JP3234788U - Refrigerator air passage structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air passage structure of a refrigerator which can make the structure more compact and smaller than the overall volume. SOLUTION: A blower / return air module 2 is attached to a circulating air box 4 in a refrigerator body, a blower duct 21 and a return air duct 22 are provided in the blower / return air module, and the blower duct and the return air duct are inside. A blower is provided in the air duct to communicate with the circulation air box provided with an evaporator, and the air duct communicates with the air outlet 11 provided on the back of the refrigerator compartment of the refrigerator body through the air passage, and the return air duct. Is communicated with the return air port 12 through the return air passage, and the return air port is provided at a position close to the return air duct on one side of the blower / return air module. The structure is simple, and by integrating the blower duct and return air duct into the blower / return air module, the space taken up by the blower duct and return air duct is greatly saved, and the back side blows air and the side air returns. Can be designed to maximize the internal space of the refrigerator. [Selection diagram] Fig. 1

Description

The present invention relates to the field of manufacturing technology for refrigerators, and particularly to the air passage structure of refrigerators.

The principle of an air-cooled refrigerator is to build air circulation in the refrigerator and freezer to form cooling. The pipe of the freezer evaporator of a normal air-cooled refrigerator is provided in the freezer chamber, the fan motor is also attached to the freezer chamber, and the fan motor is usually attached to the upper part of the evaporator. When the compressor is operating, the fan motor is energized and operated at the same time, and the forced convection of the fan sends cold air to the space of the freezer and refrigerator, so the cooling is relatively uniform and the overall temperature is also high. It will be very uniform.

The evaporator used in an air-cooled refrigerator is a fin-type evaporator, and since frost easily adheres to the fins, a heater is usually attached to the evaporator, and the structure of the heater is different, and the mounting method and structure are also different. Its main role is to melt the frost on the evaporator. The thickness of frost on the refrigerator evaporator also affects the cooling effect of the refrigerator, so defrosting is usually performed on a regular basis, and the defrosting cycle is also a heating system via a defrosting timer installed in the compressor chamber. Achieve switching between and the cooling system.

In an air-cooled refrigerator, the design of the air passage structure is very important. The air duct and return air duct of the conventional air-cooled refrigerator are generally provided on the back side of the refrigerator, and since the air duct needs to secure sufficient ventilation volume, a large space is taken and the center of the conventional air duct. The bent part is an inclined part, and after the ventilation duct is installed, a lot of space is wasted under the bent part, which is disadvantageous for the compactness of the refrigerator structure and the miniaturization of the volume of the refrigerator. .. As a result, it was necessary to further improve the air passage structure of the conventional air-cooled refrigerator.

An object of the present invention is to make up for the above-mentioned defects and to disclose to the world the air passage structure of a refrigerator having a simple and compact structure and a high space utilization rate.

The technical means of the present invention is an air passage structure of a refrigerator provided with a refrigerator main body, in which a blower / return air module is attached to a circulating air box in the refrigerator main body, and a blower duct is attached to the blower / return air module. And a return air duct is provided, the blower duct and the return air duct communicate with a circulation air box provided with an evaporator inside, a blower is provided in the blower duct, and the blower duct passes through a blower passage. The return air duct communicates with the return air port through the return air passage, and the return air port communicates with the return air port provided on the back of the refrigerator compartment of the refrigerator body. It is installed near the duct.

As a preferred technical means, as an improved form, the air duct is manufactured of a square pipe, the return duct has a flat structure, and the air return duct is laterally lateral to the side surface of the air duct. Be placed.

As an improved form, the return air duct is arranged at an angle so that the outlet at the lower end of the return air duct is separated from the air duct.

As an improved form, the return port is provided behind a central drawer.

As an improved form, a reinforcing rib is provided on the outer wall of the return air duct.

As an improved form, the blower is an axial fan, and the volume of the axial fan is small.

The present invention has the following advantages over the prior art.
The air passage structure of the refrigerator of the present invention has a simple structure, and by integrating the air duct and the air return duct into the air / return air module, the space taken up by the air duct and the air return duct is greatly saved, and the air blows. The outlet is provided on the back of the refrigerator compartment of the refrigerator body, and the return air port is provided near the return air duct on one side of the air blow / return air module, forming a structure in which the back side blows air and the side air returns. , The internal space of the refrigerator can be maximized, the structure of the refrigerator can be made more compact, and the overall volume of the refrigerator can be made smaller.

It is a three-dimensional structure diagram of this invention. It is an enlarged view of the part A in FIG. It is sectional drawing of this invention. It is a front view of this invention.

The present invention will be described in more detail below with reference to the drawings.

As shown in FIGS. 1 to 4, the air passage structure of the refrigerator provided with the refrigerator main body 1 is provided, and the air blowing / returning air module 2 is attached to the circulating air box 4 in the refrigerator main body 1, and the blowing / returning air is returned. The air module 2 is provided with a blower duct 21 and a return air duct 22, and the blower duct 21 and the return air duct 22 communicate with a circulation air box 4 provided with an evaporator 3 inside, and the blower device is inside the blower duct 21. 5 is provided, the air duct 21 communicates with the air outlet 11 provided on the back surface of the refrigerating chamber of the refrigerator main body 1 via the air passage, and the return air duct 22 communicates with the air return port 12 through the air return passage. Through communication, the return air port 12 is provided at a position close to the return air duct 22 on one side of the blower / return air module 2.

The air return duct 21 is manufactured of a square pipe, the return air duct 22 has a flat structure, and the return air duct 22 is arranged sideways beside the side surface of the air duct 21.

The return air duct 22 is arranged diagonally, and the outlet at the lower end of the return air duct 22 is separated from the air duct 21. By arranging the return air duct 22 at an angle, the distance between the lower end outlet of the return air duct 22 and the lower end inlet of the air duct 21 is increased, whereby the lateral distance in the circulation air box 4 (this). By increasing the lateral distance (the length of the evaporator 3 matches), the heat exchange distance of the air in the evaporator 3 is increased, and the cooling / cooling effect is ensured while reducing the space taken.

The return port 12 is provided behind the central drawer 6. The cross section of the central drawer 6 has a structure having a "匚" shape, and the structure is compact because the blower / return air module 2 is arranged in the concave groove of the central drawer 6.

A reinforcing rib 22a is provided on the outer wall of the return air duct 22. By installing the reinforcing rib 22a, the strength of the return air duct 22 can be increased.

The blower 5 is an axial fan, has an advantage that the volume of the axial fan is small, and is advantageous for miniaturization of the refrigerator structure.

<Principle of operation>
The air outlet 11 of the air passage structure of the present invention is provided on the back surface of the refrigerating chamber of the refrigerator body 1 (between the urethane foam layers of the refrigerating and freezing box), and the return air port 12 is on one side of the air blower / return air module 2. By assembling the blower / return air module 2 to the circulation air box 4, the circulation air box 4-the blower duct 21-the blower passage-the outlet 11-the internal space of the refrigerator-return The air circulation of the air port 12-return air passage-return air duct 22-circulation air box 4 is formed. The air passage structure of the present invention forms a structure in which the back surface blows air and the side surfaces return air, making the best use of the internal space of the refrigerator and making the structure of the refrigerator more compact.

The blower duct 21 and the return air duct 22 are integrated into the blower / return air module 2, and by arranging both the blower duct 21 and the return air duct 22 side by side, the space taken is reduced and the structure becomes more compact. It also makes assembly more convenient.

The above are only preferred embodiments of the present invention, which do not limit the embodiments and scope of protection of the present invention. For those skilled in the art, the solutions obtained by the replacement of equivalents and the obvious changes made based on the contents shown in the specification and figures of the present invention are included in the scope of protection of the present invention.

1 Refrigerator body 11 Air outlet 12 Return air port 2 Blower / return air module 21 Blower duct 22 Return air duct 22a Reinforcing rib 3 Evaporator 4 Circulation air box 5 Blower 6 Central drawer

Claims (6)

It is an air passage structure of a refrigerator provided with a refrigerator main body (1), and a blower / return air module (2) is attached to a circulating air box (4) in the refrigerator main body (1), and the blower / return air module (2) is attached. The ventilation duct (21) and the return air duct (22) are provided in (2), and the ventilation duct (21) and the return air duct (22) are provided with an evaporator (3) inside the circulation air box (2). A blower (5) is provided in the blower duct (21) in communication with 4), and the blower duct (21) is provided on the back surface of the refrigerator compartment of the refrigerator body (1) via the blower passage. The return air duct (22) communicates with the return air port (12) via the return air passage, and the return air port (12) communicates with the air return / return air module (2). A refrigerator air passage structure characterized in that it is provided at a position close to the return air duct (22) on one side. The air duct (21) is manufactured of a square pipe, the return air duct (22) has a flat structure, and the air return duct (22) is arranged sideways beside the side surface of the air duct (21). The air duct structure of the refrigerator according to claim 1. The air passage structure for a refrigerator according to claim 2, wherein the return air duct (22) is arranged obliquely, and the outlet at the lower end of the return air duct (22) is separated from the air duct (21). The air passage structure of the refrigerator according to claim 3, wherein the return air port (12) is provided behind a central drawer (6). The air passage structure for a refrigerator according to claim 4, wherein a reinforcing rib (22a) is provided on the outer wall of the return air duct (22). The air passage structure of the refrigerator according to any one of claims 1 to 5, wherein the blower (5) is an axial fan.

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