A refrigeration and freezing device

Abstract

An embodiment of the present invention discloses a refrigeration and freezing device, which relates to the technical field of refrigeration and freezing devices. It is used to solve the problem in the related art that the fan of the refrigeration and freezing device generates large vibration noise during operation. The refrigeration and freezing device includes a storage compartment, a refrigeration duct connected to the storage compartment, a fan for driving air to circulate between the refrigeration duct and the storage compartment, and a vibration damping device, the vibration damping device includes a first vibration damping pad, the first vibration damping pad is arranged on the air duct wall of the refrigeration duct, the fan includes a connecting foot, the connecting foot is clamped to the first vibration damping pad through a first clamping structure, and the first vibration damping pad separates the connecting foot from the air duct wall. The present invention can be used for vibration reduction and noise reduction of fans in refrigeration and freezing devices.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration and freezing device structures, and in particular to a refrigeration and freezing device. Background Art

[0002] Refrigeration and freezing devices such as refrigerators typically use fans to circulate air between the refrigeration duct and the storage compartment to cool the storage compartment. The fan is fixed to the duct wall of the refrigeration duct and usually generates vibration when working. How to reduce the vibration transmission between the fan and the duct wall has become an urgent problem to be solved in the industry.

[0003] Figure 1 The figure shows a fan fixing structure of a refrigeration and freezing device in the related art, including a fan bracket 01, a fan 02 connected to the fan bracket 01 (the driving motor of the fan 02), and a vibration-damping pad 03. The vibration-damping pad 03 is arranged between the fan bracket 01 and the air duct wall 04. The fan bracket 01 is threadedly connected to the air duct wall 04 by a bolt 05 passing through the vibration-damping pad 03.

[0004] The inventors found that the fan fixing structure in the related art, such as Figure 1 As shown, the vibration generated by the fan 02 during operation is transmitted to the air duct wall 04 through the fan bracket 01 and the bolt 05, and then transmitted to the entire box body of the refrigeration and freezing device through the air duct wall 04, thereby causing the fan 02 of the refrigeration and freezing device to generate greater vibration noise when working, reducing the user experience. Summary of the Invention

[0005] An embodiment of the present invention provides a refrigeration and freezing device, which is used to solve the problem in the related art that a fan of the refrigeration and freezing device generates large vibration noise during operation.

[0006] To achieve the above-mentioned objectives, in a first aspect, an embodiment of the present invention provides a refrigeration and freezing device, comprising a storage compartment, a refrigeration duct connected to the storage compartment, a fan for driving air to circulate between the refrigeration duct and the storage compartment, and a vibration damping device, the vibration damping device comprising a first vibration damping pad, the first vibration damping pad being arranged on the duct wall of the refrigeration duct, the fan comprising a connecting foot, the connecting foot being clamped to the first vibration damping pad through a first clamping structure, and the first vibration damping pad separating the connecting foot from the duct wall.

[0007] The freezing and refrigeration device provided by the embodiment of the present invention has a first vibration-damping pad arranged on the air duct wall of the refrigeration air duct, and the connecting foot is clamped to the first vibration-damping pad through a first clamping structure, and the first vibration-damping pad separates the connecting foot from the air duct wall. In this way, during installation, the fan can be installed by clamping, and there is no need to install it by rigid connection with the air duct wall through fasteners. Then, when the fan is working, the fasteners can be prevented from transmitting the vibration of the fan to the air duct wall, and the first vibration-damping pad can better isolate the vibration generated by the fan from the air duct wall, thereby greatly reducing the vibration noise of the fan, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0009] Figure 1 The present invention relates to a mounting structure for a fan and an air duct wall in a refrigeration device in the related art.

[0010] Figure 2 is a front view of a refrigerator in an embodiment of the present invention;

[0011] Figure 3 for Figure 1 AA section view in;

[0012] Figure 4 This is a front view of the assembly of the fan and the air duct wall in the refrigerator according to an embodiment of the present invention;

[0013] Figure 5 A partial cross-sectional view of the connection between the connecting leg of the fan and the air duct wall in an embodiment of the present invention;

[0014] Figure 6 Schematic diagram of the structure of the vibration reduction device in some embodiments of the present invention (with a first vibration reduction pad);

[0015] Figure 7 Schematic diagram of the structure of the air duct wall in some embodiments of the present invention;

[0016] Figure 8 Schematic diagram of the connection between the fan connecting foot and the vibration reduction device in some embodiments of the present invention;

[0017] Figure 9 Schematic diagram of the connection between the fan connecting foot and the vibration reduction device in some embodiments of the present invention (from another perspective);

[0018] Figure 10Schematic diagram of the structure of the connection between the connecting foot of the fan and the air duct wall in some embodiments of the present invention;

[0019] Figure 11 Schematic diagram of the structure of the connection between the connecting foot of the fan and the air duct wall in some embodiments of the present invention;

[0020] Figure 12 A schematic diagram of the structure of the assembly of a fan and an air duct wall in a refrigerator in some embodiments of the present invention;

[0021] Figure 13 Schematic diagram of the structure of the vibration damping device in some embodiments of the present invention (including a first vibration damping pad and a second vibration damping pad);

[0022] Figure 14 Schematic diagram of the connection between the fan and the vibration reduction device in some embodiments of the present invention;

[0023] Figure 15 Schematic diagram of the connection between the fan and the air duct wall in some embodiments of the present invention;

[0024] Figure 16 for Figure 15 Side view in;

[0025] Figure 17 Schematic diagram of the structure of the vibration reduction device in some embodiments of the present invention (including a first vibration reduction pad and a vibration reduction support platform);

[0026] Figure 18 Schematic diagram of the connection between the fan and the vibration reduction device in some embodiments of the present invention;

[0027] Figure 19 Schematic diagram of the structure of the air duct wall in some embodiments of the present invention;

[0028] Figure 20 This is a partially enlarged view of the second connecting socket in some embodiments of the present invention. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0033] The refrigeration and freezing device provided in the embodiment of the present invention may be a refrigerator, or may be a refrigeration cabinet, a display cabinet, a medicine refrigerator, or other refrigeration and freezing device, which is not specifically limited here.

[0034] The principle of the refrigeration and freezing device of the present invention is described below using a refrigerator as an example. The structures of other refrigeration and freezing devices may be specifically configured with reference to the structure of the refrigerator embodiment.

[0035] like Figure 2 and Figure 3 As shown, the refrigerator in the embodiment of the present invention includes a storage compartment 1, a cooling air duct 2 communicating with the storage compartment 1, and a fan 4 for driving air to circulate between the cooling air duct 2 and the storage compartment 1. When the refrigerator is in operation, the fan 4 draws air from the storage compartment 1 into the cooling air duct 2. After passing through the evaporator 5, the air is converted into cold air, flows along the cooling air duct 2, and finally re-enters the storage compartment 1 through the air outlet to cool the stored items.

[0036] like Figure 4 and Figure 5 As shown, the refrigerator also includes a vibration damping device 6, which includes a first vibration damping pad 61. The first vibration damping pad 61 is arranged on the air duct wall 3 of the refrigeration air duct 2. The fan 4 includes a connecting foot 41. The connecting foot 41 is clamped to the first vibration damping pad 61 through a first clamping structure 7, and the first vibration damping pad 61 separates the connecting foot 41 from the air duct wall 3.

[0037] The fan 4 can be completely located in the cooling air duct 2, and the connecting foot 41 is connected to the inner surface of the air duct wall 3 (such as Figure 3 and Figure 4 As shown), the fan blades of the fan 4 can also be located in the cooling air duct 2, and the other components are located outside the cooling air duct 2, and the connecting foot 41 of the fan 4 is connected to the outer surface of the air duct wall 3. Figure 4 As shown, the air duct wall 3 can be an air duct plate.

[0038] In the above refrigerator, Figure 5 As shown, since the first vibration damping pad 61 is arranged on the air duct wall 3 of the refrigeration air duct 2, the connecting foot 41 is clamped to the first vibration damping pad 61 through the first clamping structure 7, and the first vibration damping pad 61 separates the connecting foot 41 from the air duct wall 3. In this way, during installation, the fan 4 can be installed by clamping, and there is no need to install it by rigidly connecting it to the air duct wall 3 through fasteners (such as bolts, etc.). Then, when the fan 4 is working, the fasteners can be prevented from transmitting the vibration of the fan 4 to the air duct wall 3, and the first vibration damping pad 61 can better separate the vibration generated by the fan 4 from the air duct wall 3, thereby greatly reducing the vibration noise of the fan 4, thereby improving the user experience.

[0039] In the above embodiment, the positional relationship between the connecting foot 41 and the first vibration damping pad 61 is not unique, for example, it can be as follows: Figure 6 、 Figure 8 and Figure 9 As shown, a mounting groove 611 is provided on the side surface b of the first vibration damping pad 61 (that is, the surface of the first vibration damping pad 61 extending along the thickness direction X thereof). Figure 5 As shown, the connecting foot 41 extends into the mounting groove 611 and is engaged with the first vibration damping pad 61 through the first engaging structure 7. In addition, the positional relationship between the connecting foot 41 and the first vibration damping pad 61 can also be as follows: Figure 10 As shown, the connecting leg 41 is provided on the end face of the first vibration-damping pad 61 along the thickness direction X thereof and away from the air duct wall 3, and is engaged with the first vibration-damping pad 61 via a first engaging structure 7. The first engaging structure 7 includes a buckle 73 and a positioning slot 74. The buckle 73 is provided on the connecting leg 41, and the positioning slot 74 is provided on the side face of the first vibration-damping pad 61. The buckle 73 engages with the positioning slot 74. Compared to the embodiment in which the connecting leg 41 is provided on the end face of the first vibration-damping pad 61, in the embodiment in which the connecting leg 41 cooperates and extends into the mounting slot 611, the mounting slot 611 can wrap around the connecting leg 41, thereby isolating the vibration of the connecting leg 41 in multiple directions, better reducing the vibration transmission between the connecting leg 41 and the air duct wall 3, and thus better reducing the vibration noise of the fan 4 during operation.

[0040] The first clamping structure 7 is not unique, and can be, for example, the following structure: Figure 5 and Figure 6 As shown, the first engaging structure 7 includes an engaging hole 71 and an engaging column 72. The engaging hole 71 is formed on the wall of the mounting groove 611, and the engaging column 72 is provided on the connecting leg 41. The engaging column 72 cooperates with the engaging hole 71 to engage the connecting leg 41 with the first vibration damping pad 61. Alternatively, the first engaging structure 7 may be configured as follows: the first engaging structure 7 includes a first engaging tooth and a second engaging tooth. The first engaging tooth is provided on the wall of the mounting groove 611, and the second engaging tooth is provided on the connecting leg 41. The first engaging tooth engages with the second engaging tooth. Compared with the embodiment in which the first clamping structure 7 includes the first clamping tooth and the second clamping tooth, in the embodiment in which the first clamping structure 7 includes the clamping hole 71 and the clamping column 72, the first vibration damping pad 61 only needs to have the clamping hole 71 on the groove wall of the installation groove 611, and there is no need to make clamping teeth in the installation groove 611. In this way, it is not restricted by the width of the installation groove 611 (that is, the size of the installation groove 611 in the thickness direction of the first vibration damping pad 61), making the production of the first vibration damping pad 61 relatively simple, which is conducive to reducing the production cost.

[0041] In the embodiment where the first clamping structure 7 includes a clamping hole 71 and a clamping column 72, in order to make the connection between the connecting foot 41 and the first vibration damping pad 61 more firmly clamped, as shown in FIG. Figure 5 As shown, the latch hole 71 includes a first latch hole 711 and a second latch hole 712, which are respectively provided on two opposite walls of the mounting groove 611; the latch column 72 includes a first latch column 721 and a second latch column 722, which respectively correspond to the first latch hole 711 and the second latch hole 712. Through the above arrangement, during the operation of the fan 4, the force applied to the connecting leg 41 can be more balanced, preventing the fan 4 from deflecting due to the deflection of the connecting leg 41. This not only ensures the balance of the fan 4, but also makes the connection between the connecting leg 41 of the fan 4 and the first vibration damping pad 61 more firmly.

[0042] The positions of the first clamping hole 711 and the second clamping hole 712 are not unique. For example, Figure 5 and Figure 6As shown, the first latch hole 711 and the second latch hole 712 can be respectively provided on two opposite groove walls of the mounting groove 611 along the thickness direction of the first vibration damping pad 61. Alternatively, the first latch hole 711 and the second latch hole 712 can also be respectively provided on two opposite groove walls of the mounting groove 611 along a first direction, where the first direction is a direction perpendicular to the thickness direction of the first vibration damping pad 61. Compared with the case where the first latch hole 711 and the second latch hole 712 are respectively opened on two groove walls of the mounting groove 611 that are opposite to each other along the first direction, when the first latch hole 711 and the second latch hole 712 are opened on two groove walls of the mounting groove 611 that are opposite to each other along the thickness direction of the first vibration damping pad 61, the sizes of the first latch hole 711 and the second latch hole 712 are not limited by the size of the mounting groove 611 in the thickness direction of the first vibration damping pad 61. The first latch hole 711 and the second latch hole 712 can be made larger according to actual needs, thereby making the clamping connection between the first latch hole 711 and the first clamping column 721, and the clamping connection between the second latch hole 712 and the second clamping column 722 more secure.

[0043] In the first vibration damping pad 61, the first clamping hole 711 and the second clamping hole 712 can be through holes (such as Figure 5 and Figure 6 As shown), it can also be a blind hole, which is not specifically limited here. Figure 5 As shown, when the first clamping hole 711 and the second clamping hole 712 are through holes, the depth of the first clamping hole 711 is greater than the length of the first clamping column 721, and the depth of the second clamping hole 712 is greater than the length of the second clamping column 722. This can prevent the first clamping column 721 and the second clamping column 722 from contacting and transmitting vibrations with other components (such as the first connecting seat), thereby ensuring that the first vibration damping pad 61 reduces the effect of vibration transmission between the connecting foot 41 and the air duct wall 3.

[0044] In the refrigerator provided in the embodiment of the present invention, the first vibration damping pad 61 is arranged on the air duct wall 3 in a different manner. For example, the arrangement may be as follows: Figure 7 As shown, the air duct wall 3 includes a wall surface 31 and a first connecting seat 32 provided on the wall surface 31. The first connecting seat 32 has a fixed card slot 321. Figure 5 As shown, the first vibration damping pad 61 is interference fit in the fixing slot 321 and separates the connecting leg 41 from the first connecting seat 32. Figure 10 As shown, the first vibration damping pad 61 can also be directly connected to the wall surface 31 of the air duct wall 3 via fasteners (e.g., screws). Compared to the embodiment in which the first vibration damping pad 61 is directly connected to the wall surface 31 of the air duct wall 3 via fasteners, the embodiment in which the first vibration damping pad 61 is interference fit within the fixing slot 321 of the first connecting seat 32 makes installation of the first vibration damping pad 61 more convenient and quick, saving time in fastener installation. Furthermore, the first vibration damping pad 61 is disposed on the first connecting seat 32, which is less likely to cause damage to the wall surface 31 of the air duct wall 3.

[0045] The position of the fixing slot 321 on the first connecting seat 32 is not unique. Figure 7 As shown, the fixing slot 321 can be opened on the side surface a of the first connecting seat 32 (that is, the surface of the first connecting seat 32 extending along its height direction Y), as shown in FIG. Figure 5 As shown, a mounting groove 611 is provided on the side of the first vibration damping pad 61, and the orientation of the mounting groove 611 is the same as that of the fixed card slot 321. The connecting foot 41 extends into the mounting groove 611 and is engaged with the first vibration damping pad 61 through the first card structure 7. Figure 11 As shown, the fixing slot 321 can also be provided on the end surface of the first connecting seat 32 away from the wall surface 31. The fixing slot 321 has a dovetail-shaped cross-section. The first vibration damping pad 61 extends into the fixing slot 321 and has an interference fit with the fixing slot 321. The connecting foot 41 is provided on the end surface of the first vibration damping pad 61 away from the fixing slot 321 and is engaged with the first vibration damping pad 61 via the first engaging structure 7. Compared to when the fixing slot 321 is provided on the end surface of the first connecting seat 32, when the fixing slot 321 is provided on the side surface of the first connecting seat 32, the first connecting seat 32 can better secure the first vibration damping pad 61. The first vibration damping pad 61 is provided in the fixing slot 321, and the groove wall of the fixing slot 321 can wrap around the first vibration damping pad 61, better limiting the vibration amplitude of the first vibration damping pad 61 driven by the connecting foot 41, thereby facilitating the reduction of vibration transmission between the connecting foot 41 and the first connecting seat 32.

[0046] In the vibration damping device 6 , the first vibration damping pad 61 may be made of rubber material or other vibration damping materials, which are not specifically limited here.

[0047] like Figure 5 As shown, the fan 4 further includes a fan body 42 , and the connecting legs 41 are arranged at the periphery of the fan body 42 .

[0048] In order to ensure the balance of the fan 4 during operation, Figure 12 、 Figure 13 and Figure 14 As shown, the vibration damping device 6 further includes a second vibration damping pad 62. The first vibration damping pad 61 is located at the periphery of the second vibration damping pad 62 and is connected to the second vibration damping pad 62. The second vibration damping pad 62 is used to support the fan body 42. By providing the second vibration damping pad 62, the fan body 42 can be supported. When the fan 4 is operating, the second vibration damping pad 62 can limit the vibration of the fan body 42, reducing the shaking of the fan body 42 caused by vibration, thereby ensuring the balance of the fan 4 during operation.

[0049] The structure of the second vibration damping pad 62 is not unique, and can be, for example, the following structure: Figure 13As shown, the second vibration damping pad 62 includes a bottom wall 621 and a side wall 622 provided at the periphery of the bottom wall 621. The bottom wall 621 and the side wall 622 form a limiting space 623. Figure 14 As shown, the fan body 42 extends into the limiting space 623 and abuts against the bottom wall 621 and the side wall 622. In addition, the second vibration damping pad 62 can also be a vibration damping pad without the side wall 622, and the second vibration damping pad 62 abuts against the bottom surface of the fan body 42 (the side surface of the fan body 42 close to the wall 31 of the air duct wall 3). Compared with the second vibration damping pad 62 without the side wall 622, when the second vibration damping pad 62 includes the bottom wall 621 and the side wall 622, the bottom wall 621 and the side wall 622 can limit the axial and radial vibrations of the fan body 42. In this way, the second vibration damping pad 62 can better limit the vibration of the fan body 42, and can better reduce the shaking of the fan body 42 caused by vibration, which is more conducive to ensuring the balance of the fan 4 during operation.

[0050] In the embodiment where the second vibration-damping pad 62 includes a bottom wall 621 and side walls 622, the material hardness of the bottom wall 621 is greater than the material hardness of the side walls 622 to ensure that the second vibration-damping pad 62 can both ensure the balance of the fan 4 and effectively isolate the fan 4 from vibration. Setting the material hardness of the bottom wall 621 higher provides better support for the fan body 42, ensuring the balance of the fan 4 during operation, making the fan body 42 more stable and preventing significant shaking. Setting the material hardness of the side walls 622 lower allows them to wrap around the fan body 42 to reduce vibration transmission and effectively isolate the fan 4 from vibration.

[0051] Among them, the material of the bottom wall 621 can be a hard material such as PP (Polypropylene) or PS (Polystyrene); the material of the side wall 622 can be a vibration-absorbing and isolating material such as rubber; the bottom wall 621 and side wall 622 of the second vibration damping pad 62 can be integrally formed by two-color injection molding or co-extrusion process.

[0052] In order to facilitate the connection between the connecting foot 41 of the fan 4 and the first vibration damping pad 61, as shown in FIG. Figure 13 and Figure 14As shown, a first avoidance opening 6221 is formed on the side wall 622, and the connecting leg 41 extends from the first avoidance opening 6221 and engages with the first vibration damping pad 61 via the first engaging structure 7. By providing the first avoidance opening 6221, when the fan body 42 extends into the limiting space 623, the connecting leg 41 can extend from the first avoidance opening 6221 and engage with the first vibration damping pad 61. This not only facilitates the engagement of the connecting leg 41 of the fan 4 with the first vibration damping pad 61, but also eliminates the need for the connecting leg 41 to be staggered with the side wall 622 along the thickness direction of the first vibration damping pad 61, thereby freeing the connection position of the connecting leg 41 on the fan body 42.

[0053] Among them, Figure 13 As shown, when the side surface of the first vibration-damping pad 61 is provided with a mounting groove 611 , the notch of the mounting groove 611 is opposite to the first avoidance opening 6221 .

[0054] In order to facilitate the wiring harness of the fan 4 to pass through the limiting space 623 of the second vibration damping pad 62 and to fix the wiring harness, as shown in FIG. Figure 12 and Figure 13 As shown, a second avoidance opening 6222 is further provided on the side wall 622. A wiring harness slot 6211 is provided along the circumference of the bottom wall 621 at a position corresponding to the second avoidance opening 6222. The wiring harness of the fan 4 passes through the second avoidance opening 6222 and engages with the wiring harness slot 6211. By providing the second avoidance opening 6222, after the fan 4 is installed with the first and second vibration damping pads 61, 62, the wiring harness of the fan 4 can pass through the second avoidance opening 6222 and engage with the wiring harness slot 6211. This prevents the wiring harness of the fan 4 from moving, thereby avoiding the problem of abnormal noise caused by the moving wiring harness scraping against the blades of the fan 4.

[0055] In the vibration damping device 6, the second vibration damping pad 62 can be made of rubber material or other vibration damping materials, which are not specifically limited here. The second vibration damping pad 62 can be integrally formed with the first vibration damping pad 61 (such as Figure 13 As shown), it can also be designed in a split manner, which is not specifically limited here.

[0056] In order to further reduce the vibration transmission between the connecting foot 41 and the air duct wall 3, as shown in FIG. Figure 15 、 Figure 16 and Figure 18 As shown, the vibration reduction device 6 further includes a vibration reduction support platform 63, on which the first vibration reduction pad 61 is disposed, and the vibration reduction support platform 63 is disposed on the air duct wall 3. The provision of the vibration reduction support platform 63, in conjunction with the first vibration reduction pad 61, further reduces the vibration transmission between the connecting leg 41 and the air duct wall 3, thereby improving the vibration isolation effect and further reducing the vibration noise of the fan 4.

[0057] The vibration reduction support platform 63 may be arranged on the air duct wall 3 in any manner. For example, the arrangement may be as follows: Figure 19 and Figure 20 As shown, the air duct wall 3 includes a wall surface 31 and a second connecting seat 33 provided on the wall surface 31. Figure 16 As shown, the vibration-damping support platform 63 is disposed on the second connecting seat 33 and is clamped to the second connecting seat 33 via the second clamping structure 8. In addition, the vibration-damping support platform 63 can also be directly connected to the wall surface 31 of the air duct wall 3 via fasteners. Compared with the embodiment in which the vibration-damping support platform 63 is directly connected to the wall surface 31 of the air duct wall 3 via fasteners, the embodiment in which the vibration-damping support platform 63 is disposed between the second connecting seat 33 and the first vibration-damping pad 61 is installed by clamping, which is more convenient and quick to install and saves time for installing fasteners. In addition, the vibration-damping support platform 63 is disposed on the second connecting seat 33, which is less likely to cause damage to the wall surface 31 of the air duct wall 3.

[0058] The second clamping structure 8 can be as follows: Figure 16 、 Figure 18 and Figure 19 As shown, the second engaging structure 8 includes a latching tooth 81 and a third latching hole 82. The second connecting seat 33 is provided with an insertion hole 331. The latching tooth 81 is provided on the vibration-damping support platform 63. The third latching hole 82 is provided on the wall of the insertion hole 331. The vibration-damping support platform 63 is inserted into the insertion hole 331, and the latching tooth 81 is engaged with the third latching hole 82. Since the vibration-damping support platform 63 is inserted into the insertion hole 331 and then the latching tooth 81 is engaged with the third latching hole 82, the wall of the insertion hole 331 can limit the vibration-damping support platform 63. This ensures that the engagement between the vibration-damping support platform 63 and the second connecting seat 33 is more secure, and the vibration-damping support platform 63 is less likely to deflect, thereby ensuring the balance of the fan 4 during operation.

[0059] In the second engaging structure 8, the positions of the latching teeth 81 and the third engaging holes 82 can also be reversed, that is, the latching teeth 81 are disposed on the wall of the insertion hole 331, and the third engaging holes 82 are formed on the vibration-damping support platform 63. The effect achieved after the positions of the latching teeth 81 and the third engaging holes 82 are reversed is the same as before, and will not be further described here.

[0060] In order to make the connection between the latch tooth 81 and the third latch hole 82 more secure, the latch tooth 81 is made of a hard material, such as polypropylene (PP), so that the latch tooth 81 is not easy to fall out of the third latch hole 82, making the connection between the latch tooth 81 and the third latch hole 82 more secure, and thus making the connection between the vibration damping support platform 63 and the second connecting seat 33 more secure.

[0061] In order to facilitate the insertion of the vibration-damping support platform 63 into the insertion hole 331, as shown in FIG. Figure 17 As shown, the vibration-damping support platform 63 is truncated, and the diameter of the end of the vibration-damping support platform 63 away from the first vibration-damping pad 61 is larger than the diameter of the end closer to the first vibration-damping pad 61. This design allows the vibration-damping support platform 63 to be inserted into the insertion hole 331 more quickly, thereby improving the assembly efficiency of the vibration-damping support platform 63 and the second connecting base 33.

[0062] In the vibration damping device 6, the vibration damping support platform 63 can be made of rubber material or other vibration damping materials, which are not specifically limited here; the vibration damping support platform 63 can be integrally formed with the first vibration damping pad 61 (such as Figure 17 As shown), it can also be designed in a split manner, which is not specifically limited here.

[0063] Table 1 Comparison of fan noise sound power test results of different design schemes

[0064]

[0065] To better illustrate the vibration reduction effect of the vibration reduction device 6 in the embodiment of the present invention, noise and sound power comparison tests were conducted on the fans in several embodiments of the present invention, ordinary split fans, and new integrated fans at 1300 rpm and 1500 rpm. The noise and sound power test results are shown in Table 1. At the same time, vibration level comparison tests were conducted on the fans in several embodiments of the present invention, ordinary split fans, and new integrated fans at a fan speed of 1500 rpm. The test results are shown in Table 2.

[0066] Among them, Figure 6 As shown, the vibration reduction structure 1# is a solution that uses the first vibration reduction pad 61 for vibration isolation in the embodiment of the present invention; Figure 13 As shown, the vibration reduction structure 2# is a solution of using the first vibration reduction pad 61 and the second vibration reduction pad 62 for vibration isolation in the embodiment of the present invention; Figure 17 As shown, the vibration reduction structure 3# is a vibration isolation solution using a first vibration reduction pad 61 and a vibration reduction support platform 63 in the embodiment of the present invention. The fans in the above embodiments of the present invention are all split fans. In Tables 1 and 2, the test data of the split fan and the integrated fan are obtained when the split fan is connected to the air duct wall by fasteners.

[0067] As shown in Table 1, compared with ordinary split-type fans, the noise levels of several design schemes using vibration reduction structure 1#, vibration reduction structure 2#, and vibration reduction structure 3# are all reduced. Among them, the most effective vibration reduction structure 3# has a noise reduction of more than 1dB. The fan noise level is close to that of the higher-cost new integrated fan, and the noise reduction effect is obvious.

[0068] Table 2 Comparison of duct vibration values ​​of different design schemes at fan speed of 1500 rpm

[0069]

[0070] As shown in Table 2, under stable operation, the vibration value of the ordinary split fan is relatively large, reaching 0.76. After adopting the vibration reduction structure 1#, vibration reduction structure 2#, and vibration reduction structure 3# of the present application, the vibration values ​​are improved to 0.51 / 0.32 / 0.24 respectively. Among them, the vibration level of the vibration reduction structure 3# is improved by 68% compared with the vibration value of the ordinary split fan, and the vibration reduction effect is obvious.

[0071] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0072] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A refrigerator-freezer comprising a storage compartment, a refrigeration duct communicating with the storage compartment, a fan for driving air to circulate between the refrigeration duct and the storage compartment, and a vibration damping device, wherein: The vibration damping device includes a first vibration damping pad, which is arranged on the air duct wall of the cooling air duct. The fan includes a connecting foot, which is clamped to the first vibration damping pad via a first clamping structure, and the first vibration damping pad separates the connecting foot from the air duct wall. The fan is entirely located in the cooling air duct, and the connecting foot is connected to the inner surface of the air duct wall. The vibration reduction device further includes a vibration reduction support platform, the first vibration reduction pad is arranged on the vibration reduction support platform, and the vibration reduction support platform is arranged on the air duct wall; A mounting groove is provided on the side surface of the first vibration damping pad, the connecting leg extends into the mounting groove and is clamped to the first vibration damping pad via the first clamping structure; The first clamping structure includes a clamping hole and a clamping column, wherein the clamping hole is formed on the wall of the mounting slot, and the clamping column is provided on the connecting leg, and the clamping column cooperates with the clamping hole to clamp the connecting leg to the first vibration damping pad; The air duct wall includes a wall surface and a second connecting seat provided on the wall surface, the vibration-damping support platform is provided on the second connecting seat and is clamped with the second connecting seat via a second clamping structure; The second clamping structure includes a clamping tooth and a third clamping hole. A socket is provided on the second connecting seat. The clamping tooth is arranged on one of the hole walls of the vibration-damping support platform and the socket. The third clamping hole is provided on the other of the hole walls of the vibration-damping support platform and the socket. The vibration-damping support platform is inserted into the socket, and the clamping tooth is clamped with the third clamping hole.

2. The refrigerator-freezer according to claim 1, wherein: The card hole includes a first card hole and a second card hole, and the first card hole and the second card hole are respectively opened on the two opposite slot walls of the installation slot; the card column includes a first card column and a second card column, and the first card column and the second card column respectively correspond to the first card hole and the second card hole one by one.

3. The refrigerator-freezer according to claim 2, wherein: The first clamping hole and the second clamping hole are respectively opened on two opposite groove walls of the installation groove along the thickness direction of the first vibration damping pad.

4. The refrigerator-freezer according to any one of claims 1 to 3, characterized in that: The fan also includes a fan body, and the connecting foot is arranged at the periphery of the fan body; the vibration damping device also includes a second vibration damping pad, the first vibration damping pad is located at the periphery of the second vibration damping pad and is connected to the second vibration damping pad, and the second vibration damping pad is used to support the fan body.

5. The refrigerator-freezer according to claim 4, characterized in that: The second vibration damping pad includes a bottom wall and side walls arranged at the periphery of the bottom wall. The bottom wall and the side walls form a limiting space. The fan body extends into the limiting space and abuts against the bottom wall and the side walls.

6. The refrigerator-freezer according to claim 5, characterized in that: A first avoidance opening is formed on the side wall, and the connecting leg extends from the first avoidance opening and is clamped with the first vibration-damping pad via the first clamping structure.

7. The refrigerator-freezer according to claim 5, characterized in that: A second avoidance opening is also provided on the side wall, and a wiring harness slot is provided on the bottom wall at a position corresponding to the second avoidance opening along the circumference of the bottom wall. The wiring harness of the fan passes through the second avoidance opening and is connected to the wiring harness slot.

8. The refrigerator-freezer according to claim 5, wherein: The material hardness of the bottom wall is greater than the material hardness of the side wall.

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