KR20090012687A - Refrigerator with evaporator installed in ice-making room - Google Patents

Abstract

A refrigerator is provided to maximize ice making effect by mounting a sub evaporator in an ice making chamber and determine an ice making amount according to the selection of a user. A sub evaporator(780) is mounted in an ice making chamber(400) for direct heat exchange between refrigerant passing through a compressor(320), a condenser(340) and an expansion unit(360) and chilled air in the ice making chamber. Refrigerant circulates through a main evaporator(380) and the sub evaporator via a main pipe and a sub pipe.

Description

REFRIGERATOR WITH EVAPORATOR INSTALLED IN ICE-MAKING ROOM}

The present invention relates to a refrigerator, and more particularly, to a refrigerator provided with an evaporator in an ice making room capable of maximizing an ice making effect of a refrigerator having an ice making room and determining an ice making amount of the ice making room according to a user's selection. will be.

Generally, a refrigerator is for freezing or refrigerating food or the like by circulating cold air by a refrigeration cycle composed of a compressor, a condenser, an expander, an evaporator, and lowering the temperature in the refrigerator.

That is, the refrigerator as described above is a compressor 10 for compressing the refrigerant into a high-temperature, high-pressure gas refrigerant as shown in the block diagram showing the refrigeration cycle of the general refrigerator of Figure 1, and the refrigerant passing through the compressor 10 Condenser 20 for condensing a high temperature and high pressure liquid refrigerant, an expander 30 for reducing the refrigerant passing through the condenser 20 to a low temperature low pressure liquid refrigerant, and a refrigerant passing through the expander 30 at a low temperature. The evaporator 40 which absorbs heat in the refrigerating compartment or the freezing compartment and keeps the temperature inside the freezing compartment or the refrigerating compartment at a low temperature while evaporating with a low pressure gas refrigerant is an essential component.

The refrigerator includes an integrated type using the inside of the body without division of the refrigerating compartment and the freezing compartment, and a separate type using the refrigerating compartment and the freezing compartment separately. The detachable type includes a top mount type having a freezer compartment at the top and a freezer compartment at the bottom, a bottom freezer type having a freezer compartment at the bottom, and a freezer and a refrigerator compartment side-by-side. It can be divided into Side Type. The top mount, bottom freezer and side-by-side type of the separate refrigerator have advantages and disadvantages, but mainly depend on the user's preference or selection.

Compared to the separate refrigerator, the integrated refrigerator is simple, and thus the description will be given based on the separate refrigerator. In addition, since the separate refrigerator has only a difference in arrangement of the refrigerating chamber and the freezing chamber constituting the refrigerator main body, a bottom freezer type refrigerator will be described below.

FIG. 2A is a block diagram illustrating a bottom freezer type refrigerator in which a conventional ice making chamber is installed in a refrigerating chamber. FIG. 2B is a block diagram illustrating a refrigerator having respective evaporators in the refrigerating chamber and the freezer compartment of FIG. 2A, and FIG. 3 is a block diagram illustrating a refrigerator having a bottom freezer type refrigerator installed in a refrigerating compartment door and an evaporator in each of the refrigerating compartment and the freezing compartment of FIG. 3A.

As shown in FIG. 2A, a conventional bottom freezer type refrigerator includes a refrigerator main body 50 in which a refrigerator compartment 54 and a freezer compartment 58 are divided up and down by partition walls 55, the refrigerator compartment 54, and a freezer compartment. (58) A refrigerator compartment door 64 and a freezer compartment door 68 that open and close each of them, and a compressor 10, a condenser 20, an expander 30, and an evaporator 40 provided on an inner wall of the refrigerator body 50. It consists of. When one evaporator 40 is provided, a cold air circulation path 70 is formed to circulate the cold air in the refrigerating chamber 54 and the freezing chamber 58 by passing through the partition wall 55 so as to exchange heat by the evaporator 40. Cold air circulates. In addition, the ice making chamber 80 is installed inside the refrigerating chamber 54 disposed above the refrigerator main body 50, and cold air is provided on the sidewall of the refrigerator main body 50 so that the cold air of the freezing chamber 58 is supplied to the ice making chamber 80. The duct 90 is formed. However, although not shown in the drawing, the ice making chamber 80 may be installed inside the freezing chamber 58 disposed under the refrigerator main body 50. 2B shows a refrigerator compartment evaporator 44 in the refrigerating compartment 54 of FIG. 2A and a freezer compartment evaporator 48 in the freezer compartment 58, respectively, to circulate inside the refrigerating compartment 54 and the freezer compartment 58. It is to precisely control the temperature of cold air.

In addition, the refrigerator of FIGS. 3A and 3B has an ice making chamber 80 installed in the refrigerating chamber 54 of FIGS. 2A and 2B installed inside the refrigerating chamber door 68 to increase the space inside the refrigerating chamber 54. It is to be used. The refrigerator of FIGS. 3A and 3B also needs to form a cold air duct 90 to supply the cold air of the freezing chamber 58 to the ice making chamber 80.

As described above, a conventional refrigerator having an ice making chamber has to form a cold air duct in order to supply cold air of the freezing compartment to the ice making chamber, and there is a problem in that ice making is not performed properly when a problem occurs in the insulation of the cold air duct.

In addition, since the cold air of the freezing chamber is supplied to the inside of the ice making chamber, the amount of ice making may vary according to the operation of the evaporator that exchanges heat with the cold of the freezing chamber, which causes problems in the independent control of the ice making chamber and the freezing chamber.

An object of the present invention devised to solve the above problems is to maximize the ice making effect of the refrigerator equipped with an ice making room, the evaporator in the ice making room to determine the amount of ice making in accordance with the user's selection It is to provide an installed refrigerator.

Other objects, specific advantages and novel features of the invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings.

In order to achieve the above object, a refrigerator provided with an evaporator in an ice-making chamber of the present invention includes a refrigerator main body for storing food, a refrigerator door for opening and closing the refrigerator main body, a main compressor installed in the refrigerator main body to compress refrigerant, and A main condenser for condensing the refrigerant passing through the main compressor, a main expander for reducing the refrigerant passing through the main condenser, and a refrigerant passing through the main expander for heat exchange with cold inside the refrigerator main body. An ice making chamber installed so as not to be influenced by cold air inside the refrigerator main body and storing water provided by ice, and installed inside the ice making chamber and passing through the main compressor, the main condenser and the main expander. A sub evaporator for exchanging a refrigerant with cold inside the ice making chamber, and the main It comprises a main pipe and a sub pipe connected to the erection and the refrigerant to circulate the sub evaporator.

The ice making chamber may be installed inside the refrigerator body.

The ice making chamber may be installed inside the refrigerator door.

The refrigerator body may be partitioned into a refrigerator compartment and a freezer compartment by partition walls, and the refrigerator door is divided into a refrigerator compartment door and a freezer compartment door that open and close the refrigerator compartment and the freezer compartment, respectively.

The apparatus may further include a cold air circulation path formed through the partition wall such that cold air of the refrigerating compartment and the freezing compartment meet and circulate with each other, wherein the main evaporator is installed in one of the refrigerating compartment and the freezing compartment.

The main evaporator may be separated into a refrigerator compartment evaporator and a freezer compartment evaporator respectively installed in the refrigerator compartment and the freezer compartment.

In addition, the refrigerator door may be rotatably supported with respect to the refrigerator main body, and further includes a hinge having a through hole through which the sub pipe passes.

In addition, the through hole is characterized in that formed on the pivot shaft of the hinge.

In addition, the subpipe is characterized in that it is flexible.

On the other hand, the refrigerator provided with an evaporator in the ice-making chamber according to the present invention, the refrigerator body for storing food, the refrigerator door for opening and closing the refrigerator body, and is provided so as not to be affected by the cold air inside the refrigerator body, An ice making chamber for making and storing ice, a main compressor and a sub compressor installed in the refrigerator main body to compress the refrigerant, a main condenser and a sub condenser for condensing the refrigerant passing through the main compressor and the sub compressor, respectively, A main expander and a sub expander for depressurizing the refrigerant passing through a condenser and a sub condenser, a main evaporator for exchanging the refrigerant passing through the main expander with cold inside the refrigerator main body, and an inside of the ice making chamber, The refrigerant passing through the sub-expander is transferred to cold inside the ice making chamber. It comprises a sub-evaporator for heat exchange, and a main pipe and a sub-pipe, respectively connected to the main evaporator and the sub-evaporator to circulate the refrigerant.

In the refrigerator provided with an evaporator in the ice making room according to the present invention, the sub-evaporator may be installed inside the ice making room to directly exchange heat with cold inside the ice making room, thereby maximizing the ice making effect.

In addition, the ice making chamber is installed inside the refrigerator door to facilitate the extraction of ice, and the sub-evaporator may be installed in the ice making chamber to maintain the maximum ice making effect.

In addition, since the refrigeration systems of the main evaporator and the sub evaporator are separately configured, the amount of ice making is not varied according to the operation ratio of the main compressor, and the ice making amount can be determined by operating the sub compressor according to a user's selection.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the refrigerator installed in the ice making room according to the present invention.

Figure 4a is a block diagram showing a first embodiment of a refrigerator equipped with an evaporator in the ice making room according to the present invention, Figure 4b is a configuration showing a state in which the main evaporator of Figure 4a separated into a refrigerator compartment evaporator and a freezer compartment evaporator FIG. 5A is a block diagram illustrating a second embodiment of a refrigerator in which an evaporator is installed in an ice making room according to the present invention, and FIG. 5B is a state in which the main evaporator of FIG. 5A is separated into a refrigerator evaporator and a freezer evaporator. 6A is a configuration diagram illustrating a third embodiment of a refrigerator in which an evaporator is installed in an ice making room according to the present invention, and FIG. 6B is a separate installation of a main evaporator of FIG. 6A into a refrigerator compartment evaporator and a freezer compartment evaporator. Figure 7a is a block diagram showing a state, Figure 7a is a block diagram showing a fourth embodiment of a refrigerator provided with an evaporator in the ice making room according to the present invention, Figure 7b is a main evaporator of the refrigerator compartment evaporator of Figure 7a And a state in which a freezer compartment evaporator is separated and installed, and FIG. 8 is a main part perspective view illustrating a state in which a subpipe passes through a hinge of a refrigerator in which an evaporator is installed in an ice maker according to the present invention.

The refrigerator equipped with an evaporator in the ice making room according to the present invention has a refrigerator main body 100, a refrigerator door 200, a main compressor 320, a main condenser 340, and a main expander 360 as shown in FIGS. 4 and 5. ), A main evaporator 380, an ice making chamber 400, a sub evaporator 780, a main pipe 500, a sub pipe 550, and a hinge 600. 6 and 7, the sub compressor 720, the sub condenser 740, and the sub expander 760 may be further included.

The refrigerator main body 100 keeps food in a low temperature state by lowering the internal temperature. In addition, the refrigerator main body 100 may be divided into a refrigerating chamber 140 and a freezing chamber 180 by the partition wall 120. That is, there is an integrated type in which the inside of the refrigerator body 100 is integrated, and a separate type separated into the refrigerating chamber 140 and the freezing chamber 180. 4 to 7 illustrate the separate refrigerator, but when the partition wall 120 is removed, the same description as that of the integrated refrigerator is omitted. Therefore, the present invention may be applied regardless of whether the interior of the refrigerator body 100 is an integrated type or a separate type, and any type of detachable top mount, bottom freeze, and side by side type may be applied. That is, the present invention is characterized in that the sub-evaporator 780 is installed in the ice making chamber 400 to be described later, any kind of refrigerator is provided with the ice making chamber 400, and the sub-evaporator 780 inside the ice making chamber 400. ) Is enough to install. Although not shown in the drawing, various types of baskets, shelves, and drawers may form an internal space of the refrigerator main body 100 to efficiently store various foods in the refrigerator main body 100.

The refrigerator door 200 opens and closes the refrigerator main body 100. The refrigerator door 200 is divided into a refrigerator compartment door 240 and a freezer compartment door 280 that open and close the refrigerator compartment 140 and the freezer compartment 180, respectively. The number of refrigerator doors 200 may be one or more, but when divided into the refrigerator compartment 140 and the freezer compartment 180, the refrigerator door 200 should be separated into a refrigerator compartment door 240 and a freezer compartment door 280, respectively. One or more of the refrigerating compartment door 240 and the freezing compartment door 280 may be installed.

The partition wall 120 is installed to partition the refrigerating chamber 140 and the freezing chamber 180, and the refrigerating chamber 140 and the freezing chamber 180 are stored at different temperatures at different temperatures depending on the type of food to store or refrigerate the food. It is installed to The partition wall 120 is not necessary in the case of an integrated refrigerator, but the partition wall 120 is required in the case of the separate refrigerator. In addition, in the case of installing the main evaporator 380 to be described later to circulate the cold air of the refrigerating chamber 140 and the freezing chamber 180, respectively, the refrigerating chamber 140 and the freezing chamber 180 by installing one main evaporator 380 May circulate the cold air together. In the case where one main evaporator 380 is installed, the partition wall 120 is formed between the refrigerating chamber 140 and the freezing chamber 180, thereby preventing the circulation of cold air. Therefore, the cold air circulation path 125 is necessary.

4A, 5A, 6A, and 7A, the cold air circulation path 125 is formed through the partition wall 120 so that cold air of the refrigerating chamber 140 and the freezing chamber 180 meet and circulate with each other. In the case of the separate refrigerator having the refrigerating compartment 140 and the freezing compartment 180 separated from each other, the cold air path inside the cold air exchanged by the main evaporator 320, which will be described later, moves to the refrigerating compartment 140 through the freezing compartment 180 first. It is possible to install a plurality of fans to form or forcibly transfer the cold air. In any case, the cold air circulation path 125 should be formed through the partition wall 120 so that the cold air of the freezing compartment 180 and the refrigerating compartment 140 meet and circulate with each other. However, when the refrigerator compartment evaporator 384 and the freezer compartment evaporator 388, which will be described later, are separately installed in each of the refrigerator compartment 140 and the freezer compartment 180, as shown in FIGS. 4B, 5B, 6B, and 7B, the cold air circulation passage 125 ) Is not necessary. That is, the refrigerator compartment evaporator 384 and the freezer compartment evaporator 388 are respectively provided in order to effectively control the temperatures of the refrigerator compartment 140 and the freezer compartment 180.

The main compressor 320 is installed in the refrigerator main body 100 to compress the refrigerant, and the main condenser 340 condenses the refrigerant passing through the main compressor 320. The main compressor 320 and the main condenser 340 are generally installed together in a chamber called a machine room disposed under the refrigerator main body 100. In addition, the main expander 360 reduces the refrigerant passing through the main condenser 340. Since the main compressor 320, the main condenser 340 and the main expander 360 is the same as the method used in the conventional refrigeration cycle, a detailed description thereof will be omitted.

The main evaporator 380 exchanges the refrigerant passing through the main expander 360 with cold inside the refrigerator main body 100. The main evaporator 380 may be installed in any one of the refrigerating chamber 140 or the freezing chamber 180 when the refrigerator main body 100 is divided into the refrigerating chamber 140 and the freezing chamber 180. That is, as shown in Figures 4a, 5a, 6a and 7a, when the cold air temperature of the refrigerating chamber 140 and the freezing chamber 180 is controlled by one main evaporator 380, the refrigerating chamber 140 and the freezing chamber 180 The cold air circulation path 125 is formed through the partition wall 120 so that the cold air meets and circulates. In addition, the main evaporator 380 may be separated into a refrigerator compartment evaporator 384 and a freezer compartment evaporator 388 respectively installed in the refrigerator compartment 140 and the freezer compartment 180, as shown in FIGS. 4B, 5B, 6B, and 7B. have. That is, the refrigerating chamber evaporator 384 controls the temperature of the cold air circulating in the refrigerating chamber 140, and the freezing chamber evaporator 388 controls the temperature of the cold air circulating in the freezing chamber 180, thereby operating each. Accordingly, the temperature inside the refrigerating chamber 140 and the freezing chamber 180 can be accurately controlled. In addition, since the function in the refrigerating cycle of the main evaporator 380 is the same as that of a prior art, the detailed description is abbreviate | omitted.

The ice making chamber 400 is installed so as not to be affected by the cold air inside the refrigerator main body 100, and stores the provided water as ice. The ice making chamber 400 may include an ice making container 420, an ice maker 440, and a dispenser 460. The ice maker 420 manufactures the provided water with ice, and the ice maker 440 is disposed under the ice maker 420 to separate and store the ice. In addition, the dispenser 460 is formed to be exposed to the outside so that the ice can be easily taken out from the outside. The ice making container 420, the ice making machine 440, and the dispenser 460 constituting the ice making room 400 may be implemented in a conventional technology, and thus, detailed description thereof will be omitted. In addition, the ice making chamber 400 may be installed inside the refrigerator main body 100 as illustrated in FIGS. 4 and 6, and inside the refrigerator door 200 as illustrated in FIGS. 5 and 7. Can be installed on Wherever the ice making chamber 400 is installed, the sub-evaporator 780, which will be described later, may be installed inside the ice making chamber 400 to maximize the ice making effect.

The sub evaporator 780 is installed in the ice making chamber 400, and cools the refrigerant passing through the main compressor 320, the main condenser 340, and the main expander 360. Heat exchange with. That is, the sub evaporator 780 directly heats cold air inside the ice making chamber 400 separately from the main evaporator 380, thereby maximizing the ice making effect and deicing according to a user's selection. 4 and 5, the sub evaporator 780 may be used in conjunction with the main compressor 320, the main condenser 340, and the main expander 360 together with the main evaporator 380. As illustrated in FIGS. 6 and 7, the sub compressor 720, the sub condenser 740, and the sub expander 760 may be separately provided to form an independent refrigeration system. In the case of operating the independent refrigeration system, the sub-compressor 720 is operated independently without the influence of the refrigeration system by the main compressor 320, and ice making of the ice making chamber 400 is performed by the user. The amount can also be determined.

The main pipe 500 and the sub pipe 550 serve as pipes to allow the refrigerant to flow. The main pipe 500 connects the main compressor 320, the main condenser 340, the main expander 360, and the main evaporator 380 to circulate the refrigerant. In addition, the sub pipe 550 is connected to the sub evaporator 780 so that the refrigerant is branched and circulated as illustrated in FIGS. 4 and 5. In addition, the sub pipe 550 includes a sub compressor 720, a sub condenser 740, and a sub expander 760 as shown in FIGS. 6 and 7 to provide the refrigerant independently of the main pipe 500. To sub evaporator 780 to circulate. On the other hand, the subpipe 700 may have flexibility. In particular, when the ice making chamber 400 is installed in the refrigerator door 200 as illustrated in FIGS. 5 and 7, the sub-evaporator 780 is also installed in the ice making chamber 400, and thus, the ice making chamber 400 is installed in the refrigerator main body 100. In order to receive the refrigerant from the main compressor 320 or the sub compressor 720, the disconnected refrigerator door 200 and the refrigerator main body 100 need to be connected. To this end, even if the refrigerator door 200 is rotated, the flexible sub pipe 550 may be provided to smoothly supply the refrigerant to the sub evaporator 780 without intervening with other components.

As illustrated in FIGS. 5, 7, and 8, the hinge 600 pivotally supports the refrigerator door 200 with respect to the refrigerator main body 100, and passes through the sub pipe 550. Ball 650 is provided. Accordingly, when the sub pipe 550 is connected to the sub evaporator 780, even when the refrigerator door 200 is rotated, the sub pipe 550 is easily inserted into and fixed to the through hole 650 formed in the hinge 600. I can support it. In addition, the hinge 600 may have the through hole 650 formed on the rotation shaft of the hinge 600. That is, the through hole 650 may be formed on the rotation shaft of the hinge 600 to minimize a section between the refrigerator main body 100 and the refrigerator door 200. It is preferable to install a bushing or the like in the through hole 650 so that the sub pipe 550 is not damaged.

The embodiments of the present invention described above and illustrated in the drawings should not be construed as limiting the technical idea of the present invention. The protection scope of the present invention is limited only by the matters set forth in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention, as will be apparent to those skilled in the art.

1 is a configuration diagram showing a refrigeration cycle of a typical refrigerator,

FIG. 2A is a block diagram illustrating a bottom freezer type refrigerator in which a conventional ice making chamber is installed in a refrigerating chamber.

Figure 2b is a block diagram showing a refrigerator provided with each evaporator in the refrigerator compartment and the freezer compartment of Figure 2a,

3A is a block diagram illustrating a bottom freezer type refrigerator in which a conventional ice making chamber is installed in a refrigerating chamber door,

Figure 3b is a block diagram showing a refrigerator having each evaporator in the refrigerator compartment and the freezer compartment of Figure 3a,

Figure 4a is a block diagram showing a first embodiment of a refrigerator provided with an evaporator in the ice making room according to the present invention,

4B is a configuration diagram illustrating a state in which the main evaporator of FIG. 4A is separated into a refrigerator compartment evaporator and a freezer compartment evaporator,

5A is a configuration diagram showing a second embodiment of a refrigerator in which an evaporator is installed in an ice making room according to the present invention;

FIG. 5B is a block diagram illustrating a state in which the main evaporator of FIG. 5A is separated into a refrigerator compartment evaporator and a freezer compartment evaporator.

6A is a block diagram illustrating a third embodiment of a refrigerator in which an evaporator is installed in an ice making room according to the present invention;

FIG. 6B is a block diagram illustrating a state in which the main evaporator of FIG. 6A is separately installed into a refrigerator compartment evaporator and a freezer compartment evaporator.

7A is a configuration diagram showing a fourth embodiment of a refrigerator in which an evaporator is installed in an ice making room according to the present invention;

FIG. 7B is a block diagram illustrating a state in which the main evaporator of FIG. 7A is separated into a refrigerator compartment evaporator and a freezer compartment evaporator.

FIG. 8 is a perspective view illustrating a state in which a subpipe passes through a hinge of a refrigerator provided with an evaporator in an ice making room according to the present invention. FIG.

<Explanation of symbols for the main parts of the drawings>

100: refrigerator body

120: bulkhead 125: cold air circulation

140: refrigerator compartment 180: freezer compartment

200: refrigerator door

240: refrigerator compartment door 280: freezer compartment door

320: main compressor 340: main condenser

360: main inflator 380: main evaporator

384: refrigerator compartment evaporator 388: freezer compartment evaporator

400: ice making room

500: main pipe 550: sub pipe

600: hinge 650: through hole

720: sub compressor 740: sub condenser

760: Sub Inflator 780: Sub Evaporator

Claims (10)

The refrigerator body storing food, A refrigerator door for opening and closing the refrigerator body; A main compressor installed in the refrigerator main body to compress the refrigerant; A main condenser for condensing the refrigerant passing through the main compressor; A main expander for reducing the refrigerant passing through the main condenser; A main evaporator for exchanging the refrigerant passing through the main expander with cold inside the refrigerator main body; An ice making room installed so as not to be influenced by cold air inside the refrigerator main body and storing the provided water into ice; A sub-evaporator installed inside the ice making chamber and configured to heat-exchange the refrigerant passing through the main compressor, the main condenser and the main expander with cold inside the ice making chamber; And a main pipe and a sub pipe connected to the main evaporator and the sub evaporator so that the refrigerant circulates, respectively. The method of claim 1, And the ice making chamber is installed inside the refrigerator body. The method of claim 1, And the ice making chamber is installed inside the refrigerator door. The method according to claim 2 or 3, The refrigerator body is partitioned into a refrigerator compartment and a freezer compartment by partition walls, The refrigerator door is a refrigerator provided with an evaporator in the ice-making compartment, characterized in that separated into a refrigerator compartment door and a freezer compartment door for opening and closing the refrigerator compartment and the freezer compartment, respectively. The method of claim 4, wherein Further comprising a cold air circulation path formed through the partition wall so that the cold air of the refrigerating chamber and the freezing chamber meet and circulate with each other, And the main evaporator is installed in any one of the refrigerating chamber or the freezing chamber. The method of claim 4, wherein And the main evaporator is separated into a refrigerator compartment evaporator and a freezer compartment evaporator respectively installed in the refrigerator compartment and the freezer compartment. The method of claim 3, And a hinge having a through hole through which the sub pipe passes and supporting the refrigerator door in a rotatable manner with respect to the refrigerator main body. The method of claim 7, wherein The through hole is a refrigerator provided with an evaporator in the ice making chamber, characterized in that formed on the pivot shaft of the hinge. The method of claim 3, The sub-pipes are flexible, characterized in that the evaporator is installed in the ice-making room. The refrigerator body storing food, A refrigerator door for opening and closing the refrigerator body; An ice making room installed so as not to be influenced by cold air inside the refrigerator main body and storing the provided water into ice; A main compressor and a sub-compressor respectively installed in the refrigerator main body to compress the refrigerant; A main condenser and a sub condenser for condensing the refrigerant passing through the main compressor and the sub compressor, respectively; A main expander and a sub expander for reducing the refrigerant passing through the main condenser and the sub condenser, respectively; A main evaporator for exchanging the refrigerant passing through the main expander with cold inside the refrigerator main body; A sub-evaporator installed inside the ice-making chamber and configured to heat-exchange the refrigerant passing through the sub-expander with the cold inside the ice-making chamber; And a main pipe and a sub pipe connected to the main evaporator and the sub evaporator so that the refrigerant circulates, respectively.

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