Refrigerator having very low temperature freezer compartment

Patent metadata

Field	Value
Publication number	US-11313606-B2
Application number	US-202016927669-A
Country	US
Kind code	B2
Filing date	Jul 13, 2020
Priority date	Jan 4, 2017
Publication date	Apr 26, 2022
Grant date	Apr 26, 2022

Abstract

A refrigerator that includes: a storage space configured to be cooled by a refrigeration cycle cooling system; a wall defines a boundary of the storage space; a low temperature case that is arranged adjacent to a portion of a first surface of the wall; a thermoelectric element module (TEM) assembly that is configured to supply cool air to the low temperature case; and a TEM accommodating part that protrudes from the first surface of the wall and that accommodates the TEM assembly, wherein the low temperature case includes an opening through which the TEM accommodating part is inserted, and wherein a sealant is provided between the low temperature case and the wall to couple the low temperature case to the first surface of the wall is disclosed.

First claim

What is claimed is:

1. A refrigerator comprising:
a freezer compartment;
a grill plate located at a first side of the freezer compartment;
a low temperature case located in the freezer compartment, the low temperature case being positioned at a first surface of the grill plate;
a thermoelectric element module (TEM) assembly coupled to a second surface of the grill plate and located at a position corresponding to the low temperature case, the TEM assembly being configured to supply cool air to the low temperature case;
a TEM accommodating part that is coupled to the grill plate and accommodates the TEM assembly;
a shroud coupled to the grill plate and configured to distribute cool air supplied to the freezer compartment; and
a first sealant is applied between the grill plate and the shroud and surrounds the TEM accommodating part,
wherein the shroud comprises an abutting surface that is coupled to the second surface of the grill plate and faces the TEM accommodating part,
wherein the shroud defines a TEM insertion hole in communication with an interior area of the TEM accommodating part, and
wherein the first sealant is applied between the second surface of the grill plate and the abutting surface of the shroud.

2. The refrigerator of claim 1 , wherein the TEM assembly comprises:
a cold sink;
a thermoelectric element disposed rearward relative to the cold sink in a direction toward the second surface of the grill plate;
a heat sink disposed rearward relative to the thermoelectric element;
a heat insulating material disposed between the cold sink and the heat sink;
a module housing that accommodates and supports at least one of the cold sink, the thermoelectric element, the heat insulating material, or the heat sink; and
a flange that extends outward from the module housing and is coupled to the abutting surface of the shroud.

3. The refrigerator of claim 2 , wherein the TEM assembly further comprises:
a spacer coupled to the flange and protrudes from the flange and configured to maintain a space between the grill plate and an inner case of the refrigerator.

4. The refrigerator of claim 2 , further comprising a second sealant that couples the TEM assembly to the shroud and is applied between the flange and the abutting surface.

5. The refrigerator of claim 4 , wherein the flange comprising a coupling portion that overlaps with the abutting surface, and
wherein a width of the coupling portion of the flange is between 5 and 15 mm.

6. A refrigerator comprising:
a freezer compartment;
a grill plate located at a first side of the freezer compartment;
a low temperature case located in the freezer compartment, the low temperature case being positioned at a first surface of the grill plate;
a thermoelectric element module (TEM) assembly coupled to a second surface of the grill plate and located at a position corresponding to the low temperature case, the TEM assembly being configured to supply cool air to the low temperature case;
a TEM accommodating part that is coupled to the grill plate and accommodates the TEM assembly;
a shroud coupled to the grill plate and configured to distribute cool air supplied to the freezer compartment; and
a first sealant is applied between the grill plate and the shroud and surrounds the TEM accommodating part,
wherein the grill plate comprises a rear rib that is disposed at the second surface of the grill plate and extends rearward relative to an outer periphery of the TEM accommodating part, and
wherein the shroud comprises a rib abutting surface that extends rearward relative to the outer periphery of the TEM accommodating part and is in contact with the rear rib.

7. The refrigerator of claim 6 , wherein the first sealant is applied between the rear rib of the grill plate and the rib abutting surface of the shroud to thereby couple the shroud to the grill plate.

8. The refrigerator of claim 6 , wherein the TEM assembly comprises:
a cold sink;
a thermoelectric element disposed rearward relative to the cold sink in a direction toward the second surface of the grill plate;
a heat sink disposed rearward relative to the thermoelectric element;
a heat insulating material disposed between the cold sink and the heat sink;
a module housing that accommodates and supports at least one of the cold sink, the thermoelectric element, the heat insulating material, or the heat sink; and
a flange that extends outward from the module housing,
wherein an outer edge of the flange is in contact with the rib abutting surface.

9. A refrigerator comprising:
a freezer compartment;
a grill plate located at a first side of the freezer compartment;
a low temperature case located in the freezer compartment, the low temperature case being positioned at a first surface of the grill plate;
a thermoelectric element module (TEM) assembly coupled to a second surface of the grill plate and located at a position corresponding to the low temperature case, the TEM assembly being configured to supply cool air to the low temperature case;
a TEM accommodating part that is coupled to the grill plate and accommodates the TEM assembly;
a shroud coupled to the grill plate and configured to distribute cool air supplied to the freezer compartment; and
a first sealant is applied between the grill plate and the shroud and surrounds the TEM accommodating part,
wherein the TEM accommodating part protrudes from the first surface of the grill plate toward the freezer compartment, and
wherein the low temperature case defines an opening that receives the TEM accommodating part.

10. The refrigerator of claim 9 , wherein the low temperature case and the TEM accommodating part of the grill plate are attached to each other by a sealant.

11. The refrigerator of claim 9 , wherein a peripheral surface of the opening is in contact with and coupled to a peripheral surface of the TEM accommodating part by a sealant.

12. The refrigerator of claim 9 , wherein the low temperature case and the grill plate are attached to each other by a sealant.

13. The refrigerator of claim 9 , wherein the opening of the low temperature case surrounds an outer circumferential surface of the TEM accommodating part, and
wherein the low temperature case is coupled to the TEM accommodating part by a sealant disposed between an inner circumferential surface of the opening and the outer circumferential surface of the TEM accommodating part.

14. The refrigerator of claim 13 , wherein the low temperature case comprises a first inclined surface that is disposed outside of the opening and extends toward the first surface of the grill plate, and
wherein the outer circumferential surface of the TEM accommodating part comprises a second included surface that faces the first inclined surface.

15. The refrigerator of claim 14 , wherein the first inclined surface of the low temperature case defines a groove that receives a portion of the second included surface of the TEM accommodating part.

16. The refrigerator of claim 9 , wherein the low temperature case defines has a case opening at a side of the low temperature case, the case opening being positioned away from the grill plate, and
wherein the refrigerator further comprises:
a compartment door configured to open and close the case opening of the low temperature case; and
a gasket that is configured to cover a gap between the compartment door and the low temperature case.

17. The refrigerator of claim 16 , further comprising a refrigerator door configured to open and close the freezer compartment,
wherein the refrigerator do

Assignees

• Lg Electronics Inc

Inventors

• Park Yoo Min
• Yi Myeongha
• Son Jinho

Classifications

• F25B2321/023

  Mounting details thereof · CPC title

• F25B21/02

  using Peltier effect; using Nernst-Ettinghausen effect · CPC title

• F25D19/006

  Thermal coupling structure or interface · CPC title

• F25D2317/061

  through special compartments · CPC title

• F25D25/021

  combined with trays · CPC title