Multi-stage layered heat exchange structure of condenser

Abstract

The utility model relates to the technical field of evaporative condensers, and discloses a multi-stage layered heat exchange structure of a condenser, which comprises a shell, a mounting plate is fixedly connected to the inner wall of the shell, a pre-cooling heat exchange coil is fixedly connected to the side wall of the mounting plate, and the pre-cooling heat exchange coil is fixedly connected to the inner wall of the shell. The side wall of the mounting plate is fixedly connected with an evaporation heat exchange coil pipe, and a spraying assembly is arranged on the side wall of the mounting plate. According to the multi-stage layered heat exchange structure of the condenser, side spraying can cover the whole vertical face of the coil pipe, the heat exchange difference between the upper layer and the lower layer is reduced, the overall cooling effect is more uniform, the vertical pipe rotates around the axis of the vertical pipe, multi-angle spraying is achieved by covering a larger range, cooling is more uniform, and then the evaporation area is increased; one part of water is sprayed to the pre-cooling heat exchange coil pipe through the spraying holes, so that a refrigerant is cooled in advance or partially liquefied, two-stage condensation is formed, the working pressure of the evaporation coil pipe is reduced, and the condensation efficiency of the whole machine is further improved.

Description

Technical Field

[0001] This utility model relates to the field of evaporative condenser technology, specifically a multi-stage layered heat exchange structure for a condenser. Background Technology

[0002] Evaporative condensers utilize water evaporation and forced air circulation to remove condensation heat, thereby cooling the high-temperature, high-pressure superheated steam discharged from the compressor, causing the steam to condense into liquid and be discharged. They are widely used in industries such as petrochemicals, light industry, pharmaceuticals, and food refrigeration. A high-efficiency evaporative condenser is made of high-quality galvanized carbon steel, ensuring reliable operation and a long service life. Furthermore, evaporative condensers operate through their own independent circulating cooling system, unaffected by other equipment, which is beneficial for equipment maintenance and environmental protection, and offers excellent water and energy savings.

[0003] According to a public announcement of a multi-stage heat exchange evaporative condenser (Announcement No.: CN119321633B), the above application includes a shell, with an air inlet grille on the inner wall of the shell. The shell contains an evaporative heat exchange coil, a spray element, and a pre-cooling heat exchange coil. The spray element is located above the evaporative heat exchange coil, and the pre-cooling heat exchange coil is located above the spray element and is connected to the evaporative heat exchange coil. An induced draft fan is provided at the top of the shell.

[0004] However, in actual use, the sprayed water first comes into contact with the uppermost evaporation heat exchange tube. As the water flows through the upper heat exchange tube, the temperature rises and the water volume decreases. When it reaches the lower heat exchange tube, the water temperature is even higher and the coverage is more uneven, resulting in a significant decrease in the cooling efficiency of the lower heat exchange tube. In view of this, we propose a multi-stage layered heat exchange structure for the condenser. Utility Model Content

[0005] The purpose of this invention is to provide a multi-stage layered heat exchange structure for a condenser to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage layered heat exchange structure for a condenser, comprising a shell, an mounting plate fixedly connected to the inner wall of the shell, a pre-cooling heat exchange coil fixedly connected to the side wall of the mounting plate, an evaporating heat exchange coil fixedly connected to the side wall of the mounting plate, and a spray assembly provided on the side wall of the mounting plate, the spray assembly comprising:

[0007] A water pump, wherein an inlet pipe is fixedly connected to the input end of the water pump and a horizontal pipe is fixedly connected to the output end of the water pump;

[0008] A vertical pipe with a groove on its side wall, a spiral coil fixedly connected to the side wall of the vertical pipe, and spray holes on the side wall of the vertical pipe.

[0009] Steel balls, which are movably connected to the side wall of the vertical pipe.

[0010] Preferably, the top of the housing is provided with an exhaust vent, and an exhaust fan is fixedly connected to the inner wall of the housing to exhaust heat from the housing.

[0011] Preferably, the water pump is fixedly connected to the side wall of the shell, the bottom of the shell is a circulating water collection tank, the horizontal pipe is located between the precooling heat exchange coil and the evaporating heat exchange coil, and the precooling heat exchange coil is located directly above the evaporating heat exchange coil.

[0012] Preferably, the vertical tube and the horizontal tube are rotatably connected, and the slot is opened in the vertical tube inside the horizontal tube.

[0013] Preferably, one end of the spiral coil is located on the inner wall of the vertical pipe, the other end of the spiral coil is located on the outer wall of the vertical pipe, and the spray hole is located on one side of the precooling heat exchange coil.

[0014] Preferably, the number of steel balls is set in several groups, and the several groups of steel balls are movably connected to the inner wall of the horizontal tube. The steel balls are located between the horizontal tube and the vertical tube, which transforms the sliding friction between the horizontal tube and the vertical tube into rolling friction, making the horizontal tube easier to rotate.

[0015] Preferably, a filter screen is fixedly connected to the inner wall of the slot, and the filter screen is located inside the vertical pipe.

[0016] Compared with the prior art, this utility model provides a multi-stage layered heat exchange structure for a condenser, which has the following beneficial effects:

[0017] 1. The multi-stage layered heat exchange structure of this condenser, through the set spray components, allows the side spray to cover the entire vertical surface of the coil, reducing the heat exchange difference between the upper and lower layers and achieving a more uniform overall cooling effect. Water is sprayed out tangentially from multiple spiral coils, generating a reaction force. This torque acts on the vertical tube, causing it to rotate around its own axis, covering a larger area to achieve multi-angle spraying, more uniform cooling, eliminating dead corners and cooling blind spots, thereby increasing the evaporation area and improving heat exchange efficiency. A portion of the water is sprayed through the spray holes onto the pre-cooling heat exchange coil, pre-cooling or partially liquefying the refrigerant, forming two-stage condensation, which is more efficient and stable than single-stage heat exchange, reducing the working pressure of the evaporation coil, and thus improving the overall condensation efficiency of the unit.

[0018] 2. The multi-stage layered heat exchange structure of this condenser, through the installed filter screen, prevents dust and other impurities carried in the cooling water from impacting the surface of the pre-cooling heat exchange coil and the evaporation heat exchange coil, reducing surface wear. At the same time, due to the rotation of the vertical tube, the filter screen can generate a periodic scouring force when tilted in the direction of water flow, washing away impurities on the surface of the filter screen, realizing the self-cleaning function of the filter screen and reducing maintenance workload. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0020] Figure 2 This is a schematic diagram of the main cross-sectional structure of the present utility model;

[0021] Figure 3 This is a schematic diagram of the spray assembly structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the horizontal tube of this utility model;

[0023] Figure 5 This utility model Figure 4 Schematic diagram of the structure of region A in the middle;

[0024] Figure 6 This is a schematic diagram of the cross-sectional structure of the vertical pipe of this utility model;

[0025] Figure 7 This utility model Figure 6 Schematic diagram of the structure of region B in the middle;

[0026] Figure 8 This utility model Figure 6 Schematic diagram of the structure of region C.

[0027] In the diagram: 1. Shell; 2. Exhaust vent; 3. Exhaust fan; 4. Mounting plate; 5. Pre-cooling heat exchange coil; 6. Evaporative heat exchange coil; 7. Spray assembly; 701. Water pump; 702. Water inlet pipe; 703. Horizontal pipe; 704. Vertical pipe; 705. Groove; 706. Spiral coil; 707. Spray hole; 708. Steel ball; 8. Filter screen. Detailed Implementation

[0028] like Figures 1-7 As shown, this utility model provides a technical solution: a multi-stage layered heat exchange structure for a condenser, including a shell 1, an mounting plate 4 fixedly connected to the inner wall of the shell 1, a pre-cooling heat exchange coil 5 fixedly connected to the side wall of the mounting plate 4, an evaporating heat exchange coil 6 fixedly connected to the side wall of the mounting plate 4, and a spray assembly 7 provided on the side wall of the mounting plate 4. The spray assembly 7 includes a water pump 701, a water inlet pipe 702, a horizontal pipe 703, a vertical pipe 704, a slot 705, a spiral coil 706, spray holes 707, and steel balls 708.

[0029] In one embodiment of this utility model, a water pump 701 is fixedly connected to the side wall of the housing 1. The input end of the water pump 701 is fixedly connected to a water inlet pipe 702, and the output end of the water pump 701 is fixedly connected to a horizontal pipe 703. The bottom of the interior of the housing 1 is a circulating water collection tank. The horizontal pipe 703 is located between the precooling heat exchange coil 5 and the evaporating heat exchange coil 6. The precooling heat exchange coil 5 is located directly above the evaporating heat exchange coil 6.

[0030] The vertical pipe 704 is rotatably connected to the horizontal pipe 703. A groove 705 is provided on the side wall of the vertical pipe 704, which is located inside the horizontal pipe 703. A spiral coil 706 is fixedly connected to the side wall of the vertical pipe 704, and spray holes 707 are provided on the side wall of the vertical pipe 704.

[0031] One end of the spiral coil 706 is located on the inner wall of the vertical tube 704, and the other end of the spiral coil 706 is located on the outer wall of the vertical tube 704. The spray hole 707 is located on one side of the precooling heat exchange coil 5.

[0032] The steel ball 708 is movably connected to the side wall of the vertical tube 704. Several sets of steel balls 708 are provided. Several sets of steel balls 708 are movably connected to the inner wall of the horizontal tube 703. The steel balls 708 are located between the horizontal tube 703 and the vertical tube 704, which transforms the sliding friction between the horizontal tube 703 and the vertical tube 704 into rolling friction, making the horizontal tube 703 easier to rotate.

[0033] The top of the housing 1 is provided with an exhaust vent 2, and an exhaust fan 3 is fixedly connected to the inner wall of the housing 1. The exhaust fan 3 exhausts the heat inside the housing 1.

[0034] Pump 701 draws circulating water from the circulating water collection tank into the horizontal pipe 703, allowing cooling water to enter the vertical pipe 704 through the slot 705. A portion of the cooling water is sprayed out through the spiral coil 706 onto the evaporative heat exchange coil 6. Since the vertical pipe 704 is perpendicular to the horizontal pipe 703 and the spiral coil 706 is located to the side of the evaporative heat exchange coil 6, the cooling water can be sprayed onto the outer surface of the evaporative heat exchange coil 6. The side spray can cover the entire vertical surface of the coil, reducing the heat exchange difference between the upper and lower layers and achieving a more uniform overall cooling effect.

[0035] Water is sprayed out tangentially from multiple spiral coils 706. Since the direction of these spiral coils 706 is at a certain angle to the axis of the vertical tube 704, a reaction force is generated. This torque acts on the vertical tube 704, causing it to rotate around its own axis, covering a larger area to achieve multi-angle spraying, more uniform cooling, eliminating dead corners and cooling blind spots, thereby increasing the evaporation area and improving heat exchange efficiency.

[0036] A portion of the water is sprayed through the spray nozzle 707 onto the pre-cooling heat exchange coil 5, which cools the refrigerant in advance or partially liquefies it, forming two-stage condensation. This is more efficient and stable than single-stage heat exchange, reduces the working pressure on the evaporator coil, and thus improves the overall condensation efficiency of the unit.

[0037] In addition, a filter screen 8 is fixedly connected to the inner wall of the slot 705. The filter screen 8 is located inside the vertical pipe 704. Since the cooling water is circulated, it may carry dust and other impurities during the circulation process. The filter screen 8 blocks the dust. If the surfaces of the precooling heat exchange coil 5 and the evaporating heat exchange coil 6 are hit by dirt and particles for a long time, it will aggravate surface wear. Filtered water can effectively reduce these risks, extend the life of key components, and reduce the number of maintenance and replacements. At the same time, due to the rotation of the vertical pipe 704, the filter screen 8 can generate a periodic scouring force when tilted in the direction of water flow, which washes away the impurities on the surface of the filter screen 8, realizing the self-cleaning function of the filter screen 8, reducing maintenance workload, and extending the service life of the filter screen 8.

[0038] In this invention, during use, the water pump 701 draws circulating water from the circulating water collection tank into the horizontal pipe 703, allowing cooling water to enter the vertical pipe 704 through the slot 705. A portion of the cooling water is sprayed out through the spiral coil 706, onto the evaporative heat exchange coil 6, ensuring the cooling water reaches the outer surface of the evaporative heat exchange coil 6. The side spray can cover the entire vertical surface of the coil, reducing the heat exchange difference between the upper and lower layers. Water is sprayed tangentially from multiple spiral coils 706. Since the direction of these spiral coils 706 is at a certain angle to the axis of the vertical pipe 704, a reaction force is generated. This torque acts on the vertical pipe 704, causing it to rotate around its own axis, covering a larger area to achieve multi-angle spraying and more uniform cooling. A portion of the water is sprayed through the spray hole 707 onto the pre-cooling heat exchange coil 5, pre-cooling or partially liquefying the refrigerant to form two-stage condensation, which is more efficient and stable than single-stage heat exchange, reducing the working pressure on the evaporative coil.

[0039] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A multi-stage layered heat exchange structure for a condenser, comprising a shell (1), characterized in that: An installation plate (4) is fixedly connected to the inner wall of the housing (1), a pre-cooling heat exchange coil (5) is fixedly connected to the side wall of the installation plate (4), an evaporating heat exchange coil (6) is fixedly connected to the side wall of the installation plate (4), and a spray assembly (7) is provided on the side wall of the installation plate (4). The spray assembly (7) includes: A water pump (701) is fixedly connected to an inlet pipe (702) at its input end and to a horizontal pipe (703) at its output end. A vertical pipe (704) has a slot (705) on its side wall, a spiral coil (706) is fixedly connected to the side wall of the vertical pipe (704), and a spray hole (707) is provided on the side wall of the vertical pipe (704). Steel ball (708) is movably connected to the side wall of the vertical tube (704).

2. The multi-stage layered heat exchange structure of a condenser according to claim 1, characterized in that: The top of the housing (1) is provided with an exhaust vent (2), and an exhaust fan (3) is fixedly connected to the inner wall of the housing (1).

3. The multi-stage layered heat exchange structure of a condenser according to claim 1, characterized in that: The water pump (701) is fixedly connected to the side wall of the housing (1). The bottom of the housing (1) is a circulating water collection pool. The horizontal pipe (703) is located between the precooling heat exchange coil (5) and the evaporating heat exchange coil (6). The precooling heat exchange coil (5) is located directly above the evaporating heat exchange coil (6).

4. The multi-stage layered heat exchange structure of a condenser according to claim 1, characterized in that: The vertical tube (704) is rotatably connected to the horizontal tube (703), and the slot (705) is opened in the vertical tube (704) inside the horizontal tube (703).

5. The multi-stage layered heat exchange structure of a condenser according to claim 1, characterized in that: One end of the spiral coil (706) is located on the inner wall of the vertical pipe (704), and the other end of the spiral coil (706) is located on the outer wall of the vertical pipe (704). The spray hole (707) is located on one side of the precooling heat exchange coil (5).

6. The multi-stage layered heat exchange structure of a condenser according to claim 1, characterized in that: The number of steel balls (708) is set in several groups, and the several groups of steel balls (708) are movably connected to the inner wall of the horizontal tube (703).

7. The multi-stage layered heat exchange structure of a condenser according to claim 1, characterized in that: A filter screen (8) is fixedly connected to the inner wall of the slot (705), and the filter screen (8) is located inside the vertical pipe (704).

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