Flooded tube ice evaporator

Abstract

The utility model belongs to the technical field of flooded tube ice evaporators, and particularly relates to a flooded tube ice evaporator which comprises a shell, a water tank is arranged on one side of the shell, a refrigerant liquid inlet pipe and a refrigerant gas exhaust pipe are arranged on the shell, a partition plate is arranged in the shell, and the shell is divided into a heat exchange area and a gas exhaust area by the partition plate. The gas exhaust area comprises two first supporting plates connected with the partition plate and a second supporting plate connected with the inner wall of the shell, the second supporting plate is arranged between the two first supporting plates, and the two first supporting plates and the second supporting plate are arranged in a staggered mode. And gas guide plates are arranged on one sides of the two first supporting plates and the second supporting plate, and gas guide grooves are formed in the two first supporting plates and the second supporting plate. The device can improve the separation of gas and liquid, prevents the liquid impact phenomenon, and is low in cost, simple in structure and convenient for subsequent maintenance.

Description

Technical Field

[0001] The utility model belongs to the technical field of a liquid-filled tube ice evaporator, and specifically relates to a liquid-filled tube ice evaporator. Background Art

[0002] In the field of refrigeration technology, the full-liquid tube ice evaporator is an important refrigeration equipment component. Its working principle is mainly based on the heat exchange between the refrigerant liquid and the flowing water. The refrigerant liquid absorbs the heat of the water to achieve the refrigeration effect. The tube ice evaporator usually adopts the design of the shell and tube evaporator. The internal structure is similar to the structure of the ordinary shell and tube heat exchanger. The interior of the shell and tube evaporator is composed of multiple vertical parallel steel pipes. These steel pipes are ice making pipes. Water flows along the inner wall of these steel pipes. At the same time, there is a refrigerant (such as low-temperature fluid, refrigerant, coolant, etc.) flowing outside, exchanging heat with the water in the tube, so that the water gradually cools down and turns into ice. When the ice layer reaches the predetermined thickness, the water flow will automatically stop. Subsequently, the hot gas of the refrigerant enters the evaporator, causing the ice layer to melt and fall off. At the bottom of the shell and tube ice evaporator, there is an ice cutting device that can cut the tube ice into the required length.

[0003] However, during the refrigeration process, the refrigerant liquid will gradually turn into gas after absorbing heat, and may form a mixed gas containing liquid refrigerant. If this mixed gas directly enters the compressor, it will cause liquid collision inside the compressor, the so-called "liquid hammer" phenomenon, which seriously affects the normal operation of the compressor and may even cause damage to the compressor.

[0004] In the prior art, some evaporators use a simple structure to export gas, but lack effective separation measures for the droplet-state refrigerant in the gas, resulting in liquid hammer. Although other evaporators try to improve the separation effect by adding separation plates, filter screens and other structures, these structures are simple. Although the separation plates can separate gas and liquid, if the gas volume is large and the flow speed is fast, the separation effect will be poor. At the same time, if the filter screen is used for a long time, it will be blocked, resulting in poor separation effect.

[0005] To this end, we proposed a full-liquid tube ice evaporator, which can effectively improve the separation effect of gas and liquid and prevent the occurrence of liquid hammer by adopting a specific structure and design. At the same time, it has the characteristics of simple structure, low cost and easy maintenance. Utility Model Content

[0006] The purpose of this utility model is to provide a full liquid type tube ice evaporator, which can effectively improve the separation effect of gas and liquid and prevent the occurrence of liquid hammer by adopting a specific structure and design. At the same time, it has the characteristics of simple structure, low cost and convenient maintenance.

[0007] The technical solutions adopted in this utility are as follows:

[0008] A flooded tube ice evaporator comprises a shell and a water tank arranged on the shell, the shell is provided with a refrigerant liquid inlet pipe and a refrigerant gas outlet pipe, and a partition plate is arranged inside the shell, the partition plate divides the shell into a heat exchange area and a gas outlet area, and one side of the partition plate is provided with an air guide hole communicating with the heat exchange area;

[0009] The gas discharge area includes two first support plates connected to the partition plate, and a second support plate connected to the inner wall of the shell, a second support plate is arranged between the two first support plates, the two first support plates and the second support plates are arranged alternately, a gas guide plate is arranged on one side of the two first support plates and the second support plates, and a gas guide groove is arranged on the two first support plates and the second support plates;

[0010] The gas discharge area also includes a first hollow arc plate and a second hollow arc plate located on the refrigerant gas discharge pipe and connected to the inner wall of the shell, the second hollow arc plate is arranged inside the first hollow arc plate, a flow channel is arranged between the first hollow arc plate and the second hollow arc plate, and the first hollow arc plate and the second hollow arc plate are both provided with air inlets and exhaust ports, and the cavities inside the first hollow arc plate and the second hollow arc plate become smaller from left to right.

[0011] Furthermore, the first hollow arc plate, the flow channel and the bottom of the second hollow arc plate are all provided with drainage pipes, and the drainage pipes are provided with electric control valves.

[0012] Furthermore, the distance between the two first support plates and the second support plate gradually increases.

[0013] Furthermore, a heat exchange ice-making pipe and a support plate for supporting the heat exchange ice-making pipe are arranged inside the heat exchange area, a water inlet and an ice discharge port are arranged on the heat exchange ice-making pipe, and the water inlet is connected to the water tank.

[0014] Furthermore, a water inlet pipe and a water outlet pipe are provided on the water tank, and a filter screen is provided inside the water inlet pipe.

[0015] Furthermore, the air guide plate is provided with a plurality of serrated surfaces.

[0016] The technical effects achieved by this utility model are:

[0017] The refrigerant liquid enters the heat exchange area inside the shell from the refrigerant liquid inlet pipe, and at the same time, the constant temperature water enters the heat exchange area. Through the components inside the heat exchange area, the refrigerant liquid cools the flowing constant temperature water. Because the refrigerant liquid gains temperature, it generates refrigerant gas. The refrigerant gas is discharged from the refrigerant gas discharge pipe to start the next refrigeration cycle. The refrigerant gas may not be completely vaporized, and droplets of refrigerant will be formed, which are mixed in the refrigerant gas. In this process, the refrigerant gas floats upward from the heat exchange area, enters the gas discharge area through the air guide holes, and then first contacts the air guide plate on one of the first support plates, and collides with the gas to separate the gas from the liquid. When the gas flows, it will enter the gas guide groove, thereby increasing the impact area and improving the separation effect. Then the gas passes through the second support plate and another first support plate, thereby improving the separation effect of liquid and gas. Although the gas enters the cavity of the first hollow arc plate through the air inlet, the gas flow rate decreases due to the increasing size of the inner cavity flowing in the cavity, thereby improving the separation effect of gas and liquid again. Then, through the first hollow arc plate exhaust pipe, flow channel, the air inlet of the second hollow arc plate and the exhaust port of the second hollow arc plate, the separation effect of gas and liquid is improved again, thereby preventing gas with liquid from entering the compressor and causing liquid hammer. The device can improve the separation of gas and liquid, prevent the phenomenon of liquid hammer, and has low cost, simple structure and is easy to maintain later. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a side view of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the second support plate of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the first arc-shaped hollow plate of the utility model.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Shell; 2. Refrigerant liquid inlet pipe; 3. Refrigerant gas outlet pipe; 4. Partition plate; 5. Heat exchange area; 6. Gas outlet area; 7. Air guide hole; 8. First support plate; 9. Second support plate; 10. Air guide plate; 14. Gas guide groove; 11. First hollow arc plate; 12. Second hollow arc plate; 13. Flow channel; 15. Air inlet; 16. Air outlet; 17. Heat exchange ice-making pipe; 18. Water inlet; 19. Ice discharge port; 20. Serrated surface; 21. Water tank; 22. Water inlet pipe; 23. Drain pipe. DETAILED DESCRIPTION

[0024] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0025] like Figure 1-4 As shown, the technical solution adopted by the utility model is specifically as follows: a full-liquid tube ice evaporator, comprising a shell 1 and a water tank 21 arranged on the shell, the shell 1 is provided with a refrigerant liquid inlet pipe 2 and a refrigerant gas outlet pipe 3, and a partition plate 4 is arranged inside the shell 1, the partition plate 4 divides the shell 1 into a heat exchange area 5 and a gas outlet area 6, and a gas guide hole 7 communicating with the heat exchange area 5 is opened on one side of the partition plate 4;

[0026] The gas discharge area 6 includes two first support plates 8 connected to the partition plate 4, and a second support plate 9 connected to the inner wall of the shell 1. The second support plate 9 is arranged between the two first support plates 8. The two first support plates 8 and the second support plates 9 are arranged alternately. A gas guide plate 10 is arranged on one side of the two first support plates 8 and the second support plates 9, and a gas guide groove 14 is arranged on the two first support plates 8 and the second support plates 9.

[0027] The gas discharge area 6 also includes a first hollow arc plate 11 and a second hollow arc plate 12 connected to the inner wall of the shell 1 and located on the refrigerant gas discharge pipe 3. The second hollow arc plate 12 is arranged inside the first hollow arc plate 11. A flow channel 13 is arranged between the first hollow arc plate 11 and the second hollow arc plate 12. The first hollow arc plate 11 and the second hollow arc plate 12 are both provided with an air inlet 15 and an exhaust port 16. The cavities inside the first hollow arc plate 11 and the second hollow arc plate 12 become smaller from left to right.

[0028] Its working principle is as follows: the refrigerant liquid enters the heat exchange area 5 inside the shell 1 from the refrigerant liquid inlet pipe 2, and at the same time, the constant temperature water enters the heat exchange area 5. Through the components inside the heat exchange area 5, the refrigerant liquid cools the flowing constant temperature water, so that the pipe inside the heat exchange area 5 freezes. The refrigerant liquid generates refrigerant gas because of the temperature. The refrigerant gas is discharged from the refrigerant gas discharge pipe 3 to start the next refrigeration cycle. The refrigerant gas may not be completely vaporized, and droplets of refrigerant will be formed, which are mixed in the refrigerant gas. In this process, the refrigerant gas floats upward from the heat exchange area 5, enters the gas discharge area 6 through the air guide hole 7, and then first contacts the air guide plate 10 on one of the first support plates 8, and collides with the gas, so that the gas Separation from liquid, when the gas flows, it will enter the gas guide groove 14, thereby increasing the impact area and improving the separation effect, and then the gas passes through the second support plate 9 and another first support plate 8, thereby improving the effect of separating liquid from gas, although the gas enters the cavity through the air inlet 15 of the first hollow arc plate 11, because the inner cavity flowing in the cavity is getting larger and larger, the gas flow rate is reduced, so that the effect of separating gas from liquid is improved again, and then through the exhaust pipe of the first hollow arc plate 11, the flow channel 13, the air inlet 15 of the second hollow arc plate 12 and the exhaust port 16 of the second hollow arc plate 12, the effect of separating gas from liquid is improved again, thereby preventing the gas containing liquid from entering the compressor and causing the phenomenon of liquid hammer. The device can improve the separation of gas and liquid, prevent the phenomenon of liquid hammer, and has low cost, simple structure, and is easy to maintain later.

[0029] Among them, the first hollow arc plate 11, the flow channel 13 and the second hollow arc plate 12 are all provided with drain pipes at the bottom, and an electric control valve is provided on the drain pipe. The discharge of condensed liquid is controlled by the electric control valve, so as not to affect the operation of the first hollow arc plate 11, the flow channel 13 and the second hollow arc.

[0030] It should be noted that the electric control valve model ZJHM-680 electric liquid level control valve is suitable for a variety of liquid media and belongs to the prior art, so no further elaboration is made here.

[0031] The distance between the two first support plates 8 and the second support plate 9 is increasingly larger, and such an arrangement can reduce the gas flow, thereby improving the effect of separating gas from liquid.

[0032] A heat exchange ice-making pipe 17 and a support plate for supporting the heat exchange ice-making pipe 17 are arranged inside the heat exchange area 5. A water inlet 18 and an ice discharge port 19 are arranged on the heat exchange ice-making pipe 17. The water inlet 18 is connected to the water tank 21. When ice making is being performed, the water inside the water tank 21 enters the heat exchange ice-making pipe 17 through the water inlet 18. When the refrigerant liquid enters, the water inside the heat exchange ice-making pipe 17 is cooled. The refrigerant liquid exchanges heat with the water in the heat exchange ice-making pipe 17 on the outside. Since the temperature of the refrigerant liquid is much lower than the temperature of the water, the water begins to cool down rapidly on the inner wall of the heat exchange ice-making pipe 17 and gradually freezes. The freezing process starts from the inner wall of the heat exchange ice-making tube 17 and proceeds toward the center of the heat exchange ice-making tube 17 until tube ice is formed. When the ice layer reaches a predetermined thickness, the system will detect and automatically stop the entry of water to prevent the ice layer from being too thick. Next, the refrigerant hot air in the shell 1 is introduced to melt and fall off the part of the ice layer that contacts the inner wall of the heat exchange ice-making tube 17. After the ice layer melts and falls off, the ice cutting mechanism at the bottom of the evaporator will operate to cut the tube ice into a set length and size. After that, the cut tube ice will be output through the ice outlet 19 for use.

[0033] It should be noted that the above description is about the formation process of the tube ice inside the shell 1. The control system, ice cutting mechanism and other components provided at the same time belong to the prior art and will not be described in detail here.

[0034] The water tank 21 is provided with a water inlet pipe 22 and a drain pipe 23. A filter screen is provided inside the water inlet pipe 22.

[0035] Water enters the water tank 21 through the water inlet pipe 22 , and the water can be filtered through the filter net to prevent impurities from entering the inside of the housing 1 , and the water in the water tank 21 is discharged through the drain pipe 23 .

[0036] The air guide plate 10 is provided with a plurality of serrated surfaces 20 , and the serrated surfaces 20 can improve the effect of gas impact separation.

[0037] The working principle of the utility model is as follows: the refrigerant liquid enters the heat exchange area 5 inside the shell 1 from the refrigerant liquid inlet pipe 2, and at the same time, the constant temperature water enters the heat exchange area 5. Through the components inside the heat exchange area 5, the refrigerant liquid cools the flowing constant temperature water. Because the refrigerant liquid gains temperature, refrigerant gas is generated. The refrigerant gas is discharged from the refrigerant gas discharge pipe 3 to start the next refrigeration cycle. The refrigerant gas may not be completely vaporized, and droplets of refrigerant will be formed, which are mixed in the refrigerant gas. In this process, the refrigerant gas floats upward from the heat exchange area 5, enters the gas discharge area 6 through the air guide hole 7, and then first contacts the air guide plate 10 on one of the first support plates 8, and separates the gas from the liquid by colliding with the gas. When the gas flows, it will enter the gas guide groove 14, thereby increasing the impact area and improving the separation effect. Then the gas passes through the second support plate 9 and another first support plate 8, thereby improving the effect of separating the liquid from the gas. Although the gas enters the cavity of the first hollow arc plate 11 through the air inlet 15, the gas flow rate decreases due to the increasing size of the inner cavity flowing in the cavity, thereby improving the effect of separating the gas from the liquid again. Then, through the exhaust pipe of the first hollow arc plate 11, the flow channel 13, the air inlet 15 of the second hollow arc plate 12 and the exhaust port 16 of the second hollow arc plate 12, the effect of separating the gas from the liquid is improved again, thereby preventing the gas with liquid from entering the compressor and causing the phenomenon of liquid hammer. The device can improve the separation of gas and liquid, prevent the phenomenon of liquid hammer, and has low cost, simple structure, and is easy to maintain later.

[0038] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A flooded tube ice evaporator, comprising a shell (1) and a water tank (21) arranged on the shell, characterized in that: The shell (1) is provided with a refrigerant liquid inlet pipe (2) and a refrigerant gas outlet pipe (3), and a partition plate (4) is provided inside the shell (1), the partition plate (4) divides the shell (1) into a heat exchange area (5) and a gas outlet area (6), and a gas guide hole (7) communicating with the heat exchange area (5) is opened on one side of the partition plate (4); The gas discharge area (6) comprises two first support plates (8) connected to the partition plate (4), and a second support plate (9) connected to the inner wall of the shell (1), a second support plate (9) is arranged between the two first support plates (8), the two first support plates (8) and the second support plates (9) are arranged alternately, a gas guide plate (10) is arranged on one side of the two first support plates (8) and the second support plates (9), and a gas guide groove (14) is arranged on the two first support plates (8) and the second support plates (9); The gas discharge area (6) further comprises a first hollow arc plate (11) and a second hollow arc plate (12) located on the refrigerant gas discharge pipe (3) and connected to the inner wall of the shell (1); the second hollow arc plate (12) is arranged inside the first hollow arc plate (11); a flow channel (13) is arranged between the first hollow arc plate (11) and the second hollow arc plate (12); an air inlet (15) and an air outlet (16) are arranged on the first hollow arc plate (11) and the second hollow arc plate (12); the cavities inside the first hollow arc plate (11) and the second hollow arc plate (12) become smaller from left to right.

2. The flooded tube ice evaporator according to claim 1, characterized in that: The first hollow arc-shaped plate (11), the flow channel (13) and the bottom of the second hollow arc-shaped plate (12) are all provided with drainage pipes, and the drainage pipes are provided with electric control valves.

3. The flooded tube ice evaporator according to claim 1, characterized in that: The distance between the two first support plates (8) and the second support plate (9) gradually increases.

4. The flooded tube ice evaporator according to claim 1, characterized in that: A heat exchange ice-making pipe (17) and a support plate for supporting the heat exchange ice-making pipe (17) are arranged inside the heat exchange area (5); a water inlet (18) and an ice discharge port (19) are arranged on the heat exchange ice-making pipe (17); and the water inlet (18) is communicated with the water tank (21).

5. The flooded tube ice evaporator according to claim 4, characterized in that: The water tank (21) is provided with a water inlet pipe (22) and a water outlet pipe (23), and a filter screen is provided inside the water inlet pipe (22).

6. The flooded tube ice evaporator according to claim 1, characterized in that: The air guide plate (10) is provided with a plurality of serrated surfaces (20).

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