CN112065921A - Vibration damper, compressor and water chilling unit - Google Patents

Abstract

The invention discloses a vibration damping device, a compressor and a chiller. The vibration damping device comprises: a casing, the casing has a vibration damping cavity; and a connecting piece, the connecting piece is penetrated on the casing , the connecting piece has a connecting end and a damping end, the connecting end of the connecting piece is located outside the damping cavity and is used for connecting with a vibration source, and the damping end of the connecting piece is located in the damping cavity ; a damping spring, the damping spring is installed in the damping cavity, the first end of the damping spring is connected to the connecting end of the connecting piece, and the second end of the damping spring is connected to the The inner wall of the casing is connected; the damping particles are filled in the vibration damping cavity. The vibration damping device of the present invention can fully dissipate and absorb the vibration energy of the vibration source through the cooperation of the damping spring and the damping particles, thereby improving the vibration damping effect.

Description

Vibration dampers, compressors and chillers

technical field

The invention relates to the technical field of chillers, in particular to a vibration damping device, a compressor and a chiller.

Background technique

At present, the requirements for vibration performance of chillers are still showing a trend of higher and higher. As the vibration excitation source in the whole machine, the vibration reduction and vibration absorption measures of the compressor have always played an important role in the vibration effect of the whole machine. Therefore, in order to improve the overall vibration effect of the whole machine, both economy and achievability are considered.

Existing dynamic vibration absorbers are divided into active and passive types. Active dynamic vibration absorbers need to integrate signal acquisition and feedback in the control system of the whole machine, analyze the vibration frequency collected by the vibration, and control the vibration absorber to generate anti-phase vibration. The source vibration can be reduced, and this scheme makes the design workload of the whole machine controller larger; while the traditional passive dynamic vibration absorber mainly relies on its own weight, and the vibration is dissipated by the vulcanized rubber connecting the damping rod and the main body of the vibration absorber, and the vulcanized rubber It mainly relies on counterweight to reduce vibration, and the vibration reduction effect is poor.

SUMMARY OF THE INVENTION

The invention discloses a vibration damping device, a compressor and a water chiller, and solves the problem that the traditional passive dynamic vibration absorber adopts vulcanized rubber for vibration damping and the vibration damping effect is poor.

According to one aspect of the present invention, a vibration damping device is disclosed, comprising: a casing, the casing having a vibration damping cavity; A connecting end and a damping end, the connecting end of the connecting piece is located outside the damping cavity and used for connecting with the vibration source, and the damping end of the connecting piece is located in the damping cavity; the damping spring, so The damping spring is installed in the damping cavity, the first end of the damping spring is connected with the connecting end of the connecting piece, and the second end of the damping spring is connected with the inner wall of the housing; damping particles, and the damping particles are filled in the vibration damping cavity.

Further, the connecting member includes: a connecting rod, the first end of which is the connecting end of the connecting member; a tray, the tray is connected to the second end of the connecting rod, and the tray is The damping end of the connecting piece, the tray is connected with the second end of the damping spring.

Further, the tray divides the vibration damping cavity into two cavities, and the damping particles are respectively filled in the two cavities.

Further, the connecting rod and the tray are screwed together.

Further, some of the damping particles are located on the tray.

Further, the casing is provided with a through hole, the connecting piece is penetrated in the through hole, and the connecting piece is in clearance fit with the through hole.

Further, the casing includes an upper casing and a lower casing, and the upper casing and the lower casing are buckled with each other to form the vibration damping cavity.

Further, the casing is also provided with filling holes for filling the damping particles.

Further, the vibration damping device as a whole is a mass block capable of performing counterweight vibration damping.

According to a second aspect of the present invention, a compressor is disclosed, comprising the above-mentioned vibration damping device.

According to a third aspect of the present invention, a chiller is disclosed, comprising the above compressor.

When the vibration damping device of the present invention is in operation, the vibration energy transmitted by the vibration source is transmitted to the vibration damping spring through the connecting piece, and the vibration damping spring is forced to generate vibration that is out of phase with the vibration wave of the vibration source, thereby reducing the vibration of the vibration source. Attenuation, while attenuating the vibration of the vibration source, the damping spring conducts part of the vibration to the damping particles, activates the movement of the damping particles, and attenuates the remaining vibration energy of the vibration source. The vibration damping device of the present invention can fully dissipate and absorb the vibration energy of the vibration source through the cooperation of the damping spring and the damping particles, thereby improving the vibration damping effect.

Description of drawings

1 is a schematic structural diagram of a vibration damping device according to an embodiment of the present invention;

Fig. 2 is the exploded view of the vibration damping device of the embodiment of the present invention;

3 is a perspective view of a vibration damping device according to an embodiment of the present invention;

Legend: 10, shell; 11, vibration damping cavity; 12, upper shell; 121, through hole; 122, filling hole; 13, lower shell; 20, connecting piece; 21, connecting rod; 22, tray; 30 , damping spring; 40, damping particles.

Detailed ways

The present invention will be further described below in conjunction with the embodiments, but not limited to the contents in the description.

As shown in FIG. 1 , the present invention discloses a vibration damping device, which includes a housing 10, a connecting piece 20, a damping spring 30 and damping particles 40. The housing 10 has a vibration damping cavity 11; the connecting piece 20 passes through the housing On the body 10, the connecting piece 20 has a connecting end and a damping end, the connecting end of the connecting piece 20 is located outside the damping cavity 11 and is used for connecting with the vibration source, and the damping end of the connecting piece 20 is located in the damping cavity 11; The damping spring 30 is installed in the damping cavity 11, the first end of the damping spring 30 is connected with the connecting end of the connecting piece 20, the second end of the damping spring 30 is connected with the inner wall of the housing 10; the damping particles 40 are filled in the damping in cavity 11. When the vibration damping device of the present invention is in operation, the vibration energy transmitted by the vibration source is transmitted to the vibration damping spring 30 through the connecting member 20, and the vibration damping spring 30 is forced to generate vibration that is out of phase with the vibration wave of the vibration source, so as to counteract the vibration. The vibration of the source is attenuated, while the vibration of the vibration source is attenuated, the damping spring 30 conducts part of the vibration to the damping particles 40, activates the movement of the damping particles 40, and attenuates the remaining vibration energy of the vibration source. The vibration damping device of the present invention can fully dissipate and absorb the vibration energy of the vibration source by cooperating with the damping spring 30 and the damping particles 40, thereby improving the vibration damping effect.

As shown in FIG. 2 , in the above embodiment, the connecting member 20 includes a connecting rod 21 and a tray 22 . The first end of the connecting rod 21 is the connecting end of the connecting member 20 ; the tray 22 is connected to the second end of the connecting rod 21 . , the tray 22 is the damping end of the connecting piece 20 , and the tray 22 is connected with the second end of the damping spring 30 . The damping device of the present invention connects the damping spring 30 with the vibration source by arranging the connecting rod 21 and the tray 22, so that the vibration energy of the vibration source can be transmitted to the damping spring 30, absorbed and offset by the damping spring 30, and then The damping particles 40 are used for dissipation, thereby improving the vibration damping effect.

In the above embodiment, the tray 22 divides the vibration damping cavity 11 into two cavities, and the damping particles 40 are respectively filled in the two cavities. The tray 22 of the damping device of the present invention can not only play the role of connecting with the damping spring 30, but also have the function of dividing the damping cavity 11 into two, so that the damping particles 40 can be dispersed into the two cavities, The vibration dissipation of the two-stage damping particles 40 is realized, thereby improving the vibration reduction effect.

In the above embodiment, the connecting rod 21 and the tray 22 are threadedly connected, the connecting rod 21, the connecting rod 21 and the vibration source are welded and fixed, the damping spring 30 and the tray 22 are welded and fixed, and the damping spring 30 and the shell are fixed by welding. Welded and fixed between 10. The vibration damping device of the present invention forms an integral structure by sequentially connecting the housing 10, the damping spring 30, the tray 22, the connecting rod 21 and the vibration source by rigid connection, which not only increases the connection strength, but also improves the vibration damping device. The service life of the vibration damping spring 30 will be automatically restored to the original state after elastic deformation by vibration excitation. The time difference of the reaction process can realize the phase difference between the feedback vibration waveform of the vibration damping spring 30 and the vibration waveform of the excitation source. deviation, so as to have the effect of canceling the vibration of the excitation source. When the vibration is conducted on the damping spring 30 , it acts as a damping rod as a whole, which disturbs the damping particles 40 in the damping cavity 11 , so that the damping particles 40 dissipate part of the vibration, thereby improving the damping effect.

In the above-described embodiment, some of the damping particles 40 are located on the tray 22 . The tray 22 of the damping device of the present invention not only has the function of connecting with the damping spring 30, but also has the function of dividing the damping cavity 11 into two upper and lower cavities, so that a part of the damping particles 40 can be placed on the tray 22, The damping particles 40 are distributed more evenly in the entire vibration-damping cavity 11, thereby improving the vibration-damping effect.

In the above-mentioned embodiment, the housing 10 is provided with a through hole 121 , the connecting rod 21 of the connecting member 20 is penetrated in the through hole 121 , and the connecting rod 21 is in clearance fit with the through hole 121 . The vibration damping device of the present invention avoids the deterioration of vibration caused by the collision between the connecting rod 21 and the housing 10 during the working process through the clearance fit between the connecting rod 21 and the through hole 121 .

In the above-mentioned embodiment, the casing 10 includes an upper casing 12 and a lower casing 13 , and the upper casing 12 and the lower casing 13 are buckled with each other to form the vibration damping cavity 11 . By adopting the upper casing 12 and the lower casing 13, the vibration damping device of the present invention can make the installation more convenient.

In the above embodiment, the housing 10 is further provided with filling holes 122 for filling the damping particles 40 . The damping device of the present invention can conveniently fill the damping particles 40 by providing the filling holes 122 .

As shown in FIG. 3 , in the above-mentioned embodiment, the entire vibration damping device is a mass block capable of performing counterweight vibration damping. Due to the thicker casing 10 of the vibration damping device of the present invention, the mass of the entire vibration damping device can be increased. On the one hand, the vibration feedback quality of the spring can be effectively improved, and the feedback attenuation effect can be increased; on the other hand, the large weight can reduce the counterweight. vibration effect.

According to a second embodiment of the present invention, a compressor is also disclosed, including the above-mentioned vibration damping device.

According to a third embodiment of the present invention, a chiller is also disclosed, comprising the above compressor.

The chiller of the present invention gradually weakens and dissipates the vibration generated by the vibration source through the vibration feedback of the vibration damping device, the combined use of the damping particles 40 and the counterweight, so that the compressor, as the vibration vibration source of the whole machine, can reduce the vibration to the minimum as much as possible. The measuring point transmits vibration and improves the vibration performance of the chiller.

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly explaining the present invention, and are not intended to limit the embodiments of the present invention. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. Not all implementations can be exhaustive here. Any obvious changes or changes derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims (11)

1. a vibration damping device, is characterized in that, comprises: a casing (10), the casing (10) having a vibration damping cavity (11); A connecting piece (20), the connecting piece (20) is penetrated on the casing (10), the connecting piece (20) has a connecting end and a vibration damping end, and the connecting end of the connecting piece (20) is located outside the vibration damping cavity (11), and is used for connecting with a vibration source, and the vibration damping end of the connecting member (20) is located in the vibration damping cavity (11); A damping spring (30), the damping spring (30) is installed in the damping cavity (11), and the first end of the damping spring (30) is connected to the connecting end of the connecting piece (20) connection, the second end of the damping spring (30) is connected with the inner wall of the housing (10); Damping particles (40), the damping particles (40) are filled in the vibration damping cavity (11). 2. The vibration damping device according to claim 1, characterized in that, the connecting member (20) comprises: a connecting rod (21), the first end of the connecting rod (21) is the connecting end of the connecting piece (20); A tray (22), the tray (22) is connected to the second end of the connecting rod (21), the tray (22) is the vibration damping end of the connecting piece (20), the tray (22) ) is connected with the second end of the damping spring (30). 3. The vibration damping device according to claim 2, characterized in that, The tray (22) divides the vibration damping cavity (11) into two cavities, and the damping particles (40) are respectively filled in the two cavities. 4. The vibration damping device according to claim 2, characterized in that, The connecting rod (21) is threadedly connected with the tray (22). 5. The vibration damping device according to claim 3, characterized in that, Parts of the damping particles (40) are located on the tray (22). 6. The vibration damping device according to claim 1, characterized in that, The casing (10) is provided with a through hole (121), the connecting piece (20) passes through the through hole (121), and the connecting piece (20) is connected to the through hole (121) Clearance fit. 7. The vibration damping device according to claim 1, characterized in that, The casing (10) includes an upper casing (12) and a lower casing (13), and the upper casing (12) and the lower casing (13) are fastened with each other to form the vibration damping cavity (11). ). 8. The vibration damping device according to claim 1, characterized in that, Filling holes (122) for filling damping particles (40) are also opened on the casing (10). 9. The vibration damping device according to claim 1, characterized in that, The whole of the vibration damping device is a mass block capable of performing counterweight vibration damping. 10. A compressor, characterized by comprising the vibration damping device according to any one of claims 1 to 9. 11. A chiller, comprising the compressor of claim 10.

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