Low-temperature refrigeration cabin for a pelagic fishing vessel

Abstract

The application discloses a low-temperature refrigeration cabin of a marine fishing vessel, which comprises a refrigeration cabin and a flat freezing rack arranged in the refrigeration cabin, wherein the flat freezing rack comprises a support and a freezing flat, the freezing flat is arranged in the support in a longitudinal direction, the freezing flat is provided with freezing pipes, a horizontal lifting plate is arranged below the freezing flat, the freezing flat is provided with air-avoiding holes in a spaced manner, a vertical top plate is arranged on the horizontal lifting plate, the vertical top plate is arranged in the air-avoiding hole and is in sliding cooperation with the air-avoiding hole, the bottom of the horizontal lifting plate is connected with a manual jacking mechanism which can make the horizontal lifting plate lift up and down, when the horizontal lifting plate is lowered to the bottom end of the stroke, the vertical top plate is arranged in the air-avoiding hole and the top end of the vertical top plate is retracted into the air-avoiding hole, when the horizontal lifting plate is lowered to the top end of the stroke, the vertical top plate is arranged in the air-avoiding hole and the top end of the vertical top plate is protruded out of the air-avoiding hole. The application has the advantages of compact structure, uniform temperature in the cabin, convenient fish plate taking and high fish unloading speed.

Description

Technical Field

[0001] This invention relates to a refrigerated compartment, and more particularly to a low-temperature refrigerated compartment for a marine fishing vessel. Background Technology

[0002] On fishing vessels, to ensure the quality of the catch as much as possible, the catch must be quickly sorted and frozen after being brought aboard. The frozen catch then needs to be transferred to a low-temperature cold storage compartment for preservation at a low temperature (below -18°C). Existing low-temperature cold storage compartments typically include a cold storage compartment and freezer racks placed inside the cold storage compartment. Multiple layers of fish trays are placed on the freezer racks, and the catch is placed in the fish trays.

[0003] For example, Chinese patent application publication number CN113883802A, published on January 4, 2022, discloses an ultra-low temperature freezing chamber for fish caught by a marine fishing vessel, including a freezing chamber and a freezing rack. The freezing chamber is provided with a left partition, a right partition, and an upper partition. The left partition, the right partition, and the upper partition together form a freezing room. The gap between the left partition, the right partition and the freezing chamber forms a left air duct and a right air duct. The left partition and the right partition are provided with air inlets. The gap between the upper partition and the freezing chamber forms an axial flow fan installation chamber. An axial flow fan is provided in the axial flow fan installation chamber. The axial flow fan installation chamber is connected to the left air duct and the right air duct. The freezing rack includes a support frame and a shelf. A refrigerant evaporation coil is provided below the shelf. A lifting mechanism is provided inside the shelf. The freezer compartment has the following defects: (1) The lifting mechanism includes a rotating shaft cavity, rotating shaft, top column and through hole, etc. When in use, the rotating shaft needs to be rotated, and the top column is lifted by the spherical top block, so that the top column extends out of the shelf and lifts the quick-freezing tray. When the quick-freezing tray and the shelf are frozen together, the rotating shaft is actually difficult to rotate, which is laborious and requires rotating the rotating shaft separately, which is very inconvenient to use; (2) The contact area between each top column and the quick-freezing tray is small, making it difficult to lift the quick-freezing tray completely, which makes it difficult to completely separate the quick-freezing tray from the shelf; (3) The axial flow fan is set at the top. The cold air flowing out from the left and right air ducts enters the axial flow fan installation chamber directly upward under the suction of the axial flow fan, which makes it difficult to reach the center of the freezer compartment, resulting in uneven temperature in the freezer compartment (low temperature on both sides and high temperature in the middle). Summary of the Invention

[0004] The present invention addresses the aforementioned problems of existing cold storage compartments by providing a low-temperature refrigerated compartment for marine fishing vessels that features a compact structure, uniform internal temperature, easy removal of fish trays, and facilitates faster unloading of catches.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A low-temperature refrigerated compartment for a marine fishing vessel, comprising a refrigerated compartment and a flat freezing rack disposed within the refrigerated compartment, the flat freezing rack comprising a support and a freezing plate, the freezing plates being longitudinally spaced within the support, the freezing plates being provided with freezing pipes, a horizontal lifting plate being provided below the freezing plate, and clearance holes being provided at intervals on the freezing plate, the horizontal lifting plate being provided with a longitudinal top plate, the longitudinal top plate being located within the clearance holes and slidingly engaging with the clearance holes, the bottom of the horizontal lifting plate being connected to a manual lifting mechanism that enables the horizontal lifting plate to move up and down, when the horizontal lifting plate descends to the lowest point of its travel, the longitudinal top plate is located within the clearance holes, and the top of the longitudinal top plate is retracted into the clearance holes, when the horizontal lifting plate descends to the highest point of its travel, the longitudinal top plate is located within the clearance holes, and the top of the longitudinal top plate protrudes outside the clearance holes. This invention features clearance holes on a freezing plate. Under the action of a manual lifting mechanism, multiple longitudinal top plates within these clearance holes simultaneously lift the fish plate placed on the freezing plate. These longitudinal top plates have a plate-like structure, with their length aligned with the length of the freezing plate. The large contact area between the longitudinal top plates and the fish plate ensures the fish plate is completely lifted and detached from the freezing plate, making it very convenient to use. The clearance holes are spaced-apart elongated holes, slightly shorter than the length of the freezing plate. These holes also limit and guide the longitudinal top plates, ensuring their vertical movement along the clearance holes. When the horizontal lifting plate descends to its maximum travel, the longitudinal top plates are positioned within the clearance holes. Preferably, the top end face of the longitudinal top plate is flush with the upper opening of the clearance hole to reduce the travel distance when the longitudinal top plate rises to contact the fish plate.

[0006] Preferably, the manual lifting mechanism includes an upper wedge block, a linear movement mechanism, and a lower wedge block. The upper wedge block is fixed to the bottom of the lifting plate, and the lower wedge block is mounted on the linear movement mechanism. The upper wedge surface of the upper wedge block matches the lower wedge surface of the lower wedge block. The upper wedge blocks are spaced apart at the bottom of the horizontal lifting plate, and adjacent lower wedge blocks are connected to each other as a whole by connecting plates. The linear movement mechanism causes the lower wedge block to move horizontally left and right, thereby squeezing the upper wedge block and driving the horizontal lifting plate and the vertical top plate to move up and down, lifting the fish plate. The cooperation between the upper and lower wedge blocks provides strong load-bearing capacity and structural stability. The horizontal lifting plate moves smoothly up and down, and the two are not prone to independent relative movement. The linear movement mechanism can be a conventional structure such as a linear guide slider to ensure the linear movement of the lower wedge slider, while making the movement more labor-saving.

[0007] Preferably, each of the outermost lower wedge blocks is provided with a push-pull handle, which is U-shaped and whose two ends are fixedly connected to the lower wedge block. Pushing or pulling the outermost lower wedge block with the handle allows all lower wedge blocks to move synchronously, making it convenient to use.

[0008] Preferably, a spring sleeve is fixed to the push-pull handle, and a spring seat plate is provided on the bracket. The spring sleeve passes through the spring seat plate and slides with it. A spring is fitted on the portion of the spring sleeve between the push-pull handle and the spring seat plate, with both ends of the spring abutting against the push-pull handle and the spring seat plate, respectively. A limiting nut is provided at the end of the sleeve protruding from the spring seat plate. In its natural state, the upper and lower wedge blocks are relatively stationary without external force. When the push-pull handle is pushed, the spring is compressed, and the lower wedge block can squeeze the upper wedge block, causing the horizontal lifting plate and the vertical top plate to rise simultaneously. When the push-pull handle is released, the push-pull handle and the lower wedge block can automatically return to their original positions under the action of the spring's restoring force, causing the horizontal lifting plate and the vertical top plate to descend and return to their original positions. The limiting nut and the spring seat plate serve to limit the movement and prevent the upper and lower wedge blocks from separating.

[0009] Preferably, the bracket has an air guide shroud on one side relative to the push-pull handle. The air guide shroud has an air outlet and an air inlet, and a fan is located on the outer side of the air guide shroud. The end face of the air outlet is fixedly connected to the bracket, and the end face of the air inlet is fixedly connected to the end face of the fan's air outlet. In the prior art, fans are usually directly installed on one or both sides of the bracket. This method causes the cold air blown by the fan to be unable to pass through the gap between the freezing plates in a directional manner, and it will disperse in all directions, resulting in poor air circulation (poor heat exchange) between the freezing plates. Therefore, in this invention, an air guide shroud is set between the fan and the bracket. The air guide shroud can direct all the cold air blown by the fan into the gap between the freezing plates, thereby accelerating the air circulation between the freezing plates and making the temperature in the refrigeration compartment more uniform.

[0010] Preferably, the air guide shroud is square-pyramidal, with the large end of the air guide shroud forming an air outlet and the small end forming an air inlet.

[0011] Preferably, the linear motion mechanism is a linear guide slider, the bracket is provided with a crossbeam, the guide rail of the linear guide slider is fixed to the crossbeam, and the slider of the linear guide slider is fixed to the bottom of the lower wedge block. The linear guide slider has a simple structure and low sliding resistance.

[0012] Preferably, a guide rod is provided on the outer side of the crossbeam, the guide rod passing through the horizontal lifting plate and slidingly engaging with the horizontal lifting plate. The guide rod serves to guide the lifting of the horizontal lifting plate.

[0013] Preferably, the bottom of the horizontal lifting plate is provided with reinforcing ribs, and the reinforcing ribs have U-shaped anti-bending grooves inside. When the longitudinal top plate lifts the fish plate, it will be subjected to the reaction force of the fish plate, especially when the fish plate is frozen together with the freezing plate, the reaction force is large, which will cause the horizontal lifting plate to bend and deform. Based on this, the present invention provides reinforcing ribs at the bottom of the horizontal lifting plate to improve the bending deformation resistance of the horizontal lifting plate. The length direction of the reinforcing ribs is perpendicular to the length direction of the longitudinal top plate; the anti-bending grooves can disperse the force on the reinforcing ribs and avoid force concentration.

[0014] Preferably, the longitudinal top plate and the clearance hole are fitted with a clearance fit. This clearance fit prevents water from accumulating between the longitudinal top plate and the clearance hole and freezing together, thus increasing the resistance during the lifting and lowering movement of the longitudinal top plate.

[0015] Therefore, the present invention has the following beneficial effects:

[0016] (1) Through the cooperation of the manual lifting mechanism, the longitudinal top plate, the clearance hole and other structures, the fish plate placed on the freezing plate can be quickly lifted up, so that the frozen fish plate and the freezing plate can be separated, making it easy to remove the fish plate. It is very convenient and labor-saving to use, which helps to improve the unloading speed of the catch.

[0017] (2) Install a guide hood between the fan and the support to direct all the cold air blown out by the fan into the gap between the freezing plates, so as to accelerate the air circulation between the freezing plates and make the temperature in the cold storage compartment more uniform. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal structure of the present invention.

[0019] Figure 2 This is a top view of the frozen plate.

[0020] Figure 3 This is a schematic diagram showing the coordination of the manual lifting mechanism, the horizontal lifting plate, and the vertical top plate.

[0021] Figure 4 yes Figure 1 Enlarged view of point A in the middle.

[0022] Figure 5 This is a schematic diagram showing the interaction between the manual lifting mechanism and the lower wedge plate.

[0023] Figure 6 This is a top view of the reinforcing rib.

[0024] In the diagram: 1. Refrigerated compartment; 2. Support frame; 3. Freezing plate; 4. Freezing pipe; 5. Horizontal lifting plate; 6. Clearance hole; 7. Longitudinal top plate; 8. Upper wedge block; 9. Linear movement mechanism; 10. Lower wedge block; 11. Connecting plate; 12. Push-pull handle; 13. Spring sleeve rod; 14. Spring seat plate; 15. Spring; 16. Limit nut; 17. Air guide hood; 18. Fan; 19. Crossbeam; 20. Guide rod; 21. Reinforcing rib; 22. Bending groove; 23. Fish plate. Detailed Implementation

[0025] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1 The illustration shows a low-temperature refrigerated compartment on a marine fishing vessel, comprising a refrigerated compartment 1 and a flat-plate freezing rack disposed within the refrigerated compartment. The flat-plate freezing rack includes a support frame 2 and freezing plates 3, which are longitudinally spaced within the support frame. Freezing pipes 4 (such as...) are installed within the freezing plates. Figure 2 As shown), a horizontal lifting plate 5 is provided below the freezing plate, and clearance holes 6 are provided at intervals on the freezing plate. A longitudinal top plate 7 is provided on the horizontal lifting plate, which is located in the clearance holes and slides in cooperation with the clearance holes. A reinforcing rib 21 is provided at the bottom of the horizontal lifting plate, and a U-shaped anti-bending groove 22 is provided in the reinforcing rib 21 (as shown). Figure 6 As shown), the bottom of the horizontal lifting plate is also connected to a manual jacking mechanism that enables the horizontal lifting plate to move up and down. When the horizontal lifting plate descends to the bottom of its travel, the longitudinal top plate is located within the clearance hole, and the top of the longitudinal top plate is retracted into the clearance hole. When the horizontal lifting plate descends to the top of its travel, the longitudinal top plate is located within the clearance hole, and the top of the longitudinal top plate protrudes out of the clearance hole; the manual jacking mechanism (such as...) Figure 4 (As shown) includes an upper wedge block 8, a linear moving mechanism 9, and a lower wedge block 10. The upper wedge block is fixed to the bottom of the lifting plate, and the lower wedge block is set on the linear moving mechanism, which is a linear guide slider. A crossbeam 19 is provided on the support. The guide rail in the linear guide slider is fixed on the crossbeam, and the slider in the linear guide slider is fixed to the bottom of the lower wedge block. The upper wedge surface of the upper wedge block is adapted to the lower wedge surface of the lower wedge block. The upper wedge blocks are spaced apart at the bottom of the horizontal lifting plate. Adjacent lower wedge blocks are connected to each other as a whole by a connecting plate 11. A guide rod 20 is provided on the outside of the crossbeam. The guide rod passes through the horizontal lifting plate and slides with the horizontal lifting plate. A push-pull handle 12 is provided on the outside of the outermost lower wedge block on one side of the support. The push-pull handle is U-shaped, and both ends of the push-pull handle are fixedly connected to the lower wedge block. A spring sleeve rod 13 is fixed on the push-pull handle (e.g., Figure 3 , Figure 5As shown), the bracket is provided with a spring seat plate 14, and a spring sleeve rod passes through the spring seat plate and slides with the spring seat plate. A spring 15 is sleeved on the part of the spring sleeve rod located between the push-pull handle and the spring seat plate. The two ends of the spring abut against the push-pull handle and the spring seat plate respectively. A limiting nut 16 is provided at the end of the sleeve rod exposed on the spring seat plate. A wind guide shroud 17 is provided on the side of the bracket opposite to the push-pull handle. The wind guide shroud is provided with an air outlet and an air inlet. A fan 18 is provided on the outside of the wind guide shroud. The wind guide shroud is square-conical in shape. The large end of the wind guide shroud forms the air outlet, and the small end of the wind guide shroud forms the air inlet. The end face of the air outlet is fixedly connected to the bracket, and the end face of the air inlet is fixedly connected to the end face of the air outlet of the fan.

[0027] The method of using this invention is as follows: Place the fish plate 23 on the freezing plate for refrigeration. When it is necessary to remove the fish plate, push the push-pull handle inward. The spring is compressed, and the lower wedge block moves linearly to squeeze the upper wedge block, causing the horizontal lifting plate and the vertical top plate to rise simultaneously. When the horizontal lifting plate descends to the top of its travel, the top of the vertical top plate protrudes out of the clearance hole, lifting the fish plate to a certain height to prevent the fish plate from freezing together with the freezing plate. After releasing the push-pull handle, the lower wedge block automatically resets under the action of the spring's restoring force, causing the horizontal lifting plate and the vertical top plate to descend and reset, and the fish plate can be removed from the freezing plate.

[0028] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A low-temperature refrigerated compartment for a marine fishing vessel, comprising a refrigerated compartment (1) and a flat-plate freezing rack disposed within the refrigerated compartment, wherein the flat-plate freezing rack comprises a support (2) and a freezing plate (3), the freezing plates being longitudinally spaced within the support, and the freezing plate being provided with freezing pipes (4), characterized in that, A horizontal lifting plate (5) is provided below the freezing plate, and clearance holes (6) are provided on the freezing plate at intervals. A vertical top plate (7) is provided on the horizontal lifting plate. The vertical top plate is located in the clearance hole and slides in cooperation with the clearance hole. A manual lifting mechanism that enables the horizontal lifting plate to move up and down is connected to the bottom of the horizontal lifting plate. When the horizontal lifting plate descends to the bottom of the stroke, the vertical top plate is located in the clearance hole, and the top of the vertical top plate is retracted into the clearance hole. When the horizontal lifting plate rises to the top of the stroke, the vertical top plate is located in the clearance hole, and the top of the vertical top plate protrudes out of the clearance hole. The manual lifting mechanism includes an upper wedge block (8), a linear movement mechanism (9), and a lower wedge block (10). The upper wedge block is fixed to the bottom of the lifting plate, and the lower wedge block is set on the linear movement mechanism. The upper wedge surface of the upper wedge block is adapted to the lower wedge surface of the lower wedge block. The upper wedge blocks are spaced apart at the bottom of the horizontal lifting plate, and adjacent lower wedge blocks are connected to each other as a whole by a connecting plate (11).

2. The low-temperature refrigerated compartment of a marine fishing vessel according to claim 1, characterized in that, A push-pull handle (12) is provided on the outer side of any of the outermost lower wedge blocks. The push-pull handle is U-shaped and its two ends are fixedly connected to the lower wedge block.

3. The low-temperature refrigerated compartment of a marine fishing vessel according to claim 2, characterized in that, A spring sleeve rod (13) is fixed on the push-pull handle, and a spring seat plate (14) is provided on the bracket. The spring sleeve rod passes through the spring seat plate and slides with the spring seat plate. A spring (15) is sleeved on the part of the spring sleeve rod located between the push-pull handle and the spring seat plate. The two ends of the spring abut against the push-pull handle and the spring seat plate respectively. A limiting nut (16) is provided on the end of the sleeve rod exposed on the spring seat plate.

4. The low-temperature refrigerated compartment of a marine fishing vessel according to claim 3, characterized in that, The bracket is provided with an air guide hood (17) on one side relative to the push-pull handle. The air guide hood is provided with an air outlet and an air inlet. A fan (18) is provided on the outside of the air guide hood. The end face of the air outlet is fixedly connected to the bracket, and the end face of the air inlet is fixedly connected to the end face of the air outlet of the fan.

5. A low-temperature refrigerated compartment for a marine fishing vessel according to claim 4, characterized in that, The air guide shroud is square-pyramidal, with the large end forming an air outlet and the small end forming an air inlet.

6. The low-temperature refrigerated compartment of a marine fishing vessel according to claim 1, characterized in that, The linear movement mechanism is a linear guide slider. The support is provided with a crossbeam (19). The guide rail in the linear guide slider is fixed on the crossbeam, and the slider in the linear guide slider is fixed to the bottom of the lower wedge block.

7. A low-temperature refrigerated compartment for a marine fishing vessel according to claim 6, characterized in that, A guide rod (20) is provided on the outside of the crossbeam, which passes through the horizontal lifting plate and slides with the horizontal lifting plate.

8. A low-temperature refrigerated compartment for a marine fishing vessel according to claim 1, characterized in that, The bottom of the horizontal lifting plate is provided with a reinforcing rib, and the reinforcing rib (21) is provided with a bending groove (22) with a "U" shaped cross section.

9. A low-temperature refrigerated compartment for a marine fishing vessel according to claim 1, characterized in that, The longitudinal top plate and the clearance hole are fitted with a clearance.

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