Low-temperature cascade evaporative condenser
By introducing a guide plate and friction plate structure into the low-temperature cascade evaporative condenser, the problems of small coil contact area and scale are solved, achieving more efficient heat transfer and equipment cleaning, and improving heat exchange efficiency and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-14
AI Technical Summary
Existing low-temperature cascade evaporative condensers have coils installed symmetrically, resulting in a smaller contact area between the lower coils and the spray water. Furthermore, scale easily forms on the surface after prolonged use, affecting heat exchange efficiency.
A low-temperature cascade evaporative condenser was designed, which adopts a guide plate and friction plate structure. The guide plate ensures that the sprayed water fully contacts the coil. After spraying, the friction plate is driven by an electric screw slide to remove scale, thereby improving the contact area and cleaning effect.
It increases the contact area between the spray water and the coil, effectively removes scale, and improves heat exchange efficiency and equipment lifespan.
Smart Images
Figure CN224121443U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of condensers, and in particular to a low-temperature cascade evaporation condenser. Background Technology
[0002] A condenser, a component of a refrigeration system, is a type of heat exchanger that converts gas or vapor into liquid, rapidly transferring heat from the tubes to the surrounding air. A low-temperature cascade evaporative condenser acts as both a high-temperature evaporator and a low-temperature condenser within the system. The high-temperature refrigerant evaporates and absorbs heat within the tubes, while the low-temperature refrigerant condenses and releases heat between the tubes, thus achieving heat transfer and a phase change in the refrigerant. To improve system performance, low-temperature cascade evaporative condensers often incorporate a spray system. The sprayed water forms a uniform water film on the coil surface, significantly increasing the contact area between the water and the coil surface, allowing for greater heat absorption and more efficient heat transfer. This accelerates the refrigerant condensation rate and improves the overall efficiency of the refrigeration system. Therefore, a low-temperature cascade evaporative condenser is necessary.
[0003] In existing low-temperature cascade evaporative condensers, the coils are evenly distributed vertically during installation. Due to the symmetry of the coils, a barrier is formed, which results in a smaller contact area between the lower coils and the spray water. At the same time, scale will form on the surface of the coils during long-term use, which will affect the heat exchange efficiency of the coils. Utility Model Content
[0004] The purpose of this invention is to provide a low-temperature cascade evaporative condenser to solve the problems mentioned in the background art. In existing low-temperature cascade evaporative condensers, the coils are evenly distributed vertically during installation. Due to the symmetry of the coils, a barrier is formed, which results in a smaller contact area between the lower coils and the sprayed water. At the same time, scale will form on the surface of the coils during long-term use, which will affect the heat exchange efficiency of the coils.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-temperature cascade evaporative condenser, comprising a condenser base box, a condensing chamber fixedly installed on one side of the upper surface of the condenser base box, a spray chamber fixedly installed at the corresponding opening on the upper surface of the condensing chamber, a water collection tank fixedly placed on the lower inner surface of the condenser base box, a water outlet fixedly installed on the lower surface of the condensing chamber, a coil tube extending through and fixedly installed inside the condensing chamber, an electric lead screw slide fixedly installed on the upper surface of the spray chamber, a support frame fixedly connected to both sides of the ball nut seat of the electric lead screw slide, support plates fixedly installed at equal intervals on one side surface of the support frame, an outer ring fixedly installed at equal intervals on one side surface of the support plate, a friction plate fixedly fitted to the inner ring of the outer ring, limit grooves formed on both sides of the inner wall of the condensing chamber, sliders fixedly connected to both sides of the outer wall of the support frame, and a guide plate fixedly installed on the inner surface of the condensing chamber.
[0006] Preferably, a blower box is fixedly installed on the upper surface of the condenser bottom box, which is in contact with one side of the condenser box, and a fan is fixedly installed on the upper surface of the blower box. The upper part of the water collection box is an open structure, and the upper surface of the condenser bottom box and the lower surface of the blower box are connected.
[0007] Preferably, the water collection tank has a water outlet on its lower side surface, and the water outlet is connected to a water pump flange through a pipe that penetrates the outer wall of the condenser bottom box. A connecting pipe is connected to one side flange of the water pump, and a spray pipe is fixedly connected to one end of the connecting pipe. A nozzle is fixedly installed on the lower surface of the spray pipe.
[0008] Preferably, the nozzles are evenly distributed on one side of the spray pipe, and the nozzles are directly above the coil. The spray pipe is fixedly installed at one end of the spray chamber.
[0009] Preferably, the water outlet below the condenser box penetrates the upper surface of the condenser bottom box, and the water outlet corresponds to the opening above the water collection box.
[0010] Preferably, the friction pad is fitted onto the outer ring of the coil, and the friction pad is made of rubber brush material resistant to high and low temperatures, and the slider corresponds to the position of the limiting groove.
[0011] Preferably, the guide plate has an arc-shaped structure and is distributed on both sides of the straight section of the coil.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This low-temperature cascade evaporative condenser, through the setting of the guide plate, firstly, the arc structure of the guide plate can be well used with the spray water. When the spray water is sprayed from top to bottom, the spray water will flow downward along the surface of the guide plate. The opening at the bottom of the guide plate corresponds to the top of the coil below, which can make the spray water more fully contact the coil. Through the sequential distribution of multiple sets of guide plates, the spray water can fully contact the surface of the coil from top to bottom. Moreover, after the spraying is completed, the electric screw slide table drives the support frame to move, causing the friction plate to move along the surface of the coil, removing the scale on the surface of the coil, so that the coil can be used for a longer period of time. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall appearance and structure of the present utility model;
[0014] Figure 2 This is a schematic diagram of the interaction between the spray pipe and the nozzle of this utility model;
[0015] Figure 3 This is a schematic diagram of the structure of the condenser and coil of this utility model.
[0016] Figure 4 This is a schematic diagram of the interaction between the guide plate and the coil of this utility model;
[0017] Figure 5 This is a schematic diagram of the guide plate structure of this utility model;
[0018] Figure 6 This is a schematic diagram of the structure of the support frame and support plate of this utility model in cooperation with each other;
[0019] Figure 7 This is a schematic diagram of the structure of the condenser box and the limiting groove of this utility model.
[0020] In the diagram: 1. Condenser base box; 2. Condenser box; 3. Spray chamber; 4. Air box; 5. Water collection tank; 6. Water pump; 7. Connecting pipe; 8. Spray pipe; 9. Nozzle; 10. Water outlet; 11. Coil; 12. Electric lead screw slide; 13. Support frame; 14. Support plate; 15. Outer ring; 16. Friction plate; 17. Limiting groove; 18. Slider; 19. Guide plate; 20. Fan. 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] Please see Figure 1-7 This utility model provides a technical solution: a low-temperature cascade evaporative condenser, including a condenser base box 1, a condenser box 2 fixedly installed on one side of the upper surface of the condenser base box 1, a spray chamber 3 fixedly installed at the corresponding opening on the upper surface of the condenser box 2, a water collection tank 5 fixedly placed on the lower inner surface of the condenser base box 1, a water outlet 10 fixedly installed on the lower surface of the condenser box 2, a coil 11 penetrating and fixedly installed on the inner side of the condenser box 2, an electric screw slide 12 fixedly installed on the upper surface of the spray chamber 3, a support frame 13 fixedly connected to both sides of the ball nut seat of the electric screw slide 12, a support plate 14 fixedly installed at equal intervals on one side surface of the support frame 13, an outer ring 15 fixedly installed at equal intervals on one side surface of the support plate 14, a friction plate 16 fixedly attached to the inner ring of the outer ring 15, limit grooves 17 opened on both sides of the inner wall of the condenser box 2, sliders 18 fixedly connected to both sides of the outer wall of the support frame 13, and a guide plate 19 fixedly installed on the inner surface of the condenser box 2.
[0023] Furthermore, a blower box 4 is fixedly installed on the upper surface of the condenser bottom box 1, which is attached to one side of the condenser box 2. A fan 20 is fixedly installed on the upper surface of the blower box 4. The upper part of the water collection tank 5 is an open structure, and the upper surface of the condenser bottom box 1 and the lower surface of the blower box 4 are connected. Through the setting of the fan 20, the side of the condenser box 2 is connected to the blower box 4, the lower part of the condenser box 2 is connected to the water collection tank 5, and the fan 20 passes through the upper part of the condenser box 2. When the fan 20 rotates, it can remove the heat from the condenser box 2 and the water collection tank 5.
[0024] Furthermore, a water outlet is provided on the lower side surface of the water collection tank 5, and the water outlet is connected to the water pump 6 flange through a pipe that penetrates the outer wall of the condenser bottom box 1. A connecting pipe 7 is connected to one side flange of the water pump 6, and a spray pipe 8 is fixedly connected to one end of the connecting pipe 7. A nozzle 9 is fixedly installed on the lower surface of the spray pipe 8. Through the arrangement of the spray pipe 8 and the nozzle 9, the water pump 6 drives the spray water in the water collection tank 5 to enter the spray pipe 8 through the connecting pipe 7. The spray pipe 8 is also arranged in a ring and corresponds to the coil 11, so that the nozzle 9 can spray the center of each straight segment of the coil 11.
[0025] Furthermore, the nozzles 9 are evenly distributed on one side of the spray pipe 8, and the nozzles 9 are directly above the coil 11. The spray pipe 8 is fixedly installed at one end of the spray chamber 3. With the setting of the nozzles 9, the nozzles 9 have a conical structure, which allows for a larger spray range during spraying.
[0026] Furthermore, the outlet 10 below the condenser box 2 penetrates the upper surface of the condenser bottom box 1, and the outlet 10 corresponds to the opening above the water collection tank 5. Through the setting of the water collection tank 5, the water collection tank 5 can be used to store the water that needs to be sprayed in advance. Secondly, the water flowing down from the condenser box 2 can also be recycled into the water collection tank 5 for reuse.
[0027] Furthermore, the friction plate 16 is fitted onto the outer ring of the coil 11, and the friction plate 16 is made of rubber brush material that is resistant to high and low temperatures. The slider 18 and the limiting groove 17 are positioned accordingly. By setting the friction plate 16, the friction plate 16 is made of high and low temperature resistant material, which can adapt well to the temperature of the coil 11. At the same time, after the spraying is completed, the movement of the friction plate 16 against the surface of the coil 11 is controlled in time, and the friction generated can effectively remove the scale on the coil 11.
[0028] Furthermore, the guide plate 19 has an arc-shaped structure and is distributed on both sides of the straight section of the coil 11. With the guide plate 19 distributed on both sides of the coil 11, the dispersed spray water can be collected at the lower opening of the guide plate 19, and then the spray water will come into contact with the coil 11 below. The guide plate 19 is distributed on each straight section of the coil 11, so that the spray water can make more comprehensive contact with the entire coil 11 as much as possible.
[0029] Working principle: First, connect the two ends of the coil 11 to the corresponding external structures to allow the medium to flow inside the coil 11. Then, the water pump 6 transports the spray water from the water collection tank 5 to the spray pipe 8 through the connecting pipe 7. The water then sprays downwards through the nozzles 9 to the positions corresponding to the coil 11. When the spray water contacts the uppermost coil 11, it carries away heat. Simultaneously, the upper opening of the guide plate 19 extends outwards and downwards inwards, receiving more spray water from above. The spray water then flows downwards along the guide plate 19, flowing from the lower opening onto the lower coil 11. The lower coil 11 then contacts the spray pipe. The water also flows downwards. After the spray water fully contacts the coil 11, it flows back from the outlet 10 below the condenser 2 to the collection tank 5. Then, the fan 20 carries away the heat generated in the condenser 2 and the collection tank 5. After the spraying is completed, the electric screw slide 12 drives the support frame 13 to move. The support frame 13 moves along the limiting groove 17 via the slider 18. At the same time, it drives the outer ring 15 on one side of the support plate 14 and the friction plate 16 on the inner ring of the outer ring 15 to move along the outer ring of the coil 11. The friction plate 16 is in contact with the surface of the coil 11, and the friction generated removes the scale on the surface of the coil 11.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A low-temperature cascade evaporative condenser, comprising a condenser base (1), characterized in that: A condenser box (2) is fixedly installed on one side of the upper surface of the condenser bottom box (1). A spray chamber (3) is fixedly installed at the corresponding opening on the upper surface of the condenser box (2). A water collection tank (5) is fixedly placed on the lower inner surface of the condenser bottom box (1). A water outlet (10) is fixedly installed on the lower surface of the condenser box (2). A coil (11) is fixedly installed through the inner side of the condenser box (2). An electric lead screw slide (12) is fixedly installed on the upper surface of the spray chamber (3). The ball bearings of the electric lead screw slide (12) A support frame (13) is fixedly connected to both sides of the nut seat. A support plate (14) is fixedly installed at equal intervals on one side surface of the support frame (13). An outer ring (15) is fixedly installed at equal intervals on one side surface of the support plate (14). A friction plate (16) is fixedly attached to the inner ring of the outer ring (15). Limit grooves (17) are opened on both sides of the inner wall of the condenser (2). A slider (18) is fixedly connected to both sides of the outer wall of the support frame (13). A guide plate (19) is fixedly installed on the inner side surface of the condenser (2).
2. The low-temperature cascade evaporative condenser according to claim 1, characterized in that: A blower box (4) is fixedly installed on the upper surface of the condenser bottom box (1) and attached to one side of the condenser box (2). A fan (20) is fixedly installed on the upper surface of the blower box (4). The upper part of the water collection tank (5) is an open structure, and the upper surface of the condenser bottom box (1) and the lower surface of the blower box (4) are connected.
3. A low-temperature cascade evaporative condenser according to claim 1, characterized in that: The water collection tank (5) has a water outlet on its lower side surface, and the water outlet is connected to the water pump (6) flange through a pipe that penetrates the outer wall of the condenser bottom box (1). A connecting pipe (7) is connected to one side flange of the water pump (6), and a spray pipe (8) is fixedly connected to one end of the connecting pipe (7). A nozzle (9) is fixedly installed on the lower side surface of the spray pipe (8).
4. A low-temperature cascade evaporative condenser according to claim 3, characterized in that: The nozzles (9) are evenly distributed on one side of the spray pipe (8), and the nozzles (9) are directly above the coil (11). The spray pipe (8) is fixedly installed at one end of the spray chamber (3).
5. A low-temperature cascade evaporative condenser according to claim 1, characterized in that: The outlet (10) below the condenser box (2) penetrates the upper surface of the condenser bottom box (1), and the outlet (10) corresponds to the opening above the water collection box (5).
6. A low-temperature cascade evaporative condenser according to claim 1, characterized in that: The friction plate (16) is fitted onto the outer ring of the coil (11), and the friction plate (16) is made of rubber brush material that is resistant to high and low temperatures. The slider (18) is positioned corresponding to the limiting groove (17).
7. A low-temperature cascade evaporative condenser according to claim 1, characterized in that: The guide plate (19) has an arc-shaped structure and is distributed on both sides of the straight section of the coil (11).