KR102025738B1 - Refrigerator and heat exchanger for the same - Google Patents

Abstract

In a refrigerator having a freezer compartment and a refrigerating compartment, a refrigerator is provided which independently cools the freezer compartment and the refrigerating compartment by circulating two independent refrigeration cycles with two compressors. The refrigerator comprises two compressors, two condensers, two expansion valves and two evaporators, one of the two condensers is arranged inside the machine room and the other condenser is placed outside the machine room This can improve the heat dissipation effect of the machine room and increase the ease of placement. In addition, the refrigerator may include two compressors, one dual pass condenser, two expansion valves, and two evaporators, and the dual pass condenser may have two condensation passes independent of each other.

Description

Refrigerator and heat exchanger provided therefor {REFRIGERATOR AND HEAT EXCHANGER FOR THE SAME}

The present invention relates to a refrigerator having two compressors and to independently cooling the freezing compartment and the refrigerating compartment, and a refrigerating apparatus provided therefor.

2. Description of the Related Art Generally, a refrigerator is a home appliance that has a storage compartment for storing food and a refrigeration apparatus for supplying cold air to the storage compartment through a freezing cycle to keep the food fresh. The storage compartment is divided into a refrigerator compartment for storing food and a freezer compartment for freezing food.

The refrigerating device includes a compressor for compressing the gaseous refrigerant at a high temperature and high pressure, a condenser for condensing the compressed refrigerant into the liquid phase, an expansion valve for expanding the condensed refrigerant, and an evaporator for evaporating the liquid refrigerant to generate cold air.
In this regard, Korean Patent Laid-Open Publication No. 10-2011-0080104 relates to an 'ice-making chamber to which a direct-cooling ice maker is applied.' A cooling system is also introduced.

Conventional refrigerators circulate one refrigeration cycle with one compressor to cool the refrigerator compartment and the freezer compartment having different temperature ranges. As a result, the evaporator of the refrigerating compartment is supercooled, and waste of power is generated.

One aspect of the present invention discloses a refrigerator having a refrigeration device having two compressors and circulating two refrigeration cycles.

One aspect of the present invention discloses a machine room heat dissipation structure capable of effectively dissipating heat generated in two refrigeration cycles in a refrigerator having two compressors and a refrigerating device for circulating two refrigeration cycles.

One aspect of the present invention discloses a machine room arrangement structure in which a refrigerator having two compressors and a refrigerating device for circulating two refrigeration cycles improves heat dissipation effect within a limited machine room volume.

One aspect of the invention discloses a structure of a dual pass condenser capable of effectively dissipating heat generated in two refrigeration cycles.

According to an aspect of the present invention, a refrigerator includes: a main body; a first storage chamber formed inside the main body; a second storage chamber formed to insulate the first storage chamber inside the main body; and a first refrigerant. A first refrigeration apparatus including a first compressor to swell, a first expansion valve to expand the first refrigerant, and a first evaporator to evaporate the first refrigerant, and supplying cold air to the first storage chamber; A second refrigeration apparatus including a second compressor for compressing a second refrigerant, a second expansion valve for expanding the second refrigerant, and a second evaporator for evaporating the second refrigerant, and supplying cold air to the second storage chamber ; And a body having a body portion and a plurality of channels formed inside the body portion, wherein some of the plurality of channels form a first condensation path for condensing the first refrigerant, the other of the plurality of channels. Some channels form a second condensation path independent of the first condensation path and condensing the second refrigerant, the heat of refrigerant passing through the condensation path of any one of the first and second condensation paths; It includes; a dual pass condenser having a tube that is conducted to the heat radiated throughout the body portion, and the heat dissipation fin provided to contact the body portion of the tube.

Here, the tube may be integrally formed.

The dual pass condenser may include a first inlet through which the first refrigerant flows in, a first outlet through which the first refrigerant flows through the first condensation pass, and is discharged, and a second inflow passage through which the second refrigerant flows in. The second inlet may further include a second outlet flowing out after the second refrigerant condenses through the second condensation path.

The dual pass condenser may further include at least one header in which the first inlet, the first outlet, the second inlet, and the second outlet are formed.

In addition, the heat dissipation fin may have a width corresponding to the width of the tube and may be integrally formed.

The refrigerator may further include a machine room formed inside the main body, wherein the first compressor, the second compressor, and the dual pass condenser may be disposed in the machine room.

The apparatus may further include a blowing fan disposed inside the machine room to cool the first compressor, the second compressor, and the dual pass condenser.

Here, the first compressor is disposed on one side of the inside of the machine room, the second compressor is disposed on the other side of the inside of the machine room, and the dual pass condenser is disposed between the first compressor and the second compressor. And the blowing fan may be disposed.

Here, the blower fan may forcibly flow air from one compressor side to the other compressor side with a smaller heat generation amount among the first compressor and the second compressor.

According to another aspect of the present invention, a refrigerator includes a main body; a first storage chamber formed inside the main body; a second storage chamber insulated from the first storage chamber in the main body; and a first refrigerant. A first refrigeration apparatus including a first compressor for compressing, a first expansion valve for expanding the first refrigerant, a first evaporator for evaporating the first refrigerant, and supplying cold air to the first storage chamber; A second refrigeration unit including a second compressor for compressing a second refrigerant, a second expansion valve for expanding the second refrigerant, and a second evaporator for evaporating the second refrigerant, and supplying cold air to the second storage chamber Device; And a first tube condensing the first refrigerant, a second tube condensing the second refrigerant and independent of the first tube, and a refrigerant passing through one of the first tube and the second tube. And a dual pass condenser having heat dissipation fins in contact with both the first tube and the second tube so as to dissipate heat through the whole.

According to the spirit of the present invention, the heat exchanger includes a first inlet and a second inlet for introducing a refrigerant; a first outlet and a second outlet for allowing the refrigerant to flow out; and a first inlet for exchanging the refrigerant introduced into the first inlet. A first heat exchange pass that flows out to the outlet and the refrigerant flowing into the second inlet to the heat exchange to the second outlet and a tube forming a second heat exchange path independent of the first heat exchange pass, the first heat exchange pass And a tube configured to heat-exchange the heat of the refrigerant passing through any one of the second heat exchange paths through the entire tube. And a heat exchange fin provided to contact the tube.

Here, the tube may be integrally formed.

In another aspect, according to the spirit of the present invention, a heat exchanger heat-exchanges a first inlet and a second inlet for introducing a refrigerant, a first outlet and a second outlet for flowing out a refrigerant, and a refrigerant introduced into the first inlet. A first heat exchange tube flowing out to the first outlet; and a second heat exchange tube heat exchanging the refrigerant introduced into the second inlet to the second outlet, the second heat exchange tube being provided separately from the first heat exchange tube. Heat exchange tubes; And a heat exchange fin contacting both the first heat exchange tube and the second heat exchange tube to heat-exchange heat of the refrigerant passing through any one of the first heat exchange tube and the second heat exchange tube. It includes.

According to the spirit of the present invention, since the refrigerator independently circulates two refrigeration cycles with two compressors, power consumption may be improved in cooling the freezing compartment and the refrigerating compartment to different temperature ranges.

At this time, it is possible to effectively dissipate heat generated in the two refrigeration cycles.

In addition, since only two compressors and one responder are disposed in the machine room, the machine room may be easily arranged.

In particular, if a dual pass condenser having two condensation paths formed independently of each other can be used to circulate two refrigeration cycles with one condenser, the space utilization of the machine room can be increased.

1 is a view showing a refrigeration cycle of a refrigerator according to a first embodiment of the present invention.
2 is a diagram illustrating an arrangement structure of a refrigeration apparatus of a refrigerator according to a first embodiment of the present invention.
3 is a cross-sectional view illustrating an arrangement structure of a machine room of the refrigerator of FIG. 2.
4 is a cross-sectional view showing another arrangement structure of the machine room of the refrigerator according to the first embodiment of the present invention.
5 is a view illustrating an arrangement structure of a refrigerating device of a refrigerator according to a second embodiment of the present invention.
FIG. 6 is a view illustrating an installation state of a heat dissipation pipe of the refrigerator of FIG. 5.
7 is a diagram illustrating an arrangement structure of a refrigerating device of a refrigerator according to a third embodiment of the present invention.
8 is a view showing an arrangement structure of a refrigeration apparatus of a refrigerator according to a fourth embodiment of the present invention.
9 is a view showing a refrigeration cycle of the refrigerator according to the fifth embodiment of the present invention.
10 is a view showing the arrangement of the refrigeration apparatus of the refrigerator according to the fifth embodiment of the present invention.
FIG. 11 shows a dual pass condenser of the refrigerator of FIG. 10.
FIG. 12 is a view of the dual pass condenser of the refrigerator of FIG. 11 as viewed in the A direction; FIG.
FIG. 13 is a view illustrating an expanded state of a condensation path of a dual pass condenser of the refrigerator of FIG. 12;
14 is a view for explaining the structure of the baffle of the dual pass condenser of the refrigerator of FIG.
FIG. 15 shows a tube of a dual pass condenser of the refrigerator of FIG. 10;
FIG. 16 is a view for explaining a relationship between a baffle and a tube of the dual pass condenser of the refrigerator of FIG. 10; FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail.

1 is a view showing a refrigeration cycle of the refrigerator according to the first embodiment of the present invention, Figure 2 is a view showing the arrangement of the refrigeration apparatus of the refrigerator according to the first embodiment of the present invention, Figure 3 2 is a cross-sectional view showing the arrangement of the machine room of the refrigerator of FIG. 2, and FIG. 4 is a cross-sectional view showing another arrangement structure of the machine room of the refrigerator according to the first embodiment of the present invention.

1 to 4, the refrigerator 1 according to the first embodiment of the present invention includes a main body 10 and a plurality of storage chambers 21 and 22 formed inside the main body 10 to store food. ) And a refrigerating device for supplying cold air to the storage chambers 21 and 22.

The main body 10 includes an inner wound 11 (FIG. 6), an outer wound 12 (FIG. 6) coupled to an outer side of the inner wound 11, and a heat insulating material 13 disposed between the inner wound 11 and the outer wound 12. 6). A plurality of storage chambers 21 and 22 may be formed in the inner box 11, and the inner box 11 may be integrally formed of a resin material. The outer box 12 forms the exterior of the refrigerator 1 and may be formed of a metal material to have aesthetics and durability.

As the heat insulating material 13, a foamed urethane foam may be used, and after the inner phase 11 and the outer phase 12 are combined, the urethane stock solution may be formed between the inner phase 11 and the outer phase 12 and foamed and cured. .

The main body 10 may have a box shape with an approximately open front surface. The main body 10 may have an upper wall 14, a bottom wall 15, a rear wall 19, and both sidewalls 16. In addition, the main body 10 may have an intermediate wall 18 that divides the internal space from side to side. By the intermediate wall 18, the storage chambers 21 and 22 can be divided into a first storage chamber 21 on the right side and a second storage chamber 22 on the left side. The intermediate wall 18 naturally includes a heat insulating material, and the first storage compartment 21 and the second storage compartment 22 may be insulated from each other.

Therefore, the first storage chamber 21 and the second storage chamber 22 are provided so that the front surface is opened, the open front surface of the first storage chamber 21 is opened and closed by the first door 21a, the second storage chamber 22 The open front of the) can be opened and closed by the second door (22a). The first door 21a and the second door 22a may be hinged to the main body 10 to be rotatable.

Meanwhile, the main body 10 further includes a front rim wall 17 (FIG. 8), and the first door 21 a and the second door 22 a are in close contact with the front rim wall 17 so that the first storage chamber 21 is closed. And the second storage chamber 22 can be sealed. The first door 21a and the second door 22a may include a heat insulating material therein to insulate the first storage compartment 21 and the second storage compartment 22.

As described above, in the refrigerator 1 according to the first embodiment of the present invention, the first storage compartment 21 is formed on the inner right side of the main body 10, and the second storage chamber 22 is formed on the inner left side of the main body 10. Each of the storage compartments 21 and 22 may be a so-called side by side refrigerator opened and closed by rotating doors 21a and 22a hinged to the main body 10. Hereinafter, the refrigerators according to other exemplary embodiments will also be described on the premise that these two-door refrigerators are provided. However, the idea of the present invention is not limited to the two-door refrigerators, and a refrigerator having a plurality of storage compartments 21 and 22 has a form. Note that it can be applied throughout.

Meanwhile, the first storage compartment 21 and the second storage compartment 22 may be used for different purposes. That is, the first storage compartment 21 may be used as a freezing compartment for keeping food at a temperature of about 20 ° C. or less, and the second storage compartment 22 may be maintained at a temperature of about 0 ° C. to 5 ° C. It can be used as a refrigerator for storing cold. Of course, the uses of the first storage compartment 21 and the second storage compartment 22 may be interchanged. However, it will be described below on the premise that the first storage compartment 21 is used as a freezing compartment and the second storage compartment 22 is used as a refrigerating compartment.

The refrigeration apparatus of the refrigerator 1 according to the first embodiment of the present invention may independently cool the first storage compartment 21 and the second storage compartment 22 by circulating a plurality of independent cooling cycles. To this end, the refrigeration apparatus may include a first refrigeration apparatus for supplying cold air to the first storage chamber 21 and a second refrigeration apparatus for supplying cold air to the second storage chamber 22.

The first refrigeration apparatus may circulate the first refrigerant, and the second refrigeration apparatus may circulate the second refrigerant separate from the first refrigerant. However, the names of the first refrigerant and the second refrigerant are merely used to distinguish between refrigerants circulating different refrigeration cycles through different refrigerating devices, and do not mean that the types of the first refrigerant and the second refrigerant are different from each other. . That is, the first refrigerant and the second refrigerant may be the same kind or different kinds. As the first and second refrigerants, any one of R-134a, R-22, R-12, and ammonia may be used.

The first refrigeration apparatus includes a first compressor 32 for compressing the first refrigerant at high temperature and high pressure, a first condenser 33 for condensing the first refrigerant in the gas phase into a liquid phase, and an expansion of the first refrigerant at low temperature and low pressure. A first expansion valve 34 for releasing, a first evaporator 35 for evaporating the liquid first refrigerant in the gas phase, and a first refrigerant guiding the first refrigerant to components of the first refrigerating device. It may be configured to include a pipe 36 and a first blowing fan 37 for forcibly flowing the air of the first storage chamber (21).

Here, the first evaporator 35 may evaporate the first refrigerant and take out latent heat of the surroundings to generate cold air, and the generated cold air may be supplied to the first storage chamber 21 through the first blowing fan 37. have.

Meanwhile, the first compressor 32 may be a hermetic reciprocating compressor, and the first condenser 33 may be an air-cooled condenser having a heat dissipation fin and a tube.

Meanwhile, the first compressor 32 and the first condenser 33 may be disposed in the machine room 23 formed under the main body 10. The machine room 23 is partitioned and insulated from the storage rooms 21 and 22.

One surface of the machine room 23 may be opened, and the machine room cover 25 may be detachably coupled to the open surface of the machine room 23. Ventilation openings 26a and 26b may be formed in the machine room cover 25, and the ventilation openings 26a and 26b may include inlets 26a through which air is introduced and outlets 26b through which air is discharged. The machine room blowing fan 24 may be disposed in the machine room 23.

The second refrigeration apparatus includes a second compressor 42 for compressing the second refrigerant at high temperature and high pressure, a second condenser 43 for condensing the second refrigerant in the gas phase into a liquid phase, and a second refrigerant at low temperature and low pressure. Second expansion valve (44) for supplying, a second evaporator (45) for evaporating the liquid second refrigerant into the gas phase, and a second refrigerant for guiding the second refrigerant to the components of the second refrigeration apparatus. It may be configured to include a pipe 46 and a second blowing fan 47 for forcibly flowing the air of the second storage chamber (22).

Here, the second evaporator 45 may evaporate the second refrigerant and take out latent heat of the surroundings to generate cold air, and the generated cold air may be supplied to the second storage chamber 22 through the second blowing fan 47. have.

Here, the second compressor 42 may be a hermetic reciprocating compressor such as the first compressor 32. However, since the second compressor 42 has a smaller load than the first compressor 32, the second compressor 42 may have a smaller size. In addition, the second compressor 42 may be disposed inside the machine room 23 together with the first compressor 32 and the first condenser 33. The second compressor 42 may be cooled by the forced flow of air by the machine room blowing fan 24 together with the first compressor 32 and the first condenser 33.

Meanwhile, unlike the first compressor 32, the first condenser 33, and the second compressor 43, the second condenser 43 may not be disposed inside the machine room 23. In addition, unlike the first condenser 33, the second condenser 43 may be a heat dissipation pipe 43a. A heat dissipation fin may not be attached to the heat dissipation pipe 43a. Instead, the heat dissipation pipe 43a may be bent in a zigzag several times to increase the heat dissipation area.

The heat dissipation pipe 43a may be disposed to be exposed to the outside on the outer side of the rear wall 19 of the main body 10 as shown in FIG. 2. Further, the heat radiation pipe 43a may be attached to the outer surface of the outer shell so that the heat of the heat radiation pipe 43a is conducted to the outer box so that the heat dissipation area can be further increased. The heat dissipation pipe 43a can be cooled by natural convection of air.

In this manner, the first compressor 32, the first condenser 33, the second compressor 42, and the second condenser 43 do not have all the insides of the machine room 23, and the first compressor ( 32, only the first condenser 33 and the second compressor 42 are disposed inside the machine chamber 23, and the second condenser 43 is disposed outside the machine chamber 23, thereby Complexity can be avoided and heat dissipation effect can be improved.

Of course, when the space of the machine room 23 is enlarged, it is preferable to arrange both the first compressor 32, the first condenser 34, the second compressor 42, and the second condenser 43 inside the machine room 23. It may be possible, but this is not preferable because it results in a reduction in the space of the storage compartments 21 and 22 relative to the size of the main body 10.

On the other hand, the internal arrangement of the machine room 23 is, as shown in Fig. 2 and 3, the first compressor 32 is disposed on one side of the inside of the machine room 23, the second compressor 42 is the machine room 23 It may be disposed on the other side of the inside. That is, the first compressor 32 is disposed to be biased toward the side wall 16a of the machine room 23 from the center of the machine room 23, and the second compressor 42 is located at the center of the machine room 23. It may be arranged so as to be biased toward the other side wall 16b side of 23.

As shown, although the first compressor 32 is disposed below the first storage chamber 21 and the second compressor 42 is disposed below the second storage chamber 22, the first compressor 32 is not necessarily limited thereto and the positions are mutually different. It does not matter if it changes. However, considering the load applied to the bottom wall 15, the first compressor 32 and the second compressor 42 may be disposed on both sides of the machine room 23, respectively.

In addition, the first condenser 33 and the machine room blowing fan 24 may be disposed on a straight line between the first compressor 32 and the second compressor 42. In FIGS. 2 and 3, the first compressor 32, the machine room blowing fan 24, the first condenser 33, and the second compressor 42 are sequentially arranged. However, as illustrated in FIG. The compressor 32, the first condenser 233, the machine room blowing fan 224, and the second compressor 42 may be arranged in this order.

At this time, the machine room blowing fan 24 may be composed of a fan blade 24a for forcibly flowing air and a fan motor 24b for driving the fan blade 24a, and the direction of the wind is the same as the direction of the rotating shaft. Is preferably.

Further, the wind direction of the machine room is preferably formed to face from the second compressor 42 side to the first compressor 32 side. That is, the air introduced into the machine room 23 through the inlet port 26a cools the second compressor 42, the first condenser 33, and the first compressor 32 in order, and the machine room through the outlet port 26b. (23) It is preferable to flow out.

That is, in the arrangement structure shown in FIG. 3, the machine room blowing fan 24 sucks air from the condenser 33 side and discharges air to the first compressor 32 side. In the arrangement structure shown in FIG. The fan 224 sucks air from the second compressor 42 side and discharges air to the condenser 233 side.

This wind direction prevents the heat dissipation of the first compressor 42 (the freezer) from which the heat generation amount is greater than that of the second compressor 42, affects the heat dissipation of the condensers 33 and 233 and the second compressor 42 (the refrigerator). The energy consumed by heat dissipation of 23 can be reduced. Therefore, it is possible to prevent the heat exchange efficiency of the condenser (33,233) and the damage caused by the overload of the second compressor (42).

FIG. 5 is a view illustrating an arrangement structure of a refrigeration apparatus of a refrigerator according to a second embodiment of the present invention, and FIG. 6 is a view illustrating an installation state of a heat dissipation pipe of the refrigerator of FIG. 5.

The arrangement structure of the refrigerating device of the refrigerator 2 according to the second embodiment of the present invention will be described with reference to FIGS. 5 to 6. The same reference numerals are given to the same configuration as the first embodiment of the present invention, and the description thereof may be omitted.

In the refrigerating device of the refrigerator 2 according to the second embodiment of the present invention, the refrigerator 1 according to the first embodiment of the present invention and the rest of the configuration is the same, the position of the second condenser is different.

That is, unlike the first embodiment, the second condenser composed of the heat dissipation pipe 43b may be disposed in the rear wall 19 of the main body 10.

Specifically, the heat dissipation pipe 43b may be disposed between the inner wound 11 and the outer wound 12 of the rear wall 19. In particular, it may be arranged to contact the inner surface of the trauma 12. In this case, the heat dissipation pipe 43b may be attached to the inner surface of the outer box 12 by the aluminum tape 20 having high thermal conductivity.

Thus, the heat of the refrigerant passing through the heat dissipation pipe 43b may be conducted to the outer box 12 through the aluminum tape 20, and may be radiated by natural convection of air in the outer box 12. In addition, the heat of the refrigerant passing through the heat dissipation pipe 43b to the inner phase 11 side can be prevented by the heat insulating material 13. Therefore, the risk of the heat of the heat radiation pipe 43b penetrating into the storage chambers 21 and 22 can be prevented.

The heat dissipation pipe 43b may be attached to the inner surface of the trauma 12 by aluminum tape 20 before the inner trauma 11 and the trauma 12 are joined, and the inner trauma 11 and the trauma 12 are joined. Later, it can be firmly supported by the heat insulating material 13 which is foamed and cured between the inner wound 11 and the outer wound 12.

In this way, the heat dissipation pipe 43b is disposed between the inner box 11 and the outer box 12 so that the heat dissipation pipe 43b may not be exposed to the outside, thus providing sufficient space for arranging the refrigerator in comparison with the refrigerator of the first embodiment. The appearance of the refrigerator can be improved.

FIG. 7 is a view illustrating an arrangement structure of a refrigerating device of a refrigerator according to a third embodiment of the present invention, and FIG. 8 is a view illustrating an arrangement structure of a refrigerating device of a refrigerator according to a fourth embodiment of the present invention.

With reference to FIGS. 7 to 8, an arrangement structure of a refrigerator apparatus of a refrigerator according to a third embodiment of the present invention and an arrangement structure of the refrigerator apparatus of the refrigerators 3 and 4 according to a fourth embodiment of the present invention will be described. . The same components as those in the first and second embodiments of the present invention are denoted by the same reference numerals and description thereof may be omitted.

As shown in FIG. 7, the second condenser of the refrigerator 3 according to the third embodiment of the present invention may be formed of a heat dissipation pipe 43c and may be provided on both sidewalls 16 of the main body 10.

It can be disposed between the inner wound (11, Fig. 5) and the outer wound (12, Fig. 5), and can be attached to the inner surface of the outer wound (12) by aluminum tape (20, Fig. 5), the heat insulating material (13, It can be supported by Figure 5) is the same as the second embodiment of the present invention.

As shown in FIG. 8, the second condenser of the refrigerator 4 according to the fourth embodiment of the present invention may be formed of a heat dissipation pipe 43d and provided on the front edge wall 17 of the main body 10. have.

It can be disposed between the inner wound (11, Fig. 5) and the outer wound (12, Fig. 5), and can be attached to the inner surface of the outer wound (12) by aluminum tape (20, Fig. 5), the heat insulating material (13, It can be supported by Figure 5) is the same as the second and third embodiments of the present invention. At this time, the heat dissipation pipe 43d may simultaneously perform a function of preventing the implantation of the front edge wall 17 due to the temperature change caused by the opening and closing of the doors 21a and 22a. In FIG. 8, the heat dissipation pipe 43d is provided only in a portion where the second door 22a is in close contact with the front edge wall 17. Of course it can.

As described above, the configuration and arrangement of the refrigerating device of the first to fourth embodiments of the present invention have been described. As such, the first compressor 32, the first condenser 33, and the second compressor 42 may be machined with a fan. Cooling through forced flow by means of 24) and by placing the second condenser 43 outside the machine room 23 and cooling through natural convection of air, efficient cooling of a plurality of independently circulated cooling cycles. It is possible to arrange the refrigeration apparatus without enlarging the volume of the machine room 23, and to reduce the energy consumed in the machine room heat dissipation.

9 is a view showing a refrigeration cycle of the refrigerator according to the fifth embodiment of the present invention, Figure 10 is a view showing the arrangement of the refrigeration apparatus of the refrigerator according to the fifth embodiment of the present invention.

9 to 10, a structure of a refrigeration cycle and a refrigerating device of a refrigerator according to a fifth embodiment of the present invention will be described. The same components as those in the first to fourth embodiments of the present invention may be denoted by the same reference numerals and description thereof may be omitted.

The refrigerating device of the refrigerator 5 according to the fifth embodiment of the present invention also circulates a plurality of independent refrigeration cycles, as in the first to fourth embodiments of the present invention, to circulate the first storage compartment 21 and the second storage compartment. (22) can be cooled independently. To this end, the refrigeration apparatus may include a first refrigeration apparatus for supplying cold air to the first storage chamber 21 and a second refrigeration apparatus for supplying cold air to the second storage chamber 22. The first refrigeration apparatus may circulate the first refrigerant, and the second refrigeration apparatus may circulate the second refrigerant separate from the first refrigerant.

The first refrigeration unit includes a first compressor (32), a dual pass condenser (101), a first expansion valve (34), a first evaporator (35), a first blower fan (37), and a first refrigerant. And a second refrigeration unit comprising a second compressor (42), a dual pass condenser (101), a second expansion valve (44), a second evaporator (45), and a second blower fan. 47 and the second refrigerant pipe 46 may be included.

That is, the first refrigeration apparatus and the second refrigeration apparatus may share the dual pass condenser 101 which is a device for condensing the refrigerant. The dual pass condenser 101 may be referred to as a condenser in which a plurality of condensers are integrated to increase space utilization and heat exchange efficiency. The dual pass condenser 101 has a first condensation path 141 (FIG. 13) through which the first refrigerant passes, and a second condensation path 142 (FIG. 13) through which the second refrigerant passes, and the first refrigerant and the second refrigerant. All refrigerants can be condensed. Here, the first condensation path 141 and the second condensation path 142 are formed independently of each other. Detailed configuration of the dual pass condenser 101 will be described later.

As shown in FIGS. 9 and 10, the dual pass condenser 101 may be disposed inside the machine room 23 together with the first compressor 32 and the second compressor 42. Since both the first refrigerant of the first refrigeration cycle and the second refrigerant of the second refrigeration cycle can be condensed through the dual pass condenser 101, the dual pass condenser 101 in the refrigerator 5 according to the fifth embodiment of the present invention. Condenser other than) may not be necessary.

With regard to the arrangement inside the machine room 23, the structure applied to the first to fourth embodiments of the present invention can be applied as it is. That is, the first compressor 32 and the second compressor 42 may be disposed on both sides of the machine room 23, and the dual pass condenser 101 may be disposed therebetween. The machine room blowing fan 24 may blow wind in the directions of the second compressor 42, the dual pass condenser 101, and the first compressor 32.

 FIG. 11 is a view illustrating a dual pass condenser of the refrigerator of FIG. 10, and FIG. 12 is a view of the dual pass condenser of the refrigerator of FIG. 11 as viewed from the A direction. FIG. 13 illustrates a state in which the condensation path of the dual pass condenser of the refrigerator of FIG. 12 is unfolded. FIG. 14 is a view illustrating a structure of a baffle of a dual pass condenser of the refrigerator of FIG. 10, FIG. 15 is a view illustrating a tube of the dual pass condenser of the refrigerator of FIG. 10, and FIG. 16 is a dual view of the refrigerator of FIG. 10. It is a figure for demonstrating the relationship of the baffle and tube of a pass condenser.

With reference to FIGS. 11-16, the structure of the dual pass condenser 101 of this invention is explained in full detail. As shown in FIG. 11, the dual pass condenser 101 includes a plurality of headers 111 and 112 through which refrigerant flows in and out, a stacked flat tube 121 for communicating between the plurality of headers 111 and 112, and a tube 121. It includes a heat radiation fin 150 in contact with.

The plurality of headers 111 and 112 may include a first header 111 and a second header 112. The first header 111 may include a first inlet 131 through which a first refrigerant flows in and a second refrigerant flow through the headers 111 and 112. The second inlet 133 may be provided, and the second outlet 134 through which the second refrigerant flows out may be provided. The first outlet 132 through which the first refrigerant flows out may be provided in the second header 112.

Naturally, as shown in FIG. 10, the first inlet 131 is connected to the first compressor 32, the first outlet 132 is connected to the first expansion valve 34, and the second inlet 133 is connected to the first inlet 133. In the second compressor 42, the second outlet 134 may be connected to the second expansion valve 144, respectively.

In addition, as illustrated in FIG. 13, the dual pass condenser 101 may include a first condensation path 141 that condenses the first refrigerant introduced into the first inlet 131 and guides the first refrigerant to the first outlet 132. And a second condensation path 142 condensing the second refrigerant introduced into the second inlet 133 to guide the second outlet 134. The first condensation path 141 and the second condensation path 142 may be formed separately to prevent mixing of the first refrigerant and the second refrigerant.

Meanwhile, the first condensation path 141 and the second condensation path 142 may be formed by the internal spaces 111f and 112f of the headers 111 and 112 and the channel 123 of the tube 121.

In detail, the first header 111 has an outer wall 111a having both ends open and having an inner space 111f, and an opening 111b formed in the longitudinal direction at the outer wall 111a to communicate with the inner space 111f. Have In this case, only one opening 111b may be formed and may be sealed by the tube 121. Header caps 111d and 111e may be coupled and sealed at both ends of the first header 111 to be opened.

Similarly, the second header 112 also has the same configuration as the first header 111, and is formed in the longitudinal direction at the outer wall 112a and the outer wall 112 at both ends having an inner space 112f, and the inner space 112f. ) Has only one opening 112b, and only one opening 112b may be formed and sealed by the tube 121. Header caps 112d and 112e may be coupled to open ends of the second header 112.

The tube 121 is an integral flat tube having a plurality of channels 123, the both ends of which are first headers through openings 111b of the first header 111 and openings 112b of the second header 112, respectively. The internal space 111f of the 111 and the internal space 112f of the second header 112 are partially inserted.

In this case, the insertion depth of the tube 121 may be limited by the baffle 160 disposed on the headers 111 and 112. The baffle 160 is basically disposed in the internal spaces 111f and 112f of the headers 111 and 112 to partition the internal spaces 111f and 112f of the headers 111 and 112 and guide the flow of the refrigerant. 13, a cross section of the first header 111 is illustrated. Referring to FIG. 13, a baffle 160 is formed with a stopper part 161 that can limit the insertion depth of the tube 121.

The stopper part 161 may have a groove shape recessed inwardly to accommodate a portion of the tube 121, and may include a first support surface 161a for preventing a flow in the insertion direction of the tube 121, and an insertion direction. It may have a second support surface 161b and a third support surface 161c to prevent the flow in the vertical direction.

The baffle 160 may have an insertion protrusion 162 protruding to be coupled to the headers 111 and 112, and an insertion protrusion (152) on the opposite outer walls 111a and 112a of the openings 111b and 112b of the headers 111 and 112. Position adjustment holes 111c and 112c may be formed into which the 162 may be inserted. Therefore, the insertion protrusion 162 of the baffle 160 is inserted into the positioning holes 111c and 112c of the headers 111 and 112 to adjust the position of the baffle 160, and then the baffle 160 and the header ( 111, 112 can be assembled.

On the other hand, the tube 121 is formed integrally, as shown in Figure 15, a flat body portion 122, and a plurality of channels 123 formed in the body portion 122 so that the refrigerant flows Can be configured. The heat dissipation fin 150 is in contact with the body portion 122. The heat dissipation fins 150 may be provided to have a width corresponding to the width of the tube 121 so as to effectively dissipate heat conducted to the entire body portion 122 to the outside.

The plurality of channels 123 of the tube 121 may be formed to have a constant width WC and a constant height HC, respectively, and may be formed in a simple shape having a constant gap GC.

At this time, the ends of the tube 121 is inserted into the internal spaces 111f and 112f of the headers 111 and 112. Since the inserted tube 121 is naturally supported by the baffle 160, a separate shape for support is unnecessary. Therefore, the processing of the tube 121 may be easy.

Meanwhile, as shown in FIG. 13, a portion 124 of the plurality of channels 123 forms part of the first condensation path 141. Let this be the first channel portion 124. In addition, the other portion 125 of the plurality of channels 123 forms part of the second condensation pass 142. Let this be the second channel section 125. Therefore, the first channel part 124 is formed in a part of the body part 122, and the second channel part 125 is formed in the other part of the body part 122.

Here, when the second refrigeration apparatus is not operated and only the first refrigeration apparatus is operated, that is, when the refrigerant flows only in the first channel portion 124 without the refrigerant flowing in the second channel portion 125, the heat of the refrigerant is increased. Since it is conducted to the entire body portion 122 can be radiated through the entire body portion 122. That is, even if the refrigerant flows only in the first channel portion 124, not only a part of the body portion 122 forming the first channel portion 124 but also another portion of the body portion 122 forming the second channel portion 125. Heat is conducted up to a part so that heat can be radiated from the entire body portion 122.

On the contrary, even when the first refrigerating device is not operated and only the second refrigerating device is operated, that is, even when the coolant flows only in the second channel part 125 without the coolant flowing in the first channel part 124, the heat of the coolant is maintained. Since it is conducted to the entire body portion 122 can be radiated through the entire body portion 122.

Therefore, in any case, since the heat dissipation is performed through the entire body portion 122, the heat dissipation area is increased, and as a result, the heat dissipation effect is increased. Of course, when the first refrigeration unit and the second refrigeration unit are operated at the same time and the refrigerant flows through the first channel unit 124 and the second channel unit 125 at the same time, the effect of increasing the heat dissipation area may be considered to be offset.

Furthermore, even if the coolant flows in only one of the first channel part 124 and the second channel part 125, the heat is conducted to the entire body part 122, so that the heat of the coolant results in the body part 122. Of course, it can be radiated through the entire heat radiation fin 150 in contact with.

On the other hand, unlike the one-piece tube of the present embodiment, a plurality of separate tubes are used, and when each of the plurality of tubes forms a different condensation path, the heat dissipation fins are brought into contact with all of the plurality of tubes so that the same heat dissipation area as in the present embodiment is achieved. We can expect the expansion effect. That is, even though the plurality of tubes are separated from each other, heat may be conducted to each other through the radiating fins.

Meanwhile, some of the plurality of channels 123 of the tube 121 may be blocked by the baffle 160. In FIG. 13, the channel 123a blocked by the baffle 160 is shown in shade. The channel 123a blocked by the baffle 160 may not form any of the first condensation path 124 and the second condensation path 125.

Although the refrigerant may flow into the blocked channel 123a, the outlet may be blocked by the baffle 160, and thus, the refrigerant may not be generated and may only be stagnant. Of course, the channel 123a to be blocked by the baffle 160 may be prevented in advance in the manufacture of the tube 121, but the material cost is increased accordingly, so that the plurality of channels 123 as in the embodiment of the present invention. ) Can be said to be efficient in terms of cost and convenience of manufacturing the tube 121 and blocking the channel 123a by the baffle 160 so as to have a predetermined width (WC) and a predetermined interval (GC).

To this end, the width WB of FIG. 16 should correspond to or be larger than the width WC of FIG. 16.

On the other hand, the dual pass condenser 101 of this configuration can be assembled by brazing bonding all the components for preventing leakage of the refrigerant, and the like. That is, the cladding material for brazing bonding may be coated on the headers 111 and 112, the header caps 111d, 111e, 112d and 112e, the baffle 160, the tube 121, and the heat dissipation fin 150. .

Accordingly, the baffle 160 is temporarily assembled into the internal spaces 111f and 112f of the headers 111 and 112, and the header caps 111d, 111e, 112d and 112e are covered with open ends of the headers 111 and 1112, and the tube ( The dual pass condenser 101 may be assembled by inserting 121 into the headers 111 and 112, placing the heat dissipation fins 150 between the tubes 121, and then inserting the heat dissipation fins 150 into the brazing furnace.

When the prefabricated dual pass condenser 101 is heated to a temperature of approximately 600 ° C. to 700 ° C. in the brazing furnace, the clad material coated on each component is melted and bonded at the same time to seal the joints of the components. Therefore, the joints of the respective components should be formed to have a somewhat gap so that the clad material melts to seal the spaced gaps.

Here, the temporary assembly of the baffle 160 into the internal spaces 111f and 112f of the headers 111 and 112 is performed by inserting the insertion protrusion 162 of the baffle 160 into the positioning holes 111c and 112c of the headers 111 and 112. It can be performed easily as described above.

Naturally, the structure of the dual pass condenser 101 according to the embodiment of the present invention is not merely applied to the condenser, but may be applied to the evaporator, as well as to the refrigerator and the air conditioner.

As described above, the refrigerating device according to the fifth embodiment of the present invention is a refrigerating device that circulates a plurality of refrigeration cycles that are independently circulated and includes any of a plurality of independent condensation passes 141 and 142 and a plurality of condensation passes 141 and 142. It includes a dual pass condenser 101 having an integrally formed tube 121 and an integral heat dissipation fin 150 so as to dissipate the heat of the refrigerant through the whole even when the refrigerant flows only in one condensation path.

Thereby, all the heating elements can be arrange | positioned inside the limited machine room 23, the heat dissipation efficiency of several refrigeration cycle can be improved, and the energy consumed for heat dissipation can be reduced.

Although the technical spirit of the present invention has been described above by specific embodiments, the scope of the present invention is not limited to these embodiments. Various embodiments that can be modified or modified by those skilled in the art without departing from the spirit and spirit of the present invention as defined in the claims will also belong to the scope of the present invention.

1: refrigerator 10: body
11: internal injury 12: trauma
13: insulation 14: upper wall
15: bottom wall 16: side wall
17: front border wall 18: middle wall
19: rear wall 20: aluminum tape
21: freezer 21a: freezer door
22: refrigerator compartment 22a: refrigerator compartment door
23: machine room 24: machine room heat radiating fan
24a: Fan wing 24b: Fan motor
25: machine room cover 26a: inlet
26b: outlet 32: first compressor
33: first condenser 34: first expansion valve
35 first evaporator 36 first refrigerant pipe
37: first blowing fan 42: second compressor
43,43a, 43b, 43c, 43d: Second condenser (heat dissipation pipe)
44 second expansion valve 45 second evaporator
46: second refrigerant pipe 47: second blowing fan
101: dual pass condenser 111: first header
111a: outer wall 111b: opening
11c: Mounting hole 111d: Cap
111e: Cap 111f: Internal space
112: second header 112a: outer wall
112b: opening 112c: mounting hole
112d: cap 112e: cap
112f: Internal space 121: Tube
122: body 123: channel
123a: blocking channel 124: first channel portion
125: second channel portion 131: first inlet
132: first outlet 133: second inlet
134: second outlet 141: first condensation pass
142: second condensation pass 150: heat dissipation fin
160: baffle 161: stopper
161a: first support surface 161b: second support surface
161c: third support surface 162: insertion protrusion
224 blower fan 233 condenser
HC: channel height GC: channel spacing
WB: baffle width WC: channel width

Claims (13)

main body;
A first storage chamber formed inside the main body;
A second storage compartment formed to be insulated from the first storage compartment in the main body;
A first refrigeration unit including a first compressor for compressing a first refrigerant, a first expansion valve for expanding the first refrigerant, and a first evaporator for evaporating the first refrigerant, and supplying cold air to the first storage chamber Device;
A second refrigeration unit including a second compressor for compressing a second refrigerant, a second expansion valve for expanding the second refrigerant, and a second evaporator for evaporating the second refrigerant, and supplying cold air to the second storage chamber Device; And
A body portion, a tube having a plurality of channels formed inside the body portion, a heat dissipation fin provided to contact the body portion for heat dissipation, and a channel of some of the plurality of channels are condensing the first refrigerant A dual pass condenser having a second condensation path independent of the first condensation path and condensing the second refrigerant, the one condensing pass and the other portion of the plurality of channels; Including,
And the first condensation path is provided inside the body longer than the second condensation path for a refrigeration device having a higher load among the first and second refrigeration devices. The method of claim 1,
The dual pass condenser further includes a first header and a second header connected to the body part, the second header is provided with a first outlet through which the first refrigerant flows out, and the first header is provided with the first header. And a first inlet through which the refrigerant flows in, a second inlet through which the second refrigerant flows in, and a second outlet. delete delete The method of claim 1,
And wherein more of said plurality of channels are used for said first condensation pass. The method of claim 1,
The refrigerator further includes a machine room formed inside the main body and a machine room cover covering the machine room.
The first chamber, a blower fan for heat dissipation, the dual pass condenser, and the second compressor are disposed in the machine room, and the machine room cover is provided with an inlet and an outlet for inlet and outlet of air into the machine room. The refrigerators, characterized in that the outlet is provided in the second compressor position in the first compressor position, respectively. delete delete The method of claim 6,
The air introduced through the inlet is cooled through the second compressor, the dual pass condenser, and the first compressor in order to be discharged through the outlet. main body;
A first storage chamber formed inside the main body;
A second storage compartment to insulate the first storage compartment from the inside of the main body;
A first refrigeration unit including a first compressor for compressing a first refrigerant, a first expansion valve for expanding the first refrigerant, and a first evaporator for evaporating the first refrigerant, and supplying cold air to the first storage chamber Device;
A second refrigeration unit including a second compressor for compressing a second refrigerant, a second expansion valve for expanding the second refrigerant, and a second evaporator for evaporating the second refrigerant, and supplying cold air to the second storage chamber Device; And
A row of refrigerant passing through a first tube condensing the first refrigerant, a second tube condensing the second refrigerant and independent of the first tube, and either one of the first tube and the second tube A dual pass condenser having heat dissipation fins in contact with both the first tube and the second tube to dissipate heat through the entire body; Including,
For the first refrigeration unit with a higher load, a path in which the first refrigerant moves inside the first tube is longer than a path in which the second refrigerant moves inside the second tube. Refrigerator characterized in that provided. delete delete delete

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