A support structure capable of improving the noise of a centrifugal fan in a refrigerator and a refrigerator thereof

Abstract

The utility model discloses a support structure capable of improving the noise of a centrifugal fan in a refrigerator and a refrigerator thereof, wherein the refrigerator comprises a freezing air duct front plate and a freezing air duct rear cover, the centrifugal fan is installed on the freezing air duct front plate and is located between the freezing air duct front plate and the freezing air duct rear cover, the centrifugal fan comprises spaced claws, a silicone floor mat is installed on each claw, a through hole is formed at the center of the silicone floor mat, a screw column is formed at a position opposite to the silicone floor mat on the freezing air duct front plate, when the centrifugal fan with the silicone floor mat installed is installed on the freezing air duct front plate, the screw column is penetrated and installed in the through hole, a screw is installed in the screw column, and then the centrifugal fan is installed on the freezing air duct front plate. The utility model can improve the support structure of the noise of the centrifugal fan in the refrigerator, can improve the overall noise problem of the refrigerator, and provide users with a quieter and more comfortable refrigerator use experience.

Description

Technical field:

[0001] The utility model relates to a supporting structure capable of improving the noise of a centrifugal fan in a refrigerator and the refrigerator thereof, and belongs to the technical field of refrigerators. Background technology:

[0002] As people's requirements for living standards continue to improve, they are also paying more and more attention to noise issues in life. Refrigerators are indispensable household appliances in modern families, and refrigerators are relatively close to people. The noise of refrigerators has a significant impact on the quality of life of modern people. At the same time, among the components of air-cooled refrigerator noise, one of the most persistent noises is the running noise of the fan inside the refrigerator. High-frequency fan vibration will produce relatively sharp and penetrating noise. At the same time, because the fan runs for a long time and continuously, the fan noise has an important impact on the overall noise of the refrigerator.

[0003] Therefore, how to reduce the noise generated by the fan when the refrigerator is running has become a technical problem that technical personnel in this field need to solve urgently. Utility model content:

[0004] The utility model aims to solve the problems existing in the prior art and provides a support structure capable of improving the noise of a centrifugal fan in a refrigerator and a refrigerator thereof, which can effectively reduce the noise of the refrigeration fan.

[0005] The utility model adopts the following technical scheme: a supporting structure capable of improving the noise of a centrifugal fan in a refrigerator, which is installed on the centrifugal fan, the refrigerator comprising a freezing air duct front plate and a cooling air duct rear cover, the centrifugal fan being installed on the freezing air duct front plate and being located between the freezing air duct front plate and the cooling air duct rear cover, the centrifugal fan comprising spaced apart claws, a silicone floor mat being installed on each of the claws, a through hole being formed at the center of the silicone floor mat, a screw column being formed on a protrusion at a position opposite to the silicone floor mat on the freezing air duct front plate, when the centrifugal fan with the silicone floor mat installed is installed on the freezing air duct front plate, the screw column is penetrated and installed in the through hole, a screw is installed in the screw column, and then the centrifugal fan is installed on the freezing air duct front plate.

[0006] Furthermore, the through hole is in a petal shape.

[0007] Furthermore, the inner diameter of the through hole is B, and the outer diameter of the through hole is A.

[0008] Furthermore, the outer diameter of the screw column is C.

[0009] Furthermore, a gasket is installed between the head of the screw and the silicone floor mat.

[0010] Furthermore, the silicone floor mat includes a middle portion and plate portions located at two ends of the middle portion, and the claws are installed at a position outside the middle portion.

[0011] The utility model also adopts the following technical solution: a refrigerator, comprising the above-mentioned support structure capable of improving the noise of the centrifugal fan in the refrigerator.

[0012] The utility model has the following beneficial effects: the utility model can improve the support structure of the noise of the centrifugal fan in the refrigerator, can improve the overall noise problem of the refrigerator, and provide users with a quieter and more comfortable refrigerator use experience. Description of the drawings:

[0013] Figure 1 It is a schematic diagram of the refrigeration air duct front plate, the cold air duct rear cover and the centrifugal fan.

[0014] Figure 2 This is a schematic diagram of the installation of centrifugal fans and silicone floor mats.

[0015] Figure 3 This is a partial cross-sectional view of the centrifugal fan and silicone floor mat after installation.

[0016] Figure 4 This is a cross-sectional view of the centrifugal fan and silicone floor mat after installation.

[0017] Figure 5 This is a schematic diagram of a silicone floor mat.

[0018] Figure 6 Another schematic diagram of a silicone floor mat.

[0019] Figure 7 This is a schematic diagram of the screw column. Specific implementation method:

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] The utility model can improve the support structure of the centrifugal fan noise in the refrigerator, which is installed on the centrifugal fan 3. The refrigerator includes a freezing air duct front plate 1 and a cooling air duct rear cover 2, and the centrifugal fan 3 is installed on the freezing air duct front plate 1 and located between the freezing air duct front plate 1 and the cooling air duct rear cover 2. The centrifugal fan 3 includes three spaced claws 30, and a silica gel floor mat 4 is installed on each claw 30.

[0022] The silicone floor mat 4 includes a middle portion 40 and plate portions 41 located at two ends of the middle portion 40, and the claws 30 are installed at the outer side of the middle portion 40. A petal-shaped through hole 42 is formed at the center of the silicone floor mat 4.

[0023] A screw column 10 is formed on the front plate 1 of the refrigerating air duct at a position opposite to the silicone floor mat 4. When the centrifugal fan 3 with the silicone floor mat 4 is installed on the front plate 1 of the refrigerating air duct, the screw column 10 is penetrated and installed in the petal-shaped through hole 42. Screws 6 are installed in the screw column 10 to install the centrifugal fan 3 on the front plate 1 of the refrigerating air duct. In order to improve the stability of the installation, a gasket 7 is installed between the head of the screw 6 and the silicone floor mat 4.

[0024] The cold air duct rear cover 2 is mounted on the freezing air duct front plate 1 by snapping, and an air duct is formed between the freezing air duct front plate 1 and the cold air duct rear cover 2. After the air duct assembly is installed, the centrifugal fan 3 is powered on to complete the operation of the centrifugal fan, realizing the basic function of the air duct assembly to suck air from the back and blow air to the front.

[0025] In the support structure of the utility model that can improve the noise of the centrifugal fan in the refrigerator, the inner diameter of the petal-shaped through hole 42 is B, and the outer diameter is A. The utility model adjusts the interference between the screw column 10 and the silicone floor mat 4 by controlling the inner diameter B of the inner circle, the outer diameter A of the outer circle and the outer diameter C of the screw column 10. By controlling the appropriate interference, it is ensured that the centrifugal fan will not cause the resonance problem between the front plate 1 of the refrigeration duct and the centrifugal fan 3 during operation due to the insufficient shock absorption effect of the silicone floor mat 4. By preventing the resonance between the front plate 1 of the refrigeration duct and the centrifugal fan 3, the refrigerator noise can be significantly improved.

[0026] The utility model can improve the support structure of the centrifugal fan noise in the refrigerator, and the principle is as follows:

[0027] 1. Through the 12V power input, the centrifugal fan 3 is started to move, so as to suck air from the back of the air duct component and blow air into the air duct, thereby realizing the basic air supply function of the air duct.

[0028] 2. During the operation of the refrigeration air duct assembly, in addition to the noise generated by the operation of the centrifugal fan 3 itself, because the centrifugal fan 3 is fixed to the screw column 10 on the refrigeration air duct front plate 1 by screws 6 and gaskets 7, the operation of the centrifugal fan 3 generates centrifugal vibration of the fan, which in turn drives the resonance of the refrigeration air duct front plate 1, causing noise problems caused by resonance.

[0029] 3. The silica gel floor mat 4 installed on the centrifugal fan 3 has the function of significantly reducing the resonance between the centrifugal fan 3 and the front plate 1 of the refrigeration air duct.

[0030] 4. By controlling the inner diameter B of the inner ring of the silicone floor mat 4, the outer diameter A of the outer ring and the outer diameter C of the screw column 10, the refrigerator noise experiment was carried out in groups. The initial experimental conditions were A>C, B>C. By controlling the outer diameter C of the screw column 10, the interference between the inner diameter B of the screw column 10 and the outer diameter A of the silicone floor mat 4 was controlled to carry out the refrigerator noise experiment. There were three groups of experiments in total. For detailed experimental data, please see Table 1 below

[0031]

[0032]

[0033] Table 1

[0034] 5. From the above experiments, we can know that the duct noise with interference is about 1dB lower than that without interference. Reasonable interference has a good ability to reduce the noise of the refrigeration fan.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A support structure capable of improving the noise of a centrifugal fan in a refrigerator, the support structure being installed on a centrifugal fan (3), the refrigerator comprising a freezing air duct front plate (1) and a cooling air duct rear cover (2), the centrifugal fan (3) being installed on the freezing air duct front plate (1) and being located between the freezing air duct front plate (1) and the cooling air duct rear cover (2), characterized in that: The centrifugal fan (3) includes spaced apart claws (30), and a silicone floor mat (4) is installed on each of the claws (30). A through hole (42) is formed at the center of the silicone floor mat (4). A screw column (10) is formed on the front plate (1) of the refrigeration duct at a position opposite to the silicone floor mat (4). When the centrifugal fan (3) installed with the silicone floor mat (4) is installed on the front plate (1) of the refrigeration duct, the screw column (10) is penetrated and installed in the through hole (42), and a screw (6) is installed in the screw column (10) to thereby install the centrifugal fan (3) on the front plate (1) of the refrigeration duct.

2. The support structure capable of improving the noise of a centrifugal fan in a refrigerator according to claim 1, characterized in that: The through hole (42) is in the shape of a petal.

3. The support structure capable of improving the noise of the centrifugal fan in the refrigerator according to claim 2, characterized in that: The inner diameter of the through hole (42) is B, and the outer diameter is A.

4. The support structure capable of improving the noise of a centrifugal fan in a refrigerator according to claim 3, characterized in that: The outer diameter of the screw column (10) is C.

5. The support structure capable of improving the noise of a centrifugal fan in a refrigerator according to claim 1, characterized in that: A gasket (7) is installed between the head of the screw (6) and the silicone floor mat (4).

6. The support structure capable of improving the noise of a centrifugal fan in a refrigerator according to claim 1, characterized in that: The silica gel floor mat (4) comprises a middle portion (40) and plate portions (41) located at two ends of the middle portion (40), and the claws (30) are installed at a position outside the middle portion (40).

7. A refrigerator, characterized in that: The invention comprises a supporting structure capable of improving the noise of a centrifugal fan in a refrigerator as described in any one of claims 1 to 5.

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