Refrigerator air duct structure

Abstract

The application discloses a refrigerator air duct structure, which comprises an inner container, wherein an air duct base is arranged in the inner container, an evaporator cavity is formed between the air duct base and a rear sidewall of the inner container, a partition plate is arranged on the rear side of the air duct base, the partition plate divides the evaporator cavity into a left evaporator cavity and a right evaporator cavity arranged on the left and right sides, a front side of the air duct base is provided with an air duct cover plate, an air duct cavity is formed between the air duct cover plate and the air duct base, an air duct foam is arranged in the air duct cavity, the air duct foam divides the air duct cavity into a first air supply air duct, a second air supply air duct and a return air duct, a middle partition plate is vertically arranged on the front side of the air duct cover plate, and the middle partition plate divides the inner space of the inner container into an upper storage compartment and a lower storage compartment arranged in the upper and lower sides. The air duct structure solves the mutual smell mixing problem of the upper and lower two compartments arranged in the lower part of the existing French four-door refrigerator.

Description

Technical Field

[0001] This invention relates to the field of refrigerator technology, and more specifically, to a refrigerator air duct structure. Background Technology

[0002] Currently, high-end refrigerators typically have multiple independent evaporators to prevent odors from mixing between different storage compartments. For example... Figure 4 The four-door refrigerator shown has three evaporators. The top two doors are the refrigerator compartment, which is cooled by the refrigerator evaporator. The lower left door is the freezer compartment, which is cooled by the freezer evaporator. The lower right door is the variable temperature compartment, which is cooled by the variable temperature evaporator. In this way, each compartment has its own independent evaporator, which effectively prevents odors from mixing.

[0003] like Figure 5 The French four-door refrigerator shown has two upper doors for the refrigerator compartment, which is cooled by the refrigerator evaporator. The lower compartment consists of a variable temperature compartment and a freezer compartment arranged vertically. Due to the size of the refrigerator, the variable temperature compartment and the freezer compartment are too small in height to accommodate two evaporators vertically. Therefore, the variable temperature compartment and the freezer compartment can only share one evaporator. As a result, the variable temperature compartment and the freezer compartment in the lower part of the existing French four-door refrigerator cannot meet the requirement of preventing odor mixing.

[0004] Therefore, it is necessary to improve the existing technology. Summary of the Invention

[0005] The purpose of this invention is to provide a refrigerator air duct structure, aiming to solve at least one of the technical problems existing in the prior art. To achieve the above objective, the technical solution adopted is as follows:

[0006] A refrigerator air duct structure includes an inner liner, an air duct base installed inside the inner liner, an evaporator cavity formed between the air duct base and the rear side wall of the inner liner, and a partition plate provided on the rear side of the air duct base, which divides the evaporator cavity into a left evaporator cavity and a right evaporator cavity arranged to the left and right.

[0007] A duct cover plate is installed on the front side of the duct base, and a duct cavity is formed between the duct cover plate and the duct base. A duct foam is installed in the duct cavity, and the duct foam divides the duct cavity into a first supply air duct, a second supply air duct, and a return air duct.

[0008] A central partition is vertically installed on the front side of the air duct cover, which divides the internal space of the inner liner into an upper storage compartment and a lower storage compartment arranged vertically.

[0009] The bottom of the left evaporator cavity is provided with a first return air outlet, the first return air outlet is communicated with the lower storage compartment, the top of the left evaporator cavity is provided with a first air supply outlet, the first air supply outlet is communicated with the first air supply duct, the air duct cover plate is provided with a plurality of first air outlets located in the lower storage compartment, the first air supply duct is communicated with the lower storage compartment through the first air outlets;

[0010] The air duct cover plate is provided with a second return air outlet located in the upper storage compartment, the second return air outlet is communicated with the bottom of the right evaporator cavity through the return air duct, the top of the right evaporator cavity is provided with a second air supply outlet, the second air supply outlet is communicated with the second air supply duct, the air duct cover plate is provided with a plurality of second air outlets located in the upper storage compartment, the second air supply duct is communicated with the upper storage compartment through the second air outlets.

[0011] Preferably, the bottom of the air duct base is provided with a wind deflector for improving the return air efficiency of the lower storage compartment to the left evaporator cavity.

[0012] Preferably, the second return air outlet is provided with an air inlet grille.

[0013] Preferably, the first air supply outlet is provided with a first air supply fan.

[0014] Preferably, the second air supply outlet is provided with a second air supply fan.

[0015] Preferably, the left evaporator cavity is provided with a refrigeration evaporator.

[0016] Preferably, the right evaporator cavity is provided with a temperature-variable evaporator.

[0017] Preferably, the middle partition plate comprises a bottom plate, the bottom plate is provided with an upper cover, and an intermediate thermal insulation layer is arranged between the bottom plate and the upper cover.

[0018] Preferably, the intermediate thermal insulation layer is a foam or a VIP vacuum insulation plate.

[0019] Compared with the prior art, the refrigerator air duct structure has the following advantages:

[0020] The refrigerator air duct structure can realize independent refrigeration of the upper storage compartment and the lower storage compartment, and the two compartments do not affect each other, thereby solving the problem of mutual flavor mixing of the two compartments arranged above and below in the existing French four-door refrigerator. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Figure 1 is the overall structure of the air duct structure of the present application.

[0023] Figure 2 is the exploded view of the air duct structure of the present application.

[0024] Figure 3 is the structure of the rear side of the air duct foam of the present application.

[0025] Figure 4 is the layout of the evaporator of the existing cross four-door refrigerator.

[0026] Figure 5 is the layout of the evaporator of the existing French four-door refrigerator.

[0027] Figure 6 is the layout of the evaporator of the French four-door refrigerator of the present application.

[0028] In the figure: 1, inner container; 2, air duct base; 3, freezing evaporator; 4, variable temperature evaporator; 5, air duct cover plate; 6, air duct foam; 7, first air supply air duct; 8, second air supply air duct; 9, return air duct; 10, middle partition; 11, upper storage compartment; 12, lower storage compartment; 13, air deflector; 14, first air supply fan; 15, first air outlet; 16, second return air outlet; 17, second air supply fan; 18, second air outlet. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0030] According to the cross smell problem existing in the prior art, the upper and lower arranged two compartments of the French four-door refrigerator are respectively provided with an independent evaporator, and due to the limitation of the installation space height, the two evaporators are arranged left and right, as shown in Figure 6 The preferred embodiment of the present application provides a refrigerator air duct structure to adapt to the two evaporators arranged left and right.

[0031] As shown in Figures 1-3 , the structure includes an inner container 1, an air duct base 2 is fixedly installed in the inner container 1, and an evaporator cavity is formed between the air duct base 2 and the rear side wall of the inner container 1. A partition or a protruding rib is integrally formed in the middle position of the rear side of the air duct base 2 along the vertical direction, and divides the evaporator cavity into left and right arranged independent left and right evaporator cavities. The freezing evaporator 3 is installed in the left evaporator cavity, and the variable temperature evaporator 4 is installed in the right evaporator cavity.

[0032] The front side of the air duct base 2 is provided with an air duct cover plate 5 in a snap-fit manner, and an air duct cavity is formed between the air duct cover plate 5 and the air duct base 2. An air duct foam 6 is arranged in the air duct cavity, and the air duct foam 6 divides the air duct cavity into a first air supply air duct 7, a second air supply air duct 8 and a return air duct 9.

[0033] A middle partition plate 10 is vertically arranged on the front side of the air duct cover plate 5. The middle partition plate 10 comprises a bottom plate and an upper cover arranged on the bottom plate. An intermediate thermal insulation layer is arranged between the bottom plate and the upper cover. The intermediate thermal insulation layer is made of foam or VIP vacuum insulation board, and is used for heat insulation and heat preservation. The middle partition plate 10 divides the internal space of the inner container into an upper storage compartment 11 and a lower storage compartment 12 arranged in a top-bottom manner. A storage drawer is arranged in each storage compartment in a push-pull manner.

[0034] The bottom of the left evaporator cavity is provided with a first return air outlet, and the first return air outlet is communicated with the lower storage compartment 12. In addition, a guide plate 13 is arranged on the bottom of the air duct base 2. The guide plate 13 is used for improving the return air efficiency of the lower storage compartment 12 to the left evaporator cavity and preventing foreign matters from entering the left evaporator cavity. The top of the left evaporator cavity is provided with a first air supply outlet, and a first air supply fan 14 is arranged on the first air supply outlet through a support. The first air supply outlet is communicated with the first air supply air duct 7. A plurality of first air outlets 15 are arranged on the air duct cover plate 5 and located in the lower storage compartment 12. The first air supply air duct is communicated with the lower storage compartment 12 through the first air outlets 15.

[0035] The cold air circulation path of the lower storage compartment 12 is as follows: under the action of the first air supply fan 14, the air in the lower storage compartment 12 enters the left evaporator cavity from the first return air outlet. The refrigeration evaporator 3 generates cold energy, and the cold air sequentially passes through the first air supply outlet and the first air supply air duct 7, and finally enters the lower storage compartment 12 through the first air outlet 15.

[0036] The air duct cover plate 5 is provided with a second return air outlet 16 located in the upper storage compartment 11. An air inlet grille is arranged at the position of the second return air outlet 16 to prevent foreign matters from entering. The second return air outlet 16 is communicated with the bottom of the right evaporator cavity through the return air duct 9. The top of the right evaporator cavity is provided with a second air supply outlet, and a second air supply fan 17 is arranged on the second air supply outlet through a support. The second air supply outlet is communicated with the second air supply air duct 8. A plurality of second air outlets 18 are arranged on the air duct cover plate 5 and located in the upper storage compartment 11. The second air supply air duct 8 is communicated with the upper storage compartment 11 through the second air outlets 18.

[0037] The cold air circulation path of the upper storage compartment 11 is as follows: under the action of the second air supply fan 17, the air in the upper storage compartment 11 enters the return air duct 9 from the second return air outlet 16, and then enters the right evaporator cavity along the return air duct 9. The temperature change evaporator 4 generates cold energy, and the cold air sequentially passes through the second air supply outlet and the second air supply air duct 8, and finally enters the upper storage compartment 11 through the second air outlet 18.

[0038] The freezing evaporator 3 and the variable-temperature evaporator 4 are arranged on the left and right sides, and cooperate with the air duct structure to realize independent refrigeration of the upper storage compartment 11 and the lower storage compartment 12, and the refrigeration is not affected each other, and the problem of mutual flavor mixing of the existing French four-door refrigerator arranged in the upper and lower two compartments is solved.

[0039] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A refrigerator air duct structure comprising an inner container, characterized in that, The inner container is provided with a wind channel base, and an evaporator cavity is formed between the wind channel base and the rear sidewall of the inner container. The rear side of the wind channel base is provided with a partition plate, which divides the evaporator cavity into a left evaporator cavity and a right evaporator cavity arranged side by side. The left evaporator cavity is provided with a refrigeration evaporator, and the right evaporator cavity is provided with a temperature-variable evaporator. The front side of the wind channel base is provided with a wind channel cover plate, and a wind channel cavity is formed between the wind channel cover plate and the wind channel base. The wind channel cavity is provided with a wind channel foam, which divides the wind channel cavity into a first air supply wind channel, a second air supply wind channel and a return air wind channel. The front side of the wind channel cover plate is vertically provided with a middle partition plate, which divides the internal space of the inner container into an upper storage compartment and a lower storage compartment arranged in a vertical manner. The upper storage compartment is a temperature-variable compartment, and the lower storage compartment is a refrigeration compartment. The bottom of the left evaporator cavity is provided with a first return air port, which is in communication with the lower storage compartment. The top of the left evaporator cavity is provided with a first air supply port, which is in communication with the first air supply wind channel. The wind channel cover plate is provided with a plurality of first air outlets located in the lower storage compartment. The first air supply wind channel is in communication with the lower storage compartment through the first air outlets. The wind channel cover plate is provided with a second return air port located in the upper storage compartment. The second return air port is in communication with the bottom of the right evaporator cavity through the return air wind channel. The top of the right evaporator cavity is provided with a second air supply port, which is in communication with the second air supply wind channel. The wind channel cover plate is provided with a plurality of second air outlets located in the upper storage compartment. The second air supply wind channel is in communication with the upper storage compartment through the second air outlets.

2. The refrigerator duct structure according to claim 1, wherein The bottom of the wind channel base is provided with a wind guide plate, which is used to improve the return air efficiency of the lower storage compartment to the left evaporator cavity.

3. The refrigerator duct structure according to claim 1, wherein The second return air port is provided with an air inlet grille.

4. The refrigerator duct structure according to claim 1, wherein The first air supply port is provided with a first air supply fan.

5. The refrigerator duct structure according to claim 1, wherein The second air supply port is provided with a second air supply fan.

6. The refrigerator duct structure according to claim 1, wherein The middle partition plate comprises a bottom plate, an upper cover plate mounted on the bottom plate, and a middle heat insulation layer arranged between the bottom plate and the upper cover plate.

7. The refrigerator duct structure according to claim 6, wherein The middle heat insulation layer is a foam or a VIP vacuum insulation panel.

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