Marine container variable frequency driven refrigeration compressor

Abstract

The application discloses a marine container variable-frequency driving type refrigeration compressor, which comprises a mounting seat, a plurality of ring grooves are equidistantly formed on the mounting seat in the circumferential direction, a rotating platform is rotationally connected in each ring groove, a buffer supporting mechanism is commonly supported between the rotating platforms, and a compressor shell is supported on the buffer supporting mechanism; a horizontal buffer mechanism is arranged on each rotating platform and is used for limiting the rotating speed of the rotating platform through damping force; a damping force self-adaptive adjusting mechanism is arranged in each ring groove and is used for autonomously adjusting the damping degree of the horizontal buffer mechanism; through the above components, when the ship body shakes, the compressor is kept stable through horizontal buffering and self-adaptive damping adjustment, normal oil supply of a lubricating system is guaranteed, oil shortage abrasion is avoided, operation stability and reliability are improved, and the service life is prolonged.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and in particular to a variable frequency drive refrigeration compressor for marine containers. Background Technology

[0002] Marine container variable frequency drive refrigeration compressors are core equipment in ocean cold chain transportation that provides continuous refrigeration for containers and ensures low-temperature storage of goods. Their operational stability directly determines the reliability of the refrigeration system and the safety of cargo storage and transportation.

[0003] Because ships are susceptible to continuous rolling, pitching, and turbulence from wind and waves during navigation, traditional refrigeration compressors, which often employ rigid mounting structures, transmit vibrations and tilting directly to the compressor body, easily leading to compressor imbalance. Simultaneously, severe shaking can cause uneven lubrication and localized lubrication shortages in the internal lubrication system, accelerating wear on moving parts and causing problems such as increased operating noise, seal failure, and loose piping, seriously affecting compressor lifespan and refrigeration performance. Existing shock absorption structures are mostly fixed damping types, unable to adaptively adjust the buffering force according to the ship's rolling amplitude. This makes it difficult to balance stability and buffering effectiveness under different sea conditions, resulting in a high compressor failure rate and failing to meet the long-term, stable, and reliable refrigeration requirements of marine containers. Summary of the Invention

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a marine container variable frequency drive refrigeration compressor, which solves the problems that the hull swaying can easily lead to compressor attitude imbalance, uneven lubrication and insufficient oil wear, the inability of traditional fixed shock absorption damping to adaptively adjust, and the high failure rate of the compressor.

[0005] The present invention also provides a marine container variable frequency drive refrigeration compressor, comprising: a mounting base, wherein a plurality of annular grooves are equally spaced along the circumference of the mounting base, and a turntable is rotatably connected in each of the annular grooves; a buffer support mechanism is jointly supported among the plurality of turntables, and a compressor housing is supported on the buffer support mechanism; a horizontal buffer mechanism is provided on each of the turntables for limiting the rotation speed of the turntable through damping force; and a damping force adaptive adjustment mechanism is provided in each of the annular grooves for autonomously adjusting the damping force of the horizontal buffer mechanism.

[0006] Preferably, the mounting base has a base plate inside, and the compressor housing is fixedly connected to the upper surface of the base plate.

[0007] Preferably, the buffer support mechanism includes: a plurality of first supports and a plurality of second supports; the plurality of first supports are respectively hinged to the side of the corresponding turntable facing the base plate, and the plurality of second supports are equidistantly hinged to the side surface of the base plate along the circumferential direction.

[0008] Preferably, the buffer support mechanism further includes: multiple springs and multiple dampers; each spring and damper corresponds one-to-one and is fixedly connected between the corresponding first bracket and second bracket.

[0009] Preferably, the horizontal buffer mechanism includes: multiple slide grooves and multiple sliders; the multiple slide grooves are equidistantly spaced along the circumference on the turntable, and the multiple sliders are slidably connected to the corresponding slide grooves.

[0010] Preferably, the horizontal buffer mechanism further includes: multiple springs, multiple dampers, and multiple rubber blocks; each spring and damper is paired together and fixedly connected to the upper surface of the corresponding slider, and the damper is fitted inside the spring; the multiple rubber blocks are respectively fixedly connected to the upper end of each pair of springs and dampers and abut against the inner wall of the annular groove.

[0011] Preferably, the horizontal buffer mechanism further includes: a support rod and a counterweight plate; the support rod is fixedly connected to the lower surface of the base plate, the counterweight plate is fixedly connected to the lower end of the support rod, and the counterweight plate is located at the center of gravity of the compressor housing.

[0012] Preferably, the damping force adaptive adjustment mechanism includes: a frame, multiple traction grooves, and multiple traction columns; the frame is fixedly connected to the inner wall of the annular groove, the multiple traction grooves are equidistantly opened on the frame along the circumference, and the multiple traction columns are respectively fixedly connected to the side surface of the corresponding slider and slidably connected in the corresponding traction groove.

[0013] Preferably, the traction groove extends in an arc shape, and the arc shape extends towards the outside of the annular groove.

[0014] Preferably, the bottom of the mounting base is provided with an anti-slip and shock-absorbing pad, which is fixedly connected to the lower surface of the mounting base to improve the installation stability of the compressor in the marine container.

[0015] Beneficial effects:

[0016] The marine container variable frequency drive refrigeration compressor of this technical solution can, when the ship hull is swaying, reduce the transmission of the swaying of the mounting base to the compressor housing through the horizontal buffer mechanism, limit the rotation speed of the turntable, and keep the compressor in a stable position; the damping force adaptive adjustment mechanism automatically adjusts the damping magnitude according to the swaying amplitude to adapt to different sea conditions, ensure normal oil supply to the compressor's internal lubrication system, avoid uneven lubrication and wear caused by swaying, improve operational stability and reliability, extend service life, and reduce failure rate. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1This is a front view structural diagram of the variable frequency drive refrigeration compressor for marine containers of the present invention;

[0019] Figure 2 This is a cross-sectional view of the variable frequency drive refrigeration compressor for marine containers of the present invention.

[0020] Figure 3 This is an enlarged structural diagram of the frame of the variable frequency drive refrigeration compressor for marine containers of the present invention;

[0021] Figure 4 This is a partially enlarged cross-sectional view of the annular groove of the variable frequency drive refrigeration compressor for marine containers of the present invention;

[0022] Figure 5 This is an enlarged cross-sectional view of the spring 2 and damper 2 of the variable frequency drive refrigeration compressor for marine containers of the present invention.

[0023] Legend:

[0024] 1. Compressor housing; 2. Mounting base; 3. Annular groove; 4. Slide groove; 5. Traction groove; 6. Traction column; 7. Rubber block; 8. Spring 1; 9. Damper 1; 10. Sliding block; 11. Turntable; 12. First bracket; 13. Second bracket; 14. Spring 2; 15. Damper 2; 16. Base plate; 17. Counterweight plate; 18. Frame. Detailed Implementation

[0025] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0026] Reference Figure 1-5 According to an embodiment of the present invention, a marine container variable frequency drive refrigeration compressor includes: a mounting base 2, on which a plurality of annular grooves 3 are equally spaced along the circumference, and a turntable 11 is rotatably connected in each annular groove 3;

[0027] Considering the potential for vertical and radial vibration impacts on the compressor caused by hull swaying, a buffer support mechanism is provided between multiple turntables 11. The compressor housing 1 is supported on the buffer support mechanism, and a base plate 16 is provided inside the mounting base 2. The compressor housing 1 is fixedly connected to the upper surface of the base plate 16. The buffer support mechanism includes: multiple first brackets 12 and multiple second brackets 13. The multiple first brackets 12 are respectively hinged to the side of the corresponding turntable 11 facing the base plate 16, and the multiple second brackets 13 are equidistantly hinged to the side surface of the base plate 16 along the circumferential direction. The buffer support mechanism also includes: multiple second springs 14 and multiple second dampers 15. Each second spring 14 and each second damper 15 corresponds to one and is fixedly connected between the corresponding first bracket 12 and second bracket 13.

[0028] Specifically: the compressor housing 1 is the housing of the variable frequency drive refrigeration compressor. In the existing technology, the variable frequency drive refrigeration compressor is the core power equipment of the marine container refrigeration system. By adjusting the speed through variable frequency drive, the refrigeration capacity is precisely controlled to provide a stable low temperature storage environment for the goods in the container. This is an existing mature technology and is well known to people in this field, so it will not be elaborated in this article.

[0029] During operation, spring 14 and damper 15 work together to provide elastic buffering and damping energy absorption for vibration, which can effectively attenuate vibration transmission, reduce the impact on the compressor casing, and ensure operational stability.

[0030] Considering that the rolling and pitching of the hull can easily cause the compressor to sway horizontally and lose its attitude, each turntable 11 is equipped with a horizontal buffer mechanism to limit the rotation speed of the turntable 11 through damping force. The horizontal buffer mechanism includes: multiple slide grooves 4 and multiple sliders 10; multiple slide grooves 4 are equidistantly opened on the turntable 11 in the circumferential direction, and multiple sliders 10 are slidably connected in the corresponding slide grooves 4. The horizontal buffer mechanism also includes: multiple springs 8, multiple dampers 9, and multiple rubber blocks 7; each spring 8 and damper 9 are paired together and fixedly connected to the upper surface of the corresponding slider 10, and the damper 9 is sleeved inside the spring 8; multiple rubber blocks 7 are fixedly connected to the upper end of each pair of springs 8 and dampers 9 and abut against the inner wall of the annular groove 3. The horizontal buffer mechanism also includes: a support rod and a counterweight plate 17; the support rod is fixedly connected to the lower surface of the base plate 16, and the counterweight plate 17 is fixedly connected to the lower end of the support rod.

[0031] During operation, the rubber block 7 abuts against the inner wall of the ring groove 3 to generate damping force. Together with the counterweight plate 17, it lowers the center of gravity and limits the rotation speed of the turntable 11. This can prevent the shaking of the mounting base 2 from being transmitted to the compressor housing 1, maintain a stable posture, and avoid uneven lubrication and wear.

[0032] Considering the large differences in sway amplitude under different sea conditions and the difficulty in adapting fixed damping, each annular groove 3 is equipped with a damping force adaptive adjustment mechanism to autonomously adjust the damping force of the horizontal buffer mechanism. The damping force adaptive adjustment mechanism includes: a frame 18, multiple traction grooves 5, and multiple traction columns 6. The frame 18 is fixedly connected to the inner wall of the annular groove 3, the multiple traction grooves 5 are equidistantly opened on the frame 18 along the circumference, and the multiple traction columns 6 are respectively fixedly connected to the side surface of the corresponding slider 10 and slidably connected in the corresponding traction groove 5.

[0033] During operation, as the turntable 11 rotates, the traction column 6 slides along the arc-shaped traction groove 5, which drives the slider 10 to move and change the squeezing force of the rubber block 7, so as to realize the damping force adaptively adjusted with the swaying amplitude, adapting to different sea conditions and improving the reliability and service life of the compressor.

[0034] In summary, the improvement of this embodiment lies in:

[0035] When the hull sways, the horizontal buffer mechanism can attenuate the transmission of the swaying of the mounting base 2 to the compressor housing 1, limit the rotation speed of the turntable 11, and keep the compressor in a stable posture; the damping force adaptive adjustment mechanism automatically adjusts the damping magnitude according to the swaying amplitude to adapt to different sea conditions, ensure normal oil supply to the compressor's internal lubrication system, avoid uneven lubrication and wear caused by swaying, improve operational stability and reliability, extend service life, and reduce failure rate.

[0036] Based on the above, other structures also need to be disclosed in detail, such as:

[0037] The traction groove 5 extends in an arc shape, and the arc shape extends towards the outside of the annular groove 3.

[0038] The bottom of the mounting base 2 is provided with an anti-slip and shock-absorbing pad, which is fixedly connected to the lower surface of the mounting base 2 to improve the installation stability of the compressor in the marine container.

[0039] Working principle: When the container variable frequency drive refrigeration compressor of this ship is working, the ship will generate roll, pitch and turbulence vibrations during navigation. The mounting base 2 will shake synchronously with the hull. The anti-slip shock-absorbing pad at the bottom of the mounting base 2 will first weaken the rigid impact between the hull and the mounting base 2, thus achieving primary shock absorption.

[0040] When the mounting base 2 shakes, the spring 14 and damper 15 in the buffer support mechanism work together to elastically buffer and dampen the vertical and radial vibrations transmitted to the compressor housing 1, thereby attenuating the vibration impact.

[0041] When the turntable 11 tends to rotate with the mounting base 2, the rubber block 7 in the horizontal buffer mechanism abuts against the inner wall of the annular groove 3 to form a damping force. This, together with the counterweight plate 17, lowers the overall center of gravity, limits the rotation speed of the turntable 11, and blocks the transmission of the swaying of the mounting base 2 to the compressor housing 1.

[0042] At the same time, the turntable 11 rotates and drives the traction column 6 to slide along the arc-shaped traction groove 5 on the frame 18. The traction column 6 drives the slider 10 to move in the groove 4. The greater the sway of the hull, the greater the squeezing force of the slider 10 and the rubber block 7 on the inner wall of the annular groove 3. The damping force increases accordingly. The damping is gentle when the sway is small and strong when the sway is large, which can adapt to different sea conditions.

[0043] The entire mechanism keeps the compressor housing 1 in a stable position at all times, ensuring normal oil supply to the internal lubrication system, avoiding uneven lubrication and wear due to shaking or tilting, ensuring stable and reliable operation of the compressor, and extending its service life.

[0044] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A marine container variable frequency drive refrigeration compressor, characterized in that, include: Mounting base (2), the mounting base (2) has multiple annular grooves (3) evenly spaced along the circumference, each annular groove (3) is rotatably connected to a turntable (11), the multiple turntables (11) are supported by a buffer support mechanism, the buffer support mechanism supports a compressor housing (1). Each of the turntables (11) is provided with a horizontal buffer mechanism to limit the rotation speed of the turntable (11) by damping force; Each of the aforementioned annular grooves (3) is equipped with a damping force adaptive adjustment mechanism, which is used to autonomously adjust the damping force of the horizontal buffer mechanism.

2. The marine container variable frequency drive refrigeration compressor according to claim 1, characterized in that, The mounting base (2) is provided with a base plate (16), and the compressor housing (1) is fixedly connected to the upper surface of the base plate (16).

3. The marine container variable frequency drive refrigeration compressor according to claim 2, characterized in that, The buffer support mechanism includes: multiple first supports (12) and multiple second supports (13); Multiple first brackets (12) are respectively hinged to the side of the corresponding turntable (11) facing the base plate (16), and multiple second brackets (13) are equidistantly hinged to the side surface of the base plate (16) along the circumferential direction.

4. The marine container variable frequency drive refrigeration compressor according to claim 3, characterized in that, The buffer support mechanism also includes: multiple springs (14) and multiple dampers (15). Each of the two springs (14) and the two dampers (15) are in one-to-one correspondence and are respectively fixedly connected between the corresponding first bracket (12) and second bracket (13).

5. The marine container variable frequency drive refrigeration compressor according to claim 1, characterized in that, The horizontal buffer mechanism includes: multiple grooves (4) and multiple sliders (10); Multiple grooves (4) are equidistantly spaced along the circumference on the turntable (11), and multiple sliders (10) are slidably connected to the corresponding grooves (4).

6. The marine container variable frequency drive refrigeration compressor according to claim 5, characterized in that, The horizontal buffer mechanism also includes: multiple springs (8), multiple dampers (9), and multiple rubber blocks (7). Each spring (8) and damper (9) are paired together and fixedly connected to the upper surface of the corresponding slider (10), and the damper (9) is sleeved inside the spring (8). Multiple rubber blocks (7) are fixedly connected to the upper ends of each set of springs (8) and dampers (9) and abut against the inner wall of the annular groove (3).

7. The marine container variable frequency drive refrigeration compressor according to claim 6, characterized in that, The horizontal buffer mechanism also includes: a support rod and a counterweight plate (17). The support rod is fixedly connected to the lower surface of the base plate (16), and the counterweight plate (17) is fixedly connected to the lower end of the support rod. The counterweight plate (17) is located at the center of gravity of the compressor housing (1).

8. The marine container variable frequency drive refrigeration compressor according to claim 7, characterized in that, The damping force adaptive adjustment mechanism includes: a frame (18), multiple traction grooves (5), and multiple traction columns (6); The frame (18) is fixedly connected to the inner wall of the annular groove (3). Multiple traction grooves (5) are equidistantly opened on the frame (18) along the circumference. Multiple traction columns (6) are fixedly connected to the side surface of the corresponding slider (10) and slidably connected in the corresponding traction groove (5).

9. The marine container variable frequency drive refrigeration compressor according to claim 8, characterized in that, The traction groove (5) extends in an arc shape and the arc shape extends toward the outside of the annular groove (3).

10. The marine container variable frequency drive refrigeration compressor according to claim 1, characterized in that, The bottom of the mounting base (2) is provided with an anti-slip and shock-absorbing pad, which is fixedly connected to the lower surface of the mounting base (2) to improve the installation stability of the compressor in the marine container.

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