Refrigerator

Patent metadata

Field	Value
Publication number	US-9109819-B2
Application number	US-201213483838-A
Country	US
Kind code	B2
Filing date	May 30, 2012
Priority date	May 31, 2011
Publication date	Aug 18, 2015
Grant date	Aug 18, 2015

Abstract

A refrigerator includes a main body in which a first storage compartment is defined, and a heat exchange chamber defined in the main body. An evaporator received in the heat exchange chamber. A second storage compartment is provided in the first storage compartment and a quick cooling module to cool an inside of the second storage compartment is provided, where the quick cooling module heat-exchanges with a refrigerant pipe of the evaporator. The quick cooling module includes a thermal conductive unit in thermal conduction with the refrigerant pipe, and a thermoelectric device having a first surface in thermal conduction with the thermal conductive unit to heat-exchange with the thermal conductive unit when current is supplied and a second surface facing the second storage compartment.

First claim

What is claimed is:

1. A refrigerator, comprising:
a main body in which a first storage compartment is defined;
a door opening or closing the first storage compartment;
a heat exchange chamber defined in the main body;
an evaporator disposed in the heat exchange chamber and including a refrigerant pipe;
a second storage compartment defined in the first storage compartment, the second storage compartment configured to be maintained at a temperature lower than the temperature of the first storage compartment and located on a front side of the heat exchange chamber;
a drawer assembly received in the second storage compartment;
a partition wall disposed between the second storage chamber and the heat exchange chamber, the partition wall including:
a cool air inflow hole allowing flow of air between the heat exchange chamber and the drawer assembly; and
a cool air discharge hole allowing flow of air between the drawer assembly and the heat exchange chamber;
a guide part disposed between the drawer assembly and the partition wall and having a cool air guide passage which allows flow of air between the cool air inflow hole of the partition and the drawer assembly;
a quick cooling module configured to rapidly cool the second storage compartment, the quick cooling module including:
a thermal conductive unit contacting the evaporator by surrounding at least a portion of the refrigerant pipe of the evaporator, in order to transfer heat to the evaporator;
a thermoelectric device including:
a heat emission surface contacting the thermal conductive unit, in order to transfer heat to the thermal conductive unit when current is supplied; and
a heat absorption surface which is opposite of the heat emission surface; and
a heat dissipation member contacting the heat absorption surface of the thermoelectric device, and disposed inside the cool air guide passage,
wherein air primarily cooled by the evaporator in the heat exchange chamber flows into the cool air guide passage through the cool air inflow hole of the partition wall,
the air flowing along the cool air guide passage is further cooled by the heat dissipation member and enters the drawer assembly,
and the air in the drawer assembly is configured to return to the heat exchange chamber through the cool air discharge hole of the partition wall.

2. The refrigerator of claim 1 , wherein the drawer assembly comprises:
a case disposed in the second storage compartment; and
a drawer capable of being drawn into and out of the case.

3. The refrigerator of claim 2 , further comprising:
a cool air inflow hole formed at a rear surface of the drawer; and
a cool air discharge hole formed at the rear surface of the drawer and a predetermined distance away from the cool air inflow hole of the drawer.

4. The refrigerator of claim 3 , wherein the cool air inflow hole of the drawer is positioned above the cool air discharge hole of the drawer.

5. The refrigerator of claim 4 , wherein an upper end of the cool air guide passage communicates with the cool air inflow hole of the partition wall, and a lower end of the cool air guide passage communicates with the cool air inflow hole of the drawer.

6. The refrigerator of claim 5 , wherein the cool air discharge hole of the drawer communicates with the cool air discharge hole of the partition wall.

7. The refrigerator of claim 6 , further comprising:
a cool air inflow duct disposed at the lower end of the cool air guide passage and communicating with the cool air inflow hole of the drawer to guide the further cooled air into the drawer; and
a cool air discharge duct disposed at the cool air discharge hole of the partition wall to return the cool air inside the drawer to the heat exchange chamber.

8. The refrigerator of claim 7 , wherein the guide part includes:
a guide rib protruding from a front surface of the partition wall facing the second storage compartment to define the cool air guide passage; and
a cover disposed on a front surface of the guide rib to cover the cool air guide passage,
wherein the cool air inflow hole of the partition wall is disposed at an upper end part of the cool air guide passage.

9. The refrigerator of claim 8 , wherein the cool air guide passage and the cover are formed in a vertical T-shape.

10. The refrigerator of claim 9 , wherein the partition wall further includes a module mounting hole through which the quick cooling module passes.

11. The refrigerator of claim 10 , further comprising a blow fan disposed in the cool air guide passage to blow air towards the cool air inflow duct.

12. The refrigerator of claim 1 , further comprising a plurality of cooling projections protruding from a bottom surface of the drawer.

13. The refrigerator of claim 12 , further comprising a cold plate placed on an upper end of the cooling projections.

Assignees

• Shin Jaehoon
• Kim Yanggyu
• Sul Heayoun
• Park Yongjoo
• Lg Electronics Inc

Inventors

• Shin Jaehoon
• Kim Yanggyu
• Sul Heayoun
• Park Yongjoo

Classifications

• F25D2317/061

  through special compartments · CPC title

• F25D17/065

  with compartments at different temperatures · CPC title

• F25B2321/0252

  by liquids or two-phase fluids · CPC title

• F25D11/025

  using primary and secondary refrigeration systems · CPC title

• F25D11/04

  specially adapted for storing deep-frozen articles (F25D11/02 takes precedence) · CPC title