A heat exchange device
Patent Information
- Application Number
- CN202522347025.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-05
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-05
AI Technical Summary
[0003]夏季环境温度升高（如35℃以上）时，冷却水自身温度可达到32℃以上，导致其与换热器内制冷剂的温差减小，冰机换热器的热交换效率明显下降
[0015]本申请实施例提供的换热设备的有益效果包括，例如：为了降低冷却水的温度，进而保障冰机换热器的正常运行，设计了一种换热设备，该换热设备包括冰机换热器和喷淋管道，冰机换热器内设置有用于供制冷剂流通的换热管，冰机换热器的内壁和换热管之间形成用于供冷却水流通的流道；喷淋管道用于与外部的工业水供应管连通，喷淋管道设置于冰机换热器的一侧，喷淋管道朝向冰机换热器的侧面开设有多个喷淋孔，多个喷淋孔沿喷淋管道的长度方向间隔设置。
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Figure CN224838615U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of heat exchange technology, and more specifically, to a heat exchange device. Background Technology
[0002] Ice machines (refrigeration units) are commonly used refrigeration equipment in chemical production, and their core component is the ice machine heat exchanger. The existing cooling method of ice machine heat exchangers is mainly a single cooling water circulation. The principle is: cooling water enters from the heat exchanger inlet, flows through the heat exchanger, absorbs the heat of the ice machine refrigerant, and is discharged from the outlet, completing the circulation and heat dissipation.
[0003] When the ambient temperature rises in summer (e.g., above 35℃), the temperature of the cooling water itself can reach above 32℃, which reduces the temperature difference between the cooling water and the refrigerant in the heat exchanger, significantly decreasing the heat exchange efficiency of the ice machine's heat exchanger. When the cooling water temperature is too high, the condensation saturation temperature and pressure increase, reducing the heat transfer on the surface of the ice machine's heat exchanger and making it easier to trigger high-pressure protection and shut down, thus increasing the load on the refrigeration system and causing unstable operation. Utility Model Content
[0004] The purpose of this application includes, for example, providing a heat exchange device that can reduce the temperature of cooling water, thereby ensuring the normal operation of the ice machine heat exchanger.
[0005] The embodiments of this application can be implemented as follows: An embodiment of this application provides a heat exchange device, which includes: An ice machine heat exchanger, wherein a heat exchange tube for refrigerant circulation is provided inside the ice machine heat exchanger, and a flow channel for cooling water circulation is formed between the inner wall of the ice machine heat exchanger and the heat exchange tube. A spray pipe is provided for connecting to an external industrial water supply pipe. The spray pipe is located on one side of the ice machine heat exchanger. Multiple spray holes are provided on the side of the spray pipe facing the ice machine heat exchanger, and the multiple spray holes are spaced apart along the length of the spray pipe.
[0006] Optionally, the spray pipe is located directly above the ice machine heat exchanger, and the distance between the spray pipe and the ice machine heat exchanger is 15~20cm.
[0007] Optionally, the angle between the axis of the spray hole and the vertical plane passing through the axis of the spray pipe is 30° to 60°.
[0008] Optionally, multiple spray holes are evenly spaced along the length of the spray pipe, with the distance between two adjacent spray holes being 10~15mm.
[0009] Optionally, the diameter of the spray hole is 2~3mm.
[0010] Optionally, the inner diameter of the spray pipe is 45~55mm.
[0011] Optionally, the heat exchange device further includes a water receiving tray, which is disposed on both sides of the ice machine heat exchanger opposite to the spray pipe.
[0012] Optionally, the depth of the water receiving tray is 10~15cm.
[0013] Optionally, the drip tray may be made of PVC or stainless steel.
[0014] Optionally, the bottom of the water receiving tray is provided with a drain outlet, which is used to connect with an external wastewater treatment system.
[0015] The beneficial effects of the heat exchange equipment provided in this application include, for example, in order to reduce the temperature of the cooling water and thus ensure the normal operation of the ice machine heat exchanger, a heat exchange equipment is designed. The heat exchange equipment includes an ice machine heat exchanger and a spray pipe. The ice machine heat exchanger is provided with a heat exchange tube for refrigerant circulation. A flow channel for cooling water circulation is formed between the inner wall of the ice machine heat exchanger and the heat exchange tube. The spray pipe is used to connect with an external industrial water supply pipe. The spray pipe is located on one side of the ice machine heat exchanger. Multiple spray holes are opened on the side of the spray pipe facing the ice machine heat exchanger. The multiple spray holes are spaced apart along the length of the spray pipe.
[0016] By installing a spray pipe connected to an external industrial water supply pipe on one side of the ice machine heat exchanger, and setting spray holes spaced along its length on the spray pipe, the spray water can cover the outer surface of the ice machine heat exchanger, effectively compensating for the problem of reduced heat exchange efficiency caused by the rise in cooling water temperature under high temperature conditions, thereby ensuring that the ice machine heat exchanger can operate stably under high temperature conditions. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the heat exchange device in the embodiments of this application.
[0019] Icons: 100-Ice machine heat exchanger; 110-Water inlet; 120-Water outlet; 130-Angle iron bracket; 200-Spray pipe; 210-Spray hole; 300-Water tray; 310-Drain outlet. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0021] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0023] In the description of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0024] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0025] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.
[0026] Existing ice machine heat exchangers typically rely on an internal cooling water circulation system for heat exchange. Cooling water flows into the heat exchanger through the inlet, passes through the shell side, absorbs heat from the refrigerant, and then exits through the outlet. However, under high-temperature conditions, such as when the outside temperature rises above 35°C in summer, the temperature of the cooling water itself also increases, often reaching above 32°C. At this point, the temperature difference between the cooling water and the refrigerant inside the heat exchange tubes decreases significantly, from 15-20°C in winter to 5-10°C, leading to a significant drop in the heat exchange efficiency of the ice machine heat exchanger. This reduced heat exchange efficiency further causes an increase in condensation saturation temperature and pressure, weakening the heat transfer capacity of the ice machine heat exchanger and easily triggering the high-pressure protection mechanism, causing the ice machine to shut down and affecting the stability and operating efficiency of the refrigeration system.
[0027] Please refer to Figure 1 An embodiment of this application provides a heat exchange device, including an ice machine heat exchanger 100 and a spray pipe 200. The ice machine heat exchanger 100 is provided with heat exchange tubes for refrigerant circulation, and a flow channel for cooling water circulation is formed between the inner wall of the ice machine heat exchanger 100 and the heat exchange tubes. The spray pipe 200 is used to communicate with an external industrial water supply pipe. The spray pipe 200 is located on one side of the ice machine heat exchanger 100, and a plurality of spray holes 210 are opened on the side of the spray pipe 200 facing the ice machine heat exchanger 100. The plurality of spray holes 210 are spaced apart along the length direction of the spray pipe 200.
[0028] The ice machine heat exchanger 100 has a cooling water inlet 110 and an outlet 120 at one end along its axial direction. A flow channel (shell side) for cooling water circulation is formed between the inner wall of the ice machine heat exchanger 100 and the heat exchange tubes. Both the inlet 110 and the outlet 120 are connected to this flow channel to maintain normal heat exchange requirements. In addition, a spray pipe 200 is provided on one side of the ice machine heat exchanger 100. The spray pipe 200 is made of stainless steel and is connected to an external industrial water supply pipe. The spray pipe 200 has multiple spray holes 210 on the side facing the ice machine heat exchanger 100, and the multiple spray holes 210 are spaced apart along the length of the spray pipe 200. This design allows industrial water to be supplied to the spray pipe 200 through an external industrial water supply pipe in high-temperature environments. The water is then sprayed onto the outer surface of the ice machine heat exchanger 100 through the spray holes 210. The heat of the cooling water is carried away by the evaporation and convection of the water, thereby improving the heat exchange efficiency of the ice machine heat exchanger 100.
[0029] By providing a spray pipe 200 connected to an external industrial water supply pipe on one side of the ice machine heat exchanger 100, and providing spray holes 210 spaced along its length on the spray pipe 200, the spray water can cover the outer surface of the ice machine heat exchanger 100, effectively compensating for the problem of reduced heat exchange efficiency caused by the rise in cooling water temperature under high temperature conditions, thereby ensuring that the ice machine heat exchanger 100 can operate stably under high temperature conditions.
[0030] In this embodiment, the spray pipe 200 is located directly above the ice machine heat exchanger 100, and the distance between the spray pipe 200 and the ice machine heat exchanger 100 is 15~20cm.
[0031] Since the outer surface of the ice machine heat exchanger 100 is the main area for receiving spray water, placing the spray pipe 200 directly above allows the spray water to cover most of the outer surface of the ice machine heat exchanger 100 from top to bottom, avoiding the situation where the spray water covers a small area on the outer surface of the ice machine heat exchanger 100.
[0032] The distance between the spray pipe 200 and the ice machine heat exchanger 100 is set to 15~20cm. If the spray pipe 200 is too close to the heat exchanger (e.g., less than 15cm), the sprayed water may not be able to spread fully after being sprayed out due to space constraints, resulting in uneven distribution of water droplets on the surface of the ice machine heat exchanger 100, which affects the cooling effect. Conversely, if the spray pipe 200 is too far from the heat exchanger (e.g., more than 20cm), the sprayed water may be affected by gravity and air resistance during its fall, which may cause some water droplets to fail to completely cover the surface of the ice machine heat exchanger 100, resulting in a decrease in cooling efficiency.
[0033] Therefore, setting the distance between the spray pipe 200 and the ice machine heat exchanger 100 to 15~20cm can ensure that the spray water has good spreadability and coverage after being sprayed out, and the water droplets can be distributed on the surface of the heat exchanger in a relatively uniform manner to form a continuous water film, thereby effectively enhancing the heat dissipation capacity of the ice machine heat exchanger 100.
[0034] In this embodiment, the angle between the axis of the spray hole 210 and the vertical plane passing through the axis of the spray pipe 200 is 30°~60°.
[0035] By limiting the angle between the axis of the spray hole 210 and the vertical plane passing through the axis of the spray pipe 200 to 30°~60°, the spray water does not fall vertically after being sprayed out, but impacts the surface of the ice machine heat exchanger 100 at a certain angle, thereby effectively avoiding the direct effect of water flow and reducing the probability of splashing caused by vertical impact.
[0036] If the angle between the axis of the spray hole 210 and the vertical plane is small, the spray direction of the water tends to be vertically direct, and significant splashing may still occur when the water reaches the surface of the ice machine heat exchanger 100. Conversely, if the angle between the axis of the spray hole 210 and the vertical plane is large, the spray direction of the water tends to be horizontal, making it difficult for the water to effectively cover the heat exchanger surface. Therefore, limiting the angle between the axis of the spray hole 210 and the vertical plane to 30°~60° ensures that the water effectively covers the heat exchanger surface while avoiding splashing caused by direct water flow, thus improving the utilization rate of the spray water and the heat exchange efficiency.
[0037] For example, the angle between the axis of the spray hole 210 and the vertical plane passing through the axis of the spray pipe 200 is 30°, 35°, 40°, 45°, 50°, 55° or 60°.
[0038] In this embodiment, multiple spray holes 210 are evenly spaced along the length of the spray pipe 200, and the distance between two adjacent spray holes 210 is 10~15mm.
[0039] The design of the spray holes 210 being evenly spaced along the length of the spray pipe 200 aims to achieve a uniform distribution of spray water on the heat exchanger surface, thereby improving the spray cooling effect. If the spray holes 210 are too densely distributed, i.e., the distance between adjacent spray holes 210 is less than 10mm, the spray water may form a local water flow concentration phenomenon after being sprayed out due to mutual interference between water flows, resulting in an excessively thick water film in some areas and insufficient water film coverage in other areas, affecting the overall cooling uniformity of the heat exchanger surface. Conversely, if the spray holes 210 are too sparsely distributed, i.e., the distance between adjacent spray holes 210 is greater than 15mm, the coverage density of the spray water is insufficient, which may form spray blind zones on the heat exchanger surface, reducing the continuity and coverage integrity of the water film, and thus weakening the cooling effect. Therefore, setting the distance between two adjacent spray holes 210 to 10~15mm can achieve a good balance between spray water flow rate, coverage density, and distribution uniformity.
[0040] In this embodiment, the diameter of the spray hole 210 is 2~3mm.
[0041] The spray holes 210 can be formed by drilling from the outside to the inside of the spray pipe 200. The size of the spray hole 210 directly affects the flow rate, distribution pattern, and contact effect of the spray water with the surface of the refrigeration heat exchanger 100. If the diameter of the spray hole 210 is too small, less than 2 mm, the flow rate of the spray water will be limited under limited industrial water pressure, making it difficult for the spray water to form a continuous and fully covering water film on the heat exchanger surface, thus affecting the cooling efficiency. At the same time, the smaller diameter also makes it more prone to clogging due to the deposition of impurities in the water. Conversely, if the diameter of the spray hole 210 is too large, exceeding 3 mm, the spray water will have a lower flow rate and a larger droplet diameter after being sprayed out. When in contact with the heat exchanger surface, it will be difficult to form a uniform water film, and some areas may experience water concentration or uneven coverage, thereby weakening the cooling effect. Therefore, setting the aperture of the spray hole 210 to 2~3mm can ensure that the water droplets are sprayed out at an appropriate flow rate while ensuring the spray water flow rate, thereby forming a continuous and uniformly distributed water film on the surface of the heat exchanger.
[0042] In this embodiment, the inner diameter of the spray pipe 200 is 45~55mm. For example, the inner diameter of the spray pipe 200 is 45mm, 50mm or 55mm. It can be understood that the inner diameter of the spray pipe 200 can be determined according to the actual working conditions.
[0043] In this embodiment, the heat exchange equipment also includes a water receiving tray 300, which is disposed on both sides of the ice machine heat exchanger 100 opposite to the spray pipe 200.
[0044] The water collection tray 300 and the spray pipe 200 are arranged opposite each other on both sides of the ice machine heat exchanger 100 to ensure that the spray water can be effectively collected by the water collection tray 300 after it is sprayed out and covers the surface of the heat exchanger. In addition, the water collection tray 300 also serves as an isolation function to prevent the spray water from spraying directly onto the ground or other equipment, thereby preventing water stains from accumulating and polluting the site environment.
[0045] Specifically, the water collection tray 300 is made of PVC or stainless steel. Its shape and size should match the outline of the ice machine heat exchanger 100. With the spray pipe 200 positioned directly above the ice machine heat exchanger 100, the water collection tray 300 is positioned directly below it. The projected area of the water collection tray 300 should be larger than the bottom outline of the ice machine heat exchanger 100 to ensure it can cover the area below the heat exchanger where spray water may drip. The water collection tray 300 is a deep tank structure, allowing it to receive spray water while also having a certain water storage capacity to prevent overflow due to large instantaneous water volume. Furthermore, the bottom of the water collection tray 300 is equipped with a drain outlet 310, which connects to an external wastewater treatment system to guide the collected spray water to an external wastewater treatment system (such as a wastewater treatment pond) for treatment.
[0046] In other embodiments, the drain outlet 310 can also be connected to an industrial water circulation tank to realize the recycling of water resources.
[0047] In this embodiment, the depth of the water receiving tray 300 is 10~15cm.
[0048] The depth of the drip tray 300 directly affects its capacity to hold spray water and its reliability in preventing water overflow. If the depth of the drip tray 300 is less than 10cm, its water storage capacity is relatively small, and overflow is likely to occur when the spray water flow is large or drainage is not timely, causing spray water to spill onto the surrounding area, affecting the ground environment and operational safety. Conversely, if the depth of the drip tray 300 exceeds 15cm, it will not only increase material consumption and manufacturing costs but also occupy more space. Therefore, setting the depth of the drip tray 300 to 10-15cm can effectively prevent spray water overflow while ensuring sufficient water storage capacity, and also taking into account drainage efficiency and structural compactness.
[0049] During the assembly of the heat exchange equipment, the spray pipe 200 is first fixed to the ice machine heat exchanger 100 by the angle iron bracket 130, so that the spray pipe 200 is located directly above the ice machine heat exchanger 100 and the axis of the spray pipe 200 is parallel to the axis of the ice machine heat exchanger 100; then, one end of the spray pipe 200 is connected to the industrial water supply pipe through a ball valve, and the other end of the spray pipe 200 is closed; finally, a water receiving tray 300 is placed directly below the ice machine heat exchanger 100, and the bottom drain outlet 310 of the water receiving tray 300 is connected to the external wastewater treatment system.
[0050] The spray pipe 200 in this heat exchange equipment only operates in summer to avoid unnecessary water consumption. During summer operation, water is supplied to the spray pipe 200 through the industrial water supply pipe. The water is evenly sprayed onto the surface of the ice machine heat exchanger 100 through each spray hole 210 and collected by the water receiving tray 300 before being discharged into the external wastewater treatment system. This heat exchange equipment achieves synergistic heat dissipation by operating the spray water and cooling water synchronously, thereby improving the heat exchange efficiency of the heat exchange equipment.
[0051] In summary, the embodiments of this application provide a heat exchange device, which includes an ice machine heat exchanger 100 and a spray pipe 200. By providing a spray pipe 200 connected to an external industrial water supply pipe on one side of the ice machine heat exchanger 100, and providing spray holes 210 spaced along its length on the spray pipe 200, the spray water can cover the outer surface of the ice machine heat exchanger 100, effectively compensating for the problem of decreased heat exchange efficiency caused by the rise in cooling water temperature under high temperature conditions, thereby ensuring that the ice machine heat exchanger 100 can operate stably under high temperature conditions.
[0052] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A heat exchange device, characterized in that, include: An ice machine heat exchanger, wherein a heat exchange tube for refrigerant circulation is provided inside the ice machine heat exchanger, and a flow channel for cooling water circulation is formed between the inner wall of the ice machine heat exchanger and the heat exchange tube. A spray pipe is provided for connecting to an external industrial water supply pipe. The spray pipe is located on one side of the ice machine heat exchanger. Multiple spray holes are provided on the side of the spray pipe facing the ice machine heat exchanger, and the multiple spray holes are spaced apart along the length of the spray pipe.
2. The heat exchange device according to claim 1, characterized in that, The spray pipe is located directly above the ice machine heat exchanger, and the distance between the spray pipe and the ice machine heat exchanger is 15~20cm.
3. The heat exchange device according to claim 2, characterized in that, The angle between the axis of the spray hole and the vertical plane passing through the axis of the spray pipe is 30°~60°.
4. The heat exchange device according to claim 1, characterized in that, Multiple spray holes are evenly spaced along the length of the spray pipe, and the distance between two adjacent spray holes is 10~15mm.
5. The heat exchange device according to claim 1, characterized in that, The diameter of the spray nozzle is 2~3mm.
6. The heat exchange device according to claim 1, characterized in that, The inner diameter of the spray pipe is 45~55mm.
7. The heat exchange device according to claim 1, characterized in that, The heat exchange equipment also includes a water receiving tray, which is disposed on both sides of the ice machine heat exchanger opposite to the spray pipe.
8. The heat exchange device according to claim 7, characterized in that, The depth of the water receiving tray is 10-15cm.
9. The heat exchange device according to claim 7, characterized in that, The drip tray is made of PVC or stainless steel.
10. The heat exchange device according to claim 7, characterized in that, The bottom of the water receiving tray is provided with a drain outlet, which is used to connect with an external wastewater treatment system.