Vibration reduction foot pad, compressor and refrigeration equipment

Abstract

The invention relates to the technical field of refrigeration equipment, in particular to a vibration reduction foot pad, a compressor and refrigeration equipment, the vibration reduction foot pad comprises a main body, the main body comprises a top end, a side face and a bottom end which are sequentially arranged in the axial direction, a mounting through hole is formed in the axis position of the main body, and the mounting through hole penetrates through the top end and the bottom end; the side face of the main body is arranged to be a first inwards-concave curved surface which is symmetrical about the axis, and the first inwards-concave curved surface is in the shape of a hyperbolic rotating body. According to the damping foot pad, materials are reduced, the axial occupied space is reduced, the contact strength of the foot pad and the bottom plate is improved, the axial size of the foot pad is reduced, meanwhile, the side face of the foot pad is arranged to be of a hyperbolic rotating body structure, and the structural strength of the foot pad is improved through the stable mechanical property of a hyperbolic rotating body formed by surrounding the side face of a main body; and stable support is provided under the condition that materials are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of refrigeration equipment, and in particular to a vibration-damping foot pad, a compressor and refrigeration equipment. Background Art

[0002] Household refrigerators and freezers mostly use reciprocating piston refrigeration compressors, and foot pads are used to attenuate the vibration transmission of the compressor. As shown in Figure 1(a), the existing foot pad structure is shown, and Figure 1(b) is a schematic diagram of the installation of the existing foot pad. The foot pad is set between the compressor foot 1 and the box bottom plate 2, and the foot pad is locked and fixed to the compressor foot 1 and the box bottom plate 2 by bolts 3, anti-slip gaskets 4 and bushings 5, thereby attenuating the vibration transmission of the compressor. With the miniaturization of compressors pursued by refrigerator manufacturers, the height of the compressor compartment in the box is extremely compressed, which puts higher requirements on the structural design of the compressor and the height and vibration reduction design of the vibration-damping foot pad. Since the foot pad is a nonlinear hyperelastic material, it is difficult to analyze or optimize the material. The direction of improvement is generally to optimize the structure design based on general materials.

[0003] Due to the height requirement of the compressor, the height of the foot pad needs to be reduced. Usually, a higher axial height is conducive to the design of the vibration reduction structure. The axial vibration reduction structure design can achieve a good vibration reduction effect. However, after the height is reduced, the vibration reduction buffer space of the foot pad is greatly reduced, and the vibration reduction effect is greatly reduced. Therefore, in order to improve the vibration reduction effect while reducing the height, most foot pads minimize the contact area between their bottom surface and the bottom plate of the box. This results in the bottom contact surface of the foot pad being prone to obvious deformation due to the weight of the compressor and the strength of the foot pad after the compressor is installed on the bottom plate; coupled with the bumps during transportation, it is easy to cause the compressor to move, the foot pad to twist and deform, and ultimately the vibration reduction effect will be poor due to the twisting or displacement of the foot pad.

[0004] Therefore, it is necessary to study a foot pad structure that can take into account both smaller axial size and vibration reduction effect. Summary of the invention

[0005] Based on the above description, the present invention provides a vibration-damping foot pad, a compressor and a refrigeration device to solve the problem that the vibration-damping effect of the existing foot pad is poor after the axial size is reduced.

[0006] As a first aspect of the present invention, a vibration-damping foot pad is provided, comprising a main body, wherein the main body comprises a top end, a side end and a bottom end arranged in sequence along the axial direction, a mounting through hole is provided at the axial center position of the main body, the mounting through hole passes through the top end and the bottom end, and the side surface of the main body is arranged as a first concave surface symmetrical about the axial center, and the first concave surface is in the shape of a hyperbolic rotation body.

[0007] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects: the vibration-damping foot pad provided by the present invention, in order to reduce materials and reduce the axial occupied space, improve the contact strength between the foot pad and the base plate, while reducing the axial size of the foot pad, sets the side of the foot pad into a hyperbolic rotating body structure, and utilizes the stable mechanical properties of the hyperbolic rotating body formed around the side of the main body to improve the structural strength of the foot pad, and provide stable support while reducing materials. At the same time, the hyperbolic rotating body structure can increase the circumferential flexibility of the foot pad, and improve the vibration reduction performance of the foot pad with the same axial size.

[0008] Based on the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, a bayonet portion is provided at the top end of the main body, and the bayonet portion is arranged around the mounting through hole, and a mounting position is formed between the buckle portion and the end surface of the top end.

[0010] After adopting the above technical solution, the beneficial effects are as follows: the bayonet portion passes through the mounting hole of the compressor foot to achieve radial positioning, the installation clamping position performs axial positioning and clamping and fixing of the compressor foot, and the compressor foot and the box bottom plate can be locked and fixed by passing the bolt through the mounting hole of the foot pad.

[0011] Furthermore, a central area of ​​the installation position gradually inclines toward the bottom end of the main body.

[0012] After adopting the above technical solution, the beneficial effects are as follows: the installation position adopts a solution in which the center area is inclined toward the bottom, so that the area close to the outer edge of the foot pad is subjected to more pressure, reducing the axial force of the foot pad, making the overall force of the foot pad more uniform, and improving the vibration reduction effect of the foot pad.

[0013] Furthermore, the end surface of the top end is provided with a plurality of protrusions, and all of the protrusions surround the mounting through hole and are arranged symmetrically about the axis of the main body.

[0014] After adopting the above technical solution, the beneficial effects are as follows: by means of multiple raised portions arranged around the mounting through hole, the stress at the axial position of the foot pad can be prevented from being excessively concentrated, and the vibration transmitted along the central area of ​​the foot pad can be converted to a certain extent to be transmitted along the outer edge area, and the vibration pressure can be dispersed to the periphery of the foot pad, so that the force on the foot pad as a whole is more uniform and the vibration reduction effect is better.

[0015] Furthermore, all of the raised portions are arranged on the edge of the end surface of the top end, and all of the raised portions are continuous wavy surfaces.

[0016] After adopting the above technical scheme, the beneficial effects are as follows: the wavy surface on the edge of the top end face can disperse the stress in the vibration reduction process to the circumference of the foot pad, and the deformation of the wavy structure can adapt to the weight of the compressor and adapt to compressors of different weights. It can transfer the vibration from the original vertical (axial) transmission to part of the circumferential transmission, thereby ensuring the vibration isolation performance of the foot pad with smaller axial size.

[0017] Furthermore, the end surface of the bottom end is a second concave curved surface, and the second concave curved surface is symmetrically arranged about the axis of the main body.

[0018] After adopting the above technical solution, the beneficial effects are as follows: the bottom end is set in a concave surface, and during the vibration reduction process, the outer edge area of ​​the bottom end is first deformed by force, and when the pressure is large, it gradually deforms radially toward the axis. This setting first increases the flexibility of the bottom end, making it easier to deform and reduce vibration; second, it provides a gradual deformation space for the foot pad, and the deformation amount can adapt according to the weight of the compressor, thereby improving the vibration reduction effect; third, it distributes the pressure to the outer edge area of ​​the foot pad, reducing the force on the axis, making the overall force on the foot pad more uniform, and increasing the life of the foot pad.

[0019] Furthermore, a reinforcing rib is coaxially provided in the mounting through hole, and the reinforcing rib is arranged around the mounting through hole.

[0020] After adopting the above technical solution, the beneficial effects are: the radial size of the reinforcing rib is smaller than the inner diameter of the mounting through hole, which can improve the reliability of the installation of components in the mounting through hole and enhance the structural strength of the foot pad.

[0021] As a second aspect of the present invention, a compressor is also provided, comprising the above-mentioned vibration-damping foot pad.

[0022] As a third aspect of the present invention, a refrigeration device is also provided, comprising the above-mentioned compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG. 1( a ) is a schematic diagram of the structure of a conventional foot pad, and FIG. 1( b ) is a schematic diagram of the installation and matching structure of a conventional foot pad;

[0024] Figure 2 It is a stress deformation simulation diagram of the prior art foot pad;

[0025] Figure 3 A schematic diagram of the overall structure of a vibration-damping foot pad provided by an embodiment of the present invention from a certain viewing angle;

[0026] Figure 4 A schematic diagram of the overall structure of the vibration-damping foot pad provided by an embodiment of the present invention from another perspective;

[0027] Figure 5 A schematic diagram of the cross-sectional structure of a vibration-damping foot pad provided in an embodiment of the present invention;

[0028] Figure 6 This is a simulation diagram of the force and deformation of the vibration-damping foot pad provided in an embodiment of the present invention.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 1. Compressor foot, 2. Box bottom plate, 3. Bolts, 4. Anti-drop gasket, 5. Bushing, 6. Main body, 6a. Top end, 6b. Bottom end, 6c. Side, 7. Mounting through hole, 8. Bayonet part, 8a. Mounting position, 9. Wave surface, 10. Second concave surface, 11. Reinforcement ribs, A / B / C / D, curves. DETAILED DESCRIPTION

[0031] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0033] It will be appreciated that spatial relationship terms such as "under", "beneath", "below", "under", "above", "above", etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, the element or feature described as "under other elements" or "under it" or "under it" will be oriented as "on" the other elements or features. Therefore, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0034] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0035] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0036] Please refer to Figure 1(a), Figure 1(b) and Figure 2 FIG1(a) shows an existing foot pad structure, and FIG1(b) shows an installation diagram of an existing foot pad. The foot pad is disposed between the compressor foot 1 and the box bottom plate 2, and is locked and fixed to the compressor foot 1 and the box bottom plate 2 by bolts 3, anti-slip gaskets 4, and bushings 5, thereby attenuating the vibration transmission of the compressor. Figure 2 The figure shows the stress deformation simulation diagram of the bottom 6b of the prior art foot pad, where the stress conditions are: red>yellow>green>blue. Figure 2 It can be analyzed from the simulation results that in the vibration reduction process of the existing foot pad, the force near the axis area is the largest. When the foot pad transmits vibration, it is mainly transmitted along the area in the center of the foot pad, and the force is smaller as it approaches the periphery of the foot pad. The stress distribution along the radial direction is very different. This situation causes the foot pad to rely mainly on its central area for vibration reduction, and fails to make good use of the materials near the periphery, so the overall vibration reduction effect is poor. If the vibration reduction effect is to be guaranteed, it is necessary to have sufficient axial dimensions. If the axial dimension of the foot pad needs to be reduced according to the space design requirements of the compressor, this will result in a sharp decrease in the deformation vibration reduction area of ​​the foot pad, making it difficult to meet the vibration reduction requirements of small axial dimensions. In addition, since the existing foot pad mainly relies on its central area to transmit vibration along the axial direction, the stress distribution of the foot pad along the radial direction is very different, and the life of the foot pad may be shortened due to long-term uneven force.

[0037] Therefore, if Figures 3 to 5 As shown, this embodiment provides a vibration-damping foot pad, including a main body 6, the main body 6 including a top 6a, a side 6c and a bottom 6b arranged in sequence along the axial direction, a mounting through hole 7 is provided at the axial center of the main body 6, the mounting through hole 7 passes through the top 6a and the bottom 6b, the side 6c of the main body 6 is set as a first concave surface symmetrical about the axis, and the first concave surface is in the shape of a hyperbolic rotation body. For example Figure 5 In the cross-sectional view, curve A and curve B show the outer contour of the side 6c, and curve A and curve B are symmetrically arranged about the central axis of the foot pad to form a pair of hyperbolas. The side 6c can be approximately regarded as a hyperbolic body of rotation formed by the rotation of curve A and curve B around the central axis of the foot pad.

[0038] It can be understood that the vibration-damping foot pad provided in this embodiment, in order to reduce materials and reduce axial occupied space, improve the contact strength between the foot pad and the base plate, while reducing the axial size of the foot pad, the side 6c of the foot pad is set to a hyperbolic rotating body structure, and the stable mechanical properties of the hyperbolic rotating body formed around the main body side 6c are used to improve the structural strength of the foot pad, and provide stable support while reducing the axial size and saving materials. At the same time, the concave structure of the hyperbolic rotating body can increase the circumferential flexibility of the foot pad, improve the vibration reduction performance of the foot pad with the same axial size, and can meet the vibration reduction requirements of the foot pad with small axial size.

[0039] Based on the above technical solution, the present invention can also be improved as follows.

[0040] In one possible implementation, Figure 3 to Figure 5 As shown, a bayonet portion 8 is provided at the top end 6a of the main body 6, and the bayonet portion 8 is arranged around the mounting through hole 7, and a mounting position 8a is formed between the buckle portion and the end surface of the top end 6a.

[0041] In the installed state, the bayonet portion 8 passes through the mounting hole of the compressor foot 1 to achieve radial positioning, and the mounting clamping position 8a is used to axially position and clamp the compressor foot 1. The compressor foot 1 can be locked and fixed to the box bottom plate 2 by passing the bolt 3 through the mounting hole 7 of the foot pad.

[0042] In one possible implementation, Figure 5 As shown in the cross-sectional view of FIG. 8 , the central area of ​​the mounting position 8a gradually inclines toward the bottom end 6b of the main body 6. Figure 5 Curve C shown shows the tilting trend of the installation position 8a. The installation position 8a adopts a solution in which the central area is tilted along curve C toward the bottom end 6b, so that the area close to the outer edge of the foot pad is subjected to more pressure, reducing the axial force of the foot pad, making the overall force of the foot pad more uniform, and improving the vibration reduction effect of the foot pad.

[0043] In one possible implementation, Figure 3 to Figure 5 As shown, the end surface of the top end 6 a is provided with a plurality of protrusions, all of which surround the mounting through hole 7 and are symmetrically arranged about the axis of the main body 6 .

[0044] By providing a plurality of raised portions around the mounting through hole 7, it is possible to prevent excessive stress concentration at the axial center of the foot pad, convert the vibration transmitted along the central area of ​​the foot pad into propagation along the outer edge area to a certain extent, and disperse the vibration pressure to the periphery of the foot pad, so that the force on the foot pad as a whole is more uniform and the vibration reduction effect is better.

[0045] As a preferred embodiment, Figure 3 to Figure 5As shown, all the protrusions are arranged on the edge of the end surface of the top 6a, and all the protrusions are arranged in a continuous wave surface 9. The wave surface 9 on the edge of the end surface of the top 6a can disperse the stress in the vibration reduction process to the circumference of the foot pad, and the deformation of the wave structure can adapt to the weight of the compressor and adapt to compressors of different weights. It can transfer the vibration from the original vertical (axial) transmission to part of the circumference, thereby ensuring the vibration isolation performance of the foot pad with a smaller axial size.

[0046] In one possible implementation, Figure 4-5 As shown, the end surface of the bottom end 6b is a second concave curved surface 10, and the second concave curved surface 10 is symmetrically arranged about the axis of the main body 6. Figure 5 The curve D shown in FIG. 1 shows the curvature of the second concave surface 10 of the bottom end 6 b , which is similar to a continuous surface formed by rotating a single curve or a parabola.

[0047] The bottom end 6b is concave, and during the vibration reduction process, the outer edge of the bottom end 6b is first deformed by force, and when the pressure is high, it gradually deforms radially toward the axis. This setting increases the flexibility of the bottom end 6b, making it easier to deform and reduce vibration; second, it provides a gradual deformation space for the foot pad, and the deformation amount can adapt according to the weight of the compressor, thereby improving the vibration reduction effect; third, it distributes the pressure to the outer edge of the foot pad, reducing the force on the axis, making the overall force on the foot pad more uniform, and increasing the life of the foot pad.

[0048] In one possible implementation, Figure 5 As shown, a reinforcing rib is coaxially arranged in the mounting through hole 7, and the reinforcing rib is arranged around the mounting through hole 7. The radial dimension of the reinforcing rib is smaller than the inner diameter of the mounting through hole 7, which can improve the reliability of the installation of the components (such as the bushing 5 and the bolt 3) in the mounting through hole 7 and enhance the structural strength of the foot pad.

[0049] In order to verify that the vibration reduction pad provided by the present invention has a significantly better vibration reduction effect than the existing pads, Figure 6 Shown with Figure 2 Simulation diagram of the vibration damping pad simulation results under the same axial size conditions. Comparative analysis Figure 2 and Figure 6The simulation results show that: in the prior art, vibration is mainly transmitted axially, and the transmission area mainly relies on the central area of ​​the foot pad, which is relatively concentrated; in the scheme of the present invention, the vibration is transmitted to the entire foot pad more evenly through the hyperbolic rotating body structure of the side 6c, the wavy structure of the top 6a, the inclined setting of the mounting position 8a, and the concave surface setting of the bottom 6b, so that the vibration transmission of the foot pad is not concentrated, and the vibration is significantly reduced, achieving a better vibration isolation effect. It has been verified that when the same material is used and the same load is applied, the deformation of the optimized vibration-damping foot pad is more obvious than that of the foot pad before optimization, proving that the vibration-damping foot pad of the present invention can significantly absorb vibration energy and attenuate vibration.

[0050] Based on the vibration-damping pads of the above-mentioned embodiments, this embodiment provides a compressor, comprising the vibration-damping pads. The machine feet of the compressor are fixedly connected to the vibration-damping pads.

[0051] Based on the compressor of the above embodiment, this embodiment provides a refrigeration device, including the above compressor. The compressor is fixedly mounted on the bottom plate 2 of the box of the refrigeration device through a vibration-damping foot pad.

[0052] The embodiment of the present invention provides a vibration-damping foot pad, a compressor and a refrigeration device. In order to reduce the material of the foot pad and reduce the axial occupied space, and improve the contact strength between the foot pad and the base plate, the side 6c of the foot pad is set to a hyperbolic rotating body structure while reducing the axial size of the foot pad. The stable mechanical properties of the hyperbolic rotating body formed around the side 6c of the main body are used to improve the structural strength of the foot pad, and provide sufficiently stable support while reducing the material. At the same time, the hyperbolic rotating body structure can increase the circumferential flexibility of the foot pad and improve the vibration reduction performance of the foot pad with the same axial size. A wave structure is used on the end face in contact with the compressor foot 1. The deformation of the wave structure can adapt to the weight of the compressor and adapt to compressors of different weights. The vibration transmission can be changed from the original vertical (axial) transmission to part of the circumferential transmission, ensuring the vibration isolation performance of the foot pad with a smaller axial size; combined with the concave curved surface structure of the bottom end 6b of the foot pad, the vibration transmission path of the foot pad is changed through the optimized design of the structure, and the vibration transmission range in the foot pad is expanded, effectively improving the vibration reduction effect.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A vibration-damping foot pad, comprising a main body (6), wherein the main body (6) comprises a top end (6a), a side end (6c) and a bottom end (6b) arranged in sequence along the axial direction, wherein a mounting through hole (7) is provided at the axial center of the main body (6), wherein the mounting through hole (7) passes through the top end (6a) and the bottom end (6b), wherein: The side surface (6c) of the main body (6) is arranged as a first concave curved surface which is symmetrical about the axis, and the first concave curved surface is in the shape of a hyperbolic body of revolution.

2. A vibration-damping foot pad according to claim 1, characterized in that: The end surface of the top end (6a) is provided with a plurality of protrusions, all of which surround the mounting through hole (7) and are arranged symmetrically about the axis of the main body (6).

3. A vibration-damping foot pad according to claim 2, characterized in that: All of the raised portions are arranged on the edge of the end surface of the top end (6a), and all of the raised portions are continuous wavy surfaces (9).

4. A vibration-damping foot pad according to any one of claims 1 to 3, characterized in that: The top end (6a) of the main body (6) is provided with a bayonet portion (8), the bayonet portion (8) is arranged around the mounting through hole (7), and a mounting position (8a) is formed between the buckle portion and the end surface of the top end (6a).

5. The vibration-damping foot pad according to claim 4, characterized in that: The central area of ​​the installation position (8a) gradually inclines toward the bottom end (6b) of the main body (6).

6. The vibration-damping foot pad according to claim 5, characterized in that: The end surface of the bottom end (6b) is a second concave curved surface (10), and the second concave curved surface (10) is symmetrically arranged about the axis of the main body (6).

7. A vibration-damping foot pad according to claim 1, 2, 3, 5 or 6, characterized in that: A reinforcing rib (11) is coaxially arranged inside the mounting through hole (7), and the reinforcing rib (11) is arranged around the mounting through hole (7).

8. A compressor, characterized in that: The invention comprises the vibration-damping foot pad according to any one of claims 1 to 7.

9. A refrigeration device, characterized in that: Comprising the compressor as claimed in claim 8.

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