CN201945111U - Continuous binary ice refrigerator - Google Patents

Abstract

The utility model discloses a continuous binary ice refrigerating machine, which comprises a pump, a liquid storage tank, a refrigerating pipe connected with the refrigerating machine and a storage refrigerator which are sequentially connected through pipelines to form a circuit. : The pump is a booster pump; the pressure of the ice slurry in the liquid storage tank and the refrigeration pipe is 0.1MPa to 4MPa, and the temperature of the ice slurry near the jet outlet of the refrigeration pipe is -5°C to 4°C; Throttle valve to limit the pressure of ice slurry in the liquid storage tank and refrigeration pipe; the liquid storage tank is equipped with a one-way input device that can feed gas or liquid in one direction. It has low noise and produces small and uniform ice crystal particles; the ice slurry has a bacteriostatic effect due to the large amount of low-temperature carbon dioxide, and has a dormant effect on fish; the jet-type ice-making method can quickly and massively produce binary ice ice slurry, etc. Multiple advantages.

Description

Continuous Binary Ice Refrigerator

technical field

The utility model relates to a refrigeration storage device, in particular to a continuous binary ice refrigerator.

Background technique

Binary ice is a promising cooling medium. In recent years, the production, research and application of binary ice (or ice slurry, Ice Slurry) has attracted more and more attention from the ice-making industry. Binary ice is usually a mixture of ice crystal particles with a diameter of 50-100 μm and water. It has the advantage of good fluidity and can be transported by a booster pump. There is no ice layer on the solid heat transfer surface during the ice-making process. , to achieve complete flow heat exchange, so the heat transfer coefficient in the ice making process is large, the heat transfer temperature difference is small, and the COP of the system is significantly improved. Due to the small size of binary ice ice crystal particles, it can achieve a high ice surface area. If binary ice is used for ice storage, it will undoubtedly make ice storage technology more economical and effective. Not only can it achieve high thermal efficiency of ice making, but also Realize a small melting temperature difference and a high melting rate. In addition to being suitable for ice storage air conditioners, binary ice can also enable large-scale ice storage in many chemical or other industries where the temperature is slightly higher than 0°C. However, it is often too wasteful to use large-scale binary ice equipment to transport small batches of aquatic products, broodstock, fish eggs, etc. Therefore, the research on new binary ice refrigeration devices suitable for small batch transportation has certain practical significance.

Contents of the invention

The purpose of the utility model is to provide a continuous binary ice refrigerator with novel structure, low noise, small ice crystal particles, antibacterial effect of ice slurry and continuous formation of binary ice ice slurry in large quantities.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: a continuous binary ice refrigerator, including a pump, a liquid storage tank, a refrigeration pipe connected with a refrigerator and a storage refrigerator connected in sequence through pipelines to form a circuit, and the pipeline's There is ice slurry inside the pipeline, which has: the pump is a booster pump; the pressure of the ice slurry in the liquid storage tank and the refrigeration pipe is 0.1MPa to 4MPa, and the temperature of the ice slurry near the jet outlet of the refrigeration pipe is -5°C to 4°C ; The jet outlet of the refrigeration pipe is equipped with a throttle valve capable of limiting the pressure of the ice slurry in the liquid storage tank and the refrigeration pipe; the liquid storage tank is equipped with a one-way input device that can feed gas or liquid in one direction. The ice slurry enters the liquid storage tank and the refrigeration pipe after being pressurized by the booster pump. Due to the high pressure, the ice slurry is in a liquid state. Moreover, the carbon dioxide fed into the liquid storage tank dissolves into the ice slurry to form a low-temperature and high-pressure saturated carbon dioxide solution. When the ice slurry containing a large amount of carbon dioxide is ejected from the throttle valve, the pressure drops suddenly, and under the joint action of the precipitation of carbon dioxide and the freezing of the ice slurry, ice crystals are formed in the ice slurry to produce binary ice.

In order to optimize the above-mentioned technical scheme, the measures taken also include: the one-way input device feeds carbon dioxide or a liquid dissolved in carbon dioxide at a pressure of 0.1MPa to 4MPa. Higher pressure can increase the solubility of carbon dioxide. During the subsequent depressurization process, due to the corresponding decrease in solubility, it can intensify the precipitation of carbon dioxide and form tiny bubbles, thereby reducing the particle size of binary ice crystals. Ice slurries can also be dissolved with higher carbon dioxide levels using ice making catalysts.

A spiral scraper is arranged inside the storage bin, and the jetting direction of the throttle valve faces the part where the spiral scraper is in contact with the storage bin; the spiral scraper is connected with the motor through a transmission shaft. The injection of the throttle valve makes the ice slurry containing binary ice and ice crystal particles easy to accumulate ice crystals on the inner surface of the storage bin. A spiral scraper is installed at this position to disperse the ice crystal particles and prevent the ice crystals from agglomerating and the particles become larger, thereby effectively improving the ice quality. Fluidity of the slurry.

The spiral scraper has at least two scraper blades arranged radially; the scraper blade is formed with a knife edge and a sharp rectification angle opposite to the position of the knife edge; the knife body of the scraper blade is arc-shaped. The arc-shaped scraper blade can reduce noise. Bubbles are generated by the partial vacuum on the surface of the rotating spiral scraper, and noise is generated when these bubbles burst. This design can make the generated bubbles move to the rectifying angle along the arc-shaped scraper blade, so that the bubbles gather and become larger, reducing the number of bubbles, and the large bubbles are not easy to break, and will become smaller and disappear after returning to the non-vacuum state in the water.

The cooling tube is a sleeve structure, and there is a low-temperature heat exchange fluid for heat exchange between the inner tube and the outer tube of the sleeve structure, and the freezing point of the low-temperature heat exchange fluid is lower than the freezing point of the ice slurry. The refrigerator exchanges heat with the ice slurry through the low-temperature heat-exchange fluid, so the low-temperature heat-exchange fluid should not be overcooled and solidified during this process, so a low-temperature heat-exchange fluid with a lower freezing point is used.

Since the continuous binary ice refrigerator of the present invention adopts a booster pump; the pressure of the ice slurry located in the liquid storage tank and the refrigeration pipe is 0.1MPa to 4MPa, and the temperature of the ice slurry located near the jet outlet of the refrigeration pipe is -5°C to 4°C ; The jet outlet of the refrigeration pipe is equipped with a throttle valve that can limit the pressure of the ice slurry in the liquid storage tank and the refrigeration pipe; the liquid storage tank is equipped with structures such as a one-way input device that can feed gas or liquid in one direction, which has noise. Small, small and uniform ice crystal particles; ice slurry has antibacterial effect due to a large amount of low-temperature carbon dioxide, and has a dormant effect on fish; jet-type ice making can quickly and massively produce binary ice ice slurry and other advantages .

Description of drawings

Fig. 1 is the schematic diagram of pipeline structure of the utility model embodiment;

Fig. 2 is a schematic structural diagram of the front view of the spiral scraper according to the embodiment of the utility model;

Fig. 3 is a schematic structural diagram of the refrigeration pipe of the embodiment of the utility model.

Detailed ways

Below in conjunction with attached embodiment the utility model is described in further detail.

Description of reference numerals: booster pump 1, refrigeration pipe 2, throttle valve 21, storage bin 3, motor 31, transmission shaft 31a, liquid storage tank 4, spiral scraper 5, central shaft 51, scraper blade 52, knife edge 52a , rectification angle 52b, ice slurry 6, ice making catalyst 7, refrigerator 8, low temperature heat exchange fluid 8a.

Embodiment: With reference to Fig. 1 to Fig. 3, the continuous binary ice refrigerator includes a pump, a liquid storage tank 4, a refrigeration pipe 2 connected with a refrigerator 8 and a storage bin 3 which are connected in sequence through pipelines and form a circuit, and the pipelines There is an ice slurry 6 inside the pipeline, which has: the pump is a booster pump 1; the pressure of the ice slurry 6 in the liquid storage tank 4 and the refrigeration pipe 2 is 0.1MPa to 4MPa, preferably 2Mpa in this embodiment, and the ice slurry 6 is located in the refrigerator The temperature near the jet outlet of the tube 2 is -5°C to 4°C, preferably 0°C in this embodiment; the jet outlet of the cooling tube 2 is equipped with a throttle valve that can limit the pressure of the ice slurry 6 in the liquid storage tank 4 and the cooling tube 2 ; The liquid storage tank 4 is formed with a one-way input device that can feed gas or liquid in one direction. The ice slurry 6 enters the liquid storage tank 4 and the refrigeration pipe 2 after being pressurized by the booster pump 1. Because the pressure is relatively high, the ice slurry 6 is in a liquid state. Moreover, the carbon dioxide fed into the liquid storage tank 4 dissolves into the ice slurry 6 to form a low-temperature and high-pressure saturated carbon dioxide solution. When the ice slurry 6 dissolved in a large amount of carbon dioxide is ejected from the throttle valve, the pressure drops suddenly, and under the joint action of the precipitation of carbon dioxide and the freezing of the ice slurry 6, ice crystals are formed in the ice slurry 6 to produce binary ice.

The one-way input device feeds carbon dioxide or a liquid dissolved in carbon dioxide at a pressure of 0.1 MPa to 4 MPa, and the preferred parameter in this embodiment is 2.5 MPa. Higher pressure can increase the solubility of carbon dioxide. During the subsequent depressurization process, due to the corresponding decrease in solubility, it can intensify the precipitation of carbon dioxide and form tiny bubbles, thereby reducing the particle size of binary ice crystals. Also can adopt ice making catalyst 7 to make ice slurry 6 dissolve to have higher carbon dioxide.

The inside of the storage bin 3 is provided with a spiral scraper 5, and the injection direction of the throttle valve is toward the part where the spiral scraper 5 is in contact with the storage bin 3; the spiral scraper 5 is connected to the motor 31 through a transmission shaft 31a. The injection of the throttle valve makes the ice slurry 6 containing binary ice and ice crystal particles easy to accumulate ice crystals on the inner surface of the storage bin 3. A spiral scraper 5 is arranged at this position to disperse the ice crystal particles, prevent the ice crystals from gathering and the particles become larger, and thus can The fluidity of the ice slurry 6 is effectively improved.

The spiral scraper 5 has at least two scraper blades 52 arranged radially; the scraper blade 52 is formed with a knife edge 52a and a sharp rectification angle 52b opposite to the knife edge 52a; the knife body of the scraper blade 52 is arc-shaped. The arc-shaped scraper blade 52 can reduce noise. Bubbles are generated on the surface of the rotating spiral scraper 5 due to partial vacuum, and noise is generated when these bubbles burst. This design enables the generated air bubbles to move to the rectifying angle 52b along the arc-shaped scraper blade 52, so that the air bubbles gather and become larger, reducing the number of air bubbles, and the large air bubbles are not easy to burst, and will become smaller and disappear after returning to the non-vacuum state in the water.

The cooling tube 2 is a sleeve structure, and there is a low-temperature heat exchange fluid 8a for heat exchange between the inner tube and the outer tube of the sleeve structure, and the freezing point of the low-temperature heat exchange fluid 8a is lower than the freezing point of the ice slurry 6 . The refrigerator 8 exchanges heat with the ice slurry 6 through the low-temperature heat-exchange fluid 8a, so the low-temperature heat-exchange fluid 8a should not be overcooled and solidified during this process, so a low-temperature heat-exchange fluid 8a with a lower freezing point is used.

Although the utility model has been described in conjunction with the preferred embodiment, it is not intended to limit the utility model, any skilled in the art, without departing from the spirit and scope of the utility model, can make reference to the utility model listed here The subject matter is subject to various changes, substitutions of equivalents and modifications, so the scope of protection of the present invention should be determined only by the scope defined by the appended claims.

Claims (5)

1. A continuous binary ice refrigerator, including a pump, a liquid storage tank (4), a refrigeration pipe (2) connected to a refrigerator (8) and a storage refrigerator (3) that are connected in sequence through pipelines to form a loop, and the pipeline’s There is ice slurry (6) inside the pipeline, and the characteristics are: the pump is a booster pump (1); the pressure of the ice slurry (6) located in the liquid storage tank (4) and the refrigeration pipe (2) 0.1MPa to 4MPa, and the temperature of the ice slurry (6) near the jet outlet of the refrigeration pipe (2) is -5°C to 4°C; the jet outlet of the refrigeration pipe (2) is equipped with a A throttle valve for the pressure of the ice slurry (6) in the box (4) and the refrigeration pipe (2); the liquid storage tank (4) is provided with a one-way input device that can feed gas or liquid in one direction. 2. The continuous binary ice refrigerator according to claim 1, characterized in that: said one-way input device feeds carbon dioxide or a liquid in which carbon dioxide is dissolved at a pressure of 0.1 MPa to 4 MPa. 3. The continuous binary ice refrigerator according to claim 1, characterized in that: the inner side of the storage bin (3) is provided with a spiral scraper (5), and the injection direction of the throttle valve is toward the The part where the spiral scraper (5) is in contact with the storage bin (3); the spiral scraper (5) is connected to the motor (31) through the transmission shaft (31a). 4. The continuous binary ice refrigerator according to claim 3, characterized in that: said spiral scraper (5) has at least two scraper blades (52) arranged radially; said scraper blade ( 52) A knife edge (52a) and a sharp rectification angle (52b) opposite to the knife edge (52a) position are formed; the knife body of the scraper blade (52) is arc-shaped. 5. The continuous binary ice refrigerator according to claim 1, characterized in that: the refrigerating pipe (2) is a sleeve structure, and there is a heat sink between the inner tube and the outer tube of the sleeve structure. exchanged low temperature heat exchange fluid (8a), and the freezing point of the low temperature heat exchange fluid (8a) is lower than the freezing point of the ice slurry (6).

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