Gravity self-compensating marine vessel container refrigeration machine

Abstract

The application discloses a gravity self-compensating marine container refrigerating machine, and relates to the technical field of refrigerating machines.The technical problem that temperature control fluctuates due to the exposure of a liquid outlet caused by the shaking of refrigerant in a liquid accumulator in the container refrigerating machine is solved.The container refrigerating machine comprises a container body, a shell fixed to one side of the container body, a frame connected to the shell, a sliding frame arranged in the shell, a hook arranged above the sliding frame, a bearing block arranged below the sliding frame, a supporting plate connected to the sliding frame, a second fixing plate arranged on one side of the supporting plate, a fixing rod connected to the bottom of the second fixing plate, a ring connected to the bottom end of the fixing rod, a first pull rope and a second pull rope connected to the top of the second fixing plate, a supporting rod arranged in the liquid accumulator, and baffles rotatably connected to the supporting rod.The application can limit the refrigerant in the liquid accumulator, thereby reducing or avoiding the exposure time of the liquid outlet at the bottom of the liquid accumulator and reducing the frequency of the decline of the refrigeration effect.

Description

Technical Field

[0001] This invention relates to the field of refrigeration technology, specifically a gravity-compensated marine container refrigeration machine. Background Technology

[0002] Refrigeration units for marine containers are key equipment for refrigerated shipping. Their main function is to provide a precise and stable low-temperature environment for shipping containers carrying perishable goods, ensuring the quality of the goods during long-distance sea transport.

[0003] Existing ship container refrigeration units are usually integrated at one end of the container (end-mounted type) and include core components such as compressors, condensers, evaporators, expansion valves and liquid receivers.

[0004] When shipping containers transport chilled or frozen products, issues related to product preservation are frequently reported. After investigation and analysis, one reason is that ship container refrigeration units cannot maintain stability as consistently as those used on land. During operation at sea, especially when encountering wind and waves, the container (along with its refrigeration unit) will inevitably experience continuous, multi-directional swaying and turbulence.

[0005] When a ship rocks, the liquid refrigerant inside the tank will shake violently. This shaking may expose the outlet pipe inlet installed in the receiver to air, causing the refrigeration system to change from drawing in saturated liquid refrigerant to drawing in unsaturated or gaseous (with a small amount of liquid) refrigerant. Since the rocking motion of a ship on water is frequent and does not occur only once or a few times, it will reduce the refrigeration efficiency, cause temperature fluctuations inside the container, affect the preservation of cargo, and more seriously, the risk of the compressor drawing in a mixture of gas and liquid or pure gaseous refrigerant will increase sharply, which can easily lead to compressor damage.

[0006] Furthermore, the air supply design of traditional container refrigeration units is often quite crude, typically relying on one or a few air outlets to directly blow cold air into the container. This design may barely meet requirements in a static environment. Unlike household air conditioners, which have intelligent outlet adjustment, container refrigeration units are not suitable for container refrigeration units, primarily due to considerations of operational stability and durability. Intelligent air outlets are prone to wear, corrosion, and vibration during container operation. Therefore, most existing container refrigeration unit outlets are not adjustable, with some requiring manual adjustment. However, during several days of refrigerated transport at sea, especially when cargo is stacked and obstructs airflow, the refrigeration unit's outlets consistently blow air in one direction, easily leading to severely uneven temperature distribution in different areas of the container. Areas facing the air outlet may be too cold, potentially freezing the cargo; while areas away from the air outlet may be too hot, failing to meet the set requirements.

[0007] Based on this, the present invention provides a gravity-compensated marine container refrigeration unit to solve the above problems. Summary of the Invention

[0008] In view of the above situation and to overcome the defects of the prior art, the present invention provides a gravity self-compensating marine container refrigeration machine. The present invention has a novel structure and ingenious design, and effectively solves the technical problems of temperature control fluctuation caused by the refrigerant sloshing inside the liquid receiver of the container refrigeration machine, which leads to the exposure of the liquid outlet, and the air outlet of the container refrigeration machine always blowing directly.

[0009] A gravity-compensated marine container refrigeration unit includes a container body. An outer shell is fixedly connected to one side of the container body. The outer shell includes a control box, a condenser fan motor, a maintenance panel, a power cord storage area, an air-cooled condenser, a variable frequency compressor, a liquid receiver, an exhaust fan, and an evaporator. A frame is fixedly connected to the outer shell. A sliding frame is installed inside the outer shell. A sliding hook is installed above the sliding frame, and a load-bearing block is installed below the sliding frame. Two support plates are fixedly connected to one side of the sliding frame. Each of the two support plates has a second, liftable fixed plate on one side. A fixed rod is fixedly connected to the bottom of each of the two second fixed plates, and a hanging ring is fixedly connected to the bottom end of each of the two fixed rods. The two hanging rings respectively cooperate with the two sides of the hook. A first pull rope and a second pull rope are fixedly connected to the top of each of the two second fixed plates. A support rod is fixedly connected inside the liquid receiver, and a baffle is rotatably connected to the support rod. The other ends of the first and second pull ropes are connected to the baffle.

[0010] Preferably, there are two support rods, which are arranged vertically inside the liquid reservoir. Each support rod is rotatably connected to a baffle. The other ends of the first and second pull ropes are respectively connected to the two baffles, and a pull rod is rotatably connected between the two baffles.

[0011] Preferably, a mounting base is fixedly connected to one side of the inner wall of the outer shell, an "L"-shaped fixing base is fixedly connected to the mounting base, the sliding frame is fixedly connected to one side of the fixing base, a first sliding groove is formed in the sliding frame, a second sliding groove is formed at the top and bottom of the first sliding groove, a support is slidably connected in the two second sliding grooves, the hook is fixedly connected to the top of the support, a ball is rotatably connected in the support, the ball is slidably connected in the first sliding groove, a second connecting strip is fixedly connected to the bottom of the support, and the load-bearing block is fixedly connected to the bottom end of the second connecting strip.

[0012] Preferably, each of the two support plates has two rotating seats rotatably connected to its top near the sliding frame, and each of the two rotating seats has a first fixing plate fixedly connected to its side away from the support plate. The two second fixing plates are located below the two first fixing plates respectively. A bidirectional spring is provided between each of the two first fixing plates and the corresponding two second fixing plates. The first pull rope and the second pull rope are respectively threaded through the two bidirectional springs. The top of each of the two second fixing plates has two through rods fixedly connected, and the two through rods are slidably connected to the two first fixing plates respectively.

[0013] Preferably, one side of each of the two rotating seats rotates through two support plates and is fixedly connected to a rotating block. A torsion spring is provided between the support plates and the rotating blocks. A connecting rod is fixedly connected to the top of the side of each of the two support plates away from the first fixed plate. A limit frame is fixedly connected to the end of the connecting rod away from the support plate. The limit frame cooperates with the rotating block and limits the rotation block.

[0014] Preferably, the top of the frame is fixedly connected to multiple bearings, each bearing having a rotating shaft rotatably connected to it. Multiple first air guide plates and one second air guide plate are fixedly connected to the rotating shafts. Both the first and second air guide plates are located below the evaporator. Air guide grooves are provided on both sides of the first and second air guide plates. The second air guide plate is located between the multiple first air guide plates. Rotating frames are provided between the first and second air guide plates and between adjacent first air guide plates. The top of the frame is fixedly connected to two limiting rods located on both sides of the second air guide plate, limiting its movement.

[0015] Preferably, a fixed sleeve is fixedly connected to the top of the frame, a support shaft is rotatably connected inside the fixed sleeve, a circular support frame is fixedly connected to the top of the support shaft, a support block is fixedly connected to the surface of the support frame, a limit groove is formed in the support block, a limit block is slidably connected in the limit groove, a first spring is provided between the limit block and the limit groove, a push block is fixedly connected to the side of the limit block away from the support block, two baffles are fixedly connected to the bottom of the second air guide plate, and the support frame cooperates with the two baffles through the push block.

[0016] Preferably, a universal joint is fixedly connected to the bottom end of the support shaft, the universal joint is located within the frame, a first connecting belt is connected below the universal joint, and a gravity ball is fixedly connected to the bottom end of the first connecting belt.

[0017] Preferably, the control box and condenser fan motor are located inside the frame, the power cord storage area, the air-cooled condenser, the variable frequency compressor and the liquid receiver are located below the frame, a rear cover is fixedly connected to the rear side of the housing, the rear cover cooperates with the frame, two exhaust fans are provided on the top of the housing, and the evaporator is located below the two exhaust fans.

[0018] The present invention has the following technical effects.

[0019] 1. This invention, through the cooperation of a rolling ball, a load-bearing block, a first pull rope, and a baffle, can limit the refrigerant in the reservoir when the ship sways during navigation, thereby reducing or avoiding the exposure time of the liquid outlet at the bottom of the reservoir and reducing the frequency of cooling effect decline. At the same time, through the cooperation of structures such as hanging rings and hooks, the baffle can be driven to deflect in the corresponding direction in the reservoir when the ship sways in different directions, effectively limiting the refrigerant.

[0020] 2. The present invention uses a combination of rotating seat, rotating block, limiting frame and torsion spring to make the ball move back and forth in the sliding frame, thereby causing the bottom hanging ring to disengage from the hook and reset the hook, so as to facilitate the next engagement with the hanging ring.

[0021] 3. This invention uses a combination of a rotating shaft, a first air guide plate, a second air guide plate, and an air guide trough to make the cold air discharged from the container refrigeration unit more uniform. The second air guide plate is rotated back and forth by a support shaft, a first spring, a push block, and a stop bar, which changes the air outlet of the container refrigeration unit and increases the uniform distribution of cold air inside the container. The amplitude of the second air guide plate is limited by a limit rod, thereby better cooperating with the support frame.

[0022] 4. The present invention uses a rotating frame to enable the first air guide plate to rotate synchronously when the second air guide plate rotates, thereby more effectively and evenly guiding the cold air. Utilizing the gravity offset generated when the ship is rocking, the support frame is driven to rotate through the gravity ball, universal joint and support shaft, which in turn drives the second air guide plate to rotate back and forth. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of the container body and outer shell assembly structure in this invention;

[0025] Figure 2 This is a schematic diagram of the assembly structure of the outer casing, control box, and condenser fan motor in this invention;

[0026] Figure 3This is a schematic diagram of the assembly structure of the outer shell and the rear cover plate in this invention;

[0027] Figure 4 This is a schematic diagram of the assembly structure of the liquid reservoir and the baffle in this invention;

[0028] Figure 5 This is a schematic diagram of the assembly structure of the baffle, the first pull rope, and the second pull rope in this invention;

[0029] Figure 6 This is a schematic diagram of the assembly structure of the mounting base, the fixed base, and the sliding frame in this invention;

[0030] Figure 7 This is a schematic diagram of the assembly structure of the sliding frame, the ball, the first fixing plate, and the second fixing plate in this invention;

[0031] Figure 8 This is a schematic diagram of the assembly structure of the torsion spring, rotating block and limiting frame in this invention;

[0032] Figure 9 This is a schematic diagram of the assembly structure of the bearing, shaft and first air guide plate in this invention;

[0033] Figure 10 This is a schematic diagram of the assembly structure of the first air guide plate, the second air guide plate, and the rotating frame in this invention;

[0034] Figure 11 This is a schematic diagram of the assembly structure of the support frame and the limiting rod in this invention;

[0035] Figure 12 This is the present invention. Figure 11 Enlarged structural diagram of section A in the middle;

[0036] Figure 13 This is a schematic diagram of the assembly structure of the universal joint, the first connecting belt, and the gravity ball in this invention.

[0037] Reference numerals: 1-Container body; 2-Outer shell; 3-Frame; 4-Control box; 5-Condenser fan motor; 6-Inspection panel; 7-Power cord storage area; 8-Air-cooled condenser; 9-Variable frequency compressor; 10-Liquid receiver; 11-Exhaust fan; 12-Evaporator; 13-Rear cover; 14-Bearing; 15-Rotating shaft; 16-First air guide plate; 17-Air guide groove; 18-Second air guide plate; 19-Rotating frame; 20-Block; 21-Limiting rod; 22-Fixing sleeve; 23-Support shaft; 24-Support frame; 25-Support block; 26-Limiting groove; 27-Limiting block; 28-First spring; 29-Push block; 3 0-Universal joint; 31-First connecting belt; 32-Gravity ball; 33-Support rod; 34-Baffle; 35-Mounting seat; 36-Fixed seat; 37-Sliding frame; 38-First slide groove; 39-Rolling ball; 40-Support; 41-Second connecting belt; 42-Bearing block; 44-Second slide groove; 45-Hook; 46-Support plate; 47-Rotating seat; 48-First fixed plate; 49-Two-way spring; 50-First pull rope; 51-Second fixed plate; 52-Fixed rod; 53-Hanging ring; 54-Through rod; 55-Second pull rope; 56-Rotating block; 57-Connecting rod; 58-Limiting frame; 59-Torsion spring; 60-Pull rod. Detailed Implementation

[0038] The foregoing and other technical contents, features and effects of the present invention are described in conjunction with the appendix below. Figures 1 to 13 The detailed description of the embodiments will make this clear. All references to the following embodiments are made with reference to the accompanying drawings.

[0039] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.

[0040] This invention relates to a gravity-compensated marine container refrigeration unit. Existing container refrigeration units are susceptible to damage due to the violent shaking of the liquid refrigerant in the reservoir caused by the ship's rocking. This could lead to the exposure of the liquid outlet, causing the refrigeration system to draw in gaseous refrigerant, resulting in a significant decrease in refrigeration efficiency and the risk of compressor damage.

[0041] The cold air blown into the container is always blowing directly inside, which causes frost damage to goods facing the air outlet and incomplete freezing of goods that are off the air outlet.

[0042] As an example, such as Figures 1 to 8As shown, the present invention includes a container body 1, with an outer shell 2 fixedly connected to one side of the container body 1. The outer shell 2 includes a control box 4, a condenser fan motor 5, a maintenance panel 6, a power cord storage area 7, an air-cooled condenser 8, a variable frequency compressor 9, a liquid receiver 10, an exhaust fan 11, and an evaporator 12. An inlet pipe and an outlet pipe are inserted and installed from top to bottom inside the liquid receiver 10. A frame 3, which is rectangular, is fixedly connected to the outer shell 2 and is located at the center of the outer shell 2. A sliding frame 37 is provided inside the outer shell 2, located on one side behind the liquid receiver 10. A partition separates the sliding frame 37 from the liquid receiver 10. The sliding frame 37 is rectangular, with a sliding "T"-shaped hook 45 on its upper part and a load-bearing block 42 on its lower part. Two support plates 46, both rectangular, are fixedly connected to one side of the sliding frame 37. A second, liftable fixed plate 51 is provided on one side of each support plate 46. Both second fixing plates 51 are circular, and both second fixing plates 51 are fixedly connected to the bottom of each fixing rod 52. Both fixing rods 52 are fixedly connected to the bottom end of each fixing rod 52. The two hanging rings 53 are respectively engaged with the two sides of the hook 45. The top of the two second fixing plates 51 are respectively fixedly connected to the first pull rope 50 and the second pull rope 55. The first pull rope 50 and the second pull rope 55 pass through the partition inside the outer shell 2 and are located inside the liquid reservoir 10. There is a sealing gasket at the installation point of the first pull rope 50 and the second pull rope 55 with the outer shell 2. A support rod 33 is fixedly connected inside the liquid reservoir 10. A baffle 34 is rotatably connected to the support rod 33. The baffle 34 is circular. Both ends of the baffle 34 have notches that cooperate with the inlet pipe and the outlet pipe. The baffle 34 cooperates with the inner wall of the liquid reservoir 10. A rubber pad is provided on the surface of the baffle 34 to ensure that the baffle 34 can rotate inside the liquid reservoir 10. The other end of the first pull rope 50 and the second pull rope 55 is fixedly connected to the baffle 34.

[0043] In this embodiment, when the ship rocks, the container refrigeration unit shakes, causing the load-bearing block 42 to move laterally below the sliding frame 37. This causes the hook 45 above the sliding frame 37 to move to one side of the sliding frame 37, inserting the hook 45 into the hanging ring 53 on that side, connecting them as a whole. This, in turn, pulls the fixing rod 52 to tilt and rotate, then drives the second fixing plate 51 to move diagonally downward. Through the second fixing plate 51, the first pull rope 50 or the second pull rope 55 is pulled down. The first pull rope 50 or the second pull rope 55 pulls the baffle 34. The first pull rope 50 and the second pull rope 55 are connected to the baffle 34. When pulled, the baffle 34 rotates on the support rod 33. The baffle 34 rotates inside the liquid receiver 10 to limit the refrigerant shaking inside the liquid receiver 10. For different shaking directions, the baffle 34 rotates in the corresponding direction to block and limit the refrigerant, reducing or avoiding the exposure time of the liquid outlet, reducing or avoiding the decrease in cooling effect, or even damage to the compressor.

[0044] Initially, baffle 34 is tilted to ensure it does not obstruct the normal flow of refrigerant within the receiver 10. The receiver 10 is symmetrically equipped with inlet and outlet pipes. Figure 7 For example, when the refrigeration unit shakes, causing the load-bearing block 42 to move to the right, the hook 45 moves to the right, driving the hanging ring 53 to move to the right. Then, the first pull rope 50 is pulled by the fixed rod 52 and the second fixed plate 51. At the same time, the refrigerant in the liquid receiver 10 tilts, impacts, and splashes to the right. At this time, the first pull rope 50 pulls the left side of the baffle 34, causing the baffle 34 to rotate to the right, blocking the refrigerant that tilts and impacts to the right. At the same time, it reduces the range of movement of the refrigerant impacting the upper right side in this direction, thereby reducing or avoiding the exposure of the liquid outlet pipe due to the tilting and impact of the refrigerant, and reducing the frequent and large-scale temperature fluctuations of the refrigerant.

[0045] As one embodiment, two support rods 33 are fixedly connected inside the liquid reservoir 10. The two support rods 33 are distributed vertically inside the liquid reservoir 10. Each of the two support rods 33 is rotatably connected to a baffle 34. Both baffles 34 are circular. Both ends of the baffles 34 are also provided with notches that cooperate with the inlet pipe and the outlet pipe. The baffles 34 cooperate with the inner wall of the liquid reservoir 10. A rubber pad is provided on the surface of the baffles 34 to ensure that the baffles 34 can rotate inside the liquid reservoir 10. The other ends of the first pull rope 50 and the second pull rope 55 are fixedly connected to the two baffles 34 respectively. A pull rod 60 is rotatably connected between the two baffles 34.

[0046] There are several ways to install the baffle 34. In order to prevent the baffle 34 from obstructing the normal flow of refrigerant, the baffle 34 is tilted in the initial position.

[0047] Example 1 of installing two baffles 34:

[0048] The two baffles 34 are initially installed in parallel, and the pull rod 60 is hinged at an angle (i.e., one end is hinged to the left side of the baffle 34 and the other end is hinged to the right side of the baffle 34). There are displacement springs at both ends of the hinge of the pull rod 60. The refrigerant is limited by the upper baffle 34 and the lower baffle 34 rotating in opposite directions, ensuring that at least one baffle 34 limits the impact of the refrigerant.

[0049] Example 2 of installing two baffles 34:

[0050] The two baffles 34 are initially installed in parallel, and the pull rod 60 is hinged at an angle (i.e., the pull rod 60 is hinged on one side of the baffle 34). There are displacement springs at both ends of the hinged pull rod 60. The refrigerant is limited by the fact that the upper baffle 34 and the lower baffle 34 rotate in the same direction, and the two baffles 34 limit the impact of the refrigerant.

[0051] Example 3 of installing two baffles 34:

[0052] The two baffles 34 are initially installed in an alternating manner (i.e., with opposite tilt angles), and the pull rod 60 is tilted and hinged (i.e., the pull rod 60 is hinged on one side of the baffle 34). There are displacement springs at both ends of the hinged pull rod 60. The refrigerant is limited by the fact that the upper baffle 34 and the lower baffle 34 rotate in the same direction, and the two baffles 34 limit the impact of the refrigerant.

[0053] Example 4 of installing two baffles 34:

[0054] The two baffles 34 are initially installed in an alternating manner (i.e., with opposite tilt angles), and the pull rod 60 is tilted and hinged (i.e., one end is hinged to the left side of the baffle 34 and the other end is hinged to the right side of the baffle 34). There are displacement springs at both ends of the hinged pull rod 60. The refrigerant is limited by the upper baffle 34 and the lower baffle 34 rotating in opposite directions, ensuring that at least one baffle 34 limits the impact of the refrigerant.

[0055] Taking the fourth embodiment of the installation of two baffles 34 as an example, in this embodiment, when the ship rocks, the container refrigeration unit shakes, thereby causing the load-bearing block 42 to move laterally below the sliding frame 37, pulling the first pull rope 50 down or pulling the second pull rope 55 down. The first pull rope 50 or the second pull rope 55 pulls the two baffles 34. The first pull rope 50 is connected to the upper baffle 34, and the second pull rope 55 passes through the upper baffle 34 and is connected to the lower baffle 34. Through the rotation of the pull rod 60, the two baffles 34 rotate in opposite directions, causing the baffles 34 to rotate on the support rod 33. The baffles 34 rotate in the liquid receiver 10 to limit the refrigerant shaking in the liquid receiver 10. For different shaking directions, they block and limit the refrigerant, reduce or avoid the exposure of the liquid outlet, reduce or avoid the decrease in cooling effect, or even damage to the compressor.

[0056] As the refrigerant is consumed, the two baffles 34 can adapt to different liquid levels in the receiver 10.

[0057] When the refrigerant tilts or impacts due to shaking, such as Figure 5 and Figure 7 As shown, if the refrigerant tilts to the right, pulling the first pull rope 50 causes the upper baffle 34 to tilt downwards on the right side to block it, while the lower baffle 34 can also rotate upwards on the right side to block it. If the refrigerant tilts to the left, pulling the second pull rope 55 causes the lower baffle 34 to rotate downwards on the left side to block it, while the upper baffle 34 can also rotate upwards on the left side to block it. This limits the fluctuation and impact of the refrigerant, reduces the exposure time of the liquid outlet, and reduces frequent and large-scale temperature fluctuations of the refrigerant.

[0058] As an example, such as Figure 6 and Figure 7As shown, a mounting base 35 is fixedly connected to the partition between the liquid reservoir 10 and the sliding frame 37 inside the outer shell 2. An "L"-shaped fixing base 36 is fixedly connected to the mounting base 35. The sliding frame 37 is fixedly connected to one side of the fixing base 36. A first sliding groove 38 is opened inside the sliding frame 37. A second sliding groove 44 is opened at the top and bottom of the first sliding groove 38 and placed on the sliding frame 37. Both second sliding grooves 44 are rectangular. A support 40 is slidably connected inside the two second sliding grooves 44. The support 40 is annular. The top and bottom of the support 40 are respectively located in the two second sliding grooves 44 for limiting. A hook 45 is fixedly connected to the top of the support 40. A ball 39 is rotatably connected inside the support 40. The ball 39 is slidably connected in the first sliding groove 38. A second connecting band 41 is fixedly connected to the bottom of the support 40. A load-bearing block 42 is fixedly connected to the bottom end of the second connecting band 41.

[0059] In this embodiment, when the ship rocks, the bottom load-bearing block 42 moves towards the sliding frame 37, and the second connecting belt 41 pulls the ball 39 to move laterally along the first sliding groove 38. When the ball 39 slides, it drives the support 40 to move in the second sliding groove 44, thereby causing the top hook 45 to move to the same side. The first sliding groove 38 restricts the ball 39 to move only laterally to ensure directional stability. When the hook 45 moves, it pulls the first pull rope 50 or the second pull rope 55 to descend, driving the baffle 34 to rotate, thereby blocking and limiting the refrigerant in the liquid reservoir 10.

[0060] As an example, such as Figures 7 to 8 As shown, two rotating seats 47 are rotatably connected to the top of the two support plates 46 near the sliding frame 37. Both rotating seats 47 are cylindrical. A first fixing plate 48 is fixedly connected to the side of the two rotating seats 47 away from the support plate 46. Both first fixing plates 48 have circular through holes. The first pull rope 50 and the second pull rope 55 pass through the two through holes respectively. Two second fixing plates 51 are located below the two first fixing plates 48 respectively. A bidirectional spring 49 is provided between the two first fixing plates 48 and the corresponding second fixing plates 51. The first pull rope 50 and the second pull rope 55 are respectively passed through the two bidirectional springs 49. A through rod 54 is fixedly connected to the top of the two second fixing plates 51 respectively. The two through rods 54 are slidably connected to the two first fixing plates 48 respectively.

[0061] In this embodiment, when the load-bearing block 42 pulls the fixing rod 52 to tilt and move, the fixing rod 52 drives the second fixing plate 51 to rotate around the rotating seat 47. At the same time, the second fixing plate 51 stretches the bidirectional spring 49. While the rotating seat 47 is rotating, the second fixing plate 51 pulls the first pull rope 50 or the second pull rope 55 to change the state of the baffle 34. When the load-bearing block 42 moves in the opposite direction or resets due to shaking, it moves in the opposite direction or resets under the action of the weight of the load-bearing block 42 and the bidirectional spring 49.

[0062] As an example, such as Figure 7 and Figure 8 As shown, one side of each of the two rotating seats 47 rotates through the two support plates 46 and is fixedly connected to a rotating block 56. The rotating block 56 is fan-shaped. A torsion spring 59 is sleeved on the rotating seat 47 between the support plate 46 and the rotating block 56. A connecting rod 57 is fixedly connected to the top of the side of each of the two support plates 46 away from the first fixed plate 48. A limit frame 58 is fixedly connected to the end of the connecting rod 57 away from the support plate 46. The limit frame 58 is semi-circular. The rotating block 56 and the limit frame 58 are located on the same center line. The limit frame 58 cooperates with the rotating block 56 and limits the rotation block 56.

[0063] In this embodiment, when the second fixed plate 51 descends obliquely, it pulls the first fixed plate 48 to rotate around the rotating seat 47, causing the torsion spring 59 to accumulate torsional potential energy. When the swaying direction changes, the torsion spring 59 and the bidirectional spring 49 release energy, driving the rotating seat 47 to rotate in the opposite direction, causing the first fixed plate 48 to reset and rotate. When the rotating seat 47 rotates, it drives the rotating block 56 to rotate synchronously. The limit frame 58 mechanically stops the rotating block 56, limiting the torsion angle of the torsion spring 59 and preventing overload damage.

[0064] As an example, such as Figure 9 and Figure 10 As shown, multiple bearings 14 are fixedly connected to the top of the frame 3. Each bearing 14 has a rotating shaft 15 rotatably connected to it. Multiple first air guide plates 16 and one second air guide plate 18 are fixedly connected to each rotating shaft 15. The second air guide plate 18 is located at the center of the multiple first air guide plates 16. The first air guide plates 16 and the second air guide plate 18 have the same shape. Both the first air guide plates 16 and the second air guide plate 18 are located below the evaporator 12. Air guide grooves 17 are provided on both sides of the first air guide plates 16 and 18. A rotating frame 19 is provided between the two second air guide plates 18 on both sides and between two adjacent second air guide plates 18. Multiple first air guide plates 16 and second air guide plates 18 are rotatably connected through the rotating frame 19. For example, a push plate is installed at the hinge of the rotating frame 19 and the first air guide plate 16 and the second air guide plate 18, so that multiple first air guide plates 16 and one second air guide plate 18 can rotate synchronously. Two limiting rods 21 are fixedly connected to the top of the frame 3. The two limiting rods 21 are located on both sides of the second air guide plate 18 and limit the second air guide plate 18.

[0065] In this embodiment, the cold air after passing through the evaporator 12 first flows through the first air guide plate 16 and the second air guide plate 18 into the container. The air guiding effect is optimized by the air guide groove 17. The first air guide plate 16 and the second air guide plate 18 are tilted by the rotating shaft 15 on the bearing 14, thereby adjusting the angle of the air blowing onto the container. The first air guide plate 16 and the second air guide plate 18 can rotate synchronously by the rotating frame 19. The rotation angle of the second air guide plate 18 is limited by the limiting rod 21, so that the first air guide plate 16 can maintain the same angle as the second air guide plate 18.

[0066] As an example, such as Figures 10 to 13 As shown, a fixed sleeve 22 is fixedly connected to the top of the frame 3. The fixed sleeve 22 is annular. A support shaft 23 is rotatably connected inside the fixed sleeve 22. The top of the support shaft 23 passes through the top of the frame 3 and is fixedly connected to a circular support frame 24. A support block 25 is fixedly connected to the surface of the support frame 24. The support block 25 is trapezoidal. A limit groove 26 is opened on the side of the support block 25 away from the support frame 24. The limit groove 26 is rectangular. Limit blocks 27 are slidably connected inside the limit groove 26. All limit blocks 27 are rectangular. A first spring 28 is provided between the limit block 27 and the limit groove 26. A push block 29 is fixedly connected to the side of the limit block 27 away from the support block 25. The end of the push block 29 is arc-shaped. Two baffles 20 are fixedly connected to the bottom of the second air guide plate 18. The support frame 24 cooperates with the two baffles 20 through the push block 29.

[0067] In this embodiment, when the support shaft 23 rotates within the fixed sleeve 22, it drives the top support frame 24 and its support block 25 to rotate together. The support block 25 drives the push block 29 to rotate synchronously through the limiting block 27. As the support frame 24 continues to rotate, the push block 29 on one side of the support frame 24 will contact and abut against a stop bar 20 on the second air guide plate 18. This contact force pushes the second air guide plate 18 and its rotating shaft 15 to rotate to one side within the bearing 14. For example, assuming a clockwise direction, after the second air guide plate 18 rotates a certain angle, it will be blocked by the limiting rod 21 and stop. At this time, since the support frame 24 is still driving the push block 29 to try to continue moving forward, but the second air guide plate 18 has been fixed by the limiting rod 21, blocking the movement path of the push block 29, the push block 29 is forced to overcome the resistance and move towards the support block 25, that is, relative displacement occurs, driving the limiting block 27 connected to it along the limiting groove 2. 6. Sliding compresses the first spring 28 located in the limiting groove 26. As the support frame 24 continues to rotate, the pushing block 29 eventually slides past and over the blocked stop bar 20, releasing the elastic potential energy stored in the compressed first spring 28. The reaction force of the first spring 28 pushes the limiting block 27 to slide away from the support block 25, thereby causing the pushing block 29 to automatically spring back to its initial position. The support frame 24 continues to rotate, causing the pushing block 29 to continue rotating and contact another stop bar 20 below the second air guide plate 18, pushing the second air guide plate 18 to rotate in the opposite direction, changing to a counterclockwise direction, until the second air guide plate 18 rotates and contacts another limiting bar 21, blocking and limiting the second air guide plate 18, until the pushing block 29 passes the stop bar 20 again, realizing continuous use in a cycle. The blocking effect of the limiting bar 21 ultimately achieves the angular limitation of the second air guide plate 18 in two rotation directions.

[0068] It should be emphasized that when the second air guide plate 18 rotates, the rotation range of the baffle 20 is within the range of the rotation of the push block 29.

[0069] It should be noted that the above embodiment is only one of the embodiments. Because the swaying of the ship during operation is uncontrollable, the above embodiment is equivalent to an embodiment of an extreme state. If this embodiment can be implemented normally, the embodiments in other situations can also be implemented.

[0070] It should also be noted that since the existing container refrigeration units all have a single air outlet or a manually adjustable air outlet, this embodiment can increase the air outlet angle on the basis of the original air outlet, thereby increasing the uniformity of the air outlet blowing on the product. This uniformity does not mean a regular rotation at a uniform angle.

[0071] As an example, such as Figure 2 , Figure 3 and Figure 13As shown, a universal joint 30 is fixedly connected to the bottom end of the support shaft 23. The universal joint 30 is located inside the frame 3. A first connecting belt 31 is connected below the universal joint 30. A gravity ball 32 is fixedly connected to the bottom end of the first connecting belt 31. The control box 4 and the condenser fan motor 5 are located inside the frame 3. The power cord storage area 7, the air-cooled condenser 8, the variable frequency compressor 9, and the liquid receiver 10 are located below the frame 3. A rear cover plate 13 is fixedly connected to one side of the outer casing 2. The rear cover plate 13 cooperates with the frame 3. Two exhaust fans 11 are provided on the top of the outer casing 2. The evaporator 12 is located below the two exhaust fans 11.

[0072] In this embodiment, when the container shakes, the refrigerant shakes, which in turn causes the gravity ball 32 to shake. Through the universal joint 30, the support shaft 23 rotates within the fixed sleeve 22, thereby causing the support shaft 23 to rotate and causing the first air guide plate 16 and the second air guide plate 18 at the top to rotate, thus guiding the cold air.

[0073] Working principle of this invention:

[0074] During use, when the ship sways, the load-bearing block 42 below the sliding frame 37 slides to one side, causing the ball bearing 39 to slide within the sliding frame 37. The ball bearing 39 is then hooked onto a hanging ring 53 on one side via a hook 45 at the top of the support 40. This pulls the first fixed plate 48 to rotate, causing the second fixed plate 51 to move away from the first fixed plate 48 above it, stretching the bidirectional spring 49. Conversely, the load-bearing block 42 slides to the other side, causing the hook 45 to disengage from the hanging ring 53 and hook onto another hanging ring 53, pulling the second fixed plate 51. This pulls either the first pull rope 50 or the second pull rope 55, causing the baffle 34 to rotate clockwise or counterclockwise on the support rod 33. This prevents the refrigerant from impacting the liquid receiver 10 during swaying, reducing the impact range of the refrigerant swaying and minimizing the exposure time of the liquid outlet in the liquid receiver 10, thereby minimizing or avoiding a decrease in cooling effect.

[0075] When the direction of movement of the load-bearing block 42 changes, the second fixed plate 51 is reset by the bidirectional spring 49. When the second fixed plate 51 tilts and descends, the first fixed plate 48 rotates in coordination with the second fixed plate 51. When the rotating seat 47 rotates, the rotating block 56 rotates synchronously, and the rotating block 56 is limited by the limiting frame 58.

[0076] When the container shakes, the gravity ball 32 shakes, which in turn causes the support shaft 23 to rotate within the fixed sleeve 22 via the universal joint 30. This causes the top support frame 24 to rotate, and the push block 29 contacts the stop bar 20 below the second air guide plate 18, pushing the second air guide plate 18 to rotate to one side. After the second air guide plate 18 is blocked by the limit bar 21, the push block 29 compresses the first spring 28 and disengages from the stop bar 20. After disengagement, as the support frame 24 continues to rotate, the push block 29 contacts the stop bar 20 on the other side, pushing the second air guide plate 18 to rotate in the opposite direction. This allows the second air guide plate 18 to rotate repeatedly, and the rotating frame 19 drives the first air guide plate 16 to rotate synchronously and repeatedly, guiding the cold air.

[0077] The rotation direction of the first air guide plate 16 and the second air guide plate 18 is specifically determined by the swaying direction of the ship during operation. Regardless of the swaying direction of the ship during operation, the outlet direction of the refrigeration unit can be changed, thereby changing the existing single outlet situation of the refrigeration unit. Furthermore, no electronic components are used, making it suitable for the application environment during ship transportation. It is durable, stable, reliable, easy to maintain, and has a lower cost.

[0078] The present invention has the following technical effects.

[0079] 1. The present invention, through the cooperation of the rolling ball 39, the load-bearing block 42, the first pull rope 50 and the baffle 34, can limit the refrigerant in the liquid reservoir 10 when the ship is rocking, thereby reducing or avoiding the exposure time of the liquid outlet at the bottom of the liquid reservoir 10 and reducing the frequency of the cooling effect decline. At the same time, through the cooperation of the hanging ring 53, the hook 45 and other structures, when the ship is rocking in different directions, the baffle 34 can be driven to deflect in the corresponding direction in the liquid reservoir 10 to effectively limit the refrigerant.

[0080] 2. The present invention uses the rotating seat 47, rotating block 56, limiting frame 58 and torsion spring 59 to make the ball 39 move back and forth in the sliding frame 37, thereby causing the bottom hanging ring 53 to disengage from the hook 45 and reset the hook 45, so that it can be easily engaged with the hanging ring 53 again next time.

[0081] 3. The present invention, through the cooperation of the rotating shaft 15, the first air guide plate 16, the second air guide plate 18 and the air guide groove 17, makes the cold air discharged by the container refrigeration unit more uniform. Through the support shaft 23, the first spring 28, the push block 29 and the stop bar 20, the second air guide plate 18 is rotated back and forth, changing the air outlet of the container refrigeration unit and increasing the uniform distribution of cold air in the container. Through the limiting rod 21, the amplitude of the second air guide plate 18 is limited, thereby better cooperating with the support frame 24.

[0082] 4. The present invention uses a rotating frame 19 to enable the first air guide plate 16 to rotate synchronously when the second air guide plate 18 rotates, thereby more effectively and evenly guiding the cold air. Utilizing the gravity offset generated when the ship is rocking, the support frame 24 is driven to rotate through the gravity ball 32, universal joint 30 and support shaft 23, which in turn drives the second air guide plate 18 to rotate back and forth.

[0083] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gravity-compensated marine container refrigeration unit, comprising a container body (1), wherein a shell (2) is fixedly connected to one side of the container body (1), and the shell (2) includes a control box (4), a condenser fan motor (5), a maintenance panel (6), a power cord storage area (7), an air-cooled condenser (8), a variable frequency compressor (9), a liquid receiver (10), an exhaust fan (11), and an evaporator (12), characterized in that, A frame (3) is fixedly connected to the outer shell (2). A sliding frame (37) is provided inside the outer shell (2). A sliding hook (45) is provided above the sliding frame (37). A load-bearing block (42) is provided below the sliding frame (37). Two support plates (46) are fixedly connected to one side of the sliding frame (37). A second fixed plate (51) that can be raised and lowered is provided on one side of each of the two support plates (46). A fixed rod (52) is fixedly connected to the bottom of each of the two second fixed plates (51). 2) The bottom end of each of the two hanging rings (53) is fixedly connected to the two sides of the hook (45). The top of the two second fixing plates (51) is fixedly connected to the first pull rope (50) and the second pull rope (55). The reservoir (10) is fixedly connected to the support rod (33). The support rod (33) is rotatably connected to the baffle (34). The other end of the first pull rope (50) and the second pull rope (55) is connected to the baffle (34). The baffle (34) rotates in the corresponding direction for different shaking directions.

2. A gravity-compensated marine container refrigeration unit according to claim 1, characterized in that, There are two support rods (33), which are arranged vertically inside the reservoir (10). Each support rod (33) is rotatably connected to a baffle (34). The other ends of the first pull rope (50) and the second pull rope (55) are respectively connected to the two baffles (34). A pull rod (60) is rotatably connected between the two baffles (34).

3. A gravity-compensated marine container refrigeration unit according to claim 1, characterized in that, A mounting base (35) is fixedly connected to one side of the inner wall of the outer shell (2). An "L"-shaped fixing base (36) is fixedly connected to the mounting base (35). The sliding frame (37) is fixedly connected to one side of the fixing base (36). A first sliding groove (38) is opened in the sliding frame (37). A second sliding groove (44) is opened at the top and bottom of the first sliding groove (38). A support (40) is slidably connected in the two second sliding grooves (44). The hook (45) is fixedly connected to the top of the support (40). A ball (39) is rotatably connected in the support (40). The ball (39) is slidably connected in the first sliding groove (38). A second connecting band (41) is fixedly connected to the bottom of the support (40). The load-bearing block (42) is fixedly connected to the bottom end of the second connecting band (41).

4. A gravity-compensated marine container refrigeration unit according to claim 1, characterized in that, Two rotating seats (47) are rotatably connected to the top of the two support plates (46) near the sliding frame (37). A first fixing plate (48) is fixedly connected to the side of the two rotating seats (47) away from the support plate (46). Two second fixing plates (51) are located below the two first fixing plates (48). A bidirectional spring (49) is provided between the two first fixing plates (48) and the corresponding two second fixing plates (51). The first pull rope (50) and the second pull rope (55) are respectively passed through the two bidirectional springs (49). Two through rods (54) are fixedly connected to the top of the two second fixing plates (51). The two through rods (54) are slidably connected to the two first fixing plates (48).

5. A gravity-compensated marine container refrigeration unit according to claim 4, characterized in that, One side of each of the two rotating seats (47) rotates through the two support plates (46) and is fixedly connected to a rotating block (56). A torsion spring (59) is provided between the support plate (46) and the rotating block (56). A connecting rod (57) is fixedly connected to the top of the side of the two support plates (46) away from the first fixed plate (48). A limit frame (58) is fixedly connected to the end of the connecting rod (57) away from the support plate (46). The limit frame (58) cooperates with the rotating block (56) and limits the rotation block (56).

6. A gravity-compensated marine container refrigeration unit according to claim 1, characterized in that, The top of the frame (3) is fixedly connected to multiple bearings (14), and each of the multiple bearings (14) is rotatably connected to a rotating shaft (15). Multiple first air guide plates (16) and a second air guide plate (18) are fixedly connected to the multiple rotating shafts (15). The first air guide plates (16) and the second air guide plates (18) are both located below the evaporator (12). Air guide grooves (17) are provided on both sides of the first air guide plates (16) and the second air guide plates (18). The second air guide plate (18) is located between the multiple first air guide plates (16). A rotating frame (19) is provided between the first air guide plates (16) and the second air guide plates (18) and between two adjacent first air guide plates (16). The top of the frame (3) is fixedly connected to two limiting rods (21). The two limiting rods (21) are located on both sides of the second air guide plate (18) and limit the second air guide plate (18).

7. A gravity-compensated marine container refrigeration unit according to claim 6, characterized in that, A fixed sleeve (22) is fixedly connected to the top of the frame (3). A support shaft (23) is rotatably connected inside the fixed sleeve (22). A circular support frame (24) is fixedly connected to the top of the support shaft (23). A support block (25) is fixedly connected to the surface of the support frame (24). A limit groove (26) is opened inside the support block (25). A limit block (27) is slidably connected inside the limit groove (26). A first spring (28) is provided between the limit block (27) and the limit groove (26). A push block (29) is fixedly connected to the side of the limit block (27) away from the support block (25). Two baffles (20) are fixedly connected to the bottom of the second air guide plate (18). The support frame (24) cooperates with the two baffles (20) through the push block (29).

8. A gravity-compensated marine container refrigeration unit according to claim 7, characterized in that, The bottom end of the support shaft (23) is fixedly connected to a universal joint (30), the universal joint (30) is located inside the frame (3), and a first connecting belt (31) is connected below the universal joint (30), and a gravity ball (32) is fixedly connected to the bottom end of the first connecting belt (31).

9. A gravity-compensated marine container refrigeration unit according to claim 1, characterized in that, The control box (4) and the condenser fan motor (5) are located inside the frame (3). The power cord storage area (7), the air-cooled condenser (8), the variable frequency compressor (9) and the liquid receiver (10) are located below the frame (3). A rear cover plate (13) is fixedly connected to the rear side of the outer shell (2). The rear cover plate (13) cooperates with the frame (3). Two exhaust fans (11) are provided on the top of the outer shell (2). The evaporator (12) is located below the two exhaust fans (11).

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