Sprinkler-type ice maker

Abstract

The utility model provides a kind of sprinkling irrigation type ice maker, including water tank, water inlet device, spray head assembly and refrigeration system, water tank is connected with spray head assembly by water inlet device, and refrigeration system includes ice-making evaporator, a plurality of ice-making moulds and the refrigeration coil for refrigerant passage are provided in ice-making evaporator, and refrigeration coil is around the outer periphery of ice-making mould, spray head assembly is one-to-one with ice-making mould, ice-making mould covers on spray head assembly, and forming cavity is provided in ice-making mould, and spray head assembly is connected with forming cavity.The utility model is provided with spray head assembly, by setting up a plurality of ice-making moulds and the refrigeration coil for refrigerant passage in ice-making evaporator, water sprayed by spray head assembly is irrigated into forming cavity, to form ice block in forming cavity, because ice-making mould has regular shape, so the ice block shape regularity is made, ice block appearance is good, and the size of ice-making mould is larger, so that the ice block size is larger, and because ice block size is large and regular shape, so ice block melts slowly.

Description

Technical Field

[0001] This utility model relates to the field of ice maker technology, and in particular to a spray-type ice maker. Background Technology

[0002] An ice maker is a device used to make ice cubes or crushed ice; they are commonly used in commercial establishments such as bars, restaurants, beverage shops, and supermarkets, as well as in refrigerators and freezers in homes; they are also essential refrigeration equipment for entertainment and relaxation in the hot summer; currently available on the market are bullet ice makers, spray ice makers, extrusion ice makers, flowing water ice makers, and ball ice makers; the ice cubes produced by these ice makers are irregular in appearance, small in size, and melt quickly;

[0003] To address the aforementioned issues, Chinese Patent Document No. CN220206116U, published on December 19, 2023, discloses an ice maker comprising a frame, an upper ice mold, a lower ice mold, a refrigeration unit, a water supply unit, and a drive unit. The upper and lower ice molds can be relatively movable together or separated via the drive unit. The lower mold is separated from and joined to the upper mold via a simple sliding lifting mechanism. This ice maker sprays water into the ice-making cavity formed by the upper and lower mold cavities through a nozzle. Due to the regular shape of the ice-making cavity, the resulting ice cubes are regularly shaped and relatively large, and melt slowly. However, this structure leads to evaporation... The pipes can only be wound around the upper ice mold, resulting in low heat exchange efficiency and slow ice formation in the lower mold cavity. In addition, the ice removal method of this ice maker is to move the lower ice mold downwards, thereby opening the ice mold cavity. Then, the driven mechanism drives the ice guiding mechanism to rotate and flip into the space between the upper and lower ice molds, located below the upper mold cavity. The ice guiding mechanism catches the ice blocks falling from the upper mold cavity, and the ice blocks fall into the ice basket along the ice guiding mechanism. However, when the ice mold cavity is full of ice, the ice blocks may remain in the lower mold cavity after the lower ice mold moves downwards, making it impossible to remove the ice. In addition, the setting of the driven mechanism and the ice guiding mechanism makes the structure of the ice maker more complex and occupies more space, resulting in a larger overall size of the ice maker.

[0004] Therefore, further improvements are necessary. Utility Model Content

[0005] The purpose of this invention is to provide a spray-type ice maker that is simple in structure, has good ice-making effect, is easy to use, has high ice-making efficiency, and is highly practical, so as to overcome the shortcomings of the prior art.

[0006] A spray-type ice maker designed for this purpose is characterized by comprising 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, which contains several ice-making molds and a refrigeration coil for refrigerant passage. The refrigeration coil is wrapped around the outer circumference of the ice-making molds. The nozzle assembly corresponds to each ice-making mold, and the ice-making molds are covered by the nozzle assembly. A forming cavity is provided inside the ice-making mold, and the nozzle assembly is connected to the forming cavity. Water sprayed from the nozzle assembly is poured into the forming cavity to form ice blocks within the forming cavity.

[0007] The water inlet device includes an inner tank, a drain valve, a water pump, and a spray pipe. The inlet end of the drain valve is connected to the water tank, and the outlet end of the drain valve is connected to the inner tank. The inlet end of the water pump is connected to the inner tank, and the outlet end of the water pump is connected to the spray pipe. The spray head assembly is linearly arranged on the spray pipe.

[0008] The nozzle assembly includes a stopcock nozzle and a disc. Several water outlet connectors are provided on the spray pipe. The stopcock nozzle is connected to the water outlet connectors, and the stopcock nozzle presses the disc tightly inside the water outlet connectors. Several water passage notches are provided on the front and back sides of the disc. The water passage notches are distributed in a ring and form a vortex. The stopcock nozzle is provided with a water passage hole. The spray pipe, water passage notches, water passage holes and forming cavity are connected in sequence.

[0009] The ice-making evaporator includes a turntable support, a sealing seat, an ice-making mold fixing assembly, and an upper cover. The upper cover is placed on the turntable support, and an ice-making cavity is formed between the upper cover and the turntable support. The ice-making mold fixing assembly, the ice-making mold, and the refrigeration coil are arranged inside the ice-making cavity. The ice-making mold fixing assembly is pressed between the upper cover and the turntable support. The sealing seat is fixed on the turntable support, and the ice-making mold is pressed between the ice-making mold fixing assembly and the sealing seat.

[0010] The ice-making evaporator also includes a motor, which is connected to a turntable support. An ice storage container is located on the upper part of the inner liner and below the ice-making evaporator. The bottom of the forming cavity has an opening, and the top of the sealing seat has several covering planes corresponding to the ice mold. When the sealing seat is in the undetermined position, it covers the opening through the covering planes. When the motor drives the sealing seat to rotate downward to the first position via the turntable support, the covering planes open the opening, and the forming cavity connects to the ice storage container through the opening. The ice blocks in the forming cavity fall downward into the ice storage container through the opening.

[0011] The top of the ice mold has several through holes, and the top of the upper cover has several sets of vent holes corresponding to the ice mold. The forming cavity is connected to the vent holes through the through holes. The ice-making cavity is filled with a first insulation layer. The top of the upper cover has a foam injection port for injecting foam material into the ice-making cavity, and the foam injection port is connected to the ice-making cavity.

[0012] A water inlet chamber is formed between the inner liner and the ice storage container. One end of the water inlet chamber is provided with a water inlet hole and the other end is provided with a water outlet hole. The water outlet end of the drain valve is connected to the water inlet hole, and the water outlet hole is connected to the water inlet end of the water pump. A filter seat is provided in the water inlet chamber near the water outlet hole. A filter screen assembly is installed on the filter seat. A filter chamber is formed between the filter seat and the filter screen assembly. The filter chamber is connected to the water outlet hole. The water inlet chamber is connected to the filter chamber through the filter screen assembly. A ventilation hole connected to the filter chamber is provided on the top of the filter screen assembly.

[0013] The filter seats are located on both sides of the filter screen assembly. The filter screen assembly includes a filter screen and a pressure plate. The water inlet chamber is connected to the filter chamber through the filter screen. The pressure plate covers the top of the filter chamber, and the air exchange hole is located on the pressure plate.

[0014] The filter base is provided with an installation slot and guide ribs. The filter screen is installed on the installation slot. The guide ribs are located on one side of the installation slot. The guide ribs press the filter screen onto the installation slot. The guide ribs are provided with a first guide slope. When installing the filter screen, it is inserted into the installation slot along the first guide slope.

[0015] The filter base is equipped with plug-in posts, and the pressure plate is equipped with plug-in holes. The plug-in posts and plug-in holes are plugged into each other. A limit rib is provided on one side of the pressure plate, and the limit rib abuts against the filter screen.

[0016] The refrigeration system also includes a compressor, condenser, dryer filter, capillary tube, solenoid valve and receiver. The refrigeration coil is equipped with an inlet pipe, which has a first inlet and a second inlet. The compressor, condenser, dryer filter, capillary tube and the first inlet are connected in sequence. The compressor, condenser, solenoid valve, receiver and the second inlet are also connected in sequence.

[0017] The refrigeration system also includes a defrosting evaporator. An outlet pipe is provided on the refrigeration coil. The outlet pipe, the defrosting evaporator, and the compressor are connected in sequence. A water collection tray is provided below the defrosting evaporator.

[0018] This invention provides a spray-type ice maker. By setting up a nozzle assembly, and by setting up several ice molds and a refrigeration coil for refrigerant to pass through in the ice evaporator, the water sprayed by the nozzle assembly is poured into the forming cavity to form ice blocks in the forming cavity. Because the ice molds have regular shapes, the resulting ice blocks are regular in shape and have an attractive appearance. Moreover, the ice molds are relatively large, resulting in larger ice blocks (for example, bullet ice on the market has a diameter of about 25mm, while the ice blocks produced by this spray-type ice maker can be about 50mm in diameter). Furthermore, because the ice blocks are large and have regular shapes, they melt slowly.

[0019] In addition, the ice mold is a single part with the forming cavity set inside it. The cooling coils are wrapped around the outer circumference of the ice mold, which can greatly improve the heat exchange efficiency, thereby accelerating freezing, shortening freezing time, and making the freezing uniform. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of a spray-type ice maker according to one embodiment of the present invention.

[0021] Figure 2 This is a cross-sectional view of a spray-type ice maker from another angle in one embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the overall structure of a spray-type ice maker in one embodiment of the present invention.

[0023] Figure 4 This is a partial structural diagram of an ice-making evaporator in one embodiment of the present invention.

[0024] Figure 5 This is a top view of an ice-making evaporator in one embodiment of the present invention.

[0025] Figure 6 This is an exploded view of the ice-making evaporator in one embodiment of the present invention.

[0026] Figure 7 This is a front view of the ice-making evaporator when the sealing seat is in the undetermined position in one embodiment of the present invention.

[0027] Figure 8 This is a front view of the ice-making evaporator when the sealing seat is rotated to the first position in one embodiment of the present invention.

[0028] Figure 9 This is an exploded view of the nozzle assembly in one embodiment of the present invention.

[0029] Figure 10 This is a schematic diagram of the spraying principle of a spray-type ice maker in one embodiment of the present invention.

[0030] Figure 11 This is a schematic diagram of the internal structure of the inner liner in one embodiment of the present invention.

[0031] Figure 12 This is a schematic diagram of the overall structure of the pressure plate in one embodiment of the present invention.

[0032] Figure 13 This is a cross-sectional view of the inner liner in one embodiment of the present invention.

[0033] Figures 14-18 This is a partial structural diagram of a spray-type ice maker in different orientations according to an embodiment of the present invention.

[0034] Figure 19 This is a schematic diagram of the overall structure of the spray-type ice maker from another angle in one embodiment of the present invention.

[0035] Figure 20 This is a schematic diagram illustrating the operating principle of a spray-type ice maker according to one embodiment of the present invention.

[0036] Figure 21 This is a schematic diagram of the water flow direction of a spray-type ice maker in one embodiment of the present invention.

[0037] Figure 22 This is a schematic diagram of the overall structure of an ice-making mold in one embodiment of the present invention. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0039] See Figures 1-22 This spray-type ice maker, intended for home use, 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 via the water inlet device. The refrigeration system includes an ice-making evaporator 3, which contains several ice molds 4 and a refrigeration coil 11 for refrigerant passage. The refrigeration coil 11 is wrapped around the outer circumference of the ice molds 4, covering their sides and top. The nozzle assembly 2 corresponds one-to-one with each ice mold 4, with the ice mold 4 covering the nozzle assembly 2. Each ice mold 4 has a forming cavity 5, which is connected to the nozzle assembly 2. Water sprayed from component 2 is poured into the molding cavity 5 to form ice cubes 6 within the molding cavity 5. The cooling coil 11 keeps the temperature of the ice mold 4 very low. Water sprayed from the nozzle assembly 2 turns into ice cubes 6 upon contact with 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 ice mold 4 is made of copper, aluminum, or stainless steel, and the processing method can be casting, stretching, or bending of sheet metal followed by laser welding. The shape of the ice mold 4 can be a cube, cuboid, circle, or other irregular shape (e.g., egg shape, flower bud shape, etc.). The ice mold 4 is an ice tray, which is large in size and the metal surface is easy to clean.

[0040] The water inlet device includes an inner tank 7, a drain valve 8, a water pump 9, and a spray pipe 10. The inlet end of the drain valve 8 is connected to the water tank 1 through a water pipe, and the outlet end of the drain valve 8 is connected to the inner tank 7 through a water pipe. The inlet end of the water pump 9 is connected to the inner tank 7 through a water pipe, and the outlet end of the water pump 9 is connected to the spray pipe 10 through a water pipe. The nozzle assembly 2 is linearly arranged on the spray pipe 10. When the drain valve 8 is opened, the water in the water tank 1 flows into the water inlet chamber 26 of the inner tank 7, and water is discharged from the bottom of the water tank 1. The drain valve 8 and the inner tank 7 are located below the water tank 1. When the water pump 9 is working, it draws the water in the water inlet chamber 26 to the spray pipe 10, and then sprays the water into the molding cavity 5 through the nozzle assembly 2.

[0041] The nozzle assembly 2 includes a stopcock nozzle 12 and a disc 13. The spray pipe 10 has several water outlet connectors 14. The stopcock nozzle 12 is connected to the water outlet connectors 14, and the stopcock nozzle 12 presses the disc 13 tightly within the water outlet connectors 14. Several water passage notches 15 are provided on the front and back sides of the disc 13, allowing for both upright and reverse installation. The water passage notches 15 on the front and back sides serve the same purpose. The stopcock nozzle 12 has water passage holes 16. The spray pipe 10, water passage notches 15, water passage holes 16, and forming cavity 5 are sequentially connected. Water in the spray pipe 10 is sprayed into the forming cavity 5 through the water passage notches 15 and water passage holes 16. The several water passage notches 15 are arranged in a ring, forming a vortex. This causes the water with a certain momentum to flow through the spray pipe 10 towards the disc 13, generating centrifugal force to form a vortex. The water then sprays out fan-shaped water droplets from the water passage holes 16, creating a spray effect (e.g., ...). Figure 10 As shown in the image, it has high ice-making efficiency and higher transparency.

[0042] The outer ring of the stopcock nozzle 12 is provided with an external thread 52, and the inner ring of the water outlet connector 14 is provided with an internal thread 53. The stopcock nozzle 12 and the water outlet connector 14 are connected by the engagement of the external thread 52 and the internal thread 53. The top of the stopcock nozzle 12 is provided with a hexagonal operating part 54. The operating part 54 can be rotated by rotating the hexagonal sleeve, thereby rotating the stopcock nozzle 12 so that the stopcock nozzle 12 and the water outlet connector 14 are threadedly connected.

[0043] The front and back of the disc 13 are respectively provided with a number of protrusions 55 in a ring. A water passage notch 15 is formed between the protrusions 55 on the front and the protrusions 55 on the back of the disc 13. The protrusions 55 are formed by stamping. There are at least two water passage notches 15. The disc 13 is made of metal or plastic.

[0044] 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.

[0045] The ice-making evaporator 3 also includes a motor 20, which is driven by a turntable support 17. An ice storage container 22 is located on the upper part of the inner liner 7, 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 mold 4 are provided on the top of the sealing seat 18. When the sealing seat 18 is in position A, it 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 downwards to the first position B via the turntable support 17, the covering planes 74 open the opening 75, and the ice-making evaporator 3 is in an open state. The forming cavity 5 is connected to the ice storage container 22 through the opening 75. Ice cube 6 falls into ice storage container 22 through opening 75. Then, motor 20 drives sealing seat 18 to rotate upward and reset to the waiting position A via turntable bracket 17. The way sealing seat 18 rotates downward to open opening 75 allows refrigeration coil 11 to fully wrap around the outer circumference of ice mold 4. After opening 75, ice cube 6 will fall downward due to gravity, so ice cube 6 will not remain in the forming cavity 5. Moreover, the downward rotation of sealing seat 18 will avoid ice cube 6 and will not affect the falling of ice cube 6, so that ice evaporator 3 can smoothly detach ice. In addition, it can save space for detaching ice stroke and eliminate the traditional driven mechanism and ice guiding mechanism, further saving space, thereby reducing the overall size of ice maker and simplifying the internal structure of ice maker.

[0046] The ice mold fixing assembly includes a fixing base 56 and a fixing cover 57. The fixing base 56 is pressed between the upper cover 19 and the turntable bracket 17, and the fixing cover 57 is fixed on the fixing base 56. The ice mold 4 is pressed between the fixing cover 57 and the sealing seat 18.

[0047] The ice evaporator 3 also includes a gear 58. The motor 20 drives the gear 58. Movable grooves 59 are provided on both sides of the turntable support 17. On one side of the movable groove 59, there are mating teeth 60 arranged in an arc shape. The motor 20 drives the gear 58 to rotate. The gear 58 and the mating teeth 60 mesh with each other to drive the turntable support 17 to rotate. The gear 58 slides on the movable groove 59.

[0048] Below the ice evaporator 3, there is a guide seat 61, and a second guide slope 62 is provided on the guide seat 61. Ice blocks 6 fall into the ice storage container 22 along the second guide slope 62. The ice storage container 22 is an ice basket.

[0049] The sealing seat 18 is provided with an insertion hole 63 that connects to the molding cavity 5. The water outlet connector 14 is inserted into the insertion hole 63, and the nozzle assembly 2 is located in the insertion hole 63.

[0050] The top of the ice mold 4 is provided with several through holes 23, and the top of the upper cover 19 is provided with several sets of vent holes 24 corresponding to the ice mold 4. The forming cavity 5 is connected to the vent holes 24 through the through holes 23. When the machine enters the de-icing state, if there are no vent holes 24, the ice block 6 will generate negative pressure in the forming cavity 5 when it slides into the ice storage container 22, which will not be conducive to de-icing. However, by providing vent holes 24, outside air enters the forming cavity 5 through the vent holes 24, so that the forming cavity 5 will not generate negative pressure, which will help to accelerate the de-icing action. The ice making cavity 21 is filled with a first insulation layer. The top of the upper cover 19 is provided with a foam injection port 25 for injecting foam material into the ice making cavity 21. The foam injection port 25 is connected to the ice making cavity 21. The first insulation layer keeps the inside of the ice evaporator 3 at a low temperature and will not be affected by the outside temperature, thereby improving the ice making efficiency and reducing energy consumption. The first insulation layer is formed by EPS injection molding or foaming of foam material.

[0051] It also includes an outer shell 64, a water inlet device, a nozzle assembly 2 and a refrigeration system, which are installed inside the outer shell 64. The water tank 1, the inner liner 7 and the ice storage container 22 are located on the front side of the outer shell 64, and the water tank 1 is located above the ice storage container 22. A second insulation layer 65 is provided on the front side of the ice storage container 22 and a third insulation layer is provided on the front side of the inner liner 7. The second insulation layer 65 and the third insulation layer are formed by EPS injection molding or foaming.

[0052] A water inlet chamber 26 is formed between the inner liner 7 and the ice storage container 22. One end of the water inlet chamber 26 has a water inlet hole 27, and the other end has a water outlet hole 28. The outlet end of the drain valve 8 is connected to the water inlet hole 27 via 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 located near the water outlet hole 28 in the water inlet chamber 26, and a filter screen assembly is installed on the filter seat 29. A filter chamber 30 is formed between the filter seat 29 and the filter screen assembly, and the filter chamber 30 is connected to the water outlet hole 28. The water inlet chamber 26 is connected to the filter chamber 30 through the filter screen assembly. The top is provided with a ventilation hole 31 that connects to the filter chamber 30. The filter assembly can filter impurities in the water, making the ice cubes 6 cleaner and more hygienic. The ventilation hole 31 can prevent negative pressure from being generated inside the filter chamber 30, which would cause the water pump 8 to run dry. The filter assembly on the market adopts a fully immersed method, which has the following drawbacks: when the water pump's working flow rate is greater than the water inlet flow rate of the filter assembly, the water pump will run dry and make abnormal noise. The filter assembly of this solution adopts a semi-immersed method, and the top of the filter assembly is provided with a ventilation hole 31, which can completely avoid the water pump running dry and making abnormal noise.

[0053] The filter bases 29 are located on the left and right sides of the filter screen assembly. The filter screen assembly includes a filter screen 32 and a pressure plate 33. The water inlet chamber 26 is connected to the filter chamber 30 through the filter screen 32. The pressure plate 33 covers the top of the filter chamber 30. The air vent 31 is provided on the pressure plate 33. The pressure plate 33 is used to seal the filter chamber 30, so that water can only enter the filter chamber 30 through the filter screen 32.

[0054] The filter base 29 is provided with an installation slot 34 and a guide rib 35. The filter screen 32 is installed on the installation slot 34. The guide rib 35 is located on one side of the installation slot 34. The guide rib 35 presses the filter screen 32 onto the installation slot 34. The guide rib 35 is provided with a first guide slope 36. When installing the filter screen 32, it is inserted into the installation slot 34 along the first guide slope 36, which facilitates the installation of the filter screen 32. The installation slot 34 is used to restrict the back-and-forth movement of the filter screen 32.

[0055] The filter base 29 is provided with a plug-in post 37, and the pressure plate 33 is provided with a plug-in hole 38. The plug-in post 37 and the plug-in hole 38 are plugged into each other to fix the pressure plate 33 on the filter base 29. A limiting rib 39 is provided on one side of the pressure plate 33. The limiting rib 39 abuts against the filter screen 32 and plays a guiding role in the installation of the pressure plate 33.

[0056] The refrigeration system also includes a compressor 40, a condenser 41, a dryer filter 42, a capillary tube 43, a solenoid valve 44, and a receiver 45. An inlet pipe 46 is provided on the refrigeration coil 11, with a first inlet 47 and a second inlet 48 on the inlet pipe 46. The compressor 40, condenser 41, dryer filter 42, capillary tube 43, and first inlet 47 are connected in sequence, as are the compressor 40, condenser 41, solenoid valve 44, receiver 45, and second inlet 48. The high-pressure gas generated by the compressor 40 enters the condenser 41, and then releases heat through the condenser 41 to form a low-temperature refrigerant. The low-temperature refrigerant passes through the dryer filter 42 and capillary tube 43 sequentially into the refrigeration coil 11. This is a conventional refrigeration path. The high-pressure gas generated by the compressor 40 enters the condenser 41, and then releases heat through the condenser 41 to form a low-temperature refrigerant. The low-temperature refrigerant enters the refrigeration coil 11 through the solenoid valve 44 and the liquid receiver 45 in sequence. This path is the de-icing path, which is used for de-icing the ice-making evaporator 3. This path makes the temperature of the ice mold 4 higher than that of the ice mold 4 in the refrigeration path, causing the surface of the ice block 6 to melt slightly, so that the ice block 6 will fall off automatically, which is conducive to de-icing. A first fan 66 is provided on one side of the condenser 41, and a first exhaust vent 67 is provided on one side of the outer casing. The first fan 66 exhausts the heat generated by the condenser 41 to the outside through the first exhaust vent 67. An air inlet 68 is provided on the other side and the rear side of the outer casing 64.

[0057] The refrigeration system also includes a defrosting evaporator 49, an outlet pipe 50 on the refrigeration coil 11, and the outlet pipe 50, defrosting evaporator 49, and compressor 40 connected in sequence. A water collection tray 51 is provided below the defrosting evaporator 49. When the refrigerant passes through the defrosting evaporator 49, it absorbs heat and then returns to the compressor 40, forming a cycle. When the defrosting evaporator 49 is working, condensate is generated on its surface, and the condensate falls into the water collection tray 51 for collection. A second fan 69 is provided behind the defrosting evaporator 49, and a second exhaust vent 70 is provided behind the outer casing 64. The cold air blown out by the second fan 69 is discharged to the outside through the second exhaust vent 70. In the conventional refrigeration path, the refrigerant returns to the compressor 40 as a low-pressure liquid, while in the defrosting path, the refrigerant returns to the compressor 40 as a high-pressure gas.

[0058] The refrigeration coil 11 is flat or round, and the material can be aluminum or copper. The refrigeration coil 11 is welded or fixed to the upper cover 19 using a pressure plate. A through hole 71 is provided on the rear side of the upper cover 19, through which the inlet pipe 46 and the outlet pipe 50 extend out of the ice evaporator 3.

[0059] The bottom of the inner liner 7 is provided with a drain outlet 72, which is connected to the water inlet chamber 26 and can drain the water in the water inlet chamber 26; the bottom of the water receiving tray 51 is connected to the drain outlet 72 through a drain pipe 73 and can drain the water in the water receiving tray 51.

[0060] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A spray-type ice maker, characterized in that: The system 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). The ice-making evaporator (3) is equipped with several ice molds (4) and a refrigeration coil (11) for refrigerant to pass through. The refrigeration coil (11) is wrapped around the outer periphery of the ice molds (4). The nozzle assembly (2) corresponds to the ice molds (4) one by one. The ice molds (4) are covered on the nozzle assembly (2). The ice molds (4) are equipped with a forming cavity (5). 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 blocks (6) in the forming cavity (5).

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

3. The spray-type ice maker according to claim 2, characterized in that: The nozzle assembly (2) includes a stopcock nozzle (12) and a disc (13). Several water outlet connectors (14) are provided on the spray pipe (10). The stopcock nozzle (12) is connected to the water outlet connector (14), and the stopcock nozzle (12) presses the disc (13) into the water outlet connector (14). Several water passage notches (15) are provided on the front and back sides of the disc (13). The several water passage notches (15) are distributed in a ring and form a vortex. A water passage hole (16) is provided on the stopcock nozzle (12). The spray pipe (10), water passage notches (15), water passage holes (16) and forming cavity (5) are connected in sequence.

4. The spray-type ice maker according to claim 2, characterized in that: 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).

5. The spray-type ice maker according to claim 4, characterized in that: The ice evaporator (3) also includes a motor (20), which is connected to the turntable support (17). An ice storage container (22) is provided on the upper part of the inner liner (7). The ice storage container (22) is located below the ice evaporator (3). An opening (75) is provided at the bottom of the forming cavity (5). Several covering planes (74) corresponding to the ice mold (4) are provided on the top of the sealing seat (18). When the sealing seat (18) is in the undetermined position (A), the sealing seat (18) covers the opening (75) through the covering planes (74). When the motor (20) drives the sealing seat (18) to flip down to the first position (B) through the turntable support (17), the covering planes (74) open the opening (75). The forming cavity (5) is connected to the ice storage container (22) through the opening (75). The ice block (6) in the forming cavity (5) falls down into the ice storage container (22) through the opening (75).

6. The spray-type ice maker according to claim 4, characterized in that: The top of the ice mold (4) is provided with several through holes (23), and the top of the cover (19) is provided with several sets of vent holes (24) corresponding to the ice mold (4). The molding cavity (5) is connected to the vent holes (24) through the through holes (23). The ice cavity (21) is filled with a first heat insulation layer. The top of the cover (19) is provided with a foam injection port (25) for injecting foam material into the ice cavity (21). The foam injection port (25) is connected to the ice cavity (21).

7. The spray-type ice maker according to claim 4, characterized in that: A water inlet chamber (26) is formed between the inner liner (7) and the ice storage container (22). One end of the water inlet chamber (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 drain valve (8) is connected to the water inlet hole (27), and the water outlet hole (28) is connected to the water inlet end of the water pump (9). A filter seat (29) is provided near the water outlet hole (28) in the water inlet chamber (26). A filter screen assembly is installed on the filter seat (29). A filter chamber (30) is formed between the filter seat (29) and the filter screen assembly. The filter chamber (30) is connected to the water outlet hole (28). The water inlet chamber (26) is connected to the filter chamber (30) through the filter screen assembly. A ventilation hole (31) is provided on the top of the filter screen assembly to connect to the filter chamber (30).

8. The spray-type ice maker according to claim 7, characterized in that: The filter base (29) is located on both sides of the filter screen assembly. The filter screen assembly includes a filter screen (32) and a pressure plate (33). The water inlet chamber (26) is connected to the filter chamber (30) through the filter screen (32). The pressure plate (33) covers the top of the filter chamber (30). The air vent (31) is set on the pressure plate (33).

9. The spray-type ice maker according to claim 8, characterized in that: The filter base (29) is provided with an installation slot (34) and a guide rib (35). The filter screen (32) is installed on the installation slot (34). The guide rib (35) is located on one side of the installation slot (34). The guide rib (35) presses the filter screen (32) onto the installation slot (34). The guide rib (35) is provided with a first guide slope (36). When the filter screen (32) is installed, it is inserted into the installation slot (34) along the first guide slope (36). The filter base (29) is provided with a plug-in post (37), and the pressure plate (33) is provided with a plug-in hole (38). The plug-in post (37) and the plug-in hole (38) are plugged into each other. A limit rib (39) is provided on one side of the pressure plate (33), and the limit rib (39) abuts against the filter screen (32).

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

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