Refrigerator air duct system

Abstract

The refrigerator air duct system comprises an inner container, an air duct base is installed in the inner container, an evaporator cavity is formed between the air duct base and the rear side wall of the inner container, an air duct cover plate is installed on the front side of the air duct base, an air duct cavity is formed between the air duct cover plate and the air duct base, and the space of the front side of the air duct cover plate is a storage chamber; a plurality of auxiliary air duct assemblies are arranged on the outer wall of the inner container in the circumferential direction at intervals, each auxiliary air duct assembly comprises an air guide pipe, a second draught fan is installed in each air guide pipe, one end of each air guide pipe communicates with the evaporator cavity, the other end of each air guide pipe extends forwards and is provided with a fan-shaped air collecting cover, and an air opening in the front end of each fan-shaped air collecting cover is in a strip shape and located in the position close to the outer edge of the inner container; the air opening is connected with an L-shaped air guide nozzle, and the L-shaped air guide nozzle penetrates through the wall of the inner container and extends to the storage chamber. By means of the unique air duct structural design, cold air can be circulated into the storage chamber by 360 degrees in the refrigeration state, rapid cooling of the storage chamber is achieved, and it is guaranteed that the temperatures of all the positions of the storage chamber are consistent.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerators, and in particular to an air duct system for a refrigerator. Background Art

[0002] Refrigerators are the most commonly used household appliances in daily life. At present, the air outlet of air-cooled refrigerators is generally located on the back wall of the storage room. When the storage room is full of food, the air outlet is easily blocked, resulting in the inability of the cold air to reach the space in front of the storage room, that is, the cold air cannot circulate 360° without dead ends to the storage room, which leads to a temperature difference between the front and back spaces of the storage room, affecting the storage of food. In addition, when the user opens the refrigerator door, a large amount of cold air overflows, and the cold air hits the face and directly contacts the human body, posing a potential threat to the user's health. At the same time, it will also cause large temperature fluctuations in the box, frequent defrosting, and increased energy consumption of the refrigerator. In view of this, it is necessary to improve the existing technology. Summary of the invention

[0003] The object of the present invention is to provide a refrigerator air duct system, aiming to solve at least one of the technical problems existing in the above-mentioned prior art. To achieve the above-mentioned object, the technical solution adopted is as follows:

[0004] A refrigerator air duct system comprises an inner container, an air duct base is installed in the inner container, an evaporator cavity is formed between the air duct base and the rear side wall of the inner container, an air duct cover is installed on the front side of the air duct base, an air duct cavity is formed between the air duct cover and the air duct base, and the space in front of the air duct cover is a storage compartment;

[0005] An air supply port is provided on the air duct base, the air supply port is connected to the evaporator cavity and the air duct cavity, a first fan is installed at the air supply port, a return air port is provided between the bottom end of the air duct base and the inner tank wall, the return air port is connected to the storage compartment and the evaporator cavity, and a plurality of air outlets are provided on the air duct cover plate, each of which is connected to the storage compartment and the air duct cavity;

[0006] A plurality of auxiliary air duct assemblies are arranged at circumferential intervals on the outer wall of the inner tank, and the auxiliary air duct assembly includes an air guide pipe, in which a second fan is installed, one end of the air guide pipe is connected to the evaporator cavity, and the other end extends forward and is installed with a fan-shaped air collecting hood, the front end air outlet of the fan-shaped air collecting hood is strip-shaped and is located near the outer edge of the inner tank, the air outlet is connected to an L-shaped air guide nozzle, and the L-shaped air guide nozzle passes through the inner tank wall and extends to the storage compartment.

[0007] Preferably, when the refrigerator door is closed and the refrigerator is refrigerating, the first fan is started, and under the driving action of the first fan, the cold air in the evaporator cavity enters the air duct cavity, and then enters the storage room through the air outlet. At the same time, the second fan in each group of auxiliary air duct components is started and rotates forward. Under the driving action of the second fan, the cold air in the evaporator cavity enters the storage room through the air duct, the fan-shaped air collecting hood and the L-shaped air guide nozzle in turn, and the air in the storage room enters the evaporator cavity through the return air port and circulates.

[0008] Preferably, when the refrigerator door is open, the first fan is turned off, and the second fan in each group of auxiliary air duct components is started and reversed. Driven by the second fan, the cold air in the storage compartment enters the evaporator cavity through the L-shaped air guide nozzle, the fan-shaped air collecting hood and the air guide duct in turn, and the air in the evaporator cavity enters the storage compartment through the return air port and circulates.

[0009] Preferably, there are four groups of auxiliary air duct components, which are arranged in sequence on the upper side, right side, lower side and left side of the outer wall of the inner tank.

[0010] Preferably, a grille plate is provided inside the L-shaped air guide nozzle to prevent clogging by foreign matter.

[0011] Preferably, the L-shaped air guide nozzle is arranged inclined toward the interior of the storage compartment.

[0012] Preferably, an air guide plate is installed at the bottom of the air duct base to improve the return air efficiency from the storage compartment to the evaporator cavity.

[0013] Preferably, the air duct cover plate is clamped on the air duct base.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The refrigerator air duct system of the present invention can circulate cold air 360 degrees into the storage room in the refrigeration state through a unique air duct structure design, so as to achieve rapid cooling of the storage room and ensure that the temperature of each position in the storage room is consistent. In addition, when the user opens the door, it can effectively prevent the cold from overflowing and prevent the external heat from entering, so as to achieve constant temperature when the door is opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a front view of the internal structure of the liner of the present invention.

[0019] Figure 3 This is the rear view of the internal structure of the liner of the present invention

[0020] Figure 4 It is a schematic diagram of the structure of the auxiliary air duct assembly of the present invention.

[0021] In the figure: 1. Inner tank; 2. Air duct base; 3. Evaporator; 4. Air duct cover; 5. First fan; 6. Air guide plate; 7. Air outlet; 8. Air guide duct; 9. Second fan; 10. Fan-shaped air collecting hood; 11. L-shaped air guide nozzle; 12. Grille plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figures 1 to 3 As shown, a preferred embodiment of the present invention provides a refrigerator air duct system.

[0025] The system includes an inner container 1, in which an air duct base 2 is fixedly installed, and an evaporator cavity is formed between the air duct base 2 and the rear side wall of the inner container 1. An evaporator 3 is arranged in the evaporator cavity, which is one of the important components of the refrigerator refrigeration system. An air duct cover plate 4 is arranged in the inner container 1 and located in front of the air duct base 2. Specifically, the air duct cover plate 4 is clamped on the air duct base 2, and an air duct cavity is formed between the air duct cover plate 4 and the air duct base 2. The space in front of the air duct cover plate 4 in the inner container 1 is a storage compartment.

[0026] An air supply port is provided at the upper position of the air duct base 2, and the air supply port connects the evaporator cavity and the air duct cavity, and a first fan 5 is installed at the air supply port. A return air port is provided between the bottom end of the air duct base 2 and the wall of the inner tank 1, and the return air port connects the storage compartment and the evaporator cavity. Furthermore, an air guide plate 6 is integrally formed at the bottom of the air duct base 2 to improve the return air efficiency from the storage compartment to the evaporator cavity. A plurality of air outlets 7 are evenly provided on the air duct cover plate 4, and each air outlet 7 connects the storage compartment and the air duct cavity.

[0027] Several auxiliary air duct components are arranged at intervals along the circumferential direction on the outer wall of the inner liner 1. The present invention preferably has four sets of auxiliary air duct components, one set is installed on the upper side, right side, lower side and left side of the outer wall of the inner liner, and one set of auxiliary air duct components is used as an example for description:

[0028] like Figure 4 As shown, the auxiliary air duct assembly includes an air duct 8, in which a second fan 9 is installed, one end of the air duct 8 is connected to the evaporator chamber, and the other end of the air duct 8 extends forward and is installed with a fan-shaped air collecting hood 10, the front end air outlet of the fan-shaped air collecting hood 10 is strip-shaped and is located near the outer edge of the inner tank 1, the front end air outlet of the fan-shaped air collecting hood 10 is connected to an L-shaped air guide nozzle 11, the L-shaped air guide nozzle 11 passes through the wall of the inner tank 1 and extends to the storage compartment. Specifically, the L-shaped air guide nozzle 11 is arranged inclined toward the inside of the storage compartment.

[0029] Furthermore, a grille plate 12 is provided inside the L-shaped air guide nozzle 11 to prevent clogging by foreign matter.

[0030] When the refrigerator door is closed, when the refrigerator is refrigerating, that is, the refrigeration system of the refrigerator is working, at this time, the first fan 5 is started, and under the driving action of the first fan 5, the cold air in the evaporator cavity enters the air duct cavity, and then enters the storage room through the air outlet 7. At the same time, the second fan 9 in each group of auxiliary air duct components is started and rotates forward. Under the driving action of the second fan 9, the cold air in the evaporator cavity passes through the air duct 8, the fan-shaped air collecting hood 10 and the L-shaped air guide nozzle 11 in turn into the storage room, and the air in the storage room enters the evaporator cavity through the return air port and circulates.

[0031] Through the above-mentioned air duct design, when the refrigerator is in refrigeration state, the cold air can circulate 360° into the storage room, solving the problem of uneven temperature between the front and back of the storage room when it is fully loaded, and the cooling efficiency of the storage room is higher.

[0032] When the refrigerator door is open, the refrigerator refrigeration system is turned off and refrigeration is stopped. The first fan 5 is turned off, and the second fan 9 in each auxiliary air duct assembly is started and reversed. Driven by the second fan 9, the cold air in the storage compartment enters the evaporator cavity through the L-shaped air guide nozzle 11, the fan-shaped air collecting hood 10 and the air guide duct 8 in turn. The air in the evaporator cavity enters the storage compartment through the return air port and circulates.

[0033] The hot air from outside cannot enter the storage room during the door opening process, achieving a constant temperature when the door is opened. This solves the problems of large temperature fluctuations in the storage room, frequent defrosting, and increased energy consumption of the refrigerator. In addition, the cold air in the storage room cannot overflow, preventing the cold air from rushing towards the user and making the user feel uncomfortable, thereby improving the user experience.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A refrigerator air duct system, comprising an inner tank, characterized in that: An air duct base is installed in the inner tank, an evaporator cavity is formed between the air duct base and the rear side wall of the inner tank, an air duct cover is installed on the front side of the air duct base, an air duct cavity is formed between the air duct cover and the air duct base, and the space in front of the air duct cover is a storage compartment; An air supply port is provided on the air duct base, the air supply port is connected to the evaporator cavity and the air duct cavity, a first fan is installed at the air supply port, a return air port is provided between the bottom end of the air duct base and the inner tank wall, the return air port is connected to the storage compartment and the evaporator cavity, and a plurality of air outlets are provided on the air duct cover plate, each of which is connected to the storage compartment and the air duct cavity; A plurality of auxiliary air duct assemblies are arranged at circumferential intervals on the outer wall of the inner tank, and the auxiliary air duct assembly includes an air guide pipe, in which a second fan is installed, one end of the air guide pipe is connected to the evaporator cavity, and the other end extends forward and is installed with a fan-shaped air collecting hood, the front end air outlet of the fan-shaped air collecting hood is strip-shaped and is located near the outer edge of the inner tank, the air outlet is connected to an L-shaped air guide nozzle, and the L-shaped air guide nozzle passes through the inner tank wall and extends to the storage compartment.

2. A refrigerator air duct system according to claim 1, characterized in that: When the refrigerator door is closed and the refrigerator is refrigerating, the first fan starts. Driven by the first fan, the cold air in the evaporator cavity enters the air duct cavity, and then enters the storage room through the air outlet. At the same time, the second fan in each group of auxiliary air duct components starts and rotates forward. Driven by the second fan, the cold air in the evaporator cavity enters the storage room through the air duct, the fan-shaped air collecting hood and the L-shaped air guide nozzle in turn. The air in the storage room enters the evaporator cavity through the return air outlet and circulates.

3. A refrigerator air duct system according to claim 1, characterized in that: When the refrigerator door is open, the first fan is turned off, and the second fan in each auxiliary air duct assembly is started and reversed. Driven by the second fan, the cold air in the storage compartment enters the evaporator cavity through the L-shaped air guide nozzle, the fan-shaped air collecting hood and the air guide duct in turn. The air in the evaporator cavity enters the storage compartment through the return air port and circulates.

4. A refrigerator air duct system according to claim 1, characterized in that: There are four groups of auxiliary air duct components, which are arranged in sequence on the upper side, right side, lower side and left side of the outer wall of the inner tank.

5. The refrigerator air duct system according to claim 1, characterized in that: A grille plate is arranged inside the L-shaped air guide nozzle to prevent clogging by foreign matter.

6. The refrigerator air duct system according to claim 1, characterized in that: The L-shaped air guide nozzle is arranged obliquely toward the interior of the storage compartment.

7. The refrigerator air duct system according to claim 1, characterized in that: An air guide plate is installed at the bottom of the air duct base to improve the return air efficiency from the storage compartment to the evaporator cavity.

8. The refrigerator air duct system according to claim 1, characterized in that: The air duct cover plate is clamped on the air duct base.

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