An ice making evaporator of a fully enclosed refrigerant completely covering an ice mold single pass and a processing method thereof

Abstract

The application discloses a full-closed refrigerant completely covering ice mold single-channel ice-making evaporator and a processing method thereof. The ice-making evaporator comprises an ice-making box and a spraying pipe. The ice-making box is provided with refrigerant inlet and outlet pipes. The spraying pipe sprays liquid to the ice-making box. The ice-making box comprises a cover plate, a rear shell and an inner flow channel core arranged between the cover plate and the rear shell. The cover plate is provided with a plurality of ice molds. The inner flow channel core, the rear shell and the cover plate are combined to form a heat exchange cavity for refrigerant flow. The heat exchange cavity covers the outer surface of the ice mold. The application has the advantages and effects that the new mechanical structure has a large contact area between the evaporator and the ice mold and high ice-making efficiency.

Description

Technical Field

[0001] This invention relates to the field of ice-making equipment technology, and in particular to an ice-making evaporator with a fully enclosed refrigerant completely covering a single ice mold and its processing method. Background Technology

[0002] The evaporator of an ice maker is the core component that generates cold energy. It is responsible for allowing the refrigerant to absorb heat and causing water to freeze into ice.

[0003] A Chinese patent with publication number CN118687276B discloses an adjustable evaporator assembly for an ice maker, including an evaporator body disposed in the freezing chamber of the ice maker. The front of the evaporator body has square ice grids arranged in an array. Water is sprayed into the ice grids by a water pump, and the uncondensed water is collected and recirculated for spraying. The ice grids are single ice-making areas. The back of the evaporator body is provided with condenser tubes adapted to the ice-making areas.

[0004] However, the above-mentioned evaporator assembly has the following disadvantages: the condenser tube is located on the back of the evaporator body, the contact area with a single ice-making zone is small, and the ice-making efficiency of a single ice-making zone is low. Summary of the Invention

[0005] The purpose of this invention is to provide a fully enclosed ice-making evaporator in which the refrigerant completely covers a single ice mold, resulting in a large contact area between the refrigerant and the ice mold and high ice-making efficiency.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a fully enclosed ice-making evaporator that completely covers the ice mold with refrigerant, comprising an ice-making box and a spray pipe. The ice-making box is provided with a refrigerant inlet pipe and a refrigerant outlet pipe for refrigerant to flow in and out. The spray pipe is used to spray liquid onto the ice-making box. The ice-making box includes a cover plate, a rear shell, and an inner flow channel core disposed between the cover plate and the rear shell. A plurality of ice molds are disposed on the cover plate. The inner flow channel core, the rear shell, and the cover plate are closed to form a heat exchange cavity for refrigerant to flow. The heat exchange cavity covers the outer surface of the ice molds. The refrigerant inlet pipe and the refrigerant outlet pipe are both connected to the heat exchange cavity.

[0007] By adopting the above technical solution, when the ice maker is working, the refrigerant flows into the heat exchange chamber from the refrigerant inlet pipe, absorbs heat and cools down in the heat exchange chamber, and flows along the heat exchange chamber to the refrigerant outlet pipe. Since the heat exchange chamber covers the outer surface of the ice mold, the refrigerant can fully fill the inner flow channel core and cover the outer surface of the ice mold when the ice maker is working, increasing the contact area between the ice mold and the refrigerant, thereby enabling full heat exchange between the ice mold and the refrigerant and improving the refrigerant utilization efficiency.

[0008] A further configuration of the present invention is as follows: the inner flow channel core is provided with a first connecting port and a second connecting port, the refrigerant inlet pipe is connected to the heat exchange cavity through the first connecting port, and the refrigerant outlet pipe is connected to the heat exchange cavity through the second connecting port.

[0009] By adopting the above technical solution, the refrigerant flows into the ice maker through the refrigerant inlet pipe and into the heat exchange chamber through the first connecting port. After heat exchange and cooling in the heat exchange chamber, it flows out of the heat exchange chamber through the second connecting port, ensuring that the refrigerant can flow into or out of the heat exchange chamber smoothly.

[0010] A further configuration of the present invention is as follows: the inner flow channel core is provided with a plurality of inner flow channel holes, a flow gap is formed between the inner flow channel holes and the ice mold, a partition wall is formed between adjacent inner flow channel holes, and an outlet is provided on the partition wall. The outlet includes an upper outlet located near the rear shell; or, the outlet includes a lower outlet located near the cover plate; or, the upper outlet and the lower outlet are alternately located between adjacent inner flow channel holes.

[0011] By adopting the above technical solution, the inner flow channel holes are separated by partition walls, and adjacent inner flow channel holes are connected by flow ports. During ice making, the refrigerant flows into the inner flow channel holes, passes through several inner flow channel holes in sequence along the flow ports, and fills the flow gap between the inner flow channel holes and the ice mold, thereby increasing the contact area and allowing the refrigerant to fully contact the side wall of the cold mold, thus improving the heat exchange efficiency.

[0012] A further configuration of the present invention is that the partition wall includes a first partition portion and a second partition portion, wherein the first partition portion forms a lower flow port on the side near the cover plate, and the second partition portion forms an upper flow port on the side near the rear shell, so that the flow path of the refrigerant in the heat exchange cavity is staggered vertically.

[0013] By adopting the above technical solution, since the lower flow port is located on the side of the first partition near the cover plate and the upper flow port is located on the side of the second partition near the rear shell, the vertical distance between the lower and upper flow ports is increased, which forces the refrigerant to flow in an alternating manner, preventing heat exchange blind spots inside the mold, increasing the flow path of the refrigerant, and ensuring that the refrigerant can fully fill the flow gap and increase the contact area, so that the refrigerant can fully exchange heat with the outer wall of the ice mold, improve the refrigeration efficiency, and shorten the ice-making time.

[0014] A further feature of the present invention is that the ice mold has a cavity formed in the inner part, the end of the ice mold is provided with a positioning protrusion, and the rear shell is provided with a plurality of positioning holes, each of the positioning holes being positioned and engaged with the corresponding ice mold.

[0015] By adopting the above technical solution, the ice mold is positioned and fitted with the positioning hole of the rear shell through the positioning protrusion, which facilitates the positioning and installation of the ice mold. During the assembly of the ice box, the positioning hole of the rear shell can be used to directly observe whether the ice mold is assembled flat, ensuring the stability of the ice mold installation.

[0016] A further feature of the present invention is that each of the positioning protrusions is provided with an exhaust hole communicating with the mold cavity, the exhaust hole being used to expel air from the ice mold when water is sprayed into the mold cavity.

[0017] By adopting the above technical solution, the mold cavity is connected to the outside air of the ice box through the vent hole. When water is sprayed into the mold cavity of the ice mold from the spray pipe, the gas is discharged from the vent hole, which avoids the formation of air bubbles inside the ice block during the ice block forming process, improves the ice block forming quality, and enhances the appearance of the ice block.

[0018] A further feature of the present invention is that a lower ice chamber is fixedly connected below the ice maker, the lower ice chamber has an insertion hole, the spray pipe is positioned and engaged with the insertion hole, the spray pipe is inserted through and below the lower ice chamber, the insertion hole wall has an anti-rotation protrusion, the insertion end of the spray pipe has an anti-rotation groove, and the anti-rotation protrusion and the anti-rotation groove are engaged to prevent rotation.

[0019] By adopting the above technical solution, the spray pipe is inserted from one side of the lower ice chamber, so that the anti-rotation groove at the insertion end of the spray pipe is aligned with the anti-rotation protrusion of the insertion hole on the other side. After the spray pipe is assembled, the anti-rotation protrusion and the anti-rotation groove cooperate to prevent the inside of the spray pipe from rotating under the impact of water flow, thereby improving the stability of the spray pipe installation.

[0020] A further feature of the present invention is that: the side wall of the spray pipe is provided with a plurality of spray nozzles, the lower ice chamber is provided with a clearance groove corresponding to the spray nozzles, the spray nozzles are inclined relative to the vertical direction, and the spray nozzles spray liquid into the mold cavity of the ice mold.

[0021] By adopting the above technical solution, compared with the vertical spraying method, the spray coverage area is increased and the spray uniformity is improved when water is sprayed into the mold cavity due to the inclined setting of the spray nozzle.

[0022] A further configuration of the present invention is as follows: the ice molds are arranged in two rows along the length direction, the spray nozzles include a first spray nozzle and a second spray nozzle, the first spray nozzle faces one row of the ice mold array, the second spray nozzle faces the other row of the ice mold array, and the central axis of the first spray nozzle and the central axis of the second spray nozzle intersect at an acute angle, the angle of the acute angle being 30° to 60°.

[0023] By adopting the above technical solution, the arrangement of two rows of ice mold arrays can increase the number of ice molds in a limited space, improve the space utilization rate and single ice production capacity of the ice-making equipment, and enhance the overall production efficiency. Furthermore, due to the acute angle formed by the opening directions of the first and second spray nozzles, water is sprayed from the first and second spray nozzles into the corresponding row of ice molds, respectively. The spraying target is clear and the spraying is highly targeted. Moreover, only one spray pipe is needed to achieve synchronous spraying, reducing structural redundancy.

[0024] Another technical objective of this invention is achieved through the following technical solution: a processing method for an ice-making evaporator, comprising the following steps: S1. Component processing: S101. Several of the ice molds are formed by stretching aluminum plates, and positioning protrusions are formed at the ends by stretching, and vent holes are opened in the positioning protrusions. S102. A number of ice mold mounting holes are punched out on an aluminum plate to form the cover plate; S103. Hot-melt aluminum liquid is die-cast in a mold to form an inner flow channel core. The side wall of the inner flow channel core forms a first connecting port and a second connecting port, and an overflow port is formed on the partition wall of the inner flow channel core. S104. A piece of aluminum plate is stretched to form a back shell. Several positioning holes corresponding to the positioning protrusions are opened on the back shell. Two through holes corresponding to the first and second connecting ports are opened on the side wall of the back shell. S2. Ice maker assembly: S201, Welding of ice molds to cover plate: Align the mold openings of several ice molds with the ice mold mounting holes of the cover plate, and fix the ice molds to the ice mold mounting holes by laser welding; S202, Inserting the inner flow channel core into the rear shell: Insert the inner flow channel core formed in S103 into the rear shell, so that the first connecting port and the second connecting port correspond one-to-one with the two through holes on the side wall of the rear shell. S203, sealing the cavity: Place the cover plate on the inner flow channel core and press the inner flow channel core into the rear shell. Align the edge of the cover plate with the opening of the rear shell and fix it with laser welding. S204. Connector fixing: The aluminum refrigerant inlet pipe is fixed to the first connecting port of the rear shell by laser welding, and the aluminum refrigerant outlet pipe is fixed to the second connecting port of the rear shell by laser welding. S3, Injection Molded Partition: The ice box assembled in S2 is placed into the injection mold, and the partition is injection molded on the cover plate. The partition has screw holes. S4. Fixing the lower ice compartment: Fix the injection-molded lower ice compartment to the partition plate with screws; S5. Spray pipe insertion: Insert the spray pipe axially into the lower ice chamber so that the spray nozzles on the spray pipe correspond to the mold cavity.

[0025] By adopting the above technical solution, the ice mold, cover plate, back shell, refrigerant outlet pipe and refrigerant inlet pipe are made of aluminum. The equipment is lightweight, saving installation space and transportation costs. Aluminum has good heat transfer performance and fast cooling speed. The connection is made by laser welding. Compared with manual spray gun welding, laser welding has high quality, the parts are flat and firm, the heat-affected zone is small, the scrap rate and defect rate are low, and the overall aesthetics are improved.

[0026] In summary, the present invention has the following beneficial effects: 1. The heat exchange cavity is formed by the inner flow channel core, the rear shell, and the cover plate, and the heat exchange cavity covers the outer surface of the ice mold. This allows the refrigerant to make full contact with the ice mold during flow, increases the contact area between the refrigerant and the ice mold, and improves the heat exchange efficiency of the refrigerant.

[0027] 2. The inner flow channel core is equipped with alternating first and second partitions along the refrigerant flow direction. The first partition has a lower flow port and the second partition has an upper flow port. The lower and upper flow ports are arranged in a staggered manner in the fluid flow direction. This design forces the refrigerant to flow along the curved flow channel, increases the refrigerant flow path, and thus increases the contact area between the refrigerant and the ice mold. This allows for sufficient heat exchange between the refrigerant and the ice box, thereby improving the refrigerant utilization efficiency.

[0028] 3. The ice mold is designed with positioning protrusions and corresponding positioning holes on the back shell. Vent holes are also provided through the positioning protrusions. The mold cavity is connected to the outside air of the ice box through the vent holes. When water is sprayed into the mold cavity of the ice mold from the spray pipe, the gas is discharged from the vent holes, which prevents air bubbles from forming inside the ice during the ice forming process, improves the quality of ice forming, and enhances the appearance of the ice. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall invention.

[0030] Figure 2 This is an exploded view of the ice-making box in this invention.

[0031] Figure 3 This is a schematic diagram of the inner flow channel core structure in this invention.

[0032] Figure 4 This is a bottom view of the ice-making box in this invention.

[0033] Figure 5 yes Figure 4 A sectional view of section AA in the middle.

[0034] Figure 6 yes Figure 1 A magnified view of a portion of point B in the middle.

[0035] Figure 7This is a schematic diagram of the lower ice chamber structure in this invention.

[0036] Figure 8 This is a schematic diagram of the spray pipe structure in this invention.

[0037] Figure 9 This is a front view of the present invention.

[0038] Figure 10 yes Figure 9 A sectional view of section CC.

[0039] In the diagram: 1. Ice maker; 11. Refrigerant inlet pipe; 12. Refrigerant outlet pipe; 2. Lower ice compartment; 21. Insertion hole; 211. Anti-rotation protrusion; 22. Clearance groove; 23. Guide part; 3. Spray pipe; 31. Anti-rotation groove; 32. Spray nozzle; 321. First spray nozzle; 322. Second spray nozzle; 4. Cover plate; 41. Ice mold; 411. Positioning protrusion; 412. Vent hole; 413. Mold cavity; 5. Back shell; 51. Positioning hole; 6. Inner flow channel core; 61. Inner flow channel hole; 611. Flow gap; 62. Partition wall; 621. First partition part; 622. Second partition part; 63. Flow port; 631. Upper flow port; 632. Lower flow port; 64. First connecting port; 65. Second connecting port; 7. Heat exchange chamber; 8. Partition plate; 81. Screw hole. Detailed Implementation

[0040] The invention will now be further described with reference to the accompanying drawings.

[0041] A fully enclosed ice-making evaporator with refrigerant completely covering the ice mold 41 single-channel, such as Figures 1-5 As shown, the device includes an ice-making box 1, a lower ice chamber 2, and a spray pipe 3. The ice-making box 1 has a refrigerant inlet pipe 11 and a refrigerant outlet pipe 12 welded to its side for refrigerant to flow in and out. During ice making, the spray pipe 3 sprays water into the ice mold 41 of the ice-making box 1. Through refrigerant evaporation and heat absorption, ice cubes are formed within the ice mold 41. After the ice cubes are formed, they fall from the ice-making box 1 into the lower ice chamber 2. The ice-making box 1 includes a cover plate 4, a rear shell 5, and an inner flow channel core 6 located between the cover plate 4 and the rear shell 5. The cover plate 4 has several ice molds 41. The inner flow channel core 6, the rear shell 5, and the cover plate 4... The heat exchange cavity 7, which is formed by the cover, is used to allow the refrigerant to flow. The heat exchange cavity 7 covers the outer surface of the ice mold 41. When the ice maker is working, the refrigerant flows into the heat exchange cavity 7 from the refrigerant inlet pipe 11, absorbs heat and cools down in the heat exchange cavity 7, and flows along the heat exchange cavity 7 to the refrigerant outlet pipe 12. Since the heat exchange cavity 7 covers the outer surface of the ice mold 41, the refrigerant can fully fill the inner flow channel core 6 and cover the outer surface of the ice mold 41 when the ice maker is working, increasing the contact area between the ice mold 41 and the refrigerant, thereby enabling sufficient heat exchange between the ice mold 41 and the refrigerant and improving the refrigerant utilization efficiency.

[0042] like Figure 2 , Figure 3 and Figure 5 As shown, the inner flow channel core 6 is provided with a plurality of inner flow channel holes 61, and a flow gap 611 is formed between the inner flow channel holes 61 and the ice mold 41. The inner flow channel core 6 is provided with a first connecting port 64 and a second connecting port 65. The refrigerant inlet pipe 11 is connected to the heat exchange chamber 7 through the first connecting port 64, and the refrigerant outlet pipe 12 is connected to the heat exchange chamber 7 through the second connecting port 65. A partition wall 62 is formed between adjacent inner flow channel holes 61, and an overflow port 63 is opened on the partition wall 62. In this embodiment, the overflow port 63 includes an upper overflow port 631 and a lower overflow port 631. The refrigerant has a flow outlet 632. The partition wall 62 includes a first partition 621 and a second partition 622. The first partition 621 forms a lower flow outlet 632 on the side near the cover plate 4, and the second partition 622 forms an upper flow outlet 631 on the side near the rear shell 5. The upper flow outlet 631 and the lower flow outlet 632 are alternately arranged between adjacent inner flow channel holes 61, forcing the refrigerant to flow along the curved flow channel and increasing the refrigerant flow path. When the refrigerant flows in from the refrigerant inlet pipe 11, it flows in through the first connecting port 64. The first inner flow channel hole 61 is filled with the flow gap 611 between the inner flow channel hole 61 and the ice mold 41 along an alternating upper and lower flow path, thereby increasing the contact area between the refrigerant and the ice mold 41, allowing for sufficient heat exchange between the refrigerant and the ice mold 41, and improving the refrigerant utilization efficiency. In this embodiment, the ice mold 41 is arranged in two rows to increase the ice-making efficiency. The ice mold 41 at the end of the first row and the ice mold 41 at the end of the second row are connected through the lower flow port 632, so that the refrigerant flows along the alternating upper and lower flow path while the overall path... It is U-shaped; in other embodiments, it can also be configured such that the flow ports 63 are all composed of upper flow ports 631 and the corresponding partition walls 62 are all composed of second partitions 622, or the flow ports 63 are all composed of lower flow ports 632 and the corresponding partition walls 62 are all composed of first partitions 621. The refrigerant flows through the flow ports 63 in sequence under pressure and fills the flow gaps 611, which also increases the contact area between the refrigerant and the ice mold 41, so that the refrigerant and the ice mold 41 can exchange heat fully.

[0043] like Figure 2 , Figure 4 and Figure 5As shown, in this embodiment, the ice mold 41 has a positioning protrusion 411 at its end, and the rear shell 5 has a plurality of positioning holes 51. The positioning holes 51 correspond one-to-one with the ice mold 41. The ice mold 41 is positioned and engaged with the positioning holes 51 of the rear shell 5 through the positioning protrusion 411, which facilitates the positioning and installation of the ice mold 41. During the assembly of the ice box 1, the ice mold 41 can be directly observed through the positioning holes 51 of the rear shell 5 to ensure the stability of the installation of the ice mold 41. In addition, each positioning protrusion 411 has a through vent hole 412. The mold cavity 413 of the ice mold 41 is connected to the outside air of the ice box 1 through the vent hole 412. When water is sprayed into the mold cavity 413 of the ice mold 41 from the spray pipe 3, the gas is discharged from the vent hole 412, which avoids the formation of air bubbles inside the ice during the ice forming process, improves the quality of ice forming, and enhances the appearance of the ice.

[0044] like Figures 6-8 As shown, in this embodiment, the lower ice chamber 2 has an insertion hole 21, and the spray pipe 3 is positioned and fitted with the insertion hole 21. The bottom of the lower ice chamber 2 is provided with an inclined guide surface, so that the ice blocks can smoothly and orderly slide down the inclined surface after they are formed and fall off, avoiding the accumulation and jamming of ice blocks in the lower ice chamber 2. The inclined guide part 23 can reduce the impact of the falling ice blocks, reduce the probability of ice blocks breaking or cracking, and ensure the integrity and forming quality of the ice blocks. The spray pipe 3 is inserted through the lower ice chamber 2, which facilitates assembly and improves the ease of installation of the spray pipe 3. In addition, the insertion hole 21 on one side of the lower ice chamber 2 is provided with an anti-rotation protrusion 211. The spray pipe 3 is provided with an anti-rotation groove 31 at the insertion end. The spray pipe 3 is inserted from the insertion hole 21 on the other side. When the insertion end is close to the side wall of the lower ice chamber 2, the anti-rotation groove 31 is manually aligned with the anti-rotation protrusion 211 and inserted into the corresponding insertion hole 21. At this time, the anti-rotation protrusion 211 and the anti-rotation groove 31 cooperate to prevent the inside of the spray pipe 3 from rotating under the impact of water flow, which would affect the spray direction of the spray pipe 3 and improve the installation stability of the spray pipe 3. Moreover, when installing the spray pipe 3, the user only needs to align the anti-rotation groove 31 with the anti-rotation protrusion 211 without adjusting the installation angle of the spray pipe 3 separately, which improves the installation convenience of the spray pipe 3.

[0045] like Figures 8-10 As shown, the spray pipe 3 is provided with several spray nozzles 32. The spray nozzles 32 are inclined relative to the vertical direction and face into the mold cavity 413 of the ice mold 41. Compared with the vertical spraying method, the inclined arrangement of the spray nozzles 32 increases the spray coverage area and improves the spray uniformity when water is sprayed into the mold cavity 413 of the ice mold 41. The ice mold 41 array is arranged in two rows, which can increase the number of ice molds 41 in a limited space, improve the space utilization rate and single ice production capacity of the ice making equipment, and improve the overall production efficiency. The spray pipe 3 is provided with a first spray nozzle 321 and a second spray nozzle 322. The first spray nozzle 321 faces one row of the ice mold 41 array, and the second spray nozzle 322 faces the other row of the ice mold 41 array. Figure 10As shown, the angle α between the central axis of the first spray nozzle 321 and the central axis of the second spray nozzle 322 is an acute angle ranging from 30° to 60°. Water flows from the first spray nozzle 321 and the second spray nozzle 322 into the corresponding row of ice molds 41, respectively. The spraying target is clear and the spraying is highly targeted. Moreover, only one spray pipe 3 is needed to achieve synchronous spraying, reducing structural redundancy and the number of parts required for assembly. In addition, in this embodiment, the lower ice chamber 2 is provided with a clearance groove 22 corresponding to the spray nozzle 32 to prevent the lower ice chamber 2 from blocking the water flow sprayed from the spray pipe 3, and to avoid the water flow being blocked during the process of spraying from the spray pipe 3 into the ice mold 41, thus ensuring the normal operation of the equipment.

[0046] This invention also provides a method for processing an ice-making evaporator, used for processing and installing components such as the ice box 1 and the lower ice compartment 2, including the following steps: S1. Component processing: S101, several ice molds 41 are formed by stretching aluminum plates, and positioning protrusions 411 are formed at the ends by stretching, and vent holes 412 are opened in the positioning protrusions 411. S102. A number of ice mold mounting holes are punched out on an aluminum plate to form a cover plate 4; S103. Hot-melted aluminum liquid is die-cast in a mold to form an inner flow channel core 6. The sidewall of the inner flow channel core 6 forms a first connecting port 64 and a second connecting port 65. An overflow port 63 is formed on the partition wall 62 of the inner flow channel core 6. S104. A piece of aluminum plate is stretched to form a back shell 5. Several positioning holes 51 corresponding to the positioning protrusions 411 are opened on the back shell 5. Two through holes corresponding to the first connecting port 64 and the second connecting port 65 are opened on the side wall of the back shell 5. In this embodiment, the ice mold 41, cover plate 4, back shell 5, and inner flow channel core 6 are all made of aluminum, which has good thermal conductivity, improves ice-making efficiency, and has low density and light weight, reducing the overall burden of the equipment and making installation convenient. In addition, aluminum is easy to process. During the processing of the ice mold 41, different shapes of ice mold 41 can be designed according to product requirements, such as square ice blocks, pentagons, hexagons, octagons, cylinders, etc., to meet a variety of ice-making needs.

[0047] S2, Ice Container 1 Assembly: S201, Welding of ice mold 41 to cover plate 4: Align the mold openings of several ice molds 41 with the ice mold mounting holes of cover plate 4, and fix the ice molds 41 to the ice mold mounting holes by laser welding; S202, Inserting the inner flow channel core 6 into the rear shell 5: Insert the inner flow channel core 6 formed in S103 into the rear shell 5, so that the first connecting port 64 and the second connecting port 65 correspond one-to-one with the two through holes on the side wall of the rear shell 5. S203, sealing the cavity: Place the cover plate 4 on the inner flow channel core 6 and press the inner flow channel core 6 into the rear shell 5. The edge of the cover plate 4 is aligned with the shell opening of the rear shell 5 and fixed by laser welding. S204. Connector fixing: The aluminum refrigerant inlet pipe 11 is fixed to the first connecting port 64 of the rear shell 5 by laser welding, and the aluminum refrigerant outlet pipe 12 is fixed to the second connecting port 65 of the rear shell 5 by laser welding. By connecting components using laser welding, compared to methods such as flared or threaded connections, laser welding ensures the sealing of the interface and prevents refrigerant leakage.

[0048] S3, Injection-molded partition 8: The ice box 1 assembled in S2 is placed into the injection mold, and the partition 8 is injection-molded on the cover plate 4. The partition 8 has screw holes 81 formed on it. In this embodiment, the partition 8 is made of POM material, which has low water absorption and can maintain dimensional accuracy and performance stability in humid environments. It is not easily deformed and has a wide operating temperature range, making it suitable for most application scenarios of ice evaporators. S4. Fixing the lower ice compartment 2: Fix the injection-molded lower ice compartment 2 to the partition 8 with screws; The lower ice compartment 2 and the partition 8 are connected by screws, making installation convenient and assembly easy.

[0049] S5. Spray pipe 3 insertion: Insert the spray pipe 3 axially below the lower ice chamber 2, so that the spray nozzle 32 on the spray pipe 3 corresponds to the mold cavity 413.

[0050] The basic working principle of this invention is as follows: the cover plate 4, the rear shell 5, and the inner flow channel core 6 are closed to form a heat exchange cavity 7. Since a first partition 621 and a second partition 622 are provided between adjacent inner flow channel holes 61, the adjacent inner flow channel holes 61 are connected through the lower flow port 632 or the upper flow port 631. The lower flow port 632 and the upper flow port 631 are staggered in the direction of fluid flow, so that the heat exchange cavity 7 is formed into a tortuous flow channel. When the evaporator is working, the refrigerant flows into the heat exchange cavity 7 inside the ice box 1 from the refrigerant inlet pipe 11. The tortuous flow channel forces the refrigerant to flow along the tortuous flow channel and fill the flow gap 611 between the ice mold 41 and the inner flow channel hole 61. At the same time, the flow path of the refrigerant is increased, thereby increasing the contact area between the refrigerant and the ice mold 41, so that the refrigerant and the ice box 1 can exchange heat fully and improve the refrigerant utilization efficiency.

[0051] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included in the scope of this patent application.

Claims

1. A fully enclosed ice-making evaporator with refrigerant completely covering a single ice mold, comprising an ice-making box (1) and a spray pipe (3), wherein the ice-making box (1) is provided with a refrigerant inlet pipe (11) and a refrigerant outlet pipe (12) for refrigerant to flow in and out, and the spray pipe (3) is used to spray liquid onto the ice-making box (1), characterized in that: The ice box (1) includes a cover plate (4), a rear shell (5), and an inner flow channel core (6) disposed between the cover plate (4) and the rear shell (5). The cover plate (4) is provided with a plurality of ice molds (41). The inner flow channel core (6), the rear shell (5), and the cover plate (4) are closed to form a heat exchange cavity (7) for refrigerant flow. The heat exchange cavity (7) covers the outer surface of the ice molds (41). The refrigerant inlet pipe (11) and the refrigerant outlet pipe (12) are both connected to the heat exchange cavity (7).

2. The ice-making evaporator with fully enclosed refrigerant completely covering the ice mold single channel according to claim 1, characterized in that: The inner flow channel core (6) is provided with a first connecting port (64) and a second connecting port (65). The refrigerant inlet pipe (11) is connected to the heat exchange chamber (7) through the first connecting port (64), and the refrigerant outlet pipe (12) is connected to the heat exchange chamber (7) through the second connecting port (65).

3. The ice-making evaporator with a fully enclosed refrigerant completely covering the ice mold single channel according to claim 1, characterized in that: The inner flow channel core (6) is provided with a plurality of inner flow channel holes (61), and a flow gap (611) is formed between the inner flow channel holes (61) and the ice mold (41). A partition wall (62) is formed between adjacent inner flow channel holes (61), and an outlet (63) is provided on the partition wall (62). The outlet (63) includes an upper outlet (631) located near the rear shell (5); or, the outlet (63) includes a lower outlet (632) located near the cover plate (4); or, the upper outlet (631) and the lower outlet (632) are alternately provided between adjacent inner flow channel holes (61).

4. The ice-making evaporator with fully enclosed refrigerant completely covering the ice mold single channel according to claim 3, characterized in that: The partition wall (62) includes a first partition (621) and a second partition (622). The first partition (621) forms a lower flow port (632) on the side near the cover plate (4), and the second partition (622) forms an upper flow port (631) on the side near the rear shell (5), so that the flow path of the refrigerant in the heat exchange cavity (7) is staggered.

5. The ice-making evaporator with fully enclosed refrigerant completely covering the ice mold single channel according to claim 1, characterized in that: The ice mold (41) has a cavity (413) formed in the inner recess. The end of the ice mold (41) is provided with a positioning protrusion (411). The rear shell (5) is provided with a plurality of positioning holes (51). Each positioning hole (51) is positioned and engaged with the corresponding ice mold (41).

6. The ice-making evaporator with fully enclosed refrigerant completely covering the ice mold single channel according to claim 5, characterized in that: Each of the positioning protrusions (411) is provided with an exhaust hole (412) that communicates with the mold cavity (413). The exhaust hole (412) is used to discharge the air inside the ice mold (41) when water is sprayed into the mold cavity (413).

7. The ice-making evaporator with fully enclosed refrigerant completely covering the ice mold single channel according to claim 1, characterized in that: The ice box (1) is fixedly connected to a lower ice chamber (2). The lower ice chamber (2) has an insertion hole (21). The spray pipe (3) is positioned and fitted with the insertion hole (21). The spray pipe (3) is inserted through the lower ice chamber (2). The insertion hole (21) has an anti-rotation protrusion (211) on its wall. The insertion end of the spray pipe (3) has an anti-rotation groove (31) corresponding to it. The anti-rotation protrusion (211) and the anti-rotation groove (31) are anti-rotation fitted together.

8. The ice-making evaporator with fully enclosed refrigerant completely covering the ice mold single channel according to claim 1, characterized in that: The side wall of the spray pipe (3) is provided with a plurality of spray nozzles (32), and the lower ice chamber (2) is provided with a relief groove (22) corresponding to the spray nozzles (32). The spray nozzles (32) are inclined relative to the vertical direction, and the spray nozzles (32) spray liquid into the mold cavity (413) of the ice mold (41).

9. The ice-making evaporator with fully enclosed refrigerant completely covering the ice mold single channel according to claim 8, characterized in that: The ice molds (41) are arranged in two rows along the length direction. The spray nozzles (32) include a first spray nozzle (321) and a second spray nozzle (322). The first spray nozzle (321) faces one row of ice molds (41) and the second spray nozzle (322) faces the other row of ice molds (41). The central axis of the first spray nozzle (321) intersects the central axis of the second spray nozzle (322) at an acute angle, and the angle of the acute angle is in the range of 30° to 60°.

10. A method for processing the ice-making evaporator according to claims 1-9, characterized in that: Includes the following steps: S1. Component processing: S101. Several of the ice molds (41) are formed by stretching aluminum plates, and a positioning protrusion (411) is formed at the end by stretching, and an exhaust hole (412) is opened in the positioning protrusion (411). S102. A number of ice mold mounting holes are punched out on an aluminum plate to form the cover plate (4); S103. The hot-melted aluminum liquid is die-cast in the mold to form an inner flow channel core (6). The side wall of the inner flow channel core (6) forms a first connecting port (64) and a second connecting port (65). An overflow port (63) is formed on the partition wall (62) of the inner flow channel core (6). S104. A piece of aluminum plate is stretched to form a back shell (5). Several positioning holes (51) corresponding to the positioning protrusion (411) are opened on the back shell (5). Two through holes corresponding to the first connecting port (64) and the second connecting port (65) are opened on the side wall of the back shell (5). S2, Ice Container (1) Assembly: S201, Welding of ice mold (41) and cover plate (4): Align the mold openings of several ice molds (41) with the ice mold mounting holes of the cover plate (4), and fix the ice molds (41) to the ice mold mounting holes by laser welding; S202, Insert the inner flow channel core (6) into the rear shell (5): Insert the inner flow channel core (6) formed in S103 into the rear shell (5) so that the first connecting port (64) and the second connecting port (65) correspond one-to-one with the two through holes on the side wall of the rear shell (5); S203, sealing the cavity: place the cover plate (4) on the inner flow channel core (6) and press the inner flow channel core (6) into the rear shell (5). The edge of the cover plate (4) is aligned with the shell opening of the rear shell (5) and fixed by laser welding. S204, Connector fixing: The aluminum refrigerant inlet pipe (11) is fixed to the first connecting port (64) of the rear shell (5) by laser welding, and the aluminum refrigerant outlet pipe (12) is fixed to the second connecting port (65) of the rear shell (5) by laser welding. S3, Injection Molded Partition (8): The ice box (1) assembled in S2 is placed into the injection mold, and the partition (8) is injection molded on the cover plate (4) for the second time. The partition (8) has screw holes (81). S4. Fixing the lower ice compartment (2): Fix the injection-molded lower ice compartment (2) to the partition (8) with screws; S5. Spray pipe (3) insertion: Insert the spray pipe (3) axially below the lower ice chamber (2) so that the spray nozzle (32) on the spray pipe (3) corresponds to the mold cavity (413).

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