KR100344794B1 - the separational cooling system for a refrigerator - Google Patents

Abstract

The present invention is to ensure that the heat in the refrigerator compartment and the freezer compartment is completely separated so that the refrigerator compartment moisture is not implanted in the evaporator and the freshness of the refrigerated food is doubled.

To this end, the present invention is a refrigerator, an insulation member provided between the freezer compartment and the refrigerating compartment to block the cold air of the freezer compartment and the cold compartment of the freezer compartment, one end penetrated through the heat insulating member is exposed to the freezer compartment cold air and the other end to the refrigerator compartment cold air It is provided with a thermosiphon to be exposed to provide a separate cooling device for a refrigerator in which heat is transferred from cold air in a refrigerating chamber in a high temperature state to cold in a freezing chamber in a low temperature state.

Description

Separation cooling system for a refrigerator

The present invention relates to a refrigerator, and more particularly to a separate cooling device for a refrigerator.

In general, as shown in Figure 1, the refrigerator for storing or refrigerating food is low temperature by repeating the refrigeration cycle of compression-condensation-expansion-evaporation of the refrigerant to keep the food fresh for a long time As a refrigeration and refrigeration equipment, generalized home appliances that are essentially used in restaurants and homes.

Referring to the basic configuration of the refrigerator as described above as follows.

However, components included in the description process will be omitted since it is a general known technology.

The refrigerator includes a compressor that warms up and boosts a gas refrigerant in a low temperature and a low pressure state at a high temperature and a high pressure state, and a condenser that cools and condenses a refrigerant in a high temperature and high pressure gas state flowing from the compressor into a liquid refrigerant having a temperature of 40 ° C. and a pressure of 9 atm. And a capillary tube for depressurizing the liquid refrigerant introduced through the condensation in comparison with the refrigerant diameter of the other part at a low temperature and a low pressure, and by evaporating the low temperature and low pressure liquid refrigerant from a low pressure state to a low temperature (minus 30 ° C.). It consists of an evaporator which heats the air in a relatively high temperature room and heats it.

As shown in FIG. 1, the structure of a conventional refrigerator, which is essentially provided with the above apparatuses, includes an outer case 1, which is an insulating material forming the outer shape of the refrigerator, and an upper case or an inner case of the outer case. The cold air heat-exchanged by the heat exchanger is directly introduced into the freezer compartment 2 to maintain an indoor temperature of about −18 ° C., and a high temperature (3 ° C.) compared to the freezer compartment 2 by natural heat exchange in the process of supplying cold air from the freezer compartment. And a refrigerating chamber (3) maintaining the room temperature of the door), and doors (2a) and (3a) provided to open and close the chambers in front of the freezing chamber (2) and the refrigerating chamber (3).

Therefore, the high temperature cold air in the refrigerating compartment heat-exchanged by the food stored in the refrigerating compartment 3 at high temperature is caused by the suction force and natural convection caused by the rotation of the freezing compartment fan 4 installed at the rear of the freezing compartment 2. 2) is forced into the evaporator (or cooler) 6 side through the inside of the barrier 5 partitioning the refrigerator compartment 3, and the high temperature cold air is evaporated by the subsequent rotational force of the freezer compartment fan 4. Heat is exchanged with cold cold while passing through.

The cold heat exchanged in this manner is partially blown into the freezing compartment 2 by the freezer compartment 4, and the remaining cold air is forcedly blown into the refrigerating compartment 3 through a duct (not shown) formed at the rear of the refrigerating compartment 3. The freezing chamber 2 and the refrigerating chamber 3 are lowered in temperature.

As described above, the cycle for lowering the temperature inside the refrigerator continues until the temperature reaches the set temperature, and when the temperature reaches the set temperature, the refrigerator temporarily stops operation (or, precisely, the compressor is "off" to produce cold air). Stopping) will prevent overcooling and wasted power as the temperature falls below the set temperature.

After that, when the temperature rises above the set temperature, the refrigeration cycle is resumed.

On the other hand, the conventional cold air flow is heat exchanged to a low temperature while the cold air in the freezer compartment 2 and the refrigerating compartment 3 passes through the evaporator 6 as shown in the arrow direction shown in Figure 1, the cold air exchanged in the duct (not shown) It is distributed to the freezing compartment (2) and the refrigerating compartment (3), respectively, and the cold air supplied to each compartment is repeated to flow through the barrier (5) toward the evaporator (6) when the heat exchanged to a high temperature by the stored food. .

In this case, since the cool air in the refrigerating compartment 2 is relatively wet compared to the freezer air, the frost layer is formed as moisture contained in the cold air is adsorbed onto the surface of the low temperature evaporator through the evaporator 6 and freezes. If the frost layer is not removed, the heat exchange capacity is lowered, so the existing refrigerator has a defrost function for removing the frost layer.

The defrost function is a task of melting the frost layer by generating a heater (not shown) installed in the evaporator 6 at regular intervals based on the operation time of the compressor.

Therefore, the power consumption increases as the heater heats up, and the heat supply for the defrosting needs to be removed again by the refrigeration cycle, which causes a problem of double heat loss.

In addition, since the cold air of the refrigerating compartment is converted into low humidity cold in the process of heat exchange at a low temperature while passing through the evaporator (6), the cold air is introduced into the refrigerating compartment (3), thereby reducing the freshness of foods stored in the refrigerating compartment (3). There is also a problem of shortening the shelf life of food.

And the smell of kimchi spread in the refrigerating chamber and all kinds of food smells are introduced into the freezer through the duct again has a problem that the smell is doubled in the food stored in the freezer.

And since the freezer compartment cold air is injected directly through the duct has a problem that the upper portion of the refrigerating compartment that can directly receive the cold air takes a lower temperature than the lower portion of the refrigerating compartment.

The present invention has been made to solve the problems of the prior art, so that the refrigerator compartment moisture is not implanted in the evaporator, the air in the refrigerator compartment and the freezer compartment is completely separated so that heat exchange is made so that the freshness of the refrigerated food is doubled. There is a purpose.

1 is a block diagram showing a configuration of a refrigerator according to the prior art.

2 is a block diagram showing a configuration of a refrigerator according to the present invention.

Figure 3a is a detail view of the "A" part showing the main portion of Figure 2 according to the present invention.

3B is a sectional view taken along line I-I of 3a, illustrating a state in which cold air flows into the first freezing cold air passage part, the second freezing cold flow path part, and the refrigerated cold air flow path part of the insulation member in the separate cooling device for a refrigerator according to the present invention;

Figure 3c is a cross-sectional view II-II of Figure 3a showing the flow of cold air in the first freezing cold air flow unit in the separate cooling device for a refrigerator according to the present invention.

3D is a cross-sectional view taken along line III-III of FIG. 3A showing the flow of cold air in a refrigerated cold air flow path in the separate cooling device for a refrigerator according to the present invention.

3E is a cross-sectional view taken along line IV-IV of FIG. 3A showing the flow of cold air in the second freezing cold air flow path in the separate cooling device for a refrigerator according to the present invention;

Figure 4 is a perspective view showing the configuration of the thermosiphon in the separate cooling device for a refrigerator according to the present invention.

Figure 5 is a cross-sectional view of the I-I showing that the refrigerant of the thermosiphon in the liquid state in the separate cooling device for a refrigerator according to the present invention.

Figure 6 is a cross-sectional view I-1 I showing that the refrigerant of the thermosiphon in the gas separation state in the refrigerator for a separate cooling device according to the present invention.

Explanation of symbols for main parts of the drawings

2: freezer 3: cold storage room

10: evaporator chamber 20: duct

25: fan 110: refrigeration cold air flow path

111: suction port 112: guide flow path

113: outlet 120: refrigerated cold air flow path

121: suction port 122: guide flow path

123: outlet 200: summer cyphon

In order to achieve the above object, the present invention relates to a refrigerator,

Insulation member installed between the freezer compartment and the refrigerating compartment to block the cold air of the freezer compartment and the cold compartment, and one end penetrated through the heat insulating member is exposed to the freezer cold air, and the other end is provided with a thermosiphon to expose the cold air to the cold compartment. Provided is a separate cooling device for a refrigerator in which heat is transferred from cold air in a refrigerating compartment to cold in a freezing compartment in a low temperature state.

Referring to the drawings to describe the above content in more detail as follows.

Figure 2 is a block diagram showing the configuration of the refrigerator according to the present invention, Figure 3a is a detailed view of the "A" part showing the main portion of Figure 2 according to the present invention, Figure 3b is a separate cooling device for a refrigerator according to the present invention 3A is a cross-sectional view of I-I of FIG.

3C is a sectional view taken along line II-II of FIG. 3A showing the flow of cold air from the first freezing cold air flow unit in the separate cooling device for a refrigerator according to the present invention, and FIG. 3D is the cold air flow passage of the cold storage channel in the separate cooling device for refrigerators according to the present invention. 3A is a cross-sectional view taken along line III-III of FIG. 3A, and FIG. 3E is a cross-sectional view taken along line IV-IV of FIG. 3A showing the flow of cold air in the second freezing cold air flow path in the separate cooling device for a refrigerator according to the present invention.

And Figure 4 is a perspective view showing the configuration of the thermosiphon in the separate cooling device for a refrigerator according to the present invention, Figure 5 is a Ⅰ-Ⅰ showing that the refrigerant of the thermosiphon in the separate cooling device for a refrigerator according to the present invention in a liquid state Section view. 6 is a cross-sectional view of the I-I showing that the refrigerant of the thermosiphon is in a gas state in the separate cooling device for a refrigerator according to the present invention.

As shown in FIG. 2, the configuration will be described in more detail as follows.

Insulating member 100 provided between the freezing chamber 2 and the refrigerating chamber 3 so that the cold air of the freezing chamber 2 and the cold air of the refrigerating chamber 3 are blocked, and one end of the freezing chamber 2 penetrates the insulating member 100. The thermosiphon 200 is provided to expose the cold air and the other end of the refrigerator to the cold air.

The separate cooling device for a refrigerator made as described above is operated as follows.

The thermosiphon 200 receives heat from the cold air in the refrigerating chamber 3 at a high temperature and transfers the heat to the cold in the freezing chamber 2 at a low temperature to operate at a temperature of the refrigerating chamber at 3 ° C. The content is as mentioned later.

As shown in Figure 2 and 3a, one embodiment of the insulating member 100 is composed of the following components.

The first freezing cold air flow path 110a through which cold air flows in the freezing compartment 2, the cold freezing air flow path 120 through which the cold air flows in the freezer compartment 3, and the second freezing cold air flow path through which the cold air flows through the freezing compartment 2. 110b is formed in the heat insulating member 100 in a lattice.

In addition, the first freezing cold air flow path 110a includes a suction port 111a through which cold air in the freezing chamber 2 flows into the first freezing cold air flow path by the rotational force of the fan 4, and a flow direction of the sucked cold air. Guide flow path (112a) for guiding, and the discharge port 113a is discharged to the evaporator chamber 10 provided in the freezing chamber (2) side of the cold air of the guide flow path is formed.

In addition, the second freezing cold air passage 110b also has the same configuration as the first freezing cold air passage 110a.

In addition, the refrigerating and cooling air flow path unit 120 is connected to the suction port 121 into which the cold air in the refrigerating chamber 3 flows into the refrigerating and cooling air flow path unit 120 by the rotational force of the fan 25 and the flow direction of the sucked cold air. The guide passage 122 for guiding and the discharge port 123 for discharging the cold air of the guide passage back to the duct 20 provided in the refrigerating chamber 3 side are formed.

The role of the insulating member 100 made as described above is as follows.

First, the heat insulating member 100 includes an upper portion of the freezing compartment 2 and the evaporator chamber 10 and the refrigerating compartment 3 and the duct 20 so that the cold air of the freezing compartment 2 and the cold air of the refrigerating compartment 3 are not mixed with each other. It completely separates the lower part consisting of).

Second, the heat insulating member 100 serves to help the cold air circulate in a heat-insulating state through the freezing cold air flow path part 110 and the refrigerated cold air flow path part 120.

Third, the insulating member 100 serves to support the load of the freezer compartment 2 and the load of food stored in the freezer compartment 2.

On the other hand, as shown in Figure 4, the known technology summer siphon 200 is composed of the following components.

The upper plate 210 and the lower plate 220 having a wave shape are bonded to each other to form a plurality of conduits 230, and the refrigerant 300 is inserted into the conduits 230.

The thermosiphon 200 made as described above functions as follows.

In order for the thermosiphon 200 to function properly, as shown in FIGS. 5 and 6, one end of the thermosiphon 200 is always higher than the other end of the thermosiphon 200. Should be on.

The reason for this is to induce a siphon effect. When the refrigerant 300 of the thermosiphon is liquefied due to thermal imbalance such as evaporation and temperature difference, the thermosiphon 200 is located at a relatively low position by gravity. The coolant 300 is collected at the end of the coolant, and when the coolant 300 of the thermosiphon is vaporized, a series of coolant 300 is collected at the end of the thermosiphon 200 at a relatively high position by convection. The cycle of is repeated.

Meanwhile, referring to FIG. 3A to FIG. 3E, a coupling state between the heat insulating member 100 and the thermosiphon 200 will be described below.

As shown in Figure 3a, the thermosiphon 200 is inserted into the heat insulating member 100, the end of the thermosiphon 200 in a relatively high position in the freezing cold air flow path 110 Located, the end of the summer siphon 200 in a relatively low position is located in the refrigerated cold air flow path 120, the portion except the both ends of the summer siphon 200 is insulated insulated member 100 Built in).

And when explaining the interaction of the thermal insulation member 100 and the thermosiphon 200 coupled as described above are as follows.

As shown in FIGS. 3B and 3D, the cold air in the refrigerating chamber 3 having a relatively high temperature flows into the suction port 121 formed in the refrigerating and cooling air flow path part 120, and the thermosiphon (located in the guide flow path 122). Heat transfer).

Thereafter, as shown in FIG. 6, the liquid refrigerant 300 of the thermosiphon is vaporized and raised by heat, and as shown in FIGS. 3C and 3E, the refrigerant 300 in the gas state is a refrigeration cold air. The end of the thermosiphon 200 exposed to the flow path 110 moves.

3C and 3E, the cold air of the freezing chamber 2 in the relatively low temperature state flows into the suction port 111 formed in the freezing cold air flow path unit 110, and the summer located in the guide flow path 112. Heat is received from the phone 200.

Thereafter, as shown in FIG. 5, the gas refrigerant 300 of the thermosiphon loses heat and liquefies, and the liquefied refrigerant 300 descends by gravity, and as shown in FIG. 3D, the liquid The refrigerant 300 in the state moves back to the end of the thermosiphon 200 exposed to the refrigerated cold air flow passage part 120 again.

This action is performed repeatedly in a series of cycles.

Meanwhile, as shown in FIG. 2, it may be preferable to further install a fan on the duct 20 on the side of the refrigerating compartment 3 to force convection of the cold air of the refrigerating compartment 3 in order to achieve good heat transfer. .

As described above, since the present invention is separated and cooled by blocking the refrigerator compartment and the freezer compartment, the moisture of the refrigerating compartment is preserved, and the freshness of the food stored in the refrigerating compartment is doubled, and the shelf life of the food is doubled.

Since the refrigerating chamber moisture is blocked from moving to the freezing chamber, no respiration by the refrigerating chamber moisture is generated, and only the defrosting cycle is increased because it is implanted only by the moisture of the external air introduced during opening and closing of the freezer door.

That is, the power consumption of heating the heater is reduced, as well as it is possible to minimize the heat loss required to remove the amount of heat supplied for the defrost again by the refrigeration cycle.

And conventionally solved the problem that the heat exchange performance is reduced due to the frost layer generated in the evaporator by the gap between the tube and the tube of the bent evaporator, the frost layer is generated in the evaporator only by the moisture of the outside air It is possible to significantly reduce the tube and the tube of the bent evaporator.

That is, as the length of the tube is reduced, the amount of refrigerant passing through the tube can be significantly reduced.

In the related art, a separate cooling flow path is installed between the freezing compartment and the evaporator chamber to directly introduce the cold air of the evaporator chamber into the refrigerating chamber, and the present invention blocks and separates the freezing compartment and the refrigerating chamber to form a separate cooling flow path. This eliminates the need for a simplified structure.

In addition, since a separate forced convection fan is installed in the refrigerating chamber, rapid heat exchange can be achieved since the cold air is continuously sent to the heat exchanger.

In addition, the temperature of the entire refrigerating compartment may be kept constant by the rotation of the forced convection fan.

Claims (3)

A heat insulation member installed closely between the freezer compartment and the refrigerating compartment to separate the cold air of the freezer compartment and the cold compartment of the freezer compartment and to maintain a temperature difference between the freezer compartment and the refrigerating compartment; One end of the freezing chamber cold and the refrigerating compartment cold air separated by the heat insulating member penetrates the heat insulating member so that one end is exposed to the freezing compartment cold air and the other end is exposed to the refrigerating compartment cold air. Separation cooling apparatus for a refrigerator, characterized in that heat is transferred from the cold air of the refrigerating chamber in the high temperature state to the cold of the freezing chamber in the low temperature state. The method of claim 1, Insulation member At least one refrigeration cold air flow path unit including a suction port through which cold air is introduced, a guide flow path guiding a flow direction of the sucked cold air, and a discharge port for exiting from the guide flow path to a duct provided on the refrigerating chamber side; At least one freezing cold air flow passage formed with a suction port through which a freezer cold air flows, a guide flow path for guiding the flow direction of the sucked cold air, and an outlet for exiting from the guide flow path to an evaporator chamber provided at the freezing compartment side again. Separation cooling device for refrigerator. The method of claim 1, Separation cooling apparatus for a refrigerator, characterized in that the fan is further provided in the refrigerating compartment to force convection of the cold air of the refrigerating compartment in order to achieve good heat transfer.