Granular square ice maker and preparation method thereof

Abstract

The invention discloses a granular square ice maker and an ice making method thereof. The granular square ice maker comprises an upper cover assembly, a front housing, a rear shell and a base plate, and a compressor and a condenser are mounted on the lower side of the rear shell; an ice-making working box which is of a stepped cavity structure shaped like a Chinese character'chang 'is mounted in a containing cavity formed after the front housing and the rear housing are in butt joint; a spraying ice-making device located in a first stepped cavity formed in the upper part of the rear side of the stepped cavity shaped like the Chinese character'chang 'is arranged in the ice-making working box; a first water tank groove is formed in the bottom side of the first stepped cavity, and a first water pump is installed on the bottom side of the first water tank groove. A second stepped cavity is formed in the cavity in the front side of the ice-making working box, a second water tank groove is formed in the bottom of the second stepped cavity, and a second water pump is arranged on the outer side of the bottom of the second stepped cavity; the upper space of the second stepped cavity is also sleeved with an ice basket; the small first water tank groove is additionally arranged, so that water participating in ice making circulation is less, the ice making time is shortened, the evaporation efficiency and the ice block freezing speed are improved, and the ice making and discharging device is used for rapidly making ice and discharging ice.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household ice makers, in particular to a granular square ice maker and a preparation method thereof. BACKGROUND

[0002] An ice maker is a refrigeration device that generates ice by cooling water through an evaporator assembly and a refrigeration system of a compressor; currently, most ice makers on the market that produce square ice use a flowing water type or a spraying type. The square ice produced by the flowing water type is often stuck together in a row, which needs to be manually separated. After being separated, the edges have an acute angle, which poses a certain safety hazard when drinking or chewing. The existing spraying type ice maker is not suitable for household use due to its complex structure, large size, and high cost, and is mostly used for commercial machines. However, because the ice produced by the spraying type ice maker is transparent and hard, it is the best partner for wine or beverages, so there is an urgent need to provide a small spraying type ice maker suitable for household use.

[0003] In the existing household ice maker, such as the small spraying type ice maker suitable for household use provided in patent publication "CN217464992U", the ice is produced by spraying, and water is continuously sprayed upward on the evaporator by a water pump. However, the ice storage uses a pull-out type ice basket, and the front lacks a thermal insulation layer, so the ice blocks are easy to melt. Moreover, the entire machine has only one water tank, and a large amount of water participates in the circulation, causing the pre-cooling time to be prolonged, the ice-making cycle to be long, and the user to need a long waiting time when using ice blocks, which cannot quickly and effectively meet the user's needs. Furthermore, after long-term use, the spray head or pipe may be clogged by scale and impurities, and the spraying mechanism is not convenient to disassemble and clean.

[0004] Therefore, there is an urgent need to improve the internal structure of the existing ice maker to improve its ice-making efficiency and ice-making quality. SUMMARY

[0005] In view of the problems of the existing ice maker, such as long ice-making cycle, inconvenience for disassembly and cleaning, and poor thermal insulation effect, the present application provides a granular square ice maker and an ice-making method thereof. By increasing a small first water tank slot, the amount of water participating in the ice-making circulation is reduced, the ice-making time is shortened, the evaporation efficiency is improved, the ice block freezing speed is improved, the ice-making efficiency and ice block quality are improved, and the machine is used for fast ice-making and ice output, and has a small size and is suitable for household use.

[0006] The technical solution adopted by the present application to solve its technical problems is as follows: A granular square ice maker for fast ice-making and ice output, comprising an upper cover assembly, a front cover, a rear shell, and a base plate, wherein the front cover and the rear shell are connected front to back, and the bottom sides of the two are installed on the base plate, and the upper cover assembly is fixedly capped on the top sides of the connected front cover and rear shell. An ice-making working box with a top sealed by the upper cover assembly and having a "factory" - shaped stepped cavity structure is installed in the accommodation cavity after the front cover housing is docked with the rear housing; A spray ice-making device is provided in the ice-making working box, which is located in the upper part of the rear side of the "factory" - shaped stepped cavity and forms a refrigeration system through connection with a refrigerant pipeline; A first water tank groove for supplying ice-making water to the spray ice-making device and receiving the cold water falling from the spray ice-making device is formed at the bottom side of the first stepped cavity. A first water pump for pumping the ice water stored at the bottom of the first water tank groove to the spray ice-making device through a pipeline for ice-making by spraying is installed at the bottom side of the first water tank groove; In the front cavity of the ice-making working box, a second stepped cavity is provided in front of the "factory" - shaped stepped cavity and has a stepped drop from the first stepped cavity. A second water tank groove for adding raw water for ice-making from the outside is formed at the bottom of the second stepped cavity. A second water pump connected to the bottom of the second water tank groove and pumping water to the first water tank groove through a pipeline is also provided on the outer side wall at the bottom of the second stepped cavity; An ice basket for receiving the ice cubes that the spray ice-making device automatically drains from the first stepped cavity to the second stepped cavity by gravity is also sleeved in the upper space of the second stepped cavity.

[0007] Preferably, a compressor and a condenser are installed at the lower side of the rear housing, behind the base plate and arranged side by side. A fan for air-cooling the condenser in the inner cavity by directly blowing air to the outer side wall of the rear housing is installed beside the condenser. A control box is installed on the rear wall side of the rear housing, above the compressor and the condenser; An ice-making working box with a top sealed by the upper cover assembly is installed in the inner cavity beside the compressor and the condenser in the accommodation cavity after the front cover housing is docked with the rear housing; A flip cover for facilitating the opening of the second stepped cavity, taking ice from the ice basket and adding raw water to the second water tank groove is provided on the upper cover assembly corresponding to the upper side of the ice basket.

[0008] Preferably, a heat-insulating layer for heat-insulating the inside of the box is integrally wrapped on the outer wall of the ice-making working box and is located in the accommodation cavity after the front cover housing is docked with the rear housing;

[0009] Preferably, the spray ice-making device includes a spray evaporator for ice-making, a spray pipe and an ice block water filtering grille. The spray pipe is installed horizontally from left to right in the first stepped cavity and is connected to the first water pump through a pipeline. A plurality of sector nozzles corresponding to each row of ice-making grids on the lower side of the spray evaporator are installed on the spray pipe; The ice block filter water grid is arranged relative to the ice making grid on the lower side of the spray evaporator and is obliquely installed on the upper side of the spray pipe, and forms an equal gap grid structure that facilitates the spray water of the fan-shaped nozzle to pass through and the ice blocks in the ice making grid to fall along the inclined surface and simultaneously filter out the ice melting water. The lower side of the spray evaporator is further rotationally connected with a plurality of coaxial and parallel arranged ice block sliding out sides on the ice block filter water grid, which are automatically arranged by gravity and are surrounded by the upper side inner wall of the first stepped cavity to form a closed space that prevents the spray water of the fan-shaped nozzle from overflowing and facilitates the ice blocks on the ice block filter water grid to directly slide into the ice curtain swing arm plate in the second stepped cavity after being pushed and deflected.

[0010] Preferably, the spray evaporator comprises an evaporative copper pipe, an ice tray base, and a plurality of array distributed ice making grids, and the evaporative copper pipe is in communication with a refrigeration system for ice making. The ice making grid is arranged on the lower end surface of the ice tray base and is integrally formed with the ice tray base by aluminum alloy die casting. The evaporative copper pipe is sequentially bent relative to each ice block forming cavity in the ice making grid to form one or two rows of curved channels that are in direct heat exchange with each ice block forming cavity in the ice making grid and are sequentially and circularly connected. The ice tray base is integrally die cast with the ice making grid along the extension direction of the evaporative copper pipe and embeds the evaporative copper pipe in the inner cavity of each ice making grid.

[0011] Preferably, the inner cavity bottom of each ice block forming cavity in the ice making grid is further provided with a negative pressure demolding hole for rapid demolding of the ice blocks in the ice making grid and preventing negative pressure adsorption on the inner cavity bottom.

[0012] Preferably, the corresponding lower side of the ice making grid in the integrally formed ice tray base and ice making grid is further provided with a partition cover that is integrally formed of silica gel or plastic material for heat conduction insulation and avoids the ice blocks to be connected due to the direct contact of the spray water with the ice making grid and the freezing of the ice making grid.

[0013] Preferably, the outer side of the ice tray base is further provided with a rear shell seat that is integrally formed of silica gel or plastic material for heat conduction insulation and is in abutment with the partition cover to form a closed cavity for wrapping the entire ice tray base and ice making grid refrigeration source to prevent the energy of the refrigeration source from dissipating.

[0014] Preferably, the partition cover is clamped on the lower side of the ice making grid, and the ice outlet openings in the middle part of the partition cover are further locked and fixed on the ice making grid by a plurality of plastic screws.

[0015] The ice-making method of the above-mentioned particle square ice maker comprises the following steps: S1, starting, judging the water level of the second water tank groove in the second stepped cavity; S2, the water level in the second water tank groove meets the set requirement, the second water pump is started, and water is pumped into the first water tank groove in the first stepped cavity; S3, after the first water tank groove is filled with the required ice-making water, the first water pump is started, and water is pumped to the spray pipe in the spray ice-making device through the pipeline; S4, at the same time, the refrigeration system formed by connecting the compressor and the condenser through the refrigerant pipeline is started to work; S5, each fan-shaped nozzle on the spray pipe continuously sprays water into each ice-making grid of the spray ice-making device under the continuous water pumping of the first water pump, until a complete ice block is formed; S6, after each ice-making grid completes ice-making, the refrigeration system enters the ice-removing working mode, the ice block in the ice-making grid falls down, is guided along the inclined surface of the equidistant grid structure, and enters the ice basket in the second stepped cavity; S7, whether the ice block stored in the ice basket is full is judged, and when it is not full, the steps S2 to S6 are repeatedly cycled until the ice block in the ice basket is full; S8, after the ice block in the ice basket is full, an ice-full prompt is issued, and the machine is stopped at the same time.

[0016] Further, step S5 further comprises: When the ice-making grid issues a water shortage alarm in the ice-making process, the second water pump is started again to pump the water stored in the second water tank groove into the first water tank groove until the first water tank groove is filled with the required ice-making water; When the ice-making grid issues a water shortage alarm in the ice-making process, the second water tank groove and the first water tank groove simultaneously appear water shortage, the machine stops working and issues a water shortage prompt, and water is manually added to the second water tank groove.

[0017] Further, step S2 further comprises: An NTC temperature sensor for detecting water temperature is arranged in the first water tank groove, and the system prolongs or shortens the ice-making time according to the water temperature detected by the NTC temperature sensor, appropriately prolongs the ice-making time when the water temperature is high, and shortens the ice-making time when the water temperature is low.

[0018] The beneficial effects of the present application are: The existing ice maker adopts a pull-out type ice storage basket, and the front part lacks a thermal insulation layer, and ice blocks are easy to melt, and the existing ice maker has only one water tank, and more water participates in the circulation, which causes the pre-cooling time to be prolonged, greatly increases the ice making cycle, is not convenient for quick ice output, and often requires the user to wait for a long time, and cannot effectively meet the user's demand; moreover, after long-term use, the nozzle or pipeline may be blocked by scale and impurities, and is not convenient to disassemble and clean; in the present application, the spray ice making device is installed in the first stepped cavity formed on the upper part of the rear side of the "factory" shaped stepped cavity in the ice making work tank, a first water tank groove is arranged on the bottom side of the first stepped cavity, and a first water pump for pumping water to the spray ice making device is installed on the bottom side of the first water tank groove; and a second stepped cavity is formed on the front side of the "factory" shaped stepped cavity in the ice making work tank, and there is a stepped difference between the first stepped cavity and the second stepped cavity, a second water tank groove is arranged on the bottom of the second stepped cavity, and a second water pump for pumping water to the first water tank groove is arranged on the outside of the bottom of the second stepped cavity; that is, by increasing a small first water tank groove, the amount of water participating in the ice making cycle is less, the ice making time is shortened, the evaporation efficiency and ice freezing speed are improved, quick ice making and ice output are realized, the user's long waiting time is avoided, and the user's quick ice demand can be effectively met.

[0019] Moreover, the production process of the spray evaporator adopts aluminum alloy die-casting copper pipes, and the evaporation copper pipes, the aluminum alloy ice tray base and the ice making grid are integrally formed by die-casting, which effectively improves the contact area of the evaporation copper pipes and the ice making grid, improves the heat transfer efficiency of the evaporator, simplifies the processing technology of the evaporator and reduces the production cost; the integrally formed spray evaporator can also effectively prevent the deformation of the ice making grid and effectively ensure that each ice block made in each grid is completely consistent. Moreover, the integrally die-cast spray evaporator can realize 100% refrigeration and heat transfer of the evaporation copper pipes, effectively improve the heat transfer efficiency of the evaporator, and cooperate with the integrally formed separation cover and rear shell base made of silica gel or plastic material which can insulate heat conduction, to form a closed cavity which can wrap the entire ice tray base and ice making grid refrigeration source to prevent the energy of the refrigeration source from dissipating, thereby effectively improving the ice making efficiency of the evaporator. Moreover, the separation cover installed on the outer side of the ice making grid can also avoid the direct contact of the ice making water flow with the ice making grid, and the ice making grid can also effectively improve the quality of the ice output.

[0020] Meanwhile, the first water pump and the second water pump are both installed outside the ice-making work tank, compared with the water pump being soaked in the water tank in the prior art, the first water pump and the second water pump can be effectively simplified in circuit protection, the reliability and safety level in the use process of the water pump are improved, and the service life of the water pump is effectively prolonged. The heat preservation layer wrapped outside the whole outer wall of the ice-making work tank and the ice curtain swing arm plate rotatably connected to the ice block sliding side and arranged in parallel coaxially and automatically lowered to cover the whole side outlet by the gravity can not only be used for heat preservation in the closed space on the upper side of the first stepped cavity for ice-making, prevent the loss of cold quantity in the ice-making work tank, prevent the melting and temperature change of ice water in the storage cavity during the ice block storage process, and can prevent foreign matters outside the ice-making work tank from entering the cavity, and improve the cleanliness level during the ice-making process.

[0021] The application will be further described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the schematic diagram of the explosion structure of the application; Figure 2 is the schematic diagram of the three-dimensional structure of the application; Figure 3 is the schematic diagram of the three-dimensional structure of the application after the ice-taking cover is opened; Figure 4 is the schematic diagram of the cross-sectional structure of the application; Figure 5 is the schematic diagram of the rear view three-dimensional structure of the application after the rear shell is removed; Figure 6 is the schematic diagram of the side view structure of the application after the rear shell is removed; Figure 7 is the schematic diagram of the bottom view structure of the ice-making work tank and adjacent components of the application; Figure 8 is the schematic diagram of the cross-sectional structure of the ice-making work tank, the heat preservation layer and adjacent components of the application; Figure 9 is the schematic diagram of the ice-out state structure of the application when the ice-taking cover is opened; Figure 10 is the schematic diagram of the fixed connection structure of the ice curtain swing arm plate of the application; Figure 11 is the schematic diagram of the three-dimensional structure of the application when the ice-taking cover is opened and the ice basket is removed; Figure 12 is the schematic diagram of the local cross-sectional enlarged structure of the spraying pipe and the fan-shaped nozzle of the application; Figure 13 is the schematic diagram of the explosion structure of the spraying ice-making device of the application; Figure 14 is the control flow chart of the ice-making method of the application. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present application.

[0024] In the description of the present application, the meaning of one or more is one or more, the meaning of multiple is two or more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, within, etc. are understood as including the number. If the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0025] In addition, in the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above words in the present application can be reasonably determined in combination with the specific content of the technical solutions.

[0026] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those of ordinary skill in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0027] A granular cube ice maker, such as Figures 1 to 7As shown, for fast ice making and ice, including front cover 1, upper cover assembly 2, rear shell 3 and base plate 4, front cover 1 and rear shell 3 after the front and rear interface, the bottom side of the two receiving installation on the base plate 4, upper cover assembly 2 cover fixed to the top side of the interface after the front cover 1 and rear shell 3; installed in the rear shell 3 bottom side is located in the rear side of the base plate 4, and parallelly arranged compressor 5 and condenser 6, condenser 6 side installed with fan 7, which directly blows to the outside wall of the rear shell 3, used for condenser 6 wind cooling in the inner cavity, the rear wall side of the rear shell 3 is installed with control box 8 located on the upper side of the compressor 5 and condenser 6; the receiving cavity after the interface of the front cover 1 and the rear shell 3 is installed with the ice making work tank 9 located in the side of the compressor 5 and the condenser 6 in the internal cavity and the top end is sealed by the cover of the upper cover assembly 2, and the ice making work tank 9 is in the shape of "factory" step cavity structure, an insulation layer 10 is integrally wrapped on the outer wall of the ice making work tank 9, which is located in the receiving cavity after the interface of the front cover 1 and the rear shell 3, and is used for heat preservation in the box body; the corresponding ice making work tank 9 on the upper side of the compressor 5 and the condenser 6 is provided with a spraying ice making device 11 located in the first step cavity formed on the upper part of the rear side of the "factory" step cavity, and connected with the compressor 5 and the condenser 6 through the refrigerant pipeline to form a refrigeration system; the first water tank groove 12 is formed at the bottom side of the first step cavity, which is used for supplying ice making water to the spraying ice making device 11 and receiving the cold water falling from the spraying ice making device 11; the first water pump 13 is installed at the bottom side of the first water tank groove 12, which is used for pumping the ice water stored at the bottom of the first water tank groove 12 to the spraying ice making device 11 for spraying ice making; the corresponding ice making work tank 9 on the side of the compressor 5 and the condenser 6 is provided with a second step cavity in the front cavity of the ice making work tank 9, which is located in the front side of the "factory" step cavity and has a step difference with the first step cavity; the second water tank groove 14 is formed at the bottom of the second step cavity, which is used for adding raw water for ice making from the outside; the second water pump 15 is further provided on the outer side wall of the bottom of the second step cavity, which is in communication with the bottom of the second water tank groove 14 and pumps water into the first water tank groove 12 through the pipeline; the ice basket 16 is further sleeved on the upper part of the second step cavity, which is used for receiving the ice blocks automatically discharged from the first step cavity to the second step cavity by gravity through the spraying ice making device 11; the flip cover 20 is provided on the upper side of the ice basket 16 on the upper cover assembly 2, which is used for opening the second step cavity, taking ice from the ice basket 16 and adding raw water to the second water tank groove 14.

[0028] Moreover, the first drainage hole 120 is provided on the side wall of the bottom of the first water tank groove 12, which is adjacent to the second step cavity, and is used for draining water into the second water tank groove 14; the sealing plug installed at the first drainage hole 120 is removed, and the water in the first water tank groove 12 will automatically flow into the second water tank groove 14; at the same time, the second drainage hole 140 is provided on the side wall of the bottom of the second water tank groove 14, which is used for draining water outside; the sealing plug installed at the second drainage hole 140 is removed, and the water can be drained out of the machine, which is convenient for cleaning and maintaining the inside of the whole machine box body.

[0029] As Figures 1 to 13 shown, the spraying ice-making device 11 comprises a spraying evaporator 110 for ice-making, a spraying pipe 111 installed in the first stepped cavity along the left-right transverse direction and connected with the first water pump 13 through a pipeline, and an ice block water filtering grid 112. A plurality of fan-shaped nozzles 113 corresponding to each column of ice-making grids 1102 on the lower side of the spraying evaporator 110 are installed on the spraying pipe 111. The ice block water filtering grid 112 is arranged opposite to the ice-making grids 1102 on the lower side of the spraying evaporator 110 and is obliquely installed on the upper side of the spraying pipe 111, and forms an equal-interval grid structure for facilitating the spraying water of the fan-shaped nozzles 113 to pass through and for facilitating the ice blocks in the ice-making grids 1102 to slide down along the inclined surface and simultaneously filter out the melted ice water. A plurality of coaxial and parallel arranged ice block sliding-out sides are rotationally connected to the lower side of the spraying evaporator 110 and are automatically set to be obliquely arranged by their own gravity, and at the same time, are surrounded by the inner wall on the upper side of the first stepped cavity to form a closed space for preventing the spraying water of the fan-shaped nozzles 113 from overflowing, and for facilitating the ice blocks on the ice block water filtering grid 112 to push the ice curtain swing arm plate 17 to deflect and directly slide into the second stepped cavity. In this embodiment, the top side pivot of the ice curtain swing arm plate 17 is elastically buckled from the side to the rear shell seat 21 on the upper side of the spraying evaporator 110, which not only facilitates disassembly, but also facilitates cleaning and maintenance of the interior of the ice-making grids 1102 after disassembly.

[0030] As Figure 1 , Figures 4 to 13As shown, the spray evaporator 110 includes an evaporative copper pipe 1100, an ice tray base 1101, and a plurality of arrayed ice cube molds 1102. The evaporative copper pipe 1100 is in communication with a refrigeration system for ice making. The ice cube molds 1102 are arranged on the lower end surface of the ice tray base 1101 and are integrally formed by aluminum alloy die casting. The evaporative copper pipe 1100 is sequentially bent to form double rows of curved channels that are in direct heat exchange with each ice cube forming cavity of the ice cube molds 1102 and are sequentially and circularly connected. The ice tray base 1101 is integrally die cast with the ice cube molds 1102 along the extension direction of the evaporative copper pipe 1100, and the evaporative copper pipe 1100 is embedded and installed in the inner cavity of each ice cube mold 1102. A negative pressure demolding hole 18 is further provided in the inner cavity bottom of each ice cube forming cavity of the ice cube molds 1102 for rapid demolding of ice cubes in the ice cube molds 1102 and preventing negative pressure adsorption on the inner cavity bottom. In this embodiment, the corresponding lower side surface of the integrally formed ice tray base 1101 and ice cube molds 1102 is further provided with a partition cover 19 that is integrally formed of silica gel or plastic material for heat conduction insulation, avoids direct contact of spray water with the ice cube molds 1102, and prevents the ice cube molds 1102 from being heated and frozen into ice. The partition cover 19 is provided with ice outlets 190 corresponding to each ice cube forming cavity of the ice cube molds 1102. A rear shell seat 21 that is integrally formed of silica gel or plastic material for heat conduction insulation and is in abutment with the partition cover 19 to form a closed cavity for wrapping the entire ice tray base 1101 and ice cube mold refrigeration source to prevent energy dissipation of the refrigeration source is further provided on the outer side of the ice tray base 1101. The partition cover 19 is circumferentially clamped to the lower side of the ice cube molds 1102, and the ice outlets of the partition cover 19 are further locked and fixed to the ice cube molds 1102 by a plurality of plastic screws 22.

[0031] The ice making method of the granular ice maker is as shown in Figure 4 、 Figure 7 、 Figure 14 and Figure 1 , and includes the following steps: S1, starting, determining the water level of the second water tank groove 14 in the second stepped cavity by the liquid level switch 23; S2, when the water level of the second water tank groove 14 meets the set requirements, the second water pump 15 is started to pump water into the first water tank groove 12 in the first stepped cavity; In this step, an NTC temperature sensor 24 for detecting water temperature is further provided in the first water tank groove 12. The system prolongs or shortens the ice making time according to the water temperature detected by the NTC temperature sensor 24. When the water temperature is high, the ice making time is appropriately prolonged, and when the water temperature is low, the ice making time is shortened, so as to ensure the consistency of the size of each ice cube; S3, after the first water tank groove 12 is filled with the required water for ice making, the first water pump 13 is started to pump water to the spray pipe 111 in the spray ice making device 11 through the pipeline; S4, at the same time, the refrigeration system formed by connecting the compressor 5 and the condenser 6 through the refrigerant pipeline is started to work; S5, under the continuous pumping of water by the first water pump 13, each fan-shaped nozzle 113 on the spray pipe 111 continuously sprays water into each ice making cell 1102 of the spray ice making device 11, until a complete ice block is formed; S5.1, when the ice making cell 1102 issues a water shortage warning during the ice making process, the second water pump 15 is started again to pump the water stored in the second water tank groove 14 into the first water tank groove 12, until the first water tank groove 12 is filled with the required water for ice making; S5.2, when the ice making cell 1102 simultaneously appears water shortage in the second water tank groove 14 and the first water tank groove 12 during the ice making process, the machine stops working and issues a water shortage prompt, and the user manually adds water to the second water tank groove 14; S6, after each ice making cell 1102 completes ice making, the refrigeration system enters the ice removal working mode, the ice block in the ice making cell 1102 falls down along the inclined surface of the equidistant grid structure and enters the ice basket 16 in the second stepped cavity; S7, whether the ice block stored in the ice basket 16 is full is judged, if not, the steps S2 to S6 are repeatedly cycled until the ice block is full in the ice basket 16; S8, after the ice block is full in the ice basket 16, an ice full prompt is issued and the machine is stopped synchronously.

[0032] In this embodiment, the "factory" shaped stepped cavity structure is formed in the ice making working tank 9, the first water tank groove 12 is arranged at the bottom side of the first stepped cavity in the "factory" shaped stepped cavity structure, and the first water pump 13 for pumping water to the spray ice making device 11 is arranged at the bottom side of the first water tank groove 12; at the same time, the second stepped cavity with a stepped difference from the first stepped cavity is formed at the front side of the "factory" shaped stepped cavity in the ice making working tank 9, the second water tank groove 14 is arranged at the bottom of the second stepped cavity, and the second water pump 15 for pumping water to the first water tank groove 12 is arranged at the outer side of the bottom of the second stepped cavity; by increasing a small first water tank groove 12, the water amount participating in the ice making cycle is less, the ice making time is shortened, the evaporation efficiency and the ice block freezing speed are improved, the fast ice making and ice discharging are realized, the user's long waiting time is avoided, and the user's fast ice demand can be effectively met.

[0033] The above described embodiments are only the preferred embodiments of the present application, and do not limit the implementation range of the present application, and equivalent changes made according to the shape, structure and principle of the present application should be covered in the protection range of the present application.

Claims

1. A granular ice maker for rapid ice making and dispensing, characterized in that, It includes an upper cover assembly, a front cover housing, a rear housing, and a base plate. After the front cover housing and the rear housing are docked front and rear, the bottom sides of both are承接安装 (assembled and mounted) on the base plate, and the upper cover assembly is sealed and fixed to the top sides of the docked front cover housing and rear housing; An ice-making working box with a "factory" - shaped stepped cavity structure is installed in the accommodation cavity after the front cover housing and the rear housing are docked. The top end of the ice-making working box is sealed by the upper cover assembly; In the ice-making working box, a spray ice-making device is provided in the first stepped cavity formed at the upper rear side of the "factory" - shaped stepped cavity and is connected through a refrigerant pipeline to form a refrigeration system; At the bottom side of the first stepped cavity, a first water tank groove is formed for supplying ice-making water to the spray ice-making device and receiving the cold water dropped by the spray ice-making device. At the bottom side of the first water tank groove, a first water pump is installed for pumping the ice water stored at the bottom of the first water tank groove to the spray ice-making device through a pipeline for ice-making by spraying; In the front cavity of the ice-making working box, a second stepped cavity is provided at the front side of the "factory" - shaped stepped cavity and has a stepped drop compared with the first stepped cavity. At the bottom of the second stepped cavity, a second water tank groove for adding raw water for ice-making from the outside is formed. On the outer side wall at the bottom of the second stepped cavity, a second water pump is also provided, which is connected to the bottom of the second water tank groove and pumps water to the first water tank groove through a pipeline; In the upper space of the second stepped cavity, an ice basket is also sleeved for receiving the ice cubes that the spray ice-making device automatically drains by gravity from the first stepped cavity to the second stepped cavity; 2. The granular cube ice maker according to claim 1, characterized in that, At the lower side of the rear housing, a compressor and a condenser are installed side by side behind the base plate. A blower for air-cooling the condenser in the inner cavity is installed beside the condenser and directly blows air to the outer side wall of the rear housing. A control box is installed on the rear wall side of the rear housing above the compressor and the condenser; An ice-making working box with its top end sealed by the upper cover assembly is installed in the internal cavity beside the compressor and the condenser in the accommodation cavity after the front cover housing and the rear housing are docked; On the upper cover assembly, a flip cover corresponding to the upper side of the ice basket is provided for easily opening the second stepped cavity, taking ice from the ice basket, and adding raw water to the second water tank groove; 3. The granular cube ice maker according to claim 1, characterized in that, An insulating layer for thermal insulation inside the box is integrally wrapped around the outer wall of the ice-making working box in the accommodation cavity after the front cover housing and the rear housing are docked; 4. The granular cube ice maker according to claim 1, characterized in that, The spray ice-making device includes a spray evaporator for ice-making, a spray pipe, and an ice cube water filtering grille. The spray pipe is installed horizontally from left to right in the first stepped cavity and is connected to the first water pump through a pipeline. A plurality of sector nozzles corresponding to each row of ice-making grids on the lower side of the spray evaporator are installed on the spray pipe; The ice cube water filtering grille is arranged opposite to the ice-making grids on the lower side of the spray evaporator and is inclined and installed above the spray pipe, forming an equal-gap grille structure that facilitates the spray water from the sector nozzles to pass through, allows the ice cubes in the ice-making grids to fall along the inclined surface and be导出 (discharged), and at the same time filters out the melted ice water; The lower side of the spray evaporator, relative to the side where the ice blocks slide out of the ice block filter grid, is rotatably connected to multiple coaxially arranged parallel plates that automatically droop down under their own weight. At the same time, these plates form a closed space with the upper inner wall of the first stepped cavity to prevent the spray water from the fan-shaped nozzles from overflowing. They also facilitate the ice blocks that slide off the ice block filter grid to deflect and slide directly into the ice basket in the second stepped cavity.

5. A granular cube ice maker according to claim 4, characterized in that, The spray evaporator includes evaporation copper tubes, an ice tray base, and multiple arrayed ice-making grids. The evaporation copper tubes are connected to the ice-making refrigeration system. The ice tray is set on the lower end surface of the ice tray base, and the two are integrally formed by die casting of aluminum alloy. The evaporation copper tube is bent in sequence relative to each ice block forming cavity in the ice grid to form one or two rows of curved channels that directly exchange cold energy with each ice block forming cavity in the ice grid and are connected and circulated in sequence. When the ice tray base is integrally die-cast along the extension direction of the evaporation copper tube and with the ice grid, the evaporation copper tube is embedded and installed on the corresponding side of the inner cavity of each ice grid.

6. The granular cube ice maker according to claim 5, characterized in that: The bottom of the inner cavity of each ice block forming chamber on the ice tray is also provided with a negative pressure demolding hole for quick demolding of ice blocks in the ice tray and to prevent negative pressure adsorption at the bottom of the inner cavity.

7. The granular cube ice maker according to claim 5, characterized in that: The ice tray base and the ice grid corresponding to the ice grid are also fitted with a partition cover made of silicone or plastic material that is used to insulate heat conduction. This prevents the sprayed water from directly contacting the ice grid and being frozen into ice by the ice grid, thus avoiding the situation where ice blocks stick together. The partition cover is provided with an ice outlet corresponding to each ice block forming cavity on the ice grid.

8. The granular cube ice maker according to claim 7, characterized in that: The outer side of the ice tray base is also sealed with a back cover made of silicone or plastic material that is integrally molded to insulate heat conduction. This back cover is connected to the partition cover to form a closed cavity to enclose the entire ice tray base and the ice grid cooling source to prevent the cold source energy from dissipating.

9. A pellet ice maker according to claim 7, characterized in that: The divider cover is circumferentially fitted onto the lower side of the ice tray, and the ice outlet in the middle of the divider cover is further secured to the ice tray by multiple plastic screws.

10. The ice-making method of a granular cube ice maker according to any one of claims 1 to 9, characterized in that: Includes the following steps: S1. Power on and determine the water level in the second water tank in the second-step cavity; S2. When the water level in the second water tank meets the set requirements, the second water pump starts and pumps water into the first water tank in the first step cavity. S3. After the first water tank is filled with the required water for ice making, the first water pump is started and pumps water to the spray pipe in the spray ice making device through the pipeline. S4. At the same time, the refrigeration system connected to the compressor and condenser through refrigerant pipelines starts working. S5. Each fan-shaped nozzle on the spray pipe continuously sprays water into each ice-making grid of the spray evaporator in the spray ice-making device under the continuous pumping of the first water pump until a complete ice block is formed. S6. After each ice-making grid completes ice making, the refrigeration system enters the de-icing working mode. The ice blocks in the ice-making grid fall out along the inclined surface of the equal-gap grid structure and enter the ice basket in the second-step cavity. S7. Determine whether the ice basket is full. If not, repeat steps S2 to S6 until the ice basket is full. S8. Once the ice basket is full of ice, a full ice notification will be issued, and the machine will shut down simultaneously.

11. The ice-making method of a granular cube ice maker according to claim 10, characterized in that: Step S5 also includes: When the ice-making process is in progress, if the first water tank issues a water shortage alarm, the second water pump will be restarted to pump the water stored in the second water tank into the first water tank until the first water tank is filled with the required amount of water for ice making. When the ice maker is making ice, if both the second and first water tanks run out of water at the same time, the machine will stop working and issue a water shortage warning. Water should be added to the second water tank manually.

12. The ice-making method of a granular cube ice maker according to claim 10, characterized in that: Step S2 also includes: An NTC temperature sensor for detecting water temperature is installed in the first water tank. The system extends or shortens the ice-making time based on the water temperature detected by the NTC temperature sensor. When the water temperature is high, the ice-making time is extended appropriately, and when the water temperature is low, the ice-making time is shortened.

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