Sprinkling irrigation type ice maker

Abstract

A spray irrigation type ice maker comprises a water tank, a water inlet device, a spray head assembly and a refrigerating system, the water tank is communicated with the spray head assembly through the water inlet device, the refrigerating system comprises an ice making evaporator, a plurality of ice making molds and a refrigerating coil for a refrigerant to pass through are arranged in the ice making evaporator, and the refrigerating coil is fully wound on the peripheries of the ice making molds. The nozzle assemblies are in one-to-one correspondence with the ice-making molds, the ice-making molds cover the nozzle assemblies, forming cavities are formed in the ice-making molds, and the nozzle assemblies are communicated with the forming cavities. According to the ice making machine, the spray head assembly is arranged, the multiple ice making molds are arranged in the ice making evaporator, the refrigerating coil is used for allowing a refrigerant to pass through, water sprayed out of the spray head assembly is poured into the forming cavity so that ice blocks can be formed in the forming cavity, and due to the fact that the ice making molds are regular in shape, the made ice blocks are regular in shape and attractive in appearance; the size of the ice making mold is large, so that the size of the made ice block is large, and the ice block melts slowly due to the fact that the size of the ice block is large and the shape of the ice block is regular.

Description

Technical Field

[0001] The present invention relates to the technical field of ice-making machines, and particularly to a spray-irrigation type ice-making machine. Background Art

[0002] An ice-making machine is a device used to make ice cubes or crushed ice; they are usually used in commercial places such as bars, restaurants, cold drink shops, and supermarkets, as well as in household refrigerators and freezers; it is also an essential refrigeration device for entertainment and rest in the sweltering summer; currently on the market, there are bullet ice ice-making machines, spray ice ice-making machines, extruded ice ice-making machines, flowing water ice ice-making machines, ball ice; the ice cubes made by these ice-making machines have irregular shapes, small sizes, and fast melting speeds. In order to solve the above problems, Chinese Patent Document No. CN220206116U disclosed an ice-making machine on December 19, 2023, which includes a frame, an upper ice mold, a lower ice mold, a refrigeration unit, a water supply unit, and a driving unit. The upper ice mold and the lower ice mold can be relatively movably assembled or separated through the driving unit. The lower mold realizes separation and splicing with the upper mold through a simple sliding lifting mechanism; this ice-making machine sprays water into the ice-making mold cavity jointly formed by the upper mold cavity and the lower mold cavity through a nozzle. Since the ice-making mold cavity has a regular shape, the ice cubes made are regular in shape, and the size of the made ice cubes is larger, and the ice cubes melt slower; however, this structure makes the evaporation tube can only be wound around the upper ice mold, resulting in lower heat exchange efficiency and slower ice formation in the lower mold cavity; in addition, the ice removal method of this ice-making machine is that the lower ice mold moves downward, thereby opening the ice-making mold cavity, and then the ice guiding mechanism is driven by the driven mechanism to rotate and turn into the space between the upper ice mold and the lower ice mold below the upper mold cavity. The ice guiding mechanism catches the ice cubes falling off from the upper mold cavity, and the ice cubes fall into the ice basket along the ice guiding mechanism; but when the ice-making mold cavity is full of ice, the ice cubes may stay on the lower mold cavity after the lower ice mold moves downward, resulting in failure to remove ice; in addition, the setting of the driven mechanism and the ice guiding mechanism makes the structure of the ice-making machine more complex and occupies a larger space, making the overall volume of the ice-making machine larger.

[0003] Therefore, it is necessary to make further improvements. Summary of the Invention

[0004] The purpose of the present invention is to provide a spray-irrigation type ice-making machine with simple structure, good ice-making effect, convenient use, high ice-making efficiency, and strong practicability, so as to overcome the deficiencies of the prior art.

[0005] A sprinkler-type ice maker designed for this purpose is characterized in that it includes a water tank, a water inlet device, a nozzle assembly, and a refrigeration system. The water tank is connected to the nozzle assembly through the water inlet device. The refrigeration system includes an ice-making evaporator, in which several ice-making molds and a refrigeration coil for the passage of refrigerant are provided. The refrigeration coil winds around the outer periphery of the ice-making molds. The nozzle assembly corresponds to the ice-making molds one by one, and the ice-making molds cover the nozzle assembly. A forming cavity is provided in the ice-making molds, and the nozzle assembly is connected to the forming cavity. The water sprayed by the nozzle assembly is poured into the forming cavity to form ice cubes in the forming cavity.

[0006] The water inlet device includes an inner tank, a water discharge valve, a water pump, and a spray pipe. The water inlet end of the water discharge valve is connected to the water tank, the water outlet end of the water discharge valve is connected to the inner tank, the water inlet end of the water pump is connected to the inner tank, the water outlet end of the water pump is connected to the spray pipe, and the nozzle assembly is linearly arranged on the spray pipe.

[0007] The nozzle assembly includes a plug nozzle and a disc. Several water outlet joints are provided on the spray pipe. The plug nozzle is connected to the water outlet joint, and the plug nozzle presses the disc in the water outlet joint. Several water passing gaps are respectively provided on the front and back surfaces of the disc, and the several water passing gaps are annularly distributed to form a vortex shape. A water passing hole is provided on the plug nozzle, and the spray pipe, the water passing gaps, the water passing hole, and the forming cavity are sequentially connected.

[0008] The ice-making evaporator includes a turntable bracket, a sealing seat, an ice-making mold fixing assembly, and an upper cover. The upper cover covers the turntable bracket, and an ice-making cavity is formed between the upper cover and the turntable bracket. The ice-making mold fixing assembly, the ice-making molds, and the refrigeration coil are arranged in the ice-making cavity. The ice-making mold fixing assembly is pressed between the upper cover and the turntable bracket. The sealing seat is fixed on the turntable bracket, and the ice-making molds are pressed between the ice-making mold fixing assembly and the sealing seat.

[0009] The ice-making evaporator further includes a motor, which is drivingly connected to the turntable bracket. An ice storage container is provided at the upper part of the inner tank, and the ice storage container is located below the ice-making evaporator. An opening is provided at the bottom of the forming cavity, and several covering planes corresponding to the ice-making molds are provided on the top of the sealing seat. When the sealing seat is in a pending position, the sealing seat covers the opening through the covering planes. When the motor drives the sealing seat to turn downward to the first position through the turntable bracket, the covering planes open the opening, the forming cavity is connected to the ice storage container through the opening, and the ice cubes in the forming cavity fall downward into the ice storage container through the opening.

[0010] Several through holes are provided at the top of the ice-making molds, and several groups of air vent holes corresponding to the ice-making molds are provided on the top of the upper cover. The forming cavity is connected to the air vent holes through the through holes. The ice-making cavity is filled with a first heat-insulating layer, and a foam injection port for injecting foam material into the ice-making cavity is provided on the top of the upper cover, and the foam injection port is connected to the ice-making cavity.

[0011] An inlet water chamber is formed between the inner container and the ice storage container. One end of the inlet water chamber is provided with an inlet hole, and the other end is provided with an outlet hole. The outlet end of the water discharge valve is connected to the inlet hole, and the outlet hole is connected to the inlet end of the water pump. A filter seat is arranged at a position of the inlet water chamber close to the outlet hole. A filter net assembly is installed on the filter seat. A filter chamber is formed between the filter seat and the filter net assembly. The filter chamber communicates with the outlet hole. The inlet water chamber communicates with the filter chamber through the filter net assembly. A ventilation hole communicating with the filter chamber is arranged at the top of the filter net assembly.

[0012] The filter seats are respectively located on both sides of the filter net assembly. The filter net assembly includes a filter net and a pressing plate. The inlet water chamber communicates with the filter chamber through the filter net. The pressing plate covers the top of the filter chamber. The ventilation hole is arranged on the pressing plate.

[0013] The filter seat is provided with an installation notch and a guiding rib. The filter net is installed on the installation notch. The guiding rib is located on one side of the installation notch. The guiding rib presses the filter net on the installation notch. A first guiding inclined surface is arranged on the guiding rib. When installing the filter net, it is inserted into the installation notch along the first guiding inclined surface. The filter seat is provided with a plugging post, and the pressing plate is provided with a plugging hole. The plugging post and the plugging hole are plugged with each other. A limiting rib is arranged on one side of the pressing plate, and the limiting rib abuts against the filter net.

[0014] The refrigeration system further includes a compressor, a condenser, a drying filter, a capillary tube, a solenoid valve and a liquid receiver. An inlet pipe is arranged on the refrigeration coil. A first inlet and a second inlet are arranged on the inlet pipe. The compressor, the condenser, the drying filter, the capillary tube and the first inlet are connected in sequence. The compressor, the condenser, the solenoid valve, the liquid receiver and the second inlet are connected in sequence.

[0015] The refrigeration system further includes a defrosting evaporator. An outlet pipe is arranged on the refrigeration coil. The outlet pipe, the defrosting evaporator and the compressor are connected in sequence. A water receiving tray is arranged below the defrosting evaporator.

[0016] The present invention provides a spray-type ice maker. By arranging a spray head assembly, a plurality of ice making molds and a refrigeration coil for refrigerant to pass through are arranged in the ice making evaporator. The water sprayed by the spray head assembly is poured into the forming cavity to form ice cubes in the forming cavity. Since the ice making molds have regular shapes, the ice cubes obtained are regular in shape, good-looking in appearance, and the size of the ice making molds is large, so that the size of the obtained ice cubes is large (for example, the diameter of bullet ice in the market is about 25 mm, and the ice cubes made by this spray-type ice maker can reach a diameter of about 50 mm). Moreover, since the ice cubes are large in size and regular in shape, the ice cubes melt slowly.

[0017] In addition, the ice making mold is a single part. The forming cavity is arranged in the ice making mold. The refrigeration coil is wound around the outer periphery of the ice making mold, which can greatly improve the heat exchange efficiency, thereby accelerating ice formation, shortening the ice formation time, and making the ice formation uniform. Description of the Drawings

[0018] Figure 1 This is a cross-sectional view of a spray-irrigation ice maker in an embodiment of the present invention.

[0019] Figure 2 This is a cross-sectional view of the spray-irrigation ice maker from another orientation in an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the overall structure of the spray-irrigation ice maker in an embodiment of the present invention.

[0021] Figure 4 This is a partial schematic diagram of the ice-making evaporator in an embodiment of the present invention.

[0022] Figure 5 This is a top view of the ice-making evaporator in an embodiment of the present invention.

[0023] Figure 6 This is an exploded schematic diagram of the ice-making evaporator in an embodiment of the present invention.

[0024] Figure 7 This is a front view of the ice-making evaporator when the sealing seat is in a pending position in an embodiment of the present invention.

[0025] Figure 8 This is a front view of the ice-making evaporator when the sealing seat rotates to the first position in an embodiment of the present invention.

[0026] Figure 9 This is an exploded schematic diagram of the nozzle assembly in an embodiment of the present invention.

[0027] Figure 10 This is a schematic diagram of the spray-irrigation principle of the spray-irrigation ice maker in an embodiment of the present invention.

[0028] Figure 11 This is a schematic diagram of the internal structure of the inner container in an embodiment of the present invention.

[0029] Figure 12 This is a schematic diagram of the overall structure of the pressing plate in an embodiment of the present invention.

[0030] Figure 13 This is a cross-sectional view of the inner container in an embodiment of the present invention.

[0031] Figures 14 - 18 This is a partial schematic diagram of the spray-irrigation ice maker from different orientations in an embodiment of the present invention.

[0032] Figure 19 This is a schematic diagram of the overall structure of the spray-irrigation ice maker from another orientation in an embodiment of the present invention.

[0033] Figure 20 This is a schematic diagram of the operating principle of the spray-irrigation ice maker in an embodiment of the present invention.

[0034] Figure 21 This is a schematic diagram of the water flow direction of the sprinkler ice maker in an embodiment of the present invention.

[0035] Figure 22 This is a schematic diagram of the overall structure of the ice mold in an embodiment of the present invention. Detailed implementation manners

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] See Figures 1 - 22 , this sprinkler ice maker is applied to households and includes a water tank 1, a water inlet device, a nozzle assembly 2 and a refrigeration system. The water tank 1 is connected to the nozzle assembly 2 through the water inlet device. The refrigeration system includes an ice-making evaporator 3. A plurality of ice molds 4 and a refrigeration coil 11 for refrigerant passage are arranged in the ice-making evaporator 3. The refrigeration coil 11 is wound around the outer periphery of the ice mold 4. The refrigeration coil 11 is wound around the side and top of the ice mold 4. The nozzle assembly 2 corresponds to the ice mold 4 one by one. The ice mold 4 covers the nozzle assembly 2. A forming cavity 5 is arranged in the ice mold 4. The nozzle assembly 2 is connected to the forming cavity 5. The water sprayed by the nozzle assembly 2 is poured into the forming cavity 5 to form ice cubes 6 in the forming cavity 5. The refrigeration coil 11 makes the temperature of the ice mold 4 very low. The water sprayed by the nozzle assembly 2 will turn into ice cubes 6 after contacting the ice mold 4. The shape of the ice cubes 6 is the same as the shape of the internal space of the ice mold 4. The material of the ice mold 4 is copper, aluminum or stainless steel, and the processing method can be selected as casting, stretching or laser welding after bending the sheet. The shape of the ice mold 4 is a cube, a cuboid, a circle or other special shapes (such as: egg shape, flower bud shape, etc.). The ice mold 4 is an ice tray with a large size, and the metal surface is easy to clean.

[0038] The water inlet device includes an inner tank 7, a water discharge valve 8, a water pump 9 and a spray pipe 10. The water inlet end of the water discharge valve 8 is connected to the water tank 1 through a water pipe, and the water outlet end of the water discharge valve 8 is connected to the inner tank 7 through a water pipe. The water inlet end of the water pump 9 is connected to the inner tank 7 through a water pipe, and the water outlet end of the water pump 9 is connected to the spray pipe 10. The nozzle assembly 2 is linearly arranged on the spray pipe 10. When the water discharge valve 8 is opened, the water in the water tank 1 flows into the water inlet cavity 26 of the inner tank 7, and the water at the bottom of the water tank 1 is discharged. The water discharge valve 8 and the inner tank 7 are located below the water tank 1. When the water pump 9 works, the water in the water inlet cavity 26 is pumped to the spray pipe 10, and then the water is sprayed into the forming cavity 5 through the nozzle assembly 2.

[0039] The nozzle assembly 2 includes a plug nozzle 12 and a disc 13. A number of water outlet connectors 14 are provided on the spray pipe 10. The plug nozzle 12 is connected to the water outlet connector 14, and the plug nozzle 12 presses the disc 13 tightly within the water outlet connector 14. A number of water passing notches 15 are respectively provided on the front and back sides of the disc 13, enabling the disc 13 to be installed correctly or reversely, and the functions of the water passing notches 15 on the front and back sides are the same. A water passing hole 16 is provided on the plug nozzle 12. The spray pipe 10, the water passing notches 15, the water passing hole 16, and the forming cavity 5 are connected in sequence. The water in the spray pipe 10 is sprayed into the forming cavity 5 through the water passing notches 15 and the water passing hole 16 in sequence; the number of water passing notches 15 is annularly distributed to form a vortex shape, enabling the water flow with a certain power to generate a centrifugal force towards the disc 13 through the spray pipe 10 to form a vortex shape, and then be ejected from the water passing hole 16 to present a fan-shaped water vapor bead, forming a spraying effect (as Figure 10 shown), with high ice-making efficiency and higher transparency.

[0040] An external thread 52 is provided on the outer ring of the plug nozzle 12, and an internal thread 53 is provided on the inner ring of the water outlet connector 14. The plug nozzle 12 and the water outlet connector 14 are connected through the cooperation of the external thread 52 and the internal thread 53; a hexagonal operation part 54 is provided on the top of the plug nozzle 12, and the operation part 54 can be rotated through a hexagonal socket, thereby rotating the plug nozzle 12 to thread-connect the plug nozzle 12 and the water outlet connector 14.

[0041] A number of protrusions 55 are respectively annularly provided on the front and back sides of the disc 13. The water passing notches 15 are formed between the protrusions 55 on the front side and the protrusions 55 on the back side of the disc 13, and the protrusions 55 are formed by stamping; the number of water passing notches 15 is at least 2, and the material of the disc 13 is metal or plastic.

[0042] The ice-making evaporator 3 includes a turntable support 17, a sealing seat 18, an ice-making mold fixing assembly, and an upper cover 19. The upper cover 19 covers the turntable support 17, and an ice-making cavity 21 is formed between the upper cover 19 and the turntable support 17. The ice-making mold fixing assembly, the ice-making mold 4, and the refrigeration coil 11 are arranged in the ice-making cavity 21. The ice-making mold fixing assembly is pressed between the upper cover 19 and the turntable support 17. The sealing seat 18 is fixed on the turntable support 17, and the ice-making mold 4 is pressed between the ice-making mold fixing assembly and the sealing seat 18.

[0043] The ice-making evaporator 3 further includes a motor 20. The motor 20 is drivingly connected to a turntable bracket 17. An ice storage container 22 is provided above the inner tank 7. The ice storage container 22 is located below the ice-making evaporator 3. An opening 75 is provided at the bottom of the forming cavity 5. The top of the sealing seat 18 is provided with a plurality of covering planes 74 corresponding to the ice-making molds 4. When the sealing seat 18 is at the undetermined position A, the sealing seat 18 covers the opening 75 through the covering planes 74, and the ice-making evaporator 3 is in a closed state. When the motor 20 drives the sealing seat 18 to turn downward to the first position B through the turntable bracket 17, the covering plane 74 opens the opening 75, and the ice-making evaporator 3 is in an open state. The forming cavity 5 communicates with the ice storage container 22 through the opening 75. The ice cubes 6 in the forming cavity 5 fall downward into the ice storage container 22 through the opening 75. Then, the motor 20 drives the sealing seat 18 to turn upward and reset to the undetermined position A through the turntable bracket 17. The way that the sealing seat 18 turns downward to open the opening 75 enables the refrigeration coil 11 to be wound around the outer periphery of the ice-making mold 4. Moreover, after the opening 75 is opened, the ice cubes 6 will fall downward due to gravity. Therefore, the ice cubes 6 will not remain in the forming cavity 5. Moreover, when the sealing seat 18 turns downward, it will avoid the ice cubes 6 and will not affect the falling of the ice cubes 6, enabling the ice-making evaporator 3 to smoothly defrost. In addition, the defrosting stroke space can be saved, and the traditional driven mechanism and ice guiding mechanism can be omitted, further saving space, thereby reducing the overall volume of the ice maker and simplifying the internal structure of the ice maker.

[0044] The ice-making mold fixing assembly includes a fixed base 56 and a fixed cover 57. The fixed base 56 is pressed between the upper cover 19 and the turntable bracket 17. The fixed cover 57 is fixed on the fixed base 56. The ice-making mold 4 is pressed between the fixed cover 57 and the sealing seat 18.

[0045] The ice-making evaporator 3 further includes a gear 58. The motor 20 is drivingly connected to the gear 58. Two sides of the turntable bracket 17 are respectively provided with movable grooves 59. One side of the movable groove 59 is provided with mating teeth 60 distributed in an arc shape. The motor 20 drives the gear 58 to rotate. The gear 58 meshes with the mating teeth 60 to drive the turntable bracket 17 to rotate. The gear 58 slides relatively on the movable groove 59.

[0046] A guiding seat 61 is provided below the ice-making evaporator 3. A second guiding inclined surface 62 is provided on the guiding seat 61. The ice cubes 6 fall into the ice storage container 22 along the second guiding inclined surface 62. The ice storage container 22 is an ice basket.

[0047] The sealing seat 18 is provided with an insertion hole 63 communicating with the forming cavity 5. The water outlet joint 14 is inserted into the insertion hole 63. The spray head assembly 2 is located in the insertion hole 63.

[0048] A plurality of through holes 23 are provided at the top of the ice-making mold 4, and a plurality of groups of air-permeable holes 24 corresponding to the ice-making mold 4 are provided at the top of the upper cover 19. The molding cavity 5 communicates with the air-permeable holes 24 through the through holes 23. When the machine enters the ice-removing state, when the ice cubes 6 slide down to the ice storage container 22, if there are no air-permeable holes 24, a negative pressure will be generated in the molding cavity 5 to suck the ice cubes 6, which is not conducive to ice removal. By providing the air-permeable holes 24, external air enters the molding cavity 5 through the air-permeable holes 24, so that no negative pressure is generated in the molding cavity 5, which is conducive to accelerating the ice-removing action; a first heat-insulating layer is filled in the ice-making cavity 21, and an injection port 25 for injecting foam material into the ice-making cavity 21 is provided at the top of the upper cover 19. The injection port 25 communicates with the ice-making cavity 21. The first heat-insulating layer keeps the inside of the ice-making evaporator 3 at a low temperature and is not affected by the external temperature, thereby improving the ice-making efficiency and reducing energy consumption; the first heat-insulating layer is formed by EPS injection molding or foam material foaming.

[0049] It further includes a housing 64. The water inlet device, the spray head assembly 2 and the refrigeration system are arranged in the housing 64. The water tank 1, the inner tank 7 and the ice storage container 22 are located on the front side of the housing 64, and the water tank 1 is located above the ice storage container 22; a second heat-insulating layer 65 is provided on the front side of the ice storage container 22, and a third heat-insulating layer is provided on the front side of the inner tank 7. The second heat-insulating layer 65 and the third heat-insulating layer are formed by EPS injection molding or foam material foaming.

[0050] An inlet water cavity 26 is formed between the inner tank 7 and the ice storage container 22. One end of the inlet water cavity 26 is provided with a water inlet hole 27, and the other end is provided with a water outlet hole 28. The water outlet end of the water discharge valve 8 is connected to the water inlet hole 27 through a water pipe, and the water outlet hole 28 is connected to the water inlet end of the water pump 9. A filter seat 29 is provided at a position of the inlet water cavity 26 close to the water outlet hole 28. A filter net assembly is installed on the filter seat 29. A filter cavity 30 is formed between the filter seat 29 and the filter net assembly. The filter cavity 30 communicates with the water outlet hole 28. The inlet water cavity 26 communicates with the filter cavity 30 through the filter net assembly. A ventilation hole 31 communicating with the filter cavity 30 is provided at the top of the filter net assembly. The filter net assembly can filter impurities in the water, making the ice cubes 6 produced cleaner and more hygienic; the ventilation hole 31 can prevent negative pressure from being generated inside the filter cavity 30 and causing the water pump 8 to pump air in vain; the filter net assemblies on the market adopt a completely immersed method, and its disadvantages are: when the working flow rate of the water pump is greater than the water inlet flow rate of the filter net assembly, the phenomenon of the water pump pumping air in vain and making abnormal noises will occur. The filter net assembly of this solution adopts a semi-immersed method, and a ventilation hole 31 is provided at the top of the filter net assembly, which can completely avoid the phenomenon of the water pump pumping air in vain and making abnormal noises.

[0051] The filter seat 29 is located on the left and right sides of the filter net assembly respectively. The filter net assembly includes a filter net 32 and a pressing plate 33. The inlet water cavity 26 communicates with the filter cavity 30 through the filter net 32. The pressing plate 33 covers the top of the filter cavity 30. The ventilation hole 31 is provided on the pressing plate 33. The pressing plate 33 is used to seal the filter cavity 30, so that water can only enter the filter cavity 30 through the filter net 32.

[0052] The filter seat 29 is provided with an installation notch 34 and a guiding rib 35. The filter net 32 is installed on the installation notch 34. The guiding rib 35 is located on one side of the installation notch 34. The guiding rib 35 presses the filter net 32 on the installation notch 34. The guiding rib 35 is provided with a first guiding inclined surface 36. When the filter net 32 is installed, it is inserted into the installation notch 34 along the first guiding inclined surface 36, which is convenient for the installation of the filter net 32. The installation notch 34 is used to limit the front-back movement of the filter net 32.

[0053] The filter seat 29 is provided with a plug post 37, and the pressing plate 33 is provided with a plug hole 38. The plug post 37 and the plug hole 38 are inserted into each other so that the pressing plate 33 is fixed on the filter seat 29. A limiting rib 39 is arranged on one side of the pressing plate 33. The limiting rib 39 abuts against the filter net 32, and the limiting rib 39 plays a guiding role in the installation of the pressing plate 33.

[0054] The refrigeration system further includes a compressor 40, a condenser 41, a dryer filter 42, a capillary tube 43, a solenoid valve 44 and a liquid receiver 45. An inlet pipe 46 is arranged on the refrigeration coil 11. The inlet pipe 46 is provided with a first inlet 47 and a second inlet 48. The compressor 40, the condenser 41, the dryer filter 42, the capillary tube 43 and the first inlet 47 are connected in sequence. The compressor 40, the condenser 41, the solenoid valve 44, the liquid receiver 45 and the second inlet 48 are connected in sequence. The high-pressure gas generated by the compressor 40 enters the condenser 41, and then forms a low-temperature refrigerant after releasing heat through the condenser 41. The low-temperature refrigerant enters the refrigeration coil 11 through the dryer filter 42 and the capillary tube 43 in sequence. This path is a conventional refrigeration path. The high-pressure gas generated by the compressor 40 enters the condenser 41, and then forms a low-temperature refrigerant after releasing heat through the condenser 41. The low-temperature refrigerant enters the refrigeration coil 11 through the solenoid valve 44 and the liquid receiver 45 in sequence. This path is a defrosting path and is used for defrosting the ice-making evaporator 3. This path makes the temperature of the ice-making mold 4 higher than that of the ice-making mold 4 in the refrigeration path, so that a little of the surface of the ice cube 6 melts, and the ice cube 6 automatically falls off, which is beneficial to defrosting. A first fan 66 is arranged on one side of the condenser 41, and a first air outlet 67 is arranged on one side of the housing. The first fan 66 discharges the heat generated by the condenser 41 to the outside through the first air outlet 67. Air inlets 68 are arranged on the other side and the rear side of the housing 64.

[0055] The refrigeration system further includes a defrost evaporator 49. An outlet pipe 50 is provided on the refrigeration coil 11. The outlet pipe 50, the defrost evaporator 49, and the compressor 40 are connected in sequence. A water receiving tray 51 is provided below the defrost evaporator 49. When the refrigerant passes through the defrost evaporator 49, it absorbs heat and then returns to the compressor 40 to form a cycle. When the defrost evaporator 49 operates, condensed water is generated on its surface and falls into the water receiving tray 51 for collection. A second fan 69 is provided at the rear side of the defrost evaporator 49, and a second air outlet 70 is provided at the rear side of the outer casing 64. The cold air blown out by the second fan 69 is discharged to the outside through the second air outlet 70. In the conventional refrigeration path, the refrigerant returns to the compressor 40 as a low-pressure liquid, and in the ice melting path, the refrigerant returns to the compressor 40 as a high-pressure gas.

[0056] The refrigeration coil 11 is in a flat sheet shape or circular, and the material can be selected from aluminum pipes or copper pipes. The refrigeration coil 11 is welded or fixed on the upper cover 19 using a pressing plate. A through hole 71 is provided at the rear side of the upper cover 19. The inlet pipe 46 and the outlet pipe 50 extend out of the ice making evaporator 3 through the through hole 71.

[0057] A drain port 72 is provided at the bottom of the inner tank 7. The drain port 72 communicates with the water inlet chamber 26 to drain the water in the water inlet chamber 26. The bottom of the water receiving tray 51 is connected to the drain port 72 through a drain pipe 73 to drain the water in the water receiving tray 51.

[0058] The above is the preferred solution of the present invention, which shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An irrigation-type ice maker, characterized in that: It includes a water tank (1), a water inlet device, a spray head assembly (2) and a refrigeration system. The water tank (1) is connected to the spray head assembly (2) through the water inlet device. The refrigeration system includes an ice-making evaporator (3). Inside the ice-making evaporator (3), there are several ice-making molds (4) and a refrigeration coil (11) for the refrigerant to pass through. The refrigeration coil (11) winds around the outer periphery of the ice-making mold (4). The spray head assembly (2) corresponds to the ice-making mold (4) one by one. The ice-making mold (4) covers the spray head assembly (2). Inside the ice-making mold (4), there is a forming cavity (5). The spray head assembly (2) is connected to the forming cavity (5). The water sprayed by the spray head assembly (2) is poured into the forming cavity (5) to form ice cubes (6) in the forming cavity (5).

2. The sprinkler type ice maker according to claim 1, characterized in that: The water inlet device includes an inner tank (7), a water discharge valve (8), a water pump (9) and a spray pipe (10). The water inlet end of the water discharge valve (8) is connected to the water tank (1), and the water outlet end of the water discharge valve (8) is connected to the inner tank (7). The water inlet end of the water pump (9) is connected to the inner tank (7), and the water outlet end of the water pump (9) is connected to the spray pipe (10). The spray head assembly (2) is linearly arranged on the spray pipe (10).

3. The sprinkler type ice maker according to claim 2, characterized in that: The spray head assembly (2) includes a plug nozzle (12) and a disc (13). There are several water outlet joints (14) arranged on the spray pipe (10). The plug nozzle (12) is connected to the water outlet joint (14), and the plug nozzle (12) presses the disc (13) tightly inside the water outlet joint (14). Several water passing gaps (15) are respectively arranged on the front and back sides of the disc (13). The several water passing gaps (15) are annularly distributed to form a vortex shape. There is a water passing hole (16) arranged on the plug nozzle (12). The spray pipe (10), the water passing gaps (15), the water passing hole (16) and the forming cavity (5) are connected in sequence.

4. The sprinkler type ice maker according to claim 2, wherein: The ice-making evaporator (3) includes a turntable bracket (17), a sealing seat (18), an ice-making mold fixing component and an upper cover (19). The upper cover (19) covers the turntable bracket (17). An ice-making cavity (21) is formed between the upper cover (19) and the turntable bracket (17). The ice-making mold fixing component, the ice-making mold (4) and the refrigeration coil (11) are arranged inside the ice-making cavity (21). The ice-making mold fixing component is pressed between the upper cover (19) and the turntable bracket (17). The sealing seat (18) is fixed on the turntable bracket (17). The ice-making mold (4) is pressed between the ice-making mold fixing component and the sealing seat (18).

5. The sprinkler type ice maker according to claim 4, characterized in that: The ice-making evaporator (3) further includes a motor (20). The motor (20) is drivingly connected to a turntable bracket (17). A ice storage container (22) is arranged at the upper part of the inner container (7). The ice storage container (22) is located below the ice-making evaporator (3). An opening (75) is provided at the bottom of the forming cavity (5). Several covering planes (74) corresponding to the ice-making mold (4) are provided at the top of the sealing seat (18). When the sealing seat (18) is at the undetermined position (A), the sealing seat (18) covers the opening (75) through the covering plane (74). When the motor (20) drives the sealing seat (18) to turn downward to the first position (B) through the turntable bracket (17), the covering plane (74) opens the opening (75), and the forming cavity (5) communicates with the ice storage container (22) through the opening (75). The ice cubes (6) in the forming cavity (5) fall downward into the ice storage container (22) through the opening (75).

6. The sprinkler ice maker according to claim 4, characterized in that: Several through holes (23) are provided at the top of the ice-making mold (4). Several groups of air-permeable holes (24) corresponding to the ice-making mold (4) are provided at the top of the upper cover (19). The forming cavity (5) communicates with the air-permeable holes (24) through the through holes (23). A first heat-insulating layer is filled in the ice-making cavity (21). An injection port (25) for injecting foaming material into the ice-making cavity (21) is provided at the top of the upper cover (19). The injection port (25) communicates with the ice-making cavity (21).

7. The sprinkler type ice maker according to claim 4, wherein: An inlet water cavity (26) is formed between the inner container (7) and the ice storage container (22). An inlet water hole (27) is provided at one end of the inlet water cavity (26), and an outlet water hole (28) is provided at the other end. The outlet end of the water discharge valve (8) is connected to the inlet water hole (27), and the inlet end of the water pump (9) is connected to the outlet water hole (28). A filter seat (29) is provided at a position of the inlet water cavity (26) close to the outlet water hole (28). A filter net assembly is installed on the filter seat (29). A filter cavity (30) is formed between the filter seat (29) and the filter net assembly. The filter cavity (30) communicates with the outlet water hole (28). The inlet water cavity (26) communicates with the filter cavity (30) through the filter net assembly. A ventilation hole (31) communicating with the filter cavity (30) is provided at the top of the filter net assembly.

8. The sprinkler type ice maker according to claim 7, wherein: The filter seats (29) are respectively located on both sides of the filter net assembly. The filter net assembly includes a filter net (32) and a pressing plate (33). The inlet water cavity (26) communicates with the filter cavity (30) through the filter net (32). The pressing plate (33) covers the top of the filter cavity (30). The ventilation hole (31) is provided on the pressing plate (33).

9. The sprinkler type ice maker according to claim 8, wherein: The filter seat (29) is provided with an installation notch (34) and a guiding rib (35). The filter net (32) is installed in the installation notch (34). The guiding rib (35) is located on one side of the installation notch (34). The guiding rib (35) presses the filter net (32) on the installation notch (34). A first guiding inclined surface (36) is provided on the guiding rib (35). When the filter net (32) is installed, it is inserted into the installation notch (34) along the first guiding inclined surface (36). The filter base (29) is provided with a plug post (37), the pressing plate (33) is provided with a plug hole (38), the plug post (37) and the plug hole (38) are plugged into each other, a limiting rib (39) is arranged on one side of the pressing plate (33), and the limiting rib (39) abuts against the filter net (32).

10. The sprinkler-type ice maker according to claim 1, characterized in that: The refrigeration system further includes a compressor (40), a condenser (41), a dryer filter (42), a capillary tube (43), a solenoid valve (44) and a liquid receiver (45). An inlet pipe (46) is arranged on the refrigeration coil (11), and a first inlet (47) and a second inlet (48) are arranged on the inlet pipe (46). The compressor (40), the condenser (41), the dryer filter (42), the capillary tube (43) and the first inlet (47) are connected in sequence, and the compressor (40), the condenser (41), the solenoid valve (44), the liquid receiver (45) and the second inlet (48) are connected in sequence; The refrigeration system further includes a defrost evaporator (49). An outlet pipe (50) is arranged on the refrigeration coil (11). The outlet pipe (50), the defrost evaporator (49) and the compressor (40) are connected in sequence. A water receiving tray (51) is arranged below the defrost evaporator (49).

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