KR20000034720A - Complex type refrigerator - Google Patents

Abstract

PURPOSE: A complex typed refrigerator is provided to improve cooling speed and to maintain a constant temperature by compounding a fan-cooling refrigerator and a direct-cooling refrigerator. CONSTITUTION: A temperature sensor of a refrigerating cavity detects the temperature of the refrigerating cavity for feeding to a microcomputer. Then, the temperature is decided if over an established temperature to operate the refrigerating cavity. A compressor is operated in case of the temperature of the refrigerating cavity over the established temperature to operate the refrigerating cavity. If the temperature of the refrigerating cavity is under an established driving off temperature of the refrigerating cavity, the compressor and an F-fan are turned off. Then, the temperature sensor of a freezing cavity detects the temperature of the freezing cavity for feeding to the microcomputer. If the detected temperature of the freezing cavity is over an established driving temperature of the freezing cavity, the F-fan is driven.

Description

Hybrid refrigerator.

The present invention relates to a complex refrigerator, in particular, the freezer compartment adopts a forced forced circulation of cold air by the fan, the cold compartment adopts a natural convection method by the natural convection and the conduction of the surface of the cooler to improve the cooling rate and maintain a constant temperature The present invention relates to a composite refrigerator that can be effectively performed.

In general, when a refrigerator cools a liquid refrigerant into a cooling tube and releases it into the air, the refrigerator takes away heat required for evaporation, and the refrigerant itself becomes a gas to cool the surroundings and perform cooling. The refrigeration cycle of the refrigerator includes a compressor for compressing and outputting a gaseous refrigerant, a condenser for cooling the refrigerant gas of high temperature and high pressure by air or the like, and a high pressure liquid state output from the condenser. Capillary tube for reducing the pressure and output the refrigerant, and the low-pressure liquid refrigerant flowing from the capillary tube is evaporator (Evaporator) to perform a cooling action by taking evaporation latent heat from the surroundings.

At this time, it is mainly applied to the small and small refrigerators, the evaporator is installed in each of the refrigerating chamber and the freezer compartment, the refrigerating chamber is installed by the evaporator in the upper part and cooled by natural convection, the freezer compartment surrounds the evaporator and the method of cooling by heat conduction and convection It is a natural charge direct-cooling refrigerator.

In addition, it is mainly applied to a large refrigerator, a method of installing an evaporator other than the refrigerating compartment and the freezing compartment to circulate cold air through a fan to cool the refrigerating compartment and the freezing compartment is a forced convection type refrigerator (Fan-Cooling).

Among these refrigerators, particularly, the fan-cooling refrigerator includes a fan for discharging cold air to discharge cold air around the evaporator to the freezer compartment and the refrigerating compartment to cool the inside of the refrigerator, and to control the operation of the fan and the compressor. Temperature control.

In the inter-cooling refrigerator, two fans (R fan and F fan) for discharging cold air to the freezer compartment and the refrigerating compartment are independently driven and controlled, and the compressor is controlled to discharge the cold air around the evaporator to the freezer compartment and the refrigerating compartment. Is maintained at the proper temperature.

By the way, the above-mentioned direct-cooling refrigerator has the advantage that the preservation period of the food is long due to the small temperature change in the high temperature because the cooling is a method of conduction of the natural convection and the surface of the cooler, but has a disadvantage that the cooling rate and the ice making rate is slow.

In addition, the above-described intercooled refrigerator has an advantage that the cooling speed is high because the cooling is forced forced circulation by the fan, but the food storage period is shortened due to the freezing of food around the cold air outlet of the refrigerating chamber or a wide range of temperature changes during operation.

In particular, there is a drawback of not storing the kimchi and vegetables for a long time due to severe food drying phenomenon in the refrigerator compartment.

It is an object of the present invention to provide a combined refrigerator that can perform a function of improving the cooling rate and maintaining a constant temperature by combining an intercooled refrigerator and a direct cooled refrigerator.

1 is a schematic block diagram of a hybrid refrigerator according to the present invention;

Figure 2 is a side sectional view showing a composite refrigerator according to the present invention,

3 is a flowchart illustrating the present invention.

<Explanation of symbols for main parts of the drawings>

10: freezer compartment temperature sensor 20: refrigerator compartment temperature sensor

30: microcomputer 40: F fan drive unit

50: F fan 60: compressor drive unit

70: compressor 80: freezer evaporator

90: refrigerator compartment evaporator 100: cold

A: Freezer B: Refrigerator

The present invention provides a combined refrigerator comprising: a freezer compartment configured to discharge cold air around a freezer compartment evaporator to a freezer compartment by driving a fan and a compressor; A refrigerating compartment installed in the upper part of the refrigerating compartment and cooled by natural convection; and provided between the freezer compartment evaporator and the refrigerating compartment evaporator, a chiller for circulating a refrigerant of the evaporator.

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

1 and 2, the refrigerator of the present invention may include a freezer compartment temperature sensor 10, a refrigerator compartment temperature sensor 20, a microcomputer 30, an F fan driving unit 40, an F fan 50, and a compressor driving unit. 60, a compressor 70, a freezer compartment evaporator 80, a refrigerator compartment evaporator 90, a cold furnace 100, a freezer compartment A, and a refrigerator compartment B.

In such a configuration, the freezer compartment temperature sensor 10 is installed at a predetermined position in the freezer compartment, and the A / D of the microcomputer 30 described later by the F-sensor (typically the voltage value of the DC level) described later ( Analog to Digital) port.

The refrigerating compartment temperature sensor 20 is installed at a predetermined position in the refrigerating compartment, and the A / D (Analog to Digital) port of the microcomputer 30 which describes the internal temperature detected by the R-sensor (usually a DC level voltage value) will be described later. Is applied.

The microcomputer 30 compares / determines the preset temperature according to the freezer compartment temperature A and the refrigerator compartment B temperature detected by the freezer compartment temperature sensor 10 and the refrigerator compartment temperature sensor 20, and accordingly, the compressors 70 and F The drive signal of the fan 50 is output.

Therefore, the microcomputer 30 independently drives and controls the F fan 50 and the compressor 70 to be described later based on the appropriate temperature of the detected refrigerator, which is applied to each A / D port and digitally converted, and the defrosting condition is performed. In this case, the defrost heater (not shown) is driven to remove frost attached to the evaporator.

The F fan driver 40 outputs a predetermined drive signal to the F fan 50 under the control of the microcomputer 30 using a drive element, a relay, and the like, and the F fan 50 is a fan for a freezer compartment. And driven based on a drive signal from the F fan driver 40 to discharge cold air around the freezer compartment evaporator 80 to the freezer compartment.

The compressor driver 60 outputs a predetermined drive signal to the compressor 70 under the control of the microcomputer 30 by using a drive element, a relay, and the like, and the compressor 70 is provided from the evaporator in the aforementioned refrigeration cycle. The refrigerant gas of low temperature and low pressure is converted into a refrigerant gas of high temperature and high pressure and output to the condenser.

The refrigerating chamber evaporator (Roll-Bond Evaporator) 90 is a refrigerant circulated by the cold air 100 connected to the freezer compartment evaporator 80, the cold air is circulated by the natural convection method.

Next, a detailed description will be given with reference to a flowchart of FIG. 3 attached to a control process of a hybrid refrigerator in a refrigerator according to a preferred embodiment of the present invention including the above-described configuration unit.

First, the refrigerator temperature sensor detects the temperature of the refrigerator compartment and applies it to the microcomputer (step 200).

Next, it is determined whether the detected refrigerator compartment temperature is equal to or greater than the predetermined refrigerator compartment driving temperature.

On the other hand, the compressor is operated by the refrigerator compartment temperature sensor, the compressor is driven when the refrigerator compartment temperature is more than the predetermined refrigerator compartment driving temperature.

Subsequently, it is determined whether the refrigerating compartment temperature is equal to or less than the predetermined refrigerating compartment driving off temperature (step 500), and when the refrigerating compartment driving off temperature is below the refrigerating compartment driving off temperature, the compressor and the F fan are driven off (step 600).

On the other hand, the freezer compartment temperature sensor detects the temperature of the freezer compartment and applies it to the microcomputer (step 700).

Next, it is determined whether the detected freezer compartment temperature is equal to or higher than the preset freezer compartment driving temperature (step 800).

As described above, according to the present invention, the freezer compartment adopts the forced forced circulation of the cold air by the fan, and the refrigerating compartment has the following effects by adopting the natural convection method by the natural convection and the conduction of the cooler surface.

First, by providing two evaporators, by reducing the amount of frost generated in the freezer compartment cooler, it is possible to extend the defrosting cycle and reduce the actual power consumption.

Second, the freezing compartment adopts a forced convection method by the fan to concentrate the air flow rate into the freezing compartment, thereby increasing the cooling speed.

Third, the refrigerating chamber is driven according to the natural convection method, the temperature change in the refrigerator is small, there is an effect that can extend the storage period of food.

Claims (1)

A freezer compartment for discharging cold air around the freezer compartment evaporator to the freezer compartment by driving a fan and a compressor; A refrigerating compartment that cools by natural convection by installing a refrigerating compartment evaporator in the upper part of the refrigerating compartment, The refrigerator provided between the freezer compartment evaporator and the refrigerating compartment evaporator is provided with a cold air for circulating the refrigerant of the evaporator.