Anti-jamming ice maker

Abstract

The utility model relates to ice maker technical field especially ice maker of preventing jamming, including having for with ice making cylinder intercommunication arrangement refrigerating system, refrigerating system includes compressor and low pressure pipe, low pressure pipe one end with ice making cylinder's inside intercommunication arrangement, other end with compressor's suction end intercommunication arrangement, still including having intercommunication arrangement's delivery pipe, condenser, high pressure pipe and capillary tube, delivery pipe one end with compressor's outlet end intercommunication arrangement, other end with condenser's initial end intercommunication arrangement, still including having for controlling low pressure pipe and high pressure pipe on-off on-off control part, low pressure pipe and high pressure pipe intercommunication time, gaseous refrigerant bypasses ice making cylinder and flows back to compressor in, through the on-off control part intercommunication arrangement between low pressure pipe and high pressure pipe, realize separating compressor and ice making cylinder, refrigerant can not enter into ice making cylinder, avoid because ice making cylinder surface icing speed too fast and lead to scraper jamming, improved this ice maker's ice making efficiency and life.

Description

Technical Field

[0001] This utility model relates to the field of ice maker technology, and in particular to an ice maker that prevents jamming. Background Technology

[0002] In the food service, commercial cold chain, and household sectors, ice makers, as core equipment providing low-temperature cold sources and ice products (such as smoothies, crushed ice, and block ice), directly impact user experience and operational efficiency through their operational stability, ice-making efficiency, and equipment durability. Among these, ice makers employing a "cylindrical ice-making cylinder + spiral scraper ice-scraping module" are widely used in commercial settings such as milk tea shops, coffee shops, and cold drink processing workshops, as well as in households with high demand for smoothies, due to their advantages such as fast ice-making speed, uniform ice product shape (e.g., high smoothness), and small space occupation. This has made them one of the mainstream structures in the current ice-making equipment field.

[0003] However, in existing refrigeration system designs, the refrigerant always circulates along the path of "compressor → delivery pipe → condenser → high-pressure pipe → capillary tube → ice maker → low-pressure pipe → compressor." Even when the ice layer on the outer surface of the ice maker has reached a certain thickness, the refrigeration system continues to deliver low-pressure, low-temperature liquid refrigerant into the ice maker. The ice layer on the outer surface of the ice maker thickens rapidly, and the low temperature makes the ice layer adhere strongly to the cylinder wall. When the ice layer becomes thick enough, the ice scraping resistance exceeds the load capacity of the drive motor, causing the ice scraping module to jam, directly interrupting ice making. Prolonged stalling of the motor can easily lead to burnout, and the scraper and shaft may also wear and deform. Even with overload power-off protection, manual disassembly and cleaning are still required, which is troublesome and affects usability. Therefore, an anti-jamming ice maker is provided to solve the above technical problems. Utility Model Content

[0004] The purpose of this invention is to provide an ice maker that prevents jamming, addressing the shortcomings of existing technologies and solving the technical problem that existing ice makers are prone to jamming when scraping ice.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] An ice maker designed to prevent jamming includes an ice cylinder and an ice scraping module for scraping ice from the surface of the ice cylinder, and a refrigeration system that is connected to the ice cylinder and supplies refrigerant to its interior.

[0007] The refrigeration system includes a compressor and a low-pressure pipe. One end of the low-pressure pipe is connected to the inside of the ice-making cylinder, and the other end is connected to the suction end of the compressor. It also includes a delivery pipe, a condenser, a high-pressure pipe, and a capillary tube connected in sequence. One end of the delivery pipe is connected to the outlet end of the compressor, and the other end is connected to the beginning end of the condenser. The end end of the condenser is connected to the high-pressure pipe. One end of the capillary tube is connected to the high-pressure pipe, and the other end is connected to the inside of the ice-making cylinder.

[0008] The refrigeration system also includes an on / off control unit for controlling the connection and disconnection of the low-pressure pipe and the high-pressure pipe. When the low-pressure pipe and the high-pressure pipe are connected, the gaseous refrigerant bypasses the ice-making cylinder and flows back into the compressor.

[0009] Furthermore, the on / off control unit includes a first connecting branch pipe for connecting with a low-pressure pipe and a second connecting branch pipe for connecting with a high-pressure pipe, and a solenoid valve for controlling the connection or disconnection between the first connecting branch pipe and the second connecting branch pipe is installed between them.

[0010] Furthermore, it includes an outer cylinder and an inner cylinder coaxially disposed inside the outer cylinder, with a front sealing ring and a rear sealing ring spaced apart along the axial direction between the outer cylinder and the inner cylinder;

[0011] The outer edge of the front end face of the front sealing ring is welded and fixed to the inner wall of the front end of the outer cylinder to achieve a sealed connection between the front sealing ring and the outer cylinder; the inner edge of the front end face of the front sealing ring is welded and fixed to the outer wall of the front end of the inner cylinder to achieve a sealed connection between the front sealing ring and the inner cylinder; the outer edge of the rear end face of the rear sealing ring is welded and fixed to the inner wall of the rear end of the outer cylinder to achieve a sealed connection between the rear sealing ring and the outer cylinder; the inner edge of the rear end face of the rear sealing ring is welded and fixed to the outer wall of the rear end of the inner cylinder to achieve a sealed connection between the rear sealing ring and the inner cylinder.

[0012] Furthermore, the inner wall of the outer cylinder, the outer wall of the inner cylinder, the rear end face of the front sealing ring, and the front end face of the rear sealing ring together form an axially extending annular cylindrical refrigeration channel; the rear sealing ring is provided with a liquid delivery pipe and a gas delivery pipe that connect to the refrigeration channel.

[0013] Furthermore, one end of both the liquid infusion connection pipe and the gas infusion connection pipe is flush with the rear end face of the rear sealing ring, and the other end of both the liquid infusion connection pipe and the gas infusion connection pipe extends into the refrigeration channel.

[0014] Furthermore, the end of the infusion connection tube, which is flush with the rear end face of the rear sealing ring, is connected to the capillary tube, and the end of the gas connection tube, which is flush with the rear end face of the rear sealing ring, is connected to the low-pressure tube.

[0015] Furthermore, a cover plate is fixedly installed at the front end of the outer cylinder and the front end of the inner cylinder together, and the cover plate is used to seal the front end of the inner cylinder; the front end face of the front sealing ring, the inner side wall of the front end of the outer cylinder and the outer side wall of the front end of the inner cylinder together form an annular placement groove, and a sealing ring is placed in the placement groove. The sealing ring is a silicone sealing ring, and the sealing ring is placed between the cover plate and the front sealing ring.

[0016] Furthermore, the front end face of the front sealing ring is provided with several fasteners arranged in an array around its center point, and the cover plate is formed with several sleeves for fitting on the outside of the fasteners and for fixed connection thereto. The number of sleeves is the same as the number of fasteners and their positions correspond to each other.

[0017] Furthermore, an annular extension is formed on the edge of the cover plate near the front sealing ring, which is used to make an interference fit with the inner wall of the front end of the outer cylinder; an annular insert is formed in the middle of the cover plate near the front sealing ring, which is embedded in the inner cylinder and abuts against the inner wall of the inner cylinder.

[0018] Furthermore, the ice scraping module includes a spiral scraper sleeved on the outside of the outer cylinder and a rotating shaft passing through the inside of the inner cylinder. The rotating shaft is coaxially arranged with the inner cylinder, and one end of the rotating shaft passes through the cover plate and is fixedly connected to the spiral scraper; it also includes a drive device that is connected to the rotating shaft for transmission.

[0019] The beneficial effects of this invention are as follows: When the compressor is running, the low-pressure, low-temperature gaseous refrigerant inside the ice-making cylinder is drawn into the compressor through the low-pressure pipe, and the low-pressure, low-temperature gaseous refrigerant is compressed into a high-pressure, high-temperature gaseous refrigerant. After the compressor compresses the low-pressure, low-temperature gaseous refrigerant into a high-pressure, high-temperature gaseous refrigerant, the high-pressure, high-temperature gaseous refrigerant is then transported to the condenser through the delivery pipe for heat dissipation and cooling, so as to cool the high-pressure, high-temperature gaseous refrigerant into a high-pressure, room-temperature liquid refrigerant. Then, the high-pressure, room-temperature liquid refrigerant is transported through the high-pressure pipe and capillary tube to the inside of the ice-making cylinder.

[0020] During normal operation of this ice maker, the on / off control unit keeps the low-pressure pipe and high-pressure pipe disconnected, and the refrigerant's state changes and flow trajectory are as described above. When the scraper is about to jam, the system detects that the motor load is about to reach the motor's rated power and controls the condenser to stop operating, preventing it from inputting cold energy into the ice-making cylinder. However, while the condenser stops operating, the on / off control unit connects the low-pressure pipe and high-pressure pipe. The gaseous refrigerant flows through the condenser (since the condenser is not running, the refrigerant is still gaseous) and is guided by the on / off control unit into the low-pressure pipe. It is then drawn back into the compressor through the low-pressure pipe, achieving the return of the gaseous refrigerant. At this time, the thick ice layer adhering to the surface of the ice-making cylinder loses its cold energy supply, and the adhesion of the ice layer on the surface of the ice-making cylinder immediately decreases, and it is immediately scraped off by the ice scraping module. Then, after detecting that the ice scraping module has resumed normal operation, the on / off control unit disconnects the low-pressure pipe and high-pressure pipe, and the ice maker continues to operate normally.

[0021] By connecting the low-pressure pipe and the high-pressure pipe with an on / off control unit, the compressor and the ice maker are separated, preventing refrigerant from entering the ice maker and avoiding the scraper from getting stuck due to excessively fast freezing on the surface of the ice maker. This improves the ice-making efficiency and service life of the ice maker. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is a three-dimensional structural diagram of the present invention from another perspective.

[0024] Figure 3 This is a schematic diagram of the structure of the ice-making cylinder of this utility model.

[0025] Figure 4 This is a schematic diagram of the ice-making cylinder of this utility model from another perspective.

[0026] Figure 5 This is a schematic diagram of the internal structure of the ice-making cylinder of this utility model.

[0027] Figure 6 This is a schematic diagram of the internal structure of the ice-making cylinder of this utility model from another perspective.

[0028] Figure 7 This is an exploded view of the ice-making container of this utility model.

[0029] Figure 8 Another exploded view of the ice-making tube of this utility model.

[0030] Figure 9 This is a partial structural schematic diagram of the present invention.

[0031] The reference numerals in the figures include:

[0032] 1. Outer cylinder; 101. Connecting flange; 102. Fixing groove; 2. Inner cylinder; 3. Front sealing ring; 4. Rear sealing ring; 401. Liquid supply connection pipe; 402. Gas supply connection pipe; 5. Placement groove; 6. Sealing ring; 601. Positioning hole; 7. Cover plate; 701. Sleeve; 702. Extension; 703. Embedded ring; 704. Reinforcing rib; 705. Mounting groove; 8. Oil seal ring; 9. Fixing component; 10. Refrigeration passage;

[0033] 11. Shaft; 12. Spiral scraper; 13. Drive unit; 14. Compressor; 15. Low-pressure pipe; 16. Delivery pipe; 17. Cooling coil; 18. Cooling fins; 19. High-pressure pipe; 20. Filter; 21. Capillary tube; 22. First connecting branch pipe; 23. Second connecting branch pipe; 24. Solenoid valve; 25. Fan; 26. Temperature sensor. Detailed Implementation

[0034] The following is a detailed description of an ice maker with anti-jamming features, in conjunction with the accompanying drawings.

[0035] like Figure 1-2 As shown, an embodiment of the anti-jamming ice maker of this utility model includes an ice maker cylinder and an ice scraping module for scraping the ice layer on the surface of the ice maker cylinder, and also includes a refrigeration system for communicating with the ice maker cylinder and supplying refrigerant to its interior. The ice maker contains an internal stirring frame (existing structure, not shown in the diagram) for holding water or beverages. An ice-making cylinder is mounted horizontally on the inner wall of the stirring frame. The ice-scraping part of the ice-scraping module is fitted onto the outside of the ice-making cylinder and also placed within the stirring frame. The drive part of the ice-scraping module is located on the outside of the stirring frame (i.e., inside the ice maker). After the refrigeration system delivers refrigerant into the ice-making cylinder, the heat exchange within the cylinder causes an ice layer of water or beverage to form on its outer surface. The ice-scraping module then scrapes away this ice layer, allowing the outer surface to re-engage with the liquid water or beverage. This process is repeated, with the ice layer being scraped away repeatedly and the ice-scraping part of the module stirring the water or beverage within the stirring frame, gradually transforming it from a liquid state into a slushy state, thus completing the ice-making process. Finally, the outlet of the stirring frame is opened, and the slushy is extruded. This ice-making process is existing technology and will not be described in detail here.

[0036] In this embodiment, the refrigeration system includes a compressor 14 and a low-pressure pipe 15. One end of the low-pressure pipe 15 is connected to the interior of the ice-making cylinder, and the other end is connected to the suction end of the compressor 14. When the compressor 14 is running, the low-pressure, low-temperature gaseous refrigerant inside the ice-making cylinder is drawn into the compressor 14 through the low-pressure pipe 15, and the low-pressure, low-temperature gaseous refrigerant is compressed into a high-pressure, high-temperature gaseous refrigerant. The system also includes a delivery pipe 16, a condenser, a high-pressure pipe 19, and a capillary tube 21 connected in sequence. One end of the delivery pipe 16 is connected to the outlet end of the compressor 14, and the other end is connected to the initial end of the condenser. The end of the condenser is connected to the high-pressure pipe 19. One end of the capillary tube 21 is connected to the high-pressure pipe 19, and the other end is connected to the interior of the ice-making cylinder. The compressor 14 first compresses the low-pressure, low-temperature gaseous refrigerant into a high-pressure, high-temperature gaseous refrigerant. Then, the high-pressure, high-temperature gaseous refrigerant is transported to the condenser through the delivery pipe 16 for heat dissipation and cooling, so as to cool the high-pressure, high-temperature gaseous refrigerant into a high-pressure, room-temperature liquid refrigerant. The high-pressure, room-temperature liquid refrigerant is then transported through the high-pressure pipe 19 and the capillary tube 21 to the inside of the ice-making cylinder.

[0037] The high-pressure, room-temperature liquid refrigerant output from the condenser is transported through capillary tube 21 to convert it into a low-pressure, low-temperature liquid refrigerant. This allows the refrigerant to evaporate and absorb heat in the ice-making cylinder, thereby achieving refrigeration. Capillary tube 21 utilizes its "thin, long, and extremely small inner diameter" structural characteristics to create flow resistance for the refrigerant, thereby precisely controlling the pressure, temperature, and flow rate of the refrigerant.

[0038] A filter 20 is also installed between the capillary tube 21 and the high-pressure tube 19. By setting the filter 20, impurities in the refrigerant are filtered out to prevent metal shavings, welding slag and other impurities from clogging the capillary tube 21, thereby improving the service life of the ice maker.

[0039] Furthermore, the condenser is existing technology, specifically including a heat dissipation coil 17, heat dissipation fins 18, and a fan 25. One end of the heat dissipation coil 17 is connected to the delivery pipe 16, and the other end is connected to the high-pressure pipe 19. After the high-pressure, high-temperature gaseous refrigerant is delivered into the heat dissipation coil 17, the heat in the refrigerant is transferred to the heat dissipation fins 18. The fan 25 blows away the heat from the heat dissipation fins 18, thus cooling the high-pressure, high-temperature gaseous refrigerant into a high-pressure, room-temperature liquid refrigerant. The specific structure of the condenser is a conventional design and will not be described in detail here.

[0040] In this embodiment, the refrigeration system also includes an on / off control unit for controlling the connection and disconnection of the low-pressure pipe 15 and the high-pressure pipe 19. When the low-pressure pipe 15 and the high-pressure pipe 19 are connected, the gaseous refrigerant bypasses the ice-making cylinder and flows back into the compressor 14. Specifically: During normal operation of the ice maker, the on / off control unit controls the low-pressure pipe 15 and the high-pressure pipe 19 to be disconnected, and the state change and flow trajectory of the refrigerant are as described above; when the scraper is about to jam (due to the excessively fast freezing speed on the surface of the ice-making cylinder, causing the scraper to be unable to scrape), it is detected that the motor load is about to reach the rated power of the motor, and the condenser is controlled to stop running, so that it cannot input cold energy into the ice-making cylinder. However, at the same time as the condenser stops running, the on / off control unit controls the low-pressure pipe 15 and the high-pressure pipe 19 to be connected, and the gaseous refrigerant flows through the condenser. After the refrigerant is discharged (since the condenser is not running, the refrigerant is still in a gaseous state), it is guided by the on / off control unit into the low-pressure pipe 15, and then drawn back into the compressor 14 through the low-pressure pipe 15, realizing the return of gaseous refrigerant. At this time, the thick ice layer adhering to the surface of the ice maker loses its cooling energy supply, and the adhesion of the ice layer on the surface of the ice maker will immediately decrease. It will be scraped off immediately by the scraper. After detecting that the ice scraping module has resumed normal operation, the on / off control unit controls the low-pressure pipe 15 to disconnect from the high-pressure pipe 19, and the ice maker continues to work normally. In addition, because the diameter of the capillary tube 21 is much smaller than that of the on / off control unit and the high-pressure pipe 19, the gaseous refrigerant bypasses the capillary tube 21 and the ice maker due to the pressure difference, and therefore will not enter the capillary tube 21 and the ice maker.

[0041] The on / off control unit includes a first connecting branch pipe 22 for connecting to the low-pressure pipe 15 and a second connecting branch pipe 23 for connecting to the high-pressure pipe 19. A solenoid valve 24 for controlling the connection or disconnection between the first connecting branch pipe 22 and the second connecting branch pipe 23 is installed between them. By operating the solenoid valve 24, the connection or disconnection of the first connecting branch pipe 22 and the second connecting branch pipe 23 can be controlled, thereby controlling the connection or disconnection between the low-pressure pipe 15 and the high-pressure pipe 19. When the low-pressure pipe 15 and the high-pressure pipe 19 are connected, the compressor 14 is isolated from the ice maker.

[0042] like Figure 2-6As shown, the ice-making container includes an outer cylinder 1 and an inner cylinder 2 coaxially disposed inside the outer cylinder 1. Both the outer cylinder 1 and the inner cylinder 2 are cylindrical with their axes arranged transversely. A front sealing ring 3 and a rear sealing ring 4 are provided between the outer cylinder 1 and the inner cylinder 2, spaced back and forth along the axial direction. Both the front sealing ring 3 and the rear sealing ring 4 are annular structures (both have rectangular cross-sections). The outer circumference of the front sealing ring 3 is sealed and fixedly connected to the inner wall of the front end of the outer cylinder 1, and the inner circumference of the front sealing ring 3 is sealed and fixedly connected to the outer wall of the front end of the inner cylinder 2. Similarly, the outer circumference of the rear sealing ring 4 is sealed and fixedly connected to the inner wall of the rear end of the outer cylinder 1, and the inner circumference of the rear sealing ring 4 is sealed and fixedly connected to the outer wall of the rear end of the inner cylinder 2. Through the above connections, the outer cylinder 1 and the inner cylinder 2 are sealed and isolated at the front and rear ends, respectively.

[0043] The inner wall of the outer cylinder 1, the outer wall of the inner cylinder 2, the rear end face of the front sealing ring 3, and the front end face of the rear sealing ring 4 together form an axially extending annular cylindrical refrigeration channel 10. The inner cylinder 2 and the outer cylinder 1 are coaxially positioned through the tolerance fit between the inner hole and outer circle of the front sealing ring 3 and the rear sealing ring 4, ensuring that the radial width of the formed refrigeration channel 10 is uniform. The refrigeration channel 10 is used to circulate refrigerant and achieves the ice-making function through heat exchange with the ice-making area on the outside of the outer cylinder 1. The axial length of this channel is equal to the axial distance between the rear end face of the front sealing ring 3 and the front end face of the rear sealing ring 4, and the radial width is equal to the difference between the inner radius of the outer cylinder 1 and the outer radius of the inner cylinder 2.

[0044] The outer edge of the front face of the front sealing ring 3 is welded and fixed to the inner wall of the front end of the outer cylinder 1, and the inner edge of the front face of the front face of the front sealing ring 3 is welded and fixed to the outer wall of the front end of the inner cylinder 2; the outer edge of the rear face ...

[0045] A liquid-feeding connecting pipe 401 and a gas-feeding connecting pipe 402, which connect to the refrigeration channel 10, are provided on the rear sealing ring 4. The liquid-feeding connecting pipe 401 is used to directly inject liquid refrigerant into the refrigeration channel 10. After the refrigerant is converted into a gaseous state in the refrigeration channel 10, it is transported out of the refrigeration channel 10 through the gas-feeding connecting pipe 402. One end of both the liquid-feeding connecting pipe 401 and the gas-feeding connecting pipe 402 is flush with the rear end face of the rear sealing ring 4, and the other end of both the liquid-feeding connecting pipe 401 and the gas-feeding connecting pipe 402 extends into the refrigeration channel 10. The liquid-feeding connecting pipe 401 is positioned above, and the gas-feeding connecting pipe 402 is positioned below. The diameter of the liquid-feeding connecting pipe 401 is smaller than the diameter of the gas-feeding connecting pipe 402. The length direction of the liquid-feeding connecting pipe 401, the length direction of the gas-feeding connecting pipe 402, and the axial direction of the refrigeration channel 10 are parallel to each other. By extending the ends of the liquid inlet pipe 401 and the gas inlet pipe 402 into the interior of the refrigeration channel 10, the rear end face of the rear sealing ring 4 is unobstructed. When laser welding is performed on the outer edge of the rear end face of the rear sealing ring 4 to the inner side wall of the rear end of the outer cylinder 1, and on the inner edge of the rear end face of the rear sealing ring 4 to the outer side wall of the rear end of the inner cylinder 2, the welding head of the welding equipment can move freely without being blocked, thus improving the efficiency of the production and processing of this ice-making device.

[0046] The end of the liquid-feeding connecting pipe 401, flush with the rear end face of the rear sealing ring 4, is connected to the capillary tube 21. The end of the gas-feeding connecting pipe 402, also flush with the rear end face of the rear sealing ring 4, is connected to the low-pressure pipe 15. Gaseous refrigerant in the refrigeration channel 10 is transported to the compressor 14 via the gas-feeding connecting pipe 402 and the low-pressure pipe 15, while liquid refrigerant is transported to the refrigeration channel 10 via the capillary tube 21 and the liquid-feeding connecting pipe 401. When the low-temperature, low-pressure liquid refrigerant enters the refrigeration channel 10, it absorbs a large amount of heat (from water or beverages that need to be made into ice, through direct heat exchange via the outer cylinder 1) and evaporates into a low-temperature, low-pressure gas. The heat is rapidly absorbed, and the temperature drops below freezing. An ice layer gradually forms on the outer wall of the outer cylinder 1. The heat-absorbing low-temperature, low-pressure gaseous refrigerant (mixed with a small amount of liquid) is then drawn back into the compressor 14, and the cycle repeats.

[0047] In this embodiment, a connecting flange 101 is provided on the outer circumference of the outer cylinder 1 near the rear sealing ring 4. The connecting flange 101 is formed with a plurality of fixing grooves 102 arranged equidistantly along its circumference. By passing a plurality of bolts through different fixing grooves 102 and tightening the bolts to fix them in the ice maker, the connecting flange 101 is pressed together during the tightening process, thereby fixing the outer cylinder 1 in the ice maker and realizing the installation of the ice maker.

[0048] like Figure 7-8As shown, a cover plate 7 is fixedly installed at the front end of both the outer cylinder 1 and the inner cylinder 2. The cover plate 7 seals the front end of the inner cylinder 2 to prevent water or beverages inside the stirring frame from leaking out from the inside of the inner cylinder 2. The front end face of the front sealing ring 3, the inner wall of the front end of the outer cylinder 1, and the outer wall of the front end of the inner cylinder 2 together form an annular placement groove 5. A sealing ring 6, which is a silicone sealing ring, is placed in the placement groove 5 and positioned between the cover plate 7 and the front sealing ring 3. By setting the sealing ring 6, the sealing performance between the cover plate 7 and the front end of the outer cylinder 1, and between the cover plate 7 and the front end of the inner cylinder 2, is improved, preventing water or beverages outside the outer cylinder 1 from leaking out from the gap between the cover plate 7 and the outer cylinder 1, and from the gap between the cover plate 7 and the inner cylinder 2.

[0049] To achieve the fixed installation of the cover plate 7, a number of fixing members 9 are arranged in an array around its center point on the front end face of the front sealing ring 3. The cover plate 7 is formed with a number of sleeves 701 for fitting over and fixing to the outside of the fixing members 9. The number of sleeves 701 is the same as the number of fixing members 9 and their positions correspond. When the cover plate 7 is installed at the front end of the outer cylinder 1 and the front end of the inner cylinder 2, each sleeve 701 is fitted over the outside of a different fixing member 9. Then, the threaded part of the bolt passes through the sleeve 701 and is threadedly connected to the corresponding fixing member 9. The threaded part of the bolt is placed on the outside of the cover plate 7. After the bolt passes through the sleeve 701 and is tightened on the fixing member 9, the cover plate 7 can be fixedly installed at the front end of the outer cylinder 1 and the front end of the inner cylinder 2.

[0050] In addition, a number of positioning holes 601 are formed on the sealing ring 6 for the fasteners 9 and the sleeve 701 to pass through. The number of positioning holes 601 is the same as the number of fasteners 9 and their positions correspond. By setting the positioning holes 601, the fasteners 9 and the sleeve 701 can be fixedly connected. Furthermore, during the process of inserting the sealing ring 6 into the placement groove 5, the fasteners 9 pass through the positioning holes 601, which can play a certain positioning role for the sealing ring 6.

[0051] The cover plate 7 has an annular extension 702 formed on the edge near the front sealing ring 3. The extension 702 is used for interference fit with the inner wall of the front end of the outer cylinder 1. An annular insert 703 is formed in the middle of the cover plate 7 near the front sealing ring 3. The insert 703 is embedded in the inner cylinder 2 and abuts against the inner wall of the inner cylinder 2. When the cover plate 7 is installed at the front end of the outer cylinder 1 and the front end of the inner cylinder 2, the extension 702 extends to the inner side of the front end of the outer cylinder 1 and is interference fit with it. At the same time, the insert 703 is embedded in the interior of the front end of the inner cylinder 2. After the cover plate 7 is installed, the combined effect of the extension 702 and the insert 703 not only improves the structural strength of the ice maker, but also improves the accuracy of the cover plate 7 during installation.

[0052] In addition, the inner side of the ring 703 is provided with a reinforcing rib 704 to strengthen the overall structural strength of the cover plate 7; by providing the reinforcing rib 704, the cover plate 7 will not deform after long-term exposure to alternating hot and cold environments, thus improving the quality of the ice maker.

[0053] An installation slot 705 for mounting a temperature sensor is provided inside the ring 703. The sensing end of the temperature sensor passes through the cover plate 7 and extends to its outer side to detect the temperature of the water or beverage outside the ice maker. When the temperature of the water or beverage outside the ice maker reaches a specified temperature, it is detected by the sensing end of the temperature sensor, which transmits the temperature information to the ice maker, and the ice maker controls the refrigeration system to stop operating. Conversely, when the sensing end of the temperature sensor detects that the temperature of the water or beverage is too high, it transmits the temperature information to the ice maker, which controls the refrigeration system to operate to process the water or beverage into ice.

[0054] like Figure 9 As shown, the ice-scraping module includes a spiral scraper 12 sleeved on the outside of the outer cylinder 1 for scraping ice and a rotating shaft 11 passing through the inside of the inner cylinder 2. The rotating shaft 11 is coaxially arranged with the inner cylinder 2, and one end of the rotating shaft 11 passes through the cover plate 7 and is fixedly connected to the spiral scraper 12. The other end of the rotating shaft 11 passes through the stirring frame and extends to its outside. It also includes a drive device 13 installed on the outside of the stirring frame. The drive device 13 is existing technology and can be a drive element such as a motor. The drive device 13 is connected to the rotating shaft 11 for transmission. By running the drive device 13, the rotating shaft 11 can be driven to rotate, thereby driving the spiral scraper 12 to select and scrape off the ice layer on the surface of the outer cylinder 1. At the same time, the scraped ice chips are stirred and mixed with water or beverages to form slush.

[0055] An oil seal ring 8 is installed at the rotatable connection between the rotating shaft 11 and the cover plate 7. The oil seal ring 8, the inner cylinder 2, and the outer cylinder 1 are coaxially arranged. By setting the oil seal ring 8, when the drive device 13 drives the rotating shaft 11 to rotate, the oil seal ring 8 seals the rotatable connection between the rotating shaft and the cover plate 7, thereby preventing water or beverages around the ice maker from leaking out from the hinge between the rotating shaft and the cover plate 7.

[0056] In summary, this utility model possesses the aforementioned excellent characteristics, enabling it to achieve unprecedented efficiency in use and thus become a highly practical product.

[0057] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. An ice maker designed to prevent jamming, characterized in that: It includes an ice-making cylinder and an ice-scraping module for scraping ice from the surface of the ice-making cylinder, as well as a refrigeration system that is connected to the ice-making cylinder and delivers refrigerant to its interior. The refrigeration system includes a compressor (14) and a low-pressure pipe (15). One end of the low-pressure pipe (15) is connected to the inside of the ice-making cylinder, and the other end is connected to the suction end of the compressor (14). It also includes a delivery pipe (16), a condenser, a high-pressure pipe (19), and a capillary tube (21) connected in sequence. One end of the delivery pipe (16) is connected to the outlet end of the compressor (14), and the other end is connected to the beginning end of the condenser. The end end of the condenser is connected to the high-pressure pipe (19). One end of the capillary tube (21) is connected to the high-pressure pipe (19), and the other end is connected to the inside of the ice-making cylinder. The refrigeration system also includes an on / off control unit for controlling the on / off of the low-pressure pipe (15) and the high-pressure pipe (19). When the low-pressure pipe (15) and the high-pressure pipe (19) are connected, the gaseous refrigerant bypasses the ice maker and flows back into the compressor (14).

2. The ice maker with anti-jamming feature according to claim 1, characterized in that: The on / off control unit includes a first connecting branch pipe (22) for connecting to the low-pressure pipe (15) and a second connecting branch pipe (23) for connecting to the high-pressure pipe (19). A solenoid valve (24) for controlling the connection or disconnection of the two is installed between the first connecting branch pipe (22) and the second connecting branch pipe (23).

3. The anti-jamming ice maker according to claim 1, characterized in that: It includes an outer cylinder (1) and an inner cylinder (2) coaxially disposed inside the outer cylinder (1). A front sealing ring (3) and a rear sealing ring (4) are provided between the outer cylinder (1) and the inner cylinder (2) at intervals along the axial direction. The outer edge of the front end face of the front sealing ring (3) is welded and fixed to the inner wall of the front end of the outer cylinder (1) so that the front sealing ring (3) and the outer cylinder (1) are sealed together; the inner edge of the front end face of the front sealing ring (3) is welded and fixed to the outer wall of the front end of the inner cylinder (2) so that the front sealing ring (3) and the inner cylinder (2) are sealed together; the outer edge of the rear end face of the rear sealing ring (4) is welded and fixed to the inner wall of the rear end of the outer cylinder (1) so that the rear sealing ring (4) and the outer cylinder (1) are sealed together; the inner edge of the rear end face of the rear sealing ring (4) is welded and fixed to the outer wall of the rear end of the inner cylinder (2) so that the rear sealing ring (4) and the inner cylinder (2) are sealed together.

4. An ice maker with anti-jamming feature according to claim 3, characterized in that: The inner wall of the outer cylinder (1), the outer wall of the inner cylinder (2), the rear end face of the front sealing ring (3) and the front end face of the rear sealing ring (4) together form an axially extending annular columnar refrigeration channel (10); the rear sealing ring (4) is provided with a liquid supply connection pipe (401) and a gas supply connection pipe (402) that connect the refrigeration channel (10).

5. An ice maker with anti-jamming feature according to claim 3, characterized in that: One end of the liquid infusion connection pipe (401) and the gas infusion connection pipe (402) are flush with the rear end face of the rear sealing ring (4), and the other end of the liquid infusion connection pipe (401) and the gas infusion connection pipe (402) extend into the refrigeration channel (10).

6. An ice maker with anti-jamming feature according to claim 5, characterized in that: The end of the infusion connection tube (401) flush with the rear end face of the rear sealing ring (4) is connected to the capillary tube (21), and the end of the gas connection tube (402) flush with the rear end face of the rear sealing ring (4) is connected to the low pressure tube (15).

7. An ice maker with anti-jamming feature according to claim 3, characterized in that: A cover plate (7) is fixedly installed at the front end of the outer cylinder (1) and the front end of the inner cylinder (2). The cover plate (7) is used to seal the front end of the inner cylinder (2). The front end face of the front sealing ring (3), the inner side wall of the front end of the outer cylinder (1) and the outer side wall of the front end of the inner cylinder (2) are used to form an annular placement groove (5). A sealing ring (6) is placed in the placement groove (5). The sealing ring (6) is a silicone sealing ring and is placed between the cover plate (7) and the front sealing ring (3).

8. An ice maker with anti-jamming feature according to claim 7, characterized in that: The front sealing ring (3) has a number of fasteners (9) arranged in an array around its center point on its front end face. The cover plate (7) is formed with a number of sleeves (701) for sleeved on the outside of the fasteners (9) and fixedly connected to them. The number of sleeves (701) is the same as the number of fasteners (9) and their positions correspond.

9. An ice maker with anti-jamming feature according to claim 8, characterized in that: The edge of the cover plate (7) near the front sealing ring (3) is formed with an annular extension (702), which is used to press-fit with the inner wall of the front end of the outer cylinder (1); the middle part of the cover plate (7) near the front sealing ring (3) is formed with an annular insert (703), which is embedded in the inner cylinder (2) and abuts against the inner wall of the inner cylinder (2).

10. An ice maker with anti-jamming feature according to claim 7, characterized in that: The ice scraping module includes a spiral scraper (12) sleeved on the outside of the outer cylinder (1) and a rotating shaft (11) passing through the inside of the inner cylinder (2). The rotating shaft (11) is coaxially arranged with the inner cylinder (2), and one end of the rotating shaft (11) passes through the cover plate (7) and is fixedly connected to the spiral scraper (12). It also includes a drive device (13) that is connected to the rotating shaft (11) for transmission.

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