KR102182084B1 - Refrigerator - Google Patents

Abstract

A refrigerator according to an embodiment of the present invention includes an evaporator provided with a refrigerant pipe and a pin; A defrost water tray provided under the evaporator and storing condensed water generated in the evaporator; And a plurality of defrost heaters supplying heat to the evaporator or the defrost water tray.

Description

Refrigerator {Refrigerator}

The present invention relates to a refrigerator.

In general, a refrigerator is provided with a plurality of storage compartments in which storage materials are accommodated to freeze or refrigerate food, and one surface of the storage compartment is opened to receive and take out the food. The plurality of storage chambers include a freezing chamber for frozen storage of food and a refrigerating chamber for refrigerating storage of food.

In the refrigerator, a refrigeration system in which refrigerant circulates is driven. Devices constituting the refrigeration system include a compressor, a condenser, an expansion device, and an evaporator. The refrigerant is evaporated while passing through the evaporator, and in this process, the air passing through the evaporator may be cooled. In addition, the cooled cold air may be supplied to the freezing chamber or the refrigerating chamber. In general, the evaporator is installed at the rear side of the storage chamber and is configured to extend in the vertical direction.

Recently, increasing the internal storage space of refrigerators, that is, storage rooms, has become a major concern of consumers. Accordingly, many efforts have been made to reduce a space for accommodating parts of a refrigeration system required for a refrigerator and to increase the volume of the storage compartment relatively.

However, as described above, when the evaporator is provided at the rear side of the storage chamber, in order to secure space for installation of the evaporator, there is a difficulty in having to relatively reduce the size of the storage chamber.

In particular, the refrigerator includes a drawer so as to be pulled out from the storage compartment to the front. Due to the arrangement of the evaporator, as the size of the storage chamber, that is, the width in the front-rear direction, is reduced, there is a problem that the length of the drawer is shortened, and thereby the draw distance of the drawer is shortened. When the withdrawal distance of the drawer is shortened, there is a problem that it is inconvenient for the user to store food in the drawer.

In order to solve this problem, a technology has been developed to install an evaporator in the partition wall that divides the refrigerating chamber and the freezing chamber. On the other hand, in a side-by-side type refrigerator in which the freezing chamber and the refrigerating chamber are arranged left and right, since the partition wall is configured to extend in the vertical direction between the freezing chamber and the refrigerating chamber, the defrost water generated from the evaporator is discharged. It can be easy.

However, in a refrigerator of a type in which the refrigerating chamber and the freezing chamber are arranged in the vertical direction, there is a problem that it is difficult to discharge the defrost water generated from the evaporator because the partition wall is configured to extend in the horizontal direction between the freezing chamber and the refrigerating chamber.

The related prior art information is as follows.

1.Registration number (registration date): EP 2,694,894 (March 23, 2016)

2. Title of invention: COMBINATION DEVICE FOR REFRIGERATION

The above prior art relates to a refrigerator in which the refrigerating compartment is located above the refrigerator and the freezer compartment is located below the refrigerator. Disclosed is a technology for installing an evaporator inside a partition wall separating the refrigerating chamber and the freezing chamber.

However, the evaporator of the prior art is configured to be disposed inclined downward to the rear. The arrangement of the evaporator is for easily discharging the defrost water generated in the evaporator downward, but the evaporator is disposed inclined to the rear, so that the thickness of the partition wall for arranging the heat insulating material and the evaporator may increase. When the thickness of the partition wall is increased, there may be a problem that the storage compartment of the refrigerator becomes relatively small.

Further, the lower surface of the partition wall is arranged to be inclined downward by the inclined arrangement of the evaporator, and correspondingly, the side portion of the drawer provided on the upper part of the freezing chamber is configured to be lowered toward the rear. In this case, there is a problem in that the storage property of the food is deteriorated.

In addition, according to the arrangement of the evaporator according to the prior art, since the fan is positioned immediately behind the evaporator, the defrost water generated in the evaporator flows into the fan, which may cause a malfunction of the fan. .

In addition, when high humidity cold air passes through the fan, condensed water may be generated in the fan. According to the prior art, a separate water flow path for discharging the condensed water from the fan is not provided, and the condensed water is configured to flow through a duct through which cold air is supplied. In this case, the duct may have a problem in that the condensed water is formed.

On the other hand, a tray for collecting defrost water needs to be provided at the lower side of the evaporator.According to the arrangement of the evaporator according to the prior art, the tray should be configured too close to the lower side of the evaporator in order to reduce the thickness of the partition wall as much as possible. do. In this case, defrosting water stored in the tray may be implanted, thereby deteriorating heat exchange performance of the evaporator.

An embodiment of the present invention has been proposed in order to improve the above problems, and an object of the present invention is to provide a refrigerator having an evaporator installation structure capable of increasing the internal storage space of the refrigerator.

Further, even if the evaporator is installed on the partition wall, an object thereof is to provide a refrigerator capable of relatively reducing the thickness of the partition wall.

In addition, an object of the present invention is to provide a refrigerator capable of improving the structure of the evaporator to facilitate the discharge of defrost water while performing heat exchange well, and to increase the height of the partition wall insulation material.

In addition, it is an object of the present invention to provide a refrigerator that prevents the evaporator or the defrosting water tray from being condensed, and in which defrost can be easily performed when condensed.

An evaporator of a refrigerator according to an embodiment of the present invention for achieving the above object includes an evaporator including a refrigerant pipe and a pin; A defrost water tray provided under the evaporator and storing condensed water generated in the evaporator; And a plurality of defrost heaters supplying heat to the evaporator or the defrost water tray.

The plurality of defrost heaters include a first defrost heater coupled to the evaporator.

The first defrost heater includes a tube-type cord heater.

The first defrost heater includes: a first heater extension part extending in a direction corresponding to an extension direction of the refrigerant pipe; And a second heater extension part extending from the first heater extension part and having a bent shape.

The pin includes a plurality of pins.

The plurality of fins may include first row fins arranged to be spaced apart from each other in the front-rear direction; And a second row of fins positioned at the side of the first row of fins and arranged to be spaced apart from each other in a front-rear direction.

The first heater extension may be located in a space between the first row fins and the second row fins.

A holder for supporting the evaporator is further included.

The holder includes a first holder supporting a front portion of the refrigerant pipe and a second holder supporting a rear portion of the refrigerant pipe.

A plurality of support protrusions provided on the first holder or the first holder are further included.

It is formed between the plurality of support protrusions, and includes a support space portion in which the first defrost heater is located.

It is installed inside the evaporator case, and further includes a supporter supporting the rear side of the evaporator.

The plurality of support protrusions may be supported on the inner surface of the supporter.

The evaporator further includes first and second heat exchange units which are disposed to be spaced apart from each other, and comprise the refrigerant pipe and fins.

A fan suction passage formed between the first and second heat exchange units and through which cold air passing through the first and second heat exchange units flows is further included.

An inlet pipe for guiding the inflow of the refrigerant into the refrigerant pipe of the evaporator; And an outlet pipe guiding the discharge of the refrigerant passing through the evaporator.

The refrigerant introduced into the evaporator through the inlet pipe may sequentially pass through the first and second heat exchange units, and may be discharged from the evaporator through the outlet pipe.

The first defrost heater is disposed only in the first heat exchange part among the first and second heat exchange parts.

In the evaporator,

A first branch pipe for branching the refrigerant flowing into the evaporator to the first and second heat exchange units; And a second branch pipe for laminating the refrigerant passing through each of the first and second heat exchange units to be discharged from the evaporator.

The first defrost heater may be disposed in each of the first and second heat exchange units.

The plurality of defrost heaters include a second defrost heater provided on a bottom surface of the defrost water tray.

The second defrost heater includes a heater of surface type having a plate or panel shape.

A tray insulating material provided below the defrost water tray is further included, and the second defrost heater is disposed between the defrost water tray and the tray insulating material.

The second defrost heater includes a heating element having a set pattern; An electrode terminal connected to the heating element; And an insulating layer surrounding the outer surface of the heating element.

In the evaporator case, a first cover covering an upper side of the evaporator; And a second cover supporting the lower side of the evaporator.

A heat insulating material insertion part formed in the second cover; And a cover insulating material installed in the heat insulating material insertion part to insulate the front space of the evaporator.

According to the refrigerator according to the embodiment of the present invention having the configuration as described above, the evaporator may be installed on one side of the partition wall partitioning the refrigerator compartment and the freezing compartment up and down, thereby increasing the internal storage space of the refrigerator, and a drawer provided in the refrigerator. The withdrawal distance of can be increased. Therefore, the storage property of food can be improved.

In addition, the evaporator includes a first heat exchange unit and a second heat exchange unit that are spaced apart from each other, and a fan suction flow path that is sucked into the blowing fan is formed between the first and second heat exchange units, so that cold air flowing from both sides of the partition wall There is an advantage that it can easily flow toward a fan located at the rear of the partition wall.

In addition, since the first and second heat exchange units are disposed to be inclined from the center toward the side from the evaporator, the heat exchange area of the evaporator can be increased, and the thickness of the insulating material positioned on the partition wall can be relatively large. .

In addition, the inlet pipe through which the refrigerant flows into the evaporator and the outflow pipe through which the refrigerant flows out are located at the center of the evaporator, and the cold air flows in from both sides of the evaporator. It can be placed away from the inlet of cold air. Accordingly, it is possible to prevent a phenomenon in which an implantation occurs at the inlet of the cold air, that is, both sides of the evaporator.

In addition, since a first heater is provided at one side of the evaporator to provide predetermined heat, the evaporator delays the occurrence of frost formation and can be quickly defrosted even if the formation occurs. In addition, since the first heater is composed of a tubular cord heater and is stably supported by the holder, defrosting of the evaporator can be effectively performed.

In addition, since the flow path of the refrigerant introduced into the evaporator is configured to pass through the first and second heat exchange units in sequence, the temperature of the refrigerant in the subordinate heat exchange unit through which the refrigerant passes later is formed relatively high. There will be. Accordingly, there is an effect that the defrost heater does not need to be disposed in the subordinate heat exchange unit.

In another embodiment, the flow path of the refrigerant introduced into the evaporator is configured to be branched into the first and second heat exchange units, so that the refrigerant can be heat-exchanged in the first and second heat exchange units, respectively, so that the refrigerant of a relatively high temperature flows through the secondary heat exchange There is an advantage in that it is possible to prevent a decrease in heat exchange efficiency in the part.

In addition, since a first heater is provided in each of the first and second heat exchange units to provide predetermined heat to the evaporator, there is an effect of delaying the occurrence of frost formation of the evaporator and rapid defrosting even if the frost formation occurs.

In addition, a defrost water tray is provided at the lower side of the evaporator, and the defrost water tray is disposed to be inclined downward from both sides toward the center according to the shape of the evaporator, so that the defrost water can flow smoothly.

In addition, since a second heater is provided on one side of the defrost water tray to provide predetermined heat to the defrost water tray, there is an effect that the defrosting of the defrosting water tray can be delayed and defrosting can be quickly performed even if an implantation occurs. appear.

In addition, the second heater is composed of a surface heater and is provided on the bottom of the defrost water tray, so that the defrost water flowing through the upper surface of the defrost water tray is not disturbed by the second heater, the discharge of the defrost water is prevented. It can be easier. In addition, since the defrost water does not act on the surface of the second heater, it is possible to prevent a phenomenon in which the second heater is corroded or malfunctioned by the defrost water.

1 is a front view showing the configuration of a refrigerator according to a first embodiment of the present invention.
2 is a front view showing an open state of a refrigerator door according to the first embodiment of the present invention.
3 is a view showing an inner case and a cold air supply device provided in the refrigerator according to the first embodiment of the present invention.
4 is a view showing the configuration of a cold air supply device according to the first embodiment of the present invention.
5 is a diagram showing a configuration of a cold air generator in a cold air supply device according to a first embodiment of the present invention.
6 is an exploded perspective view showing the configuration of the cold air generator.
7 is a view showing the configuration of a flow supply unit in the cold air supply device according to the first embodiment of the present invention.
8 is an exploded perspective view showing the configuration of the flow supply unit.
9 is a view showing the internal configuration of the cold air supply device according to the first embodiment of the present invention.
10 is a view showing the configuration of an evaporator according to the first embodiment of the present invention.
11 is a cross-sectional view showing the configuration of an evaporator and a defrost tray according to a first embodiment of the present invention.
12 is a view showing the configuration of a holder and a supporter for supporting an evaporator according to the first embodiment of the present invention.
13 is a schematic diagram showing a flow of a refrigerant in the evaporator according to the first embodiment of the present invention.
14 is a view showing the configuration of a second heater according to the first embodiment of the present invention.
15 is a view showing the flow of cold air passing through the evaporator according to the first embodiment of the present invention.
16 and 17 are views showing a state in which cold air cooled by an evaporator according to a first embodiment of the present invention is supplied to a storage chamber.
18 is a view showing a state in which defrost water generated in the evaporator according to the first embodiment of the present invention is discharged.
19 is a view showing a configuration of an evaporator and a flow of a refrigerant according to a second embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, the spirit of the present invention is not limited to the presented embodiments, and those skilled in the art who understand the spirit of the present invention will be able to easily propose other embodiments within the scope of the same idea.

1 is a front view showing the configuration of a refrigerator according to a first embodiment of the present invention, FIG. 2 is a front view showing a refrigerator door opened according to the first embodiment of the present invention, and FIG. 3 is a first embodiment of the present invention. 1 is a view showing an inner case and a cold air supply device provided in a refrigerator according to an embodiment.

1 to 3, in the refrigerator 10 according to the first embodiment of the present invention, a cabinet 11 having a storage compartment therein and a cabinet 11 provided in front of the cabinet 11 to selectively select the storage compartment. Doors 21 and 22 that open and close may be included.

The cabinet 11 may have a rectangular parallelepiped shape with an open front surface. Further, the cabinet 11 may include an outer case 60 forming the exterior of the refrigerator and an inner case 70 coupled to the inner side of the outer case 60 and forming an inner surface of the storage compartment. Although not shown, between the outer case 60 and the inner case 70, a cabinet insulating material 65 (refer to FIG. 18) for performing heat insulation between the outside of the refrigerator and the storage compartment may be provided.

The storage chamber includes first and second storage chambers 12 and 13 controlled at different temperatures. The first storage compartment 12 may include a refrigerating compartment 12, and the second storage compartment 13 may include a freezing compartment 13. For example, the refrigerating chamber 12 may be formed above the cabinet 11 and the freezing chamber 13 may be formed below the cabinet 11. That is, the refrigerating chamber 12 may be disposed above the freezing chamber 13. According to this configuration, since the refrigerator compartment 12, which is relatively frequently used for storage or withdrawal of food, can be disposed at the height of the user's waist, the user's convenience is increased because the user does not need to bend the waist when using the refrigerator compartment 12. Can be.

The refrigerator 10 further includes a partition wall 50 partitioning the refrigerating chamber 12 and the freezing chamber 13. The partition wall 50 may be provided inside the cabinet 11 and may extend from a front portion of the cabinet 11 toward a rear portion. For example, the partition wall 50 may extend rearward in a horizontal direction with respect to the ground from a front portion of the cabinet 11.

Since the temperatures formed in the refrigerating chamber 12 and the freezing chamber 13 are different from each other, the partition wall 50 is provided with a partition wall insulating material 55 for insulating the refrigerating chamber 12 and the freezing chamber 13. I can.

The doors 21 and 22 include a refrigerating compartment door 21 rotatably provided in front of the refrigerating compartment 12 and a freezing compartment door 22 rotatably provided in front of the freezing compartment 13. As another example, the freezing compartment door 22 may be configured as a drawer-type door provided to be pulled out forward.

A first handle 21a that can be gripped by a user may be provided on the front of the refrigerating compartment door 21, and a second handle 22a may be provided on the front of the freezing compartment door 22.

The refrigerator 10 further includes a shelf 31 provided in the storage compartment and capable of storing food. For example, the shelves 31 may be provided in the refrigerating chamber 12, and a plurality of shelves 31 may be provided to be spaced apart from each other in the vertical direction.

The refrigerator 10 further includes a drawer 35 provided so as to be pulled out from the storage compartment forward. The drawers 35 are provided in the refrigerating chamber 12 and the freezing chamber 13, respectively, and may form a food storage space therein. As the width of the storage chamber increases in the front-rear direction, the length of the drawer 35 in the front-rear direction may increase, and accordingly, the withdrawal distance of the drawer 35 may increase. When the withdrawal distance of the drawer 35 is increased, convenience for a user to store food may be increased. Therefore, it may be important from the viewpoint of user convenience to configure the refrigerator so that the width of the storage compartment in the front and rear direction is relatively large.

Define the direction.

A direction in which the drawer 35 is pulled out is defined as a front, and a direction in which it is received is defined as rear, and when looking at the refrigerator 10 from the front of the refrigerator 10, the left direction is left and the right direction is It is defined as The definition of this direction can be equally applied to the entire specification.

The refrigerator 10 may further include a display unit 25 that displays temperature information and operation state information of a storage compartment of the refrigerator. For example, the display unit 25 may be provided on the front surface of the refrigerating compartment door 21.

The inner case 70 includes a refrigerating compartment inner case 71 forming the refrigerating compartment 12. The refrigerating chamber inner case 71 is configured to have an open front portion, and may have a substantially rectangular parallelepiped shape.

The inner case 70 further includes a freezing chamber inner case 75 forming the freezing chamber 12. The freezing compartment inner case 75 is configured to have a front portion open, and may have a substantially rectangular parallelepiped shape. The freezing compartment inner case 75 may be disposed to be spaced apart from the lower side of the refrigerating compartment inner case 71. The refrigerating compartment inner case 71 may be referred to as a “first inner case”, and the freezing compartment inner case 75 may be referred to as a “second inner case”.

The partition wall 50 is disposed between the refrigerating chamber inner case 71 and the freezing chamber inner case 75. The partition wall 50 includes a partition wall front portion 51 forming a front exterior of the partition wall 50. When the doors 21 and 22 are opened, the partition wall front portion 51 is positioned between the refrigerating chamber 12 and the freezing chamber 13 and can be seen from the outside.

The partition wall 50 further includes a partition wall insulating material 55 provided at a rear side of the partition wall front portion 51 to insulate the refrigerating chamber 12 and the freezing chamber 13. The partition wall insulation 55 may be disposed between a bottom surface of the refrigerating chamber inner case 71 and an upper surface of the freezing chamber inner case 75. The partition wall 50 may be understood as a configuration including a bottom surface of the refrigerating chamber inner case 71, and an upper surface of the partition wall insulating material 55 and the freezing chamber inner case 75.

The refrigerator 10 further includes a cold air supply device 100 for supplying cold air to the refrigerating chamber 12 and the freezing chamber 13. The cold air supply device 100 may be disposed under the partition wall insulating material 55. In detail, the cold air supply device 100 may be installed on the inner upper surface of the freezing chamber inner case 75.

The cold air generated by the cold air supply device 100 may be supplied to the refrigerating chamber 12 and the freezing chamber 13, respectively. A refrigerating chamber cooling air duct 81 through which at least a portion of the cold air generated by the cooling air supply device 100 flows is provided at a rear portion of the refrigerating chamber 12. In addition, in the refrigerating compartment cooling air duct 81, a refrigerating compartment cold air supply unit 82 for supplying cold air to the refrigerating compartment 12 is formed. The refrigerating compartment cooling air duct 81 may form a rear wall of the refrigerating compartment 12, and the refrigerating compartment cooling air supply unit 82 may be formed on the front surface of the refrigerating compartment cooling air duct 81.

The cold air supply device 100 includes a freezing compartment cold air supply unit configured to supply at least a portion of the cold air generated by the cold air supply device 100 to the freezing compartment 13. A second supply unit 326 may be included in the freezing compartment cold air supply unit. In this regard, it will be described later with reference to the drawings.

A machine chamber 80 may be formed on the lower rear side of the freezing chamber inner case 75. In the machine room, a compressor and a condenser may be installed as components constituting a refrigeration cycle.

4 is a view showing the configuration of a cold air supply device according to the first embodiment of the present invention, Figure 5 is a view showing the configuration of a cold air generator in the cold air supply device according to the first embodiment of the present invention, Figure 6 Is an exploded perspective view showing the configuration of the cold air generator.

4 to 6, in the cold air supply device 100 according to the first embodiment of the present invention, a cold air generator 200 for generating cold air using evaporation heat of a refrigerant circulating in a refrigeration cycle and the cold air A flow supply unit 300 for supplying the cold air generated by the generation unit 200 to the storage chamber is included.

The cold air generator 200 includes an evaporator 220 in which the refrigerant is evaporated, a first cover 210 provided above the evaporator 220, and a second cover provided below the evaporator 220. (270) is included. The first cover 210 is coupled to the upper side of the second cover 270, and an internal space formed by the first and second covers 210 and 270 may define an installation space in which the evaporator 220 is installed. . In addition, the first and second covers 210 and 270 may be referred to as “evaporator case” accommodating the evaporator 220, and the installation space may be referred to as “evaporation chamber” or “heat exchange chamber”. The evaporator cases 210 and 270 are located on the bottom of the partition wall 50. The partition wall 50 may be provided to insulate the refrigerating chamber 12 from the heat exchange chamber.

The evaporator 220 includes a refrigerant pipe 221 through which a refrigerant flows, and a fin 223 coupled to the refrigerant pipe 221 to increase a heat exchange area of the refrigerant (see FIG. 9).

The first cover 220 constitutes at least a portion of the freezing chamber inner case 75. In detail, the first cover 220 may constitute an inner upper surface of the freezing compartment inner case 75. In other words, the first cover 22 is formed integrally with the freezing compartment inner case 75 and may be provided on the lower surface of the freezing compartment inner case 75.

In detail, the first cover 210 includes a first cover front portion 211 provided in front of the evaporator 220, and a first cover extending rearward from both sides of the first cover front portion 211 It includes a side portion 212 and a first cover upper surface portion 213 coupled to the upper portion of the first cover side portion 212 on both sides.

A recessed part 215 is included in the central part of the first cover upper surface part 213. The depression 215 may extend from a front portion to a rear portion of the first cover upper surface portion 213. The first cover upper surface portion 213 may extend upwardly inclined to both left and right sides from the recessed portion 215. This shape may correspond to a shape in which the evaporator 220 extends obliquely in the left and right directions.

The first cover side portion 212 includes a first duct coupling portion 217 to which the discharge duct 311 of the flow supply portion 300 to be described later is coupled. For example, the first duct coupling portions 217 may be formed on the first cover side portions 212 on both sides, respectively. That is, the first duct coupling portion 217 may be disposed on both side surfaces (left and right sides) of the first cover 210.

The cold air stored in the refrigerating chamber 12 is discharged through the discharge duct 311, and the discharged cold air passes through the first duct coupling part 217 and passes through the first cover 210 and the second cover ( It flows into the inner space formed by 270). In addition, the cold air may be cooled while passing through the evaporator 220.

The first cover 210 includes a second duct coupling portion 218 to which the first supply duct 380 of the flow supply unit 300 to be described later is coupled. At least some of the cold air generated by the evaporator 220 flows to the first supply duct 380 and may be supplied to the refrigerating chamber 12. The second duct coupling portion 218 may be provided on the first cover upper surface portion 213.

In the first cover 210, a pipe through part 216 through which the suction pipe 290 passes may be formed. The suction pipe 290 is a pipe that guides the refrigerant evaporated from the evaporator 220 to the compressor, is connected to the evaporator 220, passes through the pipe through part 216, and is disposed in the machine room 80 Can be extended to the old compressor. The pipe through part 216 may be formed in the recessed part 215.

The second cover 270 is configured to support the evaporator 220 and may be disposed in the freezing chamber 13. For example, the second cover 270 may be disposed under the freezing chamber inner case 75.

In detail, the second cover 270 includes a cover seating portion 273 disposed below the evaporator 220 and supporting the evaporator 220 or the defrost water tray 240. The cover seating portion 273 has a shape that is inclined downward from the left and right sides toward the center, corresponding to the inclined shape of the evaporator 220 and the inclined shape of the defrost water tray 240, that is, a shape that is recessed. I can.

The second cover 270 further includes a second cover front portion 271 provided in front of the cover seating portion 273. A through hole 271a (refer to FIG. 5) through which cold air stored in the freezing chamber 13 can pass may be formed in the second cover front portion 271. For example, the through hole 271a is formed on both sides of the second cover front part 271 and guides the cold air located in the front part of the freezing chamber 13 to easily flow into the cover discharge hole 275 do. By forming the through hole 271a, the flow resistance of cold air toward the cover discharge hole 275 may be reduced.

The second cover 270 further includes an insulating material insertion portion 271b on which the cover insulating material 235 is installed. The insulating material insertion portion 271b may be formed by penetrating the upper surface of the second cover front portion 271 (see FIG. 15 ).

The second cover 270 further includes second cover side portions 272 that are coupled to both sides of the second cover front portion 271 and extend rearward. Further, the second cover side portions 272 on both sides may be configured to be coupled to both sides of the cover seating portion 273 to extend upward. The first cover 210 may be coupled to an upper side of the second cover side portion 272.

A cover discharge hole 275 for guiding the cold air stored in the freezing chamber 13 to the evaporator 220 is formed in the second cover side portion 272. For example, the cover discharge hole 275 may include a plurality of holes, and the plurality of holes may be arranged from a front portion of the second cover side portion 272 toward the rear. The cold air of the freezing chamber 130 flows into the space formed by the first and second covers 210 and 270 through the cover discharge hole 275, and may be cooled while passing through the evaporator 220. The first duct coupling part 217 and the cover discharge hole 275 may be combined to be referred to as "inflow guide part".

The cold air generator 200 further includes a first heater 243 coupled to the evaporator 220 to supply a predetermined amount of heat to the evaporator 220. The first heater 243 is a heater that provides an amount of heat for melting ice when an ice formation occurs in the evaporator 220 and may be referred to as a “first defrost heater”. For example, the first heater 243 may be coupled to the upper portion of the evaporator 220.

The cold air generating unit 200 further includes evaporator support devices 231, 233, and 236 for supporting the evaporator 220. The evaporator support devices 231, 233, and 236 are located inside the evaporator cases 210 and 270. In addition, the evaporator support devices 231, 233, and 236 may include evaporator holders 231, 233 and a supporter 236.

The evaporator holders 231 and 233 include a first holder 231 supporting a front portion of the evaporator 220 and a second holder 233 supporting a rear portion of the evaporator 220. The first holder 231 may be supported by the defrost water tray 240, and the second holder 233 may be supported by the supporter 236.

The supporter 236 is supported by the second cover 270 and may be disposed behind the evaporator 220. Due to the configuration of the evaporator holders 231 and 233 and the supporter 236, the evaporator 220 may be stably supported inside the space formed by the first and second covers 210 and 270.

The cold air generating unit 200 further includes a defrost sensor 228 that senses a temperature around the evaporator 220 to determine a defrost start or end point of the evaporator 220. The defrost sensor 228 may be installed on the evaporator holders 231 and 233, for example, the second holder 233.

The cold air generator 200 further includes a fuse 229 for blocking current applied to the first heater 243. When the temperature of the evaporator 220 becomes higher than the set temperature, the fuse 229 is blown and the current supplied to the first heater 243 is blocked, thereby preventing a safety accident. The fuse 229 may be installed in the evaporator holders 231 and 233, for example, the second holder 233.

The cold air generating unit 220 further includes evaporator insulating materials 235 and 247 for performing heat insulation between a heat exchange region formed around the evaporator 220 and a space outside the evaporator 220. In detail, the evaporator insulators 235 and 247 include a cover insulator 235 disposed in front of the first holder 231 to insulate the front space of the evaporator 220.

The evaporator insulation materials 235 and 247 include a tray insulation material 247 supported by the second cover 270. In detail, the tray insulation 247 may be disposed under the defrost water tray 240 to insulate the lower space of the evaporator 220. The tray insulating material 247 is mounted on the cover mounting portion 273 of the second cover 270 and may be placed under the second heater 245. In particular, the tray insulation 247 may perform a function of preventing hot heat generated from the second heater 245 from acting on the freezing compartment 13.

The cold air generator 220 further includes a defrost water tray 240 disposed under the evaporator 220 and for collecting defrost water generated by the evaporator 220. The defrost water tray 240 may have a shape that corresponds to the shape of the evaporator 220 and is recessed from both sides thereof toward the center. Accordingly, the defrost water generated in the evaporator 220 is stored in the defrost water tray 240 and may flow to the central portion of the defrost water tray 240.

The distance between the defrost water tray 240 and the evaporator 220 may be formed larger than the distance between the evaporator 220 and the central portion of the defrost water tray 240 than at both sides thereof. . In other words, the distance between the defrost water tray 240 and the evaporator 220 may be formed to gradually increase from both sides of the evaporator 220 and the defrost water tray 240 toward the center. According to this configuration, even if the amount of defrost water flowing to the central portion of the defrost water tray 240 increases, the defrost water does not contact the surface of the evaporator 220, so that the evaporator 220 is formed Can be prevented.

The cold air generating unit 200 further includes a second heater 245 disposed under the defrost water tray 240 to supply a predetermined amount of heat to the defrost water tray 240. The second heater 245 is a heater that provides heat for melting ice when an implantation occurs in the defrost water tray 240 and may be referred to as a "second defrost heater." The second heater 245 may be disposed between the defrost water tray 240 and the tray insulation 247.

For example, the second heater 245 may include a planar heater having a plate or panel shape. Since the second heater 245 is provided on the bottom surface of the defrost water tray 240, the defrost water flowing through the upper surface of the defrost water tray 240 is not disturbed by the second heater 245. Discharge of defrost water can be facilitated. In addition, since the defrost water does not act on the surface of the second heater 245, it is possible to prevent a phenomenon in which the second heater 245 is corroded or malfunctioned by the defrost water.

The cold air generating unit 200 further includes a drain pipe 295 for discharging the defrost water collected in the defrost water tray 240 from the defrost water tray 240. The drain pipe 295 may be disposed behind the grill covers 320 and 330 to be described later. Further, the drain pipe 295 may be connected to the rear side of the defrost water tray 240 and extend downward to communicate with the machine room 80. Defrost water flows through the drain pipe 295 and flows into the machine room 80 and may be collected in a drain pan (not shown) provided in the machine room 80.

7 is a view showing a configuration of a flow supply unit in a cold air supply apparatus according to a first embodiment of the present invention, and FIG. 8 is an exploded perspective view showing the configuration of the flow supply unit.

7 and 8, the flow supply unit 300 according to the first embodiment of the present invention includes fan assemblies 350 and 355 for generating a flow of cold air. The fan assemblies 350 and 356 include a blowing fan 350. For example, the blowing fan 350 may include a centrifugal fan that inflows cool air from an axial direction and discharges it in a circumferential direction. Cold air flowing through a refrigerating compartment suction passage to be described later and cold air flowing through a freezing compartment suction passage may be combined and introduced into the blower fan 350.

In detail, the blowing fan 350 is coupled to a hub 351 to which a fan motor is coupled, a plurality of blades 352 arranged on the outer circumferential surface of the hub 351 and a front end of the plurality of blades 352 A bell-mouth 353 (bell-mouth) is included to guide the inflow of cold air into the blowing fan 350.

The blowing fan 350 may be installed in the inner space of the grill covers 320 and 330. In detail, the blowing fan 350 may be seated on the fan seating portion 332 provided in the grill covers 320 and 330. The fan seating part 332 may be provided on the second grill cover 330.

The fan assemblies 350 and 355 further include a fan support 355 coupled to the blowing fan 350 and supporting the blowing fan 350 on the grill covers 320 and 330. The fan support part 355 includes a cover support part 356 coupled to the support coupling part 332a of the fan seating part 332. A plurality of cover support portions 356 may be formed along the periphery of the fan support portion 355.

The flow supply unit 300 further includes grill covers 320 and 330 forming an installation space (hereinafter, a fan installation space) in which the fan assemblies 350 and 355 are installed. The grill covers 320 and 330 may be located at a rear portion of the freezing chamber 13, that is, a rear portion of the freezing chamber inner case 75.

In detail, the grill covers 320 and 330 include a first grill cover 320 and a second grill cover 330 coupled to a rear side of the first grill cover 320. The installation space may be defined as an inner space formed by a combination of the first and second grill covers 320 and 330.

In detail, in the first grill cover 320, the cold air formed in the first grill cover body 321 and the first grill cover body 321 having a plate shape and heat-exchanged by the evaporator 220 is the blower fan. A fan suction unit 322 for guiding the flow to 350 is included. For example, the fan suction unit 322 is formed on the first grill cover body 321 and may have a substantially circular shape. Air passing through the evaporator 220 may be introduced into the fan installation space through the fan suction unit 322.

Outside of the fan suction unit 322, a condensate guide for guiding the condensed water generated around the fan suction unit 322, that is, the condensed water generated from the grill covers 320 and 330 or the blowing fan 350 downward. A portion 322a is provided. The condensed water guide part 322a may be provided on the front surface of the first grill cover body 321. For example, the condensed water guide part 322a may extend round downward from both sides of the fan suction part 322. In addition, the lower end of the condensed water guide part 322a may be connected to the first cover insertion part 323.

The first grill cover body 321 further includes a first cover insertion part 323 into which the second cover 270 of the cold air generating part 200 or the defrost water tray 240 is inserted. In addition, the second grill cover 330 includes a second cover insertion part 333 into which the second cover 270 of the cold air generating part 200 or the defrost water tray 240 is inserted.

The second cover 270 or the defrost water tray 240 extends to the inner space of the grill covers 320 and 330 through the first cover insertion part 323 and the second cover insertion part 333. It extends to the rear side of the grill cover (320,330). In addition, the second cover 270 or the defrost water tray 240 is connected to the drain pipe 295, and the defrost water stored in the defrost water tray 240 may flow into the drain pipe 295. Yes (see Fig. 18).

The flow supply unit 300 further includes a sub cover 340 that shields at least a portion of the first cover insertion unit 323. For example, the sub-cover 340 shields the lower space of the first cover insertion part 323, and the second cover 270 or the defrost water tray 240 is the first cover insertion part 323 Can be inserted into the upper space of. Briefly explaining the assembly process, after the second cover 270 and the defrost water tray 240 are inserted into the first cover insertion portion 323, the sub-cover 340 is the first cover insertion portion ( 323).

A coupling hole 344 is formed in the sub cover 340. The coupling hole 344 may be coupled to the sub-cover coupling portion 334 of the second grill cover 330 by a predetermined fastening member. In this case, the fastening member may pass through the first fastening hole 321a of the first grill cover 320 and be coupled to the sub-cover coupling part 334. The first fastening hole 321a may be located under the first cover insertion part 323.

The first grill cover 320 includes a plurality of cold air supply units 325 and 326 for discharging the cold air passing through the blowing fan 350 to the freezing chamber 13.

In detail, the plurality of cold air supply units 325 and 326 includes a first supply unit 325 formed on the first grill cover body 321. The first supply unit 325 may be provided in plural and disposed on both sides of the fan suction unit 322, and may be positioned above the first cover insertion unit 323. The first supply unit 325 may supply cold air toward the upper space of the freezing chamber 13.

For example, the first supply unit 325 may supply cool air toward the lower surface of the cool air generating unit 200, that is, toward the lower surface of the second cover 270. Condensation may occur on the outer surface of the second cover 270 due to a difference between the inner temperature of the second cover 270 and the inner temperature of the freezing chamber 13. Such condensation may occur more when the freezing compartment door 22 is opened, and humid and hot air is introduced into the freezing compartment 13.

When the cold air supplied through the first supply unit 325 is directed toward the second cover 270, the dew is evaporated or the frost present in the second cover 270 can be removed. To this end, the first supply unit 325 is disposed at a position lower than the bottom surface of the second cover 270. In addition, the first supply unit 325 includes a supply guide unit 325a protruding forward from the first grill cover body 321 and disposed to be inclined upward.

The plurality of cold air supply units 325 and 326 includes a second supply unit 326 formed under the first grill cover body 321. The second supply part 326 may be positioned under the first cover insertion part 323 to supply cool air toward a central space or a lower space of the freezing chamber 13.

The second grill cover 330 may be coupled to the rear side of the first grill cover 320. The second grill cover 330 includes a second grill cover body 331 having a plate shape. The second grill cover body 331 includes a fan seating portion 332 having a support coupling portion 332a coupled to the fan support portion 355. The fan seating part 332 may be provided above the second grill cover 330 and may be disposed at a position corresponding to the fan suction part 322 of the first grill cover 320.

The second grill cover 330 further includes a protrusion 337 protruding forward from the second grill cover body 331. The protrusion 337 may support the rear surface of the first grill cover 320 and may be disposed to surround the second cover insertion part 333.

The upper surface of the protrusion 337 may function as a water collecting part collecting condensed water generated from the inside of the blowing fan 350 or the grill covers 320 and 330. In addition, a condensed water hole 338 for discharging condensed water generated from the blowing fan 350 downward is formed on the upper surface of the protrusion 337. Condensed water may be generated around the fan assemblies 350 and 355 while cold air flows through the blowing fan 350. In addition, the condensed water may be collected on the upper surface of the protrusion 337 and may fall into the defrost water tray 240 through the condensed water hole 338.

The condensate water hole 338 is located above the second cover insertion part 333, and the defrost water tray 240 can pass through the second cover insertion part 333, so the condensate water hole 338 The defrost water falling through) may be collected in the defrost water tray 240. According to this configuration, it is possible to easily discharge the condensed water generated from the fan assemblies 350 and 355.

The flow supply unit 300 includes a discharge duct 311 coupled to the evaporator cases 210 and 270 to guide the cold air stored in the refrigerating chamber 12 to the inside of the evaporator cases 210 and 270, that is, toward the evaporator 220. Includes more. The discharge duct 311 is coupled to the refrigerating chamber inner case 71 to extend downward, and is coupled to the evaporator cases 210 and 270.

In detail, an upper portion of the discharge duct 311 includes a discharge hole 312 communicating with the refrigerating compartment 12 and through which cold air from the refrigerating compartment 12 is introduced. A plurality of first grills 312a are provided in the discharge hole 312 to prevent foreign matter existing in the refrigerating chamber 12 from flowing into the discharge duct 311 through the discharge hole 312. have. The discharge hole 312 may be understood as a space formed between the plurality of first grills 312a.

In addition, an evaporator supply unit 313 coupled to the evaporator cases 210 and 270 to introduce cold air discharged from the refrigerating chamber 12 into the installation space of the evaporator 220 is included in the lower portion of the discharge duct 311. . For example, the evaporator supply part 313 may be coupled to the first duct coupling part 217 of the first cover 210.

The discharge duct 311 may be provided on both sides of the evaporator cases 2170 and 270. Accordingly, the cold air stored in the refrigerating compartment 12 is discharged to both sides of the refrigerating compartment inner case 71 and may be supplied into the evaporator cases 210 and 270 through the discharge duct 311. In addition, the supplied cold air may be cooled while passing through the evaporator 220.

The flow supply unit 300 further includes a first supply duct 380 through which at least some of the air that has passed through the blowing fan 350 flows. For example, the first supply duct 380 guides the flow of cold air to be supplied to the refrigerating chamber 12.

The grill covers 320 and 330 include a refrigerating compartment supply unit 339 communicating with the first supply duct 380. The refrigerating compartment supply unit 339 may be formed by combining the first grill cover 320 and the second grill cover 330.

In addition, the refrigerating compartment supply unit 339 may be disposed to be coupled to the second duct coupling unit 218 of the first cover 210. That is, the rear portion of the first cover 210 is coupled to the upper side of the grill covers 320 and 330, and the second duct coupling portion 218 and the refrigerating chamber supply portion 339 may be aligned vertically to communicate with each other. . Accordingly, the cold air that has passed through the blowing fan 350 passes through the refrigerating compartment supply unit 339 of the grill cover 320 and 330 and the second duct coupling unit 218 of the first cover 210 and the first supply duct ( 380).

A duct connection part 382 connected to the refrigerating compartment cooling air duct 81 is included in the upper part of the first supply duct 380. Therefore, the cold air flowing through the first supply duct 380 may flow upwardly by being introduced into the refrigerating compartment cooling air duct 81, and may be supplied to the refrigerating compartment 12 through the cold air discharge unit 82. have.

The flow supply unit 300 further includes a second supply duct 385 coupled to the lower side of the grill covers 320 and 330 and through which at least some of the cold air that has passed through the blowing fan 350 flows. For example, the second supply duct 385 guides the flow of cold air to be supplied to the freezing chamber 13. In addition, a third supply part 326 for discharging cold air to the freezing chamber 13 is formed under the second supply duct 385.

In detail, some of the cold air that has passed through the blower fan 350 flows upward and is supplied to the refrigerating chamber 12 through the first supply duct 380. In addition, the remaining cold air flows to both sides of the blower fan 350, and some of the cold air is supplied to the upper space of the freezing chamber 13 through the plurality of first supply units 325.

The cold air not supplied through the first supply unit 325 further flows downward, and is supplied to the central space of the freezing chamber 13 through the second supply unit 326. In addition, the cold air not supplied through the second supply unit 326 further flows downward and flows into the second supply duct 385, and the lower space of the freezing chamber 13 through the third supply unit 385 Can be supplied as

9 is a view showing the internal configuration of the cold air supply device according to the first embodiment of the present invention, Figure 10 is a view showing the configuration of the evaporator according to the first embodiment of the present invention, Figure 11 is a first embodiment of the present invention 1 is a cross-sectional view showing the configuration of an evaporator and a defrost tray according to the first embodiment, and FIG. 12 is a view showing the configuration of a holder and a supporter supporting the evaporator according to the first embodiment of the present invention.

9 to 12, the cold air supply device 100 according to the first embodiment of the present invention includes an evaporator 220 installed inside the evaporator cases 210 and 270.

In detail, the evaporator 220 includes a refrigerant pipe 221 through which a refrigerant flows and a pin 223 coupled to the refrigerant pipe 221. For example, the refrigerant pipes 221 have a shape bent a plurality of times, extend in a horizontal direction, and may be arranged in two rows in the vertical direction. With this configuration, the flow distance of the refrigerant is increased, so that the amount of heat exchange can be increased.

The fins 223 extend in the vertical direction and are coupled to the two rows of refrigerant pipes 221, and guide the flow of cold air to promote heat exchange between the cold and the refrigerant. By the configuration of the refrigerant pipe 221 and the fin 223, heat exchange performance of the refrigerant may be improved.

The cold air supply device 100 is connected to an inlet of the refrigerant pipe 221 and is connected to an inlet pipe 222a for introducing a refrigerant into the refrigerant pipe 221 and an outlet of the refrigerant pipe 221 An outlet pipe 222b through which the refrigerant circulating through the refrigerant pipe 221 is discharged is included. The inlet pipe 222a and the outlet pipe 222b may be disposed in the center of the evaporator 220. In addition, a gas-liquid separator 260 may be installed at the outlet side of the outlet pipe 222b to separate the gaseous refrigerant from the refrigerant passing through the evaporator 220 and supply it to the suction pipe 290. The gas-liquid separator 260 may be installed in the fan suction passage 227. By the arrangement of the gas-liquid separator 260, the gas-liquid separator 260 may be disposed at a relatively low position, and accordingly, the vertical height of the cold air supply device 100 may be reduced (see FIG. 15).

For example, the refrigerant introduced into the lower row of the refrigerant pipe 221 of the evaporator 220 through the inlet pipe 222a flows to the left (or right), and then flows to the upper row, and the evaporator 220 It flows in the right (or left) direction toward the right side of. In addition, the refrigerant flows into the lower heat of the refrigerant pipe 221 and flows toward the central portion of the evaporator 220, and may be discharged through the outlet pipe 222b.

A plurality of pins 223 are provided. The plurality of pins 223 may be disposed to be spaced apart in the front-rear direction. In addition, at least some of the pins 233 among the plurality of pins 223 may extend in a horizontal direction or a horizontal direction. The pin 233 constituting this arrangement may be referred to as a “guide pin”. The guide pin may extend in a direction from the side portions 220a and 220b of the evaporator 220 toward the central portion 220c to guide the flow of cold air in the side portion.

According to this configuration, when the cold air introduced from both sides of the evaporator 220 flows to the central portion 220c of the evaporator 220, the plurality of pins 223, in particular, can easily flow along the guide pin. I can. That is, a phenomenon in which the fins 223 obstruct the flow of cold air can be prevented.

The evaporator 220 includes side portions 220a and 220b forming both side portions of the evaporator 220 and a central portion 220c forming a middle portion of the evaporator 220. In detail, the side portions 220a and 220b include a plurality of heat exchange portions 220a and 220b. Further, the central part 220c includes a fan suction passage 227 formed between the plurality of heat exchange parts 220a and 220b and forming a suction side passage of the blowing fan 350.

The plurality of heat exchange parts 220a and 220b may include a first heat exchange part 220a and a second heat exchange part 220b. In addition, the fan suction passage 227 may be understood as a cold air passage in which the refrigerant pipe 221 and the pin 223 are not provided. With this configuration, the cool air cooled while passing through the first and second heat exchange units 220a and 220b is joined in the fan suction passage 227 and may flow toward the blowing fan 350.

Each of the first and second heat exchange units 220a and 220b may include the refrigerant pipe 221 and the fin 223. The refrigerant pipe 221 includes a connection part 221a connecting the first and second heat exchange parts 220a and 220b. The connection part 221a may be formed of a curved pipe, for example, a U-shaped pipe.

The connection part 221a is disposed at a front portion of the evaporator 220 and may be supported by the first holder 231. The first holder 231 may include a connection support portion 231a that supports the connection portion 221a. The connection support part 231a is formed by recessing at least a portion of the first holder 231, and may be fitted to the connection support part 231a in the recessed part.

The cold air supply device 100 includes a first holder 231 supporting a front portion of the evaporator 100 and a second holder 233 supporting a rear portion of the evaporator 100. The first holder 231 or the second holder 233 includes through-holes 234b and 234c through which the refrigerant pipe 221 is supported.

12, in the second holder 233, a holder body 234a having a plate shape and extending in a horizontal direction, and a plurality of through holes formed by penetrating at least a portion of the holder body 234a (234b, 234c) may be included.

In the plurality of through-holes 234b and 234c, a plurality of first through-holes 234b into which the first bending pipe 221b of the refrigerant pipe 221 is inserted, and a second bending pipe among the refrigerant pipe 221 A second through hole 234c into which the 221c is inserted is included. The plurality of first through-holes 234b may be arranged in two rows at the upper and lower portions of the holder body 234a, and may be spaced apart in a horizontal direction and a plurality of them may be arranged.

The first bending pipe 221b is a pipe provided at the rear portion of the refrigerant pipe 221 so that the flow direction of the refrigerant flowing through the refrigerant pipe 221 is switched from front to rear or rear to front Is understood as. The first through hole 234b may extend in a horizontal direction.

In addition, the second bending pipe 221c is provided on the side of the refrigerant pipe 221 so that the flow direction of the refrigerant flowing through the refrigerant pipe 221 is changed from the lower row of the refrigerant pipe to the upper row. It is understood as piping. The second through hole 234c may extend in a vertical direction.

The second holder 233 is coupled to the supporter 236. The supporter 236 is coupled to the second holder 233 and may be positioned in front of the fan suction unit 322 of the grill covers 320 and 330.

The evaporator 220 is coupled to an upper portion of the refrigerant pipe 221 and provides a predetermined amount of heat to the evaporator 220 at the time of defrosting the refrigerant pipe 221 or the pin 223. A first heater 243 capable of melting ice implanted in) is further included.

The first heater 243 may have a tube shape and may be referred to as an L-cord heater. In detail, the first heater 243 is bent and extended from the first heater extension 243a and the first heater extension 243a extending in the front-rear direction corresponding to the extension direction of the refrigerant pipe 221 A second heater extension portion 243b is included.

The first heater extension 243a may be disposed above or below the refrigerant pipe 221 and may be positioned between a plurality of fins 223 arranged in a horizontal direction. That is, the first heater extension 243a may be located in a space between the first row fins 223a and the second row fins 223b. The first row fins 223a are a plurality of fins arranged spaced apart from each other in the front and rear direction to form a first row, and the second row fins 223b are disposed on the side of the first row fins 223 and It can be understood that it is a plurality of fins arranged spaced apart in a direction to form a second row.

For example, an upper portion of the first row fins 223a and an upper portion of the second row fins 223b have a concave shape upward, and accordingly, the upper portion of the first row fins 223a and the first row fins 223a A predetermined space may be formed between the upper portions of the second row fins 223b. The first heater extension 243a may be located in the predetermined space. With this configuration, when the first heater 243 generates heat, a predetermined heat can easily act on the plurality of fins 223.

A plurality of first heater extension parts 243a are provided, and the plurality of first heater extension parts 243a are spaced apart in a horizontal direction and may be configured to extend in the front and rear directions. In addition, the plurality of first heater extension parts 243a may be connected by the second heater extension part 243b.

The second heater extension 243b may be bent from the first heater extension 243a to have a U shape. In addition, the second heater extension part 243b may be connected to a front part and a rear part of the first heater extension part 243a, respectively. In detail, some of the second heater extension 243b protrudes forward from the front part of the first heater extension 243a and bends, and may be connected to the front part of the nearest first heater extension 243a. . In addition, the other part of the second heater extension 243b is bent to protrude rearward from the rear portion of the first heater extension 243a, and may be connected to the rear portion of the nearest first heater extension 243a. have.

In addition, the front and rear portions of the first heater extension 243a may be supported by the holders 231 and 233. That is, a front portion of the first heater extension 243a may be supported by the first holder 231, and a rear portion of the first heater extension portion 243a may be supported by the second holder 233.

Each of the first holder 231 and the second holder 233 is provided with a support protrusion 234d for supporting the first heater 243. The support protrusion (234d) is provided with a plurality, between the plurality of support protrusions (234d), a support space portion (234e) that can be supported by the front or rear portion of the first heater extension (243a) Is formed. With this configuration, both sides of the first heater 243 may be stably supported by the first and second holders 231 and 233. In addition, the second heater extension 243b may be disposed to protrude to the front of the first holder 231 and the rear of the second holder 233.

The support protrusion 234d may be provided at an edge portion of the holder body 234a and may be supported on an inner surface of the supporter 236. That is, while the first heater 243 is supported by the support space part 234e, the support protrusion 234d is supported on the inner surface of the supporter 236, so that the first heater 243 is stable. Can be fixed as

In addition, the support protrusions 234d are provided on the upper and lower sides of the first through hole 234b, respectively, and perform a function of reducing the contact area between the supporter 236 and the second holder 233. With the configuration of the support protrusion 234d, the stress transmitted from the supporter 236 to the refrigerant pipe 221 through the second holder 233 may be reduced.

Although the configuration of the holder has been described based on the second holder 233, the holder body 234a, the first through hole 234b, and the support protrusion 234d provided in the second holder 233 1 The same can be applied to the holder 231.

The second holder 233 further includes a depression 233a communicating with the fan suction passage 227 and guiding the cold air passing through the evaporator 220 to flow toward the blowing fan 350. Included.

In detail, the recessed portion 233a is formed at an approximately central portion of the holder body 234a, and may be configured to be recessed downward from the upper surface of the holder body 234a. In addition, the depression 233a may be disposed in front of the fan suction unit 322 of the grill covers 320 and 330. The cold air cooled in the evaporator 220 may be introduced into the fan suction part 322 via the fan suction passage 227 and the depression 233a.

The first heat exchange part 220a and the second heat exchange part 220b may extend laterally from the central part of the evaporator 200 in a direction crossing each other. In other words, the first heat exchange part 220a and the second heat exchange part 220b may be arranged to be inclined upward toward the side based on the fan suction passage 227. That is, when defining the central portion of the fan suction passage 227 as C3, and defining a center line (ℓ2, ℓ3) passing through the vertical center of the first and second heat exchange units 220a from the C3, the central portion ( C3) and the center line (ℓ2,ℓ3) may have a V shape or a wedge shape.

In detail, when two rows of refrigerant pipes 221 and fins 223 provided in the first heat exchange part 220a are referred to as the first center line (ℓ2), the center of the upper and lower longitudinal directions and the line passing through the center (C3), The first center line ℓ2 extends upwardly inclined toward the left from the center C3. That is, the first center line ℓ2 may extend to form a first preset angle θ1 with respect to the horizontal line ℓ1. For example, the first set angle θ1 may form a range of 5 to 10°.

When two rows of refrigerant pipes 221 and fins 223 provided in the second heat exchange part 220b in the vertical direction and the line passing through the center C3 are referred to as a second center line (L3), the first 2 The center line L3 extends inclined upward from the center C3 to the right. That is, the second center line ℓ3 may extend to form the first set angle θ1 with respect to the horizontal line ℓ1.

According to the configuration of the evaporator 220, since the upper and lower widths of the cold air supply device 100 can be relatively reduced, the storage space of the freezing chamber 13 can be relatively increased. In addition, since the upper and lower widths of the cold air supply device 100 are not large, there is an effect that the thickness of the partition wall insulating material 55 positioned on the partition wall 50 can be relatively large. As a result, while the thickness of the partition wall insulating material 55 is relatively increased, there is an advantage that the total thickness of the partition wall 50 and the cold air supply device 100 can be relatively reduced.

In addition, compared to the evaporators arranged horizontally in the horizontal direction, heat exchange performance may be improved by relatively increasing the heat exchange area of the evaporator 220.

By the configuration in which the evaporator 220 is inclined in a V shape, the first and second holders 231 and 233 supporting the front and rear portions of the evaporator 220 are also configured to be inclined upward from the central portion toward both sides. I can.

A defrost water tray 240 for collecting defrost water generated from the evaporator 220 is installed below the evaporator 220. The defrost water tray 240 is spaced downward from the lower end of the evaporator 220 and stores defrost water falling from the evaporator 220.

The lower surface of the defrost water tray 240 may extend inclined upward with respect to the horizontal line ℓ1 toward the right or left from the center of the defrost water tray 240. That is, the lower surface of the defrost water tray 240 may extend to form a second preset angle θ2 with respect to the horizontal line ℓ1. The second set angle θ2 may be formed to be slightly larger than the first set angle θ1. For example, the second setting angle θ2 may form a range of 10 to 15°.

In detail, the defrost water tray 240 includes a flow guide portion 244 that extends obliquely downward from both sides of the defrost water tray 240 toward the center thereof. That is, the flow guide part 244 may be provided in plural on both sides of the defrost water tray 240.

The downwardly inclined shape of the flow guide part 244 corresponds to the inclined shape of the evaporator 220, whereby the defrosted water dropped into the defrosting water tray 240 is along the flow guide part 244 , It may flow in the direction of the central portion of the defrost water tray 240. The flow guide part 244 may extend to form the second set angle θ2 with respect to the horizontal line ℓ1.

The distance from the lower end of the evaporator 220 to the flow guide part 244 may be formed to increase gradually from both sides of the defrost water tray 240 to the center thereof. According to this configuration, even if the amount of defrost water flows along the flow guide portion 244 toward the center of the defrost water tray 240 and increases, it can be easily flowed without being interfered with the evaporator 220. There will be.

The defrost water tray 240 further includes a defrost water storage unit 245 configured to be recessed downward from the flow guide portions 244 on both sides. The defrost water storage unit 245 may be formed under the fan suction passage 227.

An angle that is depressed from the flow guide part 244 to the defrost water storage part 245, that is, inclined downwardly, may be formed larger than an angle inclined downward of the flow guide part 244. In this way, by having a shape in which the defrost water storage unit 245 is recessed downward, the discharge rate of the defrost water flowing along the flow guide units 244 on both sides can be increased, and accordingly, the defrost water is discharged. This can be facilitated.

The defrost water tray 240 may extend downwardly inclined toward a rear portion from a front portion thereof. The rear portion of the defrost water tray 240 extends rearward through the cover insertion portions 323 and 333 of the grill covers 320 and 330 and may be connected to the drain pipe 295. With this configuration, the defrost water stored in the defrost water storage unit 245 flows from the front portion to the rear portion of the defrost water tray 240 and can be easily discharged to the drain pipe 295.

13 is a view showing a state in which a refrigerant enters and exits the evaporator according to the first embodiment of the present invention.

10 and 13 together, in the refrigerator according to the first embodiment of the present invention, an inlet pipe 222a and the refrigerant pipe 221 for introducing a refrigerant into the refrigerant pipe 221 of the evaporator 220 ) And an outlet pipe (222b) for discharging the refrigerant passing through the evaporator 220 from the evaporator 220.

The inlet pipe 222a and the outlet pipe 222b may be located in the central portion of the evaporator 220, that is, in the fan suction passage 227. In the fan suction passage 227, the refrigerant pipe 221 and the pin 223 are not disposed, and a space for installation of the inlet pipe 222a and the outlet pipe 222b may be secured. In addition, a space for installing the gas-liquid separator 260 and the suction pipe 290 may be secured in the fan suction passage 227.

In addition, the inlet pipe 222a and the outlet pipe 222b are disposed in the front part of the fan suction passage 227, and a refrigerant pipe 221 supported by the first holder 231, especially a first bending pipe It can be connected to (221b).

The refrigerant flowing into the evaporator 220 may be discharged from the evaporator 220 after passing through the first and second heat exchange units 220a and 220b spaced apart from each other in order. For example, when the evaporator 220 is viewed directly from the front, the first heat exchange part 220a constitutes the right side of the evaporator 220, and extends upwardly inclined toward the right from the central part of the evaporator 220 do. In addition, the first heat exchange part 220a constitutes a left side of the evaporator 220 and extends upwardly inclined toward the left from the central part of the evaporator 220.

In detail, the inlet pipe 222a is connected to a refrigerant pipe 221 provided in any one of the first and second heat exchange units 220a and 220b to introduce a refrigerant into the refrigerant pipe 221. . As an example, as disclosed in the drawing, the inlet pipe 222a may be connected to the refrigerant pipe 221 of the first heat exchange part 220a.

The refrigerant pipes 221 of the first and second heat exchange units 220a and 220b may be arranged in upper and lower rows. In addition, the inflow pipe 222a may be connected to a refrigerant pipe 221 provided in a lower row (first row) of the refrigerant pipes 221 arranged in upper and lower rows.

The refrigerant pipe 221 of the first heat exchange part 220a guides the circulation of the refrigerant introduced into the central part of the evaporator 220 through the inflow pipe 222a. First, the refrigerant pipe 221 guides the refrigerant to the outer side of the first heat exchange part 220a. When the refrigerant reaches the outermost refrigerant pipe 221 of the first heat exchange part 220a, it can flow from the rear of the refrigerant pipe 221 to the refrigerant pipe 221 provided in the upper row (second row). have.

The refrigerant flowing through the refrigerant pipe 221 of the upper row flows to the central portion of the evaporator 220 and flows into the second heat exchange unit 220b through a connection portion 221a located in the front portion of the evaporator 220. . The connection part 221a may extend from the first heat exchange part 220a to the second heat exchange part 220b passing through the front of the fan suction passage 227.

The refrigerant pipe 221 of the second heat exchange part 220b guides the circulation of the refrigerant introduced through the connection part 221a. First, the refrigerant pipe 221 guides the refrigerant to the outer side of the second heat exchange part 220b. When the refrigerant reaches the outermost refrigerant pipe 221 of the second heat exchange part 220b, it can flow from the front of the refrigerant pipe 221 to the refrigerant pipe 221 provided in the lower row (first row). have.

The refrigerant flowing through the refrigerant pipe 221 of the lower row flows to the central portion of the second heat exchange part 220b, and may be discharged to the second heat exchange part 220b through the outlet pipe 222b. The outlet pipe 222b may be connected to a refrigerant pipe 221 provided in a lower row of the second heat exchange part 220b, in particular, a first bending pipe 221b.

In this way, the refrigerant flows from the central portion of the evaporator 220 to one side, then flows to the other side of the evaporator 220, and flows back to the central portion of the evaporator 220, while converting the entire area of the evaporator 220 to the heat exchange area Can be used.

In addition, a relatively large amount of liquid refrigerant is introduced into the inlet pipe 222a, and a relatively large amount of gaseous refrigerant is discharged into the outlet pipe 222b. The inlet pipe 222a is one of the two rows of refrigerant pipes 221 Since it is connected to the lower row and the outlet pipe 222b is connected to the lower row, there is an advantage that the refrigerant flows smoothly.

Meanwhile, since the refrigerant absorbs heat while passing through the evaporator 220, the temperature of the refrigerant introduced through the inflow pipe 222a is relatively low, and the temperature may gradually increase during the heat exchange process. In addition, the cold air is introduced from both sides of the evaporator 220 to exchange heat with the refrigerant in the refrigerant pipe 221.

As a result, the relatively cold refrigerant flows into the central portion of the evaporator 220 and the temperature of the refrigerant increases as it goes to both sides of the evaporator 220. Accordingly, the temperature difference between the refrigerant flowing at both sides of the evaporator 220 and the cold air flowing into both sides of the evaporator 220 is relatively small, thereby reducing the possibility of condensation and implantation on the surface of the evaporator 220 Can be prevented. If the refrigerant flows from the side of the evaporator 220, the temperature difference between the coolant and the refrigerant is relatively large, so that the possibility of condensation and condensation at both sides of the evaporator 220 increases.

A first heater 243 is coupled to an upper portion of the evaporator 220. As described above, when the refrigerant flows through the first and second heat exchange units 220a and 220b in sequence, the temperature of the refrigerant flowing through the second heat exchange unit 220a is the refrigerant flowing through the first heat exchange unit 220b. It may be formed somewhat higher than the temperature of. Accordingly, the possibility of implantation in the second heat exchange part 220b may be lower than that of the first heat exchange part 220a.

Due to this phenomenon, the first heater 243 may be coupled only to the first heat exchange part 220a (see FIGS. 9 and 10 ). According to this configuration, since a small number of the first heaters 243 can be disposed, there is an advantage in that power consumption by driving the heater can be reduced.

14 is a view showing the configuration of a second heater according to the first embodiment of the present invention.

Referring to FIG. 14, the second heater 245 according to the first embodiment of the present invention may have a plate-type shape. In addition, the second heater 245 may have an inclined surface corresponding to the inclined shape of the defrost water tray 240. As an example, the second heater 245 is configured to be flexible, and can be deformed in response to the inclined shape of the defrost water tray 240, and accordingly, stably disposed under the defrost water tray 240 Can be. The second heater 245 may be referred to as a “heater of surface type”.

The second heater 245 includes a heating element 245a provided by processing a metal thin film having a set thickness and having a set pattern. For example, the heating element 245a may have a zigzag continuous pattern.

The second heater 245 further includes first and second electrode terminals 245c and 245d to which the first and second fuses 245e and 245f are respectively connected. The first fuse 245e may be inserted into the first electrode terminal 245c, and the second fuse 245f may be inserted into the second electrode terminal 245d. Further, the first and second fuses 245e and 245f may be configured to connect the first and second electrode terminals 245c and 245d to the heating element 245a. When a short circuit occurs in the second heater 245 and an overcurrent flows, the first and second fuses 245e and 245f are disconnected between the first and second electrode terminals 245c and 245d and the heating element 245a. It can be acted to make it happen.

The second heater 245 further includes an insulating layer 245b surrounding an outer surface of the heating element 245a. The insulating layer 245b protects the heating element 245a from an external environment, and may perform moisture-proof, heat-resistant, and electrical insulation functions.

The second heater 245 is installed between the defrost water tray 240 and the tray insulation 247 to provide predetermined heat to the defrost water tray 240. When the second heater 245 heats up, ice implanted in the defrost water tray 240 may be melted. And, since the second heater 245 is disposed on the bottom of the defrost water tray 240, it does not interfere with the flow of the defrost water stored in the defrost water tray 240, and prevents corrosion or malfunction due to the defrost water. can do.

15 is a view showing the flow of cold air passing through the evaporator according to the first embodiment of the present invention, and FIGS. 16 and 17 are diagrams in which cold air cooled by the evaporator according to the first embodiment of the present invention is supplied to the storage chamber. Fig. 18 is a view showing a state in which defrost water generated in the evaporator according to the first embodiment of the present invention is discharged.

15 to 18, the cold air stored in the storage chambers 12 and 13 according to the first embodiment of the present invention may flow into the evaporation chamber in which the evaporator 220 is located through each suction passage. In detail, the cold air stored in the refrigerating chamber 12 flows into the evaporation chamber through the discharge duct 311 constituting the refrigerating chamber suction passage (dashed arrow). Then, the cold air stored in the freezing chamber 13 flows into the evaporation chamber through the cover discharge hole 275 constituting the freezing chamber suction passage (solid arrow).

As described above, the cover discharge hole 275 is located relatively in front of the discharge duct 311. Accordingly, the cold air of the freezing chamber flowing into the evaporation chamber through the cover discharge hole 275 may be heat-exchanged while flowing from the front portion to the rear portion of the evaporator 220. Therefore, the heat exchange area of the cold air in the freezing chamber is formed relatively large.

The cold air of the refrigerating chamber introduced into the evaporation chamber through the discharge duct 311 may be heat-exchanged while flowing from an approximately central portion of the evaporator 220 toward a rear portion. Accordingly, the heat exchange area of the cold air in the refrigerating compartment may be formed smaller than an area in which the cooling air in the freezing compartment is heat-exchanged. However, since the cooling load of the cold air in the refrigerating compartment is not larger than the cooling load of the cooling air in the freezing compartment, a sufficient cooling performance can be ensured even when the suction passage is disposed as described above.

Meanwhile, a plurality of fins 223 of the evaporator 220 may be spaced apart from the front portion of the evaporator 220 toward the rear portion, and thus a plurality of fins 223 may be disposed. That is, a plurality of fins 223 are provided to form a plurality of rows in the front and rear directions. In addition, the front surface of the fins 223 forming each row may be arranged to face the front. For example, front surfaces of the fins 223 forming a plurality of rows may extend parallel to each other in a horizontal direction. According to the arrangement of the fins 223, cold air from the side of the evaporator 220 toward the central portion of the evaporator 220, that is, the fan suction passage 227 may not be interfered with by the fins 223. As a result, the pin 223 can easily guide the flow of cold air.

The flow of cold air is made on both sides of the evaporator 220 through the first and second heat exchange units 220a and 220b. The cold air introduced from both sides passes through the refrigerant pipes 221 and pins 223, respectively, and then is joined in the fan suction passage 227 and flows backward.

In addition, the cold air of the fan suction passage 227 flows into the grill covers 320 and 330 through the fan suction unit 322 and passes through the blowing fan 350. In addition, at least some of the cold air that has passed through the blower fan 350 flows to the refrigerating chamber cold air duct 81 through the first supply duct 380, and to the refrigerating chamber 12 through the cold air discharge unit 82. Can be supplied (see Fig. 18A)

Among the cold air that has passed through the blower fan 350, the remaining cold air flows to the first and second supply units 325 and 326 or the second supply duct 385 and may be supplied to the freezing chamber 13 (see FIG. 18B). .

In the process of supplying cold air through the evaporator 220, condensed water or defrosted water f1 is generated in the evaporator 220, and the condensed water or defrosted water is a defrost water tray 240 provided at the lower side of the evaporator 220 Can fall into. Water collected in the defrost water tray 240 may flow toward the rear portion of the defrost water tray 240. As described above, since the defrost water tray 240 is inclined downward from its front portion toward the rear portion, the flow of the condensate or defrost water can be facilitated. The water flowing through the defrost water tray 240 is the water flowing through the defrost water tray 240. It is introduced into the drain pipe 295 through the grill covers 320 and 330.

In addition, the condensed water f2 generated from the blower fan 350 or the grill covers 320 and 330 falls into the defrost water tray 240 through the condensate water hole 338 and flows into the drain pipe 295. do. That is, the condensed water f1 and the condensed water f2 may be laminated in the defrost water tray 240 and flow into the drain pipe 295.

Water introduced into the drain pipe 295 flows downward and flows into the machine room 80 and may be collected in a drain pan (not shown) provided in the machine room 80. By such an action, it is possible to facilitate the discharge of defrost water.

Hereinafter, other embodiments will be described. Since these embodiments differ only in some of the configurations of the first embodiment, the differences will be mainly described, and the description and reference numerals of the first embodiment are used for the same parts as the first embodiment.

19 is a view showing a configuration of an evaporator and flow of a refrigerant according to a second embodiment of the present invention.

Referring to FIG. 19, in the evaporator 420 according to the second embodiment of the present invention, first and second heat exchange units 420a and 420b and the first and second heat exchange units 420a, which are disposed to be spaced apart from each other left and right, A fan suction passage 427 formed between 420b) and through which heat-exchanged cold air flows is included.

The first and second heat exchange units 420a and 420b each include a refrigerant pipe 421 and a fin 423 coupled to the refrigerant pipe 421. In addition, the refrigerant pipes 421 are arranged in two rows in the vertical direction. The front and rear portions of the refrigerant pipe 421 may be supported by the first and second holders 431 and 433.

The evaporator 420 includes an inlet pipe 422a for introducing a refrigerant into the evaporator 420 and an outlet pipe 422b for discharging the refrigerant passing through the evaporator 420 from the evaporator 420. .

The evaporator 420 further includes a first branch pipe 451 connected to the inlet pipe 422a and for branching the refrigerant into the first and second heat exchange units 420a and 420b. The first branch pipe 451 may include a T-shaped branch pipe having one inlet portion and two outlet portions. The refrigerant pipes 421 of the first and second heat exchange units 420a and 420b, especially the first bending pipe described in the first embodiment, may be connected to the two outlet portions of the first branch pipe 451, respectively. . In addition, the refrigerant pipe 421 connected to the first branch pipe 451 may be a refrigerant pipe 421 constituting a lower row.

In the evaporator 420, a second branch pipe that is connected to the outlet pipe 422b and guides the refrigerant that has passed through the first and second heat exchange units 420a and 420b to the outlet pipe 422b ( 455) is further included. The second branch pipe 455 may include a T-shaped branch pipe having two inlet portions and one outlet portion. The refrigerant pipes 421 of the first and second heat exchange units 420a and 420b, particularly the first bending pipe described in the first embodiment, may be connected to the two inlet portions of the second branch pipe 455, respectively. . In addition, the refrigerant pipe 421 connected to the second branch pipe 455 may be a refrigerant pipe 421 constituting an upper row.

The flow of refrigerant in the evaporator 420 according to the present embodiment will be described.

The refrigerant introduced into the evaporator 420 through the inlet pipe 422a is branched from the first branch pipe 451 to both sides, and among the refrigerant pipes 421 of the first and second heat exchange units 420a and 420b Each of them is introduced into the refrigerant pipes 421 constituting the lower row. In addition, the refrigerant flowing into the refrigerant pipe 421 of the lower row flows to the outer portions of the first and second heat exchange units 420a and 420b and flows into the refrigerant pipe 421 of the upper row.

The refrigerant flowing through the refrigerant pipe 421 of the upper row flows to each outer portion of the first and second heat exchange units 420a and 420b, and flows into the second branch pipe 455 to be laminated. The combined refrigerant may be discharged from the evaporator 420 through the outlet pipe 422b.

According to the configuration of the evaporator 420 and the flow of the refrigerant, the refrigerant introduced into the evaporator 420 is branched and flows to the first and second heat exchange units 420a and 420b, so that the heat exchange distance of the refrigerant can be shortened. Accordingly, it is possible to prevent overheating of the refrigerant in the evaporator 420. Consequently, it is possible to prevent the occurrence of cooling loss of cold air due to overheating of the refrigerant.

Meanwhile, since the temperature of the refrigerant flowing through the first and second heat exchange units 420a and 420b is relatively low, the possibility of implantation in the first and second heat exchange units 420a and 420b may be relatively high. . Accordingly, first heaters 443 may be provided above the first and second heat exchange units 420a and 420b, respectively.

A description of the detailed configuration of the first heater 443 and a description of the configuration supported by the first and second holders 431 and 433 are described with respect to the first embodiment (FIGS. 10 and 12). Won. According to the arrangement of the first heater 443, it is possible to delay the implantation in the first and second heat exchange units 420a and 420b and improve the defrosting performance.

10: refrigerator 12: refrigerator compartment
13: freezer 21, 22: door
50: bulkhead 60: bulkhead insulation
60: outer case 71,75: inner case
81: cold air duct in the refrigerator compartment 82: cold air discharge unit
100: cold air supply device 200: cold air generator
210: first cover 220: evaporator
220a: first heat exchange part 220b: second heat exchange part
221: refrigerant pipe 223: pin
231,233: holder 236: supporter
240: defrost water tray 243: first heater
245: second heater 270: second cover
272: second cover side 275: cover discharge hole
295: drain pipe 300: flow supply

Claims (20)

A cabinet including a refrigerating chamber and a freezing chamber disposed below the refrigerating chamber;
A partition wall provided between the refrigerating chamber and the freezing chamber and having a partition wall insulating material;
An evaporator case disposed in the freezing chamber and positioned on the bottom of the partition wall;
An evaporator installed inside the evaporator case and having a refrigerant pipe and a pin;
A defrost water tray provided under the evaporator and storing condensed water generated in the evaporator; And
A first defrost heater provided on an upper side of the evaporator and supplying heat to the evaporator or the defrost water tray; And
It is provided at the front or rear portion of the evaporator, and includes a holder for supporting the evaporator,
The holder,
A holder body forming a through hole into which the refrigerant pipe is inserted; And
A refrigerator including a support protrusion provided on the holder body to support the first defrost heater. delete The method of claim 1,
In the first defrost heater,
Refrigerator with tube-type cord heater. The method of claim 3,
In the first defrost heater,
A first heater extension part extending in a direction corresponding to an extension direction of the refrigerant pipe; And
A refrigerator including a second heater extension part extending from the first heater extension part and having a bent shape. The method of claim 4,
The pin includes a plurality of pins,
In the plurality of pins,
First row fins spaced apart from each other in the front-rear direction; And
A refrigerator including a second row of fins positioned at a side of the first row of fins and arranged to be spaced apart from each other in a front-rear direction. The method of claim 5,
The first heater extension unit,
A refrigerator positioned in a space between the first row fins and the second row fins. The method of claim 1,
In the holder,
A first holder supporting a front portion of the refrigerant pipe; And
A refrigerator including a second holder supporting a rear portion of the refrigerant pipe. The method of claim 7,
The support protrusion includes a plurality of support protrusions,
The first defrost heater is a refrigerator positioned in a support space portion formed between the plurality of support protrusions. The method of claim 8,
It is installed inside the evaporator case, further includes a supporter supporting the rear side of the evaporator,
The refrigerator, characterized in that the plurality of support protrusions are supported on the inner surface of the supporter. The method of claim 1,
In the evaporator,
First and second heat exchange units disposed to be spaced apart from each other and including the refrigerant pipe and fins; And
A refrigerator formed between the first and second heat exchange units and including a fan suction passage through which cold air passing through the first and second heat exchange units flows. The method of claim 10,
An inlet pipe guiding the inflow of refrigerant into the refrigerant pipe of the evaporator; And
An outlet pipe for guiding the discharge of the refrigerant passing through the evaporator is further included,
The refrigerant flowing into the evaporator through the inlet pipe sequentially passes through the first and second heat exchange units, and is discharged from the evaporator through the outlet pipe. The method of claim 11,
The first defrost heater,
Among the first and second heat exchange units, a refrigerator disposed only in the first heat exchange unit. The method of claim 10,
In the evaporator,
A first branch pipe for branching the refrigerant flowing into the evaporator to the first and second heat exchange units; And
A refrigerator further comprising a second branch pipe for laminating the refrigerant passing through each of the first and second heat exchange units to be discharged from the evaporator. The method of claim 13,
The first defrost heater,
Refrigerators disposed respectively in the first and second heat exchange units. The method of claim 1,
A refrigerator further comprising a second defrost heater provided on a bottom surface of the defrost water tray. The method of claim 15,
In the second defrost heater,
A refrigerator including a heater of surface type having a plate or panel shape. The method of claim 15,
A tray insulation material provided on the lower side of the defrost water tray is further included,
The second defrost heater is a refrigerator disposed between the defrost water tray and the tray insulation. The method of claim 16,
In the second defrost heater,
A heating element having a set pattern;
An electrode terminal connected to the heating element; And
Refrigerator further comprising an insulating layer surrounding the outer surface of the heating element. The method of claim 1,
In the evaporator case,
A first cover covering an upper side of the evaporator; And
A refrigerator further comprising a second cover supporting a lower side of the evaporator. The method of claim 19,
A heat insulating material insertion part formed in the second cover; And
A refrigerator that is installed in the heat insulating material insertion portion and includes a cover insulating material that insulates the front space of the evaporator.
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