Refrigerator and method of supplying water in refrigerator

1. A refrigerator, comprising:

a main body comprising a food storage space;

a door installed in the main body and configured to open and close the food storage space;

an ice-making device installed in the food storage space; and

feet to obliquely position the refrigerator on a floor surface at a predetermined angle with respect to the floor surface in a state in which a front end portion of the main body is positioned higher than a rear end portion thereof,

wherein the ice-making device comprises:

a case comprising a cooling space defined therein;

a cooling unit configured to cool the cooling space; and

an ice-making system located in the cooling space and configured to produce ice pieces, the ice-making system comprising an ice tray comprising:

a plurality of ice-making spaces for retaining water; and

a water supply unit configured to supply water to the ice-making spaces,

wherein the water supply unit comprises:

a feeder pipe configured to feed water to the ice-making system; and

a water supply pipe connected to the feeder pipe and disposed above the ice tray to extend along a length direction of the ice tray; and

a heater configured to heat the water supply pipe and the feeder pipe and that surrounds an outer circumference of the water supply pipe and an outer circumference of the feeder pipe;

the water supply pipe comprising a plurality of holes in the positions corresponding to the ice-making spaces wherein water is supplied to the respective ice-making spaces through the respective holes, wherein the diameters of the plurality of holes are larger as the holes are positioned farther away from the feeder pipe, and wherein the plurality of holes is formed on a lower surface of the water supply pipe in positions corresponding to the ice-making spaces.

2. The refrigerator of claim 1 further comprising a waterproof membrane configured to prevent the heater from making contact with water and disposed outside the heater to surround the heater, the outer circumference of the water supply pipe, and the outer circumference of the feeder pipe.

3. The refrigerator of claim 1 , wherein the water supply pipe extends along an entire length of the ice tray.

4. The refrigerator of claim 1 , wherein the water supply pipe is directly connected to the feeder pipe, wherein the water fed through the feeder pipe is moved along the length direction of the water supply pipe and flows through the holes of the water supply pipe into the ice-making spaces disposed below the water supply pipe, supplying uniform amounts of water to each of the ice-making spaces when the refrigerator is obliquely at an angle with respect to the floor surface.

5. A refrigerator, comprising:

a main body comprising a food storage space;

a door configured to open and close the food storage space;

an ice-making device comprising:

a case comprising a cooling space defined therein;

a cooling unit configured to cool the cooling space; and

an ice-making system disposed in the cooling space and configured to produce ice pieces, the ice-making system comprising an ice tray comprising:

a plurality of ice-making spaces for retaining water; and

a water supply unit configured to supply water to the ice-making spaces; and

feet to obliquely position the refrigerator on a floor surface at a predetermined angle with respect to the floor surface in a state in which a front end portion of the main body is positioned higher than a rear end portion thereof,

wherein the water supply unit comprises:

a first pipe configured to supply water to the ice-making system;

a second pipe connected to the first pipe and disposed above the ice tray to extend along a length direction of the ice tray;

a heater configured to heat the first pipe and the second pipe and that surrounds an outer circumference of the first pipe and an outer circumference of the second pipe; and

a plurality of holes formed in the second pipe in positions corresponding to the ice-making spaces wherein water is supplied to the ice-making spaces through the plurality of holes, wherein diameters of the plurality of holes are larger as the holes are positioned farther away from the first pipe, and wherein the plurality of holes is formed on a lower surface of the second pipe in positions corresponding to the ice-making spaces.

6. The refrigerator of claim 5 , further comprising a waterproof membrane configured to prevent the heater from making contact with water and disposed outside the heater to surround the heater, the outer circumference of the first pipe, and the outer circumference of the second pipe.

7. The refrigerator of claim 5 , wherein the second pipe extends along an entire length of the ice tray.

8. The refrigerator of claim 5 , wherein the second pipe is directly connected to the first pipe, wherein the water fed through the first pipe is moved along the length direction of the second pipe and flows through the holes of the second pipe into the ice-making spaces disposed below the water supply pipe, supplying uniform amounts of water to each of the ice-making spaces when the refrigerator is obliquely installed at an angle with respect to the floor surface.