Passive multistage damping application system

Abstract

The utility model discloses a passive multistage damping application system which comprises an installation platform, a chassis assembly and a compressor supporting metal plate, a whole machine damping foot pad is arranged between the bottom corner of the chassis assembly and the installation platform, and a secondary shock isolation mechanism is arranged between the chassis assembly and the compressor supporting metal plate. The compressor supporting metal plate fixes the compressor and the pipeline system through the compressor damping system. Through damping absorption of the whole machine shock absorption foot pad, energy dissipation of the secondary shock isolation mechanism and local isolation of a compressor shock absorption system, the overall vibration noise of the system is finally reduced from 60 dB (A) to 55 dB (A), stress concentration of a pipeline is remarkably reduced, and the service life of equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a passive multistage damping application system. BACKGROUND

[0002] The existing heat pump system adopts the integral structure design of the vapor compression cycle technology, the core components compressor, condenser, expansion valve and evaporator are connected through the hard copper pipe welding, the conventional damping scheme only adopts the nitrile rubber damping pad to carry out the basic vibration isolation to the compressor body, but the system pipeline and the auxiliary equipment gas-liquid separator, liquid tank and the like lack the effective vibration isolation structure, leading to the vibration transmission to the shell through the rigid pipeline, producing the significant noise pollution about 60dB (A), influencing the user experience, in addition, the stress concentration caused by the hard connection easily causes the brazed pipeline fatigue damage. SUMMARY

[0003] In view of the above problems, the utility model provides a passive multistage damping application system, reduces vibration transmission efficiency through multilayer vibration isolation structure, realizes wideband noise attenuation and prolongs pipeline life, effectively solve the problem pointed out in the background art.

[0004] The technical scheme adopted by the utility model is:

[0005] A passive multistage damping application system, including installation platform, chassis assembly and compressor support sheet metal, the bottom corner between chassis assembly and installation platform is equipped with whole machine damping foot pad, the chassis assembly and compressor support sheet metal are equipped with two-stage shock isolation mechanism, the compressor support sheet metal is fixed compressor and pipeline system through compressor damping system.

[0006] As preferred, the two-stage shock isolation mechanism includes a plurality of flat head bolts, and a shock isolation sheet fixed to the outer side of the middle part of the flat head bolt, the platform bolt forms an upper fixed bolt on the upper part of the shock isolation sheet and forms a lower fixed bolt on the lower part of the shock isolation sheet, the chassis assembly is fixed with a plurality of lower fixed nuts matched with the lower fixed bolt, and the upper fixed bolt is fastened through the upper fixed nut after passing through the compressor support sheet metal upwards.

[0007] The chassis assembly is fixed through the lower fixed bolt and the lower fixed nut, the compressor support sheet metal is fixed through the upper fixed bolt and the upper fixed nut, and the upper fixed bolt and the lower fixed bolt are integrated on the flat head bolt, so that the overall structure is simple and reasonable.

[0008] As preferred, the shock isolation sheet is made of natural rubber and styrene-butadiene rubber.

[0009] As preferred, the shock isolation sheet and the platform bolt are molded.

[0010] This invention reduces the overall vibration noise of the system from 60dB(A) to 55dB(A) through the damping absorption of the whole machine's shock-absorbing foot pads, the energy dissipation of the secondary vibration isolation mechanism, and the local isolation of the compressor's vibration damping system. It also significantly reduces pipeline stress concentration and extends the equipment's lifespan.

[0011] The beneficial effects of this utility model are:

[0012] 1. A three-stage progressive shock absorption structure consisting of "machine feet - chassis vibration isolation - supporting sheet metal" is used to decouple the vibration transmission link;

[0013] 2. The secondary seismic isolation mechanism adopts composite materials and molding process to improve damping performance and structural stability;

[0014] 3. The system vibration noise was reduced from 60dB(A) to 55dB(A), significantly improving user comfort;

[0015] 4. Multi-stage vibration isolation reduces pipeline stress and strain, extending equipment service life;

[0016] 5. The installation platform and the machine's shock-absorbing feet are highly compatible and suitable for different ground conditions. Attached Figure Description

[0017] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0018] Fig. 2 This is a structural diagram of the sheet metal supporting the chassis assembly and compressor.

[0019] Fig. 3 This is a structural diagram of a flat-head bolt;

[0020] 1. Mounting platform, 2. Overall machine shock-absorbing feet, 3. Chassis assembly, 4. Secondary vibration isolation mechanism, 41. Flat head bolts, 42. Vibration isolation pads, 43. Lower fixing nut, 44. Upper fixing nut, 5. Compressor support sheet metal, 6. Compressor vibration isolation system, 7. Compressor and piping system. Detailed Implementation

[0021] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] Furthermore, in the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, 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 number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0028] like Figs. 1-3 As shown, a passive multi-stage vibration reduction application system includes an installation platform 1, a chassis assembly 3, and a compressor support sheet metal 5. The bottom corner of the chassis assembly 3 is provided with whole-machine vibration damping pads 2 between it and the installation platform 1. A two-stage vibration isolation mechanism 4 is provided between the chassis assembly 3 and the compressor support sheet metal 5. The compressor support sheet metal 5 fixes the compressor and pipeline system 7 through the compressor vibration damping system 6.

[0029] The secondary vibration isolation mechanism 4 includes multiple flat-head bolts 41 and vibration isolation plates 42 fixed on the outer side of the middle part of the flat-head bolts 41. The platform bolts 41 form upper fixing bolts on the upper part of the vibration isolation plates 42 and lower fixing bolts on the lower part of the vibration isolation plates 42. Multiple lower fixing nuts 43 that match the lower fixing bolts are fixed on the chassis assembly 3. The upper fixing bolts pass upward through the compressor support sheet metal 5 and are tightened by the upper fixing nuts 44.

[0030] The vibration isolation sheet 42 is made of natural rubber and styrene-butadiene rubber.

[0031] The vibration isolation plate 42 and the platform bolt 41 are molded together.

[0032] The working principle of this utility model:

[0033] Synergistic effect of three-stage damping structure:

[0034] Level 1 (Integrated Machine Vibration Damping Pads): The integrated machine vibration damping pads, made of natural rubber or styrene-butadiene rubber, provide initial vibration isolation between the mounting platform and the chassis assembly, absorbing low-frequency vibrations transmitted from the ground or mounting platform and reducing the vibration input of the overall system.

[0035] The second level (secondary vibration isolation mechanism between chassis assembly and supporting sheet metal): Secondary vibration isolation is formed by flat-head bolts and molded composite vibration isolation plates (natural rubber + styrene-butadiene rubber). When vibration is transmitted from chassis assembly to compressor supporting sheet metal, vibration isolation plates further attenuate medium and high frequency vibrations through high damping characteristics. At the same time, the upper and lower fixing structures of flat-head bolts (lower fixing nut and upper fixing nut) achieve mechanical decoupling and block the vibration transmission path.

[0036] The third level (compressor vibration damping system): The compressor and piping system are fixed to the compressor support sheet metal by elastic support structures (such as rubber pads or springs) to locally isolate the high-frequency vibrations generated by the compressor operation and prevent the vibrations from being transmitted to the outer casing through rigid pipes.

[0037] Vibration transmission link decoupling:

[0038] The three-stage vibration reduction structure forms a progressive attenuation chain. Vibration energy is absorbed by the damping pads of the whole machine, dissipated by the energy of the secondary vibration isolation mechanism, and isolated by the local vibration reduction system of the compressor. Ultimately, the overall vibration noise of the system is reduced from 60dB(A) to 55dB(A), and the stress concentration in the pipeline is significantly reduced, thus extending the service life of the equipment.

[0039] Finally, it should be noted that the above examples are merely specific embodiments of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this utility model should be considered within the protection scope of this utility model.

Claims

1. A passive multi-stage vibration damping application system, characterized in that, The system includes an installation platform (1), a chassis assembly (3), and a compressor support sheet metal (5). The bottom corner of the chassis assembly (3) is provided with whole-machine shock-absorbing pads (2) between it and the installation platform (1). A secondary vibration isolation mechanism (4) is provided between the chassis assembly (3) and the compressor support sheet metal (5). The compressor support sheet metal (5) fixes the compressor and pipeline system (7) through the compressor vibration damping system (6).

2. The passive multi-stage vibration damping application system according to claim 1, characterized in that, The secondary vibration isolation mechanism (4) includes multiple flat-head bolts (41) and vibration isolation plates (42) fixed on the outer side of the middle part of the flat-head bolts (41). The flat-head bolts (41) form upper fixing bolts on the upper part of the vibration isolation plates (42) and lower fixing bolts on the lower part of the vibration isolation plates (42). Multiple lower fixing nuts (43) that match the lower fixing bolts are fixed on the chassis assembly (3). The upper fixing bolts pass upward through the compressor support sheet metal (5) and are then tightened by the upper fixing nuts (44).

3. The passive multi-stage vibration damping application system according to claim 2, characterized in that, The vibration isolation sheet (42) is made of natural rubber and styrene-butadiene rubber.

4. The passive multi-stage vibration damping application system according to claim 3, characterized in that, The vibration isolation sheet (42) and the flat-head bolt (41) are molded together.

Images