JP2002318054A - refrigerator - Google Patents

Abstract

(57) [Abstract] [Problem] To circulate cool air returning to a cooler by circulating in a refrigerator compartment smoothly, make uniform frost formation of the cooler, improve cooling performance with less duct loss, and reduce power consumption. To provide a refrigerator that can contribute to reduction. SOLUTION: A cooler 13 for the refrigerator compartment 7 and a vegetable compartment 8 is provided at an upper rear portion of the refrigerator compartment 7, and a front cover 14 which is open vertically at the front of the refrigerator 13 is provided. Is formed, and a cool air passage 18 communicating with the cool air generating chamber 15 is formed in the ceiling of the inner box 3 and has a cool air outlet 17 at least in the front left and right directions. A blower 20 for forced air circulation is provided on the inlet side of the cool air passage 18.
In the refrigerator provided with, the cool air returning from the cool air return passage 16 to the cool air generating chamber 15 is provided on the front cover 14 with a plurality of cool air return ports 14a facing the cooler 13, and from the cool air return port 14a. A part of the returned cool air is returned to the cooler 13 from the front.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator, and more particularly, to a cooler for generating cool air for an upper storage room and a structure around the cooler of the refrigerator using a blower for forced air circulation.

[0002]

2. Description of the Related Art In a refrigerator, for example, as shown in FIGS. 1 and 4, the inside of a heat insulating box 1 in which a heat insulating material 4 is filled between an outer box 2 and an inner box 3 is provided. Is divided into an upper refrigerator compartment 7, a central vegetable compartment 8 and a lower freezer compartment 9,
At the rear upper part of the refrigerator compartment 7, the refrigerator compartment 7 and the vegetable compartment 8
A cooler 13 is provided, and a front cover 14 having an open top and bottom is provided in front of the cooler 13 to form a cool air generation chamber 15 having the cooler 13, and cool air in the vegetable room 7 is cooled. A cool air return passage 16 having a cover 16a formed with a cool air return port 16b for returning to the cool air generation chamber 15 is formed.

On the other hand, the ceiling of the inner box 3 has a cool air outlet 17 at least in the front left and right directions, and a cool air passage 18 communicating with the cool air generating chamber 15 is formed between the ceiling and the ceiling. The cold air passage 1 formed by mounting the ceiling cover 19 while covering the cover 19
There is a configuration in which a cross-flow fan 20 for forced air circulation is provided on the inlet side of the cooler 8 (in the front left and right direction of the cooler 13) to supply cool air evenly to the refrigerator compartment 7.

However, the cool air generated by the cooler 13 is supplied by the cross flow fan 20 from the cool air outlet 17 provided on the ceiling to the inside of the refrigerator compartment 7 and provided on the back surface of the refrigerator compartment 7. The returned cool air is returned to the lower part of the cooler 13 from the cooled cool air return port 16b and returned to the lower part of the cooler 13. Frost is concentrated on the surface, and the frosted frost is clogged in the lower part, and there is a problem that the frost tends to become a resistance to the flow of cold air.

[0005]

SUMMARY OF THE INVENTION In the present invention, in view of the above problems, the cool air circulating in the refrigerator compartment and returning to the cooler can be smoothly circulated, uniformizing the frost formation of the cooler, and reducing the duct loss. It is an object of the present invention to provide a refrigerator capable of improving cooling performance and reducing power consumption.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention solves the above-mentioned problems by enclosing the inside of a heat insulating box formed by filling a heat insulating material between an outer box and an inner box by a plurality of heat insulating partitions. A front cover which is divided into a storage room and a lower freezing room, and a cooler for generating cool air for the upper storage room is provided at an upper rear portion of the upper storage room, and an upper and lower opening is provided in front of the cooler. Forming a cool air generation chamber having the cooler, and providing a cool air return passage having a cover formed with a cool air return port for returning the cool air in the central storage chamber to the cool air generation chamber. A ceiling cover having a cool air outlet at least in the front left and right directions and forming a cool air passage communicating with the cool air generation chamber between the ceiling and the ceiling is formed, and is formed by attaching the ceiling cover. Predetermined position of the cold air passage In a refrigerator provided with a blower for forced air circulation, the cool air returning from the cool air return passage to the cool air generation chamber is provided on the front cover with a plurality of cool air return ports facing the cooler, and the cool air return port is provided. And a part of the cool air is returned to the cooler from the front.

The diameter of each of the cool air return ports is formed so as to be gradually wider from the top to the bottom of each cool air return port.

The cool air return port is formed in a rectangular shape in the left-right direction.

A guide portion is formed at the cool air return port of the front cover at the upper side of the cool air return port toward the cooler.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below as examples based on the attached drawings. FIG. 1 is a side sectional view showing a schematic configuration of a refrigerator according to the present invention, and FIG.
FIG. 3 is an enlarged side sectional view of a main part showing a relationship around a cooler for an upper storage room according to an embodiment of the present invention, and FIG. 3 is an enlarged side sectional view of a main part showing a return state of returned cool air according to the present invention ( A)
FIG. 3B is a front view (B) of the cooler front cover. Note that the same reference numerals are used for the same parts as in the related art.

In FIG. 1, reference numeral 1 denotes an insulating box (also referred to as a refrigerator body) including an outer box 2 made of a steel plate, an inner box 3 made of a synthetic resin, a foamed heat insulating material 4 and the like. ,
6 divides into an upper refrigerator compartment 7, a central vegetable compartment 8, and a lower freezer compartment 9.

At the rear upper portion of the refrigerator compartment 7, the refrigerator compartment 7 is provided.
And a cooler 13 for the vegetable compartment 8, and a front cover 14 having an open top and bottom is provided in front of the cooler 13 to form a cool air generation chamber 15 having the cooler 13. A cool air return passage 16 having a cover 16a formed with a cool air return port 16b for returning cool air inside to the cool air generating chamber 15 is formed.

On the other hand, the ceiling of the inner box 3 has a cool air outlet 17 at least in the front left and right directions, and a cool air passage 18 communicating with the cool air generation chamber 15 is formed between the ceiling and the ceiling. The cold air passage 18 formed by mounting the ceiling cover 19 while covering the cover 19
A cross-flow fan 20 for forced air circulation is provided on the inlet side (in the left and right direction in front of the cooler 13).

A cooler 21 dedicated to the freezing room 9 and a blower 22 for forced air circulation are arranged behind the freezing room 9 and a front cover 23 having a cool air outlet and the like is provided in front of the cooler 21. Has become. Reference numeral 24 denotes a compressor, 1
0 is a door of the refrigerator compartment 7, 11 is a door of the vegetable compartment 8, and 12 is a door of the freezer compartment 9.

Next, the cooler 13 disposed in the cool air generation chamber 15 will be described. The cooler 13
The cold air generated by the cross flow fan 20
With the operation, the cold air passes through the cold air passage 18 and is sent out from the cold air outlet 17 in front to the refrigerator compartment 7, and then the cold air returns from the cold air return port 16 b provided in the rear surface of the refrigerator compartment 7. The cool air returned to the return passage 16 and returned is returned to the lower part of the cooler 13. On the other hand, the cool air is also supplied to the vegetable room 8 through a cool air passage (not shown), and the cool air in the vegetable room 8 is returned to the cool air generating chamber 15 through the cool air return passage 16. I have.

As shown in FIG. 2, the cold air return passage 16
The cool air returning to the cool air generating chamber 15 from the air cooler 13 is provided to the front cover 14 by a plurality of cool air return ports 14 facing the cooler 13.
a, a part of the cool air returned from the cool air return port 14a,
It is returned to the cooler 13 from the front.

As shown in FIG. 3, the diameter of each of the cold air return ports 14a formed in the front cover 14 in a rectangular shape in the left-right direction is gradually increased from the top to the bottom of each of the cold air return ports 14a. As a result, the returned cool air is cooled by the cooler 1.
The cooling air is returned to the whole of the cooler 13 evenly without returning only to the upper part of the cooler 3, and the flow of the cool air generated by the cooler 13 is returned so as not to be hindered by the cool air, so that the flow of the cool air is smooth.

The upper side of the cool air return port 14a is connected to the cooler 1 by the cool air return port 14a of the front cover 14.
A guide portion 14b having a U-shaped cross section toward 3 is formed so that dew condensation does not drip from the cool air return port 14a of the front cover 14 and drip to the cooler 13 side. Similarly, the lower side of the front cover 14 also has a guide portion 14c having a U-shaped cross section toward the cooler 13.

The cool air returning to the cool air return passage 16 from the cool air return port 16b at the upper portion provided on the back surface of the refrigerator compartment 7 has a small heat exchange, so that it only passes through the upper front part of the cooler 13. Thus, it is possible to generate sufficiently cooled cold air. Further, as in the conventional case, the cooler 13
When the cool air is returned to the lower part of the air conditioner, it is possible to improve that the return cool air is likely to become warm, and the heat exchange of the cooler 13 can be effectively utilized.

According to the above configuration, it is possible to return the high-humidity return cool air from the front surface of the cooler 13,
It is possible to eliminate the problem that frost is concentrated on the lower part of the cooler 13 and the frost formed on the lower part is clogged at the lower part and easily becomes a resistance to the flow of cool air.

[0021]

As described above, according to the present invention,
Refrigerator that can circulate cool air returning to the cooler through the refrigerator compartment smoothly, uniform frost on the cooler, improve cooling performance with less duct loss, and contribute to reducing power consumption. Becomes

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a schematic configuration of a refrigerator according to the present invention and a conventional example.

FIG. 2 is an enlarged side sectional view of a main part showing a relationship around a cooler for an upper storage room according to an embodiment of the present invention.

FIG. 3 is an enlarged side sectional view of a main part showing a return state of return cool air according to the present invention (A), and a front view of a cooler front cover (B).
It is.

FIG. 4 is an enlarged side sectional view of a main part showing a relationship around a cooler for an upper storage room in a conventional example.

[Explanation of symbols]

 2 Outer box 1 Insulated box (refrigerator body) 2 Outer box 3 Inner box 4 Insulation material 5, 6 Insulated partition 7 Refrigerator room 8 Vegetable room 9 Freezer room 10 Refrigerator room door 11 Vegetable room door 12 Freezer room door 13 Cooler 14 Front cover 14a Cold air return port 14b, 14c Guide 15 Cold air generation chamber 16 Cold air return path 16a Cover 16b Cold air return port 17 Cold air outlet 18 Cold air path 19 Ceiling cover 20 Cross flow fan 21 Cooler 22 Blower 23 Front cover 24 Compression Machine

Claims (4)

[Claims] 1. An interior of a heat insulating box formed by filling a heat insulating material between an outer box and an inner box is partitioned into a plurality of upper storage compartments and a lower freezer compartment by a plurality of heat insulating partitions. At the rear upper part of the storage room, a cooler for generating cool air for the upper storage room is provided, and a front cover with upper and lower openings is provided in front of the cooler to form a cool air generation chamber including the cooler. Providing a cool air return passage having a cover formed with a cool air return port for returning cool air in the central storage chamber to the cool air generation chamber, wherein the ceiling of the inner box has a cool air outlet at least in the front left and right directions. A ceiling cover adapted to form a cool air passage communicating with the cool air generation chamber is provided between the cooling air supply chamber and a blower for forced air circulation is provided at a predetermined position of the cool air passage formed by attaching the ceiling cover. Refrigerator The cool air returning from the cool air return passage to the cool air generating chamber is provided with a plurality of cool air return ports on the front cover facing the cooler, and a part of the cool air returning from the cool air return port is provided to the cooler in front of the cooler. A refrigerator characterized by being returned from a refrigerator. 2. The refrigerator according to claim 1, wherein the diameter of each of the cool air return ports is formed to be gradually wider from the top to the bottom of each cool air return port. 3. The refrigerator according to claim 1, wherein the cool air return port is formed in a rectangular shape in the left-right direction. 4. The refrigerator according to claim 1, wherein a guide portion is formed at a cool air return port of the front cover, and a guide portion is formed on an upper side of the cool air return port toward the cooler.