A fog direct injection water supply type seawater ice making system

Abstract

The present invention discloses a fog-like direct-injection water supply type seawater ice-making system, which includes a control system, a human-machine interaction system (1), an ice-making barrel and a compressor (7). In the ice-making barrel, fog-like direct nozzles (15) of the same specification are equidistantly installed along the vertical direction on the internal main shaft. Pressurized seawater passes through the internal flow channel of the main shaft and sprays the pressurized water flow onto the inner wall of the ice-making barrel through the fog-like direct nozzles (15). The seawater evenly covers the inside of the ice-making barrel, obtaining a larger heat exchange area per unit time, thereby greatly improving the ice-making efficiency. At the same time, a compensation ice-making section is arranged at the bottom of the main shaft to reduce the residual amount of seawater, and a water receiving tank is arranged at the bottom of the ice-making barrel to separate the residual seawater during the ice-making process. The present invention is applicable to the field of seawater ice-making, with a fast response speed, adjustable ice-making thickness, greatly improved ice-making and ice-crushing efficiency and heat exchange efficiency, and at the same time realizing the functions of human-machine interaction and information recording.

Description

Technical Field

[0001] The present invention belongs to the field of seawater ice making, and relates to a seawater ice making system based on fog-like direct injection water supply type. Background Art

[0002] The ultimate consumer groups of aquatic products in our country pay more attention to the "freshness" of catches and pursue good taste and texture. Therefore, there are relatively high requirements for the place of origin, preservation, ingredients, and subsequent processing methods, thus forming very unique consumption habits. Therefore, the technologies and equipment for special refrigeration and preservation on fishing boats are in strong demand in the country. Cold seawater machines, flake ice machines, and preservation machines all require significant and rapid cooling technologies to adapt to the size of the catch. However, conventional ice making equipment has low refrigeration performance, low heat exchange efficiency, and low utilization rate of refrigeration area, resulting in the easy deterioration of aquatic products and inability to adapt to the size of the catch. Summary of the Invention

[0003] In view of the above situation, the purpose of the present invention is to provide a seawater ice making system based on fog-like direct injection water supply type, which can greatly improve the refrigeration efficiency and reliability of the seawater ice making system.

[0004] The seawater ice making system based on fog-like direct injection water supply type of the present invention is characterized in that: it includes an ice making barrel, a transmission system, a pressurized water system, and a compressor refrigeration system. The ice making barrel includes an inner barrel wall, an outer barrel wall, and a refrigerant flow channel provided between the inner barrel wall and the outer barrel wall. The refrigerant flow channel is communicated with the compressor refrigeration system. A main shaft is provided at the center of the inner barrel wall. A fog-like direct injection nozzle for spraying water onto the inner surface of the inner barrel wall is arranged on the main shaft. The water sprayed onto the inner surface of the inner barrel wall is condensed to form ice flakes through the refrigerant flow channel. A pressurized water flow channel communicated with the fog-like direct injection nozzle is arranged inside the main shaft. The lower end of the main shaft has a water inlet communicated with the pressurized water flow channel, and the water inlet is communicated with the pressurized water system. The upper end of the main shaft is connected to the transmission system to realize the rotation of the main shaft. A scraper abutted against the inner surface of the inner barrel wall is arranged on the main shaft. When the scraper rotates with the main shaft, the ice flakes generated on the inner surface of the inner barrel wall are scraped off. An ice flake outlet is arranged at the lower part of the ice making barrel.

[0005] Preferably, the blade surface of the above scraper is spiral.

[0006] Preferably, the upper and lower ends of the above scraper are rotatably hinged on a bracket. The bracket is fixedly arranged on the main shaft. The bracket includes an upper piece, a lower piece, and baffles located on both sides of the scraper. The upper and lower ends of the two baffles are respectively fixed to the upper piece and the lower piece. During the ice crushing process, on the basis of rotating around the main shaft, the scraper performs ice crushing actions through its own rotation to obtain higher ice crushing efficiency.

[0007] Preferably, the upper and lower pieces have the same shape and are quarter-circular arc plates; the transmission system includes a bevel gear driven to rotate by the output end of the motor. The bevel gear meshes with a second bevel gear, and the second bevel gear is coaxially and fixedly connected to a first spur gear. The first spur gear meshes with a spur gear, and the spur gear is fixedly connected to the end of the upper part of the main shaft extending out of the ice-making bucket.

[0008] Preferably, the above-mentioned pressurized water system pressurizes seawater, filters it through a filter screen, and injects it into the pressurized water flow channel of the main shaft of the ice-making bucket. After the seawater is sprayed onto the inner wall of the ice-making bucket in a mist form through a straight mist nozzle, through the heat exchange of the refrigerant in the refrigerant flow channel, an ice sheet with a certain uniform thickness is formed on the inner surface of the inner cylinder wall of the ice-making bucket.

[0009] Preferably, the above-mentioned straight mist nozzles are equidistantly installed in the axial direction of the main shaft of the ice-making bucket, and three rows of straight mist nozzles are evenly distributed in the circumferential direction of the main shaft; the straight mist nozzles can adjust the size of the nozzle water outlet diameter, and at the same time can control the seawater flow rate through the bottom water inlet valve, thereby changing the amount of seawater sprayed onto the inner wall of the ice-making bucket, the mist degree and the spraying area, so as to control the ice formation rate and the ice surface thickness.

[0010] Preferably, the above-mentioned refrigerant flow channel and the compressor refrigeration system are through the straight mist nozzles equidistantly installed on the main shaft of the ice-making bucket, and the pressurized water flow is evenly sprayed onto the inner wall of the ice-making bucket, so as to obtain a larger heat exchange area per unit time, so a larger amount of heat exchange is obtained. The calculation formula for the change in the amount of heat exchange is:

[0011]

[0012] Where: is the amount of heat exchange; is the atomization coefficient; is the material heat transfer coefficient; is the average temperature difference; is the heat exchange area per unit time.

[0013] Preferably, it further includes a control system. The control system includes a filter amplifier, a logic arithmetic unit, a microcontroller and a pressure sensor, effectively filters out the frequencies outside the signal frequency point of the compressor in the compressor refrigeration system that is less than the preset pressure difference, improves the anti-interference ability and further amplifies the power, and then sends it to the control circuit.

[0014] Preferably, the above microcontroller is one of a single-chip microcomputer and a PLC, which receives and processes control signals input from the compressor and the human-machine interface, records the time and magnitude information of various control signals input, and obtains characteristic parameters corresponding to when the compressor differential pressure is greater than the preset differential pressure, including occurrence time, differential pressure magnitude, working temperature, etc., providing a basis for analyzing the working state of the compressor; under normal operation, the compressor can control its differential pressure to remain in a balanced state through a pressure sensor and a microcontroller, thereby improving the refrigerant delivery efficiency and shortening the ice-making time of the system.

[0015] Preferably, the ice-making operation steps are as follows:

[0016] (1) Input the corresponding preset differential pressure of the compressor through the human-machine interaction system;

[0017] (2) The control system and the human-machine interaction system maintain the system differential pressure stable by controlling the compressor power to adapt to the actual required ice-making efficiency;

[0018] (3) The refrigerant enters the inside of the ice-making barrel through the spiral refrigerant flow channel for precooling. After the precooling is completed, seawater sprays the pressurized water evenly onto the inner wall of the ice-making barrel through the fog-like direct spray nozzle. The nozzles are installed on the main shaft of the inner wall of the ice-making barrel at equal distances in the vertical direction and rotate together with the main shaft;

[0019] (4) The spiral scraper is driven by the transmission system and performs ice-breaking actions through its own rotation while rotating around the main shaft;

[0020] (5) Store the working characteristic signals through the human-machine interaction system to detect the working state of the ice-making system in real time.

[0021] The beneficial effects of the present invention are:

[0022] 1. The fog-like direct spray water supply type seawater ice-making system of the present invention can make the pressurized seawater spray the pressurized water flow onto the inner wall of the ice-making barrel (3) through the fog-like direct spray nozzle (15). The nozzles are installed on the main shaft of the inner wall of the ice-making barrel (3) at equal distances in the vertical direction and rotate together with the main shaft. At the same time, a compensation ice-making section is set at the bottom of the main shaft to reduce the residual amount of seawater. Compared with setting a water outlet at the top of the ice-making barrel (3), it can cover the inside of the ice-making barrel (3) with seawater faster, thereby obtaining a larger heat exchange area and higher ice-making efficiency. At the same time, the fog-like direct spray nozzle (15) can adjust the size of the nozzle water spray orifice, and can also control the seawater flow through the valve of the bottom water inlet (10), thereby changing the amount of seawater sprayed onto the inner wall of the ice-making barrel (3), the fog degree and the spraying area to control the ice formation rate and ice surface thickness, solving the problems of low heat exchange efficiency and low utilization rate of the refrigeration area of existing seawater ice-making equipment.

[0023] 2. The controllability of the present invention is strong. It can achieve the equality between the actual pressure difference of the man-machine interaction and the compressor and the preset pressure difference, and can also record information such as the time and magnitude of various control signal inputs, and obtain the corresponding characteristic parameters during the operation of the compressor, including the fault occurrence time, pressure difference magnitude, working temperature, etc., providing a basis for analyzing the working state of the compressor. At the same time, when the compressor is working normally, it can control its pressure difference to remain in a balanced state through the pressure sensor and the microcontroller, thereby improving the refrigerant delivery efficiency and shortening the ice-making time of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the control process of a seawater ice-making system based on fog-like direct injection water supply according to the present invention;

[0025] Figure 2 It is a schematic diagram of the overall ice-making system according to the present invention;

[0026] Figure 3 It is a cross-sectional view of the internal spiral flow channel of the ice-making bucket according to the present invention;

[0027] Figure 4 It is a schematic diagram of the transmission mechanism, scraper and fog-like direct injection nozzle according to the present invention;

[0028] Figure 5 It is a layout diagram of the positions of the fog-like direct injection nozzles according to the present invention;

[0029] 1 - Man-machine interaction system; 2 - Transmission system; 3 - Ice-making bucket; 4 - Water storage tank; 5 - Brushless motor; 6 - Filter; 7 - Compressor; 8 - Bevel gear; 9 - Refrigeration flow channel; 10 - Water inlet; 11 - Asynchronous motor; 12 - Bearing; 13 - Straight gear; 14 - Scraper; 15 - Fog-like direct injection nozzle; 16 - Main shaft; 18 - Baffle; 19 - Second bevel gear; 20 - First straight gear. DETAILED DESCRIPTION OF THE INVENTION

[0030] In order to have a clearer understanding of the technical features, objectives and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0031] The seawater ice-making system based on fog-like direct injection water supply according to the present invention includes an ice-making bucket 3, a transmission system 2, a pressurized water system and a compressor refrigeration system. The ice-making bucket 3 includes an inner cylinder wall and an outer cylinder wall, which are made of stainless steel and have good corrosion resistance and thermal conductivity. A refrigeration flow channel 9 is provided between the inner cylinder wall and the outer cylinder wall, and the refrigerant flow channel is connected to the compressor refrigeration system. A main shaft 16 is provided at the center of the inner cylinder wall, and fog-like direct injection nozzles 15 for spraying water onto the inner surface of the inner cylinder wall are arranged on the main shaft. The water sprayed onto the inner surface of the inner cylinder wall is condensed to form ice flakes through the refrigerant flow channel.

[0032] Inside the main shaft, there is a pressurized water flow channel connected to the fog-like direct spray nozzle 15. The lower end of the main shaft has a water inlet 10 connected to the pressurized water flow channel. The water inlet 10 is connected to the pressurized water system. After seawater is transported into the water inlet by a water pump and pipeline in the pressurized water system, it is sprayed out from the fog-like direct spray nozzle 15 through the pressurized water flow channel. The upper end of the main shaft is connected to the transmission system 2 to achieve the rotation of the main shaft. The transmission system 2 can be a motor, or a speed-changing mechanism driven by a motor, etc., as long as it can achieve the rotation of the main shaft. A scraper 14 is provided on the main shaft and abuts against the inner surface of the inner cylinder wall. When the scraper 14 rotates with the main shaft, the ice flakes generated on the inner surface of the inner cylinder wall are scraped off. An ice flake outlet is provided at the lower part of the ice-making bucket. After the water sprayed out from the fog-like direct spray nozzle 15 condenses on the inner surface of the inner cylinder wall to form ice flakes, they are scraped off by the scraper 14 and output from the ice flake outlet.

[0033] To improve the ice scraping effect, the upper and lower ends of the scraper 14 are rotatably hinged to the bracket. The bracket is fixedly arranged on the main shaft. The bracket includes an upper piece, a lower piece and baffles 18 on both sides of the scraper. The upper and lower ends of the two baffles are respectively fixed to the upper piece and the lower piece. During the ice crushing process, on the basis of rotating around the main shaft, the scraper performs ice crushing actions through its own rotation to obtain greater ice crushing efficiency.

[0034] In one embodiment, the upper piece and the lower piece have the same shape and are quarter circular arc plates. The transmission system includes a bevel gear 8 driven to rotate by the output end of the motor. The bevel gear meshes with a second bevel gear 19, and the second bevel gear 19 is coaxially and fixedly connected to a first spur gear 20. The first spur gear 20 meshes with a spur gear 13, and the spur gear 13 is fixedly connected to the end of the upper part of the main shaft extending out of the ice-making bucket.

[0035] The specific structure and embodiments of the present invention are described as follows:

[0036] Figure 1 The figure shows a schematic diagram of the control process of the present invention, including a control system, an ice-making bucket 3 and a compressor 7. The control system sets a preset pressure difference through the human-machine interface. When the compressor 7 of the compression refrigeration system starts to work, the power of the compressor is controlled by the control system to stabilize the pressure difference during the operation of the compressor, thereby controlling the refrigerant delivery rate. Finally, ice-making and ice-crushing actions are performed on the inner wall of the ice-making bucket 3 through the fog-like direct spray nozzle 15 and the spiral scraper 14.

[0037] The ice-making system is as Figure 2As shown in the figure, it includes a human-machine interaction system 1, a transmission system 2, an ice-making bucket 3, a water storage tank 4 for storing water, a brushless motor 5, a filter 6, and a compressor 7. The human-machine interaction system 1 contains a control system, which controls the operation of the overall ice-making process according to the instructions input through the human-machine interface. The compressor 7 is connected to the filter 6. After the refrigerant is filtered by the filter 6, it is injected into the refrigeration flow channel 9 inside the ice-making bucket 3, thereby completing the precooling of the ice-making bucket 3. Through the mutual cooperation of the compressor 7 and the control system, the transmission rate of the refrigerant can be ensured to match the ice-making rate, so as to obtain lower energy consumption. Through the cooperation between the compressor 7 and the filter 6, the liquid refrigerant is prevented from flowing back, which may cause a failure of the compressor 7. The pressurized water system pumps water from the water storage tank 4 and transports it to the water inlet 10.

[0038] The schematic diagram of the ice-making bucket 3 is as Figure 3 shown. The ice-making bucket 3 is composed of a scraper 14, a mist-type direct spray nozzle 15, a water inlet 10, and an ice output port for ice flakes. In the ice-making bucket 3, a transmission system 2 is provided at the top. Through the mutual cooperation of the bevel gear 8 and the spur gear 13, the transmission process is more stable and reliable. A spiral-shaped refrigerant flow channel is arranged between the inner cylinder wall and the outer cylinder wall to increase the heat exchange efficiency, thereby improving the ice-making efficiency. A pressurized water flow channel is provided inside the main shaft. This flow channel connects the pressurized water system and the mist-type direct spray nozzle 15. A spiral scraper 14, a baffle, and a mist-type direct spray nozzle 15 are installed on the main shaft of the ice-making bucket 3. The rotation of the main shaft drives the spray nozzle and the scraper 14 to perform ice-making and ice-crushing actions. At the same time, an auxiliary refrigeration section and a water receiving tank are provided at the bottom of the inner wall of the ice-making bucket, which can minimize the residual sea water volume and separate the residual sea water from the ice flakes.

[0039] The ice-making and ice-crushing processes are as Figure 4 shown. It includes a mist-type direct spray nozzle 15, a scraper 14, and a transmission system 2. The ice-making process is as follows: The refrigerant enters the inside of the ice-making bucket 3 through the spiral flow channel for precooling. After the precooling is completed, the seawater is pressurized by the pressurized water system, filtered through the filter screen, and then injected into the inner flow channel of the main shaft of the ice-making bucket 3. The mist-type direct spray nozzle 15 sprays the pressurized seawater in the form of mist onto the inner wall of the ice-making bucket 3. After heat exchange with the refrigerant, ice flakes with a certain uniform thickness are formed on the inner wall of the ice-making bucket 3. The spray nozzles are installed on the main shaft of the inner wall of the ice-making bucket 3 at equal distances in the vertical direction and rotate with the main shaft. At the same time, a compensation ice-making section can be provided at the bottom of the main shaft to reduce the residual amount of seawater. Compared with setting a water outlet at the top of the ice-making bucket 3, the seawater can cover the inside of the ice-making bucket 3 faster, thereby obtaining a larger heat exchange area and a higher ice-making efficiency. The ice-crushing process is as follows: The spiral scraper 14 is connected to the transmission system 2 through the main shaft 16. On the basis of rotating around the central axis, it performs ice-crushing actions through its own rotation to obtain a higher ice-crushing efficiency.

[0040] The position arrangement of the mist-type direct spray nozzle 15 is as Figure 5As shown in the figure, the main shaft of the ice-making bucket 3 is divided into four parts. Among them, a spiral scraper 14 and a baffle are installed in one-fourth of the space, and atomizing direct nozzles 15 are installed at equal distances in the remaining part. The rotation of the main shaft drives the nozzles and the scraper 14 to perform ice-making and ice-crushing actions. Compared with setting the water outlet at the top, this arrangement can obtain a larger heat exchange area per unit time, greatly improving the ice-making efficiency while keeping the power of the compressor 7 unchanged. At the same time, a compensation ice-making section is set at the bottom of the main shaft, which can greatly reduce the residual amount of seawater.

[0041] Embodiment 1: As Figure 2 shown, a seawater ice-making system based on atomizing direct water supply of the present invention, wherein: the operator sets the preset pressure difference of the compressor 7 to 2.1 Mpa through the human-machine interaction system 1. When the compressor 7 starts to work, the control system controls the power change of the compressor 7 to stabilize the refrigerant delivery rate, and finally ice-making and ice-crushing actions are carried out inside the ice-making bucket 3; at the same time, the microcontroller records information such as the time and magnitude of various control signals input through program design, and obtains the characteristic parameters corresponding to when the pressure difference of the compressor 7 is greater than the preset pressure difference, including the occurrence time, pressure difference magnitude, working temperature, etc., and obtains a pressure difference of 2.1 Mpa and a working temperature of 30 °C through signal conversion processing, providing a basis for subsequent analysis of the working state of the compressor 7.

[0042] Embodiment 2: As Figures 2 - 5 shown, a seawater ice-making system based on atomizing direct water supply of the present invention, wherein: the main shaft of the ice-making bucket 3 is divided into four parts. Among them, a spiral scraper 14 and a baffle are installed in one-fourth of the space, and atomizing direct nozzles 15 are installed at equal distances in the remaining part. During the ice-making process, the refrigerant is injected into the spiral refrigeration flow channel 9 through the compressor and the filter 6 to pre-cool the ice-making bucket 3. Subsequently, the transmission system 2 drives the scraper 14 to operate at a speed of 0.05 m / s. At the same time, the seawater is pressurized by the pressurized water system, filtered through the filter screen and then injected into the inner flow channel of the main shaft of the ice-making bucket 3. The atomizing direct nozzles 15 uniformly spray the pressurized seawater in the form of mist onto the inner wall of the ice-making bucket 3. After heat exchange with the refrigerant, ice sheets with a certain uniform thickness are formed on the inner wall of the ice-making bucket 3. The residual seawater further completes the ice-making action through the compensation ice-making section arranged at the bottom of the inner wall of the ice-making cylinder, reducing the residual amount of seawater during the ice-making process. And a water receiving tank is provided at the bottom, which can separate the residual seawater from the ice sheets, and its ice production is 7 tons per day.

[0043] The above further details the above content of the present invention in combination with the specific implementation manners of the embodiments described in the accompanying drawings. However, this should not be understood as limiting the scope of the above subject matter of the present invention to the following examples. Without departing from the above technical ideas of the present invention, various substitutions or changes made according to the common general knowledge and conventional means in the art should be included within the scope of the present invention.

Claims

1. A fog direct injection water supply type seawater ice making system, characterized in that: It includes an ice-making bucket (3), a transmission system (2), a pressurized water system and a compressor refrigeration system. The ice-making bucket (3) includes an inner barrel wall, an outer barrel wall, and a refrigerant flow channel (9) provided between the inner barrel wall and the outer barrel wall. The refrigerant flow channel is connected to the compressor refrigeration system. A main shaft (16) is provided at the center of the inner barrel wall. A mist-type direct spray head (15) for spraying water onto the inner surface of the inner barrel wall is arranged on the main shaft. The water sprayed onto the inner surface of the inner barrel wall is condensed by the refrigerant flow channel to form ice flakes. A pressurized water flow channel communicating with the mist-type direct spray head (15) is provided inside the main shaft. The lower end of the main shaft has a water inlet (10) communicating with the pressurized water flow channel. The water inlet (10) is connected to the pressurized water system. The upper end of the main shaft is connected to the transmission system (2) to realize the rotation of the main shaft. A scraper (14) abutted against the inner surface of the inner barrel wall is arranged on the main shaft. When the scraper (14) rotates with the main shaft, the ice flakes generated on the inner surface of the inner barrel wall are scraped off. An ice flake outlet is provided at the lower part of the ice-making bucket. The blade surface of the scraper (14) is spiral. The upper and lower ends of the scraper (14) are rotationally hinged to a bracket. The bracket is fixedly arranged on the main shaft. The bracket includes an upper piece, a lower piece and baffles located on both sides of the scraper (14). The upper and lower ends of the two baffles are respectively fixed to the upper piece and the lower piece. During the ice crushing process, on the basis of rotating around the main shaft, the scraper (14) performs an ice crushing action through its own rotation to obtain a greater ice crushing efficiency. The upper piece and the lower piece have the same shape and are quarter-circular plates. The transmission system (2) includes a bevel gear (8) driven to rotate by the output end of a motor. The bevel gear (8) meshes with a second bevel gear. And the second bevel gear is coaxially and fixedly connected with a first spur gear. The first spur gear meshes with a spur gear (12). The spur gear (12) is fixedly connected to the end of the upper part of the main shaft extending out of the ice-making bucket. The pressurized water system pressurizes seawater, filters it through a filter screen, and injects it into the pressurized water flow channel of the main shaft of the ice-making bucket (3). After the seawater is sprayed onto the inner wall of the ice-making bucket (3) in the form of mist through the mist-type direct spray head (15), through the heat exchange of the refrigerant in the refrigerant flow channel, ice flakes with a certain uniform thickness are formed on the inner surface of the inner barrel wall of the ice-making bucket (3). The mist-type direct spray heads (15) are equidistantly installed in the axial direction of the main shaft of the ice-making bucket (3). Three rows of mist-type direct spray heads (15) are evenly arranged in the circumferential direction of the main shaft. The mist-type direct spray head (15) can adjust the size of the nozzle water outlet diameter, and at the same time can control the seawater flow rate through the valve of the bottom water inlet (10), thereby changing the amount of seawater sprayed onto the inner wall of the ice-making bucket (3), the mist degree and the spraying area, so as to control the ice formation rate and the ice surface thickness. The refrigerant flow channel and the compressor refrigeration system are through the mist-type direct spray heads (15) equidistantly installed on the main shaft of the ice-making bucket (3), and the pressurized water flow is evenly sprayed onto the inner wall of the ice-making bucket (3), so as to obtain a larger heat exchange area per unit time, and thus obtain a larger amount of heat exchange. The calculation formula for the change in the amount of heat exchange is: ; where: is the amount of heat exchange; is the atomization coefficient; is the heat transfer coefficient of the material; is the average temperature difference; is the heat transfer area per unit time; The control system is also included, and the control system includes a filter amplifier, a logic arithmetic unit, a microcontroller, and a pressure sensor, which effectively filters out the frequencies outside the frequency point of the signal with a pressure difference less than the preset pressure difference sent by the compressor in the compression refrigeration system, improves the anti-interference ability, and further amplifies the power and then sends it to the control loop; The microcontroller is one of a single-chip microcomputer and a PLC, receives and processes the control signals input from the compressor and the human-machine interface, and records the time and magnitude information of various control signals input, and obtains the characteristic parameters corresponding when the pressure difference of the compressor is greater than the preset pressure difference, including the occurrence time, the pressure difference magnitude, the working temperature, etc., providing a basis for analyzing the working state of the compressor; The compressor can control its pressure difference to remain in a balanced state through the pressure sensor and the microcontroller under normal working conditions, thereby improving the refrigerant delivery efficiency and shortening the ice-making time of the system; The ice-making operation steps are as follows: (1) Input the preset pressure difference corresponding to the compressor through the man-machine interaction system (1); (2) The control system and the man-machine interaction system (1) maintain the system pressure difference stable by controlling the compressor power, so as to adapt to the actual required ice-making efficiency; (3) The refrigerant enters the inside of the ice-making barrel (3) through the spiral refrigerant flow channel for precooling. After the precooling is completed, seawater sprays the pressurized water evenly onto the inner wall of the ice-making barrel (3) through the fog-like direct spray head (15). The spray heads are installed on the main shaft of the inner wall of the ice-making barrel (3) at equal distances in the vertical direction and rotate together with the main shaft; (4) The spiral scraper (14) is driven by the transmission system (2) to perform ice crushing actions through its own rotation on the basis of rotating around the main shaft; (5) Store the working characteristic signals through the man-machine interaction system (1) to detect the working state of the ice-making system in real time.

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