Double-beam group phase error continuous ice making and removing system of tube ice machine

Abstract

The application discloses a double-beam group phase error continuous ice making and ice removing system of a tube ice machine, and belongs to the technical field of the tube ice machine, and comprises an evaporator, a plurality of groups of copper tubes are arranged in the evaporator, the plurality of groups of copper tubes are divided into a beam group a and a beam group b, the copper tubes in the evaporator are divided into the beam group a and the beam group b, two groups of tube beams alternately perform ice making and ice removing operations in phase error, at any moment, one group of tube beams is kept in an ice making state, and the ice making air gap caused by synchronous ice removing of a whole traditional tube ice machine is eliminated, in the ice removing process, the ice making side tube beam continuously performs evaporation refrigeration, can continuously provide a stable suction gas source for a compressor, avoids the problem that all tube beams are simultaneously switched to a condensation working condition, greatly reduces fluctuation amplitudes of exhaust pressure and suction pressure of a refrigeration system, reduces working condition impact borne by the compressor, and prolongs the service life of the compressor.

Description

Technical Field

[0001] This invention relates to the field of tube ice machine technology, and in particular to a dual-beam staggered-phase continuous ice-making and de-icing system for tube ice machines. Background Technology

[0002] As the core equipment for industrial ice making, tube ice machines rely on the refrigerant to evaporate and absorb heat in the shell side of the evaporator, causing the water sprayed on the inner wall of the copper tube to freeze and form a tube-shaped ice column. After the ice layer reaches the set thickness, the compressor exhausts the hot gas to remove the ice. The tube ice falls off by its own weight and is then cut into fixed-length tube ice by the ice-cutting mechanism.

[0003] In conventional tube ice machines, all tube bundles inside the evaporator are in the same working chamber. All tube bundles complete ice making and hot gas de-icing simultaneously. During the de-icing cycle, the entire machine stops ice making, resulting in a significant ice production gap that restricts the ice production capacity per unit time. At the same time, when the entire machine is de-icing synchronously, all tube bundles switch to condensation and heat release mode, causing fluctuations in the system's exhaust and suction pressures, and subjecting the compressor to significant operating shocks.

[0004] Therefore, it is necessary to provide a tube ice machine dual-beam staggered phase continuous ice making and de-icing system to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a dual-beam staggered-phase continuous ice-making and de-icing system for tube ice machines, so as to solve the technical problems mentioned in the background art.

[0006] Based on the above ideas, the present invention provides the following technical solution: a dual-beam staggered-phase continuous ice-making and de-icing system for tube ice machines, comprising: An evaporator, wherein multiple sets of copper tubes are provided inside the evaporator; the multiple sets of copper tubes are divided into bundle a and bundle b. The exhaust port is located at the top of the evaporator shell and at bundle a and bundle b; The liquid supply interface, the de-icing and liquid drain outlet, and the hot gas inlet are located at the bottom of the evaporator shell and are arranged in groups corresponding to bundle a and bundle b. A water distribution plate is installed at the top of the evaporator to introduce ice-making water into the copper tubes of bundle a and bundle b respectively. An ice-cutting mechanism is located at the bottom of the lower tube plate at the bottom of the evaporator to cut off ice columns that have broken off inside the copper tubes.

[0007] As a further aspect of the present invention: an upper tube sheet is provided at the top of the evaporator, the copper tube is fixed between the upper tube sheet and the lower tube sheet, and a partition is fixed between the upper tube sheet and the lower tube sheet. The partition is used to divide the copper tubes in the evaporator into bundle a and bundle b.

[0008] As a further embodiment of the present invention: the water distribution plate is disposed at the boundary between the bundle a and the bundle b and is fixedly connected relative to the upper tube sheet.

[0009] As a further embodiment of the present invention: the ice-cutting mechanism includes a rotating column and a rotating ring arranged coaxially. The rotating column is located at the bottom axis of the lower tube plate and is rotatably arranged relative to the lower tube plate. The rotating ring is coaxially sleeved on the outside of the rotating column, and an ice-receiving plate and an ice-cutting blade are circumferentially fixed between the two. The ice receiving plate is provided with a through groove, and the ice cutter is positioned above the ice receiving plate and aligned with the through groove. The ice cutter is in contact with the bottom of the lower tube plate.

[0010] As a further aspect of the present invention: both ends of the ice-cutting blade are fixed with connectors, the ice-cutting blade is connected to the rotating column and the rotating ring through the connectors, the ice-cutting blade is configured to be able to move vertically relative to the rotating column and the rotating ring, and the ice-cutting blade can rotate 180° around the horizontal axis during vertical movement.

[0011] As a further embodiment of the present invention: a rotating shaft is fixed at the end of the connector away from the ice cutter, and a vertically arranged connecting plate is provided at the end of the rotating shaft. The rotating shaft is rotatably connected to the connecting plate. The connecting plate located at the rotating column is arranged to pass through the rotating column downward along the axial direction and is slidably engaged with it. The connecting plate located at the rotating ring is arranged to pass through the rotating ring downward along the axial direction and is slidably engaged with it. A gear is rotatably mounted on the outer side of the rotating shaft via a one-way bearing. A rack is fixed to both the rotating column and the rotating ring, so that the gear can mesh with the rack when the ice cutter moves vertically.

[0012] As a further aspect of the present invention: both the rotating column and the rotating ring are provided with driving components, and the driving components are configured to drive the connecting plate to move in the vertical direction so as to drive the ice-cutting blade to flip.

[0013] As a further aspect of the present invention: the driving assembly includes a ring body fixed relative to a rotating ring or a rotating column, the ring body including an inner fixed ring disposed at the bottom of the rotating column and an outer fixed ring disposed at the bottom of the rotating ring; the inner peripheral wall of the ring body is provided with a positioning groove and a guide groove communicating therewith, the guide groove protruding vertically downward along the axial direction of the ring body relative to the positioning groove, and the two ends where the guide groove intersects the positioning groove are respectively provided with a first guide member and a second guide member, the first guide member and the second guide member are both hinged to the ring body, the outer side of the ring body is provided with an electric push rod, the tail end of the electric push rod is hinged to the ring body, the output end of the electric push rod is hinged to the first guide member, and the bottom end of the connecting plate is provided with a connecting shaft that slides with the positioning groove and the guide groove.

[0014] As a further aspect of the present invention: a convex shaft is fixedly provided on the outer side of the first guide member, and a collar fixed at the output end of the electric push rod is sleeved on the outer side of the convex shaft.

[0015] As a further aspect of the present invention: the hinge axis between the tail end of the electric push rod and the ring body, the hinge axis between the output end of the electric push rod and the first guide member, and the hinge axis between the first guide member and the ring body are arranged in parallel to each other.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the copper tubes inside the evaporator are divided into bundle a and bundle b, and the two bundles alternately perform ice making and de-icing operations in a staggered phase. At any given time, one bundle is always in the ice making state, eliminating the ice production gap caused by the synchronous de-icing of the entire machine in traditional tube ice machines. During the de-icing process, the ice making side bundle continues to perform evaporative refrigeration, which can continuously provide a stable suction gas source for the compressor, avoiding the problem of all bundles switching to condensing mode at the same time. This significantly reduces the fluctuation amplitude of the exhaust pressure and suction pressure of the refrigeration system, reduces the operating condition impact on the compressor, and extends the service life of the compressor. Attached Figure Description

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

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the evaporator structure of the present invention; Figure 4 This is a schematic diagram showing the relative position of the ice-cutting mechanism and the base plate of the present invention; Figure 5 This is a schematic diagram of the ice-cutting mechanism of the present invention; Figure 6 This is a schematic diagram of the structure of the inner fixing ring and the outer fixing ring of the present invention; Figure 7 This is a schematic diagram of the installation structure of the ice-cutting blade of the present invention; Figure 8 This is a schematic diagram of the connection between the connecting shaft and the guide unit of the present invention; Figure 9 This is a schematic diagram of the first guide member of the present invention in an upward deflection state; Figure 10 This is a schematic diagram showing the distribution of bundle a and bundle b in this invention; Figure 11 This is a schematic diagram of the ice-cutting blade of the present invention bent downwards; Figure 12 This is a schematic diagram of the ice cutter blade of the present invention being flipped over and reattached to the lower tube plate.

[0019] In the diagram: 1. Evaporator; 101. Exhaust port; 102. Hot gas inlet; 103. Ice outlet; 104. Lower tube sheet; 105. Copper tube; 106. Baffle plate; 107. Upper tube sheet; 108. Water distribution plate; 2. Oil-gas separator; 3. Condenser; 4. Low-pressure circulating tank; 5. Compressor; 6. Water tank; 7. Gas-liquid separator; 8. Fixed cylinder; 801. Base plate; 9. Drive unit; 10. Rotating ring; 11. Gear ring; 12. 13. Central shaft; 14. Outer fixing ring; 15. Inner fixing ring; 16. Positioning groove; 17. Guide groove; 18. Telescopic unit; 19. Ice cutter; 20. Ice receiving plate; 21. Rotating column; 22. Limiting component; 23. Vertical plate; 24. Detection unit; 25. Connecting head; 26. Rotating shaft; 27. Gear; 28. Rack; 29. ​​Connecting plate; 20. Second guide component; 21. First guide component; 22. Connecting shaft. Detailed Implementation

[0020] like Figures 1 to 12 As shown, a dual-beam staggered-phase continuous ice-making and de-icing system for a tube ice machine includes a frame and an evaporator 1, an oil-gas separator 2, a condenser 3, a low-pressure circulating tank 4, a compressor 5, and a gas-liquid separator 7, which are vertically fixed relative to the frame. Specifically, an upper tube sheet 107 and a lower tube sheet 104 are fixedly installed near the top and bottom of the evaporator 1, respectively. Several sets of vertically arranged copper tubes 105 or stainless steel tubes are assembled between the upper tube sheet 107 and the lower tube sheet 104, with both ends of the copper tubes 105 penetrating the upper tube sheet 107 and the lower tube sheet 104, respectively. A water distribution plate is provided at the top of the evaporator 1. Ice-making water can be transported to the water distribution plate position of the evaporator 1 by means of an external water pump. The ice-making water is sprayed downward onto the inner wall of the heat exchange copper tubes 105 and flows downward along the inner wall of the copper tubes 105 to form a water film.

[0021] The evaporator 1 has an exhaust port 101 near the top of its outer wall and a hot gas inlet 102 near the bottom of its outer wall. The exhaust port of the compressor 5 is connected to the inlet of the oil-gas separator 2 via a pipeline. The oil-gas separator 2 is used to separate the lubricating oil entrained in the exhaust of the compressor 5, and the separated lubricating oil flows back to the inside of the compressor 5 housing via a return oil pipeline. The outlet of the oil-gas separator 2 is connected to the inlet of the condenser 3. The condenser 3 is a water-cooled condenser 3, and is externally connected to a cooling water circulation pipeline. The refrigerant outlet of the condenser 3 is connected to a throttling component, and the output end of the throttling component is connected to the liquid supply interface near the bottom of the outer wall of the evaporator 1. The de-icing and liquid discharge outlet near the bottom of the outer side of the evaporator 1 is connected to the gas-liquid separator 7 through a pipeline. The liquid phase outlet of the gas-liquid separator 7 is connected to the low-pressure circulation tank 4. The gas phase outlet of the gas-liquid separator 7 and the gas phase outlet at the top of the low-pressure circulation tank 4 are connected to the suction main pipe, which is connected to the suction port of the compressor 5.

[0022] The bottom of the lower tube sheet 104 is equipped with an ice-cutting mechanism for cutting ice columns falling downward from inside the copper tube 105.

[0023] Specifically: During the ice-making stage, the low-temperature, low-pressure refrigerant, after being throttled, is fed into the shell side of the evaporator 1 through the liquid supply port and flows upward. The refrigerant absorbs heat and evaporates on the outside of the copper tube 105, carrying away the heat from the tube wall. After evaporation, the refrigerant is returned to the compressor 5 through the exhaust port 101 near the top of the evaporator 1. Water is sprayed onto the inner wall of the copper tube 105, flowing downward along the tube wall to form a water film, which gradually freezes to form tube ice. When the ice layer thickness reaches the set value, the liquid supply path of the low-temperature refrigerant is cut off, and the high-temperature, high-pressure hot gas discharged from the compressor 5 is introduced into the shell side of the evaporator 1 through the hot gas inlet 102 to perform hot gas de-icing. After the hot gas condenses, it enters the gas-liquid separator 7 through the de-icing drain outlet. Centrifugal gas-liquid separation is completed using the spiral structure inside the gas-liquid separator 7. The separated liquid phase is discharged downward into the low-pressure circulation tank 4, and the gas phase flows upward into the suction circuit of the compressor 5. After the ice layer on the inner wall of copper tube 105 melts and forms a water film, the tube ice falls downwards under its own weight and is cut by the ice-cutting mechanism to obtain the finished tube ice.

[0024] The above are the technical solutions for tube ice machines in the prior art. Their specific structures and working principles are common knowledge to those skilled in the art and will not be elaborated here.

[0025] Example 1 Furthermore, the copper tubes 105 inside the evaporator 1 are divided into two independent bundles, a and b. (Combined) Figure 10 As shown, an internal baffle 106 is provided in the evaporator 1. The baffle 106 is welded and fixed between the lower surface of the upper tube sheet 107 and the upper surface of the lower tube sheet 104. The baffle 106 separates the copper tubes 105 inside the evaporator 1 into two non-communicating bundles, bundle a and bundle b. The baffle 106 is preferably made of heat-insulating material, such as polytetrafluoroethylene, fiberglass epoxy board, or rigid polyurethane heat-insulating board, to reduce the heat transfer between the two independent shell sides of bundle a and bundle b. A water distribution plate 108 is fixedly installed at the top of the evaporator 1, above the upper tube sheet 107. The water distribution plate 108 divides the top of the evaporator 1 into two independent water distribution chambers, which can supply ice-making water to the copper tubes 105 corresponding to bundle a and bundle b, respectively.

[0026] Accordingly, the exhaust port 101, hot gas inlet 102, liquid supply interface and de-icing liquid outlet are all set into two groups, which are matched and installed to bundle group a and bundle group b respectively.

[0027] The outlet of the oil-gas separator 2 branches into two pipelines. The first branch connects to the inlet of the condenser 3. The second branch is connected to the hot gas solenoid valves on the a and b sides of the bundle, respectively, and then to the hot gas inlet 102 of the corresponding bundle in the evaporator 1. The output of the throttling component is divided into two pipelines, which are connected to their respective bundle chambers via two sets of liquid supply solenoid valves.

[0028] After installing one-way valves on the de-icing and liquid discharge outlet pipes of bundle a and bundle b, the pipes are connected to the spiral gas-liquid separator 7. The one-way valves are used to prevent refrigerant backflow. The liquid phase outlet of the gas-liquid separator 7 is connected to the liquid phase area of ​​the low-pressure circulation tank 4, and the gas phase outlet of the gas-liquid separator 7 is connected to the suction main pipe. The gas phase interface at the top of the low-pressure circulation tank 4 is also connected to the suction main pipe, which is ultimately connected to the suction port of the compressor 5.

[0029] As an optional implementation, bundle a and bundle b can each be equipped with an independent spiral gas-liquid separator 7; the liquid phase outlets of the two gas-liquid separators 7 are respectively connected to the liquid phase area of ​​the low-pressure circulation tank 4, and the gas phase outlets of the two gas-liquid separators 7 are connected to the intake manifold after being combined.

[0030] Workflow: After the system is powered on, compressor 5 runs continuously without needing to be stopped. Under initial conditions, bundle a enters the ice-making mode, while bundle b is in standby mode. When the ice layer in bundle a grows to the set thickness, the system performs a mode switch, with bundle b switching to the ice-making mode and bundle a switching to the de-icing mode. The two bundles work alternately in a cycle according to the above logic with phase shifts.

[0031] When assembly a operates in ice-making mode, the liquid supply solenoid valve at the liquid supply interface and the return gas solenoid valve at the exhaust port 101 of assembly a are opened, the hot gas solenoid valve at the hot gas inlet 102 of assembly a is closed, and the water circuit solenoid valve on the side of assembly a is opened. The water for ice making is sprayed onto the inner wall of the copper tube 105 of assembly a through the water distribution plate. The low-temperature, low-pressure refrigerant output by the throttling component is sent into the independent shell side of assembly a through the liquid supply solenoid valve. The refrigerant absorbs heat and evaporates in the shell side space outside the copper tube 105, absorbing heat from the tube wall of the copper tube 105, causing the sprayed water to gradually freeze into ice on the inner wall of the copper tube 105. The evaporated low-temperature refrigerant flows back to the compressor 5 through the exhaust port 101 on the side of assembly a.

[0032] Once the ice layer in bundle b reaches the preset thickness, bundle b switches to de-icing mode: the liquid supply solenoid valve and return gas solenoid valve corresponding to bundle b close, the hot gas solenoid valve corresponding to bundle b opens, and the water circuit solenoid valve on the side of bundle b closes, stopping the supply of ice-making water to bundle b. The high-temperature and high-pressure hot gas discharged from compressor 5 passes through oil-gas separator 2, and part of it is sent into the shell side of bundle b through the hot gas solenoid valve of bundle b to carry out hot gas de-icing, while the other part continues to flow into condenser 3; the high-temperature hot gas condenses and releases heat in the shell side of bundle b, melting the interface water film between the ice block and the wall of copper tube 105, and the tube ice falls downward by its own gravity; the falling ice column is cut by the ice-cutting mechanism at the bottom of the lower tube plate 104 to form a fixed length of finished tube ice. Liquid refrigerant generated by the condensation of hot gas in the shell side of bundle b flows into gas-liquid separator 7 via a one-way valve on the de-icing drain outlet pipe. After separation by gas-liquid separator 7, the liquid phase medium enters the low-pressure circulation tank 4 for storage, while the gas phase medium flows back to compressor 5. When the de-icing timer for bundle b ends, the system controls the solenoid valves to switch in tandem: the hot gas solenoid valve of bundle b closes, the liquid supply solenoid valve and return gas solenoid valve of bundle b open, and the water circuit solenoid valve on the side of bundle b opens to restore water supply, thus switching bundle b back to ice-making mode; simultaneously, the liquid supply solenoid valve and return gas solenoid valve of bundle a close, the hot gas solenoid valve of bundle a opens, and the water circuit solenoid valve on the side of bundle a closes to stop water supply, thus putting bundle a into de-icing mode. The above switching logic is continuously executed in a loop, enabling bundle a and bundle b to complete ice-making and de-icing operations in staggered phases.

[0033] This invention divides the copper tubes 105 inside the evaporator 1 into bundle a and bundle b. The two bundles alternately perform ice-making and de-icing operations with staggered phases, ensuring that one bundle is always in the ice-making state, thus eliminating the ice-making gap caused by the synchronous de-icing of the entire unit in traditional tube ice machines. During the de-icing process, the ice-making side bundles continuously perform evaporative refrigeration, which can continuously provide a stable suction gas source for the compressor 5, avoiding the problem of all bundles switching to condensing mode at the same time. This significantly reduces the fluctuation amplitude of the refrigeration system's exhaust pressure and suction pressure, reduces the operating condition impact on the compressor 5, and extends the service life of the compressor 5.

[0034] The bottom of the evaporator 1 is equipped with a fixed cylinder 8, and the ice-cutting mechanism is rotatably mounted at the top of the fixed cylinder 8 for cutting the ice column falling downward inside the copper tube 105. The bottom of the fixed cylinder 8 is provided with a base plate 801, and an ice outlet 103 is opened on the outer circumference of the fixed cylinder 8 above the base plate 801. The base plate 801 can be configured as an inclined structure, with the lower end of the base plate 801 arranged opposite to the ice outlet 103 to facilitate the outward discharge of the cut ice column.

[0035] A water tank 6 is arranged on the outside of the fixed cylinder 8, and the water tank 6 is fixedly connected to the frame. The fixed cylinder 8 can be fixedly connected to either the evaporator 1 or the water tank 6. During the operation of the equipment, the ice-making water dripping from the copper pipe 105 flows into the water tank 6 through the evenly spaced holes on the bottom plate 801. The water pump can then transport the ice-making water in the water tank 6 back to the water distribution plate at the top of the evaporator 1, realizing the recycling of the ice-making water.

[0036] The ice-cutting mechanism includes a coaxially arranged rotating column 18 and a rotating ring 10. The rotating column 18 is installed at the axial position of the bottom of the lower tube plate 104 and rotates with the lower tube plate 104. An ice-receiving plate 17 and an ice-cutting blade 16 are installed between the rotating column 18 and the rotating ring 10. The ice-receiving plate 17 is fixedly connected to the rotating column 18 and the rotating ring 10 respectively. A through groove is opened on the ice-receiving plate 17, and the ice-cutting blade 16 is arranged above the ice-receiving plate 17 and aligned with the through groove. The ice-cutting blade 16 maintains contact with the bottom of the lower tube plate 104. Projected along the axial direction of the evaporator 1, the area covered by the ice-cutting blade 16 and the ice-receiving plate 17 is circular. It can be understood that both the ice-receiving plate 17 and the ice-cutting blade 16 are provided with an array of circular holes, which facilitates the passage of ice-making water.

[0037] Furthermore, the rotating ring 10 is rotatably engaged with the fixed cylinder 8, and a gear ring 11 is fixedly fitted on the outer side of the rotating ring 10; a drive unit 9 is configured on the outer side of the fixed cylinder 8, the drive unit 9 is a motor, the motor is fixedly installed relative to the fixed cylinder 8, and the output end of the motor is connected to a drive gear that meshes with the gear ring 11, thereby driving the rotating ring 10 to rotate around the central axis of the evaporator 1.

[0038] Specifically, after the ice column detaches from the inner wall of the copper tube 105, it falls onto the ice receiving plate 17 under its own gravity; the ice cutting blade 16 completes the cutting operation of the ice column as the rotating ring 10 rotates, and the cut ice column falls onto the base plate 801 through the gap between the ice cutting blade 16 and the ice receiving plate 17, and is finally discharged outward through the ice outlet 103.

[0039] In existing equipment, the ice-cutting blade 16 is typically fixedly connected to the rotating column 18 and the rotating ring 10. During long-term operation, the repeated impact of falling ice pillars on the ice-cutting blade 16 can easily cause it to bend and deform. (See details...) Figure 11 When the ice cutter blade 16 bends and deforms, it cannot fit tightly against the bottom surface of the lower tube plate 104, directly reducing the cutting quality of the ice column. In particular, the area with the largest deformation in the middle of the ice cutter blade 16 is prone to abnormal breakage of the ice column when it comes into contact with the falling ice column, resulting in defects such as ice column size deviation and poor ice column cut smoothness.

[0040] To address the aforementioned shortcomings, this solution designs the ice-cutting blade 16 as a structure capable of vertically moving relative to the rotating column 18 and the rotating ring 10. Furthermore, during its vertical movement, the ice-cutting blade 16 can rotate around a horizontal axis, achieving a 180° flip. With this structure, when the flipped ice-cutting blade 16 re-fits the lower tube plate 104, the squeezing force exerted by the lower tube plate 104 on the ice-cutting blade 16 can maintain its horizontal position. For details, please refer to... Figure 12 As shown.

[0041] Specifically, both ends of the ice cutter 16 are fixedly fitted with connectors 21 by screws. The connectors 21 are U-shaped, and the ends of the ice cutter 16 are inserted into the connectors 21 and fastened by screws. The outer circular surface of the rotating column 18 and the inner circular surface of the rotating ring 10 are both provided with mounting grooves along the axial direction, and the connectors 21 are fitted into the corresponding mounting grooves.

[0042] A rotating shaft 22 is fixedly installed at one end of the connector 21 away from the ice cutter 16. A vertically arranged connecting plate 25 is arranged at the end of the rotating shaft 22, and the rotating shaft 22 and the connecting plate 25 are rotatably engaged. The connecting plate 25 arranged on one side of the rotating column 18 passes through the rotating column 18 downward along the axial direction and forms a sliding pair with the rotating column 18. The connecting plate 25 arranged on one side of the rotating ring 10 passes through the rotating ring 10 downward along the axial direction and forms a sliding pair with the rotating ring 10.

[0043] A gear 23 is rotatably mounted on the outer side of the rotating shaft 22 via a one-way bearing. A vertically arranged rack 24 is fixedly installed inside the mounting groove. When the ice cutter 16 drives the gear 23 to move in the vertical direction, the gear 23 can mesh with the rack 24 for transmission.

[0044] With the above structure, when the ice cutter blade 16 bends and deforms, it can drive the rotating column 18 and the connecting plate 25 on the rotating ring 10 to reciprocate in the vertical direction, thereby driving the ice cutter blade 16 to move vertically back. Since the gear 23 and the rotating shaft 22 are connected by a one-way bearing, during the entire reciprocating movement of the ice cutter blade 16, the gear 23 will only mesh with the rack 24 in one of its strokes, thereby driving the ice cutter blade 16 to complete a 180° rotation and flip. For example, after the ice cutter blade 16 moves downward a certain distance and disengages from the lower tube plate 104, the gear 23 can engage with the rack 24; during the downward movement of the gear 23 to the limit position of its stroke, it drives the ice cutter blade 16 to rotate 180°; when the ice cutter blade 16 subsequently moves upward in the vertical direction to reset, even if the gear 23 passes the rack 24, it will only rotate freely and will not generate rotational driving force, so that the ice cutter blade 16 maintains the posture after the flip and finally re-fits against the bottom surface of the lower tube plate 104.

[0045] Both the rotating column 18 and the rotating ring 10 are provided with driving components. The driving components are configured to drive the connecting plate 25 to move in the vertical direction so as to drive the ice cutter 16 to flip.

[0046] In one embodiment, the drive component can be an electric cylinder or a pneumatic cylinder; however, in practical applications, such a drive component needs to rotate together with the rotating column 18 and the rotating ring 10, which increases the difficulty of pipeline and wiring layout. To simplify the overall structure, this solution provides another embodiment: The driving assembly includes a ring body that is vertically fixed relative to the rotating ring 10 or the rotating column 18, and a guide unit arranged on the ring body; a connecting shaft 28 is fixedly installed at the bottom end of the connecting plate 25 in a direction perpendicular to the surface of the connecting plate 25, and the connecting shaft 28 cooperates with the guide unit; relying on the cooperation between the guide unit and the connecting shaft 28, the connecting plate 25 can be driven to complete the vertical displacement during the rotation of the rotating column 18 and the rotating ring 10.

[0047] Specifically, the ring body includes an inner fixing ring 14 installed at the bottom of the rotating column 18, and an outer fixing ring 13 disposed at the bottom of the rotating ring 10. The guide unit is formed on the inner wall of the ring body, including a positioning groove 1401 and a guide groove 1402 communicating with the positioning groove 1401; both the positioning groove 1401 and the guide groove 1402 are arranged along the circumference of the ring body. Figures 8 to 9 As shown, the guide groove 1402 protrudes vertically downwards along the ring axis relative to the positioning groove 1401, making the guide groove 1402 arranged in an approximately V-shaped structure. It can be understood that the length of the guide groove 1402 on the outer fixed ring 13 is proportionally enlarged compared to the guide groove 1402 on the inner fixed ring 14; through this structure, when the connecting shafts 28 at both ends of the ice cutter 16 are respectively engaged with the guide groove 1402, they can drive the two ends of the ice cutter 16 to achieve synchronous lifting and lowering. At the two ends where the guide groove 1402 and the positioning groove 1401 intersect, a first guide member 27 and a second guide member 26 are respectively assembled. Both the first guide member 27 and the second guide member 26 are hinged to the ring body, with the hinge positions respectively located between the top of the first guide member 27 and the bottom of the positioning groove 1401, and between the top of the second guide member 26 and the bottom of the positioning groove 1401.

[0048] Using this mechanism, when the first guide member 27 and the second guide member 26 maintain a horizontal posture, their top surfaces are flush with the top surface of the positioning groove 1401. The connecting shaft 28 can slide continuously inside the positioning groove 1401, thereby keeping the ice cutter 16 in contact with the lower tube plate 104 and ensuring the cutting operation of the falling ice column. When the first guide member 27 deflects upward to... Figure 9In the indicated state, after the connecting shaft 28 rotates to the position of the first guide member 27 during the rotary motion, it slides into the guide groove 1402 under the guidance of the first guide member 27. During this process, with the cooperation of the connecting shaft 28 and the guide groove 1402, the connecting plate 25 and the ice cutter 16 move downward in the vertical direction. When the connecting shaft 28 moves upward along the guide groove 1402 to the position of the second guide member 26, the connecting shaft 28 can push the second guide member 26 upward and back into the positioning groove 1401, thereby allowing the ice cutter 16 to return to and maintain its working state of being in contact with the lower tube plate 104.

[0049] Furthermore, a telescopic unit 15 is disposed on the outer side of the ring body, and the telescopic unit 15 can be an electric push rod. The tail end of the electric push rod is hinged to the ring body, and a convex shaft is fixedly disposed on the outer side of the first guide member 27. A collar fixed at the output end of the electric push rod is sleeved on the outer side of the convex shaft. The collar can move axially and rotate circumferentially relative to the convex shaft, thereby realizing the hinged engagement between the output end of the electric push rod and the first guide member 27. It should be noted that the hinge axis between the tail end of the electric push rod and the ring body, the hinge axis between the output end of the electric push rod and the first guide member 27, and the hinge axis between the first guide member 27 and the ring body are arranged parallel to each other.

[0050] With the above structure, when the ice-cutting blade 16 needs to be flipped, the electric push rods on the inner fixed ring 14 and the outer fixed ring 13 can be controlled to rotate, causing the first guide member 27 to deflect upward, thereby guiding the connecting shaft 28 into the guide groove 1402, and thus driving the connecting plate 25 to move vertically. In this structure, the electric push rods and the rings are fixedly installed, effectively simplifying the overall assembly structure.

[0051] Considering that evaporator 1 contains two tube bundles, bundle a and bundle b, which alternately perform ice-making operations, ensuring that one bundle is always in ice-making mode, this design incorporates a vertical plate 19 on top of the ice-receiving plate 17 and on one side of the ice-cutting blade 16. The vertical plate 19 is fixedly connected to the ice-receiving plate 17. Combined with... Figures 7-8 As shown, two sets of detection units 20 are mounted on the upright plate 19. The detection units 20 can be infrared sensors or ultrasonic sensors. The detection optical path of one set of detection units 20 is perpendicular to the surface of the upright plate 19 and is arranged towards the side away from the ice cutter 16. The detection optical path of the other set of detection units 20 is arranged vertically towards the side of the ice cutter 16. The two sets of detection units 20 are connected in series to the control loop of the telescopic unit 15. That is, the telescopic unit 15 can only be driven to perform an action when both sets of detection units 20 are triggered simultaneously.

[0052] In this embodiment, both the guide unit and the telescopic unit 15 are provided in two sets, corresponding to bundle a and bundle b respectively, so that the ice cutter 16 can choose to complete the vertical movement and flipping action at the bundle a position or the bundle b position.

[0053] For example, when bundle a is in the ice-making stage and bundle b is in the ice-removing stage, when the ice-cutting blade 16 and the upright plate 19 rotate back to the corresponding position of bundle a, one set of detection units 20 detects that there is no falling ice column on the side of the upright plate 19 and triggers a signal, and another set of detection units 20 detects that the ice-cutting blade 16 is bent and deformed downwards and triggers a signal, thereby controlling all the telescopic units 15 on the ring to move and push the first guide member 27 to deflect upwards. As the ice-cutting blade 16 continues to rotate at the position of bundle a, the connecting shaft 28 is guided into the guide groove 1402, driving the connecting plate 25 and the ice-cutting blade 16 to move vertically and complete the flip; when the ice-cutting blade 16 re-attaches to the lower tube plate 104 and returns to the horizontal posture, the detection unit used to detect the bending state of the ice-cutting blade 16 is deactivated, controlling all the telescopic units 15 to reset, so that the first guide member 27 returns to the horizontal posture.

[0054] With the above structure, the ice cutter 16 can be flipped and corrected during the operation of the equipment without stopping the machine to disassemble and replace the ice cutter 16 or manually adjust the state of the ice cutter 16, which effectively improves the ice-making efficiency of the equipment.

[0055] The circuit control logic mentioned above is a mature existing technology in the field of electrical control, and this solution will not elaborate on it further.

[0056] Reference Figure 7 As shown, a U-shaped limiting member 1801 is fixedly installed on the top of the mounting groove; when the ice cutter 16 is in a working state of being in contact with the lower tube plate 104, the connector 21 can be stored inside the limiting member 1801 and in contact with the limiting member 1801, thereby ensuring the stability of the working position of the connector 21.

[0057] Reference Figures 11-12 As shown, the bottom of the lower tube plate 104 has grooves that are adapted to the connector 21; when the ice cutter 16 is attached to the bottom surface of the lower tube plate 104, the connector 21 can be embedded into the groove, providing structural conditions for the ice cutter 16 and the lower tube plate 104 to be fully attached.

[0058] Reference Figure 4As shown, a central shaft 12 is provided at the center of the lower tube plate 104, and the central shaft 12 is fixedly connected to the lower tube plate 104; the rotating column 18 can be rotatably engaged with the central shaft 12. In addition, the base plate 801 can also be rotatably assembled with the central shaft 12. By driving the base plate 801 to rotate, the cut ice column can be centrifugally thrown out, facilitating the rapid outward discharge of the ice column. The bottom end of the inner fixing ring 14 can be fixedly connected to the central shaft 12 by means of a support rod, and the outer fixing ring 13 can be fixedly connected to the fixing cylinder 8.

[0059] Example 2 Because the distances from the connecting shaft 28 on one side of the rotating column 18 to the central axis 12 are different between the connecting shaft 28 on one side of the rotating ring 10 and the connecting shaft 28 on the other side of the rotating ring 10, they have different radii of rotation. When the ice cutter 16 rotates by the same angle, the circumferential distance traversed by the outer connecting shaft 28 is greater than the circumferential distance traversed by the inner connecting shaft 28.

[0060] Therefore, if the guide grooves 1402 on the inner fixing ring 14 and the outer fixing ring 13 are only of the same length and the same slope, or are only generally enlarged in size, without matching the circumferential length of the guide groove 1402 with the actual rotation radius of the two connecting shafts 28, the two connecting shafts 28 may enter the guide groove 1402 at different circumferential positions, reach the lowest position of the guide groove 1402, or return to the positioning groove 1401.

[0061] In this state, one end of the ice cutter 16 may descend before the other, or one end may have reached its lowest position while the other end is still descending, thus creating a height difference between the two ends of the ice cutter 16. Since the ice cutter 16 spans between the rotating column 18 and the rotating ring 10, this height difference can easily cause the ice cutter 16 to tilt, subjecting the connecting plate 25 and the connecting shaft 28 to lateral forces, and creating biased contact between the connecting shaft 28 and the side wall of the guide groove 1402, further increasing the movement resistance and the risk of jamming during the ice cutter 16 flipping process.

[0062] To address the aforementioned technical issues, this embodiment further defines the geometric dimensional relationship between the guide grooves 1402 on the inner fixing ring 14 and the outer fixing ring 13.

[0063] Specifically, the axis of the central shaft 12 is used as the common axis of rotation for the ice-cutting blade 16. When the connecting shaft 28 located on one side of the rotating column 18 is in the positioning groove 1401, the radial distance between the axis of the connecting shaft 28 and the axis of the central shaft 12 forms the inner effective rotation radius; when the connecting shaft 28 located on one side of the rotating ring 10 is in the positioning groove 1401, the radial distance between the axis of the connecting shaft 28 and the axis of the central shaft 12 forms the outer effective rotation radius.

[0064] The effective guide length of the guide groove 1402 on the outer fixing ring 13 in the circumferential direction is greater than the effective guide length of the guide groove 1402 on the inner fixing ring 14 in the circumferential direction, and the ratio of the effective guide lengths of the two corresponds to the ratio of the effective radius of rotation of the outer side to the effective radius of rotation of the inner side.

[0065] Thus, although the guide grooves 1402 on the inner fixing ring 14 and the outer fixing ring 13 have different actual circumferential lengths, their effective guide angle spans relative to the central axis 12 are basically the same.

[0066] Based on this, the guide grooves 1402 on the inner fixing ring 14 and the outer fixing ring 13 still use the approximate V-shaped structure in Embodiment 1, and make the two corresponding guide grooves 1402 have a basically consistent maximum axial sinking amount.

[0067] Simultaneously, the entry position, lowest position, and exit position of the inner and outer guide grooves 1402 are respectively aligned with the same rotation angle position of the ice cutter 16. That is, when the ice cutter 16 rotates to the first circumferential position, the connecting shafts 28 at both ends of it begin to enter the corresponding guide grooves 1402; when the ice cutter 16 continues to rotate to the second circumferential position, the two connecting shafts 28 reach the lowest position of the corresponding guide grooves 1402; when the ice cutter 16 further rotates to the third circumferential position, the two connecting shafts 28 re-enter the positioning grooves 1401 from the corresponding guide grooves 1402.

[0068] When the ice-cutting blade 16 rotates around the central axis 12 with the rotating column 18 and the rotating ring 10, its inner and outer ends have the same rotation angle. However, due to the different rotation radii of the shafts 28 connecting the two ends, the circumferential distances traversed within the same rotation angle are different.

[0069] The connecting shaft 28 located on the side of the outer fixing ring 13 has a larger radius of rotation, resulting in a larger circumferential displacement per unit angle; the connecting shaft 28 located on the side of the inner fixing ring 14 has a smaller radius of rotation, resulting in a smaller circumferential displacement per unit angle.

[0070] In this embodiment, the guide groove 1402 on the outer fixing ring 13 has a longer circumferential guide length, which corresponds to the larger effective radius of rotation on the outer side; at the same time, the guide groove 1402 on the inner fixing ring 14 has a shorter circumferential guide length, which corresponds to the smaller effective radius of rotation on the inner side.

[0071] Therefore, although the actual circumferential distances traveled by the two connecting shafts 28 within the same rotation angle are different, the axial height change corresponding to the outer connecting shaft 28 is distributed within a longer circumferential path, while the axial height change corresponding to the inner connecting shaft 28 is distributed within a shorter circumferential path, thus enabling the two connecting shafts 28 to produce essentially the same axial displacement under the same rotation angle.

[0072] When the first guide member 27 is in the infeeding state, the connecting shafts 28 at both ends of the ice cutter 16 can enter the corresponding guide grooves 1402 from the positioning grooves 1401 at basically the same circumferential angle position. As the ice cutter 16 continues to rotate, the two connecting shafts 28 descend along the guide grooves 1402 and reach the lowest position of the guide grooves 1402 at basically the same rotation angle position.

[0073] Because the inner and outer guide grooves 1402 have essentially the same maximum axial downward displacement, the two ends of the ice-cutting blade 16 can maintain a relatively consistent height during descent, avoiding a situation where one end is significantly lower than the other. Therefore, the connecting plate 25 mainly moves vertically, and the connecting shaft 28 is less likely to experience continuous unilateral pressure due to the tilting of the ice-cutting blade 16, which helps reduce the additional resistance and the possibility of jamming when the connecting shaft 28 moves along the guide groove 1402.

[0074] At the same time, when the two connecting shafts 28 descend in a basically synchronous manner, the gears 23 and racks 24 corresponding to both ends of the ice cutter blade 16 can also enter a relatively consistent meshing stage, so that the two ends of the ice cutter blade 16 maintain coordination during the flipping process, reducing the torsional tendency formed when one end has already started to drive the rotating shaft 22 to rotate while the other end has not yet entered the corresponding motion stage.

[0075] After the ice cutter blade 16 completes its flip, the two connecting shafts 28 move upward along the rising portion of the corresponding guide groove 1402. Since the rising portion still maintains the circumferential length relationship corresponding to the effective turning radius, the two connecting shafts 28 can obtain corresponding upward displacements at basically the same turning angle, and return to the positioning groove 1401 basically synchronously, so that the two ends of the ice cutter blade 16 return to their original working height and fit against the lower tube plate 104.

[0076] Therefore, this embodiment first improves the synchronization of the two ends of the ice-cutting blade 16 during the descent and reset process by matching the effective circumferential length of the inner and outer guide grooves 1402 with the effective rotation radius of the two connecting shafts 28, and reduces the motion resistance caused by blade tilting and the bias of the connecting shafts 28 on the guide grooves 1402.

[0077] Based on this, since the descent, flipping and resetting processes at both ends of the ice cutter blade 16 are more coordinated, the torsional load on the ice cutter blade 16 when the gear 23 and rack 24 mesh asynchronously at both ends can be further reduced, making the flipping and re-fitting process of the ice cutter blade 16 more stable.

[0078] The above-disclosed examples are merely preferred embodiments of this application, intended to facilitate understanding and implementation by those skilled in the art. However, they cannot be used to limit the scope of this application. Therefore, equivalent variations made within the scope of this application are still within the scope of this application.

Claims

1. A dual-beam staggered-phase continuous ice-making and de-icing system for a tube ice machine, characterized in that, include: An evaporator (1) is provided with multiple sets of copper tubes (105); the multiple sets of copper tubes (105) are divided into bundle group (a) and bundle group (b); An exhaust port (101) is located at the top of the shell of the evaporator (1) and at the bundle (a) and bundle (b); The liquid supply interface, the de-icing and liquid discharge outlet and the hot gas inlet (102) are located at the bottom of the shell of the evaporator (1) and are grouped together corresponding to the bundle group (a) and the bundle group (b); A water distribution plate (108) is set at the top of the evaporator (1) to introduce ice-making water into the copper tubes (105) of the bundle (a) and bundle (b) respectively. An ice-cutting mechanism is installed at the bottom of the lower tube plate (104) at the bottom of the evaporator (1) to cut off the ice columns that fall out inside the copper tube (105).

2. The dual-beam staggered-phase continuous ice-making and de-icing system for a tube ice machine according to claim 1, characterized in that: An upper tube plate (107) is provided at the top of the evaporator (1). The copper tube (105) is fixed between the upper tube plate (107) and the lower tube plate (104). A partition (106) is fixed between the upper tube plate (107) and the lower tube plate (104). The partition (106) is used to divide the copper tube (105) in the evaporator (1) into bundle group (a) and bundle group (b).

3. The dual-beam staggered-phase continuous ice-making and de-icing system for a tube ice machine according to claim 2, characterized in that: The water distribution plate (108) is located at the boundary between the bundle (a) and the bundle (b) and is fixedly connected to the upper tube plate (107).

4. The dual-beam staggered-phase continuous ice-making and de-icing system for a tube ice machine according to claim 1, characterized in that: The ice-cutting mechanism includes a rotating column (18) and a rotating ring (10) arranged coaxially. The rotating column (18) is located at the bottom axis of the lower tube plate (104) and is rotatably arranged relative to the lower tube plate (104). The rotating ring (10) is coaxially sleeved on the outside of the rotating column (18) and an ice receiving plate (17) and an ice-cutting blade (16) are circumferentially fixed between the two. The ice receiving plate (17) is provided with a through groove, and the ice cutter (16) is provided above the ice receiving plate (17) and aligned with the through groove. The ice cutter (16) is in contact with the bottom of the lower tube plate (104).

5. The dual-beam staggered-phase continuous ice-making and de-icing system for a tube ice machine according to claim 4, characterized in that: Both ends of the ice cutter (16) are fixed with connectors (21). The ice cutter (16) is connected to the rotating column (18) and the rotating ring (10) through the connectors (21). The ice cutter (16) is configured to be able to move vertically relative to the rotating column (18) and the rotating ring (10). The ice cutter (16) can rotate 180° around the horizontal axis during vertical movement.

6. The dual-beam staggered-phase continuous ice-making and de-icing system for a tube ice machine according to claim 5, characterized in that: The connector (21) has a rotating shaft (22) fixed at one end away from the ice cutter (16). The end of the rotating shaft (22) is provided with a vertically arranged connecting plate (25). The rotating shaft (22) is rotatably connected to the connecting plate (25). The connecting plate (25) located at the rotating column (18) is set through the rotating column (18) downward along the axial direction and is slidably engaged with it. The connecting plate (25) located at the rotating ring (10) is set through the rotating ring (10) downward along the axial direction and is slidably engaged with it. The outer side of the rotating shaft (22) is fitted with a gear (23) through a one-way bearing. The rotating column (18) and the rotating ring (10) are both fixed with racks (24), so that the gear (23) can mesh with the rack (24) when the ice cutter (16) moves in the vertical direction.

7. The dual-beam staggered-phase continuous ice-making and de-icing system for a tube ice machine according to claim 6, characterized in that: Both the rotating column (18) and the rotating ring (10) are provided with driving components, which are configured to drive the connecting plate (25) to move in the vertical direction so as to drive the ice cutter (16) to flip.

8. The dual-beam staggered-phase continuous ice-making and de-icing system for a tube ice machine according to claim 7, characterized in that: The driving assembly includes a ring body fixed relative to the rotating ring (10) or the rotating column (18). The ring body includes an inner fixing ring (14) disposed at the bottom of the rotating column (18) and an outer fixing ring (13) disposed at the bottom of the rotating ring (10). The inner peripheral wall of the ring body is provided with a positioning groove (1401) and a guide groove (1402) communicating with it. The guide groove (1402) protrudes vertically downward along the axial direction of the ring body relative to the positioning groove (1401), and the guide groove (1402) and the positioning groove (1401) are connected to the positioning groove (1401). The two ends of the intersecting positioning groove (1401) are respectively provided with a first guide (27) and a second guide (26). The first guide (27) and the second guide (26) are both hinged to the ring body. An electric push rod is provided on the outside of the ring body. The tail end of the electric push rod is hinged to the ring body. The output end of the electric push rod is hinged to the first guide (27). The bottom end of the connecting plate (25) is provided with a connecting shaft (28) that slides with the positioning groove (1401) and the guide groove (1402).

9. A tube ice machine dual-beam staggered-phase continuous ice-making and de-icing system according to claim 8, characterized in that: A convex shaft is fixedly provided on the outer side of the first guide member (27), and a collar fixed at the output end of the electric push rod is sleeved on the outer side of the convex shaft.

10. A tube ice machine dual-beam staggered-phase continuous ice-making and de-icing system according to claim 8, characterized in that: The hinge axis between the tail end of the electric push rod and the ring body, the hinge axis between the output end of the electric push rod and the first guide (27), and the hinge axis between the first guide (27) and the ring body are arranged in parallel to each other.

Images