Large industrial tube ice machine

Abstract

The utility model discloses a large-scale industrial tube ice machine which comprises an evaporator, a liquid supply pipe, a shell and tube heat exchanger, a compressor, a gas return pipe, a gas-liquid separator, a condenser and a liquid storage device, the outer circumferential surface of the evaporator is fixedly connected with a first cylinder groove and a second cylinder groove, the first cylinder groove is located above the second cylinder groove, and the second cylinder groove is located above the first cylinder groove. A main air pipe is fixedly connected below the evaporator, a first connecting pipe is fixedly connected between the main air pipe and the second cylinder groove, a second connecting pipe is fixedly connected between the main air pipe and the first cylinder groove, and a third connecting pipe is fixedly connected between the main air pipe and the left side of the lower end of the evaporator. The shell and tube heat exchanger is arranged in the pipeline, return air from the gas-liquid separator exchanges heat with the ice melting hot air pipeline in the shell and tube heat exchanger, the proportion of liquid refrigerant in mixed refrigerant is reduced, liquid impact of the compressor is avoided, and the effect of protecting the compressor is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tube ice machines, in particular to a large industrial tube ice machine. Background Art

[0002] The tube ice machine gets its name because it produces tube-shaped ice cubes. With the continuous improvement of people's requirements for the quality of beverages, more and more catering places begin to use tube ice to improve the texture and taste of beverages. Compared with commercial ice machines, industrial ice machines have a large ice production capacity and require corresponding refrigeration systems. There are also significant differences in usage requirements, often requiring non-standard products, refrigeration, corresponding circulating water, electrical control system design, factory prefabrication, on-site assembly, etc.

[0003] However, most of the tube ice machines on the market are relatively small in size. For larger tube ice machines, because the number of heat exchange tubes inside the evaporator is relatively large and the heat exchange tubes are relatively long, the conventional hot gas defrosting on the market is prone to uneven defrosting problems, resulting in a decrease in ice production. Content of the Utility Model

[0004] The purpose of the utility model is to provide a large industrial tube ice machine. A first barrel groove and a second barrel groove are respectively arranged at the upper and lower parts of the evaporator of the tube ice machine. On the cylinder body inside the barrel groove, a hole with a diameter of 12 mm is opened every 250 mm, and they are evenly distributed in a circle. At the same time, 2 heat source steam inlets are arranged on the evaporator cylinder body. During the defrosting process, the gas that becomes medium-temperature and medium-pressure after passing through the pressure regulating valve enters the evaporator through the first barrel groove, the second barrel groove and the 2 heat source steam ports. The hot gas can evenly enter the evaporator cylinder body through multiple small holes in the barrel ring, so that the surface of the ice-making tube is heated evenly, thereby realizing uniform ice melting and defrosting, realizing thinner ice melting, and reducing energy loss. By arranging a shell-and-tube heat exchanger in the pipeline, the return gas coming out of the gas-liquid separator exchanges heat with the ice-melting hot gas pipeline inside the shell-and-tube heat exchanger, reducing the proportion of liquid refrigerant in the mixed refrigerant, avoiding liquid slugging of the compressor, and playing a role in protecting the compressor. The evaporator, liquid supply pipe, return air pipe, main air pipe, shell-and-tube heat exchanger, compressor, gas-liquid separator, condenser and liquid storage tank, and the evaporator is arranged inside the evaporator.

[0005] To achieve the above object, a large industrial tube ice machine is provided, including: an evaporator, a liquid supply pipe, a shell-and-tube heat exchanger, a compressor, a return air pipe, a gas-liquid separator, a condenser and a liquid storage tank. A first cylindrical groove and a second cylindrical groove are fixedly connected to the outer circumferential surface of the evaporator. The first cylindrical groove is located above the second cylindrical groove. A main air pipe is fixedly connected below the evaporator. A first connecting pipe is fixedly connected between the main air pipe and the second cylindrical groove. A second connecting pipe is fixedly connected between the main air pipe and the first cylindrical groove. A third connecting pipe is fixedly connected between the main air pipe and the left side of the lower end of the evaporator. A fourth connecting pipe is connected between the main air pipe and the right side of the lower end of the evaporator. A fifth connecting pipe is fixedly connected between the main air pipe and the first connecting pipe, the second connecting pipe and the third connecting pipe. A first solenoid valve is provided on the third connecting pipe. A second solenoid valve is provided on the fourth connecting pipe. A third solenoid valve is provided on the fifth connecting pipe. A liquid supply pipe is fixedly connected to the right bottom of the evaporator. A fourth solenoid valve and a throttle valve are provided on the liquid supply pipe. The end of the fifth connecting pipe away from the main air pipe is fixedly connected to a shell-and-tube heat exchanger. The air outlet end of the shell-and-tube heat exchanger is fixedly connected to a compressor. The air inlet end of the shell-and-tube heat exchanger is fixedly connected to a return air pipe. The end of the return air pipe away from the shell-and-tube heat exchanger is fixedly connected to a gas-liquid separator. The air outlet end of the compressor is fixedly connected to an air outlet pipe. The end of the air outlet pipe away from the compressor is fixedly connected to a condenser. The outlet of the condenser is connected to the liquid storage tank through a pipeline. The outlet of the liquid storage tank is fixedly connected to the liquid supply pipe through a pipeline.

[0006] According to the large industrial tube ice machine, a small hole with a diameter of 12 mm is opened every 250 mm on the cylinder body of the first cylindrical groove, and the small holes are evenly distributed in a circle. The second cylindrical groove has the same structure as the first cylindrical groove. It is convenient for hot air to enter the evaporator evenly through the small holes, so that the surface of the ice-making tube is heated evenly, thereby realizing uniform ice melting and de-icing, realizing thinner ice melting and reducing energy loss.

[0007] According to the large industrial tube ice machine, heat source steam inlets are provided on both the second cylindrical groove and the first cylindrical groove.

[0008] According to the large industrial tube ice machine, the evaporator internally contains a plurality of stainless steel sanitary tubes, and tube plates are respectively provided at both ends of the stainless steel sanitary tubes. The refrigerant enters the outer space of the tubes inside the evaporator from both ends of the tube plates respectively, so as to facilitate ice making.

[0009] According to the large industrial tube ice machine, a refrigerant return air port is provided at the top of the evaporator and is fixedly connected to the gas-liquid separator through a pipeline. A refrigerant inlet is provided at the bottom of the evaporator and is fixedly connected to the liquid storage tank through the liquid supply pipe.

[0010] According to the described large industrial tube ice machine, two heat source steam inlets are respectively arranged on the left and right sides of the bottom of the evaporator, and are fixedly connected to the third connecting pipe and the fifth connecting pipe respectively.

[0011] According to the described large industrial tube ice machine, a pressure regulating valve is arranged between the shell-and-tube heat exchanger and the air outlet end of the compressor. The high-temperature and high-pressure gaseous refrigerant coming out of the compressor becomes a medium-temperature and medium-pressure gas after passing through the pressure regulating valve and enters the evaporator.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] 1. By arranging a shell-and-tube heat exchanger in the pipeline, the return gas coming out of the gas-liquid separator exchanges heat with the ice-melting hot gas pipeline inside the shell-and-tube heat exchanger, reducing the proportion of liquid refrigerant in the mixed refrigerant, avoiding liquid slugging in the compressor, and playing a role in protecting the compressor;

[0014] 2. During ice removal, the auxiliary ice-melting hot gas can uniformly enter the evaporator through small holes, making the surface of the ice-making tube heated evenly, so as to achieve uniform ice melting and ice removal, realize thinner ice melting, and reduce energy loss.

[0015] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further illustrates the present utility model in conjunction with the drawings and embodiments;

[0017] Figure 1 It is a pipeline diagram of a large industrial tube ice machine of the present utility model.

[0018] In the figure: 1. Evaporator; 2. First cylinder groove; 3. Second cylinder groove; 4. Main air pipe; 5. First connecting pipe; 6. Second connecting pipe; 7. Third connecting pipe; 8. Fourth connecting pipe; 9. Fifth connecting pipe; 10. First solenoid valve; 11. Second solenoid valve; 12. Third solenoid valve; 13. Liquid supply pipe; 14. Fourth solenoid valve; 15. Throttle valve; 16. Shell-and-tube heat exchanger; 17. Compressor; 18. Return air pipe; 19. Air outlet pipe; 20. Gas-liquid separator; 21. Condenser; 22. Liquid storage tank. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figure 1 , the present invention provides a technical solution: a large industrial tube ice machine, including: an evaporator 1, a liquid supply pipe 13, a shell-and-tube heat exchanger 16, a compressor 17, a return air pipe 18, a gas-liquid separator 20, a condenser 21 and a liquid storage tank 22. A first cylinder groove 2 and a second cylinder groove 3 are fixedly connected to the outer circumferential surface of the evaporator 1. The first cylinder groove 2 is located above the second cylinder groove 3. A main air pipe 4 is arranged below the evaporator 1. A first connecting pipe 5 is fixedly connected between the main air pipe 4 and the second cylinder groove 3. A second connecting pipe 6 is fixedly connected between the main air pipe 4 and the first cylinder groove 2. A third connecting pipe 7 is fixedly connected between the main air pipe 4 and the left side of the lower end of the evaporator 1. A fourth connecting pipe 8 is connected between the main air pipe 4 and the right side of the lower end of the evaporator 1. A fifth connecting pipe 9 is fixedly connected between the main air pipe 4 and the first connecting pipe 5, the second connecting pipe 6 and the third connecting pipe 7. A first solenoid valve 10 is arranged on the third connecting pipe 7. A second solenoid valve 11 is arranged on the fourth connecting pipe 8. A third solenoid valve 12 is arranged on the fifth connecting pipe 9. The right bottom of the evaporator 1 is fixedly connected with a liquid supply pipe 13. A fourth solenoid valve 14 and a throttle valve 15 are arranged on the liquid supply pipe 13. The end of the fifth connecting pipe 9 far away from the main air pipe 4 is fixedly connected with a shell-and-tube heat exchanger 16. The air outlet end of the shell-and-tube heat exchanger 16 is fixedly connected with a compressor 17. A pressure regulating valve is arranged between the shell-and-tube heat exchanger 16 and the air outlet end of the compressor 17. The air inlet end of the shell-and-tube heat exchanger 16 is fixedly connected with a return air pipe 18. The end of the return air pipe 18 far away from the shell-and-tube heat exchanger 16 is fixedly connected with a gas-liquid separator 20. The return air coming out of the gas-liquid separator 20 exchanges heat with the ice melting hot air pipeline inside the shell-and-tube heat exchanger 16, reducing the proportion of liquid refrigerant in the mixed refrigerant and avoiding liquid slugging of the compressor 17, playing a role in protecting the compressor 17. The air outlet end of the compressor 17 is fixedly connected with an air outlet pipe 19. The end of the air outlet pipe 19 far away from the compressor 17 is fixedly connected with a condenser 21. The outlet of the condenser 21 is connected to the liquid storage tank 22 through a pipeline. The outlet of the liquid storage tank 22 is fixedly connected with the liquid supply pipe 13 through a pipeline.

[0021] On the cylinder body of the first cylinder groove 2, there is a small hole with a diameter of 12 mm every 250 mm, and the small holes are evenly distributed in a circle. The structure of the second cylinder groove 3 is the same as that of the first cylinder groove 2. Heat source steam inlets are arranged on both the second cylinder groove 3 and the first cylinder groove 2. On the left and right sides of the bottom of the evaporator 1, there are two heat source steam inlets respectively, which are fixedly connected to the third connecting pipe 7 and the fifth connecting pipe 9 respectively, facilitating the uniform entry of hot air into the evaporator 1 through the small holes, enabling the surface of the ice-making pipe to be heated evenly, thereby realizing uniform ice melting and ice shedding, achieving thinner ice melting, and reducing energy loss.

[0022] The interior of the evaporator 1 contains multiple stainless steel sanitary tubes. Tube plates are provided at both ends of the stainless steel sanitary tubes. A refrigerant return port is arranged at the top of the evaporator 1 and is fixedly connected to the gas-liquid separator 20 through a pipeline. A refrigerant inlet is arranged at the bottom of the evaporator 1 and is fixedly connected to the liquid storage tank 22 through the liquid supply pipe 13. The refrigerant enters the outer space of the tubes inside the evaporator 1 through both ends of the tube plates respectively, thus facilitating ice making. When ice shedding is carried out, the high-temperature and high-pressure gaseous refrigerant coming out of the compressor 17 becomes medium-temperature and medium-pressure gas after passing through the pressure regulating valve and enters the evaporator 1. The temperature inside the evaporator 1 rises, causing the tube ice to gradually melt. The tubular ice falls from the vertical tubes and is cut into short ice tubes of a fixed length by the ice knife.

[0023] Working principle: During ice making, the first solenoid valve 10, the second solenoid valve 11, and the third solenoid valve 12 are closed, and the fourth solenoid valve 14 is opened. The high-temperature and high-pressure gaseous refrigerant discharged by the compressor 17 becomes high-pressure liquid refrigerant after passing through the condenser 21, and then enters the liquid storage tank 22. Subsequently, it enters the evaporator 1 under the action of the throttle valve 15 to cool the dynamic water body, and is manually throttled and sent into the evaporator 1. The water in the heat exchange tubes of the evaporator 1 exchanges heat with the low-temperature and low-pressure refrigerant. After a period of time, ice is formed in the heat exchange tubes of the water body; during ice shedding, the first solenoid valve 10, the second solenoid valve 11, and the third solenoid valve 12 are opened, and the fourth solenoid valve 14 is closed. The high-temperature and high-pressure gaseous refrigerant coming out of the compressor 17 becomes medium-temperature and medium-pressure gas after passing through the pressure regulating valve and enters the evaporator 1. The temperature inside the evaporator 1 rises. When the gas inside the evaporator 1 reaches a certain pressure, it passes through the shell-and-tube heat exchanger 16 of the gas-liquid separator 20 and exchanges heat with the ice-shedding gaseous refrigerant inside the shell-and-tube heat exchanger 16, reducing the proportion of liquid refrigerant in the mixed refrigerant and avoiding liquid slugging of the compressor 17, playing a role in protecting the compressor 17. The heat exchange causes the tube ice to gradually melt. The tubular ice falls from the vertical tubes and is cut into short ice tubes of a fixed length by the ice knife.

[0024] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art to which it pertains, various changes can also be made without departing from the gist of the present invention.

Claims

1. A large industrial tube ice machine, characterized in that: include: An evaporator (1), a liquid supply pipe (13), a shell and tube heat exchanger (16), a compressor (17), an air return pipe (18), a gas-liquid separator (20), a condenser (21) and a liquid storage tank (22); a first barrel groove (2) and a second barrel groove (3) are fixedly connected on the outer circumferential surface of the evaporator (1); the first barrel groove (2) is located above the second barrel groove (3); a main air pipe (4) is fixedly connected below the evaporator (1); a first connecting pipe (21) is fixedly connected between the main air pipe (4) and the second barrel groove (3); (5), a second connecting pipe (6) is fixedly connected between the main gas pipe (4) and the first cylinder groove (2), a third connecting pipe (7) is fixedly connected between the main gas pipe (4) and the left side of the lower end of the evaporator (1), a fourth connecting pipe (8) is connected between the main gas pipe (4) and the right side of the lower end of the evaporator (1), a fifth connecting pipe (9) is fixedly connected between the main gas pipe (4) and the first connecting pipe (5), the second connecting pipe (6) and the third connecting pipe (7), a first solenoid valve (10) is provided on the third connecting pipe (7), and The fourth connecting pipe (8) is provided with a second solenoid valve (11), the fifth connecting pipe (9) is provided with a third solenoid valve (12), a liquid supply pipe (13) is fixedly connected to the bottom of the right side of the evaporator (1), the liquid supply pipe (13) is provided with a fourth solenoid valve (14) and a throttle valve (15), the end of the fifth connecting pipe (9) away from the main air pipe (4) is fixedly connected to a shell and tube heat exchanger (16), the air outlet end of the shell and tube heat exchanger (16) is fixedly connected to a compressor (17), and the shell and tube heat exchanger (16) is fixedly connected to a compressor (17). The air inlet end of the heat exchanger (16) is fixedly connected to a return air pipe (18), the end of the return air pipe (18) away from the shell and tube heat exchanger (16) is fixedly connected to a gas-liquid separator (20), the air outlet end of the compressor (17) is fixedly connected to an air outlet pipe (19), the end of the air outlet pipe (19) away from the compressor (17) is fixedly connected to a condenser (21), the outlet of the condenser (21) is connected to a liquid reservoir (22) via a pipeline, and the outlet of the liquid reservoir (22) is fixedly connected to a liquid supply pipe (13) via a pipeline.

2. A large industrial tube ice machine according to claim 1, characterized in that: A small hole with a diameter of 12 mm is opened on the cylinder body of the first cylinder groove (2) at intervals of 250 mm, and the small holes are evenly distributed in a circle. The structure of the second cylinder groove (3) is consistent with that of the first cylinder groove (2).

3. A large industrial tube ice machine according to claim 1, characterized in that: The evaporator (1) contains a plurality of stainless steel sanitary tubes, and tube sheets are respectively provided at both ends of the stainless steel sanitary tubes.

4. A large industrial tube ice machine according to claim 1, characterized in that: The top of the evaporator (1) is provided with a refrigerant return port, and is fixedly connected to the gas-liquid separator (20) via a pipeline; the bottom of the evaporator (1) is provided with a refrigerant inlet, and is fixedly connected to the liquid storage tank (22) via a liquid supply pipe (13).

5. A large industrial tube ice machine according to claim 1, characterized in that: Two heat source steam inlets are respectively arranged on the left and right sides of the bottom of the evaporator (1), and are respectively fixedly connected to the third connecting pipe (7) and the fifth connecting pipe (9).

6. A large industrial tube ice machine according to claim 1, characterized in that: A pressure regulating valve is provided between the shell and tube heat exchanger (16) and the air outlet of the compressor (17).

7. A large industrial tube ice machine according to claim 1, characterized in that: The second barrel trough (3) and the first barrel trough (2) are both provided with a heat source steam inlet.

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