Entrance refrigerator

Patent metadata

Field	Value
Publication number	US-11543169-B2
Application number	US-202016886149-A
Country	US
Kind code	B2
Filing date	May 28, 2020
Priority date	Jan 2, 2020
Publication date	Jan 3, 2023
Grant date	Jan 3, 2023

Abstract

An entrance refrigerator includes a cabinet, a guide plate partitioning the cabinet into a storage compartment at the front and a cold air generating compartment at the rear, a first cold air supply module mounted at an upper portion of a rear surface of the cabinet, a second cold air supply module mounted at a lower portion of the rear surface of the cabinet, wherein each of the first and second cold air supply modules may include a thermoelectric element. An internal air guide is provided on one side of a rear surface of the guide plate between the first cold air supply module and the second cold air supply module and guides cold air forcibly moved by the first cold air supply module and the second cold air supply module to the storage compartment.

First claim

What is claimed is:

1. An entrance refrigerator, comprising:
a cabinet including a front opening, a side opening and an interior space, the cabinet being configured to be embedded in an outer wall partitioning an indoor area and an outdoor area and to receive an article from the outdoor area through the front opening;
a guide plate partitioning the interior space into a storage compartment at a front surface of the guide plate and a cold air generating compartment at a rear surface of the guide plate;
an outer door configured to selectively open and close the front opening, the outer door having an outer surface exposed to the outdoor area;
an inner door configured to selectively open and close the side opening, the inner door having an outer surface exposed to the indoor area; and
a cold air supply assembly configured to supply cold air to the storage compartment, the cold air supply assembly including:
a first cold air supply mounted on an upper portion of a rear surface of the cabinet and spaced from the interior space; and
a second cold air supply mounted on a lower portion of the rear surface of the cabinet; and

an internal air guide provided on the rear surface of the guide plate between the first cold air supply and the second cold air supply, the internal air guide being configured to guide cold air moved by the first cold air supply and the second cold air supply to the storage compartment,
wherein each of the first cold air supply and the second cold air supply includes a thermoelectric element, the thermoelectric element including an endothermic surface on a first side of the thermoelectric element and an exothermic surface on a second side of the thermoelectric element, the first side of the thermoelectric element being opposite to the second side of the thermoelectric element, and
wherein the internal air guide includes:
an upper guide configured to guide cold air moved by the first cold air supply to the storage compartment; and
a lower guide configured to guide cold air moved by the second cold air supply to the storage compartment.

2. The entrance refrigerator of claim 1 , wherein the guide plate includes:
a plate body disposed in the interior space and extending in a vertical direction;
a plurality of intake grilles at a centerline of the plate body;
a plurality of discharge grilles at a horizontal center of the plate body and spaced apart from the plurality of intake grilles in the vertical direction; and
a pair of reinforcing ribs protruding from a rear surface of the plate body and extending from an upper end of the plate body to a lower end of the plate body, and
wherein the plurality of intake grilles and the plurality of discharge grilles are provided between the pair of reinforcing ribs.

3. The entrance refrigerator of claim 2 , wherein the pair of reinforcing ribs are in contact with an inner wall of the cabinet that defines a rear surface of the cold air generating compartment.

4. The entrance refrigerator of claim 2 , wherein each of the plurality of intake grilles and the plurality of discharge grilles includes:
an opening through which air passes; and
a plurality of ribs extending between an upper end of the opening to a lower end of the opening and spaced apart from each other in a horizontal direction.

5. The entrance refrigerator of claim 2 , wherein the plurality of discharge grilles includes:
an upper discharge grille provided near the upper end of the plate body;
a lower discharge grille provided near the lower end of the plate body; and
a central discharge grille provided at a vertical center of the plate body, and
wherein the plurality of intake grilles comprises:
an upper intake grille provided between the upper discharge grille and the central discharge grille; and
a lower intake grille provided between the central discharge grille and the lower discharge grille.

6. The entrance refrigerator of claim 5 , wherein a front end of the internal air guide is positioned at a vertical center of the central discharge grille.

7. The entrance refrigerator of claim 5 , further comprising a plurality of support ribs protruding from the rear surface of the plate body, each support rib extending along an edge of a respective intake grille to define a fan accommodating portion of the respective intake grille.

8. The entrance refrigerator of claim 7 , wherein each of the first cold air supply and the second cold air supply includes:
a cold sink mounted on the endothermic surface of the thermoelectric element;
a heat absorption fan positioned in front of the cold sink, wherein at least a portion of the heat absorption fan is accommodated in a respective one of the fan accommodating portions;
a heat sink mounted on the exothermic surface of the thermoelectric element;
a heat dissipation fan disposed at a rear of the heat sink; and
a heat insulation block surrounding edges of the thermoelectric element and disposed between the cold sink and the heat sink to block heat transfer between the cold sink and the heat sink.

9. The entrance refrigerator of claim 8 , wherein the cabinet further includes:
an outer case forming an outer appearance;
an inner case positioned on an inner side of the outer case and configured to define the interior space; and
an insulator filling a space between the outer case and the inner case, and
wherein an edge of the guide plate is in close contact with an inner surface to partition the interior space into the storage compartment and the cold air generating compartment.

10. The entrance refrigerator of claim 9 , wherein the inner case includes:
a rear wall having a center recess;
an upper through-hole; and
a lower through-hole, the lower through-hole being spaced apart from the upper through-hole in a vertical direction,
wherein the first cold air supply extends through the upper through-hole of the inner case,
wherein the second cold air supply extends through the lower-through hole of the inner case,
wherein the first cold air supply and the second cold air supply are positioned inside of the center recess, and
wherein the center recess has a width corresponding to a space between the pair of reinforcing ribs and extends from an upper end of the inner case to a lower end of the inner case.

11. The entrance refrigerator of claim 10 ,
wherein the upper guide extends from an upper end of the upper through-hole to an upper end of the center recess,
wherein the lower guide extends from a lower end of the lower through-hole to a lower end of the center recess, and
wherein the upper guide and the lower guide are rounded to guide cold air moved by the heat absorption fan toward the storage compartment.

12. The entrance refrigerator of claim 1 , wherein the guide plate comprises:
a bottom portion attached to a bottom wall of the cabinet within the interior space of the cabinet; and
a top portion attached to a top wall of the cabinet within the interior space of the cabinet.

13. An entrance refrigerator, comprising:
a cabinet including a front opening, a side opening and an interior space, the cabinet being configured to be embedded in an outer wall partitioning an indoor area and an outdoor area and to receive an article from the outdoor area through the front opening;
a guide plate partitioning the interior space into a storage compartment at a front surface of the guide plate and a cold air generating compartment at a rear surface of the guide plate;
an outer door configured to selectively open and close the front opening, the outer door having an outer surface exposed to the outdoor area;
an inner door configured to selectively open and clo

Assignees

• Lg Electronics Inc

Inventors

• Kim Daewoong
• Oh Minkyu
• Kwon Boan

Classifications

• F25D13/00

  Stationary devices, e.g. cold-rooms · CPC title

• G07F17/12

  comprising lockable containers, e.g. for accepting clothes to be cleaned · CPC title

• F25D2317/067

  characterised by air ducts · CPC title

• F25B21/02 Primary

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

• F25D2317/063

  with air guides · CPC title