Food-grade liquid cold storage tank

Abstract

The utility model discloses a food grade liquid cold storage tank, which relates to the technical field of food storage and specifically comprises a support and a Miller plate evaporator, a cold storage tank body is arranged at the top of the support, and a breather valve, a stirring structure, an inlet hole and a liquid inlet are arranged at the top of an inner cavity of the cold storage tank body. The inner cavity of the refrigeration tank body is provided with a pressurized automatic rotary cleaning CIP spray head, the stirring structure comprises a stirring rod movably connected with the top of the inner cavity of the refrigeration tank body, the top end of the stirring rod is provided with a stirring blade I, and the bottom end of the stirring rod is provided with a stirring blade II. According to the food-grade liquid refrigeration tank, manufacturing of the Miller plate evaporator and connection of the refrigeration plate and the liquid layer are achieved through the laser welding technology, the deformation probability of the inner wall of the refrigeration tank body is reduced, the smoothness and the use strength of the interior of the refrigeration tank body are guaranteed, and when the refrigeration tank is used, the refrigeration plate directly makes contact with liquid in the tank, so that the refrigeration effect is improved. The heat exchange efficiency is optimized, and the using effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of food storage technology, specifically a food-grade liquid refrigerator. Background Technology

[0002] Currently, the food industry widely adopts refrigerated tanks to store liquid foods (such as milk, juice, wine, condiments, etc.). In existing solutions, the refrigeration system of a refrigerated tank usually consists of a refrigeration unit, refrigeration pipes, and a Miller plate evaporator. Among them, the Miller plate evaporator is the core heat exchange component that directly exchanges heat with the stored liquid.

[0003] In traditional manufacturing processes, Miller plate evaporators are generally processed using spot welding technology. However, this technology has problems such as uneven weld spacing and poor weld continuity, which not only affect the structural strength of the evaporator, but also form an uneven surface on the inner wall of the tank, increasing the risk of liquid residue and bacterial growth, affecting fluid flow, and thus reducing the cooling effect of the refrigeration tank. Based on this, this application proposes a food-grade liquid refrigeration tank. Utility Model Content

[0004] This invention provides a food-grade liquid refrigeration tank, which solves the problem mentioned in the background art that the Miller plate evaporator is processed by spot welding technology, which easily forms an uneven surface on the inner wall of the tank, increasing the risk of liquid residue and bacterial growth, and reducing the cooling effect of the refrigeration tank.

[0005] This utility model provides the following technical solution: a food-grade liquid refrigerated tank, including a support and a Miller plate evaporator. The top of the support is provided with the refrigerated tank body. The top of the inner cavity of the refrigerated tank body is provided with a breather valve, a stirring structure, an inlet, and a liquid inlet. The inner cavity of the refrigerated tank body is provided with a pressurized automatic rotating cleaning CIP spray head. The stirring structure includes a stirring rod movably connected to the top of the inner cavity of the refrigerated tank body. The top of the stirring rod is provided with a stirring blade one, and the bottom of the stirring rod is provided with a stirring blade two. The refrigerated tank body is a layered design, including a liquid layer, an insulation layer, and an outer skin layer from the inside out. The Miller plate evaporator is made using laser welding technology. The cooling plate of the Miller plate evaporator is located at the bottom of the inner cavity of the refrigerated tank body and is seamlessly connected to the liquid layer through laser welding technology.

[0006] Preferably, a refrigeration unit and a control box are also provided on the top of the bracket, and the refrigeration unit is connected to the Miller plate evaporator through refrigeration pipes.

[0007] Preferably, a ladder is provided on one side of the refrigeration tank body, and a liquid outlet pipe is provided at the bottom of one side of the refrigeration tank body.

[0008] Preferably, the stirring structure further includes a servo motor, and the stirring rod is driven by the servo motor.

[0009] Preferably, the inlet end of the pressurized automatic rotating cleaning CIP spray head is connected to a cleaning pipe one or a cleaning pipe two. The cleaning pipe one is located at the top of the inner cavity of the refrigeration tank body, and the cleaning pipe two is located in the middle of the end of the refrigeration tank body away from the control box.

[0010] Preferably, a liquid circulation structure and a heat pipe are provided on the side of the inner cavity of the refrigerator body away from the stirring structure. The liquid circulation structure includes a liquid pump, the inlet end of which extends to the bottom end of the inner cavity of the refrigerator body through an inlet pipe. A filter screen is provided at the bottom end of the inlet pipe, and a spray nozzle is provided at the outlet end of the liquid pump. The evaporation section of the heat pipe is located at the bottom end of the inner cavity of the refrigerator body, and the condensation section of the heat pipe is in contact with the top of the inner cavity of the refrigerator body.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This food-grade liquid refrigeration tank utilizes laser welding technology to manufacture the Miller plate evaporator and connect the cooling plate to the liquid layer. This reduces the probability of deformation of the inner wall of the refrigeration tank, ensures the flatness and strength of the tank's interior, increases liquid flow efficiency, and allows the cooling plate to directly contact the liquid inside the tank during use, optimizing heat exchange efficiency and improving performance.

[0013] 2. This food-grade liquid refrigerator, through the setting of the stirring structure, can simultaneously cause airflow and liquid circulation within the refrigerator, which can significantly improve the heat exchange efficiency and temperature uniformity of the refrigerator, thereby enhancing its performance. Attached Figure Description

[0014] Figure 1 This is a front view of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the back of the structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0017] Figure 4 The structure of this utility model Figure 3 Diagram of looking up

[0018] Figure 5 This is a schematic cross-sectional view of the main body of the refrigerated tank of this utility model.

[0019] Figure 6 This is a schematic cross-sectional view of the refrigerated tank body of this utility model.

[0020] In the diagram: 1. Support frame; 2. Refrigeration unit; 3. Control box; 4. Refrigerated tank body; 5. Servo motor; 6. Cleaning pipe one; 7. Manhole; 8. Breathing valve; 9. Liquid inlet; 10. Liquid outlet pipe; 11. Ladder; 12. Stirring rod; 13. Stirring blade two; 14. Pressurized automatic rotating cleaning CIP spray head; 15. Stirring blade one; 16. Cleaning pipe two; 17. Liquid layer; 18. Refrigeration plate; 19. Insulation layer; 20. Outer skin layer; 21. Liquid pump; 22. Liquid inlet pipe; 23. Heat pipe; 24. Spray nozzle; 25. Miller plate evaporator. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides an embodiment: Please refer to Figures 1-6 A food-grade liquid refrigerated tank includes a support 1. A refrigeration unit 2, a control box 3, and a refrigerated tank body 4 are mounted on the top of the support 1. A Miller plate evaporator 25 is mounted on the bottom of the refrigerated tank body 4. The refrigeration unit 2 is connected to the Miller plate evaporator 25 via refrigeration pipes. In one embodiment of this application, the refrigeration unit 2 is a direct-cooling refrigeration unit as described in the prior art, and its working principle is also prior art and will not be described in detail here. The Miller plate evaporator 25 is also prior art and will not be described in detail here. During operation, the refrigeration unit 2 delivers refrigerant liquid to the Miller plate evaporator 25 via refrigeration pipes, and the Miller plate evaporator is directly used for liquid heat exchange and refrigeration.

[0023] The Miller plate evaporator 25 is manufactured using laser welding technology. The refrigerator tank body 4 has a layered design, consisting of a liquid layer 17, an insulation layer 19, and an outer skin layer 20 from the inside out. The cooling plate 18 of the Miller plate evaporator 25 is located inside the refrigerator tank body 4 and is seamlessly connected to the liquid layer 17 using laser welding technology. The outer skin layer 20 is also seamlessly connected to the outer surface of the Miller plate evaporator 25 using laser welding technology. The application of laser welding technology reduces the probability of deformation of the cooling plate 18, ensures the flatness of the inner wall of the refrigerator tank body 4, facilitates the flow of liquid inside the tank, and ensures the strength of the refrigerator tank body 4. In one embodiment of this application, the cooling plate 18, the liquid layer 17, and the outer skin layer 20 are all made of 304 stainless steel, and the insulation layer 19 is made of rigid polyurethane foam.

[0024] A stirring structure is provided at the top of the inner cavity of the refrigerator body 4. The stirring structure includes a servo motor 5 and a stirring rod 12 movably connected to the top of the inner cavity of the refrigerator body 4. The stirring rod 12 is driven by the servo motor 5. The connection method between the servo motor 5 and the stirring rod 12 is existing technology, and those skilled in the art can set it according to their needs, which is not limited here. A stirring blade 15 is provided at the top of the stirring rod 12, and a stirring blade 13 is provided at the bottom of the stirring rod 12. Both stirring blades 15 and 13 are located in the inner cavity of the refrigerator body 4. When this application is in use, when the servo motor 5 drives the stirring rod 12 to rotate, the stirring rod 12 can drive the stirring blades 15 and 13 to rotate. The stirring blade 15 can agitate the air at the top of the inner cavity of the refrigerator body 4, accelerating the air flow rate inside the refrigerator body 4. The stirring blade 13 can agitate the liquid inside the refrigerator body 4, accelerating the liquid flow, thereby increasing the liquid cooling rate.

[0025] A cleaning pipe 1 6 is installed at the top of the inner cavity of the refrigerated tank body 4, and a cleaning pipe 2 16 is installed in the middle of the end of the refrigerated tank body 4 away from the control box 3; both cleaning pipe 1 6 and cleaning pipe 2 16 are equipped with pressurized automatic rotating cleaning CIP spray heads 14 on their inner sides to facilitate cleaning of the refrigerated tank body 4.

[0026] The top of the inner cavity of the refrigerated tank body 4 is equipped with a breather valve 8, an inlet 7, and a liquid inlet 9. A ladder 11 is provided on one side of the refrigerated tank body 4, and a liquid outlet pipe 10 is provided at the bottom of the refrigerated tank body 4 on the side away from the liquid inlet 9.

[0027] In addition, a liquid circulation structure and a heat pipe 23 are provided on the side of the inner cavity of the refrigerator body 4 away from the stirring structure. The liquid circulation structure includes a liquid pump 21, the top of which contacts the top of the inner cavity of the refrigerator body 4. The inlet end of the liquid pump 21 extends to the bottom end of the inner cavity of the refrigerator body 4 through an inlet pipe 22, and a filter screen is provided at the bottom end of the inlet pipe 22. A spray nozzle 24 is provided at the outlet end of the liquid pump 21. Through the liquid circulation structure, the liquid pump 21 can raise the liquid in the refrigerator body 4 and bring it into contact with the top of the inner cavity of the refrigerator body 4, improving the liquid flow efficiency and the liquid heat exchange area, thereby increasing the liquid cooling rate. The evaporation section of the heat pipe 23 is located at the bottom end of the inner cavity of the refrigerator body 4, and the condensation section of the heat pipe 23 contacts the top of the inner cavity of the refrigerator body 4. The heat pipe 23 further improves the cooling rate of the liquid in the refrigerator body 4.

[0028] In the manufacturing process of this application, the inner wall of the refrigerator body 4 and the components installed inside the refrigerator body 4 are all made of food-grade materials. The specific materials can be set according to the requirements and are not limited here.

[0029] All electrical components involved in this application are prior art. Those skilled in the art understand their connection methods. With the help of those skilled in the art, all electrical components in this application and their compatible power supplies can be connected by wires. According to the actual situation, a suitable controller can be selected to meet the control requirements. For specific connections and control sequences, please refer to the description below. The electrical connection between each electrical component is completed in the order of operation. The detailed connection methods are well known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control.

[0030] In summary, this food-grade liquid refrigerator utilizes laser welding technology during manufacturing to achieve seamless connection between the Miller plate evaporator 25 and the cooling plate 18 and the liquid layer 17. This reduces the probability of deformation of the inner wall of the refrigerator body 4, ensuring the flatness and strength of the inner wall. During use, the servo motor 5 drives the stirring rod 12 to rotate, which in turn drives the stirring blades 15 and 13. The stirring blade 15 agitates the air inside the refrigerator body 4, promoting airflow circulation and thus improving the cooling speed and uniformity of the liquid. The stirring blade 13 agitates the surrounding liquid, accelerating the liquid flow and further improving the cooling speed and uniformity, facilitating liquid storage.

[0031] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each structure adopt conventional technical means such as bolt connection that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A food-grade liquid refrigeration tank, comprising a support (1) and a Miller plate evaporator (25), characterized in that: The top of the support (1) is provided with a refrigerator body (4). The top of the inner cavity of the refrigerator body (4) is provided with a breather valve (8), a stirring structure, an inlet (7) and a liquid inlet (9). The inner cavity of the refrigerator body (4) is provided with a pressurized automatic rotating cleaning CIP spray head (14). The stirring structure includes a stirring rod (12) that is movably connected to the top of the inner cavity of the refrigerator body (4). The top of the stirring rod (12) is provided with a stirring blade one (15), and the bottom of the stirring rod (12) is provided with a stirring blade two (13). The refrigerator body (4) is a layered design, which includes a liquid layer (17), a heat preservation layer (19) and an outer skin layer (20) from the inside to the outside. The Miller plate evaporator (25) is made by laser welding. The cooling plate (18) of the Miller plate evaporator (25) is located at the bottom of the inner cavity of the refrigerator body (4) and is seamlessly connected to the liquid layer (17) by laser welding technology.

2. The food-grade liquid refrigerator according to claim 1, characterized in that: The top of the bracket (1) is also equipped with a refrigeration unit (2) and a control box (3), and the refrigeration unit (2) is connected to the Miller plate evaporator (25) through refrigeration pipes.

3. A food-grade liquid refrigerator according to claim 1, characterized in that: A ladder (11) is provided on one side of the refrigeration tank body (4), and a liquid outlet pipe (10) is provided at the bottom of one side of the refrigeration tank body (4).

4. A food-grade liquid refrigerator according to claim 1, characterized in that: The stirring structure also includes a servo motor (5), and the stirring rod (12) is driven by the servo motor (5).

5. A food-grade liquid refrigerator according to claim 2, characterized in that: The inlet end of the pressurized automatic rotating cleaning CIP spray head (14) is connected to a cleaning pipe one (6) or a cleaning pipe two (16). The cleaning pipe one (6) is located at the top of the inner cavity of the refrigeration tank body (4), and the cleaning pipe two (16) is located in the middle of the refrigeration tank body (4) away from the control box (3).

6. A food-grade liquid refrigerator according to claim 1, characterized in that: A liquid circulation structure and a heat pipe (23) are provided on the side of the inner cavity of the refrigeration tank body (4) away from the stirring structure. The liquid circulation structure includes a liquid pump (21). The liquid inlet end of the liquid pump (21) extends to the bottom end of the inner cavity of the refrigeration tank body (4) through the liquid inlet pipe (22). A filter screen is provided at the bottom end of the liquid inlet pipe (22). A spray nozzle (24) is provided at the liquid outlet end of the liquid pump (21). The evaporation section of the heat pipe (23) is located at the bottom end of the inner cavity of the refrigeration tank body (4), and the condensation section of the heat pipe (23) is in contact with the top of the inner cavity of the refrigeration tank body (4).

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