether the cooling cycle is driven.

If the internal temperature detected in the step S100 is less than the first reference value for determining the compressor driving in the comparison result of step S110, or the magnetic field of the repulsive force is generated between the first magnetic body 220 and the second magnetic body 240. As a result, the temperature in the refrigerator can be maintained at a constant temperature.

In addition, when the internal temperature detected in the step S110 exceeds the first reference value for determining the compressor driving, the compressor 20 is driven to cool the refrigerator by a cooling cycle (S120), and the first magnetic body ( The constant temperature control unit 200 is turned on to generate a magnetic field of the attraction between the 220 and the second magnetic material 240 (S130).

At this time, some of the cold air generated in the step S120 serves to cool the heat generated from the paramagnetic body 230 of the step S130.

After performing step S130, the temperature in the refrigerator is redetected (S140), and the temperature detected in the refrigerator is redetected in step S140 with a second reference value for determining compressor operation (S150). The second reference value is a reference temperature for determining whether to end the cooling cycle.

As a result of the comparison in step S150, when the detected inside temperature is greater than or equal to the second reference value for determining the compressor driving, the cooling cycle of the refrigerator is driven, and a magnetic field of the attraction is generated between the first magnetic body and the second magnetic body. To perform the step S120 again.

In addition, as a result of the comparison in step S150, when the internal temperature detected in the step S140 is less than or equal to the second reference value for determining the compressor driving, the driving of the cooling cycle is terminated (S160), and the first magnetic body 220 and the second magnetic body. The constant temperature control unit 200 is turned off (OFF) so as to generate a magnetic field of repulsive force between the 240 (170).

Therefore, the paramagnetic body 230 can maintain a low temperature through the endotherm and the temperature in the high temperature can be maintained at a constant temperature.

In addition, by controlling the rotation angle of the first magnetic body 220 by controlling the intensity of the magnetic field formed between the first magnetic body 220 and the second magnetic body 240 to control the temperature in the chamber according to the heat absorption of the paramagnetic body 230 can do.

As described above, the present invention has the advantage of maintaining a constant temperature by reducing the temperature deviation in the refrigerator generated by the cooling cycle of the refrigerator ON / OFF operation.

In addition, there is an advantage that the temperature distribution in the refrigerator can be uniformly distributed by preventing the temperature of the object to be cooled in the refrigerator from being excessively raised or cooled during the stop and operation of the cooling cycle during operation of the refrigerator.

In addition, there is an advantage of reducing the power consumption of the refrigerator by reducing the number of driving cycles of the cooling cycle using a high power consumption compressor to maintain a constant high temperature inside.

In the above, the present invention has been illustrated and described with respect to certain preferred embodiments. However, the present invention is not limited to the above-described embodiments, and those skilled in the art to which the present invention pertains can vary as many as possible without departing from the spirit of the present invention as set forth in the claims below. Changes may be made.

Claims (7)

A device for controlling the temperature inside the refrigerator to be kept constant, A first magnetic body installed in the refrigerator and generating a magnetic field; A motor driver for rotating the first magnetic body; A second magnetic body disposed to face the first magnetic body and forming a magnetic field of attraction or repulsive force with the first magnetic body according to the rotation of the first magnetic body; And And a paramagnetic material installed between the first magnetic material and the second magnetic material, the paramagnetic material absorbing or generating heat from surroundings according to the attraction force or repulsive magnetic field generated between the first and second magnetic fields. The method of claim 1, wherein the paramagnetic material absorbs heat when the first magnetic material and the second magnetic material are located at the same polarity to form a repulsive force, and the first magnetic material and the second magnetic material are located at opposite polarities to form an attractive force. If the constant temperature control device of the refrigerator, characterized in that to generate heat. 3. The apparatus of claim 2, wherein the heat generation of the paramagnetic is performed at the time of driving the cooling cycle of the refrigerator. The constant temperature control device of the refrigerator according to claim 2, wherein the endothermic of the paramagnetic material is formed at the end of driving of the cooling cycle of the refrigerator. As a constant temperature control method of the constant temperature control apparatus of the refrigerator using any one of Claims 1-4, a) detecting the internal temperature of the refrigerator; b) comparing the internal temperature detected in step a with a first reference value for determining compressor operation; c) driving a cooling cycle when the detected internal temperature exceeds the first reference value for determining the compressor driving, and controlling a magnetic field of attraction between the first magnetic body and the second magnetic body in the comparison result of step b; ; d) rediscovering the temperature in the furnace; e) comparing the internal temperature detected in step d with a second reference value for determining compressor operation; And f) when the detected internal temperature is less than or equal to the second reference value for the compressor driving determination in the comparison result of step e, controlling driving so that a repulsive magnetic field is generated between the first magnetic body and the second magnetic body. Method for controlling the constant temperature of the refrigerator comprising the step. The refrigerator according to claim 5, wherein a repulsive magnetic field is generated between the first magnetic material and the second magnetic material when the detected temperature inside the refrigerator is less than the first reference value for determining the compressor driving. Temperature control method. The method of claim 5, wherein when the detected internal temperature is greater than or equal to the second reference value for the compressor driving determination in the comparison result of step e, a cooling cycle of the refrigerator is driven, and a magnetic field of an attraction force is generated between the first magnetic body and the second magnetic body. Method for controlling the constant temperature of the refrigerator, characterized in that to perform the step of controlling to.

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